def test_get_starlette_item():
    response = client.get("/starlette-items/foo")
    assert response.status_code == 200, response.text
    assert response.json() == {"item": "The Foo Wrestlers"}


def test_get_starlette_item_not_found():
    response = client.get("/starlette-items/bar")
    assert response.status_code == 404, response.text
    assert response.headers.get("x-error") is None

## About Starlette { #about-starlette }

You shouldn't pin the version of `starlette`.

Different versions of **FastAPI** will use a specific newer version of Starlette.

So, you can just let **FastAPI** use the correct Starlette version.

## About Pydantic { #about-pydantic }

## Sobre Starlette { #about-starlette }

No deberías fijar la versión de `starlette`.

Diferentes versiones de **FastAPI** utilizarán una versión más reciente específica de Starlette.

Así que, puedes simplemente dejar que **FastAPI** use la versión correcta de Starlette.

## Sobre Pydantic { #about-pydantic }

**FastAPI** then takes that JSON Schema data and puts it in OpenAPI, apart from all the other things it does.

///

### <a href="https://www.starlette.dev/" class="external-link" target="_blank">Starlette</a> { #starlette }

Starlette is a lightweight <abbr title="The new standard for building asynchronous Python web applications">ASGI</abbr> framework/toolkit, which is ideal for building high-performance asyncio services.

from starlette.websockets import WebSocket as WebSocket  # noqa
from starlette.websockets import WebSocketDisconnect as WebSocketDisconnect  # noqa

## Adding ASGI middlewares { #adding-asgi-middlewares }

As **FastAPI** is based on Starlette and implements the <abbr title="Asynchronous Server Gateway Interface">ASGI</abbr> specification, you can use any ASGI middleware.

A middleware doesn't have to be made for FastAPI or Starlette to work, as long as it follows the ASGI spec.

Класс `BackgroundTasks` приходит напрямую из <a href="https://www.starlette.dev/background/" class="external-link" target="_blank">`starlette.background`</a>.

Он импортируется/включается прямо в FastAPI, чтобы вы могли импортировать его из `fastapi` и избежать случайного импорта альтернативного `BackgroundTask` (без `s` на конце) из `starlette.background`.

/// note | Technical Details

You could also use `from starlette.responses import Response` or `from starlette.responses import JSONResponse`.

**FastAPI** provides the same `starlette.responses` as `fastapi.responses` just as a convenience for you, the developer. But most of the available responses come directly from Starlette.

### 추가 정보

/// note | 기술적 세부사항

`from starlette.responses import Response` 또는 `from starlette.responses import JSONResponse`를 사용할 수도 있습니다.

**FastAPI**는 개발자의 편의를 위해 `fastapi.responses`로 동일한 `starlette.responses`를 제공합니다. 그러나 대부분의 응답은 Starlette에서 직접 제공됩니다.

또한 `Response`는 헤더와 쿠키를 설정하는 데 자주 사용되므로, **FastAPI**는 이를 `fastapi.Response`로도 제공합니다.

///

## Технічні деталі

Клас `BackgroundTasks` походить безпосередньо з <a href="https://www.starlette.dev/background/" class="external-link" target="_blank">`starlette.background`</a>.

Він імпортується безпосередньо у FastAPI, щоб Ви могли використовувати його з `fastapi` і випадково не імпортували `BackgroundTask` (без s в кінці) з `starlette.background`.