code: def get_data(stream, parameters, fmt):
      
      sds = kp.db.StreamDS()
      if stream not in sds.streams:
          log.error("Stream '{}' not found in the database.".format(stream))
          return
      params = {}
      if parameters:
          for parameter in parameters:
              if '=' not in parameter:
                  log.error(
                      "Invalid parameter syntax '{}'\n"
                      "The correct syntax is 'parameter=value'".
                      format(parameter)
                  )
                  continue
              key, value = parameter.split('=')
              params[key] = value
      data = sds.get(stream, fmt, **params)
      if data is not None:
          with pd.option_context('display.max_rows', None, 'display.max_columns',
                                 None):
              print(data)
      else:
          sds.help(stream)
docs: Retrieve data for given stream and parameters, or None if not found