I've seen a reasonable amount of infrastructure work in node too, at this point.
My basic take right now is that service-based infrastructure is probably going to favor Go (or node).
Infrastructure that's not accessed directly as a server (kicked off from a separate CI tool or whatever) has a lot of Python representation.
Which side interests you more? Personally I wouldn't be thinking either/or for any popular language or stack, more like 80/20 and what should be my 80?