1 # Author:yebo
 2 
 3 
 4 items = [
 5     [1,"iphone",5800],
 6     [2,"mac pro",12000],
 7     [3,"latte",31],
 8     [4,"python start",81],
 9     [5,"bike",800]
10 ]
11 shopping_list = []
12 
13 my_salary = int(input("my salary:"))
14 
15 while True:
16     print(items)
17     items_number = int(input("which one do you want to buy?"))
18     items_index = items_number - 1   #实际列表排序从0开始
19 
20     if items[items_index][2] > my_salary:
21         print("you don not have enough money")
22     else:
23         my_salary = my_salary - items[items_index][2]
24         print("you have bought %s,which is %d, my salary remain:%d"
25               %(items[items_index][1],items[items_index][2],my_salary))
26         shopping_list.append(items[items_index][1])
27 
28     continue_confirm = input("if you want to quit, please press 'q'; if not, please press any key.")
29     if continue_confirm == "q":
30         break
31 
32 print("***----list----***")
33 print("you have bought:")
34 for i in shopping_list:
35     print(i)
36 print("***------------***")

 1 __author__ = "Alex Li"
 2 
 3 
 4 product_list = [
 5     ('Iphone',5800),
 6     ('Mac Pro',9800),
 7     ('Bike',800),
 8     ('Watch',10600),
 9     ('Coffee',31),
10     ('Alex Python',120),
11 ]
12 shopping_list = []
13 salary = input("Input your salary:")
14 if salary.isdigit():   #判断输入是否是数字
15     salary = int(salary)
16     while True:
17         for index,item in enumerate(product_list):   #方法一：enumerate在同时需要index和value的时候使用
18             #print(product_list.index(item),item)  #方法二：用.index增加了商品编号
19             print(index,item)
20         user_choice = input("选择要买嘛？>>>:")
21         if user_choice.isdigit():   #判断输入是否是数字
22             user_choice = int(user_choice)
23             if 0 <= user_choice < len(product_list):   #len（）直接得到列表长度
24                 p_item = product_list[user_choice]   #取出购买的商品
25                 if p_item[1] <= salary:  #买的起
26                     shopping_list.append(p_item)   #增加到购物车
27                     salary -= p_item[1]
28                     print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m" %(p_item,salary) )
29                 else:
30                     print("\033[41;1m你的余额只剩[%s]啦，还买个毛线\033[0m" % salary)   #增加字体颜色
31             else:
32                 print("product code [%s] is not exist!"% user_choice)
33         elif user_choice == 'q':
34             print("--------shopping list------")
35             for p in shopping_list:
36                 print(p)
37             print("Your current balance:",salary)
38             exit()
39         else:
40             print("invalid option")