What features of patterns in FastAPI help distinguish this framework from other web frameworks?

FastAPI stands out among other web frameworks due to the following features:

• Automatic documentation generation: based on Python type annotations, interactive API documents (Swagger UI, ReDoc) are automatically created.
• Use of type annotations for data validation and serialization, reducing errors and simplifying code.
• Asynchronous support out of the box, allowing efficient handling of a large number of requests.
• High performance, comparable to Node.js and Go, thanks to the use of Starlette and Pydantic.

Example of a simple endpoint in FastAPI:

from fastapi import FastAPI
from pydantic import BaseModel

app = FastAPI()

class Item(BaseModel):
    name: str
    price: float

@app.post("/items/")
async def create_item(item: Item):
    return {"item_name": item.name, "item_price": item.price}

Here, types and data validation are explicitly described, and documentation is generated automatically.