def call_repeatedly(interval, func, *args, **kwargs):
    stopped = Event()
    def loop():
        while not stopped.wait(interval):  # the first call is in `interval` secs
            try:
                func(*args)
            except Exception as e:
                logger.error(e);
                if kwargs.get('exception'):
                    kwargs.get('exception')(e) # SEND exception to the specified function if there is one.
                else:
                    raise Exception(e)
    Thread(target=loop).start()
    return stopped.set