Virtually the same concept of JavaScript's setInterval but for Python.
# examples/greet.py
from recurring_task import RecurringTask
# create a recurring task that prints "Hello world!" every 2 seconds
# note that this won't start the task
t = RecurringTask(2, lambda: print("Hello world!"))
# start is non-blocking, the task run in its own thread
t.start()
# stop the task when you're done
t.cancel()