(I put some newlines in at the forward slashes, and tested one, if I screwed it up let me know).
[ UPDATE: Turns out I did screw it up, and no one let me know! The internet is a tough world---no second chances! ]
As the instructions said, once you restart XCode, you should see the four Cocoa-Python templates appear under “User Templates” like this:
Now do this:
And if it doesn’t already exist, create a File Templates directory in the current user’s library folder as follows: