#coding = utf-8

#2016-11-19
#我的工资是存在文件中的，执行后会判断是否存过工资，如果存过无需输入，直接购物，没存过需要输入工资
#wages.txt是存工资的文件

import os

product_list = [

    ['iphone6', 5888],

    ['联想笔记本', 8000],

    ['iphone7', 6888],

]

shop_car = []

if os.path.getsize ('wages.txt'):  # 判断是否写入工资

    money = open ('wages.txt', 'r', encoding='utf-8')

    your_money = money.readline ()

    money.close ()

    while True:

        for item,p in enumerate (product_list):

            print (item, p[0], p[1])

        user_choice = input ('请输入要购买的商品编号，按q退出：')

        if user_choice.isdigit ():

            user_choice = int (user_choice)

            p_price = product_list[user_choice][1]

            your_money = int(your_money)

            if  p_price < your_money:

                shop_car.append(product_list[user_choice])

                your_money -= p_price

                with open ('wages.txt', 'w', encoding='utf-8') as m:

                    m.write(str(your_money))

                print('加入购物车，剩余%d'%your_money)

            else:

                print('工资不够，努力赚钱')

        elif user_choice == 'q':

            for k,v in enumerate(shop_car):

                print(k,v)

            print('剩余钱数%d'%your_money)

            exit()

        else:

            print('参数不正确,请重新选择')

else:

    your_money = input('请输入你的工资')

    if your_money.isdigit:

        your_money = int (your_money)

        with open ('wages.txt', 'w', encoding='utf-8') as money:

            money.write (str (your_money))

    while True:

        for item, p in enumerate (product_list):

            print (item, p[0], p[1])

        user_choice = input ('请输入要购买的商品编号，按q退出：')

        if user_choice.isdigit ():

            user_choice = int (user_choice)

            p_price = product_list[user_choice][1]

            if p_price < int(your_money):

                shop_car.append (product_list[user_choice])

                your_money -= p_price

                with open ('wages.txt', 'w', encoding='utf-8') as m:

                    m.write (str (your_money))

                print ('加入购物车，剩余%d' % your_money)

            else:

                print ('工资不够，努力赚钱吧小伙')

        elif user_choice == 'q':

            for k, v in enumerate (shop_car):

                print (k, v)

            print ('剩余钱数%d' % your_money)

            exit ()

        else:

            print ('参数不正确,请重新选择')

    else:

        exit ('您的工资不合法：')