Thanks you for your answer.
My use case is the following: I need to control motors with the GPIO and to process real-time video input. The motor part is simple, I only need to generate PWMs, control digital output, and measure digital and analog input (pretty classic GPIO use).
Apparently the GPIO is usable via C and I could write a Python wrapper that uses C commands to serve my purpose but I doubt it would be the best Idea.
I don’t know what sysnode controls are.