code: def _postprocess_for_cut(fac, bins, retbins, x_is_series,
                           series_index, name, dtype):
      
      if x_is_series:
          fac = Series(fac, index=series_index, name=name)
  
      if not retbins:
          return fac
  
      bins = _convert_bin_to_datelike_type(bins, dtype)
  
      return fac, bins
docs: handles post processing for the cut method where
      we combine the index information if the originally passed
      datatype was a series