python - class类 (五) 继承补充-子类继承父类属性/函数方法

子类继承父类属性/函数方法:

#方式一:(原生方式,不建议使用)
class Dongwu(object):
    def __init__(self,name,sex,old):
        self.name = name
        self.sex = sex
        self.old = old

    def eat(self):
        print("吃~~~~~~`")

class Cat(Dongwu):
    def __init__(self,name,sex,old,num):
        Dongwu.__init__(self,name,sex,old)
        self.num = num

    def eat(self):
        Dongwu.eat(self)
        return "疯狂的吃......"

wc = Cat("wc",'女',4,'普通')
print(wc.eat())
#这种方式一旦父类修改,子类的跟父类相关的所有属性都得修改!!!

 

# 方式二:(通过surper()方式继承父类的属性以及函数方法)
class Dongwu(object):
    def __init__(self,name,sex,old):
        self.name = name
        self.sex = sex
        self.old = old

    def eat(self):
        print("吃~~~~~~`")

class Cat(Dongwu):
    def __init__(self,name,sex,old,num):
        #不需要写父类名,也不要写self
        super().__init__(name,sex,old)
        self.num = num

    def eat(self):
        super().eat()
        return "疯狂的吃!!!!"

wc = Cat("wc",'女',4,'普通')
print(wc.eat())
print(wc.__class__)