Comment 2 for bug 1325579

I believe I have this fixed. I have a few other issues to deal with as well as additional backward compatibility testing (only tested with python2.7 and 3.4 so far) before I can do a release, but if you want to try out the change, you can get the updated /usr/bin/policyd-spf at http://bazaar.launchpad.net/~kitterman/pypolicyd-spf/trunk/download/head:/42%40120a248f-6e16-0410-bfee-e5bfea1f629d:postfix-policyd-spf-python%252Ftrunk%252Fpolicyd-spf/policyd-spf