What do “python.path” and “python.prepath” mean in the Jython registry?
As of Subversion revision 5043 (August 1, 2008), “python.prepath” no longer has any effect; “python.path” replaces it, reverting to the behavior of Python 2.0a1 and earlier (and CPython). This workaround is no longer necessary because CPython standard library has been included with Jython for some time.