How to Setup Jython

The easiest way to setup Jython is to use this bundle…

It also includes the core and community helper libraries, which you can read about here…

https://openhab-scripters.github.io/openhab-helper-libraries/index.html

In those docs, you can also find detailed installation instructions, if you’d like to manually install everything. The official documentation needs to be updated, but it’s hard to get started with that until some of the details for OH 3.0 become finalized. Shout if you need any help!