def nbytes(self): return _util.get_nbytes(self.values)
def nbytes(self): cols_nbytes = [_util.get_nbytes(c) for c in self._columns] if all(cols_nbytes): return sum(cols_nbytes) return None
def nbytes(self): return _util.get_nbytes(self.data)
def nbytes(self): cols_nbytes = [_util.get_nbytes(c) for c in self.columns] if all(cols_nbytes): return sum(cols_nbytes) return None