Linking python as external build tool in Xcode 7 El Capitan
trying run Python 2.7.11 on Xcode 7.2 on OS X 10.11.2;
I could not select 'python' under "Edit Scheme" > "Info" > "Executable" 
It was grayed out. I do not know what SIP means, but I got it to work by right-clicking the grayed out 'python' under usr/local/bin in the window and selecting "Quick Look"
A box opened and I closed it and 'python' was now selectable and ran the file like a champ!&nbsp;