Overview

Calendra is a Python module that offers classes able to handle calendars, list legal / religious holidays and gives working-day-related computation functions.

History

Calendra is a fork of Workalendar designed to be more extensible and introspectable, adding interfaces where Workalendar is philosophically opposed for the sake of simplicity.

What can Calendra do that Workalendar cannot?

• Provides descriptions for holidays for the "day indicated" for each Holiday (such as '3rd Monday in August').
• Keeps distinct the indicated and observed dates for Holidays, such that it's possible to determine on what day a given holiday is observed.
• Allows the number of Holidays in a calendar year to be counted.
• Consolidates observance logic in the core code rather than requiring each calendar implementation to implement its own.

Status

The project is stable and in production use. Calendra follows the principles of semver for released verisons.

Usage sample

>>> from datetime import date
>>> from calendra.europe import France
>>> cal = France()
>>> cal.holidays(2012)
[(datetime.date(2012, 1, 1), 'New year'),
 (datetime.date(2012, 4, 9), 'Easter Monday'),
 (datetime.date(2012, 5, 1), 'Labour Day'),
 (datetime.date(2012, 5, 8), 'Victory in Europe Day'),
 (datetime.date(2012, 5, 17), 'Ascension Day'),
 (datetime.date(2012, 5, 28), 'Whit Monday'),
 (datetime.date(2012, 7, 14), 'Bastille Day'),
 (datetime.date(2012, 8, 15), 'Assumption of Mary to Heaven'),
 (datetime.date(2012, 11, 1), "All Saints' Day"),
 (datetime.date(2012, 11, 11), 'Armistice Day'),
 (datetime.date(2012, 12, 25), 'Christmas')]
>>> cal.is_working_day(date(2012, 12, 25))  # it's Christmas
False
>>> cal.is_working_day(date(2012, 12, 30))  # it's Sunday
False
>>> cal.is_working_day(date(2012, 12, 26))
True
>>> cal.add_working_days(date(2012, 12, 23), 5)  # 5 working days after Xmas
datetime.date(2012, 12, 31)

External dependencies

You may want to install python-dev and/or python3-dev on your machine to either run the installation or run tests via tox.

Tests

Travis status:

To run test, just install tox with pip install tox and run:

tox

from the command line.

Available Calendars

Europe

• Austria
• Belgium
• Bulgaria
• Croatia
• Cyprus
• Czech Republic
• Denmark
• Estonia
• European Central Bank
• Finland
• France
• France (Alsace / Moselle)
• Germany
• Greece
• Hungary
• Iceland
• Ireland
• Italy
• Latvia
• Luxembourg
• Malta
• Netherlands
• Norway
• Poland
• Portugal
• Romania
• Slovakia
• Sweden
• United Kingdom (incl. Northern Ireland)
• Spain (incl. Catalonia)
• Slovenia
• Switzerland * Vaud

America

• Brazil (all states, cities and for bank transactions, except the city of Viana)
• Chile
• Colombia
• Mexico
• Panama
• United States of America (including state holidays)
• Canada (including provincial and territory holidays)

Asia

• Hong Kong
• Japan
• Malaysia
• Qatar
• Singapore
• South Korea
• Taiwan

Oceania

• Australia (incl. its different states)
• Marshall Islands

Africa

• Algeria
• Benin
• Ivory Coast
• Madagascar
• São Tomé
• South Africa

And more to come (I hope!)

Caveats

Please take note that some calendars are not 100% accurate. The most common example is the Islamic calendar, where some computed holidays are not exactly on the same official day decided by religious authorities, and this may vary country by country. Whenever it's possible, try to adjust your results with the official data provided by the adequate authorities.

Contributing

Please read our CONTRIBUTING.rst document to discover how you can contribute to calendra. Pull-requests are very welcome.

License

This library is published under the terms of the MIT License. Please check the LICENSE file for more details.