I'd like to introduce you to Starlite - a new python ASGI API framework built on top of pydantic and Starlette.
You can find the repo for the framework here: https://github.com/Goldziher/starlite
The documentation here: https://goldziher.github.io/starlite/
I wrote an article introducing it, which you can read here: https://itnext.io/introducing-starlite-3928adaa19ae
This article gives an overview of the framework and explains "why create a new framework?" using the same ingredients as FastAPI, and also the relation to FastAPI with some criticisms.
I'd be happy to discuss and answer any questions you might have.