Python基础课：不一样的多继承

class Animal:
    pass

class Mammal(Animal):#哺乳类
    pass

class Bird(Animal):#鸟类
    pass

class Dog(Mammal): #狗类
    pass

class Parrort(Bird): #鹦鹉类
    pass

class Runnable:  #跑类
    def run(self):
        print(‘running...‘)

class Flyable:  #分类
    def fly(self):
        print(‘flying...‘)

#多继承开始了，注意高能预警
class Dog(Mammal, Runnable):
    pass

class Parrot(Bird, Flyable):
    pass