Apple Calendar (iCal) to Timex Datalink script

ical_dlink.py

#!/usr/bin/env python3

import subprocess
import tempfile

# Scrapes my calendar for output to my watch.
# Depends on:
# icalBuddy (https://github.com/ali-rantakari/icalBuddy)
# datalink tools from https://github.com/dfries/datalink_ironman

def getEvents():
    """
    Calls out to iCalBuddy and gets my events.
    :return:
    """
    s = subprocess.check_output(
        [
            'icalBuddy',
            '--bullet', '%%EVENT%%',
            '--includeOnlyEventsFromNowOn',
            '--excludeAllDayEvents',
            '--noCalendarNames',
            '--noRelativeDates',
            '--excludeEndDates',
            '-iep','title,datetime',
            '-df', '%m/%d',
            '-tf', '%H:%M',
            'eventsToday+7'
        ],
    )
    d = s.decode('unicode_escape')
    return d

def buddy_to_tupleset(buddy_output):
    """
    given the output of getEVents(), store it in a set of tuples.
    :param buddy_output:
    :return:
    """
    events = buddy_output.split('%%EVENT%%')
    events_s = set()
    for e in events:
        try:
            description, timestamp = e.splitlines()
            timestamp = timestamp.lstrip()
            date, time = timestamp.split(' at ')
            event_t = (date, time, description)
            events_s.add(event_t)
        except ValueError:
            pass # Probably fine.
    return events_s

def datalink_string(events_s):
    """
    Given the events_set, print out the datalink output.
    :param events_s:
    :return:
    """
    r_s = ""
    for event in events_s:
        date, time, description = event
        r_s += 'appointment = {date}, {time}, "{description}"\n'.format(date=date, time=time, description=description)
    return r_s

def send_to_watch(datalink_string):
    """
    Fires up ./setwatch and fires noise at your watch.
    :param datalink_string:
    :return:
    """
    with tempfile.NamedTemporaryFile(mode='w') as fp:
        fp.write(datalink_string)
        fp.flush()
        subprocess.run([
            '/Users/chrisswingler/src/datalink_ironman/datalink/setwatch',
            '-serial',
            '-model150',
            '-sort-app-by-datetime',
            '-all',
            fp.name
            ]
        )

if __name__ == "__main__":
    e = getEvents()
    events = buddy_to_tupleset(e)
    ds = datalink_string(events)
    send_to_watch(ds)