I think you're better off picking the technology stack based on the community around it. With only 9 months of Python under your belt, it wouldn't be much of a

I think you're better off picking the technology stack based on the community around it. With only 9 months of Python under your belt, it wouldn't be much of a loss if you switched now. Try to get a feel for the Ruby/Rails and Python/Django communities and in which one you'd feel more comfortable participating. To make some sweeping generalisations, Pythonistas tend to be more computer-sciencey than the Ruby crowd, and if you're doing a lot of heavy number crunching, it might be worth checking out SciPy/numpy and whether there are equivalent stacks in Ruby (I have done this research but my gut says there aren't.) OTOH, the sheer size and popularity of RoR means that it's much easier to find work in Ruby/Rails than Python/Django. YMMV.