from collections.abc import Generator
from contextlib import contextmanager
from typing import Annotated, Any

import pytest
from fastapi import Depends, FastAPI, WebSocket
from fastapi.testclient import TestClient


class Session:
    def __init__(self) -> None:
        self.data = ["foo", "bar", "baz"]
        self.open = True

    def __iter__(self) -> Generator[str, None, None]:
        for item in self.data:

from fastapi import FastAPI
from fastapi.staticfiles import StaticFiles

app = FastAPI()

# 역사, 디자인 그리고 미래

어느 날, [한 FastAPI 사용자](https://github.com/fastapi/fastapi/issues/3#issuecomment-454956920)가 이렇게 물었습니다:

> 이 프로젝트의 역사를 알려 주실 수 있나요? 몇 주 만에 멋진 결과를 낸 것 같아요. [...]

여기서 그 역사에 대해 간단히 설명하겠습니다.

---

## 대안

저는 여러 해 동안 머신러닝, 분산 시스템, 비동기 작업, NoSQL 데이터베이스 같은 복잡한 요구사항을 가진 API를 개발하며 여러 팀을 이끌어 왔습니다.

이 과정에서 많은 대안을 조사하고, 테스트하며, 사용해야 했습니다. **FastAPI**의 역사는 그 이전에 나왔던 여러 도구의 역사와 밀접하게 연관되어 있습니다.

## Create a `websocket` { #create-a-websocket }

In your **FastAPI** application, create a `websocket`:

{* ../../docs_src/websockets/tutorial001_py39.py hl[1,46:47] *}

/// note | Technical Details

You could also use `from starlette.websockets import WebSocket`.

**FastAPI** provides the same `WebSocket` directly just as a convenience for you, the developer. But it comes directly from Starlette.

from typing import Annotated

from fastapi import Body, FastAPI
from pydantic import BaseModel

app = FastAPI()


class Item(BaseModel):
    name: str
    description: str | None = None
    price: float
    tax: float | None = None


@app.put("/items/{item_id}")
async def update_item(
    *,
    item_id: int,
    item: Annotated[
        Item,
        Body(
            examples=[
                {

from typing import Annotated

from fastapi import Depends, FastAPI

app = FastAPI()


fake_items_db = [{"item_name": "Foo"}, {"item_name": "Bar"}, {"item_name": "Baz"}]


class CommonQueryParams:
    def __init__(self, q: str | None = None, skip: int = 0, limit: int = 100):
        self.q = q
        self.skip = skip
        self.limit = limit


@app.get("/items/")

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: list = Query(default=[])):
    query_items = {"q": q}

Here are some of the **GraphQL** libraries that have **ASGI** support. You could use them with **FastAPI**:

* <a href="https://strawberry.rocks/" class="external-link" target="_blank">Strawberry</a> 🍓
    * With <a href="https://strawberry.rocks/docs/integrations/fastapi" class="external-link" target="_blank">docs for FastAPI</a>
* <a href="https://ariadnegraphql.org/" class="external-link" target="_blank">Ariadne</a>

# FastAPI Uygulamasını Bulut Sağlayıcılar Üzerinde Yayınlama

FastAPI uygulamasını yayınlamak için hemen hemen **herhangi bir bulut sağlayıcıyı** kullanabilirsiniz.

Büyük bulut sağlayıcıların çoğu FastAPI uygulamasını yayınlamak için kılavuzlara sahiptir.

## Bulut Sağlayıcılar - Sponsorlar

It is imported/included directly into FastAPI so that you can import it from `fastapi` and avoid accidentally importing the alternative `BackgroundTask` (without the `s` at the end) from `starlette.background`.

By only using `BackgroundTasks` (and not `BackgroundTask`), it's then possible to use it as a *path operation function* parameter and have **FastAPI** handle the rest for you, just like when using the `Request` object directly.