Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!us.feeder.erje.net!feeder.erje.net!eu.feeder.erje.net!eweka.nl!lightspeed.eweka.nl!193.141.40.65.MISMATCH!npeer.de.kpn-eurorings.net!npeer-ng0.de.kpn-eurorings.net!news.tele.dk!news.tele.dk!small.news.tele.dk!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.004 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'subject:text': 0.05; 'subject:file': 0.07; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:using': 0.09; "wouldn't": 0.14; 'finney': 0.16; 'machine?': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'roy': 0.16; ':-)': 0.16; 'wrote:': 0.18; 'implementing': 0.19; 'machine': 0.22; 'saying': 0.22; 'header:User-Agent:1': 0.23; 'instead.': 0.24; 'interpret': 0.24; 'task': 0.26; 'header:X-Complaints-To:1': 0.27; "i'm": 0.30; 'easier': 0.31; 'really,': 0.31; 'writes:': 0.31; 'implemented': 0.33; 'subject:from': 0.34; 'but': 0.35; 'really': 0.36; 'words,': 0.36; 'so,': 0.37; 'implement': 0.38; 'ben': 0.38; 'to:addr :python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; "you'll": 0.62; 'address': 0.63; 'smith': 0.68; 'day': 0.76; 'article': 0.77; 'brain,': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Ben Finney Subject: Re: Parsing multiple lines from text file using regex Date: Mon, 28 Oct 2013 10:34:55 +1100 References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Gmane-NNTP-Posting-Host: rasputin.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-gpg.asc X-Post-From: Ben Finney User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.4 (gnu/linux) Cancel-Lock: sha1:jrN3oZpdyDyE0Si9QHIRRYNzckw= X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 23 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1382917205 news.xs4all.nl 15867 [2001:888:2000:d::a6]:54857 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:57775 Roy Smith writes: > In article , > "Rhodri James" wrote: > > > I really, really wouldn't do this with a single regexp. You'll get a much > > easier to understand program if you implement a small state machine > > instead. > > And what is a regex if not a small state machine? Regex is not a state machine implemented by the original poster :-) Or, in other words, I interpret Rhodri as saying that the right way to do this is by implementing a *different* small state machine, which will address the task better than the small state machine of regex. -- \ “Pinky, are you pondering what I'm pondering?” “I think so, | `\ Brain, but three round meals a day wouldn't be as hard to | _o__) swallow.” —_Pinky and The Brain_ | Ben Finney