Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.mixmin.net!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed3a.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 0.005 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'tutorial': 0.03; 'string.': 0.05; 'matches': 0.07; 'advice.': 0.09; 'character,': 0.09; 'subject:string': 0.09; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'message- id:@mrabarnett.plus.com': 0.16; 'normally,': 0.16; 'received:192.168.1.4': 0.16; 'received:84.93': 0.16; 'received:84.93.230': 0.16; 'thursday,': 0.16; 'language': 0.16; 'wrote:': 0.18; 'meant': 0.20; 'header:User-Agent:1': 0.23; 'string,': 0.24; 'url:moin': 0.24; 'question': 0.24; 'header:In- Reply-To:1': 0.27; 'chris': 0.29; 'on,': 0.29; 'url:wiki': 0.31; 'url:python': 0.33; 'running': 0.33; 'link.': 0.33; 'subject:the': 0.34; 'subject: (': 0.35; 'received:84': 0.35; 'but': 0.35; 'version': 0.36; 'really': 0.36; 'useful': 0.36; 'subject:?': 0.36; 'url:org': 0.36; 'should': 0.36; 'clear': 0.37; 'thank': 0.38; 'to:addr:python-list': 0.38; 'explain': 0.39; 'to:addr:python.org': 0.39; 'read': 0.60; 'url:3': 0.61; 'url:index': 0.63; 'july': 0.63; 'subject:. ': 0.67; 'link:': 0.72; '2001.': 0.84; 'examples.': 0.84 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.1 cv=E5NDpMtl c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=0Bzu9jTXAAAA:8 a=u9EReRu7m0cA:10 a=D51q0DnlfiYA:10 a=ihvODaAuJD4A:10 a=IkcTkHD0fZMA:10 a=EBOSESyhAAAA:8 a=8AHkEIZyAAAA:8 a=_eM4jbbvoTp6Mr8Ekr0A:9 a=QEXdDO2ut3YA:10 a=JqDHKOE5s7YA:10 X-AUTH: mrabarnett:2500 Date: Thu, 10 Jul 2014 17:48:25 +0100 From: MRAB User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: python-list@python.org Subject: Re: What does (A ``quote'' is the character used to open the string, i.e. either ' or ".) mean? References: <47595855-295a-43ee-8b4b-98dda4466669@googlegroups.com> In-Reply-To: <47595855-295a-43ee-8b4b-98dda4466669@googlegroups.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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: 41 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1405010910 news.xs4all.nl 2932 [2001:888:2000:d::a6]:55420 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:74315 On 2014-07-10 16:23, fl wrote: > On Thursday, July 10, 2014 10:14:14 AM UTC-4, Chris "Kwpolska" Warrick wrote: >> > >> >> >> Please don't learn from this link. It's from 2001. You should learn >> >> from modern documentation: https://docs.python.org/ (if not running >> >> 3.4.x, change the version in the top) >> >> >> >> You also should not read the language reference, it's meant for people >> >> who really care about what's under the hood. The official tutorial is >> >> better for learning: https://docs.python.org/3/tutorial/index.html >> >> > Thank you for your advice. My OP was originated from a question from this link: > https://wiki.python.org/moin/RegularExpression > > It has several useful examples. Several of them are not clear to me. Please > explain it to me. > > Is '\A' the same with '^'? > Is '\Z' the same with '$'? > \A matches at the start of the string. \Z matches at the end of the string. Normally, ^ matches at the start of the string, but if the re.MULTILINE flag is turned on, it matches at the start of a line. Normally, $ matches at the end of the string, or just before the final '\n' if that '\n' is the final character, but if the re.MULTILINE flag is turned on, it matches at the end of a line.