What is FastAPI? How does it differ from Django?

FastAPI is a modern web framework for Python, focused on creating fast APIs using OpenAPI and JSON Schema standards. It is characterized by high performance and ease of development due to automatic data validation and documentation generation.

Differences from Django:

• FastAPI — minimalist, oriented towards API creation, uses asynchronous programming, suitable for microservices and projects where speed and lightness are important.
• Django — a full-featured web development framework with a large set of built-in components (ORM, admin panel, templates), more suitable for traditional websites and complex projects.

Example of a simple FastAPI application:

from fastapi import FastAPI

app = FastAPI()

@app.get("/items/{item_id}")
async def read_item(item_id: int):
    return {"item_id": item_id, "name": f"Item {item_id}"}

FastAPI will automatically generate documentation at /docs.