多态

class Dog(object):
    def __init__(self,name):
        self.name = name

    def game(self):
        print("%s 蹦蹦跳跳的玩耍" % self.name)

class XiaoTianDog(Dog):
    def game(self):
        print("%s 飞到天上玩耍" % self.name)

class Person(object):
    def __init__(self,name):
        self.name = name


    def game_with_dog(self,dog):
        print("%s 和 %s 一起玩耍" % (self.name,dog.name))
        dog.game()


xt = XiaoTianDog("飞天旺财")
wc = Dog("旺财")
xm = Person("小明")
xm.game_with_dog(wc)

小明 和 旺财 一起玩耍
旺财 蹦蹦跳跳的玩耍