Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.python > #3017

Re: Feature suggestion -- return if true

Path csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!feeder.news-service.com!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path <rosuav@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.111
X-Spam-Level *
X-Spam-Evidence '*H*': 0.78; '*S*': 0.00; 'equivalent.': 0.09; 'terminate': 0.09; 'pm,': 0.11; 'wrote:': 0.14; 'expr': 0.16; 'none"': 0.16; 'otherwise,': 0.20; 'tue,': 0.20; 'header:In-Reply- To:1': 0.22; 'jason': 0.22; 'subject: -- ': 0.25; 'chris': 0.27; 'function': 0.27; 'message-id:@mail.gmail.com': 0.28; 'hey': 0.29; 'argue': 0.31; 'second': 0.31; 'to:addr:python-list': 0.32; 'point': 0.35; 'function.': 0.35; 'none': 0.36; 'received:209.85': 0.37; 'apr': 0.38; 'received:google.com': 0.38; 'but': 0.38; 'to:addr:python.org': 0.39; 'received:209': 0.39; 'would': 0.40; 'header:Received:5': 0.40; '2011': 0.62; 'said:': 0.68; '12:18': 0.84; '12:20': 0.84; '5.\xa0': 0.84; 'death!': 0.84; 'received:209.85.210.174': 0.84; 'received:mail- iy0-f174.google.com': 0.84
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type:content-transfer-encoding; bh=wrA5ruC1xuAZyj0V5uJpp97N43H1ESVz00W7IcHA83I=; b=MvcMKyoemSN9VParv5QMZXRyhFtaKIu1yNRQlz6Fxg1zc7S8X2QgaWIEKBL7taIQ// M975oQGlEJGeCs6Ng+WNrX7V+SwptP0Dy2ZUOZ0am5ZvYc8YE8weUMoQdd9IVQyeG2vK KNvMsxfEEaTMqoBJt8BrIaq+/3GCq/r0tiUvM=
DomainKey-Signature a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=qFAx4hsg8gRdVjuX2ytYrhNgiqgJqud1z87s8dL9YYSeGhjaCHHiAv6okesMqnGYNh 1827uyniooQfMd5wWLKSoRUEhia5tLP0kdy2d0d2dkY0h1Mr2AfDjlP7wAZSiPuHt1Pu SOvpxMWEiTQSKE9MawP22KZO/fwAtm03MBcME=
MIME-Version 1.0
In-Reply-To <BANLkTikvHLhzDJq==_y2L4QZy=FePr7apA@mail.gmail.com>
References <8abff237-5ccd-4eb6-85c8-cdc9e87520b7@bl1g2000vbb.googlegroups.com> <mailman.233.1302568099.9059.python-list@python.org> <io0apf$2os$1@reader1.panix.com> <BANLkTikLxhshYfANu+cGO6hO00DMPw9P0w@mail.gmail.com> <BANLkTim+JcVt3iT6Xw4XwnvCX-Rirw9rog@mail.gmail.com> <BANLkTikvHLhzDJq==_y2L4QZy=FePr7apA@mail.gmail.com>
Date Tue, 12 Apr 2011 12:44:19 +1000
Subject Re: Feature suggestion -- return if true
From Chris Angelico <rosuav@gmail.com>
To python-list@python.org
Content-Type text/plain; charset=ISO-8859-1
Content-Transfer-Encoding quoted-printable
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.12
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive <http://mail.python.org/pipermail/python-list>
List-Post <mailto:python-list@python.org>
List-Help <mailto:python-list-request@python.org?subject=help>
List-Subscribe <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.240.1302576261.9059.python-list@python.org> (permalink)
Lines 18
NNTP-Posting-Host 82.94.164.166
X-Trace 1302576262 news.xs4all.nl 81474 [::ffff:82.94.164.166]:58100
X-Complaints-To abuse@xs4all.nl
Xref x330-a1.tempe.blueboxinc.net comp.lang.python:3017

Show key headers only | View raw

On Tue, Apr 12, 2011 at 12:20 PM, James Mills
<prologic@shortcircuit.net.au> wrote:
> On Tue, Apr 12, 2011 at 12:18 PM, Jason Swails <jason.swails@gmail.com> wrote:
>> This is only true if n < 5.  Otherwise, the first returns None and the
>> second returns False.
>
> Which is why I said:
>
> return expr or None
>
> But hey let's argue the point to death!

That's still not equivalent. "return expr or None" will always
terminate the function. The OP's request was for something which would
terminate the function if and only if expr is non-false.

Chris Angelico

Back to comp.lang.python | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Feature suggestion -- return if true zildjohn01 <zildjohn01@gmail.com> - 2011-04-11 16:17 -0700
  Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-12 10:27 +1000
    Re: Feature suggestion -- return if true Grant Edwards <invalid@invalid.invalid> - 2011-04-12 01:44 +0000
      Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-12 12:12 +1000
        Re: Feature suggestion -- return if true Grant Edwards <invalid@invalid.invalid> - 2011-04-12 02:18 +0000
          Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-12 12:44 +1000
            Re: Feature suggestion -- return if true Grant Edwards <invalid@invalid.invalid> - 2011-04-12 13:42 +0000
            Re: Feature suggestion -- return if true "Martin v. Loewis" <martin@v.loewis.de> - 2011-04-17 12:03 +0200
              Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-18 09:36 +1000
      Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-12 12:20 +1000
      Re: Feature suggestion -- return if true Zero Piraeus <schesis@gmail.com> - 2011-04-11 22:43 -0400
      Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-12 12:44 +1000
      Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-12 12:49 +1000
      Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-12 12:59 +1000
      Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-12 13:01 +1000
        Re: Feature suggestion -- return if true Nobody <nobody@nowhere.com> - 2011-04-12 07:08 +0100
          Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-12 16:21 +1000
            Re: Feature suggestion -- return if true Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-04-12 10:52 +0000
            Re: Feature suggestion -- return if true scattered <tooscattered@gmail.com> - 2011-04-12 03:55 -0700
              Re: Feature suggestion -- return if true "Colin J. Williams" <cjw@ncf.ca> - 2011-04-12 10:01 -0400
            Re: Feature suggestion -- return if true Grant Edwards <invalid@invalid.invalid> - 2011-04-12 13:50 +0000
        Re: Feature suggestion -- return if true Grant Edwards <invalid@invalid.invalid> - 2011-04-12 13:44 +0000
      Re: Feature suggestion -- return if true Westley Martínez <anikom15@gmail.com> - 2011-04-12 07:05 -0700
        Re: Feature suggestion -- return if true scattered <tooscattered@gmail.com> - 2011-04-12 07:58 -0700
          Re: Feature suggestion -- return if true Westley Martínez <anikom15@gmail.com> - 2011-04-12 15:45 -0700
          Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-13 08:52 +1000
        Re: Feature suggestion -- return if true zildjohn01 <zildjohn01@gmail.com> - 2011-04-12 11:25 -0700
          Re: Feature suggestion -- return if true Terry Reedy <tjreedy@udel.edu> - 2011-04-12 15:14 -0400
          Re: Feature suggestion -- return if true alex23 <wuwei23@gmail.com> - 2011-04-12 21:05 -0700
    Re: Feature suggestion -- return if true Teemu Likonen <tlikonen@iki.fi> - 2011-04-12 21:00 +0300
      Re: Feature suggestion -- return if true Ian Kelly <ian.g.kelly@gmail.com> - 2011-04-12 12:25 -0600
        Re: Feature suggestion -- return if true Neil Cerutti <neilc@norwich.edu> - 2011-04-12 20:13 +0000
          Re: Feature suggestion -- return if true Neil Cerutti <neilc@norwich.edu> - 2011-04-12 20:16 +0000
      Re: Feature suggestion -- return if true Ian Kelly <ian.g.kelly@gmail.com> - 2011-04-12 12:29 -0600
      Re: Feature suggestion -- return if true Paul Rudin <paul.nospam@rudin.co.uk> - 2011-04-12 19:28 +0100
      Re: Feature suggestion -- return if true Chris Rebert <clp2@rebertia.com> - 2011-04-12 13:26 -0700
      Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-13 08:34 +1000
      Re: Feature suggestion -- return if true Ethan Furman <ethan@stoneleaf.us> - 2011-04-12 16:06 -0700
        Re: Feature suggestion -- return if true Thomas Rachel <nutznetz-0c1b6768-bfa9-48d5-a470-7603bd3aa915@spamschutz.glglgl.de> - 2011-04-21 12:13 +0200
      Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-13 09:12 +1000
      Re: Feature suggestion -- return if true Westley Martínez <anikom15@gmail.com> - 2011-04-12 16:15 -0700
      Re: Feature suggestion -- return if true Ethan Furman <ethan@stoneleaf.us> - 2011-04-12 16:48 -0700
        Re: Feature suggestion -- return if true Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-04-13 00:03 +0000
          Re: Feature suggestion -- return if true Ethan Furman <ethan@stoneleaf.us> - 2011-04-12 19:42 -0700
          Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-13 13:00 +1000
          Re: Feature suggestion -- return if true James Mills <prologic@shortcircuit.net.au> - 2011-04-13 13:28 +1000
      Re: Feature suggestion -- return if true Teemu Likonen <tlikonen@iki.fi> - 2011-04-13 13:58 +0300
  Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-12 10:46 +1000
    Re: Feature suggestion -- return if true Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-04-17 16:21 +1200
      Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-17 14:31 +1000
      Re: Feature suggestion -- return if true Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-04-17 08:45 +0000
        Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-17 19:07 +1000
          Re: Feature suggestion -- return if true Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-04-17 15:23 +0000
        Re: Feature suggestion -- return if true Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-04-18 12:25 +1200
        Re: Feature suggestion -- return if true Dave Angel <davea@ieee.org> - 2011-04-17 22:04 -0400
        Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-18 12:10 +1000
          Re: Feature suggestion -- return if true Gregory Ewing <greg.ewing@canterbury.ac.nz> - 2011-04-19 12:35 +1200
            Re: Feature suggestion -- return if true Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2011-04-19 09:42 +0300
              Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-19 17:01 +1000
      Re: Feature suggestion -- return if true "D'Arcy J.M. Cain" <darcy@druid.net> - 2011-04-17 08:33 -0400
        Re: Feature suggestion -- return if true Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2011-04-17 15:10 +0000
        Re: Feature suggestion -- return if true aahz@pythoncraft.com (Aahz) - 2011-04-18 09:11 -0700
      Re: Feature suggestion -- return if true Greg Ewing <greg.ewing@canterbury.ac.nz> - 2011-04-18 11:09 +1200
  Re: Feature suggestion -- return if true Chris Angelico <rosuav@gmail.com> - 2011-04-12 10:51 +1000
  Re: Feature suggestion -- return if true Paul Rubin <no.email@nospam.invalid> - 2011-04-11 23:58 -0700
    Re: Feature suggestion -- return if true John Roth <johnroth1@gmail.com> - 2011-04-12 06:16 -0700
    Re: Feature suggestion -- return if true Mel <mwilson@the-wire.com> - 2011-04-12 11:12 -0400

csiph-web