Ports can definitely be used for this (I did it myself a few times), but not without reservations.
There is another data hop, so the data being sent to the port and received by it needs to pass through the extra serialization/deserialization step. Depending on the particular situation this may or may not cause a significant overhead As usual, it’s best to measure 
In addition, if external term format codec is not available in the guest language, you’ll need to fallback to a language neutral format (e.g. json or protobuf), so some fidelity might be lost. For example instead of sending a tuple directly to the port, you might need to somehow transform it into a type supported by the exchange format before encoding.
Whatever you can use from Python should work, with the caveats mentioned above.
