It seems it is installed: iMac-de-Jordi:Library jeam$ pip install pyfits Requirement already satisfied: pyfits in /Library/Python/2.7/site-packages Requirement already satisfied: numpy in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from pyfits) How can I install netpbm via homebrew? Sorry I don't know what homebrew is? Thanks!!!Read More...