YAML and TOML support just landed in msgspec, my *fast* & friendly serialization library for #Python 🐍 🐍 🐍 !
https://github.com/jcrist/msgspec
I wrote up a quick example using it to parse and validate pyproject.toml files:
https://jcristharif.com/msgspec/examples/pyproject-toml.html
I think it's a pretty good demo of msgspec's capabilities.