python实际练习1——简单购物车

#Author:Wildwolf
#-*- coding:utf-8 -*-

#可以用index确定下标
#本例中是静态的，用list固定了产品种类，没有想到用下标的形式选择商品
#自己增加了可选择购买物品数量的功能

import sys

alterlist = [‘欢迎光临‘, [1, ‘MG元祖高达‘, 150], [2,‘MG独角兽一号机‘, 230], [3, ‘MG报丧女妖‘, 220], [4, ‘MG沙扎比‘, 430],
           [5, ‘MG精神力感知扎古‘, 420], [6, ‘MG红异端‘, 255]]
shoplist = []
list = [‘1‘, ‘2‘, ‘3‘, ‘4‘, ‘5‘, ‘6‘]
salary = input("请输入您的工资：")
while True:
    salarylast = salary
    for i in alterlist:
        print(i)
    print(‘如果您想退出,请输入"q"或按任意键继续‘)
    getpass = input()
    while getpass == ‘q‘:
        print("您所购商品为:-----shopping list-----")
        for i in shoplist:
            print(i)
        print("您的余额为:\033[31;1m%s\033[0m" % salarylast)
        print("谢谢惠顾！")
        sys.exit(0)
    else:
        print("请按提示输入：")
        getpass2 = input("请输入您要购买的商品编号：")
        if getpass2 not in list:
            print("输入错误，请重新输入")
            continue
        else:
            select = int(getpass2)
            if select > 6:
                print("没有对应的商品，请重新输入：")
            else:
                if int(salary) > int(alterlist[select][2]):
                    number = input("请输入您要购买的数量：")
                    if number not in list:
                        print("输入错误，请重新输入")
                    else:
                        salary = (int(salary) - int(alterlist[select][2])*int(number))
                        shoplist.append([alterlist[select], number])
                        print("商品已放入购物车,您的余额为\033[31;1m%s\033[0m" % salary)
                else:
                    print("您的余额不足")

#-*- coding:utf-8 -*-

print("欢迎光临！")
alter_list = [(‘MG元祖高达‘, 150),
              (‘MG独角兽一号机‘, 230),
              (‘MG报丧女妖‘, 220),
              (‘MG沙扎比‘, 430),
              (‘MG精神力感知扎古‘, 420),
              (‘MG红异端‘, 255)]
shoplist = []

salary = input("输入你的工资:")
if salary.isdigit():   #判断是否字符串是否由数字构成
    salary = int(salary)   #转换成整数类型
    while True:
        for index, item in enumerate(alter_list):   #print(product_list.index(item),item)
            print(index, item)
        user_choice = input("请输入您要购买的商品编号:")
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice < len(alter_list) and user_choice >=0: #列表的长度
                p_item = alter_list[user_choice]
                if p_item[1] <= salary:
                    alter_list.append(p_item)
                    salary -= p_item[1]
                    print("将 %s 添加至您的购物车，您的余额为 \033[31;1m%s\033[0m" % (p_item, salary))
                else:
                    print("\033[41;1m你的余额为[%s]\033[0m" % salary)  #输出余额
            else:
                print("商品编号 [%s] 不存在!" % user_choice)
        elif user_choice == ‘q‘:
            print("--------shopping list------")
            for p in alter_list:
                print(p)
            print("您的余额为:", salary)
            print("谢谢惠顾！")
            exit()
        else:
            print("输入错误")