Python继承和多态

Python继承与多态，程序测试一个动物类，两个子类Dog、Cat。

def run_twice(animal):
    animal.run()
    animal.run()
    
class Animal(object):
     run(self):
        print(‘Animal is running‘)
    #动物类

 Dog(Animal):
    dog is Running... eat(self):
        Eating meat...狗类
 Cat(Animal):
    Cat is running猫类
dog = Dog()
dog.run()
dog.eat()

cat = Cat()
cat.run()

run_twice(Dog())

读书和健身总有一个在路上