Python繼承和多態

Python繼承與多態，程序測試一個動物類，兩個子類Dog、Cat。

def run_twice(animal):
    animal.run()
    animal.run()
    
class Animal(object):
    def run(self):
        print('Animal is running')
    #動物類

class Dog(Animal):
    def run(self):
        print('dog is Running...')
    def eat(self):
        print('Eating meat...')
    #狗類
class Cat(Animal):
    def run(self):
        print('Cat is running')
    #貓類
dog = Dog()
dog.run()
dog.eat()

cat = Cat()
cat.run()

run_twice(Dog())

讀書和健身總有一個在路上