import .vtk error in Python

Question

I have Windows 8 64 bit and Python 2.11 64 bit. I install VTK library using pip command. It shows the following error while running:

   Traceback (most recent call last):
  File "<pyshell#2>", line 1, in <module>
    import vtk
  File "C:\Python27\lib\site-packages\vtk\__init__.py", line 72, in <module>
    __helper.refine_import_err('rendering', 'vtkRenderingPython', exc)
  File "C:\Python27\lib\site-packages\vtk\__helper.py", line 32, in refine_import_err
    raise LinkError, str(exc)
LinkError: DLL load failed: The specified module could not be found.` Traceback 

My PATH are:

C:\Python27\Lib;
C:\Python27\Lib\site-packages;
C:\Python27\Lib\site-packages\vtk;
C:\Python27\Scripts;

Thanks for your help.

Answer 1

I could solve the problem with uninstalling .vtk 5 and installing vtk 6.2. 0 from http://www.lfd.uci.edu/~gohlke/pythonlibs/ . I also install PyQt4

Answer 2

In my case, the problem was resolved by adding PyQt4's directory to PATH, as suggested here . That is, the directory similar to

C:\Python27\Lib\site-packages\PyQt4

which contains the DLL that it's looking for.