Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed4a.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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'tutorial': 0.03; 'mrab': 0.05; 'say,': 0.05; 'correct.': 0.07; 'matches': 0.07; 'reason,': 0.07; 'report.': 0.07; "subject:' ": 0.07; 'string': 0.09; 'character,': 0.09; 'correct,': 0.09; 'locale': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'specified,': 0.09; 'subject:Why': 0.09; 'wrong,': 0.09; 'bug': 0.12; 'character:': 0.16; 'enough.': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'set,': 0.16; 'subject: \n ': 0.16; 'url:html)': 0.16; 'url:re': 0.16; 'whitespace.': 0.16; 'thursday,': 0.16; ':-)': 0.16; 'wrote:': 0.18; 'starts': 0.20; 'example': 0.22; 'header:User-Agent:1': 0.23; 'closely': 0.24; 'space.': 0.24; 'unicode': 0.24; 'equivalent': 0.26; 'second': 0.26; 'header:X-Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'am,': 0.29; 'character': 0.29; 'properties': 0.29; 'characters': 0.30; 'matching': 0.30; 'url:python': 0.33; 'could': 0.34; 'there': 0.35; 'i.e.': 0.36; 'set.': 0.36; "didn't": 0.36; 'shows': 0.36; 'thanks': 0.36; 'url:org': 0.36; 'url:library': 0.38; 'whatever': 0.38; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'either': 0.39; 'received:org': 0.40; 'space': 0.40; 'strictly': 0.61; 'first': 0.61; 'information': 0.63; 'july': 0.63; 'link:': 0.72; 'url:htm': 0.73; 'actually,': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Ned Batchelder Subject: Re: Why is it different about '\s' Matches whitespace and Equivalent to [\t\n\r\f]? Date: Thu, 10 Jul 2014 10:04:40 -0400 References: <1e8dbd65-bd19-4b9d-a7ec-961e8304ace0@googlegroups.com> <7593d956-f202-4d1c-9e35-1269ab3dda57@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Gmane-NNTP-Posting-Host: 18.189.123.101 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 In-Reply-To: <7593d956-f202-4d1c-9e35-1269ab3dda57@googlegroups.com> 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: 56 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1405001097 news.xs4all.nl 2918 [2001:888:2000:d::a6]:58707 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:74303 On 7/10/14 9:32 AM, fl wrote: > On Thursday, July 10, 2014 7:18:01 AM UTC-4, MRAB wrote: >> On 2014-07-10 11:05, rx@gmail.com wrote: >> >> It's equivalent to [ \t\n\r\f], i.e. it also includes a space, so >> >> either the tutorial is wrong, or you didn't look closely enough. :-) >> >> >> The string starts with ' ', not '\t'. >> >> >> >> >> >> The string starts with ' ', which isn't in the character set. >> >> > The '\s' description is on link: > > http://www.tutorialspoint.com/python/python_reg_expressions.htm > For some reason, that page shows much of its information twice. The first occurrence of \s there is: \s Matches whitespace. Equivalent to [\t\n\r\f]. The second is: \s Match a whitespace character: [ \t\r\n\f] The second one is correct. The first is wrong. You might want to send the author a bug report. Actually, neither is strictly correct, since as the official docs (https://docs.python.org/2/library/re.html) say, \s When the UNICODE flag is not specified, it matches any whitespace character, this is equivalent to the set [ \t\n\r\f\v]. The LOCALE flag has no extra effect on matching of the space. If UNICODE is set, this will match the characters [ \t\n\r\f\v] plus whatever is classified as space in the Unicode character properties database. > > Could you give me an example to use the equivalent pattern? > > Thanks > -- Ned Batchelder, http://nedbatchelder.com