def get_series_crossfilter(self, days, **kwargs):
        cf_to = datetime.date.today()
        cf_from = datetime.timedelta(int(days)) - cf_to
        return self.get_series(cf_from, cf_to)
dataset/ETHPy150Open eleme/polaris/polaris/ext/time_series.py/TimeSeries.get_series_crossfilter/swapped operands of `-`