Ensure pyladies handbook command works for Python 3.4

Encountered the following trying to run pyladies handbook: 
https://gist.github.com/ceaess/f481adb1433b00d9be91

Turns out that 'self.version' is broken intentionally in Python 3.4 ( http://bugs.python.org/issue13248 ) & ( http://hg.python.org/cpython/rev/5393382c1b1d#l1.15 ), this commit fixes it for you.