[Python-Dev] Why is nan != nan?

[Mark Dickinson]

On Wed, Mar 24, 2010 at 10:52 PM, Alexander Belopolsky
<alexander.belopolsky at gmail.com> wrote:
> On Wed, Mar 24, 2010 at 6:47 PM, Mark Dickinson <dickinsm at gmail.com> wrote:
> ..
>> There's no ideal solution here;  IMO, the compromise that currently
>> exists is an acceptable one.
>
> I don't see a compromise.   So far I failed to find a use case that
> benefits from NaN violating reflexivity.
>

So if I understand correctly, you propose that float('nan') ==
float('nan') return True.  Would you also suggest extending this
behaviour to Decimal nans?