Python小程序之购物车

 1 goods = [
 2     (‘IPhone‘,5888),
 3     (‘Mac Pro‘,12888),
 4     (‘iWatch‘,2888),
 5     (‘Bike‘,888),
 6     (‘Cofe‘,16),
 7     (‘Book‘,85)
 8 ]
 9 money = int(input("Please Input your Money:"))
10 buylist = []
11 while True:
12     print(‘商品列表‘.center(30,‘-‘))
13     for index,items in enumerate(goods):
14         name,price = items
15         print(index,name,price)
16     user_choice = input(‘Please input your choice:‘)
17     if user_choice.isdigit():
18         user_choice = int(user_choice)
19         if user_choice < len(goods) and user_choice >= 0:
20             if money > goods[user_choice][1]:
21                 money -= goods[user_choice][1]
22                 buylist.append((‘%s,%s‘) % (goods[user_choice][0],goods[user_choice][1]) )
23             else:
24                 choice = input(‘The money are not enough,Continue? ‘)
25                 if choice == ‘y‘:
26                     continue
27                 else:
28                     print(‘您的购物车有：‘)
29                     for info in buylist:
30                         print(info)
31                     exit(‘您的余额为: %s ‘  % money)
32         else:
33             print(‘input Error, retry‘)
34             continue
35     elif user_choice == ‘q‘:
36         if len(buylist) == 0:
37             exit(‘您未购买任何东西,您的余额还有：%s‘ % money)
38         else:
39             print(‘您的购物车有：‘)
40             for info in buylist:
41                 print(info)
42             print(‘您的余额为: %s ‘ % money)
43     else:
44         print(‘\033[31;1mInput Error,retry\033[0m‘)
45         continue