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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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Xref: csiph.com comp.lang.python:21860

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