Help with hashcode (ARG!!!)

[Bob]

Me again,

I'm trying to sync python hash with the java.lang.String.hashCode().
based on a few suggestions, I'm trying Jython. But can't seem to 
access the python hash method. Here are the code snips.

JAVA:
public String convert(String str ) 
  {
    PythonInterpreter interp = new PythonInterpreter();
    interp.set("hc", new PyString());
    interp.exec("hc = str(hash(\""+ str +"\"))");
    PyObject x = interp.get("hc");
    return "" + x;
  }

foo.convert("DOG") returns 67868

PYTHON:
import sys
s = sys.argv[1]
print str(hash( s ))

python foo.py DOG returns -595261171

What's up ????? Does anyone know how to match hashcodes ????? Is there a bug
in Jython ????

Thanks- Bob