Jalali datetime binding for python

Jalali, implementation, of, Python, datetime
pip install jdatetime==4.1.0



jdatetime is Jalali implementation of Python's datetime module


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pip install jdatetime


This module exactly follows Python Standard datetime module's methods http://docs.python.org/release/3.7.1/library/datetime.html

Also these methods are added to jdatetime.date and jdatetime.datetime :

    Convert gregorian to jalali and return jdatetime.date
    Convert current jalali date to gregorian and return datetime.date
    check if year is leap year
    algortim is based on http://en.wikipedia.org/wiki/Leap_year


>>> import jdatetime
>>> jdatetime.datetime.now()
jdatetime.datetime(1394, 12, 4, 8, 37, 31, 855729)
>>> jdatetime.date.today()
jdatetime.date(1394, 12, 4)


In order to get the date string in farsi you need to set the locale to fa_IR. The locale could be specified explicitly upon instantiation of date/datetime instances, or by setting a default locale.

Instance locales is named argument only:

import jdatetime
fa_date = jdatetime.date(1397, 4, 23, locale='fa_IR')
fa_datetime = jdatetime.datetime(1397, 4, 23, 11, 40, 30, locale='fa_IR')

date and datetime instances provide the method aslocale() to return a clone of the instance with the same timestamp, in a different locale.

Default Locale

It's possible to set the default locale, so all new instances created afterwards would use the desired locale, unless explicitly specified otherwise.

>>> import locale
>>> import jdatetime
>> jdatetime.datetime.now().strftime("%a, %d %b %Y %H:%M:%S")
u'Wed, 08 Ord 1395 20:47:32'
>>> locale.setlocale(locale.LC_ALL, "fa_IR")
>>> jdatetime.datetime.now().strftime("%a, %d %b %Y %H:%M:%S")
u'\u0686\u0647\u0627\u0631\u0634\u0646\u0628\u0647, 08 \u0627\u0631\u062f\u06cc\u0628\u0647\u0634\u062a 1395 20:47:56'

If your requirements demand to support different locales withing the same process, you could set the default locale per thread. New date and datetime instances created in each thread, will use the specified locale by default. This supports both Python threads, and greenlets.

import jdatetime
jdatetime.datetime.now().strftime('%A %B')
# u'\u062f\u0648\u0634\u0646\u0628\u0647 \u062e\u0631\u062f\u0627\u062f'


You can contribute to this project forking it from GitHub and sending pull requests.

First fork the repository and then clone it:

$ git clone git@github.com:<you>/python-jalali.git

Before committing, you can run all the above tests against all supported Python versions with tox. You need to install tox first:

$ pip install tox

And then you can run all tests:

$ tox

If you wish to limit the testing to specific Python version, you can parametrize the tox run:

$ tox -e py39

Release Steps

  • Bump the version in setup.py and jdatetime/__init__.py. We are using Semantic Versioning.
  • Add release notes in CHANGELOG.md
  • Commit and push the changes. Create a PR
  • After the PR is merged, create a release with a tag name like v<version>
  • Github Action creates the package and deploys it to pypi.