We don't have an Oracle Subscription because we wanted to evaluate GraalVM Python, but I wanted to speak to someone on the phone but there's no phone # or anything, and I tried calling multiple numbers but the Oracle Sales and others haven't even heard of GraalVM.

It's unfortunate that Python is in an experimental state, I was hoping to use it but we'll stick with Jep for now. Perhaps we can evaluate the product in the future sometime! :)