test for nan

From: John Hunter (jdhunter_at_ace.bsd.uchicago.edu)
Date: 03/30/04 

Date: Tue, 30 Mar 2004 14:24:57 -0600
To: python-list@python.org

I have a C extension module that is returning some doubles. When the
doubles get out of range, the numbers print as 'nan'.

Is there a better way to test for NaN than

   str(p1)=='nan'

where p1 is a float?

python2.3

Thanks,
John Hunter

Relevant Pages

  • Re: test for nan
    ... John Hunter wrote: ... > I have a C extension module that is returning some doubles. ... > doubles get out of range, the numbers print as 'nan'. ... Peter Maas, M+R Infosysteme, D-52070 Aachen, Hubert-Wienen-Str. ...
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