Python之购物车

#!/usr/bin/env python
# -*- coding:utf-8 -*-
# Author Jiang

import os,sys
prodt=‘E:\python\pythonhomework2\product.txt‘
user=r‘E:\python\pythonhomework2\users.txt‘

pro_file=open(prodt,‘r+‘)  #将商品文件转换成列表
pro_list=pro_file.readlines()
for line1 in pro_list:
    product,price=line1.strip().split()
pro_file.close()

use=open(user,‘r+‘)  #将存有用户信息的文件转换成字典
dic=dict()
for line in use:
    line=line.strip().split(‘ ‘)
    dic[line[0]]=line[1:]
use.close()

name=input(‘请输入用户名：‘)
flag1=True
while flag1:
    for key in dic:
        if key==name:
            password=input(‘请输入密码：‘)
            if password==dic[key][0]:
                print(‘您当前的余额为%s,您已购如下商品：%s‘ %(dic[key][1],dic[key][2:]))
                print(‘可供购买的商品列表如下：‘)
                for index,items in enumerate(pro_list):
                    print(index+1,items)
                num=input(‘请输入商品编号：‘)
                if num.isdigit():
                    num=int(num)
                if dic[key][1]>price[num-1]:
                    dic[key][1]-=price[num-1]
                    print(‘您已成功购买%s商品，您的余额为%s‘ %(product[num-1],dic[key][1]))