Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder2.enfer-du-nord.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed5.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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'subject:using': 0.04; 'suppose': 0.05; 'prints': 0.07; 'subject:when': 0.07; 'python': 0.08; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:80.91.229.12': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'received:lo.gmane.org': 0.09; 'subject:problems': 0.09; 'output': 0.10; 'skip:[ 20': 0.12; 'def': 0.14; 'this:': 0.15; 'received:dip.t-dialin.net': 0.16; 'received:t-dialin.net': 0.16; 'subject:Filter': 0.16; 'subject:Got': 0.16; 'subject:logging': 0.16; 'wrote:': 0.18; 'from:addr:web.de': 0.23; 'import': 0.28; 'tried': 0.28; 'pass': 0.28; 'looks': 0.28; 'print': 0.29; 'class': 0.29; 'subject:some': 0.30; 'thanks': 0.31; 'to:addr:python-list': 0.32; 'source': 0.33; 'header:X-Complaints-To:1': 0.33; 'filter': 0.34; 'root': 0.34; 'skip:h 40': 0.34; 'cat': 0.36; 'received:org': 0.37; 'subject:: ': 0.39; 'to:addr:python.org': 0.39; 'skip:l 20': 0.40; 'your': 0.61; 'applying': 0.62; 'demo': 0.80 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Re: Got some problems when using logging Filter Date: Wed, 16 Nov 2011 15:50:51 +0100 Organization: None References: <5b246f46-ca59-43a4-b9a6-29fdfc86822e@j19g2000pro.googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p5084beb4.dip.t-dialin.net X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.12 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: 60 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1321455056 news.xs4all.nl 6938 [2001:888:2000:d::a6]:37238 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:15775 sword wrote: > Thanks for your reply. I tried to edit the source a bit, now the > main.py looks like this: > #main.py > import logging > from logging import Filter > import a > import b > > logging.basicConfig(level=logging.DEBUG) > root = logging.getLogger() > root.addFilter(Filter("GoneWithTheWind")) #so I suppose no log msg > would pass this filter > > logger = logging.getLogger("main") > logger.debug("main process") > a.print_log() > b.print_log() > > #### > And It still prints out all the log msg. :( Here's a little demo to explore how filtering works: $ cat demo.py import logging class Filter(logging.Filter): def filter(self, record): print "applying filter", self.name return True logging.basicConfig() loggers = [logging.getLogger(path) for path in ["", "a", "a.b"]] for logger in loggers: logger.addFilter(Filter("filter@" + logger.name)) [handler] = logging.getLogger().handlers handler.addFilter(Filter("filter@handler")) for logger in loggers: logger.critical("whatever") $ python demo.py applying filter filter@root applying filter filter@handler CRITICAL:root:whatever applying filter filter@a applying filter filter@handler CRITICAL:a:whatever applying filter filter@a.b applying filter filter@handler CRITICAL:a.b:whatever $ As you can infer from the output only the filter(s) of the original logger and of the handler(s) are applied.