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Groups > comp.lang.python > #28628

Parsing ISO date/time strings - where did the parser go?

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In Python 2.7:

   I want to parse standard ISO date/time strings such as

	2012-09-09T18:00:00-07:00

into Python "datetime" objects.  The "datetime" object offers
an output method , datetimeobj.isoformat(), but not an input
parser.  There ought to be

	classmethod datetime.fromisoformat(s)

but there isn't.  I'd like to avoid adding a dependency on
a third party module like "dateutil".

The "Working with time" section of the Python wiki is so
ancient it predates "datetime", and says so.

There's an iso8601 module on PyPi, but it's abandoned; it hasn't been
updated since 2007 and has many outstanding issues.

There are mentions of "xml.utils.iso8601.parse" in
various places, but the "xml" module that comes
with Python 2.7 doesn't have xml.utils.

http://www.seehuhn.de/pages/pdate
says:

"Unfortunately there is no easy way to parse full ISO 8601 dates using
the Python standard library."

It looks like this was taken out of "xml" at some point,
but not moved into "datetime".

				John Nagle

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Thread

Parsing ISO date/time strings - where did the parser go? John Nagle <nagle@animats.com> - 2012-09-06 12:27 -0700
  Re: Parsing ISO date/time strings - where did the parser go? Paul Rubin <no.email@nospam.invalid> - 2012-09-06 12:51 -0700
    Re: Parsing ISO date/time strings - where did the parser go? John Nagle <nagle@animats.com> - 2012-09-06 13:34 -0700
      Re: Parsing ISO date/time strings - where did the parser go? Miki Tebeka <miki.tebeka@gmail.com> - 2012-09-06 16:27 -0700
      Re: Parsing ISO date/time strings - where did the parser go? John Gleeson <jdgleeson@mac.com> - 2012-09-08 18:20 -0600
        Re: Parsing ISO date/time strings - where did the parser go? John Nagle <nagle@animats.com> - 2012-09-08 20:51 -0700
          Re: Parsing ISO date/time strings - where did the parser go? Roy Smith <roy@panix.com> - 2012-09-09 06:15 -0400
            Re: Parsing ISO date/time strings - where did the parser go? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-09 12:20 +0100
  Re: Parsing ISO date/time strings - where did the parser go? Thomas Jollans <t@jollybox.de> - 2012-09-06 21:44 +0200
    Re: Parsing ISO date/time strings - where did the parser go? Roy Smith <roy@panix.com> - 2012-09-09 08:14 -0400
      Re: Parsing ISO date/time strings - where did the parser go? "Rhodri James" <rhodri@wildebst.demon.co.uk> - 2012-09-10 22:46 +0100
        Re: Parsing ISO date/time strings - where did the parser go? Chris Angelico <rosuav@gmail.com> - 2012-09-11 08:51 +1000
          Re: Parsing ISO date/time strings - where did the parser go? Roy Smith <roy@panix.com> - 2012-09-10 21:12 -0400
            Re: Parsing ISO date/time strings - where did the parser go? Ben Finney <ben+python@benfinney.id.au> - 2012-09-12 02:00 +1000
  Re: Parsing ISO date/time strings - where did the parser go? Dave Angel <d@davea.name> - 2012-09-06 15:54 -0400
    Re: Parsing ISO date/time strings - where did the parser go? Roy Smith <roy@panix.com> - 2012-09-06 19:44 -0400
      Re: Parsing ISO date/time strings - where did the parser go? André Malo <ndparker@gmail.com> - 2012-09-08 20:12 +0200
  Re: Parsing ISO date/time strings - where did the parser go? Roy Smith <roy@panix.com> - 2012-09-06 19:34 -0400
  Re: Parsing ISO date/time strings - where did the parser go? Terry Reedy <tjreedy@udel.edu> - 2012-09-06 22:12 -0400
  Re: Parsing ISO date/time strings - where did the parser go? Pete Forman <petef4+usenet@gmail.com> - 2012-09-12 13:31 +0100

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