Tell us about your development experience using FastAPI.

FastAPI is a modern, fast (high-performance) web framework for building APIs with Python, based on the OpenAPI standard and Pydantic for data validation.

In my development experience with FastAPI, I have created RESTful APIs for various applications, including microservices and backend for SPAs. I used declarative route descriptions with type annotations, which simplifies auto-generation of documentation and input validation.

An example of a simple endpoint:

from fastapi import FastAPI

app = FastAPI()

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: str = None):
    return {"item_id": item_id, "q": q}

I also integrated with databases via ORM (e.g., SQLAlchemy), configured middleware for logging and error handling, and used Dependency Injection for managing dependencies.

FastAPI is well-suited for rapid prototyping and scalable solutions due to its asynchronous support and convenient code structure.