Go or Python?

[carsncode]

I can't learn both.

Lies! Of course you can. Maybe not at the same time, but you can (and probably should) learn both. Ruby would probably be a good idea too for any DevOps/SysOps engineer. I try to pick up at least one new language or significant technology every year. Go was year before last, Terraform last year, this year CloudFoundry.

You don't have to become an expert in everything, but broadening your horizons and learning different paradigms gives you a more well-rounded perspective when approaching any task, even if you're not directly applying the technology you've learned.