pyregion is a python module to parse ds9 region files. It also supports ciao region files.

• Code: https://github.com/astropy/pyregion
• Docs: https://pyregion.readthedocs.io
• PyPI: http://pypi.python.org/pypi/pyregion

Installation: pip install pyregion

Lead developer: Jae-Joon Lee ([@leejjoon](http://github.com/leejjoon))

• ds9 and ciao region files.
• (physical, wcs) coordinate conversion to the image coordinate.
• convert regions to matplotlib patches.
• convert regions to spatial filter (i.e., generate mask images)

All files are under MIT License. See LICENSE.

See also the in-development regions package at https://github.com/astropy/regions a new astronomy package for regions based on Astropy.