Is FastAPI a full-fledged web framework for API development?

FastAPI is a modern, fast (high-performance) web framework for building APIs with Python. It provides all the necessary tools for developing full-fledged RESTful APIs, including routing, data validation, automatic documentation generation (Swagger, ReDoc), and support for asynchronous programming.

Although FastAPI is specifically aimed at creating APIs, its functionality is sufficient for developing a complete web application, especially if it is built around the API. However, for tasks related to server-side rendering of HTML templates or complex frontend logic, additional tools or integration with frontend frameworks may be required.

Example of a simple FastAPI application:

from fastapi import FastAPI

app = FastAPI()

@app.get("/")
async def read_root():
    return {"message": "Hello, FastAPI!"}