[Python-Dev] Mixing float and Decimal -- thread reboot (original) (raw)

Mark Dickinson dickinsm at gmail.com
Tue Mar 23 19:55:36 CET 2010

On Tue, Mar 23, 2010 at 6:07 PM, Adam Olsen <rhamph at gmail.com> wrote:

On Tue, Mar 23, 2010 at 12:04, Mark Dickinson <dickinsm at gmail.com> wrote:

Note that containment tests check identity before equality, so there's no problem with putting (float) nans in sets or dicts:

x = float('nan') s = {x} x in s True Ergh, I thought that got changed.  Nevermind then.

Hmm. I think you're right: it did get changed at some point early in py3k's history; I seem to recall that the identity-checking behaviour got restored before 3.1 was released, though. There was an issue about this somewhere, but I'm failing to find it.

Mark

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