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em@leibniz:~/pyopencl-0.92$ python
Python 2.6.6 (r266:84292, Sep 15 2010, 16:22:56) 
[GCC 4.4.5] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyopencl
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "pyopencl/__init__.py", line 3, in <module>
    import pyopencl._cl as _cl
ImportError: No module named _cl
>>>