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

Groups > comp.lang.python > #80934

Re: Using map()

Path csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed2a.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; 'messages.': 0.05; 'builtin': 0.09; 'pavel': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'subject:()': 0.09; 'bug': 0.12; 'fine.': 0.16; 'magic': 0.16; 'meanwhile,': 0.16; 'personally,': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'vary.': 0.16; 'wrote:': 0.18; 'header:User-Agent:1': 0.23; 'received:comcast.net': 0.24; 'header:X-Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'function': 0.29; "doesn't": 0.30; "d'aprano": 0.31; 'steven': 0.31; 'checked': 0.32; 'but': 0.35; 'useful': 0.36; 'to:addr:python-list': 0.38; 'pm,': 0.38; 'bad': 0.39; 'to:addr:python.org': 0.39; 'received:org': 0.40; "you've": 0.63; 'such': 0.63; 'attention': 0.75; 'saw': 0.77; 'language!': 0.84; 'subject:Using': 0.84; 'was:': 0.91
X-Injected-Via-Gmane http://gmane.org/
To python-list@python.org
From Ned Batchelder <ned@nedbatchelder.com>
Subject Re: Using map()
Date Sun, 16 Nov 2014 19:24:42 -0500
References <mailman.15896.1416169228.18130.python-list@python.org> <54693cc4$0$13000$c3e8da3$5496439d@news.astraweb.com>
Mime-Version 1.0
Content-Type text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding 7bit
X-Gmane-NNTP-Posting-Host c-50-133-228-126.hsd1.ma.comcast.net
User-Agent Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.6.0
In-Reply-To <54693cc4$0$13000$c3e8da3$5496439d@news.astraweb.com>
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.15924.1416183892.18130.python-list@python.org> (permalink)
Lines 26
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1416183892 news.xs4all.nl 2935 [2001:888:2000:d::a6]:35804
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:80934

Show key headers only | View raw

On 11/16/14 7:09 PM, Steven D'Aprano wrote:
> Pavel Volkov wrote:
>
>> I checked my modules with pylint and saw the following warning:
>>
>> W: 25,29: Used builtin function 'map' (bad-builtin)
>>
>> Why is the use of map() discouraged?
>> It' such a useful thing.
>
> That's a bug in pylint. It's not a bad builtin, it is perfectly fine.
>
> Some people don't like map. Pay no attention to them.

Pylint isn't useful until you've tailored the messages.  Personally, I 
avoid map, but your usage may vary.  The pylint message that always 
irked me was:

     W0142: Used * or ** magic

"magic"? They're features of the language!  Meanwhile, it doesn't mind 
if you write multiply-inherited metaclasses....

-- 
Ned Batchelder, http://nedbatchelder.com

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

Thread

Using map() Pavel Volkov <sailor@lists.xtsubasa.org> - 2014-11-16 16:01 +0300
  Re: Using map() Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2014-11-17 11:09 +1100
    Re: Using map() Ned Batchelder <ned@nedbatchelder.com> - 2014-11-16 19:24 -0500
    Re: Using map() Chris Angelico <rosuav@gmail.com> - 2014-11-17 12:08 +1100
    Messages from code analysis tools (was: Using map()) Ben Finney <ben+python@benfinney.id.au> - 2014-11-17 12:21 +1100
    Re: Using map() Dan Stromberg <drsalists@gmail.com> - 2014-11-16 17:31 -0800
    Re: Messages from code analysis tools (was: Using map()) Chris Angelico <rosuav@gmail.com> - 2014-11-17 12:36 +1100
    Re: Messages from code analysis tools Ned Batchelder <ned@nedbatchelder.com> - 2014-11-16 20:49 -0500

csiph-web