#11753: Q objects using callables won't combine in 2.4
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Reporter: alexr | Owner:
Status: new | Milestone:
Component: Database layer (models, ORM) | Version: 1.1
Resolution: | Keywords: Q, mq
Stage: Accepted | Has_patch: 1
Needs_docs: 0 | Needs_tests: 0
Needs_better_patch: 0 |
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Comment (by jdunck):
jezdez asked the same question. :-)
{{{
r42573 | guido.van.rossum | 2006-02-25 16:38:04 -0600 (Sat, 25 Feb 2006) |
8 lines
- Patch 1433928:
- The copy module now "copies" function objects (as atomic objects).
- dict.__getitem__ now looks for a __missing__ hook before raising
KeyError.
- Added a new type, defaultdict, to the collections module.
This uses the new __missing__ hook behavior added to dict (see above).
}}}
Basically, it fixes the problem by adding the type to an internal data
structure.
{{{
33121 loewis d[types.BuiltinFunctionType] = _deepcopy_atomic
42573 guido.van.rossum d[types.FunctionType] = _deepcopy_atomic
}}}
"d" there is an alias for copy._deepcopy_dispatch.
I considered poking a value in there, but thought it was a bit
presumptuous. Since you're asking about it, lemme see if just poking it
in there actually fixes the problem.
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Ticket URL: <http://code.djangoproject.com/ticket/11753#comment:13>
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