Python简单的购物车小代码

 1 # -*- coding: utf-8 -*-
 2 # @Time    : 2018-05-31 14:56
 3 # @Author  : 超人
 4 # @Email   : [email protected]
 5 # @File    : 购物车小练习
 6 # @Software: PyCharm
 7 
 8 
 9 goods_list = [
10     ['apple',30],
11     ['car',80000],
12     ['tesla',999999],
13     ['computer',20000]
14 ]
15 shopping_car=[]
16 money = input('请输入购买金额:')
17 if money.isdigit():
18     money=int(money)
19     while True:
20         for i,o in enumerate(goods_list):
21             print(i,o)
22         goods_id = input('请输入购买的商品序号[退出q]:')
23         if goods_id.isdigit():
24             goods_id=int(goods_id)
25             if goods_id>=0 and goods_id<len(goods_list):
26                 goods_price=goods_list[goods_id]
27                 money=money-goods_price[1]
28                 if money>0:
29                     print(goods_price)
30                     shopping_car.append(goods_price)
31                 else:
32                     print('余额不足')
33                     break
34             else:
35                 print('商品编号不存在')
36         elif goods_id == 'q':
37             print('-----------------------购买如下商品-------------------------------')
38             for i in shopping_car:
39                 print(i)
40             print('剩余%s元钱'%money)
41             break
42 else:
43             print('请输入合法字符!')