Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.mixmin.net!eweka.nl!hq-usenetpeers.eweka.nl!xlned.com!feeder7.xlned.com!news2.euro.net!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path: <python-python-list@m.gmane.org>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.006
X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:()': 0.09; 'def': 0.10; 'received:80.91.229.3': 0.16; 'received:dip.t-dialin.net': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-dialin.net': 0.16; 'subject:expression': 0.16; 'subject:regular': 0.16; 'subject:sign': 0.16; 'wrote:': 0.17; '>>>': 0.18; 'header:User- Agent:1': 0.26; 'header:X-Complaints-To:1': 0.28; 'mid': 0.29; 'print': 0.32; 'to:addr:python-list': 0.33; 'skip:d 20': 0.34; 'text': 0.34; 'received:org': 0.36; 'method': 0.36; 'subject:with': 0.36; 'does': 0.37; 'why': 0.37; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; 'skip:" 10': 0.40; 'header:Received:5': 0.40; 'end': 0.40; 'dollar': 0.71; 'subjectcharset:utf-8': 0.72; 'subject:dollar': 0.84
X-Injected-Via-Gmane: http://gmane.org/
To: python-list@python.org
From: Peter Otten <__peter__@web.de>
Subject: Re: regular expression : the dollar sign ($) work with re.match() or re.search() =?UTF-8?B?77yf?=
Date: Wed, 26 Sep 2012 10:33:11 +0200
Organization: None
References: <5d913584-b5ea-4ff1-8094-f4d5b273c0b6@googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: 8Bit
X-Gmane-NNTP-Posting-Host: p5084bb09.dip.t-dialin.net
User-Agent: KNode/4.7.3
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.15
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.1406.1348648406.27098.python-list@python.org>
Lines: 27
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1348648406 news.xs4all.nl 6935 [2001:888:2000:d::a6]:44424
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:30163

iMath wrote:

> I only know  the dollar sign ($) will match a pattern from the
> end of a string,but which method does it work with ,re.match() or
> re.search()  ？

Why not try it out in the interactive interpreter? Here's the "deluxe 
version":

>>> def demo(pattern="mid$", texts=["start mid end", "start mid", "mid end", 
"mid"], matchers=[re.match, re.search]):
...     print "pattern:", pattern
...     for text in texts:
...             for matcher in matchers:
...                     name = matcher.__name__
...                     print u"\N{CHECK MARK}" + name if matcher(pattern, 
text) else (" "*(len(name)+1)),
...             print repr(text)
... 
>>> demo()
pattern: mid$
               'start mid end'
       ✓search 'start mid'
               'mid end'
✓match ✓search 'mid'