def expand_grid_column_row(tokens, name):
    """Expand the ``grid-[column|row]`` properties."""
    tokens_list = _expand_grid_column_row_area(tokens, 2)
    for tokens, side in zip(tokens_list, ('start', 'end')):
        yield f'-{side}', tokens
Expand the ``grid-[column|row]`` properties.
weasyprint/css/validation/expanders.py