Michael, The file you need is the proposed updated version of items.py. The file items.py is already part of your Jython installation. You should be able to replace the current version, maybe copy the original somewhere safe first, then copy the contents of the first code panel in my post above to automation/lib/python/items.py. On my system, an RPi3, I run Openhabian and the Jython files are all located under /etc/openhab2/automation/, which is actually a symlink to /usr/share/openhab2/automation. Your installation may be different, but you will have an automation directory into which you copied the Jython files and directories. I assume you are familiar with the post How to Setup Jython where @5iver described the process of installing Jython.
