购物车程序

需求：
1、启动程序后，让用户输入工资，然后打印商品列表
2、允许用户根据商品编号购买商品
3、用户选择商品后，检测余额是否够，够就直接扣款，不够就提醒
4、可随时退出，退出时，打印已购买商品和余额

一、
# -*- coding:utf-8 -*-
salary=int(raw_input("请输入工资："))
acquire=[]
shop=["pen","book","bootle","umbrella"]
while 1:
    line=[10,20,30,40]
    show='''1、pen:%d\n2、book:%d\n3、boottle:%d\n4、umbrella:%d'''%(line[0],line[1],line[2],line[3])
    print show
    select=raw_input("请选择需要购买的商品,若没有想买的商品请输入q:")
    if select=='q':
        print "已购买商品：",acquire
        print "您的余额：",salary
        break
    elif int(select)==1:
        if salary-line[0]<0:
            print "您的余额不足请选择其它商品"
            continue
        else:
            acquire.append(shop[0])
            salary = salary - line[0]
    elif int(select)<5:
        i=int(select)
        if salary-line[i-1]<0:
            print "您的余额不足请选择其它商品"
            continue
        else:
            acquire.append(shop[i-1])
            salary=salary-line[i-1]
    else:
        print "请输入正确的商品编号"

二、

salary = input("Input your salary:")
shopping_list = []
shop_list = [("Pen", 100),
             ("book", 50),
             ("whitch", 20)]
if salary.isdigit():
    salary = int(salary)
    while True:
        for index, shop in enumerate(shop_list):
            print(index, shop)
        item_shop = input("Please select the shop that you want to buy:")
        if item_shop.isdigit():
            item_shop = int(item_shop)
            if item_shop < 3 and item_shop >= 0:
                if salary > shop_list[item_shop][1]:
                    shopping_list.append(shop_list[item_shop][0])
                    salary -= shop_list[item_shop][1]
                    print("The shop added int the shop car:%s" % shop_list[item_shop][0])
                    print("Ths remat salay:\033[31;1m%d\033[0m" % (salary))
                else:
                    print("Your remate is not full,please selecct other shop")
                    continue
            else:
                print("Your shop code invalid")
        elif item_shop == 'q':
            print("Shop bought as follw:")
            print("-----------------")
            for i in shopping_list:
                print(i)
            print("The remate salary:%s" % (salary))
            exit()
else:
    print("Your salary have problem ")