要求:省市县三级菜单查询,可返回上级,可任意级退出
# -*- coding: utf-8 -*- # @Author: oppend # @Date: 2017-07-27 23:10:46 # @Last Modified by: oppend # @Last Modified time: 2017-07-29 23:26:57 # 省市区三级菜单 import os city = {"北京市":{"北京市":["东城区","西城区","朝阳区","丰台区"] }, "天津市":{"天津市":["和平区","河东区","河西区","南开区","河北区"], "经开区":["经开西区","经开东区"] } } sheng = sorted(list(city.keys())) back_flag = False exit_flag = False while not back_flag and not exit_flag: # 输出省列表 print('-----省-----') for snum,sname in enumerate(sheng,1): print('[{0}]{1}'.format(snum,sname)) choice_sheng = input('省序号[q]退出:') os.system('clear') # 判断是否为数字 if choice_sheng.isdigit(): choice_sheng = int(choice_sheng)-1 # 判断省序号范围 if choice_sheng >= len(sheng) or choice_sheng < 0: print('序号{0}错误'.format(choice_sheng+1)) continue # 根据序号取省名称 while not back_flag and not exit_flag: sheng_name = sheng[choice_sheng] shi = sorted(list(city[sheng_name].keys())) # 输出市列表 print('-----市-----') for shi_num,shi_name in enumerate(shi,1): print('[{0}]{1}'.format(shi_num,shi_name)) choice_shi = input('市序号[u]回上级[q]退出:') os.system('clear') if choice_shi.isdigit(): choice_shi = int(choice_shi)-1 # 判断市序号范围 if choice_shi >= len(shi) or choice_shi < 0: print('序号{0}错误'.format(choice_shi+1)) continue # 根据序号取市名称 while True: shi_name = shi[choice_shi] xian_list = city[sheng_name][shi_name] # 输出县列表 print('-----县-----') for xian_num,xian_name in enumerate(xian_list,1): print('[{0}]{1}'.format(xian_num,xian_name)) choice_xian = input('[u]回上级[q]退出:') os.system('clear') if not choice_xian.isdigit(): if choice_xian.lower() == 'u': break elif choice_xian.lower() == 'q': back_flag = True exit_flag = True break else: print('命令错误!') else: if choice_shi.lower() == 'u': break elif choice_shi.lower() == 'q': back_flag = True exit_flag = True break else: print('序号{0}不存在!'.format(choice_shi)) else: if choice_sheng.lower() == 'q': break else: print('序号{0}不存在!'.format(choice_sheng))