Have you considered GraalVM? You can run both languages inside the same managed runtime (JVM), sharing the same data structures, inlining across language boundaries, and debug both with Chrome Dev Tools.
I'd be happy to answer questions about the overlap of the 2. I can say I happily execute python scripts from our embedded python and even point the python execution at an anaconda distribution.
How much have you used GraalVM? I'm curious to know if it really works like that in practice. I've read what it says on the tin a few times and been impressed, but haven't actually sat down and played with it yet. The skeptic in me thinks that in a real-world production scenario, such a thing is surely a house of cards that falls down all the time in unexpected and difficult to diagnose ways. It'd be great to hear if there's people who can vouch and say it actually delivers on its promises of a polyglot utopia :)
Graal itself still has limitations with many libraries yet, the biggest one being having any library that heavily uses reflection. I'd look at some of the work red hat is doing with some of its java libraries and quarkus: https://developers.redhat.com/blog/2019/03/07/quarkus-next-g...
IIRC you also end up relying on a graal-provided version of python that may or may not be kept up-to-date by a project for which it's just a secondary target. Been there with IronPython and Jython, it's no fun.
I remember coming across GraalVM. However, as I solo developer, I have found learning another new thing to be detrimental to my ability to getting things done. I have wasted way too many hours learning new frameworks, languages, platforms, etc.
I'm doing my best to avoid learning something new except when a strong compatibility with my current stack exists and is quickly implementable.
Generally if you want python/java interaction, we maintain a tool called javacpp that handles this, we even bundle cpython: https://github.com/bytedeco/javacpp-presets
GraalVM itself also depends on javacpp for a portion of its features (LLVM wrapper): https://github.com/oracle/graal/blob/315f5dcf69c2e73fd13a5f8...
I'd be happy to answer questions about the overlap of the 2. I can say I happily execute python scripts from our embedded python and even point the python execution at an anaconda distribution.