Python实现简易购物车(未完结)

待我称王封你为后i 2021-11-23 05:12 255阅读 0赞

使用Python完成购物车功能
    需求:
    　　1.让用户输入金额
    　　2.选择要购买的商品,加入购物车
    　　3.当商品的总价超过了你的金额,提示余额不足
    　　4.让用户输入N结算,输入Q退出

goods = [ { 'name':'电脑','price':1999}, { 'name':'鼠标','price':15}, { 'name':'键盘','price':30}, { 'name':'硬盘','price':399}, { 'name':'内存','price':489}, ] fei_yong = 0 shop_car = {}   # 键 == 列表的索引,值 == 商品数量
    money = input("请输入你的金额:") if money.isdigit(): # 真钱
        while 1: for i in range(len(goods)): print(i+1,goods[i]["name"],goods[i]["price"]) # ===================商品展示============================
            choose = input("请输入您要购买的商品(输入n或者N结算,输入q或者Q退出):") if choose.isdigit() and 0 < int(choose) <= len(goods): # 让用户输入商品序号并判断是不是数字以及在不在正常输入范围内
                int_index = int(choose) - 1
                # 通过用户输入的内容减一,获取到goods的索引
                if shop_car.get(int_index) == None: shop_car[int_index] = 1
                else: shop_car[int_index] += 1
    
                # ================让用户把商品加入到购物车中====================
            elif choose.upper() == "N": # 结算
                for f in shop_car: fei_yong = fei_yong + shop_car[f] * goods[f]["price"] if int(money) - fei_yong >= 0: for k in shop_car: print(f'您购买的商品是{goods[k]["name"]},单价{goods[k]["price"]},数量{shop_car[k]}') else: print("余额不足") # for i,v in enumerate(shop_car,1): # 枚举
                    # print(f'序号:{i},商品:{goods[v]["name"]},数量:{shop_car[v]}')
                    #                 # str_del = int(input("请删除商品对应的序号:"))
                    # shop_car[str_del - 1] = shop_car[str_del - 1] - 1
                    # if shop_car[str_del - 1] == 0:
                    # shop_car.pop(str_del - 1)
    
            elif choose.upper() == "Q": # 退出
                print(f"您此次共消费{fei_yong},剩余余额{int(money) - fei_yong}") break
            else: print("输入有误,请重新输入!") else: # 输入非数字
        print("请正确输入!")

实现了简易功能,其余功能慢慢完善

转载于:https://www.cnblogs.com/shagudi/p/10952283.html