Codespace miniature broccoli jj5r7vggvjprh574p

Start/Ch2/conditionals_start.py

@@ -5,5 +5,12 @@
 x, y = 10, 100
 
 # conditional flow uses if, elif, else
-
+if x < y :
+  print("x is less than y")
+elif x > y:
+ print("x is greater than y")
+else:
+  print("x is equal to y")
 # conditional statements let you use "a if C else b"
+result = "x is less than y" if (x < y) else "x is greater or equal to y"
+print(result)

Start/Ch2/dict_start.py

@@ -3,21 +3,30 @@
 
 
 # Dictionary: a key-value data structure
-
-
+mydict = {
+  "one" : 1,
+  "two" : 2,
+  3 : "three",
+  4.5 : ["four" , "point" , "five"]
+}
+print(mydict)
 # dictionaries are accessed via keys
-
-
+# print(mydict["one"])
+# print(mydict[3])
 # you can also set dictionary data by creating a new key
-
+# mydict["seven"] = 7
+# print(mydict)
 
 # Trying to access a nonexistent key will produce an error
-
-
+#print(mydict["b"])
+# print("two" in mydict)
+# print("b" in mydict)
 # To avoid this, you can use the "in" operator to see if a key exists
 
-
 # You can retrieve all of the keys and values from a dictionary
-
+print(mydict.keys())
+print(mydict.values())
 
 # You can also iterate over all the items in a dictionary
+for key, val in mydict.items():
+  print(key, val)

Start/Ch2/functions_start.py

@@ -3,17 +3,38 @@
 
 
 # define a basic function
-print("hello world!")
-name = input("What is your name? ")
-print("Nice to meet you,", name)
-
+# def hello_func():
+#   print("hello world!")
+#   name = input("What is your name? ")
+#   print("Nice to meet you,", name)
+# hello_func()
 # function that takes parameters
-
-
+# def hello_func(greeting):
+#   print("hello world!")
+#   name = input("What is your name? ")
+#   print(greeting, name)
+# hello_func("how are you doing")
+# hello_func("what's up")
 # function that returns a value
-
-
+# def cube(x):
+#   return x*x*x
+# result = cube(3)
+# print(result)
 # function with default value for an parameter
-
-
-# function with variable number of parameters
+# def hello_func(greeting, name=None):
+#    print("hello world!")
+#    if name == None:
+#     name = input("What is your name? ")
+#    print(greeting, name)
+
+# hello_func("how are you doing")
+# hello_func(name="nani" , greeting="nice to meet you")
+
+# function with variable nnumber of parameters
+def multi_add(start, *args):
+  result = start
+  for x in args:
+    result = result + x
+  return result
+
+print(multi_add(10,4,5,10,4,10))

Start/Ch2/helloworld_start.py

@@ -1,2 +1,5 @@
 # LinkedIn Learning Python course by Joe Marini
 # Example file for HelloWorld
+print("hello world")
+name = input("what is your name? ")
+print("nice to meet you ", name)

Start/Ch2/loops_start.py

@@ -5,15 +5,30 @@
 x = 0
 
 # define a while loop
-
+# while x < 5:
+#   print(x)
+#   x = x + 1
+#answer = input("should i stop?")
+# while answer != "yes":
+#   print(answer)
+#   answer = input("should I stop?")
 
 # define a for loop
-
-
+# days = ["mon", "tue", "wed", "thu", "fri","sat","sun"]
+# for d in days:
+#   print(d)
 # use a for loop over a collection
 
 
 # use the break and continue statements
-
+days = ["mon", "tue", "wed", "thu", "fri","sat","sun"]
+for d in days:
+  if (d == "thu"):
+    #break
+    continue
+  print(d)
 
 # using the enumerate() function to get an index and an item
+days = ["mon", "tue", "wed", "thu", "fri","sat","sun"]
+for i,d in enumerate(days):
+   print(i,d)

Start/Ch2/sequence_start.py

@@ -3,26 +3,36 @@
 
 # Sequences: Lists and Tuples
 # These are -- surprise -- sequences of values
-
+mylist = [0,1,"two",3.2,False]
+print(len(mylist))
 
 # to access a member of a sequence type, use []
-
-
+# print(mylist[2])
+# print(mylist[-1])
+# mylist[0] = 10
+# print(mylist)
 # add a list to another list
-
-
-# use slices to get parts of a sequence
-
-
+# another_list = [6,7,8]
+# mylist = mylist + another_list
+# print(mylist)
+# # use slices to get parts of a sequence
+# mystr = "this is a string"
+# print(mystr[2])
 # you can use slices to reverse a sequence
-
+# print("my slice", mylist[1:4])
+# print("my slice", mylist[:4:2])
+# print("my slice", mylist[::-1])
 
 # Tuples are like lists, but they are immutable
-
-
+mytuple = (0,1,3,"three")
+# print("my tuple", mytuple[::-1])
 # Sets are also sequences, but they contain unique values
-
+myset = {1,2,3,3,4,"hey"}
+print(myset)
 # Set, however, can not be indexed like lists or tuples
-# print(myset[0]) # this will cause an error
+#print(myset[0]) # this will cause an error
 
 # Test for membership
+print(1 in mylist)
+print(3 in mytuple)
+print(5 in myset)

Start/Ch2/variables_start.py

@@ -11,11 +11,22 @@
 
 # We can display the content of a variable using the print() function
 
-
+print("my integer is ",myint)
+print("my string is ",mystr)
 # Operators are used to perform operations on variables
-
-
+# print("my int added to my flot",myint + myfloat)
+# print("my int times my flot",myint * myfloat)
+# print("my int divided by my flot",myint / myfloat)
+# another_str = "this is another string"
+# print("string added", mystr + another_str)
+# print("nom " * 3)
 # Logical and comparison operators 
-
-
+# print(myint == 10)
+# print(myfloat != 20)
+# print(myint > 20)
+# print(myfloat < 10)
+# print(myint > 5 and myfloat <25.0)
+# print(not(myint > 5 and myfloat <25.0))
 # re-declaring a variable works
+myint = "abc"
+print("change int to string", myint)

Start/Ch3/builtin_start.py

@@ -6,20 +6,25 @@
 mynumbers = [1,3,5,6,9,12,14,17,20,30]
 
 # the len() function calculates the length of a sequence
-
+# print(len(mystring))
+# print(len(mynumbers))
 
 # the max() and min() functions will find the largest and smallest value in a sequence
-
-
+# print(max(mystring))
+# print(min(mynumbers))
 # the str() function will return a string version of an object
-prefix = "result: "
-result = 5
-
+# prefix = "result: "
+# result = 5
+# print(prefix, str(result))
 
 # range(start, stop, step) will create a range of numbers 
 # You can use ranges along with loops 
+# for i in range(5,15,3):
+#   print(i)
 
-
+# for i in range(5,len(mystring),2):
+#   print(mystring[i])
 # the print function itself is pretty flexible - you can embed variables directly in it
 greeting = "Hello!"
 count = 10
+print(f"{greeting} you are visitor number {count}")

Start/Ch3/classes_start.py

@@ -1,4 +1,40 @@
 # LinkedIn Learning Python course by Joe Marini
 # Example file for working with classes
-#
+class Vehicle:
+  def __init__(self, bodystyle):
+    self.bodystyle = bodystyle
+  def drive(self, speed):
+    self.mode = "driving"
+    self.speed = speed
 
+class Car(Vehicle):
+  def __init__(self, enginetype):
+    super().__init__("car")
+    self.wheels = 4
+    self.doors = 4
+    self.engine = enginetype
+  def drive(self, speed):
+    super().drive(speed)
+    print(f"driving my {self.engine} car at {self.speed}")
+
+class Motorcycle(Vehicle):
+  def __init__(self, enginetype, hassidecar):
+    super().__init__("Motorcycle")
+    if (hassidecar):
+      self.wheels = 3
+    else:
+      self.wheels = 2
+    self.doors = 0
+    self.enginetype = enginetype
+  def drive(self, speed):
+    super().drive(speed)
+    print(f"driving my {self.enginetype} car at {self.speed}")
+
+car1 = Car("gas")
+car2 = Car("elecrtric")
+mc1 = Motorcycle("gas", True)
+print(f"the MC has {mc1.wheels} wheels and engine type is {mc1.enginetype}")
+print(f"the car1 has {car1.doors} doors and engine type is {car1.engine}")
+car1.drive(20)
+car2.drive(40)
+mc1.drive(50)

Start/Ch3/exceptions_start.py

@@ -4,10 +4,24 @@
 
 # Errors can happen in programs, and we need a clean way to handle them
 # This code will cause an error because you can't divide by zero:
+#x = 10 / 0
 
 # Exceptions provide a way of catching errors and then handling them in 
 # a separate section of the code to group them together
-
+# try:
+#   x = 10 / 0
+# except:
+#   print("well that didn't work")
 
 # You can also catch specific exceptions
-
+try:
+  answer = input("what should i divide 10 by?")
+  num = int(answer)
+  print(10/num)
+except ZeroDivisionError as e:
+  print("divistion by zero")
+except ValueError as e:
+  print("you didn't give me a valid number")
+  print(e)
+finally:
+  print("finally always runs")

Start/Ch3/modules_start.py

@@ -2,14 +2,15 @@
 # Working with modules of code
 
 # import the math module, which contains features for working with mathematics
-
+import math
+print("the square root of 16 is ", math.sqrt(16))
 
 # import a specific part of the module so you can refer to it more easily
-
-
+from math import pi 
+print("pi",pi)
 # import a module and give it a different name
-
-
+import random as r
+print("random", r.randint(110,400))
 # the math module contains lots of pre-built functions
 
 
@@ -22,7 +23,7 @@
 # try some of the math functions for yourself here:
 
 # Use the 3rd party tabulate module to print tabulated data:
-
+from tabulate import tabulate
 # Sample data
 data = [
   ["Product", "Price", "Stock"],
@@ -32,3 +33,4 @@
 ]
 
 # Create a formatted table
+print(tabulate(data, headers="firstrow",tablefmt="fancy_grid"))