That's a very compelling reason to use Python if you need those things. On the flip side, RubyGems is much bigger than PyPI and has a lot of modules that you w

That's a very compelling reason to use Python if you need those things. On the flip side, RubyGems is much bigger than PyPI and has a lot of modules that you won't necessarily find equal counterparts to in PyPI. I think there's a lot of use cases one can come up with where one language's library offerings suit them better. That was how I chose between Ruby and Python. I chose Ruby+Rails but it very, very easily could have been Python+Django.