NaN comparisons - Call For Anecdotes

Ian Kelly ian.g.kelly at
Tue Jul 8 21:50:06 CEST 2014

On Tue, Jul 8, 2014 at 1:16 PM, Ethan Furman <ethan at> wrote:
> What you said is: "They just don't appear in normal computation, because the
> interpreter raises an exception instead."
> I just ran a calculation that created a NaN, the same as 4 - 3 creates a 1,
> and no exception was raised.
> Do you have an example where one is?

The math module functions raise exceptions instead of returning NaN.

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