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‎Ch2 - Basics/challenge_solution.py

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# Solution to programming challenge for Learning Python course
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# LinkedIn Learning Python course by Joe Marini
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#
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def is_palindrome(teststr):
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# use the slice trick to reverse the string
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if teststr == teststr[::-1]:
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return True
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return False
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run = True
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while (run):
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teststr = input("Enter string to test for palindrome or 'exit':")
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# If the user types "exit" then quit the program
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if teststr == "exit":
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run = False
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break
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# convert the string to all lower case
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teststr = teststr.lower()
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# strip all the spaces and punctuation from the string
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newstr = ""
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for x in teststr:
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if x.isalnum():
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newstr += x
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print("Palindrome test:", is_palindrome(newstr))

‎Ch2 - Basics/classes_finished.py

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#
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# Example file for working with classes
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# LinkedIn Learning Python course by Joe Marini
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#
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class Vehicle():
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def __init__(self, bodystyle):
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self.bodystyle = bodystyle
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def drive(self, speed):
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self.mode = "driving"
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self.speed = speed
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class Car(Vehicle):
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def __init__(self, enginetype):
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super().__init__("Car")
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self.wheels = 4
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self.doors = 4
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self.engine = enginetype
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def drive(self, speed):
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super().drive(speed)
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print("Driving my", self.engine, "Car at ", self.speed)
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class Motorcycle(Vehicle):
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def __init__(self, enginetype, hassidecar):
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super().__init__("Motorcycle")
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if (hassidecar):
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self.wheels = 2
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else:
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self.wheels = 3
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self.doors = 0
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self.engine = enginetype
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def drive(self, speed):
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super().drive(speed)
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print("Driving my", self.engine, "motorcylce at ", self.speed)
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car1 = Car("gas")
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car2 = Car("electric")
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mc1 = Motorcycle("gas", True)
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print(mc1.wheels)
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print(car1.engine)
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print(car2.doors)
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car1.drive(30)
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car2.drive(40)
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mc1.drive(50)

‎Ch2 - Basics/classes_start.py

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#
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# Example file for working with classes
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# LinkedIn Learning Python course by Joe Marini
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#
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‎Ch2 - Basics/conditionals_finished.py

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#
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# Example file for working with conditional statements
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# LinkedIn Learning Python course by Joe Marini
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#
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def main():
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x, y = 10, 100
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# conditional flow uses if, elif, else
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if x < y:
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result = "x is less than y"
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elif x == y:
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result = "x is same as y"
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else:
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result = "x is greater than y"
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print(result)
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# conditional statements let you use "a if C else b"
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result = "x is less than y" if (x < y) else "x is greater than or equal to y"
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print(result)
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# Python does not have support for higher-order conditionals
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# like "switch-case" in other languages
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if __name__ == "__main__":
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main()

‎Ch2 - Basics/conditionals_start.py

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#
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# Example file for working with conditional statements
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# LinkedIn Learning Python course by Joe Marini
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#
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def main():
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x, y = 10, 100
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# conditional flow uses if, elif, else
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# conditional statements let you use "a if C else b"
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if __name__ == "__main__":
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main()

‎Ch2 - Basics/exceptions_finished.py

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#
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# Example file for working with classes
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# LinkedIn Learning Python course by Joe Marini
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#
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# Errors can happen in programs, and we need a clean way to handle them
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# This code will cause an error because you can't divide by zero:
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# x = 10 / 0
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# Exceptions provide a way of catching errors and then handling them in
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# a separate section of the code to group them together
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try:
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x = 10 / 0
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except:
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print("Well that didn't work!")
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# You can also catch specific exceptions
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try:
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answer = input("What should I divide 10 by?")
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num = int(answer)
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print(10 / num)
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except ZeroDivisionError as e:
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print("You can't divide by zero!")
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except ValueError as e:
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print("You didn't give me a valid number!")
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print(e)
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finally:
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print("The finally section always runs")
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‎Ch2 - Basics/exceptions_start.py

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#
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# Example file for working with classes
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# LinkedIn Learning Python course by Joe Marini
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#
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# Errors can happen in programs, and we need a clean way to handle them
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# TODO: This code will cause an error because you can't divide by zero:
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# TODO: Exceptions provide a way of catching errors and then handling them in
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# a separate section of the code to group them together
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# TODO: You can also catch specific exceptions
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‎Ch2 - Basics/functions_finished.py

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#
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# Example file for working with functions
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# LinkedIn Learning Python course by Joe Marini
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#
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# define a basic function
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def func1():
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print("I am a function")
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# function that takes arguments
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def func2(arg1, arg2):
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print(arg1, " ", arg2)
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# function that returns a value
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def cube(x):
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return x*x*x
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# function with default value for an argument
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def power(num, x=1):
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result = 1
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for i in range(x):
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result = result * num
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return result
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# function with variable number of arguments
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def multi_add(*args):
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result = 0
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for x in args:
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result = result + x
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return result
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func1()
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print(func1())
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print(func1)
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func2(10, 20)
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print(func2(10, 20))
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print(cube(3))
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print(power(2))
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print(power(2, 3))
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print(power(x=3, num=2))
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print(multi_add(4, 5, 10, 4))

‎Ch2 - Basics/functions_start.py

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#
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# Example file for working with functions
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# LinkedIn Learning Python course by Joe Marini
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#
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# TODO: define a basic function
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# TODO: function that takes arguments
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# TODO: function that returns a value
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# TODO: function with default value for an argument
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# TODO: function with variable number of arguments
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‎Ch2 - Basics/helloworld_finished.py

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#
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# Example file for HelloWorld
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# LinkedIn Learning Python course by Joe Marini
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#
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def main():
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print("hello world!")
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name = input("What is your name? ")
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print("Nice to meet you,", name)
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if __name__ == "__main__":
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main()

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