Python程序2——购物车小程序联系

Posted 2020-10-12

程序：购物车程序

需求:

1. 启动程序后，让用户输入工资，然后打印商品列表
2. 允许用户根据商品编号购买商品
3. 用户选择商品后，检测余额是否够，够就直接扣款，不够就提醒 
4. 可随时退出，退出时，打印已购买商品和余额

 

 1 stuff_list = ["1.water, price:500","2.beer, price:600","3.cola, price:700","4.phone, price:800","5.good water, price:900",   #不用加反斜杠，直接在，下面加就好
 2               "6.movie, price:1000"]
 3 price_list = [500,600,700,800,900,1000]    # 建议不用这种，直接price和stuff的合起来就好，可以用元组
 4 
 5 # product_list = [(‘water, price:‘,500),(‘2.beer, price:‘,600),(‘3.cola, price:‘,700),("4.phone, price:",800) ……这样的形式就好
 6 
 7 salary = input("Please input your salary:")
 8 if salary.isdigit():
 9     salary = int(salary)
10 
11 choice_list = []
12 
13 
14 while  True:  #直接True 会好一点
15     print(stuff_list)
16     choice = int(input("Please input the goods number. If you want to quit,please input -1."))
17     if choice == -1:
18         print("The goods you have bought are %s, and your money is \033[31;1m%s\033[0m left."%(choice_list,salary))
19         break
20     else:
21         if price_list[choice-1] <= salary:                      #比较价格和剩余的金额
22             print("Goods %s is in your shopping car"%choice)
23             salary -= price_list[choice-1]
24             choice_list.append(stuff_list[choice-1])
25         else:
26             print("Your money is not enough")
27 
28 
29 ‘‘‘
30 
31 product_list = [       #这种表述方式就比我的好，因为只用了一个空间，且不会因为顺序变化而导致商品编号出现问题，采用元组的形式也不会出现问题
32     (‘Iphone‘,5800),
33     (‘Mac Pro‘,9800),
34     (‘Bike‘,800),
35     (‘Watch‘,10600),
36     (‘Coffee‘,31),
37     (‘Alex Python‘,120),
38 ]
39 shopping_list = []
40 salary = input("Input your salary:")
41 if salary.isdigit():          #判断是否为数字，然后就转化为int
42     salary = int(salary)
43     while True:
44         for index,item in enumerate(product_list):    #高校地找出下标，enumerate这个不错,下标，项目内容
45             #print(product_list.index(item),item)
46             print(index,item)
47         user_choice = input("选择要买嘛？>>>:")    
48         if user_choice.isdigit():
49             user_choice = int(user_choice)
50             if user_choice < len(product_list) and user_choice >=0:         #还有判断是否用户输入有误，是否在商品里面
51                 p_item = product_list[user_choice]
52                 if p_item[1] <= salary: #买的起
53                     shopping_list.append(p_item)
54                     salary -= p_item[1]
55                     print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m" %(p_item,salary) )  #\033[31;1m%s\033[0m 这个就是变色，变成31红色32绿色33黄色的功能
56                 else:
57                     print("\033[41;1m你的余额只剩[%s]啦，还买个毛线\033[0m" % salary)    #41是背景的红色，42背景的绿色
58             else:
59                 print("product code [%s] is not exist!"% user_choice)
60         elif user_choice == ‘q‘:
61             print("--------shopping list------")
62             for p in shopping_list:         #好像直接print shopping_list 好像也可以用
63                 print(p)
64             print("Your current balance:",salary)
65             exit()
66         else:
67             print("invalid option")‘‘‘