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


Groups > comp.lang.python > #53168

Re: python3 integer division debugging

Path csiph.com!usenet.pasdenom.info!gegeweb.org!usenet-fr.net!nerim.net!novso.com!newsfeed.xs4all.nl!newsfeed4.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!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 0.004
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'interpreter': 0.05; 'detect': 0.07; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'python': 0.11; "wouldn't": 0.14; 'changes': 0.15; 'ah!': 0.16; 'benjamin': 0.16; "guido's": 0.16; 'porting': 0.16; 'python3.': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'subject:python3': 0.16; 'wrote:': 0.18; 'looked': 0.18; 'thu,': 0.19; 'seems': 0.21; 'machine': 0.22; '>>>': 0.22; 'aug': 0.22; 'header:User-Agent:1': 0.23; 'integer': 0.24; 'source': 0.25; 'header:X-Complaints-To:1': 0.27; 'chris': 0.29; 'am,': 0.29; 'errors': 0.30; 'mode': 0.30; 'code': 0.31; 'division': 0.31; 'thanks!': 0.32; 'run': 0.32; 'another': 0.32; 'there': 0.35; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'problems.': 0.60; 'most': 0.60; 'august': 0.61; 'such': 0.63; 'wish': 0.70; 'funny': 0.74; 'joke,': 0.84; 'oscar': 0.84; 'received:139': 0.84; 'silent': 0.95; '2013': 0.98
X-Injected-Via-Gmane http://gmane.org/
To python-list@python.org
From Neal Becker <ndbecker2@gmail.com>
Subject Re: python3 integer division debugging
Date Wed, 28 Aug 2013 11:29:23 -0400
References <kvl470$b86$1@ger.gmane.org> <CAHVvXxTZbGxximAXq0y_mmiou7SNCZvacYTSkVXZBEKJzCduMg@mail.gmail.com> <CAPTjJmqUpC=vYnnWzg6wOwNAEBeMS-oLXG4qdeVVDeKA593VVg@mail.gmail.com>
Mime-Version 1.0
Content-Type text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding 7Bit
X-Gmane-NNTP-Posting-Host exa2-in-fw-01-epn.hns.com
User-Agent KNode/4.10.5
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.317.1377703777.19984.python-list@python.org> (permalink)
Lines 23
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1377703777 news.xs4all.nl 15973 [2001:888:2000:d::a6]:59373
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:53168

Show key headers only | View raw


Chris Angelico wrote:

> On Thu, Aug 29, 2013 at 1:21 AM, Oscar Benjamin
> <oscar.j.benjamin@gmail.com> wrote:
>> On 28 August 2013 16:15, Neal Becker <ndbecker2@gmail.com> wrote:
>>> The change in integer division seems to be the most insidious source of
>>> silent errors in porting code from python2 - since it changes the behaviour
>>> or valid code silently.
>>>
>>> I wish the interpreter had an instrumented mode to detect and report such
>>> problems.
>>
>> Is that a joke?
>>
>> Run the code under Python 2.6/2.7 with the -3 flag:
> 
> I wouldn't say that's a joke, it's just another demonstration of
> Guido's time machine :)
> 
> ChrisA

Ah!  I looked for it in python3.  Funny it isn't there as well.  Thanks!

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


Thread

Re: python3 integer division debugging Neal Becker <ndbecker2@gmail.com> - 2013-08-28 11:29 -0400

csiph-web