Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!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 0.038 X-Spam-Evidence: '*H*': 0.93; '*S*': 0.00; 'example:': 0.03; 'occasionally': 0.09; "person's": 0.09; 'subject:number': 0.09; 'subject:using': 0.09; 'appreciated!': 0.16; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'message-id:@mrabarnett.plus.com': 0.16; 'wrote:': 0.18; 'variable': 0.18; 'appears': 0.22; 'header:User- Agent:1': 0.23; 'header:In-Reply-To:1': 0.27; 'lines': 0.31; 'extract': 0.31; 'file': 0.32; 'front': 0.32; 'text': 0.33; 'but': 0.35; 'searching': 0.37; 'subject:New': 0.37; 'to:addr:python- list': 0.38; 'to:addr:python.org': 0.39; 'how': 0.40; 'length': 0.61; 'numbers': 0.61; 'name': 0.63; 'such': 0.63; 'header:Reply- To:1': 0.67; 'reply-to:no real name:2**0': 0.71; 'reply- to:addr:python.org': 0.84; 'subject:Search': 0.84; 'subject:before': 0.84; 'captain': 0.91 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.1 cv=bKAvfpOZ c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=0Bzu9jTXAAAA:8 a=2LCq-pQfA8cA:10 a=AM20Y-Ap3XkA:10 a=ihvODaAuJD4A:10 a=OUOv7kDek9cA:10 a=8nJEP1OIZ-IA:10 a=EBOSESyhAAAA:8 a=8AHkEIZyAAAA:8 a=NNgP-Q8nmkIA:10 a=pt4bou3kO6IrVr-QssAA:9 a=rbhMW3G-lv9FDUCy:21 a=IdU6qSbWeBOVxwQ9:21 a=wPNLvfGTeEIA:10 X-AUTH: mrabarnett:2500 Date: Fri, 01 Nov 2013 21:40:17 +0000 From: MRAB User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: python-list@python.org Subject: Re: New to using re. Search for a number before a string. References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list Reply-To: python-list@python.org 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: 10 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1383342016 news.xs4all.nl 15869 [2001:888:2000:d::a6]:41464 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:58292 On 01/11/2013 21:33, Captain Dunsel wrote: > I have a text file that has lines with numbers occasionally appearing right before a person's name. For example: > > COLLEGE:ENROLLMENT:COMPLETED EVALUATIONS:624309FUDD, ELMER > > where I want to search for the name "ELMER FUDD" and extract the number right in front of it "608309" when such a number appears but the length of the number is variable and using ?<= in a regular expression will only search for a fixed length. > > Any ideas appreciated! > How about searching with a pattern like r':(\d*)FUDD, ELMER'.