[burlesona]

I wouldn't recommend Rails as front-end only. It's fine as a full-stack framework, and rather nice for quickly building out a back-end API, but not really compelling if you're only using the front-end side of things IMO.

That said, I would argue that Ruby is a very similar but nicer scripting language than Python (particularly for general utility / glue scripts), so if you enjoy scripting in Python you would probably find Ruby easy to pick up and potentially a nice compliment to what you already know.