Hi @Yaroslav this is indeed possible however a bit clunky for the moment, but here a full step by step.
Install pip with c4dpy -m ensurepip Install Python Visual Studio Debugger with c4dpy -m pip install ptvsd. Within Visual Studio in your launch.json just set up a basic attach setting, here is mine but for more information seePython debug configurations in Visual Studio Code. { "version": "0.2.0", "configurations": [ { "name": "Cinema 4D: Remote Debugger Attacher", "type": "python", "request": "attach", "connect": { "host": "127.0.0.1", "port": 3000 }, "pathMappings": [ { "localRoot": "${workspaceFolder}", "remoteRoot": "." } ] }, ] } The *.pyp plugin should be of course in the same workspace as your launch.json. Edit the *.pyp plugin and write the next code in the first line of your pyp file. import ptvsd ptvsd.enable_attach(address = ('127.0.0.1', 3000)) Start Cinema 4D, wait until its UI is loaded, meaning the pyp plugin is loaded, and the client (your script) is attachable from a debugger. Run the previously created debug configuration (called Cinema 4D: Remote Debugger Attacher). Put a breakpoint somewhere (like in the Execute of a CommandData) to trigger the BP. Enjoy 😄
Note this also works nicely for the script, however for script you should call ptvsd.wait_for_attach() after the ptvsd.enable_attach.
Cheers,
Maxime.