购物车

#!/usr/bin/env python
# -*- coding: utf-8 -*-
menu={
    ‘iphone‘:5000,
    ‘suoni‘:2000,
    ‘huawei‘:2500,
    ‘xiaomi‘:1500,
    ‘meizu‘:4500,
    ‘vivo‘:3500
}

shopping_cat=[]
salary=int(input(‘请输入工资：‘))
while True:
    for product, price in menu.items():
        print(‘商品：%s 价格：%s‘ % (product, price))
    choice=input(‘请输入您要选择的选择的商品名称或者exit退出：‘).strip()
    if choice==‘exit‘:break
    if choice not in menu:
        print(‘您选择的商品不存在‘)
        order=input(‘continue or exit:‘).strip()
        if order==‘exit‘:
            break
        else:
            continue

    if salary > menu[choice]:
        shopping_cat.append(choice)
        salary=salary-menu[choice]
        print(‘购物车：%s‘ %shopping_cat)
        print(‘余额：%s‘ %salary)

    else:
        balance=(menu[choice]-salary)
        print(‘您的余额不足，还差%s‘ %balance)
        pay_choice=input(‘请选择充值pay或exit‘).strip()
        if pay_choice==‘exit‘:
            break
        else:
            pay=int(input(‘请输入充值金额：‘))
            salary=salary+pay
            print(‘充值金额为：%s,现在余额为：%s‘ %(pay,salary))

        y_n=input(‘请选择继续购买shop或者退出exit:‘)
        if y_n==‘exit‘:
            break
        else:
            continue