面向对象之接口继承

#接口继承
import abc
class All_File(metaclass=abc.ABCMeta):
    @abc.abstractmethod
    def read(self):
        pass

    @abc.abstractmethod
    def write(self):
        pass


class Disk(All_File):
    def read(self):
        print('disk read')
    def write(self):
        print('disk write')

class Cdrom(All_File):
    def read(self):
        print('cdrom read')
    def write(self):
        print('cdroim write')

class Mem(All_File):
    def read(self):
        print('mem read')

    def write(self):
        print('mem write')

m1=Mem()
m1.read()
m1.write()

2018-09-06  14:00:50