code: def test_multi_block_init_list(rectilinear, airplane):
      data = [rectilinear, airplane]
      multi = MultiBlock(data)
      assert isinstance(multi, MultiBlock)
      assert multi.n_blocks == 2
      assert isinstance(multi.GetBlock(0), RectilinearGrid)
      assert isinstance(multi.GetBlock(1), PolyData)
  
imports: import pathlib
  import platform
  import weakref
  import numpy
  import pytest
  import vtk
  import pyvista
  from pyvista import ImageData, MultiBlock, PolyData, RectilinearGrid, StructuredGrid, examples
label_desc: Use image node_id 5 for calling a global function with example usage: test_multi_block_init_list(rectilinear, airplane) without return types