Well, being pyftpdlib a library and not an "end-user" FTP server like proftpd which gets automatically installed as an init script, it is daemonized, it has a config file etc. I doubt this would be useful. It's a library you import and on which you build your own FTP server. pyftpdlib "alone" used from the cmdline (python -m pyftpdlib) is a very simple FTP server with a bunch of configurable parameters, that's it.
Also, I'm not involved into Debian development so I'm not sure where such a thing should be discussed.