Path: csiph.com!eternal-september.org!feeder.eternal-september.org!border1.nntp.ams1.giganews.com!nntp.giganews.com!newsfeed.xs4all.nl!newsfeed8.news.xs4all.nl!nzpost1.xs4all.net!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.009 X-Spam-Evidence: '*H*': 0.98; '*S*': 0.00; 'subject:Python': 0.05; 'pypi': 0.07; 'versions.': 0.07; 'decision.': 0.09; 'subject:2.7': 0.09; 'python': 0.10; '2.7': 0.13; 'stack': 0.13; 'subject: \n ': 0.15; 'deprecate': 0.16; 'doesn\xe2\x80\x99t': 0.16; 'require.': 0.16; 'subject:user': 0.16; 'wrote:': 0.16; 'stefan': 0.18; 'subject:project': 0.18; 'language': 0.19; '2015': 0.20; '2.x': 0.22; 'seems': 0.23; 'wrote': 0.23; 'long,': 0.24; 'header:In- Reply-To:1': 0.24; 'developers': 0.26; 'linux': 0.26; 'chris': 0.26; 'wonder': 0.27; 'message-id:@mail.gmail.com': 0.27; 'then.': 0.27; 'it\xe2\x80\x99s': 0.29; 'ago': 0.29; 'subject:/': 0.30; "can't": 0.32; 'received:google.com': 0.35; 'so,': 0.35; 'on,': 0.35; 'but': 0.36; 'should': 0.36; 'project': 0.36; 'there': 0.36; '(and': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'doing': 0.38; 'version': 0.38; 'means': 0.39; 'why': 0.39; 'easily': 0.39; 'to:addr:python.org': 0.40; 'still': 0.40; 'subject:The': 0.61; 'default': 0.61; 'back': 0.62; 'different': 0.63; 'url:me': 0.64; 'decided': 0.66; 'guaranteed': 0.67; '5.4': 0.84; 'subject:survey': 0.84; 'url:posts': 0.84; 'subject:results': 0.91 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; bh=C4piIFrVXM+3hqUxTg6kIDdjYLWUZD9TIzu5j4hkTns=; b=yIVeVoxIvmEdTG3qgFLMS/+h5Mf7+zVhxeTKiQaOnScggtE3rYUJ0F6s8AS4Be86Hs rZBh9K3VTbHUAYJsuQi7jVQVox7rZrlYS8DmGZ1sfvhUATgoFcjKl2FK0OUTFiWobSXK OPq4K5wKw6qNbhg7JNm+rnRk8tCvzMXru0JznpQomSC5AW4R+IR2Vp+u9IskT6TH5rtf hIqzik63MhoqzmEUEx7g0aFGIhNfpm6tbBK4Kh9m8rgEboXYQzmf9pbbj8FHcTJkP0Y8 arGL2ja3mbOfRlYtT6qe0KlyDbxzTCOubPLjSkJN9wWB2GyfKtegkQbMjKz7ZNh2IH+H yqyg== MIME-Version: 1.0 X-Received: by 10.31.16.41 with SMTP id g41mr7545410vki.158.1443719804918; Thu, 01 Oct 2015 10:16:44 -0700 (PDT) In-Reply-To: References: Date: Thu, 1 Oct 2015 19:16:44 +0200 Subject: Re: The Nikola project is deprecating Python 2.7 (+2.x/3.x user survey results) From: Chris Warrick To: python-list@python.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.20+ 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: 37 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1443719813 news.xs4all.nl 23854 [2001:888:2000:d::a6]:56469 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:97291 On 1 October 2015 at 18:43, wrote: > Python 3 has venv in the kit. Is there a reason users should get the > virtualenv add-on? Both can be used; I wrote about virtualenv because it=E2=80=99s the tried-and-true solution (and is it guaranteed in all Linux distros anyway?) On 1 October 2015 at 19:02, Stefan Behnel wrote: > Chris Warrick schrieb am 01.10.2015 um 18:26: >> The Nikola developers decided to deprecate Python 2.7 support. > > I wonder why it took the Nikola project so long to take that decision. > Python 3.3 came out almost exactly three(!) years ago and seems to have a= ll > major features that they would require. Nikola's PyPI page claims support > of Python 3.3 for just about as long, since version 5.4 or so, which mean= s > that all of their dependencies were already available back then. > > It's a different thing for *libraries* that Python 2.x users still depend > on, but for an *application* that has all its (necessary) dependencies > available in Python 3.x, I can't see a general reason to keep supporting > both language versions. > > Stefan We did it now because it all started with frustration with 2.7 [0]. Also, doing it back in 2012/2013 would be problematic, because back then not all Linux distros had an easily installable Python 3 stack (and RHEL 7 still doesn=E2=80=99t have one in the default repos) [0]: http://ralsina.me/weblog/posts/floss-decision-making-in-action.html --=20 Chris Warrick PGP: 5EAAEA16