Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!eweka.nl!lightspeed.eweka.nl!194.109.133.83.MISMATCH!newsfeed.xs4all.nl!newsfeed4.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 0.018 X-Spam-Evidence: '*H*': 0.96; '*S*': 0.00; 'subject:modules': 0.09; 'python': 0.11; 'a.py': 0.16; 'b.py': 0.16; 'c.py': 0.16; 'imports': 0.16; 'loops': 0.16; 'modules,': 0.16; 'received:74.208.4.195': 0.16; 'wrote:': 0.18; 'import': 0.22; 'header:User-Agent:1': 0.23; 'module,': 0.24; 'header:In-Reply- To:1': 0.27; 'minor': 0.31; 'another': 0.32; 'problem.': 0.35; 'there': 0.35; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'to:addr:python.org': 0.39; 'break': 0.61; 'subject:. ': 0.67; 'received:74.208': 0.68 Date: Wed, 24 Apr 2013 13:55:12 -0400 From: Dave Angel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130329 Thunderbird/17.0.5 MIME-Version: 1.0 To: python-list@python.org Subject: Re: improvements sought re. logging across modules References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V02:K0:4vzinWlC7NZexsUTBd/u0MKlXIwu+RXv337KRaKHH9u F5uosU2ZHLRX/lEWefQxnyCK4Sk9jpeWmY8V4LDXZEaHa+Qc/6 b19CKI1FHqpUMTD315P/Z5JtAIczDIDLmpsQvo4vsxDatvBWAU ybske6qaMK9ntmFDUoypavOm+eKaIostylJvNEbhxS0Pqfh93v wSvezdhRCLUb45csURPtds1P4igF4x7wj8h80fNO50hyQLdamC NcyJkcmVRwBG2vYA2BQ73MuWwr1De8uReaxaDfGP97fgrQDqVi zE8naDJuXJWkI1wySDR3k69X1xok4QRq+KpJekVXn4sUiMsXQ= = 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: 27 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1366826130 news.xs4all.nl 15953 [2001:888:2000:d::a6]:47028 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:44280 On 04/24/2013 12:54 PM, The Night Tripper wrote: > Hi all > I have a small suite of python modules, say > > A.py > B.py > C.py > > which can be invoked in a variety of ways. eg. > > 1) A.py is invoked directly; this imports and uses B.py and C.py > > 2) B.py is invoked; this imports and uses A.py and C.py > Right there you have a potential problem. Unless you make those imports conditional, you have an import loop, which can be a minor problem, or a big one. Whenever you find loops in the import call tree, please break them. The best way is to move the interdependencies into yet another module, and let both A and B import that one. -- DaveA