Often people will get themselves banned from a server because they used the wrong SSH key or they simply forgot their passphrase or even password. This simple little piece of tech will help your Sys Admins/DevOps deal with these minor annoyances with greater ease.
Recently we've been working on integrating OpenKM into one of our Django projects. OpenKM is an open-source document management system written in Java. The end result was that I wrote and open-sourced a Django app called django-openkm. which anyone can use to delegate document management, storage, search and more from your Django app to OpenKM.
Over on codeinthehole.com, David Winterbottom has written up a Fabric function for elegantly handling git tagging when running deployments. Such a function is part of all python deployment scripts used at Tangent Labs - it helps ensure that every build is either tagged or has a build number that helps QA determine where in the release cycle an integration build is.