Ensure the plugin folder (addons/termdot) is in the same directory as your game executable; Alternatively, copy the files (shell.dll, winpty.dll, termdot.exe) from the plugin folder (addons/termdot) ...

Decorating your python function as a node means that it's actually now a class, so you'll need to instantiate it before you can call it -- but otherwise it's a lot like a regular python function. You ...