Hello John,
The zip that you download from dev2dev has jython.jar already in it. If you would like to install jython, you should download it from jython.org.
To use WLST you do not need a jython installation. Unzip the file and place the wlst.jar and jython.jar in your classpath and invoke java weblogic.WLST.
Hope it helps,

John.E.Gregg@wellsfargo.com wrote:
Hi all,
I'm new to jython.  I'm using jython 2.1, jdk 1.4.2, and invoking it with java org.python.util.jython.  My "installation" actually came from BEA because I'm trying to use their WLST tool.  Jython doesn't seem to pick up the contents of my .jython file.  I can do print(java.lang.System.getProperty('user.home')) and see my home dir, but the contents of user.home/.jython are not visible.  I restarted jython after creating .jython.