[Python-Dev] more on pickling

[Christian Tismer]

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

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