python 练习购物车小程序

 # -*- coding:utf-8 -*-
shp = [
['iphone',5000],
['offee',35],
['shoes',800]
]
pric_list = []
e = int(raw_input("请输入账户金额:"))
while True:
for i,p in enumerate(shp):
print i,p[0],p[1]
enther = raw_input("请输入要购买的商品序号:").strip()
if enther.isdigit():
enther = int(enther)
#p_price = products[choice][1]
pric = shp[enther][1]
if pric <= e:
pric_list.append(shp[enther])
e -= pric
print "您购买的%s已添加到购物车,剩余金额%s" %(shp[enther][0],e)
else:
print "金额不足,请重新选择,剩余金额%s" % e
elif enther == 'quit':
print "购买的商品列表"
for k,v in enumerate(pric_list):
print k,v
print "剩余金额为%s" % e
print "-----欢迎再次光临------"
break

实现了输入金额后购买商品直到金额不足

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