pyvista.MultiBlock.clean# MultiBlock.clean(empty=True)[source]# Remove any null blocks in place. Parameters: emptybool, default: TrueRemove any meshes that are empty as well (have zero points). Examples >>> import pyvista as pv >>> data = {"cube": pv.Cube(), "empty": pv.PolyData()} >>> blocks = pv.MultiBlock(data) >>> blocks.clean(empty=True) >>> blocks.keys() ['cube']