Message 59675 - Python tracker

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Author	dmaurer
Recipients	dmaurer
Date	2008-01-10.17:39:23
SpamBayes Score	0.0189716
Marked as misclassified	No
Message-id	<1199986772.67.0.313630472197.issue1785@psf.upfronthosting.co.za>
In-reply-to

Content
The inspect functions "getmembers(cls)" and "classify_class_attrs(cls)" require that for a class cls each name in "dir(cls)" can be retrieved by "getattr(cls, name)". While this holds for usual class attributes, it may well fail for descriptors (descriptors set by 'zope.interface' are a real world example for this). Attached it as small script that demonstrates the problem. The bug affects 'pydoc' and the built in 'help' (which is in fact 'pydoc.help'). While 'pydoc' and 'help' do not break completely, they can not present meaningful information for classes with some descriptors

The inspect functions "getmembers(cls)" and "classify_class_attrs(cls)"
require that for a class *cls* each name in "dir(cls)" can be retrieved
by "getattr(cls, name)". While this holds for usual class attributes, it
may well fail for descriptors (descriptors set by 'zope.interface' are a
real world example for this). Attached it as small script that
demonstrates the problem.

The bug affects 'pydoc' and the built in 'help' (which is in fact
'pydoc.help'). While 'pydoc' and 'help' do not break completely, they
can not present meaningful information for classes with some descriptors

History
Date	User	Action	Args
2008-01-10 17:39:33	dmaurer	set	spambayes_score: 0.0189716 -> 0.0189716 recipients: + dmaurer
2008-01-10 17:39:32	dmaurer	set	spambayes_score: 0.0189716 -> 0.0189716 messageid: <1199986772.67.0.313630472197.issue1785@psf.upfronthosting.co.za>
2008-01-10 17:39:24	dmaurer	link	issue1785 messages
2008-01-10 17:39:23	dmaurer	create