docs: def _get_interleague_fl(cls, home_team_lg, away_team_lg):
          """
          get inter league flg
          :param home_team_lg: home team league
          :param away_team_lg: away team league
          :return: inter league flg(T or F or U)
          """
          if (home_team_lg == MlbamConst.UNKNOWN_SHORT) or (away_team_lg == MlbamConst.UNKNOWN_SHORT):
              return MlbamConst.UNKNOWN_SHORT
          elif home_team_lg != away_team_lg:
              return MlbamConst.FLG_TRUE
          return MlbamConst.FLG_FALSE