Improve current implementation of a setInterval

by

To call a function repeatedly with interval seconds between the calls and the ability to cancel future calls:

from threading import Event, Thread

def call_repeatedly(interval, func, *args):
    stopped = Event()
    def loop():
        while not stopped.wait(interval): # the first call is in `interval` secs
            func(*args)
    Thread(target=loop).start()    
    return stopped.set

Example:

cancel_future_calls = call_repeatedly(60, print, "Hello, World")
# ...
cancel_future_calls()

Note: this version waits around interval seconds after each call no matter how long func(*args) takes. If metronome-like ticks are desired then the execution could be locked with a timer(): stopped.wait(interval) could be replaced with stopped.wait(interval - timer() % interval) where timer() defines the current time (it may be relative) in seconds e.g., time.time(). See What is the best way to repeatedly execute a function every x seconds in Python?

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