Nim is more of a Golang-Python hybrid; people like me who learned Python first find the Go syntax offensive and the focus on error handling to be very pessimistic and boring to write, but creating something with Python which you can just compile and distribute is a pain in the ass. Nim solves both problems nicely. Sadly it is too much of a minnow in terms of available packages, e.g. for things like mature cloud SDKs.

Nim has a scientific community https://github.com/SciNim which host many science related packages like plotting and nd arrays.