购物车程序

Python3 购物车程序

#!/usr/bin/evn python
# -*- coding:utf-8 -*-
# Author:huanu

'''
程序：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，检测余额是否足够，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
'''

product_list = [
    ('Iphone',5800),
    ('Mac Pro',9800),
    ('Bike', 800),
    ('Watch', 106000),
    ('Coffee', 31),
    ('Alex Python', 120),
]
shopping_list=[]
salary = input("Input your salary:")
if salary.isdigit():
    salary = int(salary)
    while True:
        for index,item in enumerate(product_list):
            #print(product_list.index(item),item)
            print(index,item)
        user_choice =input("选择要买嘛？>>>:")
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice < len(product_list) and user_choice >= 0:
                p_item = product_list[user_choice]
                if p_item[1] <= salary: #买得起
                    shopping_list.append(p_item)
                    salary -= p_item[1]

                    print("Added %s into shopping cart,your current balance is \033[31;1m%s\033[0m " %(p_item,salary))

                else:
                    print("\033[41;1m 你的余额只剩[%s]啦，你还买个毛线啊 \033[0m" % salary)
            else:
                print("product code [%s] is not exit!" % user_choice)
        elif user_choice == 'q':
            print("------shopping list-------")
            for p in shopping_list:
                print(p)
            print("Your current balance:",salary)
            exit()
        else:
            print("invalid opthion")
else:
    print("您输入的不是数字")