code: def stats(self, query=None, target=None):
          
          with self.lock:
              if not query:
                  self.send('STATS')
              elif not target and query:
                  self.send('STATS %s' % query)
              else:
                  self.send('STATS %s %s' % (query, target))
              stat_lines = []
              while self.readable():
                  msg = self._recv()
                  if msg[1] == '219':
                      break
                  else:
                      stat_lines.append(msg[3].replace(':', '', 1))
              return stat_lines
docs: Get the server's STATS information.
          Optional arguments:
          * query=None - STATS Query.
          * target=None - Target server.