Python对象继承

class Dad:
    money=1000

    def __init__(self,name):
        self.name=name

    def work(self):
        print(‘working‘)

class Sun(Dad):
    """不写初始化方法默认继承父类的初始化方法"""
    pass

s=Sun(‘father‘)
print(s.name)
s.work()
print(s.money)

import  abc

class All_File(metaclass=abc.ABCMeta):

    """字类必须重写该方法"""
    @abc.abstractmethod
    def read(self):
        pass

    """字类必须重写该方法"""
    @abc.abstractmethod
    def write(self):
        pass

class Disk(All_File):

    def __init__(self):
        pass

    def read(self):
        print(‘read‘)
    def write(self):
        print(‘write‘)

d=Disk()
d.read()
d.write()