Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > comp.lang.python > #18450

Re: python philosophical question - strong vs duck typing

Path csiph.com!x330-a1.tempe.blueboxinc.net!newsfeed.hal-mli.net!feeder3.hal-mli.net!newsfeed.hal-mli.net!feeder1.hal-mli.net!de-l.enfer-du-nord.net!feeder1.enfer-du-nord.net!newsfeed.eweka.nl!eweka.nl!feeder3.eweka.nl!newsfeed.xs4all.nl!newsfeed6.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail
Return-Path <python-python-list@m.gmane.org>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.000
X-Spam-Evidence '*H*': 1.00; '*S*': 0.00; 'python,': 0.01; 'python.': 0.04; 'names.': 0.07; 'received:verizon.net': 0.07; 'statically': 0.07; 'terry': 0.07; 'whatever.': 0.07; 'python': 0.08; 'annotations': 0.09; 'necessary,': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:80.91.229.12': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'received:lo.gmane.org': 0.09; 'subject:python': 0.10; 'typing': 0.15; '1:13': 0.16; 'reedy': 0.16; 'subset': 0.16; 'subject:question': 0.17; 'language': 0.17; 'wrote:': 0.18; 'jan': 0.19; 'header:In-Reply-To:1': 0.22; 'extent': 0.24; 'code': 0.25; 'code.': 0.26; 'variable': 0.28; 'compile': 0.29; 'explicitly': 0.29; 'sean': 0.29; 'theoretical': 0.29; 'pm,': 0.29; 'closer': 0.30; 'compromise': 0.30; 'types.': 0.30; 'objects': 0.32; 'header :User-Agent:1': 0.33; 'header:X-Complaints-To:1': 0.33; 'there': 0.33; 'to:addr:python-list': 0.34; 'changing': 0.35; 'similar': 0.36; 'question': 0.36; 'subject:skip:p 10': 0.37; 'received:org': 0.38; 'option': 0.39; 'being': 0.39; 'strong': 0.39; 'to:addr:python.org': 0.40; 'type': 0.61; 'types': 0.61; 'our': 0.64; 'casting': 0.84; 'compiles': 0.84
X-Injected-Via-Gmane http://gmane.org/
To python-list@python.org
From Terry Reedy <tjreedy@udel.edu>
Subject Re: python philosophical question - strong vs duck typing
Date Tue, 03 Jan 2012 15:38:17 -0500
References <CAOFf2a0dG1tR1-2sJnqCCGqVXocqvzGScGeDJXeXwKdfdvuT-Q@mail.gmail.com>
Mime-Version 1.0
Content-Type text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding 7bit
X-Gmane-NNTP-Posting-Host pool-74-109-121-73.phlapa.fios.verizon.net
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20111105 Thunderbird/8.0
In-Reply-To <CAOFf2a0dG1tR1-2sJnqCCGqVXocqvzGScGeDJXeXwKdfdvuT-Q@mail.gmail.com>
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.12
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.4383.1325623116.27778.python-list@python.org> (permalink)
Lines 22
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1325623116 news.xs4all.nl 6938 [2001:888:2000:d::a6]:35353
X-Complaints-To abuse@xs4all.nl
Xref x330-a1.tempe.blueboxinc.net comp.lang.python:18450

Show key headers only | View raw


On 1/3/2012 1:13 PM, Sean Wolfe wrote:

> I have a theoretical / philosophical question regarding strong vs duck
> typing in Python. Let's say we wanted to type strongly in Python and

Python objects are strongly typed, in any sensible meaning of the term.
What you mean is statically or explicitly typing names.

> were willing to compromise our code to the extent necessary, eg not
> changing variable types or casting or whatever. Let's say there was a
> methodology in Python to declare variable types.
>
> The question is, given this possibility, would this get us closer to
> being able to compile down to a language like C or C++?

Cython compiles Python as is to C. It also gives the option to add type 
annotations to names to get faster code. Shredskin compiles a subset of 
Python, or a subset of usages, to C, with similar benefits.

-- 
Terry Jan Reedy

Back to comp.lang.python | Previous | NextNext in thread | Find similar | Unroll thread


Thread

Re: python philosophical question - strong vs duck typing Terry Reedy <tjreedy@udel.edu> - 2012-01-03 15:38 -0500
  Re: python philosophical question - strong vs duck typing Ben Finney <ben+python@benfinney.id.au> - 2012-01-04 10:10 +1100
  Re: python philosophical question - strong vs duck typing alex23 <wuwei23@gmail.com> - 2012-01-03 18:15 -0800
    Re: python philosophical question - strong vs duck typing John Nagle <nagle@animats.com> - 2012-01-08 21:35 -0800
      Re: python philosophical question - strong vs duck typing Robert Kern <robert.kern@gmail.com> - 2012-01-09 10:45 +0000
        Re: python philosophical question - strong vs duck typing John Nagle <nagle@animats.com> - 2012-01-13 09:30 -0800
      Re: python philosophical question - strong vs duck typing Lie Ryan <lie.1296@gmail.com> - 2012-01-11 00:05 +1100

csiph-web