On Wed, Mar 24, 2010 at 6:21 PM, Raymond Hettinger
<raymond.hettinger at gmail.com> wrote:
..
> If we want to be able to reason about our programs,
> then we need to rely on equality relations being
> reflexsive, symmetric, and transitive. Otherwise,
> containers and functions can't even make minimal
> guarantees about what they do.
+1
> .. We should probably draw the
> line at well-defined numeric contexts such as the decimal module
> and stop trying to propagate NaN awareness throughout the
> entire object model.
I am not sure what this means in practical terms. Should
float('nan') == float('nan') return True or should float('nan') raise
an exception to begin with? I would prefer the former.
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