Path: csiph.com!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!newsfeed.xs4all.nl!newsfeed4a.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 0.008 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'essentially': 0.04; 'cpython': 0.05; 'forgive': 0.05; 'subject:Python': 0.06; 'lawrence': 0.09; 'migration': 0.09; 'subject:language': 0.09; 'language,': 0.12; "(i'm": 0.16; 'fork': 0.16; 'ian.': 0.16; 'interpreter,': 0.16; 'mark,': 0.16; 'subject: \n ': 0.16; 'undesirable': 0.16; 'comment:': 0.16; 'folks': 0.16; 'wrote:': 0.18; 'trying': 0.19; 'basically': 0.19; 'community,': 0.19; 'community.': 0.22; '2.x': 0.24; 'certainly': 0.24; 'driven': 0.24; "i've": 0.25; 'header:In-Reply-To:1': 0.27; 'words': 0.29; 'subject:list': 0.30; 'message-id:@mail.gmail.com': 0.30; 'towards': 0.31; 'another': 0.32; 'quite': 0.32; 'fri,': 0.33; "can't": 0.35; 'but': 0.35; 'received:google.com': 0.35; "didn't": 0.36; 'behind': 0.37; 'too': 0.37; 'driving': 0.38; 'to:addr :python-list': 0.38; 'pm,': 0.38; '(from': 0.39; 'heard': 0.39; 'quote': 0.39; 'to:addr:python.org': 0.39; 'users': 0.40; 'eventually': 0.60; 'royal': 0.61; 'first': 0.61; 'here': 0.66; 'between': 0.67; 'subject:this': 0.83; '2.7.': 0.84; 'conservative': 0.84; 'fragments': 0.84; 'here)': 0.84; 'quote,': 0.84; 'route': 0.84; 'upgrade,': 0.84 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type; bh=/O3QIwGmAKWI/G1eGxQu1uO/UzYEJ/VWfKX6k3Y1Cls=; b=FYC5IrlptsQvfAWoE6Np3MBytzWXGkv2QjiIo415EAtH1sw+1JE0tH5gE76uwG4JDs YQB4yET+4892rTGsFVix4v8M7ecwouALHB4ZUFnchC0ZIEdUBnfNYQOJmBXJKONQ51Et dyHib5Njnl8JFrqKWiO87CQRbltxRaCTAElLBctvz88cB/hAOQgk/J53ipXPipH9COOz Aw7CGfKupFJzsEqGTI2470Ef4pGBfQ1URdDQHWpWHn61gwmjV3HrChSJiU+Dn+6S2VJB aMB3trEixn5A4GVYyrcOo9Y3d9jm2YCe805AkXvxgEnJi4HFl3Fm1xOD03ljoYbP1d0p SKnw== X-Received: by 10.68.162.34 with SMTP id xx2mr18924317pbb.120.1396674200798; Fri, 04 Apr 2014 22:03:20 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: References: <9daf0806-02de-4447-964c-c8f8953c23e5@googlegroups.com> <53364327$0$29994$c3e8da3$5496439d@news.astraweb.com> <53365F55.2040302@gmail.com> <533836c4$0$29994$c3e8da3$5496439d@news.astraweb.com> <533F2D0F.2080806@gmail.com> <533F3796.1000807@gmail.com> From: Ian Kelly Date: Fri, 4 Apr 2014 23:02:40 -0600 Subject: Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list) 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: 27 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1396674204 news.xs4all.nl 2930 [2001:888:2000:d::a6]:44198 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:69710 On Fri, Apr 4, 2014 at 10:10 PM, Mark H Harris wrote: > On 4/4/14 6:16 PM, Mark Lawrence wrote: >> >> Fear/panic of a fork, where did that come from? It's certainly the >> first I've ever heard of it. >> > > hi Mark, it came from Ian; or, my interpretation of Ian. It comes out on the > net too (from various places). Here is Ian's quote, then my comment: > > >> Eventually users still on 2.x will need to upgrade, but you >> can't force them to do it on your own schedule. That path will just >> end up driving them to another language, or to a fork of 2.7. > > > The sentiment behind this last quote is essentially fear (and that is > natural). Its basically the tension between (I'm speaking as the royal we > here) we don't want folks to be driven away from Cpython as a language, and > we don't want them to fork the Cpython interpreter, so we'll take a very > casual and methodically conservative approach to nudging people towards a > Cpython3 migration route ( I am speaking not for the community, just > hypothetically trying to get at the gist of Ian's quote); please forgive me > if I didn't quite get it. A fork is undesirable because it fragments the community. I don't think "fear" or "panic" are the right words for it.