Message 133191 - Python tracker

Message133191

Author	ncoghlan
Recipients	Trundle, benjamin.peterson, daniel.urban, docs@python, eric.araujo, ncoghlan, pitrou, rhettinger
Date	2011-04-07.04:50:18
SpamBayes Score	1.7196074e-07
Marked as misclassified	No
Message-id	<1302151819.09.0.724675886969.issue10977@psf.upfronthosting.co.za>
In-reply-to

Content
I thought about a warning, but the problem is that a subclass using the concrete API as part of its implementation of the associated slot or method is actually perfectly correct usage. I'm not sure this is enough to give up on the idea of OrderedDict being a dict subclass implemented in C, though. It seems to me that some defensive internal checks (to pick up state corruption due to this problem) would be a lesser evil than giving up on being a dict subclass.

Content

I thought about a warning, but the problem is that a subclass using the concrete API as part of its *implementation* of the associated slot or method is actually perfectly correct usage.

I'm not sure this is enough to give up on the idea of OrderedDict being a dict subclass implemented in C, though. It seems to me that some defensive internal checks (to pick up state corruption due to this problem) would be a lesser evil than giving up on being a dict subclass.

History
Date	User	Action	Args
2011-04-07 04:50:19	ncoghlan	set	recipients: + ncoghlan, rhettinger, pitrou, benjamin.peterson, eric.araujo, Trundle, daniel.urban, docs@python
2011-04-07 04:50:19	ncoghlan	set	messageid: <1302151819.09.0.724675886969.issue10977@psf.upfronthosting.co.za>
2011-04-07 04:50:18	ncoghlan	link	issue10977 messages
2011-04-07 04:50:18	ncoghlan	create