python函数-面向对象三大特性-（继承）- 单继承和方法重写、多态02

川长思鸟来 2023-06-30 12:53 94阅读 0赞

# 方法重写 #

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 1]

## 01练习，直接把叫替换了 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 2]

class Animal:
        def eat(self,):
            print("吃")
        def drink(self):
            print("喝")
        def run(self):
            print("跑")
        def sleep(self):
            print("睡")
    class Dog(Animal):
        def bark(self):
            print("汪汪叫")
    # class Cat(Animal):
    # def catch(self):
    # print("捉")
    class Xiaotianquan(Dog):
        def fly(self):
            print("飞")
        # 直接去加bark的语法，会替换之前的“叫”为“神狗的叫”
        def bark(self):
            print("神狗的叫")
        # super().之前的调用，会调用现在的和之前的
            # super().bark()
            # print("旺旺呜呜呜")
    wangcai = Xiaotianquan()
    wangcai.eat()
    wangcai.drink()
    wangcai.run()
    wangcai.sleep()
    wangcai.bark()
    wangcai.fly()

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 3]

## 02，把之前的叫也显示出来 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 2]

class Animal:
        def eat(self,):
            print("吃")
        def drink(self):
            print("喝")
        def run(self):
            print("跑")
        def sleep(self):
            print("睡")
    class Dog(Animal):
        def bark(self):
            print("汪汪叫")
    # class Cat(Animal):
    # def catch(self):
    # print("捉")
    class Xiaotianquan(Dog):
        def fly(self):
            print("飞")
        # 直接去加bark的语法，会替换之前的“叫”为“神狗的叫”
        def bark(self):
            print("神狗的叫")
        # super().之前的调用，会调用现在的和之前的
            super().bark()
            print("旺旺呜呜呜")
    wangcai = Xiaotianquan()
    wangcai.eat()
    wangcai.drink()
    wangcai.run()
    wangcai.sleep()
    wangcai.bark()
    wangcai.fly()

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 4]

## 多态 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 5]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 6]

class Dog(object):
        def __init__(self, name):
            self.name = name
        def game( self ):
            print("%s 蹦蹦跳跳的玩耍..." %self.name)
    class xiaotianquan(Dog):
        def game(self):
            print("%s 飞到天上去玩耍..."%self.name)
    class person(object):
        def __init__(self, name):
            self.name = name
        def game_with_dog(self, dog):
            print("%s 和%s 快乐的玩耍..." % (self.name, dog.name))
            dog.game()
    wangcai  = Dog("旺财")
    xiaoming = person("小明")
    xiaoming.game_with_dog(wangcai)

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MTY2NTYzNw_size_16_color_FFFFFF_t_70 7]

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