Two day—购物车

product_list = [
    ("Aphone", 5000),
    ("Watch",1000),
    ("Book", 100),
    ("Food", 50),
]
shopping_list = []
salary = input("Input of your salary:")
if salary.isdigit():
    salary = int(salary)
    while True:
        for index ,item in enumerate(product_list):
            print(index ,item)
        user_choice = input(">>>> 你选物品")
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice <len(product_list) and user_choice >= 0:
                choice_list = product_list[user_choice]
                if choice_list[1] <= salary:
                    shopping_list.append(choice_list)
                    salary -= choice_list[1]
                    print("恭喜你获得 %s ,你的余额为 \033[31;1m %s\033[0m" %(choice_list , salary) )
                else:
                    print("\033[41;1m 你的余额不足，请充值，谢谢！\033[0m")
            else:
                print("你选择的%s不在列表里"%(user_choice))
        elif user_choice == "Q":
            print("shopping_list")
            for p in shopping_list:
                print(p)
            print("你剩余余额：\033[32;1m %s\033[0m"%(salary))
            exit()
        else:
            print("你的输入有误！")