Timeloop

Timeloop is a service that can be used to run periodic tasks after a certain interval.

Each job runs on a separate thread and when the service is shut down, it waits till all tasks currently being executed are completed.

Inspired by this blog here

Installation

pip install timeloop

Writing jobs

import time

from timeloop import Timeloop
from datetime import timedelta

tl = Timeloop()

@tl.job(interval=timedelta(seconds=2))
def sample_job_every_2s():
    print "2s job current time : {}".format(time.ctime())

@tl.job(interval=timedelta(seconds=5))
def sample_job_every_5s():
    print "5s job current time : {}".format(time.ctime())


@tl.job(interval=timedelta(seconds=10))
def sample_job_every_10s():
    print "10s job current time : {}".format(time.ctime())

Start time loop in separate thread

By default timeloop starts in a separate thread.

Please do not forget to call tl.stop before exiting the program, Or else the jobs wont shut down gracefully.

tl.start()

while True:
  try:
    time.sleep(1)
  except KeyboardInterrupt:
    tl.stop()
    break

Start time loop in main thread

Doing this will automatically shut down the jobs gracefully when the program is killed, so no need to call tl.stop

tl.start(block=True)

Author

Sankalp Jonna