python实现购物车功能

本文实例为大家分享了python实现购物车功能的具体代码，供大家参考，具体内容如下

功能要求：

要求用户输入总资产，例如：2000

显示商品列表，让用户根据序号选择商品，加入购物车

购买，如果商品总额大于总资产，提示账户余额不足，否则，购买成功。

附加：可充值、某商品移除购物车

代码：

#!/usr/bin/env python
# -*- coding:utf-8 -*-

shopping_list = [
    ("Iphone", 5000),
    ("Delicious food", 48),
    ("Mac book", 9800),
    ("Huawei", 4800),
    ("Alex python", 32),
    ("coffee", 24)
]
shopping_cart = []
salary = raw_input('please input salary: ')
if not salary.isdigit():
    print "salary must be digit,run again"
    exit()
else:
    salary = int(salary)

while True:
    print "------products list is--------"
    for index, item in enumerate(shopping_list):
        print "\033[32m%s, %s\033[0m" %(index, item)
    choice = raw_input('please input choice[q(uit)]>>> ')
    if choice.isdigit():
        choice = int(choice)
        if choice < len(shopping_list) and choice >= 0:
            product = shopping_list[choice]
            if salary > product[1]:
                confirm = raw_input('do you want to buy now[y/n]: ')
                if confirm == 'y':
                    shopping_cart.append(product)
                    salary -= product[1]
                    print "you bought %s,price is %d, your balance is %d" % (product[0], product[1], salary)
                else:
                    print 'select again'
            else:
                add_confirm = raw_input("your balance is: %d, not enough, do you want to add more?[y/n]" % salary)
                if add_confirm == 'y':
                    add_salary = raw_input('add the money: ')
                    if add_salary.isdigit():
                        add_salary = int(add_salary)
                        salary += add_salary
                        print "now balance is %d: " % salary
                    else:
                        print "the money must be digit."
                else:
                    print "------shopping cart list---------: "
                    for index, item in enumerate(shopping_cart):
             编程客栈           print index, item
        else:
            print 编程客栈"choice must be 0~5."
    elif choice == 'q':
        remove_product = raw_input("do you want remove product or exits now [y/n] ")
        if remove_product == "y":
            print "-----------your shopping cart lists-------------: "
            for index, item in enumerate(shopping_cart):
                print index, item
            remove_choice = raw_input('please input your remove choice>>> ')
            if remove_choice.isdigit() and int(remove_choice) < len(shopping_www.cppcns.comcart) and int(remove_choice) >= 0:
jeySX                salary += shopping_cart[int(remove_choice)][1]
                del shopping_cart[int(remove_choice)]
                print "-----------new shopping cart lists-------------: "
                for index, item in enumerate(shopping_cart):
           http://www.cppcns.com         print index, item
                print "your balance is %d" % salary
            else:
                print "input error, again"
        else:
            print "exit now"
            exit()

    else:
        print "-----------shopping cart lists-------------: "
        for index, item in enumerate(shopping_cart):
            print index, item
        print "\033[31mchoice must be digit,exit\033[0m"

功能挺简单，就是涉及到列表的增加和删除，还有一些逻辑的判断处理。

运行结果如下：

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