多态

class Animal:
    def __init__(self, name): 
        self.name = name

    def talk(self):
        pass 
####多态
    @staticmethod
    def animal_talk(obj):
        obj.talk()

class Cat(Animal):
    def talk(self):
        print('Meow!')


class Dog(Animal):
    def talk(self):
        print('Woof! Woof!')


d = Dog("哈士奇")
#d.talk()

c = Cat("苗")

###要调用谁就把谁传进去
Animal.animal_talk(c)
Animal.animal_talk(d)