scheduler example with datetime and dateutil

import sched
import time
import datetime
from dateutil.rrule import rrule, HOURLY, MINUTELY


def schdule(start, end, interval=2):
    scheduler = sched.scheduler(timefunc=time.time)
    now = datetime.datetime.now().replace(second=0, microsecond=0) + datetime.timedelta(minutes=1)
    for future in rrule(freq=MINUTELY, interval=interval, dtstart=now):
        scheduler.enterabs(future.timestamp(), 0, lambda *args, **kwargs: print(datetime.datetime.now()))
        scheduler.run()