Python学习第二天:面向对象之继承

‘‘‘
专业术语：
Dog类是Animal类的子类，Animal类是Dog类的父类，Dog类从Animal类继承
Dog类是Animal类的派生类，Animal类是Dog类的基类，Dog类从Animal类派生
‘‘‘


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("汪汪汪")


class Xiaotianquan(Dog):                    ###继承的传递性
    def fly(self):
        print("神仙")


wangcai = Xiaotianquan()


wangcai.eat()
wangcai.run()
wangcai.drink()
wangcai.sleep()
wangcai.bark()
wangcai.fly()

‘‘‘
专业术语：
Dog类是Animal类的子类，Animal类是Dog类的父类，Dog类从Animal类继承
Dog类是Animal类的派生类，Animal类是Dog类的基类，Dog类从Animal类派生
‘‘‘


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("汪汪汪")


class XiaoTianQuan(Dog):                    ###继承的传递性
    def fly(self):
        print("神仙")

    def run(self):
        print("跑着跑着就飞了")            ###方法的重写


doudou = XiaoTianQuan()


doudou.eat()
doudou.run()
doudou.drink()
doudou.sleep()
doudou.bark()
doudou.fly()

‘‘‘
专业术语：
Dog类是Animal类的子类，Animal类是Dog类的父类，Dog类从Animal类继承
Dog类是Animal类的派生类，Animal类是Dog类的基类，Dog类从Animal类派生
‘‘‘


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("汪汪汪")


class XiaoTianQuan(Dog):                    ###继承的传递性
    def fly(self):
        print("神仙")

    def run(self):
        print("跑着跑着就飞了")            ###方法的重写

    def bark(self):
        print("--------------------------")
        super().bark()                                ###使用super()调用父类中方法，从而实现扩展父类
        #Dog.bark(self)                              ###使用父类名.方法(self) 调用父类中的方法（不推荐使用）
        print("##########################")
doudou = XiaoTianQuan()



doudou.eat()
doudou.run()
doudou.drink()
doudou.sleep()
doudou.bark()
doudou.fly()

class Aaa:
    def test1(self):
        print("我是爸爸1")


class Bbb:
    def test2(self):
        print("我是爸爸2")


class Ccc(Aaa,Bbb):
    #多继承可以让子类对象，同时具有多个父类的属性和方法
    pass


#创建子类对象
c = Ccc()

c.test1()
c.test2()