Message 160399 - Python tracker

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In-reply-to
Author	jamesh
Recipients	acooke, cvrebert, daniel.urban, eric.araujo, jamesh
Date	2012年05月11日.04:44:47
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1336711487.98.0.933182018634.issue12029@psf.upfronthosting.co.za>

Content
The documentation for ABCMeta.register() says that it makes the other class a "virtual subclass". That would make the ABC a "virtual base class". So whether the current behaviour is correct depends on whether you consider a "virtual base" to count as a base. From the reasoning behind the introduction of ABCs, it certainly sounds like it should count. Also, this is a feature that works correctly in Pyton 2.7, so could trip people up who are trying to move to Python 3.

Content

The documentation for ABCMeta.register() says that it makes the other class a "virtual subclass". That would make the ABC a "virtual base class".
So whether the current behaviour is correct depends on whether you consider a "virtual base" to count as a base. From the reasoning behind the introduction of ABCs, it certainly sounds like it should count.
Also, this is a feature that works correctly in Pyton 2.7, so could trip people up who are trying to move to Python 3.

History
Date	User	Action	Args
2012年05月11日 04:44:48	jamesh	set	recipients: + jamesh, acooke, eric.araujo, cvrebert, daniel.urban
2012年05月11日 04:44:47	jamesh	set	messageid: <1336711487.98.0.933182018634.issue12029@psf.upfronthosting.co.za>
2012年05月11日 04:44:47	jamesh	link	issue12029 messages
2012年05月11日 04:44:47	jamesh	create

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