【5.1】dict的abc继承关系 

1 #!/user/bin/env python
2 # -*- coding:utf-8 -*-
3 # dict属于mapping类型
4 from collections.abc import Mapping, MutableMapping
5 a = {}
6 print(isinstance(a, MutableMapping))

 

posted @ 2019-07-26 14:50  _simpleSmile  阅读(175)  评论(0)  编辑  收藏  举报