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Groups > comp.lang.python > #37072
| Date | 2013-01-18 07:29 -0500 |
|---|---|
| From | Dave Angel <d@davea.name> |
| Subject | Re: Any built-in ishashable method ? |
| References | <kdbb94$hqa$1@ger.gmane.org> <627444785.6706139.1358510169194.JavaMail.root@sequans.com> <kdbdr4$7fl$1@ger.gmane.org> |
| Newsgroups | comp.lang.python |
| Message-ID | <mailman.681.1358584747.2939.python-list@python.org> (permalink) |
On 01/18/2013 07:06 AM, Peter Otten wrote: > Jean-Michel Pichavant wrote: > >> That brings me to another question, is there any valid test case where >> key1 != key2 and hash(key1) == hash(key2) ? Or is it some kind of design >> flaw ? > > I don't think there is a use case for such a behaviour other than annoying > your collegues ;) > Beg to differ. Nothing wrong with getting the same hash on objects that compare different. It's called a hash collision, and is quite common, especially in large collections. The problem is the converse of this, where the objects compare equal, but they have different hashes. -- DaveA
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Re: Any built-in ishashable method ? Dave Angel <d@davea.name> - 2013-01-18 07:29 -0500
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