The conference is composed of three parallel tracks: 1) the Discovering Python track will primarily focus on introductory topics about Python libraries, frameworks and technologies; 2) the Spreading Python track will focus both on advanced technical topics and related matters like development methodologies, real-world use cases and management techniques; 3) the Learning Python track will feature a continuous interaction between the speaker and the audience: the speaker will propose a topic and introduce a possible solution, then the talk will dynamically evolve, naturally following questions and notes from the audience. Talks could focus on the following topics (the list is neither exclusive nor exaustive): * vast and/or distributed applications written in Python; * scientific and computationally intensive applications; * interaction with other languages/environments, RPC, services; * web programming and web frameworks (Django, Zope, Pylons, ecc.); * concurrent/distributed programming (Twisted, Tornado, Eventlet, ecc.); * desktop programming and GUI toolkits; * Python as "scripting" language (system administration, COM, etc...); * Python and databases; * Python as an educational language; Each talk will have one of the following duration: 45, 60 or 90 approximately, inclusive of the time for the audience to enter and leave the room. Please specify which length best fit your contents: some flexibility is available to arrive at the best overall scheduling. For more info please visit: http://www.pycon.it/blog/2010/02/10/pycon4-call-for-papers-open http://www.pycon.it/pycon4/call-for-paper