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


Groups > comp.lang.python > #95658

Re: [a,b,c,d] = 1,2,3,4

Path csiph.com!au2pb.net!feeder.erje.net!1.eu.feeder.erje.net!feeds.phibee-telecom.net!newsfeed.xs4all.nl!newsfeed8.news.xs4all.nl!nzpost1.xs4all.net!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 0.001
X-Spam-Evidence '*H*': 1.00; '*S*': 0.00; 'subject:: [': 0.03; '*is*': 0.09; '[0,': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'python': 0.10; 'jan': 0.11; 'iterated': 0.16; 'iterator': 0.16; 'range(0,': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'reedy': 0.16; 'wrote:': 0.16; '>>>': 0.20; 'am,': 0.23; 'tim': 0.24; 'header:In-Reply- To:1': 0.24; 'header:User-Agent:1': 0.26; 'header:X-Complaints- To:1': 0.26; 'separate': 0.27; 'sequence': 0.27; 'chase': 0.29; 'class': 0.33; 'instance': 0.35; 'to:addr:python-list': 0.36; 'received:org': 0.37; 'why': 0.39; 'to:addr:python.org': 0.40; 'times': 0.63; 'subject:,': 0.82; 'received:fios.verizon.net': 0.91
X-Injected-Via-Gmane http://gmane.org/
To python-list@python.org
From Terry Reedy <tjreedy@udel.edu>
Subject Re: [a,b,c,d] = 1,2,3,4
Date Wed, 26 Aug 2015 11:16:46 -0400
References <CAPM-O+y-FftPRv7_VqSG6JVp3ocr__yd=RuppLh5ZWcMg25v+g@mail.gmail.com> <935842626.955183.1440514765199.JavaMail.root@sequans.com> <20150826072134.03ed9e71@bigbox.christie.dr>
Mime-Version 1.0
Content-Type text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding 7bit
X-Gmane-NNTP-Posting-Host pool-98-114-97-173.phlapa.fios.verizon.net
User-Agent Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0
In-Reply-To <20150826072134.03ed9e71@bigbox.christie.dr>
X-BeenThere python-list@python.org
X-Mailman-Version 2.1.20+
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>
Newsgroups comp.lang.python
Message-ID <mailman.49.1440602243.11709.python-list@python.org> (permalink)
Lines 25
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1440602243 news.xs4all.nl 23819 [2001:888:2000:d::a6]:38797
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:95658

Show key headers only | View raw


On 8/26/2015 8:21 AM, Tim Chase wrote:

>> a, b, c = (x for x in range(3)) # a generator for instance
>
> Since range() *is* a generator, why not just use

In Python 3, range is a sequence class with a separate iterator class

 >>> r = range(3)
 >>> r
range(0, 3)
 >>> iter(r)
<range_iterator object at 0x00000000034682D0>

Like all sequences, a range object can be iterated multiple times as a 
new iterator is used each time.

 >>> list(r)
[0, 1, 2]
 >>> list(r)
[0, 1, 2]

-- 
Terry Jan Reedy

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


Thread

Re: [a,b,c,d] = 1,2,3,4 Terry Reedy <tjreedy@udel.edu> - 2015-08-26 11:16 -0400

csiph-web