针对你提出的错误消息“AttributeError: 'function' object has no attribute 'sum'”,我将按照提供的tips进行分析和解答: 1. 分析错误消息 错误消息表明,你试图在一个函数对象上调用.sum()方法,但函数对象本身并没有这个方法。 2. 确定触发错误的代码部分 错误可能发生在类似以下的代码片段中: python def some_...
False if not. If this returns true,#it is still possible that a call fails, but if it is false, calling object will never succeed.#Note that classes are callable (calling a class returns a new instance);#instances are callable if their class has a _...
classAnimal(object):# 类属性name='动物'def__init__(self):# 实例属性self.age=1def__bug(self):"""实例私有方法"""print("我是动物类身上的私有方法:bug")defeat(self):"""实例方法"""print("我是实例方法,动物会吃哦～")@classmethoddefcall(cls):"""类方法"""print("我是类方法,动物会叫哦...
protected void Page_Load(object sender, EventArgs e) { AjaxPro.Utility.RegisterTypeForAjax(typeof(_Default)); } [AjaxPro.AjaxMethod] public bool GetLogin(string userId, string password) { Thread.Sleep(5000); return userId == "admin" && password == "admin"; } } } <?xml version="1.0"?