PyRAF is a command language for running IRAF tasks that is based on the Python scripting language. It gives users the ability to run IRAF tasks in an environment that has all the power and flexibility of Python. PyRAF can be installed along with an existing IRAF installation; users can then choose to run either PyRAF or the IRAF CL.
The current release of PyRAF is v2.1 and can be downloaded from the stand-alone PyRAF download page.
PyRAF can also be obtained bundled with stsci_python and can be downloaded from the stsci_python download page.