如何从AttributeError Python提取属性名称

发布于 2025-02-10 04:25:29 字数 309 浏览 3 评论 0原文

我将从AttributeError提取名称。我有：

x = 10

try:
    x.append(20)
except AttributeError as e:
    print(f"name of Atrribute is: {e}")

结果：

name of Atrribute is: 'int' object has no attribute 'append'

我需要“附加”，谢谢！

原文

i have would to extract name from AttributeError.
i have:

x = 10

try:
    x.append(20)
except AttributeError as e:
    print(f"name of Atrribute is: {e}")

And result:

name of Atrribute is: 'int' object has no attribute 'append'

I need 'append', Thanks!

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糖粟与秋泊 2025-02-17 04:25:29

对于python＆gt; = 3.10，attributeError的实例具有name obj obj attribute：

>>> try:
...     'spam'.ham
... except AttributeError as e:
...     print(f'{e.name=}; {e.obj=}')
... 
e.name='ham'; e.obj=spam

但是< /strong>如果您手动提高attributeError，则其name和obj将为none，

以防万一您要提高attributeError自己，您可以设置name和obj手动，例如

class Readonly:
    def __setattr__(self, name, _=None):
        e = AttributeError(f'{type(self).__name__} instance is readonly')
        try:
            e.name, e.obj = name, self
            raise e from None
        finally:
            del e

    __delattr__ = __setattr__

For python >= 3.10, instances of AttributeError have a name and obj attribute:

>>> try:
...     'spam'.ham
... except AttributeError as e:
...     print(f'{e.name=}; {e.obj=}')
... 
e.name='ham'; e.obj=spam

But if you manually raise AttributeError, its name and obj will be None

In case you want to raise an AttributeError yourself, you can set the name and obj manually, e.g.

class Readonly:
    def __setattr__(self, name, _=None):
        e = AttributeError(f'{type(self).__name__} instance is readonly')
        try:
            e.name, e.obj = name, self
            raise e from None
        finally:
            del e

    __delattr__ = __setattr__

回复收藏 0 原文

当梦初醒 2025-02-17 04:25:29

您可以在空间上将消息拆分并取最后一个元素。然后从此元素中剥离'。

x = 10

try:
    x.append(20)
except AttributeError as e:
    attribute_name = str(e).split()[-1].strip("'")
    print(f"name of Atrribute is: {attribute_name}")

输出为trribute的名称为：Append。

请注意，如果Python决定在以后的版本中传达更改的消息，这可能会破裂。

You can split the message at the spaces and take the last element. Then strip the ' from this element.

x = 10

try:
    x.append(20)
except AttributeError as e:
    attribute_name = str(e).split()[-1].strip("'")
    print(f"name of Atrribute is: {attribute_name}")

The output is name of Atrribute is: append.

Be aware that this might break if Python decides to deliver a changed message in future versions.

回复收藏 0 原文

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