Python/ex42.py at master · believedshelf2/Python · GitHub

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class Animal(object):
    pass


class Dog(Animal):

    def __init__(self, name):

        self.name = name


class Cat(Animal):

    def __init__(self, name):

        self.name = name


class Person(object):

    def __init__(self, name):

        self.name = name


        self.pet = None


class Employee(Person):

    def __init__(self, name, salary):

        super(Employee, self).__init__(name)

        self.salary = salary


class Fish(object):
    pass


class Salmon(Fish):
    pass


class Halibut(Fish):
    pass


rover = Dog("Rover")


satan = Cat("Satan")


mary = Person("Mary")


mary.pet = satan


frank = Employee("Frank", 120000)


frank.pet = rover


flipper = Fish()


crouse = Salmon()


harry = Halibut()