day3-购物车小程序

---

 1.要求

• 启动程序后，让用户输入工资，然后打印商品列表
• 允许用户genuine商品编号购买商品
• 用户选择商品后，检测余额是否够，够就直接扣款，不够就提醒还有多少
• 可随时退出，退出时，打印已购买商品和余额

code：

#Author:Daniel
# -*- coding: utf-8 -*-
#time:2017.10.26-10:10
Commodity = [
    ('IPhone',6800),
    ('Samsung',7000),
    ('Huwei',10000),
    ('Mi',11000),
    ('vivo',12000),
    ('NOKIA',15000),
]
shopping_cart = []
salary = input('Please enter your salary:')
if salary.isdigit():
    salary = int(salary)
    while True:
        for index,Commodity_list in enumerate(Commodity):
            print(index,Commodity_list)
        user_choice = input('Please enter the commodity number')
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice < len(Commodity) and user_choice >= 0:
                Phone = Commodity[user_choice]
                if Phone[1] <= salary:
                    shopping_cart.append(Phone)
                    salary -= Phone[1]
                    print('33[31mThe %s has joined the shopping cart.Your balance is left %s33[0m' % (Phone,salary))
                else:
                    print('Your balance is left %s Unable to buy' % salary)
            else:
                print('The input commodity number does not.Please re-enter')
        elif user_choice == 'quit':
            print('------------------- shopping list -------------------')
            for shopping_cart_list in shopping_cart:
                print(shopping_cart_list)
            exit()
        else:
            print('Input error,Please re-enter')
else:
    print('The input error program has exited. Please re-enter it')

---