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Groups > comp.lang.python > #6628

Re: float("nan") in set or as key

From Chris Torek <nospam@torek.net>
Newsgroups comp.lang.python
Subject Re: float("nan") in set or as key
Date 2011-05-30 05:53 +0000
Organization None of the Above
Message-ID <irvbct030b9@news2.newsguy.com> (permalink)
References <271acea3-c38f-4123-9038-e348fb841971@glegroupsg2000goo.googlegroups.com> <4de31635$0$29990$c3e8da3$5496439d@news.astraweb.com> <irv6ev01jht@news1.newsguy.com>

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In article <irv6ev01jht@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
Salt Lake City, UT, USA (40°39.22'N, 111°50.29'W)  +1 801 277 2603
email: gmail (figure it out)      http://web.torek.net/torek/index.html

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Re: float("nan") in set or as key Carl Banks <pavlovevidence@gmail.com> - 2011-05-29 17:55 -0700
  Re: float("nan") in set or as key Chris Angelico <rosuav@gmail.com> - 2011-05-30 11:14 +1000
    Re: float("nan") in set or as key Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-30 04:15 +0000
      Re: float("nan") in set or as key John Nagle <nagle@animats.com> - 2011-05-29 21:25 -0700
      Re: float("nan") in set or as key Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-30 06:14 +0000
  Re: float("nan") in set or as key Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-30 03:59 +0000
    Re: float("nan") in set or as key Chris Torek <nospam@torek.net> - 2011-05-30 04:29 +0000
      Re: float("nan") in set or as key Chris Torek <nospam@torek.net> - 2011-05-30 05:53 +0000
      Re: float("nan") in set or as key Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-30 06:13 +0000
        Re: float("nan") in set or as key Chris Torek <nospam@torek.net> - 2011-05-30 19:58 +0000
          Re: float("nan") in set or as key Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-05-30 23:22 +0000

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