Calendar API Client

A Python 3.12+ client for Calendar API

Easy and free registration to Calendar API

Documentation: Learn more about the client and Calendar API

Features

• Fully typed
• Minimal dependencies
• Automatic conversion of Json responses to Python Objects
• dataclasses based models (Standard library)
• Modern Http client based on httpxyz
• .toml file configuration for advanced usage (Timeout, proxy, certs, ...)

Presentation

Calendar API covers the holidays and business days domains while providing to Analysts, developers and businesses a centralized service for needs such as:

• Orchestration and Scheduling of tasks or jobs
• Data analysis: Finding missing dates in a dataset or aligning many datasets
• Data Quality
• Integration with a Date-Picker for UI uses. see tutorial in the product page
• Integration with Airflow by using the advanced configuration of the client pycalendar-api

Quickstart

Install from PyPi

pip install pycalendar-api

Ensure that you are registered, if not, you can Register for free

Instanciate the API Client by providing one the active APIKeys from your console

from pycalendar_api import CalendarApi, to_date  # Util function for date creation

>>> api = CalendarApi('YOUR_API_KEY')
>>> print(api.health())
ApiHealth(api_status="UP", appname="calendar-api", timestamp=datetime.datetime.now())

Using the environment variable PYCALENDAR_APIKEY

# Ensure that the environment variable is defined
# export PYCALENDAR_APIKEY = YOUR_API_KEY
from pycalendar_api import CalendarApi, to_date  # Util function for date creation

>>> api = CalendarApi.from_env()
>>> print(api.health())
ApiHealth(api_status="UP", appname="calendar-api", timestamp=datetime.datetime.now())

Holidays API

Holidays domain of Calendar API.

• Check if a date is a holiday

from pycalendar_api import CalendarApi, to_date

api = CalendarApi('YOUR_API_KEY') # or api = CalendarApi.from_env()

# Check if a date is a Holiday
>>> result = api.holidays.is_holiday(to_date('14/01/2025'))
>>> print(result)
HolidayCheckResult(
    date=datetime.date(2025, 1, 14), is_holiday=True,
    description="Nouvel An Amazigh", holiday_type=<CalHolidayType.NATIONAL: 'National'>,
    status=<CalHolidayStatus.OFFICIAL: 'Official'>, country_code='MA'
)

• List holidays of a year or many years

>>> result = api.holidays.year(2025)
>>> print(result)
[
    Holiday(description="Jour de l'AN", day=1, month=1, date=datetime.date(2025, 1, 1), holiday_type=<CalHolidayType.NATIONAL: 'National'>, status=<CalHolidayStatus.OFFICIAL: 'Official'>, country_code='MA'),
    Holiday(description="Manifeste de l'Indépendance", day=11, month=1, date=datetime.date(2025, 1, 11), holiday_type=<CalHolidayType.NATIONAL: 'National'>, status=<CalHolidayStatus.OFFICIAL: 'Official'>, country_code='MA'),
    Holiday(description="Nouvel An Amazigh", day=14, month=1, date=datetime.date(2025, 1, 14), holiday_type=<CalHolidayType.NATIONAL: 'National'>, status=<CalHolidayStatus.OFFICIAL: 'Official'>, country_code='MA'),
    ...,
]

# List Holidays of many years
>>> result = api.holidays.years(list(range(2017, 2027)))
>>> print(result)
[
    Holiday(description="Jour de l'AN", day=1, month=1, date=datetime.date(2025, 1, 1), holiday_type=<CalHolidayType.NATIONAL: 'National'>, status=<CalHolidayStatus.OFFICIAL: 'Official'>, country_code='MA'),
    Holiday(description="Manifeste de l'Indépendance", day=11, month=1, date=datetime.date(2025, 1, 11), holiday_type=<CalHolidayType.NATIONAL: 'National'>, status=<CalHolidayStatus.OFFICIAL: 'Official'>, country_code='MA'),
    Holiday(description="Nouvel An Amazigh", day=14, month=1, date=datetime.date(2025, 1, 14), holiday_type=<CalHolidayType.NATIONAL: 'National'>, status=<CalHolidayStatus.OFFICIAL: 'Official'>, country_code='MA'),
    ...,
]

Business Days API

Business days domain of Calendar API.

Bdays operations

• Fetch the next or previous Business day

# Next Business day
result = api.bdays.next_date(to_date('13/01/2025'))
>>> print(result)
NextDate(date=datetime.date(2025, 1, 13), next_date=datetime.date(2025, 1, 15))

# Previous Business day
result = api.bdays.previous_date(to_date('15/01/2025'))
>>> print(result)
PreviousDate(date=datetime.date(2025, 1, 15), previous_date=datetime.date(2025, 1, 13))

• List Business days of a year or a month

# Business days of a year
result = api.bdays.bdays_of(2025)
>>> print(result)
DateSeries(
   ref='bdays-2025', min_date='2025-01-02', max_date='2025-12-31', freq=<CalFreq.DAILY: 'D'>, nitems=247,
   serie=SortedSet([datetime.date(2025, 1, 2), datetime.date(2025, 1, 3), datetime.date(2025, 1, 6), ..., datetime.date(2025, 12, 29), datetime.date(2025, 12, 30), datetime.date(2025, 12, 31)])
)

# Business days of a month
result = api.bdays.bdays_of(2025, month=6)
>>> print(result)
DateSeries(
   ref='bdays-2025-06', min_date='2025-06-02', max_date='2025-06-30', freq=<CalFreq.DAILY: 'D'>, nitems=19,
   serie=SortedSet([datetime.date(2025, 6, 2), datetime.date(2025, 6, 3), datetime.date(2025, 6, 4), datetime.date(2025, 6, 5), ..., datetime.date(2025, 6, 25), datetime.date(2025, 6, 26), datetime.date(2025, 6, 30)])
)

• Count or List Business days between 2 dates

# Count Business days between 2 dates
>>> count = api.bdays.count(to_date('02/01/2025'), to_date('31/12/2025'))
>>> print(count)
DaysCount(start_date=datetime.date(2025, 1, 2), end_date=datetime.date(2025, 12, 31), count=247, freq=<CalFreq.DAILY: 'D'>)

# List Business days between 2 dates
>>> between = api.bdays.between(to_date('02/01/2025'), to_date('31/12/2025'))
>>> print(between)
DateSeries(
   ref='bdays', min_date='2025-01-02', max_date='2025-12-31', freq=<CalFreq.DAILY: 'D'>, nitems=247,
   serie=SortedSet([datetime.date(2025, 1, 2), datetime.date(2025, 1, 3), datetime.date(2025, 1, 6), ..., datetime.date(2025, 12, 29), datetime.date(2025, 12, 30), datetime.date(2025, 12, 31)])
)

Spans: Start/End of periods

Calculate the interval composed of the start and end dates of a given period. The start and end dates are open business days.

Successive intervals can be linked

# =============== SPANS: Start/End of periods ===============
# Year 2025 span
>>> span_year = api.bdays.span(2025)
>>> print(span_year)
CalSpan(start_date=datetime.date(2024, 12, 31), end_date=datetime.date(2025, 12, 31), year=2025, semester=None, quarter=None, month=None, country_code='MA')

# 1st Semester of year 2025
>>> span_s1 = api.bdays.span(2025, semester=1)
>>> print(span_s1)
CalSpan(start_date=datetime.date(2024, 12, 31), end_date=datetime.date(2025, 6, 30), year=2025, semester=1, quarter=None, month=None, country_code='MA')

# 3rd Quarter of year 2025
>>> span_quarter = api.bdays.span(2025, quarter=3)
>>> print(span_quarter)
CalSpan(start_date=datetime.date(2025, 6, 30), end_date=datetime.date(2025, 9, 30), year=2025, semester=None, quarter=3, month=None, country_code='MA')

# Month 7 of year 2025 (July) 
>>> span_month = api.bdays.span(2025, month=7)
>>> print(span_month)
CalSpan(start_date=datetime.date(2025, 6, 30), end_date=datetime.date(2025, 7, 31), year=2025, semester=None, quarter=None, month=7, country_code='MA')

Enum properties

Those properties are present in the Response objects and are used as query parameters.

• Holiday Type (StrEnum)

A Holiday has one of those types

• HolidayStatus (StrEnum)

Those properties concern the religious holidays which are Estimated before the moon sighting, once confirmed their status change to Official.

Consider using polling (Every Hour) for religious holidays which are estimated.

Support

If you find any bug or issue please let us know by:

• Mailing us at: Support
• Filing an issue in the repository: Project Repository
• Fill the Contact Form