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

Groups > comp.lang.python > #60673

Re: Python and PEP8 - Recommendations on breaking up long lines?

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!xlned.com!feeder3.xlned.com!news.astraweb.com!border2.a.newsrouter.astraweb.com!news.tele.dk!news.tele.dk!small.news.tele.dk!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <ethan@stoneleaf.us>
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; '(at': 0.04; 'output': 0.05; 'subject:Python': 0.06; 'assign': 0.07; 'from:addr:ethan': 0.09; 'from:addr:stoneleaf.us': 0.09; 'from:name:ethan furman': 0.09; 'input,': 0.09; 'message-id:@stoneleaf.us': 0.09; '~ethan~': 0.09; '2.7': 0.14; '(use': 0.16; 'clauses': 0.16; 'fine.': 0.16; 'received:69.93': 0.16; 'subject:breaking': 0.16; 'wrote:': 0.18; 'have:': 0.19; 'input': 0.22; 'header:User-Agent:1': 0.23; 'skip': 0.24; 'looks': 0.24; '(or': 0.24; 'least': 0.26; 'header:In-Reply- To:1': 0.27; 'important.': 0.30; 'statement': 0.30; 'open': 0.33; 'but': 0.35; 'there': 0.35; 'really': 0.36; 'charset:us-ascii': 0.36; 'subject:?': 0.36; 'two': 0.37; 'skip:o 20': 0.38; 'to:addr :python-list': 0.38; 'pm,': 0.38; 'to:addr:python.org': 0.39; 'expression': 0.60; 'received:173': 0.61; 'name': 0.63; 'different': 0.65; 'batchelder': 0.84; 'subject:long': 0.84
Date Wed, 27 Nov 2013 19:15:15 -0800
From Ethan Furman <ethan@stoneleaf.us>
User-Agent Mozilla/5.0 (X11; Linux x86_64; rv:16.0) Gecko/20121010 Thunderbird/16.0.1
MIME-Version 1.0
To python-list@python.org
Subject Re: Python and PEP8 - Recommendations on breaking up long lines?
References <a98cfbef-bc48-41e8-98de-e616f201ffbe@googlegroups.com> <l76bj2$mfc$1@ger.gmane.org>
In-Reply-To <l76bj2$mfc$1@ger.gmane.org>
Content-Type text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding 7bit
X-AntiAbuse This header was added to track abuse, please include it with any abuse report
X-AntiAbuse Primary Hostname - gator3304.hostgator.com
X-AntiAbuse Original Domain - python.org
X-AntiAbuse Originator/Caller UID/GID - [47 12] / [47 12]
X-AntiAbuse Sender Address Domain - stoneleaf.us
X-BWhitelist no
X-Source-IP 173.12.184.233
X-Source
X-Source-Args
X-Source-Dir
X-Source-Sender ([173.12.184.233]) [173.12.184.233]:54512
X-Source-Auth ethan+stoneleaf.us
X-Email-Count 1
X-Source-Cap dG9idWs7dG9idWs7Z2F0b3IzMzA0Lmhvc3RnYXRvci5jb20=
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 <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.3347.1385609859.18130.python-list@python.org> (permalink)
Lines 24
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1385609859 news.xs4all.nl 15899 [2001:888:2000:d::a6]:47338
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:60673

Show key headers only | View raw

On 11/27/2013 06:59 PM, Ned Batchelder wrote:
>
> The important thing in a with statement is that the assigned name will be closed (or otherwise exited) automatically.
> The open call is just the expression used to assign the name.  The expression there isn't really important.  This looks
> odd, but works the same as what you have:
>
>      input = open(self.full_path)
>      output = open(self.output_csv, 'ab')
>      with input as input, output as output:
>          ...
>
> (Use different names for the two parts of the "as" clauses if you like.)

Or skip the `as` clauses all together:

   input = ...
   output = ...
   with input, output:
     ...

works just fine.  (At least on 2.7 where I tested it. ;)

--
~Ethan~

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

Thread

Python and PEP8 - Recommendations on breaking up long lines? Victor Hooi <victorhooi@gmail.com> - 2013-11-27 17:57 -0800
  Re: Python and PEP8 - Recommendations on breaking up long lines? Victor Hooi <victorhooi@gmail.com> - 2013-11-27 18:03 -0800
    Re: Python and PEP8 - Recommendations on breaking up long lines? Ben Finney <ben+python@benfinney.id.au> - 2013-11-28 13:55 +1100
    Re: Python and PEP8 - Recommendations on breaking up long lines? Terry Reedy <tjreedy@udel.edu> - 2013-11-27 22:03 -0500
    Re: Python and PEP8 - Recommendations on breaking up long lines? Ned Batchelder <ned@nedbatchelder.com> - 2013-11-27 22:05 -0500
    Re: Python and PEP8 - Recommendations on breaking up long lines? Jussi Piitulainen <jpiitula@ling.helsinki.fi> - 2013-11-28 08:12 +0200
      Re: Python and PEP8 - Recommendations on breaking up long lines? Chris Angelico <rosuav@gmail.com> - 2013-11-28 17:22 +1100
    Re: Python and PEP8 - Recommendations on breaking up long lines? Roy Smith <roy@panix.com> - 2013-11-28 10:08 -0500
  Re: Python and PEP8 - Recommendations on breaking up long lines? Ben Finney <ben+python@benfinney.id.au> - 2013-11-28 13:47 +1100
    Re: Python and PEP8 - Recommendations on breaking up long lines? Steven D'Aprano <steve@pearwood.info> - 2013-11-28 03:02 +0000
      Re: Python and PEP8 - Recommendations on breaking up long lines? Ben Finney <ben+python@benfinney.id.au> - 2013-11-28 14:14 +1100
  Re: Python and PEP8 - Recommendations on breaking up long lines? Terry Reedy <tjreedy@udel.edu> - 2013-11-27 21:55 -0500
  Re: Python and PEP8 - Recommendations on breaking up long lines? Ned Batchelder <ned@nedbatchelder.com> - 2013-11-27 21:59 -0500
    Re: Python and PEP8 - Recommendations on breaking up long lines? Steven D'Aprano <steve@pearwood.info> - 2013-11-28 03:58 +0000
      Re: Python and PEP8 - Recommendations on breaking up long lines? Tim Chase <python.list@tim.thechases.com> - 2013-11-28 08:04 -0600
      Re: Python and PEP8 - Recommendations on breaking up long lines? Chris Angelico <rosuav@gmail.com> - 2013-11-29 01:21 +1100
      Re: Python and PEP8 - Recommendations on breaking up long lines? Ned Batchelder <ned@nedbatchelder.com> - 2013-11-28 12:26 -0500
  Re: Python and PEP8 - Recommendations on breaking up long lines? Ben Finney <ben+python@benfinney.id.au> - 2013-11-28 14:06 +1100
  Re: Python and PEP8 - Recommendations on breaking up long lines? Neil Cerutti <mr.cerutti@gmail.com> - 2013-11-27 22:09 -0500
  Re: Python and PEP8 - Recommendations on breaking up long lines? Ethan Furman <ethan@stoneleaf.us> - 2013-11-27 19:15 -0800
  Re: Python and PEP8 - Recommendations on breaking up long lines? Steven D'Aprano <steve@pearwood.info> - 2013-11-28 03:57 +0000
    Re: Python and PEP8 - Recommendations on breaking up long lines? Steven D'Aprano <steve@pearwood.info> - 2013-11-28 04:03 +0000
  Re: Python and PEP8 - Recommendations on breaking up long lines? MRAB <python@mrabarnett.plus.com> - 2013-11-28 12:43 +0000
  Re: Python and PEP8 - Recommendations on breaking up long lines? Walter Hurry <walterhurry@lavabit.com> - 2013-11-28 17:38 +0000
  Re: Python and PEP8 - Recommendations on breaking up long lines? Roel Schroeven <roel@roelschroeven.net> - 2013-11-28 19:37 +0100
  Re: Python and PEP8 - Recommendations on breaking up long lines? Nick Mellor <thebalancepro@gmail.com> - 2013-12-04 17:47 -0800

csiph-web