code: def send(self, metric, value, timestamp=None, tags={}):
          
          if timestamp is None:
              timestamp = time.time()
          message = self.build_message(metric, value, timestamp, tags)
  
          if self.interval is None:
              self.send_socket(message)
          else:
              try:
                  self._queue.put_nowait(message)
              except queue.Full:
                  logger.error('queue full when sending {!r}'.format(message))
docs: Send given metric and (int or float) value to Graphite host.
          Performs send on background thread if "interval" was specified when
          creating this Sender.
  
          If a "tags" dict is specified, send the tags to the Graphite host along with the metric.