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


Groups > comp.lang.python > #106347

Re: Strange range

Path csiph.com!fu-berlin.de!uni-berlin.de!not-for-mail
From Random832 <random832@fastmail.com>
Newsgroups comp.lang.python
Subject Re: Strange range
Date Sun, 03 Apr 2016 01:20:52 -0400
Lines 16
Message-ID <mailman.389.1459660855.28225.python-list@python.org> (permalink)
References <87y48xjwqq.fsf@elektro.pacujo.net> <56fe76f2$0$22141$c3e8da3$5496439d@news.astraweb.com> <ndlvrt$1hlp$1@gioia.aioe.org> <mailman.311.1459521083.28225.python-list@python.org> <87lh4xjt37.fsf@elektro.pacujo.net> <1671ea2b-09ff-4745-a6e7-d2c57864cba3@googlegroups.com> <87zitbpwpr.fsf@elektro.pacujo.net> <57009f91$0$1612$c3e8da3$5496439d@news.astraweb.com>
Mime-Version 1.0
Content-Type text/plain
Content-Transfer-Encoding 7bit
X-Trace news.uni-berlin.de RzR4JeOBbIVFCbFKFmQadQp8aQ8AtMlurBzCY8d+Smzg==
Return-Path <random832@fastmail.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.005
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'guido': 0.05; 'received:internal': 0.09; 'message- id:@webmail.messagingengine.com': 0.16; 'now),': 0.16; 'received:10.202': 0.16; 'received:10.202.2': 0.16; 'received:10.202.2.212': 0.16; 'received:66.111': 0.16; 'received:66.111.4': 0.16; 'received:66.111.4.27': 0.16; 'received:io': 0.16; 'received:messagingengine.com': 0.16; 'received:out3-smtp.messagingengine.com': 0.16; 'received:psf.io': 0.16; 'wrote:': 0.16; 'object.': 0.22; 'occurs': 0.22; 'rid': 0.22; '(you': 0.23; 'header:In-Reply-To:1': 0.24; "doesn't": 0.26; 'back.': 0.27; 'yield': 0.27; 'comparison': 0.29; 'it."': 0.29; 'url:peps': 0.29; "can't": 0.32; 'url:python': 0.33; "d'aprano": 0.33; 'operations.': 0.33; 'steven': 0.33; 'url:dev': 0.35; 'but': 0.36; 'should': 0.36; 'url:org': 0.36; 'to:addr:python-list': 0.36; 'subject:: ': 0.37; 'received:10': 0.37; 'received:66': 0.38; 'several': 0.38; 'to:addr:python.org': 0.40; 'header :Message-Id:1': 0.61; 'personally': 0.61; 'repeat': 0.67; 'ranges': 0.76
DKIM-Signature v=1; a=rsa-sha1; c=relaxed/relaxed; d=fastmail.com; h= content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-sasl-enc :x-sasl-enc; s=mesmtp; bh=tIHaLAjyXj4SeUWbkGRfKsvUUlw=; b=kIijLm VVOdiXHsao3oztwh/mkOjdRWI9wrrJqDo+QXNYuTIomoqPpsmCBqqpLAIdhyu2Ar CRAlK2DwcgLZb5FO/WNaFY4xLErmX/Z0u1XFCkzFK3A0NBRe+Pm37AVejLgL07EL 60KEPFCMzg6me+r5Hz9FJJ4KdKvzgMF4IbByk=
DKIM-Signature v=1; a=rsa-sha1; c=relaxed/relaxed; d= messagingengine.com; h=content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-sasl-enc:x-sasl-enc; s=smtpout; bh=tIHaLAjyXj4SeUW bkGRfKsvUUlw=; b=e/7Mc89Wp2pMdKz5K9457Ryi7n9cL2oYawWQVs+wMIjqL4K XqZ9TEKjuVrPX03x/kq4blaVP3BjcdIWXg26isanj6loPhcXKr5GHZXLP8HUwsuM 2tIYApb89qE7ZyHk+rQcyOTNnAl8ej9s6lH+Ecr7JpEdagkl3g4rnCp0PrMU=
X-Sasl-Enc eKw2jOU+n4iLzpJzspkjaZvyqb57ytjFOctt729j92e2 1459660852
X-Mailer MessagingEngine.com Webmail Interface - ajax-2373d6a1
In-Reply-To <57009f91$0$1612$c3e8da3$5496439d@news.astraweb.com>
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.21
Precedence list
List-Id General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe <https://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 <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Xref csiph.com comp.lang.python:106347

Show key headers only | View raw


On Sun, Apr 3, 2016, at 00:43, Steven D'Aprano wrote:
> If you personally don't see any advantage in this, so be it, but you
> might
> not be aware of the history of (x)range:
> 
> Guido in 2001: "Nobody uses this extra functionality, and its buggy,
> let's
> get rid of it."
> 
> https://www.python.org/dev/peps/pep-0260/

Several of those features apparently never did come back. The repeat
count never did (you can't multiply ranges now), and it occurs to me
that slicing a range that has a repeat count is intractable:
(range(3)*2)[1:5] should yield 1, 2, 0, 1, which can't be represented as
a range object. It also doesn't support comparison operations.

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


Thread

Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-01 16:15 +0300
  Re: Strange range Chris Angelico <rosuav@gmail.com> - 2016-04-02 00:24 +1100
  Re: Strange range Steven D'Aprano <steve@pearwood.info> - 2016-04-02 00:26 +1100
    Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-01 17:12 +0300
      Re: Strange range Random832 <random832@fastmail.com> - 2016-04-01 10:39 -0400
    Re: Strange range Fabien <fabien.maussion@gmail.com> - 2016-04-01 16:16 +0200
      Re: Strange range Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-04-01 17:28 +0300
      Re: Strange range Chris Angelico <rosuav@gmail.com> - 2016-04-02 01:31 +1100
        Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-01 17:34 +0300
          Re: Strange range Jussi Piitulainen <jussi.piitulainen@helsinki.fi> - 2016-04-01 17:44 +0300
          Re: Strange range Chris Angelico <rosuav@gmail.com> - 2016-04-02 01:45 +1100
            Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-01 18:43 +0300
          Re: Strange range Erik <python@lucidity.plus.com> - 2016-04-01 20:58 +0100
            Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-01 23:14 +0300
              Re: Strange range Rob Gaddi <rgaddi@highlandtechnology.invalid> - 2016-04-01 20:21 +0000
                Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-01 23:44 +0300
              Re: Strange range Steven D'Aprano <steve@pearwood.info> - 2016-04-02 21:09 +1100
                Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-02 13:48 +0300
          Re: Strange range Ned Batchelder <ned@nedbatchelder.com> - 2016-04-02 12:47 -0700
            Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-02 23:44 +0300
              Re: Strange range Chris Angelico <rosuav@gmail.com> - 2016-04-03 07:05 +1000
                Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-03 00:40 +0300
                Re: Strange range Ned Batchelder <ned@nedbatchelder.com> - 2016-04-02 14:50 -0700
                Re: Strange range Stephen Hansen <me+python@ixokai.io> - 2016-04-02 23:43 -0700
                Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-03 09:58 +0300
                Re: Strange range Chris Angelico <rosuav@gmail.com> - 2016-04-03 17:10 +1000
                Re: Strange range Ethan Furman <ethan@stoneleaf.us> - 2016-04-03 09:28 -0700
                Re: Strange range Mark Lawrence <breamoreboy@yahoo.co.uk> - 2016-04-04 13:21 +0100
                Re: Strange range Chris Angelico <rosuav@gmail.com> - 2016-04-03 17:08 +1000
              Re: Strange range Steven D'Aprano <steve@pearwood.info> - 2016-04-03 14:43 +1000
                Re: Strange range Random832 <random832@fastmail.com> - 2016-04-03 01:20 -0400
                Re: Strange range Steven D'Aprano <steve@pearwood.info> - 2016-04-03 15:28 +1000
      Re: Strange range Marko Rauhamaa <marko@pacujo.net> - 2016-04-01 17:32 +0300
  Re: Strange range Random832 <random832@fastmail.com> - 2016-04-01 10:42 -0400
  Re: Strange range Chris Angelico <rosuav@gmail.com> - 2016-04-02 01:50 +1100
  Re: Strange range Ian Kelly <ian.g.kelly@gmail.com> - 2016-04-01 08:52 -0600

csiph-web