def test06b(self):

        table = self.table
        formats = table.description._v_nested_formats

        # append new rows
        r = records.array([[456, 'dbe', 1.2], [
                          2, 'ded', 1.3]], formats=formats)
        table.append(r)
        table.append([[457, 'db1', 1.2], [5, 'de1', 1.3]])

        # Modify just one existing column
        with self.assertRaises(NotImplementedError):
            for row in table.iterrows():
                row['col1'] = row.nrow + 1
                row.append()
            table.flush()
Checking modifying one column (iterator, __setitem__)
dataset/ETHPy150Open PyTables/PyTables/tables/tests/test_tablesMD.py/SetItemTestCase.test06b