Ask HN: What programming language you will learn in 2018?

I know a tiny bit of Python but I hope to learn enough to become highly proficient and apply it to some data problems I would like to solve.

Python 3 since it sounds like the ML & data science communities are starting to prefer it..? (Heard that from Jeremy Howard at fast.ai)

Currently getting up to speed with Reason (ReasonML). The latest version (3) brings Javascript-like syntax, and after many years of dynamically typed languages, having a compiler infer and check my types for me (and catch many errors before they reach the browser) is a good feeling. It's built using Bucklescript which brings a great toolkit of its own, and also means I'm pretty much learning OCaml at the same time.

I'm learning Haskell too for home/side projects, but ReasonML means I can do functional programming for work whilst I learn all about FP again.

Scala. My org is using a lot more Flink, and between that and Spark, Scala is becoming a necessity.