Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!gegeweb.org!de-l.enfer-du-nord.net!feeder2.enfer-du-nord.net!feeder.news-service.com!newsfeed.xs4all.nl!newsfeed6.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 0.000 X-Spam-Evidence: '*H*': 1.00; '*S*': 0.00; 'subject:" ': 0.03; 'assign': 0.04; '2.x': 0.05; 'attributes': 0.05; 'classes.': 0.05; 'instance': 0.05; 'page?': 0.07; 'terry': 0.07; 'python': 0.08; '3.x': 0.09; 'arguments.': 0.09; 'builtin': 0.09; 'modifier': 0.09; 'object.': 0.09; '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; 'subclasses': 0.09; 'subject:create': 0.09; 'subject:object': 0.09; 'pm,': 0.10; 'written': 0.14; 'wrote:': 0.14; 'new-style': 0.16; 'old-style': 0.16; 'reedy': 0.16; 'subject: \n ': 0.16; 'subject:classes': 0.16; 'classes,': 0.19; "hasn't": 0.19; 'jan': 0.20; 'header:In- Reply-To:1': 0.21; 'subject:need': 0.22; "doesn't": 0.25; 'function': 0.25; 'classes': 0.26; 'object': 0.26; 'says': 0.27; "i'm": 0.27; '(the': 0.28; 'subject:?': 0.29; 'class.': 0.29; 'exists': 0.29; 'updated': 0.29; 'elsewhere': 0.30; 'seem': 0.32; "can't": 0.32; 'header:X-Complaints-To:1': 0.32; 'does': 0.33; 'to:addr:python-list': 0.33; 'thinking': 0.34; 'force': 0.34; 'core': 0.35; 'header:User-Agent:1': 0.35; 'instances': 0.35; 'yet,': 0.35; 'reference': 0.35; 'quite': 0.36; 'subject:new': 0.37; 'received:org': 0.38; 'subject:from': 0.38; 'but': 0.38; 'docs': 0.38; 'subject:: ': 0.38; 'header:Mime-Version:1': 0.39; 'to:addr:python.org': 0.39; 'john': 0.62; 'website': 0.66; 'concept': 0.73; 'anywhere.': 0.84; 'opposition': 0.84; 'can\x92t': 0.91; 'anymore,': 0.95 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Terry Reedy Subject: Re: Do we still need to inherit from "object" to create new-style classes? Date: Tue, 21 Jun 2011 13:30:28 -0400 References: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: quoted-printable X-Gmane-NNTP-Posting-Host: rain.gmane.org User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.17) Gecko/20110414 Lightning/1.0b2 Thunderbird/3.1.10 In-Reply-To: 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: 35 NNTP-Posting-Host: 82.94.164.166 X-Trace: 1308677449 news.xs4all.nl 49044 [::ffff:82.94.164.166]:47275 X-Complaints-To: abuse@xs4all.nl Xref: x330-a1.tempe.blueboxinc.net comp.lang.python:8101 On 6/20/2011 9:26 PM, John Salerno wrote: > I can't quite seem to find the answer to this anywhere. The book I'm > reading right now was written for Python 3.1 and doesn't use (object), > so I'm thinking that was just a way to force new-style classes in 2.x > and is no longer necessary in 3.x. Is that right? > > (The documentation doesn't mention object anymore, Lib ref 2. builtin functions: "object() Return a new featureless object. object is a base for all classes. It=20 has the methods that are common to all instances of Python classes. This = function does not accept any arguments. Note object does not have a __dict__, so you can=92t assign arbitrary=20 attributes to an instance of the object class. " > but elsewhere on > the Python website it says the documentation hasn't been updated for > new-style classes yet, hence my confusion.) What page? *It* may need updating ;-). The core 3.x docs have been updated by removing all reference to=20 old-style classes and the modifier 'new-style'. The concept 'new-style'=20 only exists in opposition to 'old-style'. 3.x just has classes, and all=20 are subclasses of object. --=20 Terry Jan Reedy