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

Groups > comp.lang.python > #92652

Re: Set a flag on the function or a global?

Path csiph.com!usenet.pasdenom.info!weretis.net!feeder1.news.weretis.net!feeder.erje.net!1.eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed1.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path <python@mrabarnett.plus.com>
X-Original-To python-list@python.org
Delivered-To python-list@mail.python.org
X-Spam-Status OK 0.006
X-Spam-Evidence '*H*': 0.99; '*S*': 0.00; 'calls.': 0.07; 'override': 0.07; 'enhancements': 0.09; 'global,': 0.09; 'naturally': 0.09; 'script,': 0.09; 'specifying': 0.09; 'itself.': 0.11; 'argument': 0.15; 'explicitly': 0.15; 'importing': 0.15; 'from:addr:mrabarnett.plus.com': 0.16; 'from:addr:python': 0.16; 'from:name:mrab': 0.16; 'imo.': 0.16; 'message- id:@mrabarnett.plus.com': 0.16; 'received:192.168.1.4': 0.16; 'received:84.93': 0.16; 'received:84.93.230': 0.16; 'wrote:': 0.16; 'thoughts': 0.18; 'meant': 0.22; '2015': 0.23; 'module': 0.23; 'split': 0.23; 'import': 0.24; 'header:In-Reply-To:1': 0.24; 'header:User-Agent:1': 0.26; 'not.': 0.27; 'methods.': 0.29; 'read,': 0.29; 'function': 0.30; '15,': 0.31; 'keyword': 0.31; 'received:84': 0.32; "d'aprano": 0.33; 'enhanced': 0.33; 'steven': 0.33; 'subject:?': 0.34; 'could': 0.35; 'to:addr:python-list': 0.35; 'false': 0.35; 'filter': 0.35; 'but': 0.36; 'there': 0.36; 'monday,': 0.36; 'two': 0.37; 'should': 0.37; 'setting': 0.37; 'subject:: ': 0.37; 'monitor': 0.38; 'rather': 0.38; 'version': 0.38; 'to:addr:python.org': 0.39; 'received:192': 0.39; 'skip:e 20': 0.39; 'subject:the': 0.40; 'some': 0.40; 'easy': 0.60; 'back': 0.61; 'default': 0.61; 'email addr:gmail.com': 0.64; 'believe': 0.67; 'obvious': 0.72; 'alone,': 0.84; "they'd": 0.84; 'utc-7,': 0.84; 'subject:Set': 0.91; 'not:': 0.93
X-CM-Score 0.00
X-CNFS-Analysis v=2.1 cv=OoyysHLt c=1 sm=1 tr=0 a=0nF1XD0wxitMEM03M9B4ZQ==:117 a=0nF1XD0wxitMEM03M9B4ZQ==:17 a=0Bzu9jTXAAAA:8 a=QrohdLjRRo4A:10 a=IkcTkHD0fZMA:10 a=EBOSESyhAAAA:8 a=pGLkceISAAAA:8 a=3xKUVqDsPsIA0J8MfvgA:9 a=QEXdDO2ut3YA:10
X-AUTH mrabarnett@:2500
Date Tue, 16 Jun 2015 01:35:59 +0100
From MRAB <python@mrabarnett.plus.com>
User-Agent Mozilla/5.0 (Windows NT 6.3; WOW64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0
MIME-Version 1.0
To python-list@python.org
Subject Re: Set a flag on the function or a global?
References <557f6676$0$21718$c3e8da3@news.astraweb.com> <4449bc52-4dba-486c-b426-7095e228a316@googlegroups.com>
In-Reply-To <4449bc52-4dba-486c-b426-7095e228a316@googlegroups.com>
Content-Type text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding 7bit
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.494.1434414969.13271.python-list@python.org> (permalink)
Lines 54
NNTP-Posting-Host 2001:888:2000:d::a6
X-Trace 1434414969 news.xs4all.nl 2842 [2001:888:2000:d::a6]:40137
X-Complaints-To abuse@xs4all.nl
Xref csiph.com comp.lang.python:92652

Show key headers only | View raw

On 2015-06-16 01:24, sohcahtoa82@gmail.com wrote:
> On Monday, June 15, 2015 at 4:57:53 PM UTC-7, Steven D'Aprano wrote:
>> I have a function in a module which is intended to be used by
>> importing that name alone, then used interactively:
>>
>> from module import edir edir(args)
>>
>>
>> edir is an enhanced version of dir, and one of the enhancements is
>> that you can filter out dunder methods. I have reason to believe
>> that people are split on their opinion on whether dunder methods
>> should be shown by default or not: some people want to see them,
>> others do not. Since edir is meant to be used interactively, I want
>> to give people a setting to control whether they get dunders by
>> default or not.
>>
>> I have two ideas for this, a module-level global, or a flag set on
>> the function object itself. Remember that the usual way of using
>> this will be "from module import edir", there are two obvious ways
>> to set the global:
>>
>> import module module.dunders = False
>>
>> # -or-
>>
>> edir.__globals__['dunders'] = False
>>
>>
>> Alternatively, I can use a flag set on the function object itself:
>>
>> edir.dunders = False
>>
>>
>> Naturally you can always override the default by explicitly
>> specifying a keyword argument edir(obj, dunders=flag).
>>
>> Thoughts and feedback? Please vote: a module global, or a flag on
>> the object? Please give reasons, and remember that the function is
>> intended for interactive use.
>>
>>
>> -- Steven D'Aprano
>
> Using a keyword argument for the edir function is the most intuitive
> and easy to read, IMO.
>
> Also, if two people are working on the same script, it could create
> problems if one person wants to filter them, but the other doesn't.
> That would create a state that they would both have to monitor and
> keep setting back and forth, rather than each one just setting an
> argument on their calls.
>
But it's meant to be used interactively. If they're using it in a
script, they'd most likely set the argument appropriately.

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

Thread

Set a flag on the function or a global? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-15 23:57 +0000
  Re: Set a flag on the function or a global? Chris Angelico <rosuav@gmail.com> - 2015-06-16 10:07 +1000
  Re: Set a flag on the function or a global? Ethan Furman <ethan@stoneleaf.us> - 2015-06-15 17:19 -0700
  Re: Set a flag on the function or a global? Ben Finney <ben+python@benfinney.id.au> - 2015-06-16 10:20 +1000
    Re: Set a flag on the function or a global? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-16 19:07 +1000
  Re: Set a flag on the function or a global? Ethan Furman <ethan@stoneleaf.us> - 2015-06-15 17:21 -0700
  Re: Set a flag on the function or a global? sohcahtoa82@gmail.com - 2015-06-15 17:24 -0700
    Re: Set a flag on the function or a global? MRAB <python@mrabarnett.plus.com> - 2015-06-16 01:35 +0100
      Re: Set a flag on the function or a global? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-16 18:18 +1000
        Re: Set a flag on the function or a global? Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2015-06-16 13:45 +0100
          Re: Set a flag on the function or a global? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-16 22:46 +0000
        Re: Set a flag on the function or a global? Cameron Simpson <cs@zip.com.au> - 2015-06-17 09:51 +1000
          Re: Set a flag on the function or a global? Steven D'Aprano <steve@pearwood.info> - 2015-06-18 00:59 +1000
            Re: Set a flag on the function or a global? Laura Creighton <lac@openend.se> - 2015-06-17 17:06 +0200
              Re: Set a flag on the function or a global? Steven D'Aprano <steve@pearwood.info> - 2015-06-18 01:55 +1000
                Documenting a function signature (was: Set a flag on the function or a global?) Ben Finney <ben+python@benfinney.id.au> - 2015-06-18 10:04 +1000
                Re: Documenting a function signature (was: Set a flag on the function or a global?) Ian Kelly <ian.g.kelly@gmail.com> - 2015-06-17 18:10 -0600
                Re: Documenting a function signature (was: Set a flag on the function or a global?) Chris Angelico <rosuav@gmail.com> - 2015-06-18 10:14 +1000
                Re: Documenting a function signature (was: Set a flag on the function or a global?) random832@fastmail.us - 2015-06-18 08:37 -0400
                Re: Documenting a function signature (was: Set a flag on the function or a global?) Laura Creighton <lac@openend.se> - 2015-06-18 23:38 +0200
                Re: Documenting a function signature Ben Finney <ben+python@benfinney.id.au> - 2015-06-19 10:41 +1000
  Re: Set a flag on the function or a global? Ron Adam <ron3200@gmail.com> - 2015-06-15 20:24 -0400
    Re: Set a flag on the function or a global? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-16 19:15 +1000
      Re: Set a flag on the function or a global? Ron Adam <ron3200@gmail.com> - 2015-06-16 07:02 -0400
  Re: Set a flag on the function or a global? Chris Angelico <rosuav@gmail.com> - 2015-06-16 10:32 +1000
  Re: Set a flag on the function or a global? Paul Rubin <no.email@nospam.invalid> - 2015-06-15 17:37 -0700
    Re: Set a flag on the function or a global? Ethan Furman <ethan@stoneleaf.us> - 2015-06-15 17:53 -0700
      Re: Set a flag on the function or a global? Paul Rubin <no.email@nospam.invalid> - 2015-06-15 19:04 -0700
    Re: Set a flag on the function or a global? MRAB <python@mrabarnett.plus.com> - 2015-06-16 02:15 +0100
    Re: Set a flag on the function or a global? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-16 18:30 +1000
  Re: Set a flag on the function or a global? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-06-16 07:06 +0100
    Re: Set a flag on the function or a global? Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2015-06-16 19:28 +1000
  Re: Set a flag on the function or a global? Jonas Wielicki <jonas@wielicki.name> - 2015-06-16 12:00 +0200
  Re: Set a flag on the function or a global? Michael Torrie <torriem@gmail.com> - 2015-06-16 07:44 -0600
  Re: Set a flag on the function or a global? Michael Torrie <torriem@gmail.com> - 2015-06-16 07:56 -0600
  Re: Set a flag on the function or a global? Peter Otten <__peter__@web.de> - 2015-06-16 15:59 +0200
  Re: Set a flag on the function or a global? Ethan Furman <ethan@stoneleaf.us> - 2015-06-16 07:57 -0700

csiph-web