@ajb2k3 Yes, I knew about it. But I think that @hkubota was after is a little different. Maybe to have a way to start designing the ui of the app in UIFlow and then add specific functions in python editor. At least this is what I'm doing. So it would be good to be able to save the blocks and the code separately, and then you can either apply the changes (like a file diff) or not.
Thanks for your help @ajb2k3!