python_入门_三级菜单

'''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
'''

 # -*- coding: utf-8 -*-
 # __author__ = 'qi'
 prov_city_conty ={"北京":
                     {"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","顺义区"},
                 "上海":
                     {"黄埔区","卢湾区","徐汇区","长宁区","静安区","普陀区","闸北区","杨浦区","闵行区"},
                 "河北":
                     {
                     "石家庄市":
                                 {"长安区","桥东区","桥西区","新华区","井陉矿区","裕华区"},
                     "唐山市":
                                 {"路南区","路北区","古冶区","开平区","丰润区","滦县"}
                     },
                 "江苏":
                     {
                     "南京市":
                                 {"玄武区","白下区","秦淮区","建邺区","鼓楼区","下关区","浦口区"},
                     "苏州市":
                                 {"沧浪区","平江区","金阊区","吴中区","相城区","常熟市"}
                     }
                 }
 while True:
     print ("-----打印省菜单------")
     for index,prov in enumerate(prov_city_conty,1):
         print index, prov
     choice_p_menu = raw_input("please select province number[quit:q]:")
     if choice_p_menu.isdigit():
         choice_p_menu = int(choice_p_menu)
         if choice_p_menu>0 and choice_p_menu<len(prov_city_conty):
             prov_name_list = prov_city_conty.keys()
             prov_name = prov_name_list[choice_p_menu-1]
             while True:
                 print ("-----"+prov_name+"------")
                 for index,city in enumerate(prov_city_conty[prov_name],1):
                     print index,city
                 if prov_name not in ["北京","上海"]:
                     choice_city_menu = raw_input("please select city number[quit:q]|[return:r]:")
                     if choice_city_menu.isdigit():
                         choice_city_menu = int(choice_city_menu)
                         if choice_city_menu>0 and choice_city_menu<len(prov_city_conty[prov_name]):
                             city_name_list = prov_city_conty[prov_name].keys()
                             city_name = city_name_list[choice_city_menu-1]
                             while True:
                                 print ("-----"+city_name+"------")
                                 for county in prov_city_conty[prov_name][city_name]:
                                     print county
                                 choice_q_r_menu = raw_input("please select [quit:q]|[return:r]:")
                                 if choice_q_r_menu == "q":
                                     exit()
                                 elif choice_q_r_menu == "r":
                                     break
                                 else:
                                     print("your input code %s is not exist!" %choice_q_r_menu)
                                     continue
                         else:
                             print ("city code %s is not exist!" %choice_city_menu)
                             continue
                     elif choice_city_menu == "q":
                         exit()
                     elif choice_city_menu == "r":
                         break
                 else:
                     choice_q_r_menu = raw_input("please select [quit:q]|[return:r]:")
                     if choice_q_r_menu == "q":
                         exit()
                     elif choice_q_r_menu == "r":
                         break
                     else:
                         print("your input code %s is not exist!" %choice_q_r_menu)
                         continue
         else:
             print ("province code %s is not exist!" %choice_p_menu)
     elif choice_p_menu == "q":
         break