2019.5.16 课后练习。简易购物车程序

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根据之前看过的知识点,以自己的思路先写出了一个程序,后续继续老师的操作再进行优化。

技术图片
 1 salary = int(input("请输入您的工资(单位 元):"))
 2 
 3 print("以下是可购清单:")
 4 
 5 shopping_list = [‘‘,iphone,computer,book,apple_juice,bread,cake]#商品列表
 6 commodity_prices = [0,6000,7000,2,3,3,5] #商品价格列表
 7 already_buy = []#已经购买的商品列表
 8 
 9 print("1.",shopping_list[1],commodity_prices[1],"")
10 print("2.",shopping_list[2],commodity_prices[2],"")
11 print("3.",shopping_list[3],commodity_prices[3],"")
12 print("4.",shopping_list[4],commodity_prices[4],"")
13 print("5.",shopping_list[5],commodity_prices[5],"")
14 print("6.",shopping_list[6],commodity_prices[6],"")
15 
16 select = ""
17 while select != "quit":
18     select = input("购买您需要的宝贝至购物车,请输入数字(如需结算,输入 quit):")
19     print()
20     if select == "1":
21         salary = salary - commodity_prices[1]
22         if salary < 0:
23             print("余额不足,",salary)
24             salary = salary + commodity_prices[1]
25         else:
26             print("已加入",shopping_list[1],"到你的购物车,当前余额:",salary)
27         already_buy.append(shopping_list[1])
28     elif select == "2":
29         salary = salary - commodity_prices[2]
30         if salary < 0:
31             print("余额不足,", salary)
32             salary = salary + commodity_prices[2]
33         else:
34             print("已加入", shopping_list[2], "到你的购物车,当前余额:", salary)
35         already_buy.append(shopping_list[2])
36     elif select == "3":
37         salary = salary - commodity_prices[3]
38         if salary < 0:
39             print("余额不足,", salary)
40             salary = salary + commodity_prices[3]
41         else:
42             print("已加入", shopping_list[3], "到你的购物车,当前余额:", salary)
43         already_buy.append(shopping_list[3])
44     elif select == "4":
45         salary = salary - commodity_prices[4]
46         if salary < 0:
47             print("余额不足,", salary)
48             salary = salary + commodity_prices[4]
49         else:
50             print("已加入", shopping_list[4], "到你的购物车,当前余额:", salary)
51         already_buy.append(shopping_list[4])
52     elif select == "5":
53         salary = salary - commodity_prices[5]
54         if salary < 0:
55             print("余额不足,", salary)
56             salary = salary + commodity_prices[5]
57         else:
58             print("已加入", shopping_list[5], "到你的购物车,当前余额:", salary)
59         already_buy.append(shopping_list[5])
60     elif select == "6":
61         salary = salary - commodity_prices[6]
62         if salary < 0:
63             print("余额不足,", salary)
64             salary = salary + commodity_prices[6]
65         else:
66             print("已加入", shopping_list[6], "到你的购物车,当前余额:", salary)
67         already_buy.append(shopping_list[6])
68 else:
69     print("您已购买以下商品:")
70     print(already_buy)
71     print("余额为:",salary)
72     print("谢谢惠顾,欢迎下次光临!")
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