Python and Java Compared?

[Dry Ice]

First, I'd most like to hear from those
who have some balanced experience at BOTH,
as opposed to 'fans' of one or the other who
have only dabbled in a secondary effort.

I would like to select one development environment
to manage everything in a cluster-server project,
from accounting-database to server CGI to distributed
computing jobs.

Platform: Linux, and a few Windows machines- at
least at the beginning.

If you had to choose...