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Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ]

References <mailman.1603.1368401007.3114.python-list@python.org> <HP2kt.66723$Tl3.12499@fx29.fr7> <CAA=1kxSJXn1_Y=oy_oxvL+mUtsZvS+FGoy-vZ39OWpbwDF07dQ@mail.gmail.com> <51912C27.3020809@nedbatchelder.com>
Date 2013-05-14 04:15 +1000
Subject Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ]
From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.1640.1368468931.3114.python-list@python.org> (permalink)

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On Tue, May 14, 2013 at 4:08 AM, Ned Batchelder <ned@nedbatchelder.com> wrote:
>
> On 5/13/2013 1:26 PM, Fábio Santos wrote:
>
>
> On 13 May 2013 11:04, "Alister" <alister.ware@ntlworld.com> wrote:
>> this looks to me like an issue with operator precidence
>>
>> you code is evaluating as (Not x) == y
>> rather than not (x == y)
>
> I can say for sure that the precedence is as expected. I always use "not ...
> == ..." Instead of !=.
>
>
>
> If you don't mind my asking, why do you do that?

I think it's fairly obvious. Like the stumpy-tailed dog from "The
Loaded Dog" [1], he's saving up the != operator in case he needs it
later.

ChrisA

[1] Full text here. http://jendi.bowmeow.com.au/loadeddog1.html

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Differences of "!=" operator behavior in python3 and python2 [ bug? ] "Mr. Joe" <titanix88@gmail.com> - 2013-05-13 05:23 +0600
  Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Alister <alister.ware@ntlworld.com> - 2013-05-13 09:59 +0000
    Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Fábio Santos <fabiosantosart@gmail.com> - 2013-05-13 18:26 +0100
    Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Ned Batchelder <ned@nedbatchelder.com> - 2013-05-13 14:08 -0400
    Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Chris Angelico <rosuav@gmail.com> - 2013-05-14 04:15 +1000
    Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Fábio Santos <fabiosantosart@gmail.com> - 2013-05-13 19:28 +0100
      Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Alister <alister.ware@ntlworld.com> - 2013-05-13 21:17 +0000
        Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Fábio Santos <fabiosantosart@gmail.com> - 2013-05-13 22:48 +0100
        Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-05-13 23:53 +0100
        Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Dave Angel <davea@davea.name> - 2013-05-13 19:22 -0400
          Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-14 05:09 +0000
            Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-05-14 19:01 -0400
              Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-15 00:15 +0000
                Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-05-14 22:20 -0400
        Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Andrew Berg <bahamutzero8825@gmail.com> - 2013-05-13 18:27 -0500
        Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Ian Kelly <ian.g.kelly@gmail.com> - 2013-05-13 17:32 -0600
        Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-05-14 05:21 +0000
          Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Alister <alister.ware@ntlworld.com> - 2013-05-15 14:41 +0000
        Re: Differences of "!=" operator behavior in python3 and python2 [ bug? ] Chris Angelico <rosuav@gmail.com> - 2013-05-14 17:31 +1000

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