抽象类与归一化

import abcclass Animal(metaclass=abc.ABCMeta):  # 只能被继承，不能被实例化    @abc.abstractmethod    def run(self):        pass    @abc.abstractmethod    def eta(self):        passclass Pople(Animal):    def run(self):        print('Pople is runing')    def eta(self):        print('Pople is etaing')class Pig(Animal):    def run(self):        print('Pig is runing ')    def eta(self):        print('Pig is etaing')class Dog(Animal):    def run(self):        print('Dog is runing ')    def eta(self):        print('Dog is etaing')pople1 =Pople()pig1 = Pig()dog1 = Dog()

来源：https://www.cnblogs.com/kingforn/p/11337643.html