seems like a bug in isinstance()

[Ian Kelly]

On Fri, May 6, 2011 at 4:20 AM, dmitrey <dmitrey15 at gmail.com> wrote:
> Thanks Cris, however, I had understood reason of the bug and mere
> informed Python developers of the bug to fix it.

No you haven't.  Few if any Python developers make a habit of reading
this newsgroup.  To actually report the issue so that it might get
fixed, you need to add it to the issue tracker at
http://bugs.python.org

Anyway, I played around with this a little and was unable to reproduce
it, so I suspect the issue is actually a bit more complicated than
what Chris is describing.