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


Groups > comp.lang.python > #38164

Re: LBYL vs EAFP

Path csiph.com!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!cs.uu.nl!news.stack.nl!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <ian.g.kelly@gmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.080
X-Spam-Evidence '*H*': 0.84; '*S*': 0.00; 'exception': 0.03; 'exception,': 0.09; 'propagate': 0.09; 'tends': 0.09; 'advocating': 0.16; 'mon,': 0.16; 'wrote:': 0.17; 'feb': 0.19; 'exceptions': 0.22; 'seems': 0.23; 'header:In-Reply-To:1': 0.25; 'message-id:@mail.gmail.com': 0.27; "d'aprano": 0.29; 'steven': 0.29; 'e.g.': 0.30; 'up.': 0.31; 'raising': 0.33; 'to:addr:python- list': 0.33; 'likely': 0.33; 'agree': 0.34; 'received:google.com': 0.34; 'returning': 0.35; 'said,': 0.35; 'pm,': 0.35; 'received:209.85.220': 0.35; 'received:209.85': 0.35; 'something': 0.35; 'rather': 0.37; 'received:209': 0.37; 'far': 0.37; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; "you've": 0.61; 'bring': 0.62; 'more': 0.63; 'making': 0.64; '2013': 0.84; 'crowd': 0.84; 'to:name:python': 0.84; 'mistake': 0.91; 'prone': 0.91
DKIM-Signature v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:mime-version:in-reply-to:references:from:date:message-id :subject:to:content-type; bh=mWbH958thiENOnAfD3LZvEQqvwD/LoBnVpTqyLUN8P8=; b=sO4QQccc/LYoZctp/vIME7HvuKg1216ZgHUoKrXZoAJFYTVZrC8pWtjtVY7ojYOnLy OLD7j682wzGzgL3HYCJoKUythOwBLbtvqV4bbK505nc8DtJBHYRIKaLUOTS6TYwdE3i3 cke+aW/5xPRDvC38cYXzeJWLmDJX90/Enf+A1dPEA9gsu39yKgrBXr0XxhqG1CIQy+Tj 2ERKc/ZX1Al1zucfyOe4heyRob2qiSXy2U2eiPyQiC3Lb0ueyWRRNwdHK+XPEqu7Kb5e Oeb+C988K0loJSBcmUkkqLyOW+sfkVoUuzLqO//62qfzc/AzjYX8y5QTyo2EBM98fJ3N U9zg==
X-Received by 10.66.83.165 with SMTP id r5mr61050161pay.3.1360042884513; Mon, 04 Feb 2013 21:41:24 -0800 (PST)
MIME-Version 1.0
In-Reply-To <51109001$0$21856$c3e8da3$76491128@news.astraweb.com>
References <5110415c$0$29986$c3e8da3$5496439d@news.astraweb.com> <mailman.1339.1360021575.2939.python-list@python.org> <51109001$0$21856$c3e8da3$76491128@news.astraweb.com>
From Ian Kelly <ian.g.kelly@gmail.com>
Date Mon, 4 Feb 2013 22:40:54 -0700
Subject Re: LBYL vs EAFP
To Python <python-list@python.org>
Content-Type text/plain; charset=ISO-8859-1
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.15
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.1351.1360042892.2939.python-list@python.org> (permalink)
Lines 13
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1360042892 news.xs4all.nl 6891 [2001:888:2000:d::a6]:47525
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:38164

Show key headers only | View raw


On Mon, Feb 4, 2013 at 9:52 PM, Steven D'Aprano
<steve+comp.lang.python@pearwood.info> wrote:
> You seem to be making the
> classic mistake of thinking that exceptions are something to avoid:

Far from it.  You've extrapolated a lot more than what I actually
said, and I completely agree with everything you wrote.  I was
explaining EAFP as I see it, not advocating it for all circumstances.

Although since you bring it up, I find that the LBYL crowd tends to be
more prone to exception avoidance, e.g. returning None on a failure
rather than raising an exception, whereas the EAFP crowd seems more
likely to just let the original exception propagate up.

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


Thread

LBYL vs EAFP Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-05 10:16 +1100
  Re: LBYL vs EAFP Chris Angelico <rosuav@gmail.com> - 2013-02-05 10:38 +1100
    Re: LBYL vs EAFP Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-05 03:52 +0000
      Re: LBYL vs EAFP Chris Angelico <rosuav@gmail.com> - 2013-02-05 16:19 +1100
  Re: LBYL vs EAFP Ian Kelly <ian.g.kelly@gmail.com> - 2013-02-04 16:46 -0700
    Re: LBYL vs EAFP Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-05 04:52 +0000
      Re: LBYL vs EAFP Chris Angelico <rosuav@gmail.com> - 2013-02-05 16:20 +1100
        Re: LBYL vs EAFP Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-05 06:31 +0000
          Re: LBYL vs EAFP Pete Forman <petef4+usenet@gmail.com> - 2013-02-05 09:49 +0000
            Re: LBYL vs EAFP Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-02-05 23:04 +1100
              Re: LBYL vs EAFP Chris Angelico <rosuav@gmail.com> - 2013-02-05 23:25 +1100
      Re: LBYL vs EAFP Ian Kelly <ian.g.kelly@gmail.com> - 2013-02-04 22:40 -0700
  Re: LBYL vs EAFP Dave Angel <davea@davea.name> - 2013-02-04 18:55 -0500
  Re: LBYL vs EAFP Chris Angelico <rosuav@gmail.com> - 2013-02-05 11:45 +1100
  Re: LBYL vs EAFP Ethan Furman <ethan@stoneleaf.us> - 2013-02-04 16:26 -0800
  Re: LBYL vs EAFP Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2013-02-05 01:00 +0000
  Re: LBYL vs EAFP Terry Reedy <tjreedy@udel.edu> - 2013-02-05 02:53 -0500

csiph-web