1) Pick a very easy tutorial for both of them 2) Do them 3) Choose
Framework will only get better each day so if today Rails deployment sucks, tomorrow it'll become better unless the growth is stagnant. Same case with Pylons or Django or the 100000000000000001 python frameworks out there.
Now if you're looking for a job, Rails would be a better choice because the hype marketing has converted a lot of people (they drink the kool-aid straight from the hose).