Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed2.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 0.012 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'expressions': 0.07; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'contribute': 0.11; '(sorry,': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'subject:expression': 0.16; 'subject:regular': 0.16; 'wrote:': 0.18; 'header:User-Agent:1': 0.23; 'parse': 0.24; 'values': 0.27; 'header:X-Complaints-To:1': 0.27; "doesn't": 0.30; 'easy,': 0.31; 'extract': 0.31; 'idea,': 0.31; 'regular': 0.32; 'subject:from': 0.34; "can't": 0.35; 'something': 0.35; 'there': 0.35; 'e.g.': 0.38; 'to:addr:python- list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'even': 0.60; 'expression': 0.60; 'first': 0.61; 'subject:Get': 0.68; 'default': 0.69; 'florian': 0.84; 'subject:groups': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Re: Get named groups from a regular expression Date: Tue, 01 Jul 2014 17:29:17 +0200 Organization: None References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p57bda5aa.dip0.t-ipconnect.de User-Agent: KNode/4.11.5 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: 16 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1404228575 news.xs4all.nl 2892 [2001:888:2000:d::a6]:35936 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:73794 Florian Lindner wrote: > Is there a way I can extract the named groups from a regular expression? > e.g. given "(?P\d)" I want to get something like ["testgrp"]. Easy, just write a regular expression to parse regular expressions ;) (Sorry, I can't contribute something constructive, my first idea, re.DEBUG doesn't help) > OR > > Can I make the match object to return default values for named groups, > even if no match was produced?