xiya4321

摘要： '''程序：三级菜单要求：1、打印省、市、县三级菜单2、可返回上一级3、可随时退出程序''' 1 # -*- coding: utf-8 -*- 2 # __author__ = 'qi' 3 prov_city_conty ={"北京": 4 {"东城区","西城区","崇文区","宣武区","朝阳区","丰台区","石景山区","海淀区"," 阅读全文