本文实例为大家分享了程序：Python购物车程序，具体内容如下

需求：

• 启动程序后，让用户输入工资，然后打印商品列表
• 允许用户根据商品编号购买商品
• 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
• 可随时退出，退出时，打印已购买商品和余额
• 如余额不足，可充值

代码：

#coding=utf-8#Version:python 3.6.0#Tools:Pycharm 2017.3.2_date_ = '2018/4/16/016 14:50'_author_ = 'Hongyong'salary = int(input("Please input your salary: "))shoppingmart = []items = (["1","Huawei","￥",2800], ["2","Earphone","￥",300], ["3","Book","￥",80])msg_items = '''----------items----------1. Huawei ￥ 28002. Earphone ￥ 3003. Book ￥ 80-------------------------'''print(msg_items)while True: shopindex = int(input("Please choose goods: ")) if salary > items[shopindex-1][3]: shoppingmart.append(items[shopindex-1]) salary -= int(items[shopindex-1][3]) print("You have bought {name} !".format(name = items[shopindex-1][1])) print("Your balance is: ￥",salary) decision = input("Do you want to quit now?") print(msg_items) else: print("Your balance is not enough! Please try sth else.") recharge_ans = input("Do you want to recharge?") if recharge_ans == "y": recharge = int(input("Please input money: ")) print("Please wait for a while...") salary += recharge print("You have recharged successfully!") print("And the balance is: ",salary,"now!") decision = input("Do you want to quit now?") print(msg_items) if decision == "q": break else: continueprint("You have bought: ",shoppingmart)print("Your balance is: ￥",salary)print("Welcome your next coming!")

程序效果：

Please input your salary: 0 ----------items----------1. Huawei ￥ 28002. Earphone ￥ 3003. Book ￥ 80------------------------- Please choose goods: 1Your balance is not enough! Please try sth else.Do you want to recharge?yPlease input money: 30000Please wait for a while...You have recharged successfully!And the balance is: 30000 now!Do you want to quit now? ----------items----------1. Huawei ￥ 28002. Earphone ￥ 3003. Book ￥ 80------------------------- Please choose goods: 1You have bought Huawei !Your balance is: ￥ 27200Do you want to quit now? ----------items----------1. Huawei ￥ 28002. Earphone ￥ 3003. Book ￥ 80------------------------- Please choose goods: 2You have bought Earphone !Your balance is: ￥ 26900Do you want to quit now?q ----------items----------1. Huawei ￥ 28002. Earphone ￥ 3003. Book ￥ 80------------------------- You have bought: [['1', 'Huawei', '￥', 2800], ['2', 'Earphone', '￥', 300]]Your balance is: ￥ 26900Welcome your next coming!

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。