code: def get_participant(participant_id):
      
      try:
          ppt = models.Participant.query.filter_by(id=participant_id).one()
      except NoResultFound:
          return error_response(
              error_type="/participant GET: no participant found", status=403
          )
  
      # return the data
      return success_response(participant=ppt.__json__())
docs: Get the participant with the given id.