carefree185#python-learn#面向对象-多态和鸭子类型1

# 三十一、多态 多态指的是一类事物有多种形态，比如动物有多种形态：猫、狗、猪 ## 31.1 多态性 ```python class Animal: def talk(self): # 动物共有的方法, 交流 print("%s 发出叫声" % self.__class__, end=": ") class Cat(Animal): #动物的形态之一:猫 def talk(self): super(Cat, self).talk() print('喵喵喵。。。') class Dog(Animal): #动物的形态之二:狗 def talk(self): super(Dog, self).talk() print("汪汪汪。。。") class Pig(Animal): #动物的形态之三:猪 def talk(self): super(Pig, self).talk() print('哼哼哼。。。') class People(Animal): def talk(self): super(People, self).talk() print('嘤嘤嘤。。。') animal1 = People() animal2 = Dog() animal3 = Pig() animal4 = Cat() animal1.talk() animal2.talk() animal3.talk() animal4.talk() def