code: def reopen(self):
          
          if self._closed:
              self._worker = _EventLoggerThread(self._event_queue, self._ev_writer,
                                                self._flush_secs, self._sentinel_event)
              self._worker.start()
              self._closed = False
docs: Reopens the EventFileWriter.
          Can be called after `close()` to add more events in the same directory.
          The events will go into a new events file.
          Does nothing if the `EventFileWriter` was not closed.