def cbytes(self): return _util.get_cbytes(self.values)
def cbytes(self): cols_cbytes = [_util.get_cbytes(c) for c in self._columns] if all(cols_cbytes): return sum(cols_cbytes) return None
def cbytes(self): return _util.get_cbytes(self.data)
def cbytes(self): cols_cbytes = [_util.get_cbytes(c) for c in self.columns] if all(cols_cbytes): return sum(cols_cbytes) return None