I've used https://github.com/yglukhov/nimpy and I have to say the package, the author and the nim community were all phenomenal in helping me implement nim code that works as a Python package.
Also of interest for people might be Genny. It’s a Nim library to automate creating language bindings for other languages. Currently it supports Python, Node, and C.
Maybe also of interest is a nascent package for R calling Nim (or vice versa): https://github.com/SciNim/rnim
I'm toying a bit with nim these days, and I find it quite pleasant. it is a pity that it did not find the same success as go or rust
This makes me want to write Python extensions using Nim using Spry - http://sprylang.se
I suspect Nim has a good shot at getting popular, by piggybacking on Python syntax, the same way several other languages (e.g. Java, JavaScript) got popular by piggybacking on C syntax. Python just became number 1 on TIOBE index. Once part of the generation of developers just starting now, Python-first, needs to learn a systems programming language, Nim provides a path of least resistance for migration, close to the syntax they will be already used to.