Message11732

Author	jeff.allen
Recipients	jaraco, jeff.allen, zyasoft
Date	2018-03-02.08:10:21
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1519978222.84.0.467229070634.issue2581@psf.upfronthosting.co.za>
In-reply-to

Content
>>> OtherNamespace.Y == Y True Oops. The problem is PyClass.__cmp__. We definitely want == (and !=) to be based on object identity, but it's not obvious what < should be. We can't have a<b and b<a both false and yet not have a==b which would be so if we still based it on name. If I've understood CPython correctly it compares by memory address. Not sure this is a showstopper for 2.7.2 but leaving it so marked.

>>> OtherNamespace.Y == Y
True

Oops. The problem is PyClass.__cmp__.

We definitely want == (and !=) to be based on object identity, but it's not obvious what < should be. We can't have a<b and b<a both false and yet not have a==b which would be so if we still based it on name. If I've understood CPython correctly it compares by memory address.

Not sure this is a showstopper for 2.7.2 but leaving it so marked.

History
Date	User	Action	Args
2018-03-02 08:10:22	jeff.allen	set	messageid: <1519978222.84.0.467229070634.issue2581@psf.upfronthosting.co.za>
2018-03-02 08:10:22	jeff.allen	set	recipients: + jeff.allen, jaraco, zyasoft
2018-03-02 08:10:22	jeff.allen	link	issue2581 messages
2018-03-02 08:10:21	jeff.allen	create