Regarding Davin's last paragraph: "Without pulling apart your code...", I would like to point out that what I'm doing is what the Documentation instructs:

https://docs.python.org/2/library/multiprocessing.html#using-a-remote-manager

So, I want to access a process running in another machine, which is the server.py, from another machine running client.py. But if I want tho run both separately in the same machine, I should also be able to.