Gammapy is an open source (BSD licensed) gamma-ray astronomy Python package.
It is an in-development affiliated package of Astropy that builds on the core scientific Python stack to provide tools to simulate and analyse the gamma-ray sky for telescopes such as CTA, H.E.S.S., and Fermi.
Gammapy is a place for Python-coding gamma-ray astronomers to share their code and collaborate. Contributions welcome!