Path: csiph.com!usenet.pasdenom.info!aioe.org!news.stack.nl!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!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 0.061 X-Spam-Evidence: '*H*': 0.88; '*S*': 0.00; 'interpreter': 0.05; 'debugging': 0.07; 'url:github': 0.09; '(starting': 0.16; 'metaclass': 0.16; 'subclass': 0.16; 'thanks,': 0.17; 'all,': 0.19; 'trying': 0.19; "i've": 0.25; 'point': 0.28; 'message- id:@mail.gmail.com': 0.30; "i'm": 0.30; '350': 0.31; 'classes': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'level': 0.37; 'to:addr:python-list': 0.38; 'does': 0.39; 'to:addr:python.org': 0.39; 'either': 0.39; 'how': 0.40; 'side': 0.67; 'insight': 0.68; 'sound': 0.68; 'hoping': 0.75; 'pipeline': 0.91; 'subject:Class': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=MHM+4f2nEziPIdS4HEE3zzGU5ytB1r4H6Bsb/nkLR2E=; b=nLjO1zh9+WrSDOpK2Ko5Ww0tK8ti8WQbVcdsOYuMK6eHUiLTdPbFceptq5DfPtYFuD 7t0bHYXScttyt8vtlgUeqracfnurrrP7clXbZalnjQbugHcXrIqzoZrSN5J4eBN30M7V STZId5DqZomUxoxjmMssptJmr48NW3eXh5sI5WR8OHZAxvytJOieuve+gHd5z9NzXdbR Vl1i3oW156aNfwu0RkiX/+1wVOHLWCSjqwJBDzDkiSqabIoeGt541Kg+T1MJyTjFkrtK Xt785WZp2fXthvFB4nhLl6vfcWnCO34wKOLk7s1L8ppR+zunIpnV5tty4uq8KrUGGLnA 56Xg== MIME-Version: 1.0 X-Received: by 10.180.98.105 with SMTP id eh9mr10279227wib.56.1382368105859; Mon, 21 Oct 2013 08:08:25 -0700 (PDT) Date: Mon, 21 Oct 2013 08:08:25 -0700 Subject: Class construction From: Demian Brecht To: Python Content-Type: text/plain; charset=ISO-8859-1 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: 26 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1382368108 news.xs4all.nl 15985 [2001:888:2000:d::a6]:46504 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:57195 Hi all, I'm trying to wrap my head around how classes are constructed at the interpreter level (as a side effect of digging into metaclasses) and I'm hoping to have my investigation either validated or ridiculed ;) The pipeline that I've figured through some gdb debugging (starting at type_call): + type_call + is there a metaclass for this object? + return metaclass->tp_new + roughly 350 LOC constructing the type + is object is not a subclass of type? + return object + call obj->tp_init Does that sound correct? My C/gdb skills are horribly rusty at this point so expert insight would help :) Thanks, -- Demian Brecht http://demianbrecht.github.com