Typo in util/__init__.py
Bulding Paraview v5.6(master):
In file build/lib/python3.6/site-packages/paraview/util/__init__.py
there is an import: from vtkmodule import vtkCommonExecutionModel
but instead of vtkmodule it should be vtkmodules.
Because of this SetOutputWholeExtent
from paraview.utils is broken. As a temporal fix we change vtkmodule to vtkmodules.