Re: Making Classes Subclassable

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From	Ian Kelly <ian.g.kelly@gmail.com>
Newsgroups	comp.lang.python
Subject	Re: Making Classes Subclassable
Date	Tue, 5 Jul 2016 08:41:44 -0600
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On Tue, Jul 5, 2016 at 2:31 AM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
> On Monday 04 July 2016 18:34, Lawrence D’Oliveiro wrote:
>
>> On Monday, July 4, 2016 at 7:58:07 PM UTC+12, dieter wrote:
>>> --> "type(obj)" or "obj.__class__" (there are small differences)
>>> give you the type/class of "obj".
>>
>> When would it not be the same?
>
>
> class X(object):
>     def __getattribute__(self, name):
>         if __name__ == '__class__':
>             return int
>         return super().__getattribute__(name)

Did you actually test that?

py> class X(object):
...     def __getattribute__(self, name):
...         if __name__ == '__class__':
...             return int
...         return super().__getattribute__(name)
...
py> x = X()
py> x.__class__
<class '__main__.X'>

Certain attributes like __class__ and __dict__ are special.

Thread

Making Classes Subclassable Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-02 21:31 -0700
  Re: Making Classes Subclassable dieter <dieter@handshake.de> - 2016-07-04 09:57 +0200
    Re: Making Classes Subclassable Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-04 01:34 -0700
      Re: Making Classes Subclassable Michael Selik <michael.selik@gmail.com> - 2016-07-05 05:26 +0000
        Re: Making Classes Subclassable Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-05 00:08 -0700
      Re: Making Classes Subclassable dieter <dieter@handshake.de> - 2016-07-05 09:55 +0200
      Re: Making Classes Subclassable Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2016-07-05 18:31 +1000
        Re: Making Classes Subclassable Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-05 08:41 -0600
          Re: Making Classes Subclassable Steven D'Aprano <steve@pearwood.info> - 2016-07-06 01:33 +1000
      Re: Making Classes Subclassable Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-05 09:02 -0600
        Re: Making Classes Subclassable Steven D'Aprano <steve@pearwood.info> - 2016-07-06 01:41 +1000
        Re: Making Classes Subclassable Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-05 19:31 -0700
    Re: Making Classes Subclassable Lawrence D’Oliveiro <lawrencedo99@gmail.com> - 2016-07-05 20:04 -0700
  Re: Making Classes Subclassable Ian Kelly <ian.g.kelly@gmail.com> - 2016-07-05 08:52 -0600

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