/usr/share/vtk/Infovis/Python/nodes.csv is in vtk-examples 5.8.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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label,intVal,decVal apple,3,3.1 orange,4,9.5 plum,5,7.2 grape,1,1.06