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

Guido van Rossum guido at python.org
Tue Mar 23 21:19:14 CET 2010

On Tue, Mar 23, 2010 at 10:55 AM, Mark Dickinson <dickinsm at gmail.com> wrote:

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.

Raymond and I don't see this the same way. It looks like he won. :-)

-- --Guido van Rossum (python.org/~guido)

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