MultiBlockMergeFilter

# !/usr/bin/env python3

from vtkmodules.vtkCommonDataModel import vtkMultiBlockDataSet
from vtkmodules.vtkFiltersGeneral import vtkMultiBlockMergeFilter
from vtkmodules.vtkFiltersSources import vtkSphereSource


def main():
    sphere_source1 = vtkSphereSource()

    sphere_source2 = vtkSphereSource(center=(10, 10, 10))

    multi_block_data_set1 = vtkMultiBlockDataSet(number_of_blocks=1)
    multi_block_data_set1.SetBlock(0, sphere_source1.update().output)

    multi_block_data_set2 = vtkMultiBlockDataSet(number_of_blocks=1)
    multi_block_data_set2.SetBlock(0, sphere_source2.update().output)

    multi_block_merge_filter = vtkMultiBlockMergeFilter()
    multi_block_merge_filter.AddInputData(multi_block_data_set1)
    multi_block_merge_filter.AddInputData(multi_block_data_set2)
    multi_block_merge_filter.update()


if __name__ == '__main__':
    main()