Simple module to parse ISO 8601 dates

pip install iso8601

Documentation: https://pyiso8601.readthedocs.org/

PyPI: https://pypi.org/project/iso8601/

Source: https://github.com/micktwomey/pyiso8601

This module parses the most common forms of ISO 8601 date strings (e.g. 2007-01-14T20:34:22+00:00) into datetime objects.

import iso8601
iso8601.parse_date("2007-01-25T12:00:00Z")
datetime.datetime(2007, 1, 25, 12, 0, tzinfo=<iso8601.Utc>)

See the LICENSE file for the license this package is released under.

If you want more full featured parsing look at:

https://arrow.readthedocs.io - arrow
https://pendulum.eustace.io - pendulum
https://labix.org/python-dateutil - python-dateutil
https://docs.python.org/3/library/datetime.html#datetime.datetime.fromisoformat - Yes, Python 3 has built in parsing too!

Parsed Formats

You can parse full date + times, or just the date. In both cases a datetime instance is returned but with missing times defaulting to 0, and missing days / months defaulting to 1.

Dates

YYYY-MM-DD
YYYYMMDD
YYYY-MM (defaults to 1 for the day)
YYYY (defaults to 1 for month and day)

Times

hh:mm:ss.nn
hhmmss.nn
hh:mm (defaults to 0 for seconds)
hhmm (defaults to 0 for seconds)
hh (defaults to 0 for minutes and seconds)

Time Zones

Nothing, will use the default timezone given (which in turn defaults to UTC).
Z (UTC)
+/-hh:mm
+/-hhmm
+/-hh

Where it Differs From ISO 8601

Known differences from the ISO 8601 spec:

You can use a " " (space) instead of T for separating date from time.
Days and months without a leading 0 (2 vs 02) will be parsed.
If time zone information is omitted the default time zone given is used (which in turn defaults to UTC). Use a default of None to yield naive datetime instances.

References

https://en.wikipedia.org/wiki/ISO_8601
https://www.cl.cam.ac.uk/~mgk25/iso-time.html - simple overview
https://web.archive.org/web/20090309040208/http://hydracen.com/dx/iso8601.htm - more detailed enumeration of valid formats.

Testing

poetry install
poetry run nox

Note that you need all the pythons installed to perform a tox run (see below). pyenv helps hugely, use pyenv install for the versions you need then use 'pyenv local version ...' to link them in (the tox-pyenv plugin will pick them up).

Alternatively, to test only with your current python:

poetry install
pytest

Releasing

just prepare-release
just do-release

Supported Python Versions

Tested against:

Python 3.7
Python 3.8
Python 3.9
Python 3.10
Python 3.11
Python 3.12
PyPy 3

Python 3 versions < 3.7 are untested but should work.

Changes

See CHANGELOG.md <https://github.com/micktwomey/pyiso8601/blob/main/CHANGELOG.md>_.

Package profile

iso8601

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