- #!Anaconda/anaconda/python
- #coding: utf-8
- #列表练习,实现简单购物车系统
- product_lists = [(‘iphone‘,5000),
- (‘computer‘,6000),
- (‘girl_friend‘,2000),
- (‘boy_friend‘,3000)]
- shop_lists = []
- for i,v in enumerate(product_lists): #python的内置函数,在字典上是枚举,列举的意思,可以同事获得索引和值
- print (i,v)
- while True:
- money = raw_input(‘请输入你的钱数:‘)
- if money.isdigit():
- money = int(money)
- while True:
- choise = raw_input(‘请输入商品序列号,q退出:‘)
- if choise.isdigit():
- choise = int(choise)
- if choise >= 0 and choise < len(product_lists):
- item = product_lists[choise]
- if money >= item[1]:
- shop_lists.append(item)
- money-=item[1]
- print ‘%s 已经加入购物车,还剩 %d 元‘%(item,money)
- else:
- print ‘钱不够啊!‘
- else:
- print ‘没有这个商品!‘
- elif choise==‘q‘:
- print ‘已经退出系统,你一共买了这些商品:‘
- for i in shop_lists:
- print i
- print ‘还剩%d元‘%money
- qw = 1
- break
- else:
- print ‘输入无效!‘
- if qw == 1:
- break
- else:
- print ‘输入有误!,请从新输入。‘
来源: http://www.bubuko.com/infodetail-2297193.html