Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!newsfeed.freenet.ag!news2.euro.net!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 0.002 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'python': 0.08; '(it': 0.09; 'from:addr:python': 0.09; 'referenced': 0.09; 'def': 0.13; 'from:addr:mrabarnett.plus.com': 0.16; 'from:name:mrab': 0.16; 'logger.': 0.16; 'message-id:@mrabarnett.plus.com': 0.16; 'over:': 0.16; 'received:84.92': 0.16; 'received:84.92.122': 0.16; 'received:84.92.122.60': 0.16; 'received:84.93': 0.16; 'received:84.93.230': 0.16; 'reply-to:addr:python-list': 0.16; 'roy': 0.16; 'subject:Overriding': 0.16; 'subject:global': 0.16; 'wrote:': 0.18; 'this?': 0.19; 'header:In-Reply-To:1': 0.22; 'module,': 0.23; 'code': 0.25; 'module': 0.26; 'function': 0.27; 'variable': 0.28; 'module.': 0.29; 'class': 0.29; 'lines': 0.30; 'lot.': 0.30; 'pattern': 0.30; 'skip:g 40': 0.30; "i've": 0.31; 'skip:l 30': 0.32; 'implement': 0.32; 'header:User-Agent:1': 0.33; 'decide': 0.33; 'to:addr:python-list': 0.34; 'received:84': 0.34; 'reply-to:addr:python.org': 0.34; 'rest': 0.35; 'skip:" 10': 0.37; 'but': 0.37; 'could': 0.37; 'to:addr:python.org': 0.40; 'once': 0.60; 'more': 0.61; 'works,': 0.68; 'legal': 0.70; 'header:Reply- To:1': 0.71; 'reply-to:no real name:2**0': 0.72 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.0 cv=IcoFqBWa c=1 sm=1 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=9jsOeB20M3cA:10 a=OUOv7kDek9cA:10 a=8nJEP1OIZ-IA:10 a=CtzhSq7o9CJeKh3gQVkA:9 a=wPNLvfGTeEIA:10 a=0nF1XD0wxitMEM03M9B4ZQ==:117 X-AUTH: mrabarnett:2500 Date: Sat, 10 Dec 2011 21:07:18 +0000 From: MRAB User-Agent: Mozilla/5.0 (Windows NT 5.1; rv:8.0) Gecko/20111105 Thunderbird/8.0 MIME-Version: 1.0 To: python-list@python.org Subject: Re: Overriding a global 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: 2.1.12 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: 41 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1323551240 news.xs4all.nl 6922 [2001:888:2000:d::a6]:42934 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:16968 On 10/12/2011 20:47, Roy Smith wrote: > I've got a code pattern I use a lot. In each module, I create a logger > for the entire module and log to it all over: > > logger = logging.getLogger('my.module.name') > > class Foo: > def function(self): > logger.debug('stuff') > logger.debug('other stuff') > > and so on. This works, but every once in a while I decide that a > particular function needs a more specific logger, so I can adjust the > logging level for that function independent of the rest of the module. > What I really want to do is: > > def function(self): > logger = logger.getChild('function') > logger.debug('stuff') > logger.debug('other stuff') > > which lets me not have to change any lines of code other than inserting > the one to redefine logger. Unfortunately, that's not legal Python (it > leads to "UnboundLocalError: local variable 'logger' referenced before > assignment"). > > Any ideas on the best way to implement this? You could use a different name: def function(self): logger2 = logger.getChild('function') logger2.debug('stuff') logger2.debug('other stuff') or use 'globals': def function(self): logger = globals()['logger'].getChild('function') logger.debug('stuff') logger.debug('other stuff')