Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed1a.news.xs4all.nl!xs4all!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 0.003 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'subject:not': 0.03; '(all': 0.07; 'none,': 0.07; 'matched': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:Why': 0.09; 'terminated': 0.09; 'def': 0.12; '[none,': 0.16; 'blocks': 0.16; 'combinations': 0.16; 'grp': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'header:User-Agent:1': 0.23; 'looks': 0.24; 'code:': 0.26; 'header:X-Complaints-To:1': 0.27; 'tried': 0.27; 'flags': 0.31; 'piece': 0.31; 'thanks!': 0.32; 'run': 0.32; 'skip:_ 10': 0.34; 'but': 0.35; 'subject:?': 0.36; 'should': 0.36; 'list': 0.37; 'ahead': 0.38; 'skip:[ 10': 0.38; 'to:addr:python-list': 0.38; 'skip:- 10': 0.38; 'to:addr:python.org': 0.39; 'skip:p 20': 0.39; 'received:org': 0.40; 'read': 0.60; 'completed': 0.61; 'first': 0.61; 'complete': 0.62; 'different': 0.65; 'yes': 0.68; 'containing': 0.69; 'florian': 0.84; 'regexp': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Florian Lindner Subject: Why is regexp not working? Date: Fri, 04 Jul 2014 14:27:12 +0200 Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: lapsgs09.informatik.uni-stuttgart.de User-Agent: KNode/4.13.2 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: 61 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1404476856 news.xs4all.nl 2969 [2001:888:2000:d::a6]:60943 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:73952 Hello, I have that piece of code: def _split_block(self, block): cre = [re.compile(r, flags = re.MULTILINE) for r in self.regexps] block = "".join(block) print(block) print("-------------------") for regexp in cre: match = regexp.match(block) for grp in regexp.groupindex: data = match.group(grp) if match else None self.data[grp].append(data) block is a list of strings, terminated by \n. self.regexps: self.regexps = [r"it (?P\d+) .* dt complete yes | write-iteration-checkpoint |", r"it (?P\d+) read ahead" If I run my program it looks like that: it 1 ahadf dt complete yes | write-iteration-checkpoint | Timestep completed ------------------- it 1 read ahead it 2 ahgsaf dt complete yes | write-iteration-checkpoint | Timestep completed ------------------- it 4 read ahead it 3 dfdsag dt complete yes | write-iteration-checkpoint | Timestep completed ------------------- it 9 read ahead it 4 dsfdd dt complete yes | write-iteration-checkpoint | Timestep completed ------------------- it 16 read ahead ------------------- {'it_read_ahead': [None, '1', '4', '9', '16'], 'coupling_iterations': ['1', None, None, None, None]} it_read_ahead is always matched when it should (all blocks but the first). But why is the regexp containing coupling_iterations only matched in the first block? I tried different combinations using re.match vs. re.search and with or without re.MULTILINE. Thanks! Florian