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Re: Arithmetic with Boolean values

References <58f60e60-1dc1-4265-a601-693d11b4bcec@googlegroups.com> <CAPTjJmp9rxwCxS5eeLq54N-csd6MyshCqSEqAjoUrzuj0XUOBg@mail.gmail.com> <k06t79$53g$1@dough.gmane.org>
Date 2012-08-12 10:31 +1000
Subject Re: Arithmetic with Boolean values
From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.3201.1344731485.4697.python-list@python.org> (permalink)

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On Sun, Aug 12, 2012 at 10:25 AM, Terry Reedy <tjreedy@udel.edu> wrote:
> On 8/11/2012 7:13 PM, Chris Angelico wrote:
>> This appears to be a limitation of the parser; it's trying to
>> interpret "not" as a binary operator.
>
> I think not. It is lower precedence than all arithmetic operators.
> (We humans see that that is impossible and
> may boost the precedence in context.)

Ah, I stand corrected. And once again, I kinda expected Python to
follow the rules of my mental parser :)

Anyway, point stands that parens will fix the issue.

ChrisA

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Thread

Arithmetic with Boolean values John Ladasky <john_ladasky@sbcglobal.net> - 2012-08-11 15:30 -0700
  Re: Arithmetic with Boolean values Chris Angelico <rosuav@gmail.com> - 2012-08-12 09:13 +1000
  Re: Arithmetic with Boolean values Chris Rebert <clp2@rebertia.com> - 2012-08-11 16:53 -0700
  Re: Arithmetic with Boolean values Terry Reedy <tjreedy@udel.edu> - 2012-08-11 20:25 -0400
  Re: Arithmetic with Boolean values Chris Angelico <rosuav@gmail.com> - 2012-08-12 10:31 +1000
  Re: Arithmetic with Boolean values MRAB <python@mrabarnett.plus.com> - 2012-08-12 01:36 +0100
  Re: Arithmetic with Boolean values Paul Rubin <no.email@nospam.invalid> - 2012-08-11 17:54 -0700
    Re: Arithmetic with Boolean values Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-12 11:22 +0000
      Re: Arithmetic with Boolean values Roy Smith <roy@panix.com> - 2012-08-12 07:40 -0400
        Re: Arithmetic with Boolean values Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-08-12 14:06 +0000
          Re: Arithmetic with Boolean values Paul Rubin <no.email@nospam.invalid> - 2012-08-12 09:59 -0700
            Re: Arithmetic with Boolean values Bernd Nawothnig <Bernd.Nawothnig@t-online.de> - 2012-08-12 19:21 +0200
            Re: Arithmetic with Boolean values Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-08-12 19:20 +0100
              Re: Arithmetic with Boolean values Roy Smith <roy@panix.com> - 2012-08-12 14:45 -0400
              Re: Arithmetic with Boolean values Alister <alister.ware@ntlworld.com> - 2012-08-12 20:13 +0000
                Re: Arithmetic with Boolean values Gene Heskett <gheskett@wdtv.com> - 2012-08-12 20:29 -0400
                Re: Arithmetic with Boolean values Hans Mulder <hansmu@xs4all.nl> - 2012-08-14 18:32 +0200

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