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Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X?

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From Ian Kelly <ian.g.kelly@gmail.com>
Date Sun, 18 Mar 2012 10:14:12 -0600
Subject Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X?
To Cosmia Luna <cosmius@gmail.com>
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On Sun, Mar 18, 2012 at 3:42 AM, Cosmia Luna <cosmius@gmail.com> wrote:
> But it seems that the last line(#ref2) in the Py2Type.__init__ does not work at
> all.

I'm not sure what you're expecting it to do, but type.__init__ does
not actually do anything

> It seems really weird, 'type' is an instance of 'type' itself, I'm not sure
> if I'm calling the unbound method __init__ or bound method __init__.

type.__init__ is never bound.

> It seems type.__new__ calls type.__init__ before it calls Py2Type.__init__,
> because dict_ is already copied to cls.__dict__ at line(#ref3).

No, type.__new__ does not call type.__init__ at all.  Rather, it is
type.__new__ that is responsible for copying the dict, not
type.__init__.  For this reason you should override type.__new__ in
your metaclass, not type.__init__.

Cheers,
Ian

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Thread

How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-16 22:30 -0700
  Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Chris Rebert <clp2@rebertia.com> - 2012-03-16 22:51 -0700
  Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Richard Thomas <chardster@gmail.com> - 2012-03-17 00:34 -0700
    Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-17 01:11 -0700
  Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Peter Otten <__peter__@web.de> - 2012-03-17 10:25 +0100
    Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-17 03:04 -0700
      Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-17 05:21 -0700
        Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-18 02:42 -0700
        Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-18 02:42 -0700
          Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Ian Kelly <ian.g.kelly@gmail.com> - 2012-03-18 10:14 -0600
      Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-17 05:21 -0700
    Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Cosmia Luna <cosmius@gmail.com> - 2012-03-17 03:04 -0700
  Re: How to get a reference of the 'owner' class to which a method belongs in Python 3.X? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-03-17 10:01 +0000

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