python 用abc模块构建抽象基类Abstract Base Classes

　　见代码：

 #!/usr/bin/env python
 # -*- coding: utf-8 -*-
 # @Time    : 2018/08/01 16:58
 from abc import ABCMeta, abstractmethod

 class SClass(object):
     __metaclass__ = ABCMeta

     @abstractmethod
     def my_print(self):
         pass

 class C0Class(SClass):
     pass

 class C1Class(SClass):

     def my_print(self):
         print 'call my_print in child instance.'

 if __name__ == '__main__':
     try:
         c0 = C0Class()
         c0.my_print()
     except Exception, e:
         print e.message

     c1 = C1Class()
     c1.my_print()

输出：

 Can't instantiate abstract class C0Class with abstract methods my_print
 call my_print in child instance.