Libnotify is part of the Gnome project and built on top of the Gnome library. Python has bindings to Gnome and we will take advantage of them to create desktop notifications. We can set the text, images, urgency, and create custom buttons in our notifications. Libnotify is a small and simple library and is a good place to start if you have never done any Gnome/Gtk programming. These examples will walk through all the options available.
Unit testing a TCP server and client can be tricky at first. Let me share what I've come up with for unit testing them. I will not provide full test class code just invidual test methods. If you don't know how to use unittest with Python and get your tests running refer to the unittest documentation. GameServer.Server and GameClient.Client are the classes that are being tested and which should be implemented elsewhere.
This covers how to install and start using mod_wsgi with Apache on Arch Linux.