python简单购物车

# Author:Zhu Jin Xin
product_list =[
    ("Airpos",1200),
    ("Beats",2500),
    ("Iphone7",4800),
    ("Iphone8",5800),
    ("IphoneX",9800),
    ("IphoneXS",10800)
]
shopping_list = []
salary = input("输入你的工资：")
if salary.isdigit():
    salary = int(salary)
    while True:
        for index,item in enumerate(product_list):
            print(index,item)
        user_choice =input("输入你想购买商品的编号，退出请按q：")
        if user_choice.isdigit():
            user_choice = int(user_choice)
            if user_choice<len(product_list) and user_choice>=0:
                p_item = product_list[user_choice]
                if p_item[1]<=salary:
                    salary -=p_item[1]
                    shopping_list.append(p_item)
                    print("购买%s成功,余额为:\033[31;1m%s\033[0m"%(p_item,salary))
                else:
                    print("\033[31;1m你的余额只剩%s啦\033[0m"%salary)
            else:
                print("\033[31;1m你输入的%s号商品不存在，请重新选择\033[0m"%user_choice)
        elif user_choice =="q":
            print("--------shopping list--------")
            for p in shopping_list:
                print(p)
                print("你的余额为:",salary)
                exit()
        else:
            print("无效输入，请重新输入")
else:
    print("工资格式错误，必须为数字请重新输入")
    import hhhe