Method __setitem__

tables/table.py:3719–3774

Set a row or a range of rows in a column. If key argument is an integer, the corresponding element is set to value. If key is a slice, the range of elements determined by it is set to value. Examples -------- :: # Modify row 1

(self, key: int | slice, value: Any)

            yield from buf_slice

    def __setitem__(self, key: int | slice, value: Any) -> int:
        """Set a row or a range of rows in a column.

        If key argument is an integer, the corresponding element is set to
        value.  If key is a slice, the range of elements determined by it is
        set to value.

        Examples
        --------
        ::

            # Modify row 1
            table.cols.col1[1] = -1

            # Modify rows 1 and 3
            table.cols.col1[1::2] = [2,3]

        Which is equivalent to::

            # Modify row 1
            table.modify_columns(start=1, columns=[[-1]], names=['col1'])

            # Modify rows 1 and 3
            columns = np.rec.fromarrays([[2,3]], formats='i4')
            table.modify_columns(start=1, step=2, columns=columns,
                                 names=['col1'])

        """
        table = self.table
        table._v_file._check_writable()

        # Generalized key support not there yet, but at least allow
        # for a tuple with one single element (the main dimension).
        # (key,) --> key
        if isinstance(key, tuple) and len(key) == 1:
            key = key[0]

        if is_idx(key):
            key = operator.index(key)

            # Index out of range protection
            if key >= table.nrows:
                raise IndexError("Index out of range")
            if key < 0:
                # To support negative values
                key += table.nrows
            return table.modify_column(
                key, key + 1, 1, [[value]], self.pathname
            )
        elif isinstance(key, slice):
            start, stop, step = table._process_range(
                key.start, key.stop, key.step
            )
            return table.modify_column(start, stop, step, value, self.pathname)
        else:
            raise ValueError("Non-valid index or slice: %s" % key)

    def create_index(