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there is no direct way and I doubt there ever will. These interpreters don't share a common memory management model. That is a basic limitation which essentially renders it impossible to pass objects across the language barrier. KLayout exposes it's internal objects to these different interpreters and handles memory management. Hence it can serve both worlds.
True language interoperability is (to my knowledge) achieved only within the .NET framework which provides a common model for different languages. But that's a different thing.