Raymond Hettinger <rhettin...@users.sourceforge.net> added the comment:

Recommend closing this.  We like to have eval(repr(obj))==obj where
possible but it is not a strict requirement.  Am opposed to the two
proposed solutions (float attributes or new literals).  Mark's solution
of defining nan=float('nan') whereever you care about it seems like a
reasonable workaround.

IMO, the special case code we've already added to support NaNs and Infs
has already far exceeded their worth in real-world use cases.  No need
to further muddy the waters when simple workarounds exist.

----------
nosy: +rhettinger

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<http://bugs.python.org/issue1732212>
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