you can try https://www.jython.org/download :
1- add the jar in userlib folder
2- make a java action to write python
example:
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
public class Main {
public static void main(String[] args) throws ScriptException {
ScriptEngine engine = new ScriptEngineManager().getEngineByName("python");
engine.eval("import sys");
engine.eval("print sys");
engine.put("a", "42");
engine.eval("print a");
engine.eval("x = 2 + 2");
Object x = engine.get("x");
System.out.println("x: " + x);
}
}