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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def setup_beacons(self, before_connect=False):
        '''
        Set up the beacons.
        This is safe to call multiple times.
        '''
        self._setup_core()

        loop_interval = self.opts['loop_interval']
        new_periodic_callbacks = {}

        if 'beacons' not in self.periodic_callbacks:
            self.beacons = salt.beacons.Beacon(self.opts, self.functions)

            def handle_beacons():
                # Process Beacons
                beacons = None
                try:
                    beacons = self.process_beacons(self.functions)
                except Exception:
                    log.critical('The beacon errored: ', exc_info=True)
                if beacons and self.connected:
                    self._fire_master(events=beacons)

            new_periodic_callbacks['beacons'] = tornado.ioloop.PeriodicCallback(
                    handle_beacons, loop_interval * 1000)
            if before_connect:
                # Make sure there is a chance for one iteration to occur before connect
                handle_beacons()

        if 'cleanup' not in self.periodic_callbacks:
            new_periodic_callbacks['cleanup'] = tornado.ioloop.PeriodicCallback(
                    self._fallback_cleanups, loop_interval * 1000)

        # start all the other callbacks
        for periodic_cb in six.itervalues(new_periodic_callbacks):
            periodic_cb.start()

        self.periodic_callbacks.update(new_periodic_callbacks)