From c9bd09bd5d9549afa2e173c9027ef7da021ceb9c Mon Sep 17 00:00:00 2001
From: iscai-msft <isabellavcai@gmail.com>
Date: Tue, 3 Dec 2024 11:43:00 -0500
Subject: [PATCH 1/5] remove useless object declaration

---
 packages/autorest.python/scripts/eng/pylintrc | 2 +-
 packages/typespec-python/scripts/eng/pylintrc | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/autorest.python/scripts/eng/pylintrc b/packages/autorest.python/scripts/eng/pylintrc
index 905494ac258..802317e3fb9 100644
--- a/packages/autorest.python/scripts/eng/pylintrc
+++ b/packages/autorest.python/scripts/eng/pylintrc
@@ -17,7 +17,7 @@ enable=useless-suppression
 # too-many-arguments: Due to the nature of the CLI many commands have large arguments set which reflect in large arguments set in corresponding methods.
 # too-many-lines: Due to code generation many files end up with too many lines.
 # Let's black deal with bad-continuation
-disable=useless-object-inheritance,missing-docstring,locally-disabled,fixme,cyclic-import,too-many-arguments,invalid-name,duplicate-code,too-few-public-methods,consider-using-f-string,super-with-arguments,redefined-builtin,import-outside-toplevel,client-suffix-needed,unnecessary-dunder-call,unnecessary-ellipsis,disallowed-name,consider-using-max-builtin,unknown-option-value
+disable=missing-docstring,locally-disabled,fixme,cyclic-import,too-many-arguments,invalid-name,duplicate-code,too-few-public-methods,consider-using-f-string,super-with-arguments,redefined-builtin,import-outside-toplevel,client-suffix-needed,unnecessary-dunder-call,unnecessary-ellipsis,disallowed-name,consider-using-max-builtin,unknown-option-value
 
 [FORMAT]
 max-line-length=120
diff --git a/packages/typespec-python/scripts/eng/pylintrc b/packages/typespec-python/scripts/eng/pylintrc
index 905494ac258..802317e3fb9 100644
--- a/packages/typespec-python/scripts/eng/pylintrc
+++ b/packages/typespec-python/scripts/eng/pylintrc
@@ -17,7 +17,7 @@ enable=useless-suppression
 # too-many-arguments: Due to the nature of the CLI many commands have large arguments set which reflect in large arguments set in corresponding methods.
 # too-many-lines: Due to code generation many files end up with too many lines.
 # Let's black deal with bad-continuation
-disable=useless-object-inheritance,missing-docstring,locally-disabled,fixme,cyclic-import,too-many-arguments,invalid-name,duplicate-code,too-few-public-methods,consider-using-f-string,super-with-arguments,redefined-builtin,import-outside-toplevel,client-suffix-needed,unnecessary-dunder-call,unnecessary-ellipsis,disallowed-name,consider-using-max-builtin,unknown-option-value
+disable=missing-docstring,locally-disabled,fixme,cyclic-import,too-many-arguments,invalid-name,duplicate-code,too-few-public-methods,consider-using-f-string,super-with-arguments,redefined-builtin,import-outside-toplevel,client-suffix-needed,unnecessary-dunder-call,unnecessary-ellipsis,disallowed-name,consider-using-max-builtin,unknown-option-value
 
 [FORMAT]
 max-line-length=120

From 72757ff83c811f6c348186b939a9443ff0b2ddf8 Mon Sep 17 00:00:00 2001
From: iscai-msft <isabellavcai@gmail.com>
Date: Tue, 3 Dec 2024 11:44:17 -0500
Subject: [PATCH 2/5] regenerate

---
 .../key/credential/sample/_serialization.py   |  6 +-
 .../azure/basic/sample/_serialization.py      |  6 +-
 .../azure/directives/sample/_serialization.py |  6 +-
 .../azure/mgmt/sample/_serialization.py       |  6 +-
 .../azure/multiapi/sample/__init__.py         |  4 +-
 .../azure/multiapi/sample/_configuration.py   | 38 ++++----
 .../sample/_multiapi_service_client.py        | 90 ++++++++-----------
 .../multiapi/sample/_operations_mixin.py      | 44 +++++----
 .../azure/multiapi/sample/_serialization.py   |  6 +-
 .../azure/multiapi/sample/aio/__init__.py     |  3 +-
 .../multiapi/sample/aio/_configuration.py     | 38 ++++----
 .../sample/aio/_multiapi_service_client.py    | 86 +++++++-----------
 .../multiapi/sample/aio/_operations_mixin.py  | 46 ++++++----
 .../bodyduration/_serialization.py            |  6 +-
 .../AzureReport/azurereport/_serialization.py |  6 +-
 .../custompollerpager/_serialization.py       |  6 +-
 .../custombaseurlpaging/_serialization.py     |  6 +-
 .../Head/head/_serialization.py               |  6 +-
 .../headexceptions/_serialization.py          |  6 +-
 .../_serialization.py                         |  6 +-
 .../AcceptanceTests/Lro/lro/_serialization.py |  6 +-
 .../_serialization.py                         |  6 +-
 .../mixedapiversion/_serialization.py         |  6 +-
 .../packagemode/batch/head/_serialization.py  |  6 +-
 .../batch/paging/_serialization.py            |  6 +-
 .../packagemode/customize/_serialization.py   |  6 +-
 .../packagemode/dataplane/_serialization.py   |  6 +-
 .../azure/package/mode/_serialization.py      |  6 +-
 .../Paging/paging/_serialization.py           |  6 +-
 .../securityaadswagger/_serialization.py      |  6 +-
 .../securitykeyswagger/_serialization.py      |  6 +-
 .../storage/_serialization.py                 |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../headversiontolerant/_serialization.py     |  6 +-
 .../_serialization.py                         |  6 +-
 .../lroversiontolerant/_serialization.py      |  6 +-
 .../_serialization.py                         |  6 +-
 .../pagingversiontolerant/_serialization.py   |  6 +-
 .../storageversiontolerant/_serialization.py  |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../Multiapi/multiapi/_serialization.py       |  6 +-
 .../_serialization.py                         |  6 +-
 .../multiapicustombaseurl/_serialization.py   |  6 +-
 .../multiapidataplane/_serialization.py       |  6 +-
 .../multiapikeywordonly/_serialization.py     |  6 +-
 .../multiapinoasync/_serialization.py         |  6 +-
 .../multiapisecurity/_serialization.py        |  6 +-
 .../submodule/_serialization.py               |  6 +-
 .../multiapicombiner/_serialization.py        |  6 +-
 .../unittests/storage_models/serialization.py |  6 +-
 .../additionalproperties/_serialization.py    |  6 +-
 .../Anything/anything/_serialization.py       |  6 +-
 .../BodyArray/bodyarray/_serialization.py     |  6 +-
 .../vanilla/body/array/_serialization.py      |  6 +-
 .../BodyBinary/bodybinary/_serialization.py   |  6 +-
 .../BodyBoolean/bodyboolean/_serialization.py |  6 +-
 .../BodyByte/bodybyte/_serialization.py       |  6 +-
 .../bodybytewithpackagename/_serialization.py |  6 +-
 .../BodyDate/bodydate/_serialization.py       |  6 +-
 .../bodydatetime/_serialization.py            |  6 +-
 .../bodydatetimerfc1123/_serialization.py     |  6 +-
 .../bodydictionary/_serialization.py          |  6 +-
 .../bodyduration/_serialization.py            |  6 +-
 .../BodyFile/bodyfile/_serialization.py       |  6 +-
 .../bodyformdata/_serialization.py            |  6 +-
 .../bodyformurlencodeddata/_serialization.py  |  6 +-
 .../BodyInteger/bodyinteger/_serialization.py |  6 +-
 .../BodyNumber/bodynumber/_serialization.py   |  6 +-
 .../BodyString/bodystring/_serialization.py   |  6 +-
 .../BodyTime/bodytime/_serialization.py       |  6 +-
 .../ClientEnum/clientenum/_serialization.py   |  6 +-
 .../Constants/constants/_serialization.py     |  6 +-
 .../_serialization.py                         |  6 +-
 .../errorwithsecrets/_serialization.py        |  6 +-
 .../extensibleenumsswagger/_serialization.py  |  6 +-
 .../Header/header/_serialization.py           |  6 +-
 .../Http/httpinfrastructure/_serialization.py |  6 +-
 .../incorrecterrorresponse/_serialization.py  |  6 +-
 .../internaloperation/_serialization.py       |  6 +-
 .../MediaTypes/mediatypes/_serialization.py   |  6 +-
 .../mergepatchjson/_serialization.py          |  6 +-
 .../modelflattening/_serialization.py         |  6 +-
 .../multipleinheritance/_serialization.py     |  6 +-
 .../nooperations/_serialization.py            |  6 +-
 .../nonstringenums/_serialization.py          |  6 +-
 .../ObjectType/objecttype/_serialization.py   |  6 +-
 .../packagemode/_serialization.py             |  6 +-
 .../parameterflattening/_serialization.py     |  6 +-
 .../parameterizedendpoint/_serialization.py   |  6 +-
 .../Report/report/_serialization.py           |  6 +-
 .../reservedwords/_serialization.py           |  6 +-
 .../securityaadswagger/_serialization.py      |  6 +-
 .../_serialization.py                         |  6 +-
 .../securitykeyswagger/_serialization.py      |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../Xml/xmlservice/_serialization.py          |  6 +-
 .../xmserrorresponse/_serialization.py        |  6 +-
 .../_serialization.py                         |  6 +-
 .../anythingversiontolerant/_serialization.py |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../bodybyteversiontolerant/_serialization.py |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../bodydateversiontolerant/_serialization.py |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../bodyfileversiontolerant/_serialization.py |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../bodytimeversiontolerant/_serialization.py |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../headerversiontolerant/_serialization.py   |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../anything_client/_serialization.py         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../reportversiontolerant/_serialization.py   |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../urlversiontolerant/_serialization.py      |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../_serialization.py                         |  6 +-
 .../authentication/apikey/_serialization.py   |  6 +-
 .../http/custom/_serialization.py             |  6 +-
 .../authentication/oauth2/_serialization.py   |  6 +-
 .../authentication/union/_serialization.py    |  6 +-
 .../core/access/_serialization.py             |  6 +-
 .../core/flattenproperty/_serialization.py    |  6 +-
 .../core/usage/_serialization.py              |  6 +-
 .../specs/azure/core/basic/_serialization.py  |  6 +-
 .../azure/core/lro/standard/_serialization.py |  6 +-
 .../specs/azure/core/model/_serialization.py  |  6 +-
 .../specs/azure/core/page/_serialization.py   |  6 +-
 .../specs/azure/core/scalar/_serialization.py |  6 +-
 .../specs/azure/core/traits/_serialization.py |  6 +-
 .../azure/example/basic/_serialization.py     |  6 +-
 .../commonproperties/_serialization.py        |  6 +-
 .../resources/_serialization.py               |  6 +-
 .../xmsclientrequestid/_serialization.py      |  6 +-
 .../azurecore/lro/rpc/_serialization.py       |  6 +-
 .../client/naming/_serialization.py           |  6 +-
 .../structure/service/_serialization.py       |  6 +-
 .../structure/multiclient/_serialization.py   |  6 +-
 .../renamedoperation/_serialization.py        |  6 +-
 .../twooperationgroup/_serialization.py       |  6 +-
 .../encode/bytes/_serialization.py            |  6 +-
 .../encode/datetime/_serialization.py         |  6 +-
 .../encode/duration/_serialization.py         |  6 +-
 .../encode/numeric/_serialization.py          |  6 +-
 .../headasbooleanfalse/_serialization.py      |  6 +-
 .../headasbooleantrue/_serialization.py       |  6 +-
 .../parameters/basic/_serialization.py        |  6 +-
 .../bodyoptionality/_serialization.py         |  6 +-
 .../collectionformat/_serialization.py        |  6 +-
 .../parameters/spread/_serialization.py       |  6 +-
 .../contentnegotiation/_serialization.py      |  6 +-
 .../payload/jsonmergepatch/_serialization.py  |  6 +-
 .../payload/mediatype/_serialization.py       |  6 +-
 .../payload/multipart/_serialization.py       |  6 +-
 .../payload/pageable/_serialization.py        |  6 +-
 .../payload-xml/payload/xml/_serialization.py |  6 +-
 .../resiliency/srv/driven1/_serialization.py  |  6 +-
 .../resiliency/srv/driven2/_serialization.py  |  6 +-
 .../generated/routes/routes/_serialization.py |  6 +-
 .../encodedname/json/_serialization.py        |  6 +-
 .../endpoint/notdefined/_serialization.py     |  6 +-
 .../server/path/multiple/_serialization.py    |  6 +-
 .../server/path/single/_serialization.py      |  6 +-
 .../versions/notversioned/_serialization.py   |  6 +-
 .../versions/versioned/_serialization.py      |  6 +-
 .../conditionalrequest/_serialization.py      |  6 +-
 .../repeatability/_serialization.py           |  6 +-
 .../specialwords/_serialization.py            |  6 +-
 .../typetest/array/_serialization.py          |  6 +-
 .../typetest/dictionary/_serialization.py     |  6 +-
 .../enum/extensible/_serialization.py         |  6 +-
 .../typetest/enum/fixed/_serialization.py     |  6 +-
 .../typetest/model/empty/_serialization.py    |  6 +-
 .../model/enumdiscriminator/_serialization.py |  6 +-
 .../nesteddiscriminator/_serialization.py     |  6 +-
 .../model/notdiscriminated/_serialization.py  |  6 +-
 .../model/recursive/_serialization.py         |  6 +-
 .../singlediscriminator/_serialization.py     |  6 +-
 .../typetest/model/usage/_serialization.py    |  6 +-
 .../model/visibility/_serialization.py        |  6 +-
 .../additionalproperties/_serialization.py    |  6 +-
 .../property/nullable/_serialization.py       |  6 +-
 .../property/optional/_serialization.py       |  6 +-
 .../property/valuetypes/_serialization.py     |  6 +-
 .../typetest/scalar/_serialization.py         |  6 +-
 .../typetest/union/_serialization.py          |  6 +-
 .../versioning/added/_serialization.py        |  6 +-
 .../versioning/madeoptional/_serialization.py |  6 +-
 .../versioning/removed/_serialization.py      |  6 +-
 .../versioning/renamedfrom/_serialization.py  |  6 +-
 .../returntypechangedfrom/_serialization.py   |  6 +-
 .../typechangedfrom/_serialization.py         |  6 +-
 .../authentication/apikey/_serialization.py   |  6 +-
 .../http/custom/_serialization.py             |  6 +-
 .../authentication/oauth2/_serialization.py   |  6 +-
 .../authentication/union/_serialization.py    |  6 +-
 .../client/naming/_serialization.py           |  6 +-
 .../structure/service/_serialization.py       |  6 +-
 .../structure/multiclient/_serialization.py   |  6 +-
 .../renamedoperation/_serialization.py        |  6 +-
 .../twooperationgroup/_serialization.py       |  6 +-
 .../encode/bytes/_serialization.py            |  6 +-
 .../encode/datetime/_serialization.py         |  6 +-
 .../encode/duration/_serialization.py         |  6 +-
 .../encode/numeric/_serialization.py          |  6 +-
 .../headasbooleanfalse/_serialization.py      |  6 +-
 .../headasbooleantrue/_serialization.py       |  6 +-
 .../parameters/basic/_serialization.py        |  6 +-
 .../bodyoptionality/_serialization.py         |  6 +-
 .../collectionformat/_serialization.py        |  6 +-
 .../parameters/spread/_serialization.py       |  6 +-
 .../contentnegotiation/_serialization.py      |  6 +-
 .../payload/jsonmergepatch/_serialization.py  |  6 +-
 .../payload/mediatype/_serialization.py       |  6 +-
 .../payload/multipart/_serialization.py       |  6 +-
 .../payload/pageable/_serialization.py        |  6 +-
 .../payload-xml/payload/xml/_serialization.py |  6 +-
 .../resiliency/srv/driven1/_serialization.py  |  6 +-
 .../resiliency/srv/driven2/_serialization.py  |  6 +-
 .../generated/routes/routes/_serialization.py |  6 +-
 .../encodedname/json/_serialization.py        |  6 +-
 .../endpoint/notdefined/_serialization.py     |  6 +-
 .../server/path/multiple/_serialization.py    |  6 +-
 .../server/path/single/_serialization.py      |  6 +-
 .../versions/notversioned/_serialization.py   |  6 +-
 .../versions/versioned/_serialization.py      |  6 +-
 .../conditionalrequest/_serialization.py      |  6 +-
 .../repeatability/_serialization.py           |  6 +-
 .../specialwords/_serialization.py            |  6 +-
 .../typetest/array/_serialization.py          |  6 +-
 .../typetest/dictionary/_serialization.py     |  6 +-
 .../enum/extensible/_serialization.py         |  6 +-
 .../typetest/enum/fixed/_serialization.py     |  6 +-
 .../typetest/model/empty/_serialization.py    |  6 +-
 .../model/enumdiscriminator/_serialization.py |  6 +-
 .../nesteddiscriminator/_serialization.py     |  6 +-
 .../model/notdiscriminated/_serialization.py  |  6 +-
 .../model/recursive/_serialization.py         |  6 +-
 .../singlediscriminator/_serialization.py     |  6 +-
 .../typetest/model/usage/_serialization.py    |  6 +-
 .../model/visibility/_serialization.py        |  6 +-
 .../additionalproperties/_serialization.py    |  6 +-
 .../property/nullable/_serialization.py       |  6 +-
 .../property/optional/_serialization.py       |  6 +-
 .../property/valuetypes/_serialization.py     |  6 +-
 .../typetest/scalar/_serialization.py         |  6 +-
 .../typetest/union/_serialization.py          |  6 +-
 .../versioning/added/_serialization.py        |  6 +-
 .../versioning/madeoptional/_serialization.py |  6 +-
 .../versioning/removed/_serialization.py      |  6 +-
 .../versioning/renamedfrom/_serialization.py  |  6 +-
 .../returntypechangedfrom/_serialization.py   |  6 +-
 .../typechangedfrom/_serialization.py         |  6 +-
 295 files changed, 1027 insertions(+), 1044 deletions(-)

diff --git a/packages/autorest.python/samples/specification/azure_key_credential/generated/azure/key/credential/sample/_serialization.py b/packages/autorest.python/samples/specification/azure_key_credential/generated/azure/key/credential/sample/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/samples/specification/azure_key_credential/generated/azure/key/credential/sample/_serialization.py
+++ b/packages/autorest.python/samples/specification/azure_key_credential/generated/azure/key/credential/sample/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/samples/specification/basic/generated/azure/basic/sample/_serialization.py b/packages/autorest.python/samples/specification/basic/generated/azure/basic/sample/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/samples/specification/basic/generated/azure/basic/sample/_serialization.py
+++ b/packages/autorest.python/samples/specification/basic/generated/azure/basic/sample/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/samples/specification/directives/generated/azure/directives/sample/_serialization.py b/packages/autorest.python/samples/specification/directives/generated/azure/directives/sample/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/samples/specification/directives/generated/azure/directives/sample/_serialization.py
+++ b/packages/autorest.python/samples/specification/directives/generated/azure/directives/sample/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/samples/specification/management/generated/azure/mgmt/sample/_serialization.py b/packages/autorest.python/samples/specification/management/generated/azure/mgmt/sample/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/samples/specification/management/generated/azure/mgmt/sample/_serialization.py
+++ b/packages/autorest.python/samples/specification/management/generated/azure/mgmt/sample/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py
index 09a500e6f5c..b54d40dbd2f 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py
@@ -7,12 +7,10 @@
 # --------------------------------------------------------------------------
 
 from ._multiapi_service_client import MultiapiServiceClient
-
-__all__ = ["MultiapiServiceClient"]
+__all__ = ['MultiapiServiceClient']
 
 try:
     from ._patch import patch_sdk  # type: ignore
-
     patch_sdk()
 except ImportError:
     pass
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py
index 88bc35f69e9..01c1c4907c2 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py
@@ -19,7 +19,6 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials import TokenCredential
 
-
 class MultiapiServiceClientConfiguration:
     """Configuration for MultiapiServiceClient.
 
@@ -30,27 +29,32 @@ class MultiapiServiceClientConfiguration:
     :type credential: ~azure.core.credentials.TokenCredential
     """
 
-    def __init__(self, credential: "TokenCredential", **kwargs: Any):
+    def __init__(
+        self,
+        credential: "TokenCredential",
+        **kwargs: Any
+    ):
         if credential is None:
             raise ValueError("Parameter 'credential' must not be None.")
 
         self.credential = credential
-        self.credential_scopes = kwargs.pop("credential_scopes", ["https://management.azure.com/.default"])
-        kwargs.setdefault("sdk_moniker", "azure-multiapi-sample/{}".format(VERSION))
+        self.credential_scopes = kwargs.pop('credential_scopes', ['https://management.azure.com/.default'])
+        kwargs.setdefault('sdk_moniker', 'azure-multiapi-sample/{}'.format(VERSION))
         self.polling_interval = kwargs.get("polling_interval", 30)
         self._configure(**kwargs)
 
-    def _configure(self, **kwargs: Any):
-        self.user_agent_policy = kwargs.get("user_agent_policy") or policies.UserAgentPolicy(**kwargs)
-        self.headers_policy = kwargs.get("headers_policy") or policies.HeadersPolicy(**kwargs)
-        self.proxy_policy = kwargs.get("proxy_policy") or policies.ProxyPolicy(**kwargs)
-        self.logging_policy = kwargs.get("logging_policy") or policies.NetworkTraceLoggingPolicy(**kwargs)
-        self.http_logging_policy = kwargs.get("http_logging_policy") or ARMHttpLoggingPolicy(**kwargs)
-        self.retry_policy = kwargs.get("retry_policy") or policies.RetryPolicy(**kwargs)
-        self.custom_hook_policy = kwargs.get("custom_hook_policy") or policies.CustomHookPolicy(**kwargs)
-        self.redirect_policy = kwargs.get("redirect_policy") or policies.RedirectPolicy(**kwargs)
-        self.authentication_policy = kwargs.get("authentication_policy")
+    def _configure(
+        self,
+        **kwargs: Any
+    ):
+        self.user_agent_policy = kwargs.get('user_agent_policy') or policies.UserAgentPolicy(**kwargs)
+        self.headers_policy = kwargs.get('headers_policy') or policies.HeadersPolicy(**kwargs)
+        self.proxy_policy = kwargs.get('proxy_policy') or policies.ProxyPolicy(**kwargs)
+        self.logging_policy = kwargs.get('logging_policy') or policies.NetworkTraceLoggingPolicy(**kwargs)
+        self.http_logging_policy = kwargs.get('http_logging_policy') or ARMHttpLoggingPolicy(**kwargs)
+        self.retry_policy = kwargs.get('retry_policy') or policies.RetryPolicy(**kwargs)
+        self.custom_hook_policy = kwargs.get('custom_hook_policy') or policies.CustomHookPolicy(**kwargs)
+        self.redirect_policy = kwargs.get('redirect_policy') or policies.RedirectPolicy(**kwargs)
+        self.authentication_policy = kwargs.get('authentication_policy')
         if self.credential and not self.authentication_policy:
-            self.authentication_policy = ARMChallengeAuthenticationPolicy(
-                self.credential, *self.credential_scopes, **kwargs
-            )
+            self.authentication_policy = ARMChallengeAuthenticationPolicy(self.credential, *self.credential_scopes, **kwargs)
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py
index fdfa2e313cf..4481c472404 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py
@@ -26,7 +26,6 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials import TokenCredential
 
-
 class _SDKClient(object):
     def __init__(self, *args, **kwargs):
         """This is a fake class to support current implemetation of MultiApiClientMixin."
@@ -34,7 +33,6 @@ def __init__(self, *args, **kwargs):
         """
         pass
 
-
 class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClientMixin, _SDKClient):
     """Service client for multiapi client testing.
 
@@ -57,30 +55,28 @@ class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClient
     :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
     """
 
-    DEFAULT_API_VERSION = "3.0.0"
+    DEFAULT_API_VERSION = '3.0.0'
     _PROFILE_TAG = "azure.multiapi.sample.MultiapiServiceClient"
-    LATEST_PROFILE = ProfileDefinition(
-        {
-            _PROFILE_TAG: {
-                None: DEFAULT_API_VERSION,
-                "begin_test_lro": "1.0.0",
-                "begin_test_lro_and_paging": "1.0.0",
-                "test_one": "2.0.0",
-            }
-        },
-        _PROFILE_TAG + " latest",
+    LATEST_PROFILE = ProfileDefinition({
+        _PROFILE_TAG: {
+            None: DEFAULT_API_VERSION,
+            'begin_test_lro': '1.0.0',
+            'begin_test_lro_and_paging': '1.0.0',
+            'test_one': '2.0.0',
+        }},
+        _PROFILE_TAG + " latest"
     )
 
     def __init__(
         self,
         credential: "TokenCredential",
-        api_version: Optional[str] = None,
+        api_version: Optional[str]=None,
         base_url: str = "http://localhost:3000",
-        profile: KnownProfiles = KnownProfiles.default,
+        profile: KnownProfiles=KnownProfiles.default,
         **kwargs: Any
     ):
         if api_version:
-            kwargs.setdefault("api_version", api_version)
+            kwargs.setdefault('api_version', api_version)
         self._config = MultiapiServiceClientConfiguration(credential, **kwargs)
         _policies = kwargs.pop("policies", None)
         if _policies is None:
@@ -101,7 +97,10 @@ def __init__(
                 self._config.http_logging_policy,
             ]
         self._client = ARMPipelineClient(base_url=base_url, policies=_policies, **kwargs)
-        super(MultiapiServiceClient, self).__init__(api_version=api_version, profile=profile)
+        super(MultiapiServiceClient, self).__init__(
+            api_version=api_version,
+            profile=profile
+        )
 
     @classmethod
     def _models_dict(cls, api_version):
@@ -111,21 +110,18 @@ def _models_dict(cls, api_version):
     def models(cls, api_version=DEFAULT_API_VERSION):
         """Module depends on the API version:
 
-        * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
-        * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
-        * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
+           * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
+           * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
+           * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
         """
-        if api_version == "1.0.0":
+        if api_version == '1.0.0':
             from .v1 import models
-
             return models
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from .v2 import models
-
             return models
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from .v3 import models
-
             return models
         raise ValueError("API version {} is not available".format(api_version))
 
@@ -133,57 +129,43 @@ def models(cls, api_version=DEFAULT_API_VERSION):
     def operation_group_one(self):
         """Instance depends on the API version:
 
-        * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.operations.OperationGroupOneOperations>`
-        * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.operations.OperationGroupOneOperations>`
-        * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.operations.OperationGroupOneOperations>`
+           * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.operations.OperationGroupOneOperations>`
+           * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.operations.OperationGroupOneOperations>`
+           * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.operations.OperationGroupOneOperations>`
         """
-        api_version = self._get_api_version("operation_group_one")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('operation_group_one')
+        if api_version == '1.0.0':
             from .v1.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from .v2.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from .v3.operations import OperationGroupOneOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_one'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(
-            self._client,
-            self._config,
-            Serializer(self._models_dict(api_version)),
-            Deserializer(self._models_dict(api_version)),
-            api_version,
-        )
+        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
 
     @property
     def operation_group_two(self):
         """Instance depends on the API version:
 
-        * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.operations.OperationGroupTwoOperations>`
-        * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.operations.OperationGroupTwoOperations>`
+           * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.operations.OperationGroupTwoOperations>`
+           * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.operations.OperationGroupTwoOperations>`
         """
-        api_version = self._get_api_version("operation_group_two")
-        if api_version == "2.0.0":
+        api_version = self._get_api_version('operation_group_two')
+        if api_version == '2.0.0':
             from .v2.operations import OperationGroupTwoOperations as OperationClass
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from .v3.operations import OperationGroupTwoOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_two'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(
-            self._client,
-            self._config,
-            Serializer(self._models_dict(api_version)),
-            Deserializer(self._models_dict(api_version)),
-            api_version,
-        )
+        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
 
     def close(self):
         self._client.close()
-
     def __enter__(self):
         self._client.__enter__()
         return self
-
     def __exit__(self, *exc_details):
         self._client.__exit__(*exc_details)
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py
index 5af54a9ee1d..d55b41d3a3b 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py
@@ -21,7 +21,9 @@
 class MultiapiServiceClientOperationsMixin(object):
 
     def begin_test_lro(
-        self, product: Optional[Union[_models.Product, IO[bytes]]] = None, **kwargs: Any
+        self,
+        product: Optional[Union[_models.Product, IO[bytes]]] = None,
+        **kwargs: Any
     ) -> LROPoller[_models.Product]:
         """Put in whatever shape of Product you want, will return a Product with id equal to 100.
 
@@ -32,8 +34,8 @@ def begin_test_lro(
         :rtype: ~azure.core.polling.LROPoller[~azure.multiapi.sample.v1.models.Product]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("begin_test_lro")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('begin_test_lro')
+        if api_version == '1.0.0':
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro'".format(api_version))
@@ -64,8 +66,8 @@ def begin_test_lro_and_paging(
          ~azure.core.polling.LROPoller[~azure.core.paging.ItemPaged[~azure.multiapi.sample.v1.models.Product]]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("begin_test_lro_and_paging")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('begin_test_lro_and_paging')
+        if api_version == '1.0.0':
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro_and_paging'".format(api_version))
@@ -97,12 +99,12 @@ def test_different_calls(  # pylint: disable=inconsistent-return-statements
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("test_different_calls")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('test_different_calls')
+        if api_version == '1.0.0':
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from .v2.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from .v3.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_different_calls'".format(api_version))
@@ -113,12 +115,13 @@ def test_different_calls(  # pylint: disable=inconsistent-return-statements
         mixin_instance._serialize = Serializer(self._models_dict(api_version))
         mixin_instance._serialize.client_side_validation = False
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
-        return mixin_instance.test_different_calls(
-            greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs
-        )
+        return mixin_instance.test_different_calls(greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs)
 
     def test_one(  # pylint: disable=inconsistent-return-statements
-        self, id: int, message: Optional[str] = None, **kwargs: Any
+        self,
+        id: int,
+        message: Optional[str] = None,
+        **kwargs: Any
     ) -> None:
         """TestOne should be in an FirstVersionOperationsMixin.
 
@@ -130,10 +133,10 @@ def test_one(  # pylint: disable=inconsistent-return-statements
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("test_one")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('test_one')
+        if api_version == '1.0.0':
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from .v2.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_one'".format(api_version))
@@ -146,15 +149,18 @@ def test_one(  # pylint: disable=inconsistent-return-statements
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
         return mixin_instance.test_one(id, message, **kwargs)
 
-    def test_paging(self, **kwargs: Any) -> Iterable["_models.ModelThree"]:
+    def test_paging(
+        self,
+        **kwargs: Any
+    ) -> Iterable["_models.ModelThree"]:
         """Returns ModelThree with optionalProperty 'paged'.
 
         :return: An iterator like instance of either ModelThree or the result of cls(response)
         :rtype: ~azure.core.paging.ItemPaged[~azure.multiapi.sample.v3.models.ModelThree]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("test_paging")
-        if api_version == "3.0.0":
+        api_version = self._get_api_version('test_paging')
+        if api_version == '3.0.0':
             from .v3.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_paging'".format(api_version))
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_serialization.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_serialization.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py
index 5dc86527950..c5088f7a288 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py
@@ -7,5 +7,4 @@
 # --------------------------------------------------------------------------
 
 from ._multiapi_service_client import MultiapiServiceClient
-
-__all__ = ["MultiapiServiceClient"]
+__all__ = ['MultiapiServiceClient']
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py
index ce9df4f2a2b..09ba5dda158 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py
@@ -19,7 +19,6 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials_async import AsyncTokenCredential
 
-
 class MultiapiServiceClientConfiguration:
     """Configuration for MultiapiServiceClient.
 
@@ -30,27 +29,32 @@ class MultiapiServiceClientConfiguration:
     :type credential: ~azure.core.credentials_async.AsyncTokenCredential
     """
 
-    def __init__(self, credential: "AsyncTokenCredential", **kwargs: Any) -> None:
+    def __init__(
+        self,
+        credential: "AsyncTokenCredential",
+        **kwargs: Any
+    ) -> None:
         if credential is None:
             raise ValueError("Parameter 'credential' must not be None.")
 
         self.credential = credential
-        self.credential_scopes = kwargs.pop("credential_scopes", ["https://management.azure.com/.default"])
-        kwargs.setdefault("sdk_moniker", "azure-multiapi-sample/{}".format(VERSION))
+        self.credential_scopes = kwargs.pop('credential_scopes', ['https://management.azure.com/.default'])
+        kwargs.setdefault('sdk_moniker', 'azure-multiapi-sample/{}'.format(VERSION))
         self.polling_interval = kwargs.get("polling_interval", 30)
         self._configure(**kwargs)
 
-    def _configure(self, **kwargs: Any) -> None:
-        self.user_agent_policy = kwargs.get("user_agent_policy") or policies.UserAgentPolicy(**kwargs)
-        self.headers_policy = kwargs.get("headers_policy") or policies.HeadersPolicy(**kwargs)
-        self.proxy_policy = kwargs.get("proxy_policy") or policies.ProxyPolicy(**kwargs)
-        self.logging_policy = kwargs.get("logging_policy") or policies.NetworkTraceLoggingPolicy(**kwargs)
-        self.http_logging_policy = kwargs.get("http_logging_policy") or ARMHttpLoggingPolicy(**kwargs)
-        self.retry_policy = kwargs.get("retry_policy") or policies.AsyncRetryPolicy(**kwargs)
-        self.custom_hook_policy = kwargs.get("custom_hook_policy") or policies.CustomHookPolicy(**kwargs)
-        self.redirect_policy = kwargs.get("redirect_policy") or policies.AsyncRedirectPolicy(**kwargs)
-        self.authentication_policy = kwargs.get("authentication_policy")
+    def _configure(
+        self,
+        **kwargs: Any
+    ) -> None:
+        self.user_agent_policy = kwargs.get('user_agent_policy') or policies.UserAgentPolicy(**kwargs)
+        self.headers_policy = kwargs.get('headers_policy') or policies.HeadersPolicy(**kwargs)
+        self.proxy_policy = kwargs.get('proxy_policy') or policies.ProxyPolicy(**kwargs)
+        self.logging_policy = kwargs.get('logging_policy') or policies.NetworkTraceLoggingPolicy(**kwargs)
+        self.http_logging_policy = kwargs.get('http_logging_policy') or ARMHttpLoggingPolicy(**kwargs)
+        self.retry_policy = kwargs.get('retry_policy') or policies.AsyncRetryPolicy(**kwargs)
+        self.custom_hook_policy = kwargs.get('custom_hook_policy') or policies.CustomHookPolicy(**kwargs)
+        self.redirect_policy = kwargs.get('redirect_policy') or policies.AsyncRedirectPolicy(**kwargs)
+        self.authentication_policy = kwargs.get('authentication_policy')
         if self.credential and not self.authentication_policy:
-            self.authentication_policy = AsyncARMChallengeAuthenticationPolicy(
-                self.credential, *self.credential_scopes, **kwargs
-            )
+            self.authentication_policy = AsyncARMChallengeAuthenticationPolicy(self.credential, *self.credential_scopes, **kwargs)
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py
index 70ad5c49b8e..f23620521ee 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py
@@ -26,7 +26,6 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials_async import AsyncTokenCredential
 
-
 class _SDKClient(object):
     def __init__(self, *args, **kwargs):
         """This is a fake class to support current implemetation of MultiApiClientMixin."
@@ -34,7 +33,6 @@ def __init__(self, *args, **kwargs):
         """
         pass
 
-
 class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClientMixin, _SDKClient):
     """Service client for multiapi client testing.
 
@@ -57,18 +55,16 @@ class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClient
     :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
     """
 
-    DEFAULT_API_VERSION = "3.0.0"
+    DEFAULT_API_VERSION = '3.0.0'
     _PROFILE_TAG = "azure.multiapi.sample.MultiapiServiceClient"
-    LATEST_PROFILE = ProfileDefinition(
-        {
-            _PROFILE_TAG: {
-                None: DEFAULT_API_VERSION,
-                "begin_test_lro": "1.0.0",
-                "begin_test_lro_and_paging": "1.0.0",
-                "test_one": "2.0.0",
-            }
-        },
-        _PROFILE_TAG + " latest",
+    LATEST_PROFILE = ProfileDefinition({
+        _PROFILE_TAG: {
+            None: DEFAULT_API_VERSION,
+            'begin_test_lro': '1.0.0',
+            'begin_test_lro_and_paging': '1.0.0',
+            'test_one': '2.0.0',
+        }},
+        _PROFILE_TAG + " latest"
     )
 
     def __init__(
@@ -80,7 +76,7 @@ def __init__(
         **kwargs: Any
     ) -> None:
         if api_version:
-            kwargs.setdefault("api_version", api_version)
+            kwargs.setdefault('api_version', api_version)
         self._config = MultiapiServiceClientConfiguration(credential, **kwargs)
         _policies = kwargs.pop("policies", None)
         if _policies is None:
@@ -101,7 +97,10 @@ def __init__(
                 self._config.http_logging_policy,
             ]
         self._client = AsyncARMPipelineClient(base_url=base_url, policies=_policies, **kwargs)
-        super(MultiapiServiceClient, self).__init__(api_version=api_version, profile=profile)
+        super(MultiapiServiceClient, self).__init__(
+            api_version=api_version,
+            profile=profile
+        )
 
     @classmethod
     def _models_dict(cls, api_version):
@@ -111,21 +110,18 @@ def _models_dict(cls, api_version):
     def models(cls, api_version=DEFAULT_API_VERSION):
         """Module depends on the API version:
 
-        * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
-        * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
-        * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
+           * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
+           * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
+           * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
         """
-        if api_version == "1.0.0":
+        if api_version == '1.0.0':
             from ..v1 import models
-
             return models
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from ..v2 import models
-
             return models
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from ..v3 import models
-
             return models
         raise ValueError("API version {} is not available".format(api_version))
 
@@ -133,57 +129,43 @@ def models(cls, api_version=DEFAULT_API_VERSION):
     def operation_group_one(self):
         """Instance depends on the API version:
 
-        * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.aio.operations.OperationGroupOneOperations>`
-        * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupOneOperations>`
-        * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupOneOperations>`
+           * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.aio.operations.OperationGroupOneOperations>`
+           * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupOneOperations>`
+           * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupOneOperations>`
         """
-        api_version = self._get_api_version("operation_group_one")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('operation_group_one')
+        if api_version == '1.0.0':
             from ..v1.aio.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from ..v2.aio.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from ..v3.aio.operations import OperationGroupOneOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_one'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(
-            self._client,
-            self._config,
-            Serializer(self._models_dict(api_version)),
-            Deserializer(self._models_dict(api_version)),
-            api_version,
-        )
+        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
 
     @property
     def operation_group_two(self):
         """Instance depends on the API version:
 
-        * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupTwoOperations>`
-        * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupTwoOperations>`
+           * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupTwoOperations>`
+           * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupTwoOperations>`
         """
-        api_version = self._get_api_version("operation_group_two")
-        if api_version == "2.0.0":
+        api_version = self._get_api_version('operation_group_two')
+        if api_version == '2.0.0':
             from ..v2.aio.operations import OperationGroupTwoOperations as OperationClass
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from ..v3.aio.operations import OperationGroupTwoOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_two'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(
-            self._client,
-            self._config,
-            Serializer(self._models_dict(api_version)),
-            Deserializer(self._models_dict(api_version)),
-            api_version,
-        )
+        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
 
     async def close(self):
         await self._client.close()
-
     async def __aenter__(self):
         await self._client.__aenter__()
         return self
-
     async def __aexit__(self, *exc_details):
         await self._client.__aexit__(*exc_details)
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py
index 41ce5c16130..67569987f5a 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py
@@ -21,7 +21,9 @@
 class MultiapiServiceClientOperationsMixin(object):
 
     async def begin_test_lro(
-        self, product: Optional[Union[_models.Product, IO[bytes]]] = None, **kwargs: Any
+        self,
+        product: Optional[Union[_models.Product, IO[bytes]]] = None,
+        **kwargs: Any
     ) -> AsyncLROPoller[_models.Product]:
         """Put in whatever shape of Product you want, will return a Product with id equal to 100.
 
@@ -33,8 +35,8 @@ async def begin_test_lro(
         :rtype: ~azure.core.polling.AsyncLROPoller[~azure.multiapi.sample.v1.models.Product]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("begin_test_lro")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('begin_test_lro')
+        if api_version == '1.0.0':
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro'".format(api_version))
@@ -66,8 +68,8 @@ async def begin_test_lro_and_paging(
          ~azure.core.polling.AsyncLROPoller[~azure.core.async_paging.AsyncItemPaged[~azure.multiapi.sample.v1.models.Product]]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("begin_test_lro_and_paging")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('begin_test_lro_and_paging')
+        if api_version == '1.0.0':
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro_and_paging'".format(api_version))
@@ -99,12 +101,12 @@ async def test_different_calls(
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("test_different_calls")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('test_different_calls')
+        if api_version == '1.0.0':
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from ..v2.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == "3.0.0":
+        elif api_version == '3.0.0':
             from ..v3.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_different_calls'".format(api_version))
@@ -115,11 +117,14 @@ async def test_different_calls(
         mixin_instance._serialize = Serializer(self._models_dict(api_version))
         mixin_instance._serialize.client_side_validation = False
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
-        return await mixin_instance.test_different_calls(
-            greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs
-        )
+        return await mixin_instance.test_different_calls(greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs)
 
-    async def test_one(self, id: int, message: Optional[str] = None, **kwargs: Any) -> None:
+    async def test_one(
+        self,
+        id: int,
+        message: Optional[str] = None,
+        **kwargs: Any
+    ) -> None:
         """TestOne should be in an FirstVersionOperationsMixin.
 
         :param id: An int parameter. Required.
@@ -130,10 +135,10 @@ async def test_one(self, id: int, message: Optional[str] = None, **kwargs: Any)
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("test_one")
-        if api_version == "1.0.0":
+        api_version = self._get_api_version('test_one')
+        if api_version == '1.0.0':
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == "2.0.0":
+        elif api_version == '2.0.0':
             from ..v2.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_one'".format(api_version))
@@ -146,15 +151,18 @@ async def test_one(self, id: int, message: Optional[str] = None, **kwargs: Any)
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
         return await mixin_instance.test_one(id, message, **kwargs)
 
-    def test_paging(self, **kwargs: Any) -> AsyncIterable["_models.ModelThree"]:
+    def test_paging(
+        self,
+        **kwargs: Any
+    ) -> AsyncIterable["_models.ModelThree"]:
         """Returns ModelThree with optionalProperty 'paged'.
 
         :return: An iterator like instance of either ModelThree or the result of cls(response)
         :rtype: ~azure.core.async_paging.AsyncItemPaged[~azure.multiapi.sample.v3.models.ModelThree]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version("test_paging")
-        if api_version == "3.0.0":
+        api_version = self._get_api_version('test_paging')
+        if api_version == '3.0.0':
             from ..v3.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_paging'".format(api_version))
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureBodyDuration/bodyduration/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureBodyDuration/bodyduration/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureBodyDuration/bodyduration/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureBodyDuration/bodyduration/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureReport/azurereport/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureReport/azurereport/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureReport/azurereport/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/AzureReport/azurereport/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomPollerPager/custompollerpager/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomPollerPager/custompollerpager/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomPollerPager/custompollerpager/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomPollerPager/custompollerpager/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomUrlPaging/custombaseurlpaging/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomUrlPaging/custombaseurlpaging/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomUrlPaging/custombaseurlpaging/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/CustomUrlPaging/custombaseurlpaging/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Head/head/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Head/head/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Head/head/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Head/head/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadExceptions/headexceptions/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadExceptions/headexceptions/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadExceptions/headexceptions/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadExceptions/headexceptions/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadWithAzureKeyCredentialPolicy/headwithazurekeycredentialpolicy/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadWithAzureKeyCredentialPolicy/headwithazurekeycredentialpolicy/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadWithAzureKeyCredentialPolicy/headwithazurekeycredentialpolicy/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/HeadWithAzureKeyCredentialPolicy/headwithazurekeycredentialpolicy/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Lro/lro/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Lro/lro/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Lro/lro/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Lro/lro/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/LroWithParameterizedEndpoints/lrowithparameterizedendpoints/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/LroWithParameterizedEndpoints/lrowithparameterizedendpoints/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/LroWithParameterizedEndpoints/lrowithparameterizedendpoints/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/LroWithParameterizedEndpoints/lrowithparameterizedendpoints/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/MixedApiVersion/mixedapiversion/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/MixedApiVersion/mixedapiversion/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/MixedApiVersion/mixedapiversion/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/MixedApiVersion/mixedapiversion/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/head/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/head/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/head/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/head/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/paging/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/paging/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/paging/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeBatch/azure/packagemode/batch/paging/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeCustomize/azure/packagemode/customize/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeCustomize/azure/packagemode/customize/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeCustomize/azure/packagemode/customize/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeCustomize/azure/packagemode/customize/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeDataPlane/azure/packagemode/dataplane/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeDataPlane/azure/packagemode/dataplane/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeDataPlane/azure/packagemode/dataplane/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeDataPlane/azure/packagemode/dataplane/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeMgmtPlane/azure/package/mode/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeMgmtPlane/azure/package/mode/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeMgmtPlane/azure/package/mode/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/PackageModeMgmtPlane/azure/package/mode/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Paging/paging/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Paging/paging/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Paging/paging/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/Paging/paging/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/StorageManagementClient/storage/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/StorageManagementClient/storage/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/StorageManagementClient/storage/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/StorageManagementClient/storage/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SubscriptionIdApiVersion/subscriptionidapiversion/_serialization.py b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SubscriptionIdApiVersion/subscriptionidapiversion/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SubscriptionIdApiVersion/subscriptionidapiversion/_serialization.py
+++ b/packages/autorest.python/test/azure/legacy/Expected/AcceptanceTests/SubscriptionIdApiVersion/subscriptionidapiversion/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureBodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureBodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureBodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureBodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureParameterGroupingVersionTolerant/azureparametergroupingversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureParameterGroupingVersionTolerant/azureparametergroupingversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureParameterGroupingVersionTolerant/azureparametergroupingversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureParameterGroupingVersionTolerant/azureparametergroupingversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureReportVersionTolerant/azurereportversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureReportVersionTolerant/azurereportversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureReportVersionTolerant/azurereportversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureReportVersionTolerant/azurereportversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureSpecialsVersionTolerant/azurespecialpropertiesversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureSpecialsVersionTolerant/azurespecialpropertiesversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureSpecialsVersionTolerant/azurespecialpropertiesversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/AzureSpecialsVersionTolerant/azurespecialpropertiesversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomPollerPagerVersionTolerant/custompollerpagerversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomPollerPagerVersionTolerant/custompollerpagerversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomPollerPagerVersionTolerant/custompollerpagerversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomPollerPagerVersionTolerant/custompollerpagerversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomUrlPagingVersionTolerant/custombaseurlpagingversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomUrlPagingVersionTolerant/custombaseurlpagingversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomUrlPagingVersionTolerant/custombaseurlpagingversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/CustomUrlPagingVersionTolerant/custombaseurlpagingversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadExceptionsVersionTolerant/headexceptionsversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadExceptionsVersionTolerant/headexceptionsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadExceptionsVersionTolerant/headexceptionsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadExceptionsVersionTolerant/headexceptionsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadVersionTolerant/headversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadVersionTolerant/headversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadVersionTolerant/headversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/HeadVersionTolerant/headversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroPagingVersionTolerant/lropagingversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroPagingVersionTolerant/lropagingversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroPagingVersionTolerant/lropagingversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroPagingVersionTolerant/lropagingversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroVersionTolerant/lroversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroVersionTolerant/lroversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroVersionTolerant/lroversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroVersionTolerant/lroversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroWithParameterizedEndpointsVersionTolerant/lrowithparameterizedendpointsversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroWithParameterizedEndpointsVersionTolerant/lrowithparameterizedendpointsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroWithParameterizedEndpointsVersionTolerant/lrowithparameterizedendpointsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/LroWithParameterizedEndpointsVersionTolerant/lrowithparameterizedendpointsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/PagingVersionTolerant/pagingversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/PagingVersionTolerant/pagingversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/PagingVersionTolerant/pagingversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/PagingVersionTolerant/pagingversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/StorageManagementClientVersionTolerant/storageversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/StorageManagementClientVersionTolerant/storageversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/StorageManagementClientVersionTolerant/storageversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/StorageManagementClientVersionTolerant/storageversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/SubscriptionIdApiVersionVersionTolerant/subscriptionidapiversionversiontolerant/_serialization.py b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/SubscriptionIdApiVersionVersionTolerant/subscriptionidapiversionversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/SubscriptionIdApiVersionVersionTolerant/subscriptionidapiversionversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/azure/version-tolerant/Expected/AcceptanceTests/SubscriptionIdApiVersionVersionTolerant/subscriptionidapiversionversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationCustomizedVersionTolerant/dpgcustomizationcustomizedversiontolerant/_serialization.py b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationCustomizedVersionTolerant/dpgcustomizationcustomizedversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationCustomizedVersionTolerant/dpgcustomizationcustomizedversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationCustomizedVersionTolerant/dpgcustomizationcustomizedversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationInitialVersionTolerant/dpgcustomizationinitialversiontolerant/_serialization.py b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationInitialVersionTolerant/dpgcustomizationinitialversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationInitialVersionTolerant/dpgcustomizationinitialversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGCustomizationInitialVersionTolerant/dpgcustomizationinitialversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenInitialVersionTolerant/dpgservicedriveninitialversiontolerant/_serialization.py b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenInitialVersionTolerant/dpgservicedriveninitialversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenInitialVersionTolerant/dpgservicedriveninitialversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenInitialVersionTolerant/dpgservicedriveninitialversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenUpdateOneVersionTolerant/dpgservicedrivenupdateoneversiontolerant/_serialization.py b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenUpdateOneVersionTolerant/dpgservicedrivenupdateoneversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenUpdateOneVersionTolerant/dpgservicedrivenupdateoneversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGServiceDrivenUpdateOneVersionTolerant/dpgservicedrivenupdateoneversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGTestModelsVersionTolerant/dpgtestmodelsversiontolerant/_serialization.py b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGTestModelsVersionTolerant/dpgtestmodelsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGTestModelsVersionTolerant/dpgtestmodelsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/dpg/version-tolerant/Expected/AcceptanceTests/DPGTestModelsVersionTolerant/dpgtestmodelsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/Multiapi/multiapi/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCredentialDefaultPolicy/multiapicredentialdefaultpolicy/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCustomBaseUrl/multiapicustombaseurl/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCustomBaseUrl/multiapicustombaseurl/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCustomBaseUrl/multiapicustombaseurl/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiCustomBaseUrl/multiapicustombaseurl/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiDataPlane/multiapidataplane/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiKeywordOnly/multiapikeywordonly/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiNoAsync/multiapinoasync/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiSecurity/multiapisecurity/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/MultiapiWithSubmodule/multiapiwithsubmodule/submodule/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/_serialization.py b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/_serialization.py
index 85c3c74d518..a94487cbf17 100644
--- a/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/_serialization.py
+++ b/packages/autorest.python/test/multiapi/Expected/AcceptanceTests/multiapicombiner/multiapicombiner/_serialization.py
@@ -309,7 +309,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -562,7 +562,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1440,7 +1440,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/unittests/storage_models/serialization.py b/packages/autorest.python/test/unittests/storage_models/serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/unittests/storage_models/serialization.py
+++ b/packages/autorest.python/test/unittests/storage_models/serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/AdditionalProperties/additionalproperties/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/AdditionalProperties/additionalproperties/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/AdditionalProperties/additionalproperties/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/AdditionalProperties/additionalproperties/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Anything/anything/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Anything/anything/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Anything/anything/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Anything/anything/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArray/bodyarray/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArray/bodyarray/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArray/bodyarray/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArray/bodyarray/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArrayWithNamespaceFolders/vanilla/body/array/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArrayWithNamespaceFolders/vanilla/body/array/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArrayWithNamespaceFolders/vanilla/body/array/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyArrayWithNamespaceFolders/vanilla/body/array/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBinary/bodybinary/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBinary/bodybinary/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBinary/bodybinary/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBinary/bodybinary/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBoolean/bodyboolean/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBoolean/bodyboolean/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBoolean/bodyboolean/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyBoolean/bodyboolean/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByte/bodybyte/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByte/bodybyte/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByte/bodybyte/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByte/bodybyte/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByteWithPackageName/bodybytewithpackagename/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByteWithPackageName/bodybytewithpackagename/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByteWithPackageName/bodybytewithpackagename/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyByteWithPackageName/bodybytewithpackagename/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDate/bodydate/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDate/bodydate/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDate/bodydate/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDate/bodydate/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTime/bodydatetime/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTime/bodydatetime/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTime/bodydatetime/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTime/bodydatetime/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTimeRfc1123/bodydatetimerfc1123/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTimeRfc1123/bodydatetimerfc1123/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTimeRfc1123/bodydatetimerfc1123/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDateTimeRfc1123/bodydatetimerfc1123/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDictionary/bodydictionary/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDictionary/bodydictionary/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDictionary/bodydictionary/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDictionary/bodydictionary/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDuration/bodyduration/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDuration/bodyduration/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDuration/bodyduration/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyDuration/bodyduration/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFile/bodyfile/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFile/bodyfile/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFile/bodyfile/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFile/bodyfile/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormData/bodyformdata/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormData/bodyformdata/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormData/bodyformdata/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormData/bodyformdata/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormUrlEncodedData/bodyformurlencodeddata/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormUrlEncodedData/bodyformurlencodeddata/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormUrlEncodedData/bodyformurlencodeddata/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyFormUrlEncodedData/bodyformurlencodeddata/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyInteger/bodyinteger/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyInteger/bodyinteger/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyInteger/bodyinteger/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyInteger/bodyinteger/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyNumber/bodynumber/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyNumber/bodynumber/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyNumber/bodynumber/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyNumber/bodynumber/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyString/bodystring/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyString/bodystring/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyString/bodystring/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyString/bodystring/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyTime/bodytime/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyTime/bodytime/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyTime/bodytime/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/BodyTime/bodytime/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ClientEnum/clientenum/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ClientEnum/clientenum/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ClientEnum/clientenum/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ClientEnum/clientenum/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Constants/constants/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Constants/constants/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Constants/constants/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Constants/constants/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/CustomBaseUriMoreOptions/custombaseurlmoreoptions/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/CustomBaseUriMoreOptions/custombaseurlmoreoptions/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/CustomBaseUriMoreOptions/custombaseurlmoreoptions/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/CustomBaseUriMoreOptions/custombaseurlmoreoptions/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ErrorWithSecrets/errorwithsecrets/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ErrorWithSecrets/errorwithsecrets/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ErrorWithSecrets/errorwithsecrets/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ErrorWithSecrets/errorwithsecrets/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ExtensibleEnums/extensibleenumsswagger/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ExtensibleEnums/extensibleenumsswagger/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ExtensibleEnums/extensibleenumsswagger/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ExtensibleEnums/extensibleenumsswagger/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Header/header/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Header/header/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Header/header/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Header/header/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Http/httpinfrastructure/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Http/httpinfrastructure/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Http/httpinfrastructure/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Http/httpinfrastructure/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/IncorrectErrorResponse/incorrecterrorresponse/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/IncorrectErrorResponse/incorrecterrorresponse/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/IncorrectErrorResponse/incorrecterrorresponse/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/IncorrectErrorResponse/incorrecterrorresponse/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/InternalOperation/internaloperation/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/InternalOperation/internaloperation/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/InternalOperation/internaloperation/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/InternalOperation/internaloperation/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MediaTypes/mediatypes/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MediaTypes/mediatypes/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MediaTypes/mediatypes/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MediaTypes/mediatypes/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MergePatchJson/mergepatchjson/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MergePatchJson/mergepatchjson/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MergePatchJson/mergepatchjson/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MergePatchJson/mergepatchjson/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ModelFlattening/modelflattening/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ModelFlattening/modelflattening/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ModelFlattening/modelflattening/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ModelFlattening/modelflattening/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MultipleInheritance/multipleinheritance/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MultipleInheritance/multipleinheritance/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MultipleInheritance/multipleinheritance/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/MultipleInheritance/multipleinheritance/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NoOperations/nooperations/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NoOperations/nooperations/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NoOperations/nooperations/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NoOperations/nooperations/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NonStringEnums/nonstringenums/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NonStringEnums/nonstringenums/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NonStringEnums/nonstringenums/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/NonStringEnums/nonstringenums/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ObjectType/objecttype/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ObjectType/objecttype/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ObjectType/objecttype/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ObjectType/objecttype/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/PackageModeDataPlane/packagemode/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/PackageModeDataPlane/packagemode/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/PackageModeDataPlane/packagemode/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/PackageModeDataPlane/packagemode/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterFlattening/parameterflattening/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterFlattening/parameterflattening/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterFlattening/parameterflattening/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterFlattening/parameterflattening/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterizedEndpoint/parameterizedendpoint/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterizedEndpoint/parameterizedendpoint/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterizedEndpoint/parameterizedendpoint/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ParameterizedEndpoint/parameterizedendpoint/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Report/report/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Report/report/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Report/report/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Report/report/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ReservedWords/reservedwords/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ReservedWords/reservedwords/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ReservedWords/reservedwords/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/ReservedWords/reservedwords/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwagger/securityaadswagger/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwaggerCredentialFlag/securityaadswaggercredentialflag/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwaggerCredentialFlag/securityaadswaggercredentialflag/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwaggerCredentialFlag/securityaadswaggercredentialflag/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityAadSwaggerCredentialFlag/securityaadswaggercredentialflag/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwagger/securitykeyswagger/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwaggerCredentialFlag/securitykeyswaggercredentialflag/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwaggerCredentialFlag/securitykeyswaggercredentialflag/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwaggerCredentialFlag/securitykeyswaggercredentialflag/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/SecurityKeySwaggerCredentialFlag/securitykeyswaggercredentialflag/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/UrlMultiCollectionFormat/urlmulticollectionformat/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/UrlMultiCollectionFormat/urlmulticollectionformat/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/UrlMultiCollectionFormat/urlmulticollectionformat/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/UrlMultiCollectionFormat/urlmulticollectionformat/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Xml/xmlservice/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Xml/xmlservice/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Xml/xmlservice/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/Xml/xmlservice/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/XmsErrorResponse/xmserrorresponse/_serialization.py b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/XmsErrorResponse/xmserrorresponse/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/XmsErrorResponse/xmserrorresponse/_serialization.py
+++ b/packages/autorest.python/test/vanilla/legacy/Expected/AcceptanceTests/XmsErrorResponse/xmserrorresponse/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AdditionalPropertiesVersionTolerant/additionalpropertiesversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AdditionalPropertiesVersionTolerant/additionalpropertiesversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AdditionalPropertiesVersionTolerant/additionalpropertiesversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AdditionalPropertiesVersionTolerant/additionalpropertiesversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AnythingVersionTolerant/anythingversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AnythingVersionTolerant/anythingversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AnythingVersionTolerant/anythingversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/AnythingVersionTolerant/anythingversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyArrayVersionTolerant/bodyarrayversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyArrayVersionTolerant/bodyarrayversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyArrayVersionTolerant/bodyarrayversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyArrayVersionTolerant/bodyarrayversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBinaryVersionTolerant/bodybinaryversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBinaryVersionTolerant/bodybinaryversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBinaryVersionTolerant/bodybinaryversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBinaryVersionTolerant/bodybinaryversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBooleanVersionTolerant/bodybooleanversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBooleanVersionTolerant/bodybooleanversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBooleanVersionTolerant/bodybooleanversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyBooleanVersionTolerant/bodybooleanversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyByteVersionTolerant/bodybyteversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyByteVersionTolerant/bodybyteversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyByteVersionTolerant/bodybyteversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyByteVersionTolerant/bodybyteversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyComplexVersionTolerant/bodycomplexversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyComplexVersionTolerant/bodycomplexversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyComplexVersionTolerant/bodycomplexversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyComplexVersionTolerant/bodycomplexversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeRfc1123VersionTolerant/bodydatetimerfc1123versiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeRfc1123VersionTolerant/bodydatetimerfc1123versiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeRfc1123VersionTolerant/bodydatetimerfc1123versiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeRfc1123VersionTolerant/bodydatetimerfc1123versiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeVersionTolerant/bodydatetimeversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeVersionTolerant/bodydatetimeversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeVersionTolerant/bodydatetimeversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateTimeVersionTolerant/bodydatetimeversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateVersionTolerant/bodydateversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateVersionTolerant/bodydateversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateVersionTolerant/bodydateversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDateVersionTolerant/bodydateversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDictionaryVersionTolerant/bodydictionaryversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDictionaryVersionTolerant/bodydictionaryversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDictionaryVersionTolerant/bodydictionaryversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDictionaryVersionTolerant/bodydictionaryversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyDurationVersionTolerant/bodydurationversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFileVersionTolerant/bodyfileversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFileVersionTolerant/bodyfileversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFileVersionTolerant/bodyfileversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFileVersionTolerant/bodyfileversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormDataVersionTolerant/bodyformdataversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormDataVersionTolerant/bodyformdataversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormDataVersionTolerant/bodyformdataversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormDataVersionTolerant/bodyformdataversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormUrlEncodedDataVersionTolerant/bodyformurlencodeddataversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormUrlEncodedDataVersionTolerant/bodyformurlencodeddataversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormUrlEncodedDataVersionTolerant/bodyformurlencodeddataversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyFormUrlEncodedDataVersionTolerant/bodyformurlencodeddataversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyIntegerVersionTolerant/bodyintegerversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyIntegerVersionTolerant/bodyintegerversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyIntegerVersionTolerant/bodyintegerversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyIntegerVersionTolerant/bodyintegerversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyNumberVersionTolerant/bodynumberversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyNumberVersionTolerant/bodynumberversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyNumberVersionTolerant/bodynumberversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyNumberVersionTolerant/bodynumberversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyStringVersionTolerant/bodystringversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyStringVersionTolerant/bodystringversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyStringVersionTolerant/bodystringversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyStringVersionTolerant/bodystringversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyTimeVersionTolerant/bodytimeversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyTimeVersionTolerant/bodytimeversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyTimeVersionTolerant/bodytimeversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/BodyTimeVersionTolerant/bodytimeversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ClientEnumVersionTolerant/clientenumversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ClientEnumVersionTolerant/clientenumversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ClientEnumVersionTolerant/clientenumversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ClientEnumVersionTolerant/clientenumversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ConstantsVersionTolerant/constantsversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ConstantsVersionTolerant/constantsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ConstantsVersionTolerant/constantsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ConstantsVersionTolerant/constantsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriMoreOptionsVersionTolerant/custombaseurlmoreoptionsversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriMoreOptionsVersionTolerant/custombaseurlmoreoptionsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriMoreOptionsVersionTolerant/custombaseurlmoreoptionsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriMoreOptionsVersionTolerant/custombaseurlmoreoptionsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/CustomBaseUriVersionTolerant/custombaseurlversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ErrorWithSecretsVersionTolerant/errorwithsecretsversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ErrorWithSecretsVersionTolerant/errorwithsecretsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ErrorWithSecretsVersionTolerant/errorwithsecretsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ErrorWithSecretsVersionTolerant/errorwithsecretsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ExtensibleEnumsVersionTolerant/extensibleenumsswaggerversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ExtensibleEnumsVersionTolerant/extensibleenumsswaggerversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ExtensibleEnumsVersionTolerant/extensibleenumsswaggerversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ExtensibleEnumsVersionTolerant/extensibleenumsswaggerversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HeaderVersionTolerant/headerversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HeaderVersionTolerant/headerversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HeaderVersionTolerant/headerversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HeaderVersionTolerant/headerversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HttpVersionTolerant/httpinfrastructureversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HttpVersionTolerant/httpinfrastructureversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HttpVersionTolerant/httpinfrastructureversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/HttpVersionTolerant/httpinfrastructureversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/IncorrectErrorResponseVersionTolerant/incorrecterrorresponseversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/IncorrectErrorResponseVersionTolerant/incorrecterrorresponseversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/IncorrectErrorResponseVersionTolerant/incorrecterrorresponseversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/IncorrectErrorResponseVersionTolerant/incorrecterrorresponseversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MediaTypesVersionTolerant/mediatypesversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MediaTypesVersionTolerant/mediatypesversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MediaTypesVersionTolerant/mediatypesversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MediaTypesVersionTolerant/mediatypesversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MergePatchJsonVersionTolerant/mergepatchjsonversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MergePatchJsonVersionTolerant/mergepatchjsonversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MergePatchJsonVersionTolerant/mergepatchjsonversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MergePatchJsonVersionTolerant/mergepatchjsonversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ModelFlatteningVersionTolerant/modelflatteningversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ModelFlatteningVersionTolerant/modelflatteningversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ModelFlatteningVersionTolerant/modelflatteningversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ModelFlatteningVersionTolerant/modelflatteningversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MultipleInheritanceVersionTolerant/multipleinheritanceversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MultipleInheritanceVersionTolerant/multipleinheritanceversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MultipleInheritanceVersionTolerant/multipleinheritanceversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/MultipleInheritanceVersionTolerant/multipleinheritanceversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoNamespaceFlagVersionTolerant/anything_client/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoNamespaceFlagVersionTolerant/anything_client/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoNamespaceFlagVersionTolerant/anything_client/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoNamespaceFlagVersionTolerant/anything_client/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoOperationsVersionTolerant/nooperationsversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoOperationsVersionTolerant/nooperationsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoOperationsVersionTolerant/nooperationsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NoOperationsVersionTolerant/nooperationsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NonStringEnumsVersionTolerant/nonstringenumsversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NonStringEnumsVersionTolerant/nonstringenumsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NonStringEnumsVersionTolerant/nonstringenumsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/NonStringEnumsVersionTolerant/nonstringenumsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ObjectTypeVersionTolerant/objecttypeversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ObjectTypeVersionTolerant/objecttypeversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ObjectTypeVersionTolerant/objecttypeversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ObjectTypeVersionTolerant/objecttypeversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterFlatteningVersionTolerant/parameterflatteningversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterFlatteningVersionTolerant/parameterflatteningversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterFlatteningVersionTolerant/parameterflatteningversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterFlatteningVersionTolerant/parameterflatteningversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterizedEndpointVersionTolerant/parameterizedendpointversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterizedEndpointVersionTolerant/parameterizedendpointversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterizedEndpointVersionTolerant/parameterizedendpointversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ParameterizedEndpointVersionTolerant/parameterizedendpointversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReportVersionTolerant/reportversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReportVersionTolerant/reportversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReportVersionTolerant/reportversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReportVersionTolerant/reportversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/RequiredOptionalVersionTolerant/requiredoptionalversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/RequiredOptionalVersionTolerant/requiredoptionalversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/RequiredOptionalVersionTolerant/requiredoptionalversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/RequiredOptionalVersionTolerant/requiredoptionalversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReservedWordsVersionTolerant/reservedwordsversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReservedWordsVersionTolerant/reservedwordsversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReservedWordsVersionTolerant/reservedwordsversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ReservedWordsVersionTolerant/reservedwordsversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityAadSwaggerVersionTolerant/securityaadswaggerversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityAadSwaggerVersionTolerant/securityaadswaggerversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityAadSwaggerVersionTolerant/securityaadswaggerversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityAadSwaggerVersionTolerant/securityaadswaggerversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityKeySwaggerVersionTolerant/securitykeyswaggerversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityKeySwaggerVersionTolerant/securitykeyswaggerversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityKeySwaggerVersionTolerant/securitykeyswaggerversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/SecurityKeySwaggerVersionTolerant/securitykeyswaggerversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlMultiCollectionFormatVersionTolerant/urlmulticollectionformatversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlMultiCollectionFormatVersionTolerant/urlmulticollectionformatversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlMultiCollectionFormatVersionTolerant/urlmulticollectionformatversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlMultiCollectionFormatVersionTolerant/urlmulticollectionformatversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlVersionTolerant/urlversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlVersionTolerant/urlversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlVersionTolerant/urlversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/UrlVersionTolerant/urlversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ValidationVersionTolerant/validationversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ValidationVersionTolerant/validationversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ValidationVersionTolerant/validationversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/ValidationVersionTolerant/validationversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmlVersionTolerant/xmlserviceversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmlVersionTolerant/xmlserviceversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmlVersionTolerant/xmlserviceversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmlVersionTolerant/xmlserviceversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmsErrorResponseVersionTolerant/xmserrorresponseversiontolerant/_serialization.py b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmsErrorResponseVersionTolerant/xmserrorresponseversiontolerant/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmsErrorResponseVersionTolerant/xmserrorresponseversiontolerant/_serialization.py
+++ b/packages/autorest.python/test/vanilla/version-tolerant/Expected/AcceptanceTests/XmsErrorResponseVersionTolerant/xmserrorresponseversiontolerant/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/_serialization.py b/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/authentication-api-key/authentication/apikey/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/_serialization.py b/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/authentication-http-custom/authentication/http/custom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/_serialization.py b/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/authentication-oauth2/authentication/oauth2/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/authentication-union/authentication/union/_serialization.py b/packages/typespec-python/test/azure/generated/authentication-union/authentication/union/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/authentication-union/authentication/union/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/authentication-union/authentication/union/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/_serialization.py b/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-client-generator-core-access/specs/azure/clientgenerator/core/access/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-client-generator-core-flatten-property/specs/azure/clientgenerator/core/flattenproperty/_serialization.py b/packages/typespec-python/test/azure/generated/azure-client-generator-core-flatten-property/specs/azure/clientgenerator/core/flattenproperty/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-client-generator-core-flatten-property/specs/azure/clientgenerator/core/flattenproperty/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-client-generator-core-flatten-property/specs/azure/clientgenerator/core/flattenproperty/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-client-generator-core-usage/specs/azure/clientgenerator/core/usage/_serialization.py b/packages/typespec-python/test/azure/generated/azure-client-generator-core-usage/specs/azure/clientgenerator/core/usage/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-client-generator-core-usage/specs/azure/clientgenerator/core/usage/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-client-generator-core-usage/specs/azure/clientgenerator/core/usage/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/_serialization.py b/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-basic/specs/azure/core/basic/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/_serialization.py b/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-lro-standard/specs/azure/core/lro/standard/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-core-model/specs/azure/core/model/_serialization.py b/packages/typespec-python/test/azure/generated/azure-core-model/specs/azure/core/model/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-model/specs/azure/core/model/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-model/specs/azure/core/model/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-core-page/specs/azure/core/page/_serialization.py b/packages/typespec-python/test/azure/generated/azure-core-page/specs/azure/core/page/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-page/specs/azure/core/page/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-page/specs/azure/core/page/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-core-scalar/specs/azure/core/scalar/_serialization.py b/packages/typespec-python/test/azure/generated/azure-core-scalar/specs/azure/core/scalar/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-scalar/specs/azure/core/scalar/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-scalar/specs/azure/core/scalar/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/_serialization.py b/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-core-traits/specs/azure/core/traits/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-example-basic/specs/azure/example/basic/_serialization.py b/packages/typespec-python/test/azure/generated/azure-example-basic/specs/azure/example/basic/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-example-basic/specs/azure/example/basic/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-example-basic/specs/azure/example/basic/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-resource-manager-common-properties/azure/resourcemanager/commonproperties/_serialization.py b/packages/typespec-python/test/azure/generated/azure-resource-manager-common-properties/azure/resourcemanager/commonproperties/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-resource-manager-common-properties/azure/resourcemanager/commonproperties/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-resource-manager-common-properties/azure/resourcemanager/commonproperties/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-resource-manager-resources/azure/resourcemanager/resources/_serialization.py b/packages/typespec-python/test/azure/generated/azure-resource-manager-resources/azure/resourcemanager/resources/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-resource-manager-resources/azure/resourcemanager/resources/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-resource-manager-resources/azure/resourcemanager/resources/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azure-special-headers-client-request-id/azure/specialheaders/xmsclientrequestid/_serialization.py b/packages/typespec-python/test/azure/generated/azure-special-headers-client-request-id/azure/specialheaders/xmsclientrequestid/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azure-special-headers-client-request-id/azure/specialheaders/xmsclientrequestid/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azure-special-headers-client-request-id/azure/specialheaders/xmsclientrequestid/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/_serialization.py b/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/azurecore-lro-rpc/azurecore/lro/rpc/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/client-naming/client/naming/_serialization.py b/packages/typespec-python/test/azure/generated/client-naming/client/naming/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/client-naming/client/naming/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/client-naming/client/naming/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/client-structure-default/client/structure/service/_serialization.py b/packages/typespec-python/test/azure/generated/client-structure-default/client/structure/service/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/client-structure-default/client/structure/service/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/client-structure-default/client/structure/service/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py b/packages/typespec-python/test/azure/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py b/packages/typespec-python/test/azure/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py b/packages/typespec-python/test/azure/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/encode-bytes/encode/bytes/_serialization.py b/packages/typespec-python/test/azure/generated/encode-bytes/encode/bytes/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/encode-bytes/encode/bytes/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/encode-bytes/encode/bytes/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/encode-datetime/encode/datetime/_serialization.py b/packages/typespec-python/test/azure/generated/encode-datetime/encode/datetime/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/encode-datetime/encode/datetime/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/encode-datetime/encode/datetime/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/encode-duration/encode/duration/_serialization.py b/packages/typespec-python/test/azure/generated/encode-duration/encode/duration/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/encode-duration/encode/duration/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/encode-duration/encode/duration/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/encode-numeric/encode/numeric/_serialization.py b/packages/typespec-python/test/azure/generated/encode-numeric/encode/numeric/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/encode-numeric/encode/numeric/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/encode-numeric/encode/numeric/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py b/packages/typespec-python/test/azure/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/headasbooleantrue/headasbooleantrue/_serialization.py b/packages/typespec-python/test/azure/generated/headasbooleantrue/headasbooleantrue/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/headasbooleantrue/headasbooleantrue/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/headasbooleantrue/headasbooleantrue/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/parameters-basic/parameters/basic/_serialization.py b/packages/typespec-python/test/azure/generated/parameters-basic/parameters/basic/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/parameters-basic/parameters/basic/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/parameters-basic/parameters/basic/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py b/packages/typespec-python/test/azure/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/parameters-collection-format/parameters/collectionformat/_serialization.py b/packages/typespec-python/test/azure/generated/parameters-collection-format/parameters/collectionformat/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/parameters-collection-format/parameters/collectionformat/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/parameters-collection-format/parameters/collectionformat/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/parameters-spread/parameters/spread/_serialization.py b/packages/typespec-python/test/azure/generated/parameters-spread/parameters/spread/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/parameters-spread/parameters/spread/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/parameters-spread/parameters/spread/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py b/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py b/packages/typespec-python/test/azure/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/payload-media-type/payload/mediatype/_serialization.py b/packages/typespec-python/test/azure/generated/payload-media-type/payload/mediatype/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/payload-media-type/payload/mediatype/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/payload-media-type/payload/mediatype/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/payload-multipart/payload/multipart/_serialization.py b/packages/typespec-python/test/azure/generated/payload-multipart/payload/multipart/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/payload-multipart/payload/multipart/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/payload-multipart/payload/multipart/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/_serialization.py b/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/payload-pageable/payload/pageable/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/payload-xml/payload/xml/_serialization.py b/packages/typespec-python/test/azure/generated/payload-xml/payload/xml/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/payload-xml/payload/xml/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/payload-xml/payload/xml/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py b/packages/typespec-python/test/azure/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py b/packages/typespec-python/test/azure/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/routes/routes/_serialization.py b/packages/typespec-python/test/azure/generated/routes/routes/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/routes/routes/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/routes/routes/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py b/packages/typespec-python/test/azure/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py b/packages/typespec-python/test/azure/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/server-path-multiple/server/path/multiple/_serialization.py b/packages/typespec-python/test/azure/generated/server-path-multiple/server/path/multiple/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/server-path-multiple/server/path/multiple/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/server-path-multiple/server/path/multiple/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/server-path-single/server/path/single/_serialization.py b/packages/typespec-python/test/azure/generated/server-path-single/server/path/single/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/server-path-single/server/path/single/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/server-path-single/server/path/single/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py b/packages/typespec-python/test/azure/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/server-versions-versioned/server/versions/versioned/_serialization.py b/packages/typespec-python/test/azure/generated/server-versions-versioned/server/versions/versioned/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/server-versions-versioned/server/versions/versioned/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/server-versions-versioned/server/versions/versioned/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py b/packages/typespec-python/test/azure/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py b/packages/typespec-python/test/azure/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/special-words/specialwords/_serialization.py b/packages/typespec-python/test/azure/generated/special-words/specialwords/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/special-words/specialwords/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/special-words/specialwords/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-array/typetest/array/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-array/typetest/array/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-array/typetest/array/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-array/typetest/array/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-dictionary/typetest/dictionary/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-dictionary/typetest/dictionary/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-dictionary/typetest/dictionary/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-dictionary/typetest/dictionary/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-empty/typetest/model/empty/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-empty/typetest/model/empty/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-empty/typetest/model/empty/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-empty/typetest/model/empty/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-usage/typetest/model/usage/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-property-optional/typetest/property/optional/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-property-optional/typetest/property/optional/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-property-optional/typetest/property/optional/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-property-optional/typetest/property/optional/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-scalar/typetest/scalar/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-scalar/typetest/scalar/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-scalar/typetest/scalar/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-scalar/typetest/scalar/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/_serialization.py b/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/typetest-union/typetest/union/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/versioning-added/versioning/added/_serialization.py b/packages/typespec-python/test/azure/generated/versioning-added/versioning/added/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/versioning-added/versioning/added/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/versioning-added/versioning/added/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py b/packages/typespec-python/test/azure/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/versioning-removed/versioning/removed/_serialization.py b/packages/typespec-python/test/azure/generated/versioning-removed/versioning/removed/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/versioning-removed/versioning/removed/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/versioning-removed/versioning/removed/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py b/packages/typespec-python/test/azure/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py b/packages/typespec-python/test/azure/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/azure/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py b/packages/typespec-python/test/azure/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py
index e2ad5186990..b24ab288545 100644
--- a/packages/typespec-python/test/azure/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py
+++ b/packages/typespec-python/test/azure/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/_serialization.py b/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/authentication-api-key/authentication/apikey/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/_serialization.py b/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/authentication-http-custom/authentication/http/custom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/_serialization.py b/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/authentication-oauth2/authentication/oauth2/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/authentication-union/authentication/union/_serialization.py b/packages/typespec-python/test/unbranded/generated/authentication-union/authentication/union/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/authentication-union/authentication/union/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/authentication-union/authentication/union/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/client-naming/client/naming/_serialization.py b/packages/typespec-python/test/unbranded/generated/client-naming/client/naming/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/client-naming/client/naming/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/client-naming/client/naming/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/client-structure-default/client/structure/service/_serialization.py b/packages/typespec-python/test/unbranded/generated/client-structure-default/client/structure/service/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/client-structure-default/client/structure/service/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/client-structure-default/client/structure/service/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py b/packages/typespec-python/test/unbranded/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/client-structure-multiclient/client/structure/multiclient/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py b/packages/typespec-python/test/unbranded/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/client-structure-renamedoperation/client/structure/renamedoperation/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py b/packages/typespec-python/test/unbranded/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/client-structure-twooperationgroup/client/structure/twooperationgroup/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/encode-bytes/encode/bytes/_serialization.py b/packages/typespec-python/test/unbranded/generated/encode-bytes/encode/bytes/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/encode-bytes/encode/bytes/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/encode-bytes/encode/bytes/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/encode-datetime/encode/datetime/_serialization.py b/packages/typespec-python/test/unbranded/generated/encode-datetime/encode/datetime/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/encode-datetime/encode/datetime/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/encode-datetime/encode/datetime/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/encode-duration/encode/duration/_serialization.py b/packages/typespec-python/test/unbranded/generated/encode-duration/encode/duration/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/encode-duration/encode/duration/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/encode-duration/encode/duration/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/encode-numeric/encode/numeric/_serialization.py b/packages/typespec-python/test/unbranded/generated/encode-numeric/encode/numeric/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/encode-numeric/encode/numeric/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/encode-numeric/encode/numeric/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py b/packages/typespec-python/test/unbranded/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/headasbooleanfalse/headasbooleanfalse/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/headasbooleantrue/headasbooleantrue/_serialization.py b/packages/typespec-python/test/unbranded/generated/headasbooleantrue/headasbooleantrue/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/headasbooleantrue/headasbooleantrue/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/headasbooleantrue/headasbooleantrue/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/parameters-basic/parameters/basic/_serialization.py b/packages/typespec-python/test/unbranded/generated/parameters-basic/parameters/basic/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/parameters-basic/parameters/basic/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/parameters-basic/parameters/basic/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py b/packages/typespec-python/test/unbranded/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/parameters-body-optionality/parameters/bodyoptionality/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/parameters-collection-format/parameters/collectionformat/_serialization.py b/packages/typespec-python/test/unbranded/generated/parameters-collection-format/parameters/collectionformat/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/parameters-collection-format/parameters/collectionformat/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/parameters-collection-format/parameters/collectionformat/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/parameters-spread/parameters/spread/_serialization.py b/packages/typespec-python/test/unbranded/generated/parameters-spread/parameters/spread/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/parameters-spread/parameters/spread/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/parameters-spread/parameters/spread/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py b/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-content-negotiation/payload/contentnegotiation/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py b/packages/typespec-python/test/unbranded/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-json-merge-patch/payload/jsonmergepatch/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/payload-media-type/payload/mediatype/_serialization.py b/packages/typespec-python/test/unbranded/generated/payload-media-type/payload/mediatype/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-media-type/payload/mediatype/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-media-type/payload/mediatype/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/payload-multipart/payload/multipart/_serialization.py b/packages/typespec-python/test/unbranded/generated/payload-multipart/payload/multipart/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-multipart/payload/multipart/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-multipart/payload/multipart/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/_serialization.py b/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-pageable/payload/pageable/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/payload-xml/payload/xml/_serialization.py b/packages/typespec-python/test/unbranded/generated/payload-xml/payload/xml/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/payload-xml/payload/xml/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/payload-xml/payload/xml/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py b/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven1/resiliency/srv/driven1/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py b/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/resiliency-srv-driven2/resiliency/srv/driven2/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/routes/routes/_serialization.py b/packages/typespec-python/test/unbranded/generated/routes/routes/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/routes/routes/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/routes/routes/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py b/packages/typespec-python/test/unbranded/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/serialization-encoded-name-json/serialization/encodedname/json/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py b/packages/typespec-python/test/unbranded/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/server-endpoint-not-defined/server/endpoint/notdefined/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/server-path-multiple/server/path/multiple/_serialization.py b/packages/typespec-python/test/unbranded/generated/server-path-multiple/server/path/multiple/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/server-path-multiple/server/path/multiple/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/server-path-multiple/server/path/multiple/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/server-path-single/server/path/single/_serialization.py b/packages/typespec-python/test/unbranded/generated/server-path-single/server/path/single/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/server-path-single/server/path/single/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/server-path-single/server/path/single/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py b/packages/typespec-python/test/unbranded/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/server-versions-not-versioned/server/versions/notversioned/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/server-versions-versioned/server/versions/versioned/_serialization.py b/packages/typespec-python/test/unbranded/generated/server-versions-versioned/server/versions/versioned/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/server-versions-versioned/server/versions/versioned/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/server-versions-versioned/server/versions/versioned/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py b/packages/typespec-python/test/unbranded/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/special-headers-conditional-request/specialheaders/conditionalrequest/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py b/packages/typespec-python/test/unbranded/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/special-headers-repeatability/specialheaders/repeatability/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/special-words/specialwords/_serialization.py b/packages/typespec-python/test/unbranded/generated/special-words/specialwords/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/special-words/specialwords/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/special-words/specialwords/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-array/typetest/array/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-array/typetest/array/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-array/typetest/array/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-array/typetest/array/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-dictionary/typetest/dictionary/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-dictionary/typetest/dictionary/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-dictionary/typetest/dictionary/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-dictionary/typetest/dictionary/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-enum-extensible/typetest/enum/extensible/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-enum-fixed/typetest/enum/fixed/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-empty/typetest/model/empty/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-empty/typetest/model/empty/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-empty/typetest/model/empty/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-empty/typetest/model/empty/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-enumdiscriminator/typetest/model/enumdiscriminator/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-nesteddiscriminator/typetest/model/nesteddiscriminator/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-notdiscriminated/typetest/model/notdiscriminated/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-recursive/typetest/model/recursive/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-singlediscriminator/typetest/model/singlediscriminator/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-usage/typetest/model/usage/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-model-visibility/typetest/model/visibility/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-property-additionalproperties/typetest/property/additionalproperties/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-property-nullable/typetest/property/nullable/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-property-optional/typetest/property/optional/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-property-optional/typetest/property/optional/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-property-optional/typetest/property/optional/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-property-optional/typetest/property/optional/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-property-valuetypes/typetest/property/valuetypes/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-scalar/typetest/scalar/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-scalar/typetest/scalar/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-scalar/typetest/scalar/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-scalar/typetest/scalar/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/_serialization.py b/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/typetest-union/typetest/union/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/versioning-added/versioning/added/_serialization.py b/packages/typespec-python/test/unbranded/generated/versioning-added/versioning/added/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/versioning-added/versioning/added/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/versioning-added/versioning/added/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py b/packages/typespec-python/test/unbranded/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/versioning-madeoptional/versioning/madeoptional/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/versioning-removed/versioning/removed/_serialization.py b/packages/typespec-python/test/unbranded/generated/versioning-removed/versioning/removed/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/versioning-removed/versioning/removed/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/versioning-removed/versioning/removed/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py b/packages/typespec-python/test/unbranded/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/versioning-renamedfrom/versioning/renamedfrom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py b/packages/typespec-python/test/unbranded/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/versioning-returntypechangedfrom/versioning/returntypechangedfrom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.
diff --git a/packages/typespec-python/test/unbranded/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py b/packages/typespec-python/test/unbranded/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py
index 7025546d834..3b56a8b5869 100644
--- a/packages/typespec-python/test/unbranded/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py
+++ b/packages/typespec-python/test/unbranded/generated/versioning-typechangedfrom/versioning/typechangedfrom/_serialization.py
@@ -310,7 +310,7 @@ def _create_xml_node(tag, prefix=None, ns=None):
     return ET.Element(tag)
 
 
-class Model(object):
+class Model:
     """Mixin for all client request body/response body models to support
     serialization and deserialization.
     """
@@ -563,7 +563,7 @@ def _decode_attribute_map_key(key):
     return key.replace("\\.", ".")
 
 
-class Serializer(object):  # pylint: disable=too-many-public-methods
+class Serializer:  # pylint: disable=too-many-public-methods
     """Request object model serializer."""
 
     basic_types = {str: "str", int: "int", bool: "bool", float: "float"}
@@ -1441,7 +1441,7 @@ def xml_key_extractor(attr, attr_desc, data):  # pylint: disable=unused-argument
     return children[0]
 
 
-class Deserializer(object):
+class Deserializer:
     """Response object model deserializer.
 
     :param dict classes: Class type dictionary for deserializing complex types.

From c06dffdfc8e80ed13d737837dec32304620767ea Mon Sep 17 00:00:00 2001
From: iscai-msft <isabellavcai@gmail.com>
Date: Tue, 3 Dec 2024 11:50:21 -0500
Subject: [PATCH 3/5] add changeset

---
 .../useless_object_inheritance-2024-11-3-11-50-16.md      | 8 ++++++++
 1 file changed, 8 insertions(+)
 create mode 100644 .chronus/changes/useless_object_inheritance-2024-11-3-11-50-16.md

diff --git a/.chronus/changes/useless_object_inheritance-2024-11-3-11-50-16.md b/.chronus/changes/useless_object_inheritance-2024-11-3-11-50-16.md
new file mode 100644
index 00000000000..7ca267a8957
--- /dev/null
+++ b/.chronus/changes/useless_object_inheritance-2024-11-3-11-50-16.md
@@ -0,0 +1,8 @@
+---
+changeKind: fix
+packages:
+  - "@autorest/python"
+  - "@azure-tools/typespec-python"
+---
+
+Fix pylint `useless-object-inheritance` in generated code
\ No newline at end of file

From 666b24a48622142b35707e1b31ab7c0c52a4f14e Mon Sep 17 00:00:00 2001
From: iscai-msft <isabellavcai@gmail.com>
Date: Tue, 3 Dec 2024 12:42:56 -0500
Subject: [PATCH 4/5] black samples

---
 .../azure/multiapi/sample/__init__.py         |  4 +-
 .../azure/multiapi/sample/_configuration.py   | 38 ++++----
 .../sample/_multiapi_service_client.py        | 90 +++++++++++--------
 .../multiapi/sample/_operations_mixin.py      | 44 ++++-----
 .../azure/multiapi/sample/aio/__init__.py     |  3 +-
 .../multiapi/sample/aio/_configuration.py     | 38 ++++----
 .../sample/aio/_multiapi_service_client.py    | 86 +++++++++++-------
 .../multiapi/sample/aio/_operations_mixin.py  | 46 ++++------
 8 files changed, 183 insertions(+), 166 deletions(-)

diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py
index b54d40dbd2f..09a500e6f5c 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/__init__.py
@@ -7,10 +7,12 @@
 # --------------------------------------------------------------------------
 
 from ._multiapi_service_client import MultiapiServiceClient
-__all__ = ['MultiapiServiceClient']
+
+__all__ = ["MultiapiServiceClient"]
 
 try:
     from ._patch import patch_sdk  # type: ignore
+
     patch_sdk()
 except ImportError:
     pass
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py
index 01c1c4907c2..88bc35f69e9 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_configuration.py
@@ -19,6 +19,7 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials import TokenCredential
 
+
 class MultiapiServiceClientConfiguration:
     """Configuration for MultiapiServiceClient.
 
@@ -29,32 +30,27 @@ class MultiapiServiceClientConfiguration:
     :type credential: ~azure.core.credentials.TokenCredential
     """
 
-    def __init__(
-        self,
-        credential: "TokenCredential",
-        **kwargs: Any
-    ):
+    def __init__(self, credential: "TokenCredential", **kwargs: Any):
         if credential is None:
             raise ValueError("Parameter 'credential' must not be None.")
 
         self.credential = credential
-        self.credential_scopes = kwargs.pop('credential_scopes', ['https://management.azure.com/.default'])
-        kwargs.setdefault('sdk_moniker', 'azure-multiapi-sample/{}'.format(VERSION))
+        self.credential_scopes = kwargs.pop("credential_scopes", ["https://management.azure.com/.default"])
+        kwargs.setdefault("sdk_moniker", "azure-multiapi-sample/{}".format(VERSION))
         self.polling_interval = kwargs.get("polling_interval", 30)
         self._configure(**kwargs)
 
-    def _configure(
-        self,
-        **kwargs: Any
-    ):
-        self.user_agent_policy = kwargs.get('user_agent_policy') or policies.UserAgentPolicy(**kwargs)
-        self.headers_policy = kwargs.get('headers_policy') or policies.HeadersPolicy(**kwargs)
-        self.proxy_policy = kwargs.get('proxy_policy') or policies.ProxyPolicy(**kwargs)
-        self.logging_policy = kwargs.get('logging_policy') or policies.NetworkTraceLoggingPolicy(**kwargs)
-        self.http_logging_policy = kwargs.get('http_logging_policy') or ARMHttpLoggingPolicy(**kwargs)
-        self.retry_policy = kwargs.get('retry_policy') or policies.RetryPolicy(**kwargs)
-        self.custom_hook_policy = kwargs.get('custom_hook_policy') or policies.CustomHookPolicy(**kwargs)
-        self.redirect_policy = kwargs.get('redirect_policy') or policies.RedirectPolicy(**kwargs)
-        self.authentication_policy = kwargs.get('authentication_policy')
+    def _configure(self, **kwargs: Any):
+        self.user_agent_policy = kwargs.get("user_agent_policy") or policies.UserAgentPolicy(**kwargs)
+        self.headers_policy = kwargs.get("headers_policy") or policies.HeadersPolicy(**kwargs)
+        self.proxy_policy = kwargs.get("proxy_policy") or policies.ProxyPolicy(**kwargs)
+        self.logging_policy = kwargs.get("logging_policy") or policies.NetworkTraceLoggingPolicy(**kwargs)
+        self.http_logging_policy = kwargs.get("http_logging_policy") or ARMHttpLoggingPolicy(**kwargs)
+        self.retry_policy = kwargs.get("retry_policy") or policies.RetryPolicy(**kwargs)
+        self.custom_hook_policy = kwargs.get("custom_hook_policy") or policies.CustomHookPolicy(**kwargs)
+        self.redirect_policy = kwargs.get("redirect_policy") or policies.RedirectPolicy(**kwargs)
+        self.authentication_policy = kwargs.get("authentication_policy")
         if self.credential and not self.authentication_policy:
-            self.authentication_policy = ARMChallengeAuthenticationPolicy(self.credential, *self.credential_scopes, **kwargs)
+            self.authentication_policy = ARMChallengeAuthenticationPolicy(
+                self.credential, *self.credential_scopes, **kwargs
+            )
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py
index 4481c472404..fdfa2e313cf 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_multiapi_service_client.py
@@ -26,6 +26,7 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials import TokenCredential
 
+
 class _SDKClient(object):
     def __init__(self, *args, **kwargs):
         """This is a fake class to support current implemetation of MultiApiClientMixin."
@@ -33,6 +34,7 @@ def __init__(self, *args, **kwargs):
         """
         pass
 
+
 class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClientMixin, _SDKClient):
     """Service client for multiapi client testing.
 
@@ -55,28 +57,30 @@ class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClient
     :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
     """
 
-    DEFAULT_API_VERSION = '3.0.0'
+    DEFAULT_API_VERSION = "3.0.0"
     _PROFILE_TAG = "azure.multiapi.sample.MultiapiServiceClient"
-    LATEST_PROFILE = ProfileDefinition({
-        _PROFILE_TAG: {
-            None: DEFAULT_API_VERSION,
-            'begin_test_lro': '1.0.0',
-            'begin_test_lro_and_paging': '1.0.0',
-            'test_one': '2.0.0',
-        }},
-        _PROFILE_TAG + " latest"
+    LATEST_PROFILE = ProfileDefinition(
+        {
+            _PROFILE_TAG: {
+                None: DEFAULT_API_VERSION,
+                "begin_test_lro": "1.0.0",
+                "begin_test_lro_and_paging": "1.0.0",
+                "test_one": "2.0.0",
+            }
+        },
+        _PROFILE_TAG + " latest",
     )
 
     def __init__(
         self,
         credential: "TokenCredential",
-        api_version: Optional[str]=None,
+        api_version: Optional[str] = None,
         base_url: str = "http://localhost:3000",
-        profile: KnownProfiles=KnownProfiles.default,
+        profile: KnownProfiles = KnownProfiles.default,
         **kwargs: Any
     ):
         if api_version:
-            kwargs.setdefault('api_version', api_version)
+            kwargs.setdefault("api_version", api_version)
         self._config = MultiapiServiceClientConfiguration(credential, **kwargs)
         _policies = kwargs.pop("policies", None)
         if _policies is None:
@@ -97,10 +101,7 @@ def __init__(
                 self._config.http_logging_policy,
             ]
         self._client = ARMPipelineClient(base_url=base_url, policies=_policies, **kwargs)
-        super(MultiapiServiceClient, self).__init__(
-            api_version=api_version,
-            profile=profile
-        )
+        super(MultiapiServiceClient, self).__init__(api_version=api_version, profile=profile)
 
     @classmethod
     def _models_dict(cls, api_version):
@@ -110,18 +111,21 @@ def _models_dict(cls, api_version):
     def models(cls, api_version=DEFAULT_API_VERSION):
         """Module depends on the API version:
 
-           * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
-           * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
-           * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
+        * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
+        * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
+        * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
         """
-        if api_version == '1.0.0':
+        if api_version == "1.0.0":
             from .v1 import models
+
             return models
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from .v2 import models
+
             return models
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from .v3 import models
+
             return models
         raise ValueError("API version {} is not available".format(api_version))
 
@@ -129,43 +133,57 @@ def models(cls, api_version=DEFAULT_API_VERSION):
     def operation_group_one(self):
         """Instance depends on the API version:
 
-           * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.operations.OperationGroupOneOperations>`
-           * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.operations.OperationGroupOneOperations>`
-           * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.operations.OperationGroupOneOperations>`
+        * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.operations.OperationGroupOneOperations>`
+        * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.operations.OperationGroupOneOperations>`
+        * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.operations.OperationGroupOneOperations>`
         """
-        api_version = self._get_api_version('operation_group_one')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("operation_group_one")
+        if api_version == "1.0.0":
             from .v1.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from .v2.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from .v3.operations import OperationGroupOneOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_one'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
+        return OperationClass(
+            self._client,
+            self._config,
+            Serializer(self._models_dict(api_version)),
+            Deserializer(self._models_dict(api_version)),
+            api_version,
+        )
 
     @property
     def operation_group_two(self):
         """Instance depends on the API version:
 
-           * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.operations.OperationGroupTwoOperations>`
-           * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.operations.OperationGroupTwoOperations>`
+        * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.operations.OperationGroupTwoOperations>`
+        * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.operations.OperationGroupTwoOperations>`
         """
-        api_version = self._get_api_version('operation_group_two')
-        if api_version == '2.0.0':
+        api_version = self._get_api_version("operation_group_two")
+        if api_version == "2.0.0":
             from .v2.operations import OperationGroupTwoOperations as OperationClass
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from .v3.operations import OperationGroupTwoOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_two'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
+        return OperationClass(
+            self._client,
+            self._config,
+            Serializer(self._models_dict(api_version)),
+            Deserializer(self._models_dict(api_version)),
+            api_version,
+        )
 
     def close(self):
         self._client.close()
+
     def __enter__(self):
         self._client.__enter__()
         return self
+
     def __exit__(self, *exc_details):
         self._client.__exit__(*exc_details)
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py
index d55b41d3a3b..5af54a9ee1d 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/_operations_mixin.py
@@ -21,9 +21,7 @@
 class MultiapiServiceClientOperationsMixin(object):
 
     def begin_test_lro(
-        self,
-        product: Optional[Union[_models.Product, IO[bytes]]] = None,
-        **kwargs: Any
+        self, product: Optional[Union[_models.Product, IO[bytes]]] = None, **kwargs: Any
     ) -> LROPoller[_models.Product]:
         """Put in whatever shape of Product you want, will return a Product with id equal to 100.
 
@@ -34,8 +32,8 @@ def begin_test_lro(
         :rtype: ~azure.core.polling.LROPoller[~azure.multiapi.sample.v1.models.Product]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('begin_test_lro')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("begin_test_lro")
+        if api_version == "1.0.0":
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro'".format(api_version))
@@ -66,8 +64,8 @@ def begin_test_lro_and_paging(
          ~azure.core.polling.LROPoller[~azure.core.paging.ItemPaged[~azure.multiapi.sample.v1.models.Product]]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('begin_test_lro_and_paging')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("begin_test_lro_and_paging")
+        if api_version == "1.0.0":
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro_and_paging'".format(api_version))
@@ -99,12 +97,12 @@ def test_different_calls(  # pylint: disable=inconsistent-return-statements
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('test_different_calls')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("test_different_calls")
+        if api_version == "1.0.0":
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from .v2.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from .v3.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_different_calls'".format(api_version))
@@ -115,13 +113,12 @@ def test_different_calls(  # pylint: disable=inconsistent-return-statements
         mixin_instance._serialize = Serializer(self._models_dict(api_version))
         mixin_instance._serialize.client_side_validation = False
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
-        return mixin_instance.test_different_calls(greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs)
+        return mixin_instance.test_different_calls(
+            greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs
+        )
 
     def test_one(  # pylint: disable=inconsistent-return-statements
-        self,
-        id: int,
-        message: Optional[str] = None,
-        **kwargs: Any
+        self, id: int, message: Optional[str] = None, **kwargs: Any
     ) -> None:
         """TestOne should be in an FirstVersionOperationsMixin.
 
@@ -133,10 +130,10 @@ def test_one(  # pylint: disable=inconsistent-return-statements
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('test_one')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("test_one")
+        if api_version == "1.0.0":
             from .v1.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from .v2.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_one'".format(api_version))
@@ -149,18 +146,15 @@ def test_one(  # pylint: disable=inconsistent-return-statements
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
         return mixin_instance.test_one(id, message, **kwargs)
 
-    def test_paging(
-        self,
-        **kwargs: Any
-    ) -> Iterable["_models.ModelThree"]:
+    def test_paging(self, **kwargs: Any) -> Iterable["_models.ModelThree"]:
         """Returns ModelThree with optionalProperty 'paged'.
 
         :return: An iterator like instance of either ModelThree or the result of cls(response)
         :rtype: ~azure.core.paging.ItemPaged[~azure.multiapi.sample.v3.models.ModelThree]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('test_paging')
-        if api_version == '3.0.0':
+        api_version = self._get_api_version("test_paging")
+        if api_version == "3.0.0":
             from .v3.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_paging'".format(api_version))
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py
index c5088f7a288..5dc86527950 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/__init__.py
@@ -7,4 +7,5 @@
 # --------------------------------------------------------------------------
 
 from ._multiapi_service_client import MultiapiServiceClient
-__all__ = ['MultiapiServiceClient']
+
+__all__ = ["MultiapiServiceClient"]
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py
index 09ba5dda158..ce9df4f2a2b 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_configuration.py
@@ -19,6 +19,7 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials_async import AsyncTokenCredential
 
+
 class MultiapiServiceClientConfiguration:
     """Configuration for MultiapiServiceClient.
 
@@ -29,32 +30,27 @@ class MultiapiServiceClientConfiguration:
     :type credential: ~azure.core.credentials_async.AsyncTokenCredential
     """
 
-    def __init__(
-        self,
-        credential: "AsyncTokenCredential",
-        **kwargs: Any
-    ) -> None:
+    def __init__(self, credential: "AsyncTokenCredential", **kwargs: Any) -> None:
         if credential is None:
             raise ValueError("Parameter 'credential' must not be None.")
 
         self.credential = credential
-        self.credential_scopes = kwargs.pop('credential_scopes', ['https://management.azure.com/.default'])
-        kwargs.setdefault('sdk_moniker', 'azure-multiapi-sample/{}'.format(VERSION))
+        self.credential_scopes = kwargs.pop("credential_scopes", ["https://management.azure.com/.default"])
+        kwargs.setdefault("sdk_moniker", "azure-multiapi-sample/{}".format(VERSION))
         self.polling_interval = kwargs.get("polling_interval", 30)
         self._configure(**kwargs)
 
-    def _configure(
-        self,
-        **kwargs: Any
-    ) -> None:
-        self.user_agent_policy = kwargs.get('user_agent_policy') or policies.UserAgentPolicy(**kwargs)
-        self.headers_policy = kwargs.get('headers_policy') or policies.HeadersPolicy(**kwargs)
-        self.proxy_policy = kwargs.get('proxy_policy') or policies.ProxyPolicy(**kwargs)
-        self.logging_policy = kwargs.get('logging_policy') or policies.NetworkTraceLoggingPolicy(**kwargs)
-        self.http_logging_policy = kwargs.get('http_logging_policy') or ARMHttpLoggingPolicy(**kwargs)
-        self.retry_policy = kwargs.get('retry_policy') or policies.AsyncRetryPolicy(**kwargs)
-        self.custom_hook_policy = kwargs.get('custom_hook_policy') or policies.CustomHookPolicy(**kwargs)
-        self.redirect_policy = kwargs.get('redirect_policy') or policies.AsyncRedirectPolicy(**kwargs)
-        self.authentication_policy = kwargs.get('authentication_policy')
+    def _configure(self, **kwargs: Any) -> None:
+        self.user_agent_policy = kwargs.get("user_agent_policy") or policies.UserAgentPolicy(**kwargs)
+        self.headers_policy = kwargs.get("headers_policy") or policies.HeadersPolicy(**kwargs)
+        self.proxy_policy = kwargs.get("proxy_policy") or policies.ProxyPolicy(**kwargs)
+        self.logging_policy = kwargs.get("logging_policy") or policies.NetworkTraceLoggingPolicy(**kwargs)
+        self.http_logging_policy = kwargs.get("http_logging_policy") or ARMHttpLoggingPolicy(**kwargs)
+        self.retry_policy = kwargs.get("retry_policy") or policies.AsyncRetryPolicy(**kwargs)
+        self.custom_hook_policy = kwargs.get("custom_hook_policy") or policies.CustomHookPolicy(**kwargs)
+        self.redirect_policy = kwargs.get("redirect_policy") or policies.AsyncRedirectPolicy(**kwargs)
+        self.authentication_policy = kwargs.get("authentication_policy")
         if self.credential and not self.authentication_policy:
-            self.authentication_policy = AsyncARMChallengeAuthenticationPolicy(self.credential, *self.credential_scopes, **kwargs)
+            self.authentication_policy = AsyncARMChallengeAuthenticationPolicy(
+                self.credential, *self.credential_scopes, **kwargs
+            )
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py
index f23620521ee..70ad5c49b8e 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_multiapi_service_client.py
@@ -26,6 +26,7 @@
     # pylint: disable=unused-import,ungrouped-imports
     from azure.core.credentials_async import AsyncTokenCredential
 
+
 class _SDKClient(object):
     def __init__(self, *args, **kwargs):
         """This is a fake class to support current implemetation of MultiApiClientMixin."
@@ -33,6 +34,7 @@ def __init__(self, *args, **kwargs):
         """
         pass
 
+
 class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClientMixin, _SDKClient):
     """Service client for multiapi client testing.
 
@@ -55,16 +57,18 @@ class MultiapiServiceClient(MultiapiServiceClientOperationsMixin, MultiApiClient
     :keyword int polling_interval: Default waiting time between two polls for LRO operations if no Retry-After header is present.
     """
 
-    DEFAULT_API_VERSION = '3.0.0'
+    DEFAULT_API_VERSION = "3.0.0"
     _PROFILE_TAG = "azure.multiapi.sample.MultiapiServiceClient"
-    LATEST_PROFILE = ProfileDefinition({
-        _PROFILE_TAG: {
-            None: DEFAULT_API_VERSION,
-            'begin_test_lro': '1.0.0',
-            'begin_test_lro_and_paging': '1.0.0',
-            'test_one': '2.0.0',
-        }},
-        _PROFILE_TAG + " latest"
+    LATEST_PROFILE = ProfileDefinition(
+        {
+            _PROFILE_TAG: {
+                None: DEFAULT_API_VERSION,
+                "begin_test_lro": "1.0.0",
+                "begin_test_lro_and_paging": "1.0.0",
+                "test_one": "2.0.0",
+            }
+        },
+        _PROFILE_TAG + " latest",
     )
 
     def __init__(
@@ -76,7 +80,7 @@ def __init__(
         **kwargs: Any
     ) -> None:
         if api_version:
-            kwargs.setdefault('api_version', api_version)
+            kwargs.setdefault("api_version", api_version)
         self._config = MultiapiServiceClientConfiguration(credential, **kwargs)
         _policies = kwargs.pop("policies", None)
         if _policies is None:
@@ -97,10 +101,7 @@ def __init__(
                 self._config.http_logging_policy,
             ]
         self._client = AsyncARMPipelineClient(base_url=base_url, policies=_policies, **kwargs)
-        super(MultiapiServiceClient, self).__init__(
-            api_version=api_version,
-            profile=profile
-        )
+        super(MultiapiServiceClient, self).__init__(api_version=api_version, profile=profile)
 
     @classmethod
     def _models_dict(cls, api_version):
@@ -110,18 +111,21 @@ def _models_dict(cls, api_version):
     def models(cls, api_version=DEFAULT_API_VERSION):
         """Module depends on the API version:
 
-           * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
-           * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
-           * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
+        * 1.0.0: :mod:`v1.models<azure.multiapi.sample.v1.models>`
+        * 2.0.0: :mod:`v2.models<azure.multiapi.sample.v2.models>`
+        * 3.0.0: :mod:`v3.models<azure.multiapi.sample.v3.models>`
         """
-        if api_version == '1.0.0':
+        if api_version == "1.0.0":
             from ..v1 import models
+
             return models
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from ..v2 import models
+
             return models
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from ..v3 import models
+
             return models
         raise ValueError("API version {} is not available".format(api_version))
 
@@ -129,43 +133,57 @@ def models(cls, api_version=DEFAULT_API_VERSION):
     def operation_group_one(self):
         """Instance depends on the API version:
 
-           * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.aio.operations.OperationGroupOneOperations>`
-           * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupOneOperations>`
-           * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupOneOperations>`
+        * 1.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v1.aio.operations.OperationGroupOneOperations>`
+        * 2.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupOneOperations>`
+        * 3.0.0: :class:`OperationGroupOneOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupOneOperations>`
         """
-        api_version = self._get_api_version('operation_group_one')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("operation_group_one")
+        if api_version == "1.0.0":
             from ..v1.aio.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from ..v2.aio.operations import OperationGroupOneOperations as OperationClass
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from ..v3.aio.operations import OperationGroupOneOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_one'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
+        return OperationClass(
+            self._client,
+            self._config,
+            Serializer(self._models_dict(api_version)),
+            Deserializer(self._models_dict(api_version)),
+            api_version,
+        )
 
     @property
     def operation_group_two(self):
         """Instance depends on the API version:
 
-           * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupTwoOperations>`
-           * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupTwoOperations>`
+        * 2.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v2.aio.operations.OperationGroupTwoOperations>`
+        * 3.0.0: :class:`OperationGroupTwoOperations<azure.multiapi.sample.v3.aio.operations.OperationGroupTwoOperations>`
         """
-        api_version = self._get_api_version('operation_group_two')
-        if api_version == '2.0.0':
+        api_version = self._get_api_version("operation_group_two")
+        if api_version == "2.0.0":
             from ..v2.aio.operations import OperationGroupTwoOperations as OperationClass
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from ..v3.aio.operations import OperationGroupTwoOperations as OperationClass
         else:
             raise ValueError("API version {} does not have operation group 'operation_group_two'".format(api_version))
         self._config.api_version = api_version
-        return OperationClass(self._client, self._config, Serializer(self._models_dict(api_version)), Deserializer(self._models_dict(api_version)), api_version)
+        return OperationClass(
+            self._client,
+            self._config,
+            Serializer(self._models_dict(api_version)),
+            Deserializer(self._models_dict(api_version)),
+            api_version,
+        )
 
     async def close(self):
         await self._client.close()
+
     async def __aenter__(self):
         await self._client.__aenter__()
         return self
+
     async def __aexit__(self, *exc_details):
         await self._client.__aexit__(*exc_details)
diff --git a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py
index 67569987f5a..41ce5c16130 100644
--- a/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py
+++ b/packages/autorest.python/samples/specification/multiapi/generated/azure/multiapi/sample/aio/_operations_mixin.py
@@ -21,9 +21,7 @@
 class MultiapiServiceClientOperationsMixin(object):
 
     async def begin_test_lro(
-        self,
-        product: Optional[Union[_models.Product, IO[bytes]]] = None,
-        **kwargs: Any
+        self, product: Optional[Union[_models.Product, IO[bytes]]] = None, **kwargs: Any
     ) -> AsyncLROPoller[_models.Product]:
         """Put in whatever shape of Product you want, will return a Product with id equal to 100.
 
@@ -35,8 +33,8 @@ async def begin_test_lro(
         :rtype: ~azure.core.polling.AsyncLROPoller[~azure.multiapi.sample.v1.models.Product]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('begin_test_lro')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("begin_test_lro")
+        if api_version == "1.0.0":
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro'".format(api_version))
@@ -68,8 +66,8 @@ async def begin_test_lro_and_paging(
          ~azure.core.polling.AsyncLROPoller[~azure.core.async_paging.AsyncItemPaged[~azure.multiapi.sample.v1.models.Product]]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('begin_test_lro_and_paging')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("begin_test_lro_and_paging")
+        if api_version == "1.0.0":
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'begin_test_lro_and_paging'".format(api_version))
@@ -101,12 +99,12 @@ async def test_different_calls(
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('test_different_calls')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("test_different_calls")
+        if api_version == "1.0.0":
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from ..v2.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == '3.0.0':
+        elif api_version == "3.0.0":
             from ..v3.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_different_calls'".format(api_version))
@@ -117,14 +115,11 @@ async def test_different_calls(
         mixin_instance._serialize = Serializer(self._models_dict(api_version))
         mixin_instance._serialize.client_side_validation = False
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
-        return await mixin_instance.test_different_calls(greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs)
+        return await mixin_instance.test_different_calls(
+            greeting_in_english, greeting_in_chinese, greeting_in_french, **kwargs
+        )
 
-    async def test_one(
-        self,
-        id: int,
-        message: Optional[str] = None,
-        **kwargs: Any
-    ) -> None:
+    async def test_one(self, id: int, message: Optional[str] = None, **kwargs: Any) -> None:
         """TestOne should be in an FirstVersionOperationsMixin.
 
         :param id: An int parameter. Required.
@@ -135,10 +130,10 @@ async def test_one(
         :rtype: None
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('test_one')
-        if api_version == '1.0.0':
+        api_version = self._get_api_version("test_one")
+        if api_version == "1.0.0":
             from ..v1.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
-        elif api_version == '2.0.0':
+        elif api_version == "2.0.0":
             from ..v2.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_one'".format(api_version))
@@ -151,18 +146,15 @@ async def test_one(
         mixin_instance._deserialize = Deserializer(self._models_dict(api_version))
         return await mixin_instance.test_one(id, message, **kwargs)
 
-    def test_paging(
-        self,
-        **kwargs: Any
-    ) -> AsyncIterable["_models.ModelThree"]:
+    def test_paging(self, **kwargs: Any) -> AsyncIterable["_models.ModelThree"]:
         """Returns ModelThree with optionalProperty 'paged'.
 
         :return: An iterator like instance of either ModelThree or the result of cls(response)
         :rtype: ~azure.core.async_paging.AsyncItemPaged[~azure.multiapi.sample.v3.models.ModelThree]
         :raises ~azure.core.exceptions.HttpResponseError:
         """
-        api_version = self._get_api_version('test_paging')
-        if api_version == '3.0.0':
+        api_version = self._get_api_version("test_paging")
+        if api_version == "3.0.0":
             from ..v3.aio.operations import MultiapiServiceClientOperationsMixin as OperationClass
         else:
             raise ValueError("API version {} does not have operation 'test_paging'".format(api_version))

From 73e0db7da5b3a2b55f79dbace5e9f9d31e03350b Mon Sep 17 00:00:00 2001
From: iscai-msft <isabellavcai@gmail.com>
Date: Wed, 4 Dec 2024 13:41:57 -0500
Subject: [PATCH 5/5] bump http-client-python version

---
 packages/autorest.python/package.json |  2 +-
 packages/typespec-python/package.json |  2 +-
 pnpm-lock.yaml                        | 14 +++++++-------
 3 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/packages/autorest.python/package.json b/packages/autorest.python/package.json
index 567a03fb280..0ab3b8fcdea 100644
--- a/packages/autorest.python/package.json
+++ b/packages/autorest.python/package.json
@@ -29,7 +29,7 @@
   },
   "homepage": "https://github.com/Azure/autorest.python/blob/main/README.md",
   "dependencies": {
-    "@typespec/http-client-python": "~0.3.11",
+    "@typespec/http-client-python": "~0.3.12",
     "@autorest/system-requirements": "~1.0.2",
     "fs-extra": "~11.2.0",
     "tsx": "~4.19.1"
diff --git a/packages/typespec-python/package.json b/packages/typespec-python/package.json
index 01bbd065c10..f2987c401ab 100644
--- a/packages/typespec-python/package.json
+++ b/packages/typespec-python/package.json
@@ -60,7 +60,7 @@
     "js-yaml": "~4.1.0",
     "semver": "~7.6.2",
     "tsx": "~4.19.1",
-    "@typespec/http-client-python": "~0.3.11",
+    "@typespec/http-client-python": "~0.3.12",
     "fs-extra": "~11.2.0"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 3e2ead08a78..77ea4fde1aa 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -54,8 +54,8 @@ importers:
         specifier: ~1.0.2
         version: 1.0.2
       '@typespec/http-client-python':
-        specifier: ~0.3.11
-        version: 0.3.11(adr36ipppdbqiaonm57cbaqjli)
+        specifier: ~0.3.12
+        version: 0.3.12(adr36ipppdbqiaonm57cbaqjli)
       fs-extra:
         specifier: ~11.2.0
         version: 11.2.0
@@ -76,8 +76,8 @@ importers:
   packages/typespec-python:
     dependencies:
       '@typespec/http-client-python':
-        specifier: ~0.3.11
-        version: 0.3.11(adr36ipppdbqiaonm57cbaqjli)
+        specifier: ~0.3.12
+        version: 0.3.12(adr36ipppdbqiaonm57cbaqjli)
       fs-extra:
         specifier: ~11.2.0
         version: 11.2.0
@@ -1233,8 +1233,8 @@ packages:
     engines: {node: '>=18.0.0'}
     hasBin: true
 
-  '@typespec/http-client-python@0.3.11':
-    resolution: {integrity: sha512-cgLX8oAkEjnc07CagYLRiMp7Jrd8SEtsS2/EUEctyZw2HgggXc+YM4MC+ATepJLbfGVjvGX2Whm6DlRvYymaxg==}
+  '@typespec/http-client-python@0.3.12':
+    resolution: {integrity: sha512-S4BvoANekP4RgT9Uqpj+K2DmrW3ceUqJ4qqZwolipJBGbjHQMYrbMT8oLTkaSlCGb0dFphibnfLu7AVqkmZ8vQ==}
     engines: {node: '>=18.0.0'}
     peerDependencies:
       '@azure-tools/typespec-autorest': '>=0.48.0 <1.0.0'
@@ -4918,7 +4918,7 @@ snapshots:
       yaml: 2.5.1
       yargs: 17.7.2
 
-  '@typespec/http-client-python@0.3.11(adr36ipppdbqiaonm57cbaqjli)':
+  '@typespec/http-client-python@0.3.12(adr36ipppdbqiaonm57cbaqjli)':
     dependencies:
       '@azure-tools/typespec-autorest': 0.48.0(eltkenvcfknbgsjpk2r2c3erra)
       '@azure-tools/typespec-azure-core': 0.48.0(@typespec/compiler@0.62.0)(@typespec/http@0.62.0(@typespec/compiler@0.62.0))(@typespec/rest@0.62.0(@typespec/compiler@0.62.0)(@typespec/http@0.62.0(@typespec/compiler@0.62.0)))