inheritance.py

class Animal():
    def __init__(self):
        print("Animal Created")

    def who_am_i(self):
        print("I am an animal")

    def eat(self):
        print("I am eating")


class Dog(Animal):
    def __init__(self):
        Animal.__init__(self)
        print("Dog created")


    def eat(self):
        print("I am eating  meat")

    def bark(self):
        print("Woof!")


"""my_animal = Dog()
print(my_animal.who_am_i())"""


# parent class
class Bird:

    def __init__(self):
        print("Bird is ready")

    def whoisThis(self):
        print("Bird")

    def swim(self):
        print("Swim faster")


# child class
class Penguin(Bird):

    def __init__(self):
        # call super() function
        super().__init__()
        print("Penguin is ready")

    def whoisThis(self):
        print("Penguin")

    def run(self):
        print("Run faster")


peggy = Penguin()
peggy.whoisThis()
peggy.swim()
peggy.run()