Message 81307 - Python tracker

Message81307

Author	jcea
Recipients	chemacortes, jcea, mark.dickinson, pitrou, rhettinger
Date	2009-02-06.22:09:16
SpamBayes Score	9.95287e-06
Marked as misclassified	No
Message-id	<1233958162.22.0.388795047901.issue5169@psf.upfronthosting.co.za>
In-reply-to

Content
The issue is trivially reproductible in any 32 bits platform, simply allocating objects until you go up the 2GB mark. Since __hash__() wants to take advantage of every bit in a 32 bit platform, and we don't have unsigned integers in python, I vote for "invalid" too. There is no promise of "id(obj)==hash(obj)": you can overload "__hash__()" anytime, and that is already done for strings, integers, tuples, etc. The speed advantage is interesting, though.

Content

The issue is trivially reproductible in any 32 bits platform, simply
allocating objects until you go up the 2GB mark.

Since __hash__() wants to take advantage of every bit in a 32 bit
platform, and we don't have unsigned integers in python, I vote for
"invalid" too.

There is no promise of "id(obj)==hash(obj)": you can overload
"__hash__()" anytime, and that is already done for strings, integers,
tuples, etc.

The speed advantage is interesting, though.

History
Date	User	Action	Args
2009-02-06 22:09:33	jcea	set	recipients: + jcea, rhettinger, chemacortes, mark.dickinson, pitrou
2009-02-06 22:09:22	jcea	set	messageid: <1233958162.22.0.388795047901.issue5169@psf.upfronthosting.co.za>
2009-02-06 22:09:20	jcea	link	issue5169 messages
2009-02-06 22:09:17	jcea	create