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In the following instructions, I have built VTK in '/home/doriad/bin/VTK'

To run a vtk python script, simply type:

python script.py

If you receive this error:

ImportError: No module named vtk

add the following line to ~/.bashrc

export PYTHONPATH=/home/doriad/bin/VTK/lib:/home/doriad/bin/VTK/lib/site-packages:/home/doriad/bin/VTK/Wrapping/Python:$PYTHONPATH

Try to run the script again. If you get something like this:

ImportError: libvtkCommonPythonD.so.pv3.7: cannot open shared object file: No such file or directory

Add the following to ~/.bashrc

export LD_LIBRARY_PATH=/home/doriad/bin/VTK/lib:$LD_LIBRARY_PATH