本文实例讲述了python3实现的简单三级菜单功能。分享给大家供大家参考,具体如下:
三级菜单_要求:
1. 运行程序输出第一级菜单
2. 选择一级菜单某项,输出二级菜单,同理输出三级菜单
3. 菜单数据保存在文件中
4. 让用户选择是否要退出
5. 有返回上一级菜单的功能
执行代码:
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#!/usr/bin/env python3 # author:robert # --*-- coding: utf-8 --*-- data = { "北京" :{ "东城区" :{ "安定门" :[ "国子监大街" , "孔庙" , "钟楼" ], "建国门" :[ "jinbaojie" , "长安街" , "西街" ], "朝阳门" :[ "东四南大街" , "朝阳门内大街" , "孚王府" ] }, "朝阳区" :{ "和平街" :[ "胜古庄社区" , "樱花社区" , "和平东街社区" ], "八里庄" :[ "慈寿寺塔" , "定慧寺" ], "三里屯" :[ "798艺术区" , "北京工人体育馆" ] }, "海淀" :{} }, '山东' :{ "德州" :{}, "青岛" :{}, "济南" :{} }, '广东' :{ "东莞" :{}, "常熟" :{}, "佛山" :{} } } exit_flag = false while not exit_flag: for i in data: print (i) choice = input ( "选择进入-->:" ) if choice in data: while not exit_flag: for i2 in data[choice]: print ( "\t" ,i2) choice2 = input ( "选择进入2-->:" ) if choice2 in data[choice]: while not exit_flag: for i3 in data[choice][choice2]: print ( "\t\t" ,i3) choice3 = input ( "选择进入3-->:" ) if choice3 in data[choice][choice2]: for i4 in data[choice][choice2][choice3]: print ( "\t\t" ,i4) choice4 = input ( "最后一层,按b返回-->:" ) if choice4 = = "b" : pass elif choice4 = = "q" : exit_flag = true if choice3 = = "b" : break elif choice4 = = "q" : exit_flag = true if choice2 = = "b" : break elif choice4 = = "q" : exit_flag = true |
运行效果:
希望本文所述对大家python程序设计有所帮助。
原文链接:https://blog.csdn.net/weixin_39099836/article/details/78388959