[Zope-dev] Re: Acquisition in Python2.5

[Tres Seaver]

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Tres Seaver wrote:
> Hanno Schlichting wrote:
> 
>> Two wrappers compare equal, so the code comparing an AQ wrapper with
>> something different should be the one with the problem. I'd look into
>> Wrapper_compare in _Acquisition.c.
> 
> Under 2.5, that function isn't even called during the test.  QED.

Crap.  The Python maintainers decided to disallow heteragenous
comparisons in C code:

 - http://mail.python.org/pipermail/patches/2004-December/016607.html

which led to:

 -
http://svn.python.org/view/python/trunk/Objects/object.c?r1=37435&r2=38113


It looks as though the only way out is to implement rich comparison
semantics (Python's 'do_cmp' prefers 'tp_richcompare' to 'tp_compare').



Tres.
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Tres Seaver          +1 540-429-0999          tseaver at palladion.com
Palladion Software   "Excellence by Design"    http://palladion.com
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