If you look at the prospects, choose Ruby. I myself prefer Python because of its beauty and clarity, but the framework Ruby on Rails is developing very actively and it's a huge variety of buns written. Django does not grow as actively as RoR.
Between Ruby and Python the difference is actually quite small (I just dragged from the obligation to observe the indentation in Python). Plus the build docks in Python quite comfortable with proper use of docstrings.
There is a small article on the topic of comparison of Python vs Ruby
On a pearl before all scripts on the server wrote, now, I think it is not so relevant.