1 #/usr/bin/env python
2 #-*- coding:utf-8 -*-
3 # Day2/shopping_cart.py
4
5 _author_ = 'hepidong'
6
7 # 程序：购物车程序
8 #
9 # 需求:
10 #
11 # 启动程序后，让用户输入工资，然后打印商品列表
12 # 允许用户根据商品编号购买商品
13 # 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
14 # 可随时退出，退出时，打印已购买商品和余额
15
16
17 salay = int(input('请输入您的工资：'))
18
19 ShoppingCart = []
20 while True:
21 List = [['iPhone', 5000], ['HuaWei', 3000], ['XiaoMi', 2000], ['oppo', 1000]]
22 for i in List:
23 num = List.index(i)
24 print (num + 1,'-', i)
25
26 your_num = input("请选择商品编号（q退出）：")
27 if your_num.isdigit():
28 your_num = int(your_num)
29 if your_num <= len(List):
30 if List[your_num - 1][1] <= salay:
31 salay = salay - List[your_num - 1][1]
32 ShoppingCart.append(List[your_num -1])
33 print ('购买成功！')
34 elif List[your_num - 1][1] > salay:
35 print ('您的余额已不足购买本商品！请重新选择或退出（q）')
36 else:
37 print ('输入错误，请重新输入！')
38 continue
39 elif your_num == 'q':
40 print ('本次您购买了', ShoppingCart)
41 print ('购物结束，您的余额为%d元。' % salay)
42 exit()
43 else:
44 print ('输入错误，请重新输入！')
45 continue
