[cutler]

There's nothing about Python, compared with Ruby, that gives it any advantage, numerics or otherwise. Ruby's C ffi is just as powerful as Python's. It's all just a first mover phenomenon. Python is the VHS of programming languages.

[luibelgo]

Community matters. In this case Python community around data science is huge.

[cutler]

PHP, JS and Python all have great communities but they're still crappy languages.