python 练习购物车小程序

 1 # -*- coding:utf-8 -*-
 2 shp = [
 3     ['iphone',5000],
 4     ['offee',35],
 5     ['shoes',800]
 6 ]
 7 pric_list = []
 8 e = int(raw_input("请输入账户金额:"))
 9 while True:
10     for i,p in enumerate(shp):
11         print i,p[0],p[1]
12     enther = raw_input("请输入要购买的商品序号:").strip()
13     if enther.isdigit():
14         enther = int(enther)
15         #p_price = products[choice][1]
16         pric = shp[enther][1]
17         if pric <= e:
18             pric_list.append(shp[enther])
19             e -= pric
20             print "您购买的%s已添加到购物车，剩余金额%s" %(shp[enther][0],e)
21         else:
22             print "金额不足，请重新选择，剩余金额%s" % e
23     elif enther == 'quit':
24         print "购买的商品列表"
25         for k,v in enumerate(pric_list):
26             print k,v
27             print "剩余金额为%s" % e
28         print "-----欢迎再次光临------"
29         break