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

Homepage : http://pyregion.readthedocs.org/

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 (see exception below) are under MIT License. See LICENSE.

• "lib/kapteyn_celestial.py" is from the Kapteyn package (http://www.astro.rug.nl/software/kapteyn/). See LICENSE_kapteyn.txt.

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