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Re: PyWart: Language missing maximum constant of numeric types!

References <8c2096d9-3cc2-4b64-8f11-c1d958d94243@x19g2000yqh.googlegroups.com> <4f48996b$0$6639$9b4e6d93@newsspool2.arcor-online.net> <mailman.159.1330192496.3037.python-list@python.org> <4f4a1df9$0$7609$9b4e6d93@newsspool1.arcor-online.net>
Date 2012-02-26 23:52 +1100
Subject Re: PyWart: Language missing maximum constant of numeric types!
From Chris Angelico <rosuav@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.177.1330260743.3037.python-list@python.org> (permalink)

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On Sun, Feb 26, 2012 at 10:56 PM, Wolfgang Meiners
<WolfgangMeiners01@web.de> wrote:
> That means:
> if maxlength and (len(string) <= maxlength):
>
> is equivalent to
> if (maxlength is not None) and (len(string) <= maxlength):

On the contrary, it means they are distinctly NOT equivalent. The
shorter form would treat a maximum length of 0 as meaning "unlimited".
Now, that's an understandable notation, but it's not what's given
here; if None means unlimited, then 0 should enforce that string ==
"".

ChrisA

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Thread

PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-24 05:37 -0800
  Re: PyWart: Language missing maximum constant of numeric types! Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-24 13:55 +0000
    Re: PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-24 06:14 -0800
  Re: PyWart: Language missing maximum constant of numeric types! Neil Cerutti <neilc@norwich.edu> - 2012-02-24 14:25 +0000
    Re: PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-24 07:25 -0800
    Re: PyWart: Language missing maximum constant of numeric types! Devin Jeanpierre <jeanpierreda@gmail.com> - 2012-02-24 12:32 -0500
    Re: PyWart: Language missing maximum constant of numeric types! Ian Kelly <ian.g.kelly@gmail.com> - 2012-02-24 18:26 -0700
  Re: PyWart: Language missing maximum constant of numeric types! Miki Tebeka <miki.tebeka@gmail.com> - 2012-02-24 06:39 -0800
    Re: PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-24 07:18 -0800
  Re: PyWart: Language missing maximum constant of numeric types! Mel Wilson <mwilson@the-wire.com> - 2012-02-24 10:21 -0500
    Re: PyWart: Language missing maximum constant of numeric types! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-24 15:31 +0000
    Re: PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-24 07:34 -0800
      Re: PyWart: Language missing maximum constant of numeric types! Michael Torrie <torriem@gmail.com> - 2012-02-24 09:23 -0700
        Re: PyWart: Language missing maximum constant of numeric types! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-24 22:45 +0000
      Re: PyWart: Language missing maximum constant of numeric types! Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-24 16:59 +0000
      Re: PyWart: Language missing maximum constant of numeric types! Michael Torrie <torriem@gmail.com> - 2012-02-24 16:16 -0700
      Re: PyWart: Language missing maximum constant of numeric types! Chris Angelico <rosuav@gmail.com> - 2012-02-25 11:09 +1100
      Re: PyWart: Language missing maximum constant of numeric types! Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-02-25 00:35 +0000
        Re: PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-25 12:25 -0800
      Re: PyWart: Language missing maximum constant of numeric types! MRAB <python@mrabarnett.plus.com> - 2012-02-25 00:37 +0000
      Re: PyWart: Language missing maximum constant of numeric types! Serhiy Storchaka <storchaka@gmail.com> - 2012-02-25 17:32 +0200
  Re: PyWart: Language missing maximum constant of numeric types! Fayaz Yusuf Khan <fayaz.yusuf.khan@gmail.com> - 2012-02-25 06:52 +0530
    Re: PyWart: Language missing maximum constant of numeric types! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-25 01:50 +0000
      Re: PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-25 12:29 -0800
        Re: PyWart: Language missing maximum constant of numeric types! alex23 <wuwei23@gmail.com> - 2012-02-26 18:32 -0800
          Re: PyWart: Language missing maximum constant of numeric types! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-27 03:51 +0000
            Re: PyWart: Language missing maximum constant of numeric types! Chris Angelico <rosuav@gmail.com> - 2012-02-27 14:59 +1100
            Re: PyWart: Language missing maximum constant of numeric types! alex23 <wuwei23@gmail.com> - 2012-02-26 22:49 -0800
  Re: PyWart: Language missing maximum constant of numeric types! Wolfgang Meiners <WolfgangMeiners01@web.de> - 2012-02-25 09:18 +0100
    Re: PyWart: Language missing maximum constant of numeric types! MRAB <python@mrabarnett.plus.com> - 2012-02-25 17:54 +0000
      Re: PyWart: Language missing maximum constant of numeric types! Rick Johnson <rantingrickjohnson@gmail.com> - 2012-02-25 12:35 -0800
        Re: PyWart: Language missing maximum constant of numeric types! Wolfgang Meiners <WolfgangMeiners01@web.de> - 2012-02-26 14:16 +0100
          Re: PyWart: Language missing maximum constant of numeric types! Wolfgang Meiners <WolfgangMeiners01@web.de> - 2012-02-26 14:38 +0100
            Re: PyWart: Language missing maximum constant of numeric types! Arnaud Delobelle <arnodel@gmail.com> - 2012-02-26 13:44 +0000
          Re: PyWart: Language missing maximum constant of numeric types! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-26 13:50 +0000
          Re: PyWart: Language missing maximum constant of numeric types! Neil Cerutti <neilc@norwich.edu> - 2012-02-27 12:25 +0000
        Re: PyWart: Language missing maximum constant of numeric types! Jean-Michel Pichavant <jeanmichel@sequans.com> - 2012-02-27 12:55 +0100
      Re: PyWart: Language missing maximum constant of numeric types! Wolfgang Meiners <WolfgangMeiners01@web.de> - 2012-02-26 12:56 +0100
        Re: PyWart: Language missing maximum constant of numeric types! Chris Angelico <rosuav@gmail.com> - 2012-02-26 23:52 +1100
          Re: PyWart: Language missing maximum constant of numeric types! Wolfgang Meiners <WolfgangMeiners01@web.de> - 2012-02-26 14:32 +0100
        Re: PyWart: Language missing maximum constant of numeric types! Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-02-26 13:19 +0000

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