> If you don't want to use a 3rd party module you could > use the multiprocessing module
That is definitely good for when I have a tree of processes which are all Python applications. I use it for that. But I am looking for something where the Python application can interact conveniently with an arbitrary external application. Using a socket/pipe and shared memory is convenient, but not feasible when system call overhead matters. -- http://mail.python.org/mailman/listinfo/python-list
