FYI, Python Programmers in DC:
The Open Data Science Conference is a 1000-person event, around the
languages, tools, and topics of data science. We will cover everything
from R and Python, to SQL and Hadoop, to machine learning, predictive
analytics and other topics. We have a fantastic line-up of over 70
speakers including Jared Lander, Wes McKinney, Brian Granger, Owen
Zhang, and many more.
http://opendatascicon.com/I have a 55% discount code ; mail me if you are interested!