Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!feeder.erje.net!eu.feeder.erje.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 0.079 X-Spam-Evidence: '*H*': 0.85; '*S*': 0.01; 'else:': 0.03; 'received:134': 0.05; 'subject:How': 0.10; 'def': 0.12; 'subclass': 0.16; 'code.': 0.18; 'header:User-Agent:1': 0.23; 'code': 0.31; 'class': 0.32; 'could': 0.34; 'classes': 0.35; 'something': 0.35; 'but': 0.35; 'there': 0.35; 'to:addr:python- list': 0.38; 'to:addr:python.org': 0.39; 'course': 0.61; 'such': 0.63; 'different': 0.65; 'here': 0.66; 'of:': 0.68; 'family': 0.73; 'pardon': 0.84 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Ap0IALKQYlGGuA9G/2dsb2JhbABRxFoEBIEehBI9FhgDAgECAVgIAogQnBiXO4kRj0CDKwOWdIVwix6DDQ Date: Mon, 08 Apr 2013 11:44:51 +0200 From: Antoon Pardon User-Agent: Mozilla/5.0 (X11; Linux i686; rv:10.0.12) Gecko/20130116 Icedove/10.0.12 MIME-Version: 1.0 To: python-list@python.org Subject: How to subclass a family Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit 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: 1365414362 news.xs4all.nl 6937 [2001:888:2000:d::a6]:39560 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:43053 Here is the idea. I have a number of classes with the same interface. Something like the following: class Foo1: def bar(self, ...): work def boo(self, ...): do something self.bar(...) What I want is the equivallent of: class Far1(Foo1): def boo(self, ...) do something different if whatever: self.bar(...) else: Foo1.boo(self, ...) Now of course I could subclass every class from the original family from Foo1 to Foon but that would mean a lot of duplicated code. Is there a way to reduce the use of duplicated code in such circumstances? -- Antoon Pardon