Message 264688 - Python tracker

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Author	xiang.zhang
Recipients	xiang.zhang
Date	2016-05-03.06:19:15
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1462256356.96.0.954300432794.issue26915@psf.upfronthosting.co.za>
In-reply-to

Content
__contains__ operation in ItemsView, ValuesView and Sequence in collections.abc simply test equality with ==. This introduces inconsistent behaviour with built-in containers when encountering objects like NaN, which does not equal to itself. I asked something about this on core-mentorship, see https://mail.python.org/mailman/private/core-mentorship/2016-April/003543.html.

__contains__ operation in ItemsView, ValuesView and Sequence in collections.abc simply test equality with ==. This introduces inconsistent behaviour with built-in containers when encountering objects like NaN, which does not equal to itself. I asked something about this on core-mentorship, see https://mail.python.org/mailman/private/core-mentorship/2016-April/003543.html.

History
Date	User	Action	Args
2016-05-03 06:19:17	xiang.zhang	set	recipients: + xiang.zhang
2016-05-03 06:19:16	xiang.zhang	set	messageid: <1462256356.96.0.954300432794.issue26915@psf.upfronthosting.co.za>
2016-05-03 06:19:16	xiang.zhang	link	issue26915 messages
2016-05-03 06:19:15	xiang.zhang	create