Basic Animal class example

Animal.py

class Animal:
    class_var = 'foo'
    def __init__(self, name, age=11):
        self.name = name
        self.age = age

    def greet(self):
        print(f"Hello, I'm {self.name}")


class Dog(Animal):

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


animal = Animal('animal')

animal.greet()
"Hello I'm animal"
print(animal.name)
"animal"

Fido = Dog('Fido',16)
Fido.bark()
'Woof'
Fido.greet()
"Hello, I'm Fido"
print(Fido.class_var)
'foo'

class Poodle(Dog):
    pass #needed when you don't want to add anything, but the whitespace-based syntax demands some kind of line, like here


Class Cat(Animal):
    #overriding the Parent greet by simply redefining it in the child class
    def greet(self):
        print('meow')