/usr/lib/python2.7/dist-packages/paraview/pvvtkextensions.py is in paraview-python 4.0.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | from paraview import vtk
from vtkPVVTKExtensionsPython import *
|