class ParsedSeriesPostProcessor(ValueCompositePostProcessor):
    def __init__(self):
        self.others = []
        self.parsed_series_tp = []

    def _post_process (self, tp, table):
        if (tp['series_id'], tp['date']) in self.parsed_series_tp:
            return []

        self.parsed_series_tp.append((tp['series_id'], tp['date']))
        return [tp]