Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!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 0.001 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'interpreter': 0.05; 'attribute': 0.07; 'purpose.': 0.07; 'attributes': 0.09; 'omit': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:question': 0.10; 'question.': 0.14; 'likewise': 0.16; 'received:80.91.229.3': 0.16; 'received:dip0.t-ipconnect.de': 0.16; 'received:plane.gmane.org': 0.16; 'received:t-ipconnect.de': 0.16; 'subject:class': 0.16; 'wrote:': 0.18; 'code.': 0.18; 'header:User-Agent:1': 0.23; 'least': 0.26; 'header:X-Complaints- To:1': 0.27; 'point': 0.28; 'code': 0.31; 'class': 0.32; 'run': 0.32; 'agree': 0.35; 'but': 0.35; 'add': 0.35; 'subject:regarding': 0.36; "i'll": 0.36; 'should': 0.36; 'to:addr :python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'read': 0.60; "you've": 0.63; 'show': 0.63; 'benefit': 0.68; 'fulfill': 0.68; 'otten': 0.84; 'trouble.': 0.91 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Peter Otten <__peter__@web.de> Subject: Re: Newbie: question regarding references and class relationships Date: Mon, 10 Jun 2013 19:07:06 +0200 Organization: None References: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7Bit X-Gmane-NNTP-Posting-Host: p508489f5.dip0.t-ipconnect.de 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 37 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1370884029 news.xs4all.nl 15947 [2001:888:2000:d::a6]:44571 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:47583 Rui Maciel wrote: > Peter Otten wrote: > >> I don't understand the question. My original point was that you should >> omit class attributes that don't fulfill a technical purpose. >> > > You've said the following: > > >> class Point: > > Don't add > >> position = [] > > to your code. That's not a declaration, but a class attribute and in the > long run it will cause nothing but trouble. > > > > We've established that you don't like attribute declarations, at least > those > you describe as not fulfill a technical purpose. What I don't understand > is why you claim that that would "cause nothing but trouble". Have you read the code in the interpreter session I posted? If you do not agree that the demonstrated behaviour is puzzling I'll have to drop my claim... Likewise if you can show a benefit of the >> position = [] line.