get_pixel_rgn() function in gimp 3 python

[Ofnuts]

I don't think there is a specific python documentation for Gimp v3. The only Python API doc I know is for Gimp 2.x and Python 2.7. AFAIK the intent of the developers is for all languages (except perhaps script-fu) to use Glib introspection to access the API available to all plugins.

IMHO unless you really need to use the raw 32-bit data in your plugin it will be a lot easier to use Gimp 2.10 and Python V2.