Python OpenCV with CUDA support in CONDA env

Hi,

Please remember to add --system-site-packages flag to import the host module within a virtual environment.
You can find an example in the below comment:

More, the pre-installed OpenCV doesn’t enable GPU support.
If you want a GPU version of OpenCV, please build it from the source.

Here is a script to building OpenCV v4.5.5 from source for your reference:

Thanks.