Path: csiph.com!usenet.pasdenom.info!aioe.org!newsfeed1.swip.net!uio.no!news.tele.dk!news.tele.dk!small.news.tele.dk!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 0.003 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'exercise': 0.04; 'one?': 0.05; 'subject: -- ': 0.07; 'subject:bug': 0.07; 'wednesday,': 0.07; 'optimizing': 0.09; 'spec': 0.09; 'def': 0.12; 'fuzzy': 0.16; 'loops': 0.16; 'subject:?)': 0.16; 'so.': 0.16; 'sender:addr:gmail.com': 0.17; 'wrote:': 0.18; 'wed,': 0.18; 'bit': 0.19; 'to:name:python-list@python.org': 0.22; 'header:In- Reply-To:1': 0.27; 'am,': 0.29; 'compared': 0.30; 'message- id:@mail.gmail.com': 0.30; 'class': 0.32; 'but': 0.35; 'received:google.com': 0.35; 'there': 0.35; 'two': 0.37; 'depends': 0.38; 'skip:[ 10': 0.38; 'to:addr:python-list': 0.38; 'short': 0.38; 'itself': 0.39; 'to:addr:python.org': 0.39; 'first': 0.61; 'such': 0.63; 'map': 0.64; 'abc': 0.84; 'toy': 0.84; 'ware': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:content-type; bh=BicN1xhJR4yOYz7nl+gaA4VQvt0CjYRIFI+b6856x7A=; b=mxHbj5t7ur0hyY2lD3Qgn5NV7xHKf4i7Nz0qgQRhTrgPyuA4QIebYJziAAQawmSPYv 267rQUxIOJ5dw41kr43k+kLnDimbUtJ+2/99qqNiUs9+5k0r6GjHznKa8Hx7OWVF7tLS HMFfPjo6KmE0N3hN9LPx3M0CAsymyZ+eE3/3lX2sMcQ7dDBmYSfjmdVEkucR8uGA0Jhr nYdMMbmLjsypsKIwaeNj/7cX9H7mWGIINqDMTSf0JCIHcleK+zyhG4NQpBv4NEkJmZi5 /EvNU9Ew4uPijKMAllA4xWzoon5vjFg9fUecB0mFmhKrRU1j6plVRjfC9bQlnDB6xMf8 RkOg== X-Received: by 10.182.98.168 with SMTP id ej8mr7014501obb.41.1414563552724; Tue, 28 Oct 2014 23:19:12 -0700 (PDT) MIME-Version: 1.0 Sender: zachary.ware@gmail.com In-Reply-To: <525eb5e7-c221-4336-8c9a-aafb4c545f51@googlegroups.com> References: <94e3143a-c9ab-433d-8b3d-6ab296de14d9@googlegroups.com> <593c0099-770f-48cd-b7ba-22154b00f130@googlegroups.com> <525eb5e7-c221-4336-8c9a-aafb4c545f51@googlegroups.com> From: Zachary Ware Date: Wed, 29 Oct 2014 01:18:52 -0500 X-Google-Sender-Auth: ufdhEjqeSylRoebDf2Ili-TZemM Subject: Re: What for -- for? (was A bug?) To: "python-list@python.org" Content-Type: text/plain; charset=UTF-8 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: 22 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1414563555 news.xs4all.nl 2835 [2001:888:2000:d::a6]:47023 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:79896 On Wed, Oct 29, 2014 at 1:11 AM, Rustom Mody wrote: > On Wednesday, October 29, 2014 11:10:06 AM UTC+5:30, Zachary Ware wrote: >> Of course, that's 3 (progressively shorter) loops to get the names of >> the ABCs of a class compared to 1 (fairly short in the first place) >> loop for a map of relationships to all available ABCs, but optimizing >> such a toy as this would just be an exercise in futility :) > > Not so. > > The charm of introspection is that the introspection > itself can be introspected. > For that to be convincing there needs to be a good combo > of clarity and succinctness. In particular why not reduce > the two functions to one? > > def get_abc_names(cls): > return [abc.__name__ for abc in abcs if issubclass(cls,abc)] Well, it depends on what you actually want, the spec has been a bit fuzzy ;) -- Zach