Fix cache problem when going from Python 3 to 2
Fix cache problem when going from Python 3 to 2

PLNech/thefuck,mcarton/thefuck,Clpsplug/thefuck,mlk/thefuck,PLNech/thefuck,lawrencebenson/thefuck,lawrencebenson/thefuck,nvbn/thefuck,scorphus/thefuck,Clpsplug/thefuck,scorphus/thefuck,SimenB/thefuck,mcarton/thefuck,SimenB/thefuck,nvbn/thefuck,mlk/thefuck