How can I rewrite the JPython to Python?

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Hello!I am new to Python and I would like to rewrite the following code to
python use to call by C program:// JPython code
=======================================
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");
    }
}


// C Language code ==============================
void main() {
    Py_Initialize();
    printf("Hello, brave new world");

    PyRun_SimpleString("import sys");    PyRun_SimpleString("print sys");
    // interp.set("a", new PyInteger(42));
    // I can't rewrite,Please Help!

    PyRun_SimpleString("print a");    PyRun_SimpleString("x = 2+2");
    // PyObject x = interp.get("x");
    // I can't rewrite,Please Help!
    // System.out.println("x: "+x);

    // I can't rewrite,Please Help!
    Py_Finalize();
    printf("Goodbye, cruel world");
}