摘要: # -*- coding: utf-8 -*- from abc import ABC ,abstractclassmethod from collections import namedtuple Customer = namedtuple('Customer','name fidelity') class lineItem: """初始化明细行:产品、数量、单价"... 阅读全文
posted @ 2019-06-22 22:23 何双新 阅读(2647) 评论(0) 推荐(0) 编辑