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Validation in Python (was: raise None)

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From Ben Finney <ben+python@benfinney.id.au>
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Subject Validation in Python (was: raise None)
Date Thu, 31 Dec 2015 11:26:14 +1100
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Steven D'Aprano <steve@pearwood.info> writes:

> I have a lot of functions that perform the same argument checking each
> time:

Not an answer to the question you ask, but: Have you tried the data
validation library “voluptuous”?

    Voluptuous, despite the name, is a Python data validation library.
    It is primarily intended for validating data coming into Python as
    JSON, YAML, etc.

    It has three goals:

        Simplicity.
        Support for complex data structures.
        Provide useful error messages.

    <URL:https://pypi.python.org/pypi/voluptuous/>

Seems like a good way to follow Don't Repeat Yourself in code that needs
a lot of validation of inputs.

-- 
 \     “It's my belief we developed language because of our deep inner |
  `\                  need to complain.” —Jane Wagner, via Lily Tomlin |
_o__)                                                                  |
Ben Finney

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Thread

raise None Steven D'Aprano <steve@pearwood.info> - 2015-12-31 11:09 +1100
  Re: raise None Paul Rubin <no.email@nospam.invalid> - 2015-12-30 16:19 -0800
  Validation in Python (was: raise None) Ben Finney <ben+python@benfinney.id.au> - 2015-12-31 11:26 +1100
  Re: raise None Chris Angelico <rosuav@gmail.com> - 2015-12-31 11:38 +1100
    Re: raise None Steven D'Aprano <steve@pearwood.info> - 2015-12-31 12:26 +1100
      Re: raise None Ben Finney <ben+python@benfinney.id.au> - 2015-12-31 12:44 +1100
        Re: raise None Steven D'Aprano <steve@pearwood.info> - 2015-12-31 15:07 +1100
          Re: raise None Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2015-12-31 12:19 +0000
            Re: raise None Steven D'Aprano <steve@pearwood.info> - 2016-01-01 02:35 +1100
              Re: raise None Chris Angelico <rosuav@gmail.com> - 2016-01-01 02:53 +1100
              Re: raise None Oscar Benjamin <oscar.j.benjamin@gmail.com> - 2015-12-31 16:46 +0000
                Re: raise None Steven D'Aprano <steve@pearwood.info> - 2016-01-01 04:50 +1100
              Re: raise None "Martin A. Brown" <martin@linux-ip.net> - 2015-12-31 09:30 -0800
              Re: raise None Ben Finney <ben+python@benfinney.id.au> - 2016-01-01 07:18 +1100
                Re: raise None Johannes Bauer <dfnsonfsduifb@gmx.de> - 2016-01-02 12:47 +0100
              Re: raise None Chris Angelico <rosuav@gmail.com> - 2016-01-01 09:48 +1100
                Re: raise None Steven D'Aprano <steve@pearwood.info> - 2016-01-04 16:19 +1100
                Re: raise None Dan Sommers <dan@tombstonezero.net> - 2016-01-04 06:09 +0000
                Re: raise None Rustom Mody <rustompmody@gmail.com> - 2016-01-03 22:39 -0800
              Re: raise None Ben Finney <ben+python@benfinney.id.au> - 2016-01-01 10:27 +1100
                Re: raise None Marko Rauhamaa <marko@pacujo.net> - 2016-01-01 02:29 +0200
                Re: raise None Steven D'Aprano <steve@pearwood.info> - 2016-01-04 16:19 +1100
                Re: raise None Rustom Mody <rustompmody@gmail.com> - 2016-01-03 21:53 -0800
                Re: raise None Rustom Mody <rustompmody@gmail.com> - 2016-01-04 03:55 -0800
                Re: raise None Rustom Mody <rustompmody@gmail.com> - 2016-01-03 21:53 -0800
              Re: raise None Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-31 23:36 +0000
              Re: raise None Chris Angelico <rosuav@gmail.com> - 2016-01-01 10:39 +1100
              Re: raise None Chris Angelico <rosuav@gmail.com> - 2016-01-01 10:41 +1100
              Re: raise None Rustom Mody <rustompmody@gmail.com> - 2016-01-03 19:04 -0800
                Re: raise None Chris Angelico <rosuav@gmail.com> - 2016-01-04 14:31 +1100
                Re: raise None Steven D'Aprano <steve@pearwood.info> - 2016-01-04 14:48 +1100
                Re: raise None Chris Angelico <rosuav@gmail.com> - 2016-01-04 14:56 +1100
                Re: raise None Rustom Mody <rustompmody@gmail.com> - 2016-01-03 20:46 -0800
              Re: raise None Christian Gollwitzer <auriocus@gmx.de> - 2016-01-04 08:28 +0100
      Re: raise None Chris Angelico <rosuav@gmail.com> - 2015-12-31 13:12 +1100
      Re: raise None Cameron Simpson <cs@zip.com.au> - 2015-12-31 15:03 +1100
        Re: raise None Steven D'Aprano <steve@pearwood.info> - 2015-12-31 16:12 +1100
          Re: raise None Cameron Simpson <cs@zip.com.au> - 2015-12-31 16:45 +1100
  Re: raise None Terry Reedy <tjreedy@udel.edu> - 2015-12-30 23:00 -0500
  Re: raise None Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-12-31 15:58 +0000
  Re: raise None Johannes Bauer <dfnsonfsduifb@gmx.de> - 2015-12-31 17:17 +0100

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