FreeBSD/Python is more ... stable-ish and the community is calmer (or probably more mature) but the development is not as fast-pace as the Linux/Ruby counterpart.
Where I live, you won't have trouble finding Rails developers but not so much when it comes to Python.
Github is filled with probably more Ruby than Python.
http://www.langpop.com/
http://www.tiobe.com/index.php/content/paperinfo/tpci/index....
FreeBSD/Python is more ... stable-ish and the community is calmer (or probably more mature) but the development is not as fast-pace as the Linux/Ruby counterpart.