Those are really exceptions because researchers love Python. Outside of those areas, there's really nothing special that Python's ecosystem brings to the table.
I'd really like to see machine learning stuff in languages other than Python so that there's less friction in experimenting. I know that would require prying it from researchers' cold dead hands though.
Those aren't exceptions, those are the norm. Yeah Go has really slick libraries to support your favorite protocol, but that's the easy part of programming. If I want to hack together something using computer vision, do some amature data science, or use cutting edge scripts written by security researchers, that's gonna be Python. Pretty much all code that I would wanna steal for my project is written in Python, or has Python bindings as its main way of using it.
