Having fun with Python + Graphviz I

Yesterday I went to a session on Python + Graphviz at the Stratosphere Lab. It's been literally ages since I coded in Python and I always wanted to learn how to plot simple charts. The's a blog post on the session here, so I won't repeat anything here. I do want to share some of the visualisations that I managed to create playing with the data, because is just so awesome! :)