RepeatingTimer.py

class RepeatingTimer(_Timer):
    def __init__(self, init_delay, interval, function, args=[], kwargs={}):
        _Timer.__init__(self, interval, function, *args, **kwargs)
        self.init_delay = init_delay

    def run(self):
        self.finished.wait(self.init_delay)
        self.function(*self.args, **self.kwargs)

        while not self.finished.is_set():
            self.finished.wait(self.interval)
            self.function(*self.args, **self.kwargs)

        self.finished.set()