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


Groups > comp.lang.python > #86548

Re: Python Worst Practices

Path csiph.com!usenet.pasdenom.info!news.redatomik.org!newsfeed.xs4all.nl!newsfeed3a.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <python-python-list@m.gmane.org>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.003
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'true,': 0.05; 'subject:Python': 0.06; 'deny': 0.07; '*is*': 0.09; 'acceptance': 0.09; 'false.': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'finney': 0.16; 'processes.': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; '\xe2\x80\x9cprogram': 0.16; 'wrote:': 0.18; 'machine': 0.22; 'programming': 0.22; 'header:User-Agent:1': 0.23; 'error': 0.23; 'right.': 0.26; 'values': 0.27; 'header:X-Complaints-To:1': 0.27; 'testing': 0.29; "i'm": 0.30; 'too.': 0.31; 'writes:': 0.31; 'community': 0.33; 'running': 0.33; 'but': 0.35; 'ben': 0.38; 'to:addr:python-list': 0.38; 'rather': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'commands': 0.60; 'tell': 0.60; 'effective': 0.61; 'success': 0.61; 'show': 0.63; '2015': 0.84; 'borrow': 0.84; 'received:125': 0.84; 'subject:Practices': 0.84
X-Injected-Via-Gmane http://gmane.org/
To python-list@python.org
From Ben Finney <ben+python@benfinney.id.au>
Subject Re: Python Worst Practices
Date Fri, 27 Feb 2015 08:23:34 +1100
References <mclca6$iie$1@ger.gmane.org> <CAPTjJmppMhBuLy=LMC=ycN0RYE9Jp8BVZbdSeqBZupd_7Nwxfw@mail.gmail.com> <85bnkh5z96.fsf@benfinney.id.au> <CAPTjJmrySN-tpcyXON4v_Ux0E961DYZqc5kF116sTLp_-RetqQ@mail.gmail.com> <85zj814jmb.fsf@benfinney.id.au> <1103e6a0-2183-4641-bf98-2927806c2172@email.android.com>
Mime-Version 1.0
Content-Type text/plain; charset=utf-8
Content-Transfer-Encoding 8bit
X-Gmane-NNTP-Posting-Host jigong.madmonks.org
X-Public-Key-ID 0xAC128405
X-Public-Key-Fingerprint 517C F14B B2F3 98B0 CB35 4855 B8B2 4C06 AC12 8405
X-Public-Key-URL http://www.benfinney.id.au/contact/bfinney-pubkey.asc
X-Post-From Ben Finney <bignose+hates-spam@benfinney.id.au>
User-Agent Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux)
Cancel-Lock sha1:MYRFM6BfmKTWEdTQKZh8mIhQqbk=
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 <https://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 <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups comp.lang.python
Message-ID <mailman.19292.1424985803.18130.python-list@python.org> (permalink)
Lines 26
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1424985803 news.xs4all.nl 2879 [2001:888:2000:d::a6]:47517
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:86548

Show key headers only | View raw


Simon Ward <simon+python@bleah.co.uk> writes:

> On 26 February 2015 00:11:24 GMT+00:00, Ben Finney <ben+python@benfinney.id.au> wrote:
> >You'd better borrow the time machine and tell the creators of Unix. The
> >meme is already established for decades now.
>
> 0 = success and non-zero = failure is the meme established, rather
> than 0 = true, non-zero = false.

That is not the case: the commands ‘true’ (returns value 0) and ‘false’
(returns value 1) are long established in Unix. So that *is* part of the
meme I'm describing.

> None of the above is a good reason to use error *or* success return
> values in Python--use exceptions!--but may be encountered when running
> other processes.

Right. But likewise, don't deny that “true == 0” and “false == non-zero”
has a wide acceptance in the programming community too.

-- 
 \            “Program testing can be a very effective way to show the |
  `\        presence of bugs, but is hopelessly inadequate for showing |
_o__)                              their absence.” —Edsger W. Dijkstra |
Ben Finney

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


Thread

Re: Python Worst Practices Ben Finney <ben+python@benfinney.id.au> - 2015-02-27 08:23 +1100

csiph-web