本人不善言辞，不废话，直接上代码：#!/usr/bin/env python
# -*- coding: utf-8 -*-
#_auth by kk
def goods_list():
shangpin={"iphone":"6000","MacAir":"15000","tea":"50","book":"30"}
print "-"*12 +u"商品列表" +"-"*12
for key in shangpin:
print "goods: %s --> price: %s" % (key,shangpin[key])
print "-"*12 +u"商品列表" +"-"*12
return shangpin
def jiesuan(money,shangpin_list):
sheng_money=money
while True:
qt=raw_input(u"您需要购物吗？y/n ")
if qt=="y":
gou_goods=raw_input(u"请输入您想购买的商品名字，购买的商品请参考商品列表： ")
if gou_goods in shangpin_list:
sheng_money=int(sheng_money)-int(shangpin_list[gou_goods])
if sheng_money>=0:
print " 您购买了%s商品，共消费 %s, 您还剩 %s元钱！" % (gou_goods,shangpin_list[gou_goods],sheng_money)
else:
print "您的金钱不足,请充值，欢迎下次光临！"
break
else:
print "没有此商品！"
else:
print "欢迎下次光临！"
break
if __name__== "__main__":
shangpin_list=goods_list()
try:
money=raw_input(u"请充值后在购买商品，请输入充值金额： ")
print "您的充值金额为 %s,充值成功！"% (money)
except IOError,e:
print "输入错误，请检查!"
jiesuan(money,shangpin_list)
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