Comment 2 for bug 1174205

I am able to import pyopencl on raring without error, although I do have nvidia-313-updates and nvidia-cuda-toolkit installed.

$ python
Python 2.7.4 (default, Apr 19 2013, 18:28:01)
[GCC 4.7.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyopencl._cl as _cl
>>>

$ dpkg -l | grep nvidia | grep ii
ii nvidia-313-updates 313.30-0ubuntu1 amd64 NVIDIA binary Xorg driver, kernel module and VDPAU library
ii nvidia-common 1:0.2.76 amd64 transitional package for ubuntu-drivers-common
ii nvidia-cuda-dev 5.0.35-4ubuntu1 amd64 NVIDIA CUDA development files
ii nvidia-cuda-doc 5.0.35-4ubuntu1 all NVIDIA CUDA and OpenCL documentation
ii nvidia-cuda-gdb 5.0.35-4ubuntu1 amd64 NVIDIA CUDA GDB
ii nvidia-cuda-toolkit 5.0.35-4ubuntu1 amd64 NVIDIA CUDA toolkit
ii nvidia-nsight 5.0.35-4ubuntu1 amd64 NVIDIA Nsight Eclipse Edition
ii nvidia-opencl-dev 5.0.35-4ubuntu1 amd64 NVIDIA OpenCL development files
ii nvidia-profiler 5.0.35-4ubuntu1 amd64 NVIDIA Profiler for CUDA and OpenCL
ii nvidia-settings-313-updates 313.30-0ubuntu1 amd64 Tool for configuring the NVIDIA graphics driver
ii nvidia-visual-profiler 5.0.35-4ubuntu1 amd64 NVIDIA Visual Profiler