Kenneth Reitz
Kenneth Reitz is the product owner of Python at Heroku and a fellow at the Python Software Foundation. Kenneth focuses on software development, photography, and music production. He is well known for his many open source software projects, specifically Requests: HTTP for Humans.
Hirokazu Nishio
Dr. Hirokazu Nishio is an engineer at Cybozu. He researches how to augment intelligence of team and individual, and develops next generation groupware. He also be interested in the evolution and diversity of programming languages and published a book on the topic. It became a bestseller in Japan and has been translated into Korean. He uses NumPy, scikit-learn, Flask and Boost.Python in his work.