build_event.py

from icalendar import Calendar, Event
import pytz
from datetime import datetime, timedelta


def build_event_duration(
    summary, description, start, duration, location, freq_of_recurrence, until
):

    """
    Return an event that can be added to a calendar

    summary: summary of the event
    description: description of the event
    location: self explanatory
    start, end, stamp: These are datetime.datetime objects
    freq_of_recurrence: frequency of recurrence, string which can take the
    values daily, weekly, monthly, etc.
    until: A datetime.datetime object which signifies when the recurrence will
    end
    """

    event = Event()
    event.add("summary", summary)
    event.add("description", description)
    event.add("dtstart", start)
    event.add("duration", timedelta(hours=duration))
    event.add("dtstamp", datetime.now())
    event.add("location", location)
    event.add("rrule", {"FREQ": freq_of_recurrence, "UNTIL": until})

    return event


def generateIndiaTime(year, month, date, hour, minutes):
    return datetime(
        year, month, date, hour, minutes, tzinfo=pytz.timezone("Asia/Kolkata")
    )


if __name__ == "__main__":
    cal = Calendar()
    cal.add("prodid", "-//Your Timetable generated by GYFT//mxm.dk//")
    cal.add("version", "1.0")

    example_event = build_event_duration(
        "example event",
        "example event's description 2!",
        generateIndiaTime(2016, 8, 22, 19, 0),
        generateIndiaTime(2016, 8, 22, 20, 0),
        "imaginary location!",
        "weekly",
        generateIndiaTime(2016, 11, 20, 12, 0),
    )

    cal.add_component(example_event)

    with open("timetable.ics", "wb") as f:
        f.write(cal.to_ical())