Some weeks ago Telefonica I+D held its second development conference Devcon 2013 and I talked there about Beatiful APIs and The Python Data Model. As the last time, I have uploaded the reveal.js slides to my git repository. Enjoy them!
Beautiful APIs
Python data model
Metaprogramming in Python & JavaScript
Continuation Passing Style in JavaScript
Note: remember each talk has main sections (left / right arrows) and the development is vertical (up / down arrows) ,)
Uno + uno = diez 