为什么会出现AttributeError:'NoneType'对象没有属性'something'? [英] Why do I get AttributeError: 'NoneType' object has no attribute 'something'?

问题描述

我不断收到错误消息

AttributeError: 'NoneType' object has no attribute 'something'

我的代码太长了，无法在此处发布.什么一般情况会导致此AttributeError，什么是NoneType意味着什么，以及如何缩小正在发生的情况?

The code I have is too long to post here. What general scenarios would cause this AttributeError, what is NoneType supposed to mean and how can I narrow down what's going on?

推荐答案

NoneType意味着您实际上得到了None，而不是您认为正在使用的任何类或对象的实例.这通常意味着在上面的赋值或函数调用失败或返回了意外结果.

NoneType means that instead of an instance of whatever Class or Object you think you're working with, you've actually got None. That usually means that an assignment or function call up above failed or returned an unexpected result.

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