1 salary = input(‘您的工资是：‘)
 2 item_list = [
 3     (‘iphone‘,5800),
 4     (‘pc‘,12325),
 5     (‘watch‘,7000),
 6     (‘book‘,38),
 7     (‘pen‘,5),
 8     (‘game‘,1000)
 9 ]
10 buy_list=[]
11 print(type(salary))
12 while True:
13     if salary.isdigit():
14         salary = int(salary)
15         break
16     else:
17         salary = input(‘请输入正确的工资,您的工资是：‘)
18 
19 while True:
20     # print(salary)
21 
22         # print(type(salary))
23         # print(salary)
24         for index, item in enumerate(item_list):
25             print(index, item)
26         user_choice = input(‘要买什么>>>：‘)
27         if user_choice.isdigit():
28             user_choice = int(user_choice)
29             if user_choice < len(item_list) and user_choice >= 0:
30                 p_item = item_list[user_choice]
31                 if salary >= p_item[1]:
32                     salary -= p_item[1]
33                     buy_list.append(p_item)
34                     print(‘余额：‘,salary)
35                 else:
36                     print(‘没钱了‘)
37             else:
38                 print(‘输入正确产品编号：‘)
39         elif user_choice == ‘q‘:
40             print(‘-------------shopping list--------------‘)
41             for i in buy_list:
42                 print(i)
43             print(‘还剩下:‘,salary)
44             exit()
45         else:
46             print("输入正确商品")