  The Astropy project supports and fosters the development of open-source and
openly-developed Python packages that provide commonly-needed functionality to
the astronomical community. A key element of the Astropy project is the core
package Astropy, which serves as the foundation for more specialized projects
and packages. In this article, we provide an overview of the organization of
the Astropy project and summarize key features in the core package as of the
recent major release, version 2.0. We then describe the project infrastructure
designed to facilitate and support development for a broader ecosystem of
inter-operable packages. We conclude with a future outlook of planned new
features and directions for the broader Astropy project.
