I'll list a few use-cases where I found Go to be a great fit for me.
Building command line tools:
Both Go and Python are great for building command line tools. One place where Go is different is that it's super easy to produce statically linked, self-contained, binaries. The result is less dependancies to manage at install time. Many users find tools distributed in a self-contained binary easier to get started with -- no need to have the right runtime (python 2.x) installed.
Example: https://github.com/kelseyhightower/confd
Building web services:
I'm always building small services to solve a problem and this is one area where Go really shines for me. Out of the box Go ships with a "high performance" web server. Just import the "net/http" package and off you go. While the built-in web server is not a full replacement for something like Nginx (rate limiting, rewrite rules, etc), it does allow you to go really far without the need of an external web server for performance.
Example: https://github.com/kelseyhightower/coreos-ipxe-server
There are other benefits to Go like performance gains if you are willing to trade in the flexibility you get from a dynamic language like Python and migrate to a strongly typed language that must be compiled before running your code. While Go is strongly typed it does not get in the way of getting things done. The Go compiler is fast and stays out of the way.
I'm not sure what your background is, but I did a talk a few years ago at GopherCon 2014, "Go for Sysadmins" (https://www.youtube.com/watch?v=wyRbHhHFZh8), that provides a nice introduction into why I like Go and some live demos to drive key points home. Hope this helps.