#定义商品列表类

 # def shangpin_list():

 #     for i in com_list:

 #         print(com_list.index(i),end="   ")

 #         for j in i:

 #             print(j,end="   ")

 #         print()

 #     else:

 #         return True

 #程序入口

 salary = int(input("请输入您的工资："))

 com_list = [['iphone6s',5000],['mac book',9000],['coffee',32],['python book',80]]

 shopping_cart_list = [] #购物车

 cum_money = [] #账单

 car_list = []

 com_count = 0

 while True:

     if salary >= 0:

         for i in com_list:  #展示商品

             print(com_list.index(i),end="   ")

             for j in i:

                 print(j,end="   ")

             print()

         gm = input('''想买点啥？

 输入商品编号即可购买，输入quit退出商城。

 请输入》》》''') #开始购物

         if gm != 'quit':

             try:

                 gm = int(gm)

                 salary = salary - int(com_list[gm][1])

                 if salary >= 0:

                     com = com_list[gm][0]   #购买的商品

                     com_money = com_list[gm][1]

                     shopping_cart_list.append([com,com_money])      #购买的商品

                     com_count = com_count+com_money

                     print('购买',com,'您需要支付',com_money,'元--->扣除后余额为：%d'%salary)

                 else:

                     print("余额不足，骚年快去挣钱吧！")

             except ValueError or IndexError as err:

                 print("输入有误呕！")

         else:

             print( '本次您购买了以下商品,共计花费：%d元'%com_count)

             for ij in shopping_cart_list:

                 print( '%s  %s元'%((ij[0]),ij[1]))

             else:

                 exit("您还有余额%d欢迎下次光临"%salary)

     continue

 #!/user/bin/env python3

 # -*- coding=utf-8 -*-

 #__author__:gq

 #date:2016/8/24 0024

 dic = {'北京':{'昌平':['沙河','西二旗','西三旗'],'海淀':['圆明园']}, '河北':{'石家庄':['新华区'],'衡水':['老白干']},'广州':{'深圳':['华强北']}}

 # for index in dic.items():

 #     print(index)

 #一级菜单

 def menu_1():

     dic_01={}

     while True:

         print('一级菜单'.center(55,'#'))

         for index,menu_name in enumerate(dic):

             print(index,menu_name)

             dic_01.setdefault(index,menu_name)

         print(dic_01)

         chose = input('输入菜单序号进入下级菜单，输入b反回上一级菜单')

         if chose.isdigit():

             chose = int(chose)

             if dic_01.get(chose) == None:

                 print('没有这%s这个菜单项，请重新输入！'%chose)

                 continue

             else:

                 #print(dic_01.get(chose))

                 menu_2(dic_01.get(chose))

         elif chose == 'q':

             print("程序退出")

         else:

             print("您的输入有误，请重新输入！")

 #二级菜单

 def menu_2(name):

     dic_2 = {}

     while True:

         flag = False

         print("%s 二级菜单".center(55,'#')%name)

         for index,menu in enumerate(dic[name]):

             print(index,menu)

             dic_2.setdefault(index,menu)

         print(dic_2)

         chose2 = input('输入菜单序号进入下级菜单，输入b反回上一级菜单，输入q退出')

         if chose2.isdigit():            #判断用户输入的内容是否是数字样式

             chose2 = int(chose2)

             #print(dic_2.get(chose2))

             if dic_2.get(chose2) == None:

                 print('没有这%s这个菜单项，请重新输入！'%chose2)

             else:

                 print(dic_2.get(chose2))

                 flag = menu_3(name,dic_2.get(chose2))

                 if flag:

                     return True

                 else:

                     continue

         elif chose2 == 'q':         #用户输入‘q'则退出程序

             print("程序退出")

         elif chose2 == 'b':         #用户输入'b'则反回上级菜单

             break

         else:

             print("您的输入有误，请重新输入！")

 #三级菜单

 def menu_3(name1,name2):

     dic_3 ={}

     while True:

         print('%s 三级菜单'.center(55,'#')%name2)

         for index3,menu3 in enumerate(dic[name1][name2]):

             print(menu3)

             dic_3.setdefault(index3,menu3)

         print(dic_3)

         chose3 = input('输入b反回上一级菜单,输入m反回主菜单，输入q退出')

         if chose3 == 'q':

             print("程序退出")

             exit()

         elif chose3 == 'm':

             return True

         elif chose3 == 'b':

             return False

         else:

             print("您的输入有误，请重新输入！")

 while True:

     menu_1()

 dic = {'北京':{'昌平':{'沙河':{},'回龙观':{},'巩华城':{}},

                '海淀':{'圆明园'}},

        '河北':{'石家庄':{'新华区'},

                '衡水':{'老白干'}},

        '广州':{'深圳':{'华强北'}}}

 dic1 = dic

 parent_list=[]

 while True:

     for i in dic1:

         print(i)

     choose = input('>>>').strip()

     if len(choose)==0:continue

     if choose in dic1:

         parent_list.append(dic1)

         dic1 = dic1[choose]

     elif choose == 'b':

         if parent_list:

             dic1 = parent_list.pop()

     else:

         print("无此项")