flask-pydantic

flask-openapi3 looks good but has only 246 stars. Would be worried using it in production. flask-pydantic has no openapi tie-in. Oh look, there's me bumping the openapi request that's been an issue since 2020: https://github.com/pallets-eco/flask-pydantic/issues/17 which has an open PR since 2022. It's possible between Quart and svcs (for DI) and some Pydantic/Marshmallow/OpenAPI extension you might be able to mimic what FastAPI does. But I'd just use FastAPI. I use async too. It's a lot easier to scale in my opinion. Do none of these pieces matter to you? Like do you not do any data validation or care about OpenAPI?

https://github.com/pallets-eco/flask-pydantic https://luolingchun.github.io/flask-openapi3/v4.x/ > dependency injection While nice I never found this to be a critical deciding factor of using a technology. > real async If you really want it there is Quart which is real async https://github.com/pallets/quart I'm not a huge async fan in python anymore so not it's not a huge issue for me. But there are definitely options for Flask if you want to use async.