  In the past decade imaging atmospheric Cherenkov telescope arrays such as
H.E.S.S., MAGIC, VERITAS, as well as the Fermi-LAT space telescope have
provided us with detailed images and spectra of the gamma-ray universe for the
first time. Currently the gamma-ray community is preparing to build the
next-generation Cherenkov Telecope Array (CTA), which will be operated as an
open observatory. Gammapy (available at https://github.com/gammapy/gammapy
under the open-source BSD license) is a new in-development Astropy affiliated
package for high-level analysis and simulation of astronomical gamma-ray data.
It is built on the scientific Python stack (Numpy, Scipy, matplotlib and
scikit-image) and makes use of other open-source astronomy packages such as
Astropy, Sherpa and Naima to provide a flexible set of tools for gamma-ray
astronomers. We present an overview of the current Gammapy features and example
analyses on real as well as simulated gamma-ray datasets. We would like Gammapy
to become a community-developed project and a place of collaboration between
scientists interested in gamma-ray astronomy with Python. Contributions
welcome!
