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Groups > comp.lang.python > #21666

Re: Enchancement suggestion for argparse: intuit type from default

From Roy Smith <roy@panix.com>
Newsgroups comp.lang.python
Subject Re: Enchancement suggestion for argparse: intuit type from default
Date 2012-03-15 09:28 -0400
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <roy-10B7E6.09280115032012@news.panix.com> (permalink)
References <87pqcefyka.fsf@benfinney.id.au> <20120315055908.GA8886@cskk.homeip.net> <mailman.665.1331806024.3037.python-list@python.org>

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In article <mailman.665.1331806024.3037.python-list@python.org>,
 Robert Kern <robert.kern@gmail.com> wrote:

> Yes. Not all type(default) types can be called with a string to produce a 
> valid 
> value. Note that "type=" is really a misnomer. argparse doesn't really want a 
> type object there; it wants a converter function that takes a string to an 
> object.

Orthogonal to my original suggestion, I agree that this is misnamed.  
I'm +1 on the idea of renaming it to conversion= or something like that 
(we'd need to keep type= around as a deprecated synonym for backwards 
compatability).  It's really hard to get your head around "type=open".

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Thread

Enchancement suggestion for argparse: intuit type from default roy@panix.com (Roy Smith) - 2012-03-13 17:08 -0400
  Re: Enchancement suggestion for argparse: intuit type from default Ben Finney <ben+python@benfinney.id.au> - 2012-03-14 08:35 +1100
    Re: Enchancement suggestion for argparse: intuit type from default Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2012-03-14 12:53 +0000
      Re: Enchancement suggestion for argparse: intuit type from default Ben Finney <ben+python@benfinney.id.au> - 2012-03-15 00:19 +1100
        Re: Enchancement suggestion for argparse: intuit type from default Roy Smith <roy@panix.com> - 2012-03-14 09:30 -0400
          Re: Enchancement suggestion for argparse: intuit type from default MRAB <python@mrabarnett.plus.com> - 2012-03-14 17:26 +0000
          Re: Enchancement suggestion for argparse: intuit type from default Ian Kelly <ian.g.kelly@gmail.com> - 2012-03-14 13:03 -0600
  Re: Enchancement suggestion for argparse: intuit type from default rusi <rustompmody@gmail.com> - 2012-03-14 03:22 -0700
  Re: Enchancement suggestion for argparse: intuit type from default Ulrich Eckhardt <ulrich.eckhardt@dominolaser.com> - 2012-03-14 13:26 +0100
  Re: Enchancement suggestion for argparse: intuit type from default John Nagle <nagle@animats.com> - 2012-03-14 16:32 -0700
    Re: Enchancement suggestion for argparse: intuit type from default Roy Smith <roy@panix.com> - 2012-03-14 20:52 -0400
      Re: Enchancement suggestion for argparse: intuit type from default Ben Finney <ben+python@benfinney.id.au> - 2012-03-15 12:22 +1100
        Re: Enchancement suggestion for argparse: intuit type from default Cameron Simpson <cs@zip.com.au> - 2012-03-15 16:59 +1100
        Re: Enchancement suggestion for argparse: intuit type from default Robert Kern <robert.kern@gmail.com> - 2012-03-15 10:06 +0000
          Re: Enchancement suggestion for argparse: intuit type from default Roy Smith <roy@panix.com> - 2012-03-15 09:28 -0400
            Re: Enchancement suggestion for argparse: intuit type from default Cameron Simpson <cs@zip.com.au> - 2012-03-16 08:18 +1100
      Re: Enchancement suggestion for argparse: intuit type from default MRAB <python@mrabarnett.plus.com> - 2012-03-15 02:10 +0000

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