code: def export_survey_participant_list(self, instrument, event=None, format='json'):
          
          pl = self.__basepl(content='participantList', format=format)
          pl['instrument'] = instrument
          if event:
              pl['event'] = event
          return self._call_api(pl, 'exp_survey_participant_list')
docs: Export the Survey Participant List
  
          Notes
          -----
          The passed instrument must be set up as a survey instrument.
  
          Parameters
          ----------
          instrument: str
              Name of instrument as seen in second column of Data Dictionary.
          event: str
              Unique event name, only used in longitudinal projects
          format: (json, xml, csv), json by default
              Format of returned data