Logged In: YES 
user_id=720847

I do not know what policy is desired for the condition of
the path after executing site.py.

I found the problem when I switched to try 2.3 and used an
application I wrote which searches the path to obtain
information about installed  modules.  During
troubleshooting, the change in site.py from 2.2 to 2.3, to
stop removing non-existent directories in the path, became
evident as the reason for the application finding a
non-existent directory in the path.

The application was, of course, easily changed to skip
non-existent directories.  The question is whether removing
of non-existent directories in the path _should_ be done by
site.py