Path: csiph.com!usenet.pasdenom.info!dedibox.gegeweb.org!gegeweb.eu!nntpfeed.proxad.net!proxad.net!feeder1-2.proxad.net!usenet-fr.net!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!newsfeed.eweka.nl!eweka.nl!feeder3.eweka.nl!newsfeed.xs4all.nl!newsfeed5.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path: <rosuav@gmail.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.024
X-Spam-Evidence: '*H*': 0.95; '*S*': 0.00; 'output': 0.04; 'function,': 0.07; 'sep': 0.09; 'producing': 0.15; 'from:addr:rosuav': 0.16; 'from:name:chris angelico': 0.16; 'lookups': 0.16; 'operator;': 0.16; 'operators.': 0.16; 'wrote:': 0.17; 'thu,': 0.17; 'received:209.85.214.174': 0.21; 'statement': 0.23; 'header:In-Reply-To:1': 0.25; 'message-id:@mail.gmail.com': 0.27; 'overhead': 0.29; 'subject: ?': 0.30; 'unlike': 0.30; 'function': 0.30; 'could': 0.32; 'to:addr:python-list': 0.33; 'received:google.com': 0.34; 'pm,': 0.35; 'similar': 0.35; 'received:209.85': 0.35; 'subject:with': 0.36; 'received:209': 0.37; 'far': 0.37; 'subject:: ': 0.38; 'to:addr:python.org': 0.39; 'received:209.85.214': 0.39; 'little': 0.39; 'header:Received:5': 0.40; 'high': 0.61; 'more': 0.63; 'making': 0.64; 'direct': 0.69; 'benefit': 0.70; 'device,': 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; bh=Zxu1RAR4vOfWNtO+gVPEIh1dllcW1L/zxLXOI+lml8g=; b=PHKhTCsttcq2lPfcQdGhLVSaHDadOUDXddf6NVwX13TTquNH078UpUcX4cjWWk3Ghk l4Trnch4qAQqk8sa1QLuTrAsjRLcATyaQByqaBZbFj/lF3vhfZngqEN2NAUjPzbyzJWm eY8rxjSoYgiey/a8381ZG0CkcDsXCEkDAzYJL43Te3Nley5AGDFRw+oomvY2JsZ8CdPY uRAc4pS0VVOA0Y7B4jWECnUsFZFT6zeghnvLg7rjl0LX5AOjmLpznt+Oaz7xCbXygm6+ hwQtLdBPdRwVIto/ITThpUi6RzlNgMwBDjR8Nv1VvorNeOhF2TDh3YHjQni5EJcw4jJP A6mQ==
MIME-Version: 1.0
In-Reply-To: <eba98aa5-3da3-45f6-bf72-7e889f34bea6@googlegroups.com>
References: <franck-9EED34.08303005092012@news.free.fr> <504717ee$0$29977$c3e8da3$5496439d@news.astraweb.com> <b8c2c4dc-2afa-4921-bac1-1614e57c3e97@googlegroups.com> <50475e0a$0$29981$c3e8da3$5496439d@news.astraweb.com> <eba98aa5-3da3-45f6-bf72-7e889f34bea6@googlegroups.com>
Date: Thu, 6 Sep 2012 19:07:31 +1000
Subject: Re: is implemented with id ?
From: Chris Angelico <rosuav@gmail.com>
To: python-list@python.org
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 <python-list.python.org>
List-Unsubscribe: <http://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <http://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.280.1346922453.27098.python-list@python.org>
Lines: 11
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1346922453 news.xs4all.nl 6918 [2001:888:2000:d::a6]:49295
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:28561

On Thu, Sep 6, 2012 at 6:26 PM, Ramchandra Apte <maniandram01@gmail.com> wrote:
> the is statement could be made into a function

It's not a statement, it's an operator; and functions have far more
overhead than direct operators. There's little benefit in making 'is'
into a function, and high cost; unlike 'print', whose cost is
dominated by the cost of producing output to a console or similar
device, 'is' would be dominated by the cost of name lookups and
function call overhead.

ChrisA