[Python-Dev] Not-a-Number (original) (raw)

Greg Ewing greg.ewing at canterbury.ac.nz
Fri Apr 29 03🔞55 CEST 2011


Taking a step back from all this, why does Python allow NaNs to arise from computations at all?

+Inf and -Inf are arguably useful elements of the algebra, yet Python insists on raising an exception for 1.0./0.0 instead of returning an infinity.

Why do this but not raise an exception for any operation that produces a NaN?

-- Greg



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