diff --git a/.gitignore b/.gitignore
index 3b0a778..eebfa94 100644
--- a/.gitignore
+++ b/.gitignore
@@ -112,7 +112,7 @@ venv/
 ENV/
 env.bak/
 venv.bak/
-
+reto07/
 # Spyder project settings
 .spyderproject
 .spyproject
diff --git a/challenge.py b/challenge.py
index 93a85f8..f7faea6 100644
--- a/challenge.py
+++ b/challenge.py
@@ -74,22 +74,23 @@
 
 def run():
 
-    all_python_devs =  # Using filter, generate a list with all the python devs
-    all_Platzi_workers =  # Using filter, generate a list with all the Platzi workers
-    adults =  # Using filter, generate a list with all people over 18 years old
-    workers =  # Using map, generate a new list of people with a key 'homeless' with True or False values, if 'organization' have something or not
-    old_people =  # Using map, generate a new list of people with a key 'old' with True or False values, if 'age' is greater than 30 or not
+    all_python_devs = filter(lambda x : x['language'] == 'python', DATA)
+    all_Platzi_workers = filter(lambda x : x['organization'] == 'Platzi', DATA)
+    adults = filter(lambda x : x['age'] > 18, DATA)
+    workers = list(map(lambda x: dict(x, **{'Homeless':True}) if x['organization'] == '' else dict(x, **{'Homeless':False}), DATA))
+    old_people = list(map(lambda x: dict(x, **{'old':True}) if x['age'] > 30  else dict(x, **{'Old':False}), DATA))
 
     print('Python devs: ')
+    
     for dev in all_python_devs:
         print(dev['name'])
     print('\n\n')
-
+ 
     print('Platzi workers: ')
     for worker in all_Platzi_workers:
         print(worker['name'])
     print('\n\n')
-
+    
     print('Adults: ')
     for adult in adults:
         print(adult['name'])
@@ -97,12 +98,11 @@ def run():
 
     print(workers)
     print('\n\n')
-
+    
+    
     print(old_people)
     print('\n\n')
 
-    # Remember: when possible, use lambdas
-
 
 if __name__ == '__main__':
     run()
diff --git a/lambdas.py b/lambdas.py
index e931967..807e64f 100644
--- a/lambdas.py
+++ b/lambdas.py
@@ -1,3 +1,4 @@
+
 import requests
 import json