In my experience, finding something in Python docs takes a total of five seconds, including passing through the "Google gateway".
Finding something in Rails reference has been downright impossible. This is a function of Ruby itself, a very magical language, magic that fails to communicate in auto-generated documentation. How does this work? Good luck finding out, but you'll feel very clever three hours from now.
Admittedly, I've had very limited exposure to Rails, but perhaps that makes my experience even more relevant.