[Python-Dev] more on pickling

Christian Tismer tismer at tismer.com
Tue Nov 18 21:09:46 EST 2003

Martin v. Löwis wrote:

> Christian Tismer <tismer at tismer.com> writes:
>>So I have the impression these methods loose their
>>relationship to their originating object.
>>Is this behavior by intent, i.e. is it impossible to write
>>a working __reduce__ method for a bound class method?
> I don't think it is impossible; see also python.org/sf/558238 
> However, I would make pickling of bound methods "built-in", i.e. by
> pickle explicitly recognizing bound methods, or using copy_reg, as
> Konrad suggests.

Oh, I see.
My strategy was to avoid copy_reg at all, and to make everything
using C constructs from the beginning.
Maybe this was not so efficient.
I agree (and have checked) that Konrad's solution works.
Maybe I should go that way.
On the other hand, I don't agree that it should be impossible with
the __reduce__ protocol. There is possible some construct
missing, which allows to ask the object machinery the right question.

ciao - chris

Christian Tismer             :^)   <mailto:tismer at tismer.com>
Mission Impossible 5oftware  :     Have a break! Take a ride on Python's
Johannes-Niemeyer-Weg 9a     :    *Starship* http://starship.python.net/
14109 Berlin                 :     PGP key -> http://wwwkeys.pgp.net/
work +49 30 89 09 53 34  home +49 30 802 86 56  mobile +49 173 24 18 776
PGP 0x57F3BF04       9064 F4E1 D754 C2FF 1619  305B C09C 5A3B 57F3 BF04
      whom do you want to sponsor today?   http://www.stackless.com/

More information about the Python-Dev mailing list