I disagree about FastAPI in this list of frameworks. Django and Flask have great documentation, FastAPI does not. There is no API reference for FastAPI, so often you will have to read the source code to understand what options are available and how to use them. Also the FastAPI explanation about concurrency (https://fastapi.tiangolo.com/async/#concurrent-burgers) is terrible. It's filled with emojis and seems to be written for children.