Cody Jackson is a disabled military veteran, the founder of Socius Consulting – an IT and business management consulting company in San Antonio – and a cofounder of Top Men Technologies. He is currently employed at CACI International as the lead ICS/SCADA modeling and simulations engineer. He has been involved in the tech industry since 1994, when he joined the Navy as a nuclear chemist and Radcon Technician. Prior to CACI, he worked at ECPI University as a computer information systems adjunct professor. A self-taught Python programmer, he is the author of Learning to Program Using Python and Secret Recipes of the Python Ninja. He holds an Associate in Science degree, a Bachelor of Science degree, and a Master of Science degree.

Hugo Solis is an assistant professor in the Physics Department at the University of Costa Rica. His current research interests are computational cosmology, complexity, cryptography, and the influence of hydrogen on material properties. He has vast experience with languages, including C/C++ and Python for scientific programming. He is a member of the Free Software Foundation and has contributed code to some free software projects. He has also been a technical reviewer for Hands-On Qt for Python Developers and Learning Object-Oriented Programming, and he is the author of the Kivy Cookbook from Packt Publishing. Currently, he is in charge of the IFT, a Costa Rican scientific nonprofit organization for the multidisciplinary practice of physics.