code: def read(self):
          "Read and interpret data from the daemon."
          status = gpscommon.read(self)
          if status <= 0:
              return status
          if self.response.startswith("{") and self.response.endswith("}\r\n"):
              self.unpack(self.response)
              self.__oldstyle_shim()
              self.newstyle = True
              self.valid |= PACKET_SET
          elif self.response.startswith("GPSD"):
              self.__oldstyle_unpack(self.response)
              self.valid |= PACKET_SET
          return f read(self):
          "Read and interpret data from the daemon."
          status = gpscommon.read(self)
          if status <= 0:
              return status
          if self.response.startswith("{") and self.response.endswith("}\r\n"):
              self.unpack(self.response)
              self.__oldstyle_shim()
              self.newstyle = True
              self.valid |= PACKET_SET
          elif self.response.startswith("GPSD"):
              self.__oldstyle_unpack(self.response)
              self.valid |= PACKET_SET
          return 0
docs: Read and interpret data from the daemon.