如何在 Java 项目 Intellij 中使用 PythonInterpreter - Jython

Question

I try to using PythonInterpreter in Java but I can't import org.python.util.PythonInterpreter package in Intellij. So the code below can't compile:

import org.python.util.PythonInterpreter; 
import org.python.core.*; 

public class SimpleEmbedded { 
    public static void main(String[] args) throws PyException { 
        PythonInterpreter interp = new PythonInterpreter();

        System.out.println("Hello, brave new world");
        interp.exec("import sys");
        interp.exec("print sys");

        interp.set("a", new PyInteger(42));
        interp.exec("print a");
        interp.exec("x = 2+2");
        PyObject x = interp.get("x");

        System.out.println("x: "+x);
        System.out.println("Goodbye, cruel world");
    }
}

I tried to download jython zip library but Intellij not recognize this library. Any suggest for me?

Answer 1

Make sure that you have installed Jython correctly into the project.

• The jar file should be downloaded from the page . In your case I recommend to use Jython Standalone option.

• Add the jar file as a library according to the official JetBrains guide .

If everything is fine with the project configuration but the problem remains you can try to perform the following actions:

• File | Invalidate Caches / Restart...

• Close the IDE.

• Remove all .idea files from the project.

• Remove/Rename IntelliJ IDEA cache files according to the following guide .

• Import the project from existing sources. (File | New | Project from Existing Sources...)