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!")
