float("nan") in set or as key

[Chris Torek]

In article <irv6ev01jht at news1.newsguy.com> I wrote, in part:
>    _inf = float("inf")
>    def isinf(x):
>        return x == _inf
>    del _inf

Oops, take out the del, or otherwise fix the obvious problem,
e.g., perhaps:

    def isinf(x):
        return x == isinf._inf
    isinf._inf = float("inf")

(Of course, if something like this were adopted properly, it would
all be in the base "float" type anyway.)
-- 
In-Real-Life: Chris Torek, Wind River Systems
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