def backfill(self, limit=None):
        return self._upsample('backfill', limit=limit)
This function uses the python OptionParser module to define an option
dataset/ETHPy150Open pydata/pandas/pandas/tseries/resample.py/Resampler.backfill--crossover with--dataset/ETHPy150Open scanner/asimap/asimapd_user.py/setup_option_parser