As someone who also develops in Python and Nim, I respectfully disagree. There are a lot of use cases where I would pick them over Go, but the important term here is “production grade”.

Sure, you can bootstrap something really quickly in Python and Nim, but when it comes to creating beefy APIs, I find that Go offers a much shorter development cycle. Sure it is slightly more verbose, but when your code compiles it usually works (which is partly due to the way Go deals with errors). If you need to handle a large number of requests, scaling with Go is a breeze and a nightmare in Python.