1.开发一个购物车程序

要求：选定商品后需要减少相应的金额并将商品存入购物车

salary=input("卡内金额:")if salary.isdigit():    salary = int(salary)else:    print("请输入正确的数据类型")shop_list=[    ('苹果5S',4999),    ('美的空调',3000),    ('联想笔记本',6890),    ('小米电源',210),    ('乐视TV',5999),    ('华为荣耀8',3999),    ('荣耀7',2000),    ('苹果7PLUS',7000)]shop_car=[]tag=Falsewhile tag is not True:    #当循环遇到tag为True时停止循环    print("商品清单列表".center(50,'-'))    for item in enumerate(shop_list):        index=item[0]        i_name=item[1][0]        i_price=item[1][1]        print(index,i_name,i_price)    user_select=input("[q=quit,c=check] 输入你要购买的商品编号：")    if user_select.isdigit():         user_select = int(user_select)         if user_select < len(shop_list):             p_item=shop_list[user_select]             if p_item[1] <= salary:                 shop_car.append(p_item[0])                 salary -= p_item[1]                 print("购买了商品\033[41;1m%s\033[0m,剩余金额\033[32;1m %s\033[0m"%(p_item[0],salary))         else:             print("余额不足")    elif user_select == 'c' or user_select == 'check':        print("加入购物车的商品".center(50,'*'))        print(shop_car)    else:        print("不买了")        tag=True

 

测试运行：