Aiming to reduce the need for boilerplate code and speed up the development of complex Python applications, Facebook Engineering has created an open source framework called Hydra. Hydra allows developers to “compose” the configurations of applications from the command line or from configuration files.
Facebook says Hydra offers a flexible approach to developing and maintaining code and configurations, thus speeding up the development of complex applications in fields such as machine learning research. Offered under an MIT license, Hydra lets developers compose and override configurations.