Python_三级菜单

 1 area = {
 2     '东城区':{
 3         '安定门街道':['五道营','永康','箭厂','国西','国东','方家'],
 4         '建国门街道':['毛家湾办事处','东观音寺办事处','江擦办事处','西裱褙办事处','方巾巷办事处'],
 5         '朝阳门街道':['本司胡同','大方家胡同','灯草胡同','礼士胡同']
 6     },
 7     '西城区':{
 8         '西长安街街道':['南北长街','府右街南','光明','西交民巷','北新华街'],
 9         '金融街街道':['辖阜西','民康','锦北','王府仓','大喜'],
10         '牛街街道':['菜市口胡同','北半截胡同','南半截胡同','银行宿舍','烂缦胡同']
11     },
12     '朝阳区':{
13         '南磨房地区':['双龙一','双龙二','双龙三','双龙四','双龙五'],
14         '高碑店地区':['高井','八里庄','北花园','高碑店','半堡店'],
15         '将台地区':['安家楼','驼房营','东八间房','西八间房']
16     },
17 }

 1 while True:
 2     for element in options:
 3         print(element)
 4     choose = input("Please enter your options:")
 5     if choose in options:
 6         options_list.append(options)
 7         options = options[choose]
 8     elif choose == "b":
 9         if options_list:
10             options = options_list.pop()
11 12     else:
13         print("No such service!")