python面向对象-多态

#!/usr/local/bin/python3
# -*- coding:utf-8 -*-
'''

多态的作用：实现接口的重用

'''
class Animal(object):
    def __init__(self, name):
        self.name = name
        print("i am %s" % self.name)
    def animal_talk(obj):
        obj.talk()

class Cat(Animal):
    def talk(self):
        print("miao")

class Dog(Animal):
    def talk(self):
        print("wang wang")

c = Cat("aaa")
# cat1.talk()

d = Dog("bbb")
# dog1.talk()

Animal.animal_talk(c)   #通过统一的接口来传入不同的对象，结果是多种形态的
Animal.animal_talk(d)