Example usage when Weechat is running on a remote PC and you want want to use port 4321 for the connection.

On the "client" (where the notifications will end up), host is
the remote host where weechat is running:
   python2 location/of/pyrnotify.py 4321 & ssh -R 4321:localhost:4321 username@host
You can have a second argument to specified the time to display the notification
  python2 location/of/pyrnotify.py 4321 2000 & ssh -R 4321:localhost:4321 username@host
Important to remember is that you should probably setup the
connection with public key encryption and use something like
autossh to do this in the background.

In weechat:
   /python load pyrnotify.py
   and set the port
   /set plugins.var.python.pyrnotify.port 4321

It is also possible to set which host pyrnotify shall connect to, this is not recommended. Using a ssh port-forward is much safer and doesn't require any ports but ssh to be open.

ChangeLog:

2017-12-26: Made it python3 compatible (merry christmas)
2016-**-**: Changed escaping and made it more dunst (http://knopwob.org/dunst/index.html) friendly
2014-05-10: Change hook_print callback argument type of displayed/highlight (WeeChat >= 1.0)
2012-06-19: Added simple escaping to the title and body strings for the script to handle trailing backslashes.