Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!news.mixmin.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed1.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 0.057 X-Spam-Evidence: '*H*': 0.91; '*S*': 0.02; 'python.': 0.02; 'attribute': 0.07; 'referring': 0.07; 'attributes': 0.09; 'python': 0.11; 'attribute.': 0.16; 'defined,': 0.16; 'pythonic': 0.16; 'roy': 0.16; 'wrote:': 0.18; 'define': 0.26; 'nearly': 0.26; 'header:In-Reply-To:1': 0.27; 'point': 0.28; 'correct': 0.29; 'tim': 0.29; 'message-id:@mail.gmail.com': 0.30; 'class': 0.32; 'implemented': 0.33; 'to:name:python-list': 0.33; 'skip:_ 10': 0.34; "i'd": 0.34; 'received:google.com': 0.35; "he's": 0.36; 'view,': 0.36; 'subject:?': 0.36; 'behind': 0.37; 'to:addr:python- list': 0.38; 'fact': 0.38; 'does': 0.39; 'to:addr:python.org': 0.39; 'providing': 0.61; 'our': 0.64; 'direct': 0.67; 'ethan': 0.84; 'furman': 0.84; 'absolutely': 0.87; 'contrary': 0.95; 'subject:skip:E 10': 0.95; '2013': 0.98 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; bh=JkPDT0dFuiGe2yNAIFla4uV+VlX+8NuQUcSLmLHJvtE=; b=KEe3LVHjLqh6PacrA867adrpOdCLgQM4u8/G1R8F/mq+FTL4Y8KinLTRPBpmWxq+1b 8VqfajiwVdB407OQ4dKKKW7Y/jP7OjaPT2LL9y4jZ7eKnSDts1vyYtYjSRIhZIK7C7cB yciJino5gBZbNdt0eiqjmXNh++6WzDAKIJuE+vye1bEUQr4X5zY30pgbZX9Iomo8qwpe MnAkSZtmGqFzwKtAaDK+Eh6/1oKV3eVM4/dQ/OyCvLZjYK1L3qXnZa+nKLptH2+sGuv9 mUasmIoyFBXT4pVNKeYCIx9btN7yOT9VCMeCohkMPJVq/iBtc2Uvjmt7BJFWA0WyAdxo wDrw== MIME-Version: 1.0 X-Received: by 10.182.84.132 with SMTP id z4mr14866968oby.49.1378072493590; Sun, 01 Sep 2013 14:54:53 -0700 (PDT) In-Reply-To: <5223A495.5070103@stoneleaf.us> References: <8255dfbd-a2a1-4ab7-b900-ee19faa459f2@googlegroups.com> <8c7c4854-70e1-46e7-a3ff-a3206c4c5c27@googlegroups.com> <5221567b$0$6599$c3e8da3$5496439d@news.astraweb.com> <5221d7ab$0$6599$c3e8da3$5496439d@news.astraweb.com> <5222f675$0$6599$c3e8da3$5496439d@news.astraweb.com> <9c11126f-93e8-461c-b487-bafc6b146269@googlegroups.com> <5223A495.5070103@stoneleaf.us> Date: Mon, 2 Sep 2013 07:54:53 +1000 Subject: Re: Encapsulation unpythonic? From: Tim Delaney To: Python-List Content-Type: multipart/alternative; boundary=089e0111c09a748d3404e55981a5 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: 61 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1378072496 news.xs4all.nl 15863 [2001:888:2000:d::a6]:41597 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:53435 --089e0111c09a748d3404e55981a5 Content-Type: text/plain; charset=UTF-8 On 2 September 2013 06:33, Ethan Furman wrote: > > class PlainPython: > > value = None > > > In the Javaesque class we see the unPythonic way of using getters/setters; > in the ProtectedPython* class we see the pythonic way of providing > getters/setters**; in the PlainPython class we have the standard, > unprotected, direct access to the class attribute. > > No where in PlainPython is a getter/setter defined, nor does Python define > one for us behind our backs. > > If you have evidence to the contrary I'd like to see it. > I think Roy is referring to the fact that attribute access is implemented via __getattr__ / __getattribute__ / __setattr__ / __delattr__. From one point of view, he's absolutely correct - nearly all attributes are accessed via getters/setters in Python. Tim Delaney --089e0111c09a748d3404e55981a5 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On 2 September 2013 06:33, Ethan Furman = <ethan@stoneleaf= .us> wrote:

class PlainPython:

=C2=A0 =C2=A0 value =3D None


In the Javaesque class we see the unPythonic way of using getters/setters; = in the ProtectedPython* class we see the pythonic way of providing getters/= setters**; in the PlainPython class we have the standard, unprotected, dire= ct access to the class attribute.

No where in PlainPython is a getter/setter defined, nor does Python define = one for us behind our backs.

If you have evidence to the contrary I'd like to see it.

I think Roy is referring to the fact that attribute a= ccess is implemented via __getattr__ / __getattribute__ / __setattr__ / __d= elattr__. From one point of view, he's absolutely correct - nearly all = attributes are accessed via getters/setters in Python.

Tim Delaney
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