How to rewrite Python-OpenCV CPU functions into Python-OpenCV Cuda functions?

We are presently using OpenCV with Python in Cuda mode on Jetson AGX Xavier Machines for computer vision goals. We have many Python-OpenCV applications which work well in CPU mode on several computers but we don’t have experience in OpenCV-Python in Cuda mode on the GPU. We found minimal tutorials/documentation about coding OpenCV-Python in Cuda mode. My question:

Can you tell us where we can find detailed documentation/tutorials about coding OpenCV-Python in Cuda mode on the GPU?

Not all the modules in OpenCV are supported by GPU yet. You can find the list of supported modules in this link:
Modules supported by GPU

If you want to see some examples, you can find them in this link:
Examples