!!! info "Información sobre `@decorator`"
    Esa sintaxis `@algo` se llama un "decorador" en Python.

    Lo pones encima de una función. Es como un lindo sombrero decorado (creo que de ahí salió el concepto).

    Un "decorador" toma la función que tiene debajo y hace algo con ella.

* **Extensible**:
    * Pydantic permite que se definan tipos de datos a la medida o puedes extender la validación con métodos en un modelo decorado con el <abbr title="en inglés: validator decorator"> decorador de validación</abbr>.

* **Extensível**:
    * Pydantic permite que tipos de dados personalizados sejam definidos ou você pode estender a validação com métodos em um modelo decorado com seu decorador de validador.

                }
            ]
        }
    )


def test_decorator_depends_q_foo():
    response = client.get("/decorator-depends/?q=foo")
    assert response.status_code == 200
    assert response.json() == {"in": "decorator-depends"}


def test_decorator_depends_q_foo_skip_100_limit_200():
    response = client.get("/decorator-depends/?q=foo&skip=100&limit=200")
    assert response.status_code == 200

    You put it on top of a function. Like a pretty decorative hat (I guess that's where the term came from).

    A "decorator" takes the function below and does something with it.

    In our case, this decorator tells **FastAPI** that the function below corresponds to the **path** `/` with an **operation** `get`.

    It is the "**path operation decorator**".

You can also use the other operations:

* `@app.post()`

But you can also declare the `Response` that you want to be used, in the *path operation decorator*.

The contents that you return from your *path operation function* will be put inside of that `Response`.

* <abbr title="Bir HTTP GET metodu"><code>get</code> operasyonu</abbr> ile
* `/` yoluna gelen istekler

!!! info "`@decorator` Bilgisi"
    Python'da `@something` sözdizimi "<abbr title="Decorator">dekoratör</abbr>" olarak adlandırılır.

    Dekoratörler, dekoratif bir şapka gibi (sanırım terim buradan geliyor) fonksiyonların üzerlerine yerleştirilirler.

In those cases, you can use the *path operation decorator* parameter `response_model` instead of the return type.

You can use the `response_model` parameter in any of the *path operations*:

* `@app.get()`
* `@app.post()`
* `@app.put()`
* `@app.delete()`
* etc.

  interface Backend {
    fun nanoTime(): Long

    fun coordinatorNotify(taskRunner: TaskRunner)

    fun coordinatorWait(
      taskRunner: TaskRunner,
      nanos: Long,
    )

    fun <T> decorate(queue: BlockingQueue<T>): BlockingQueue<T>

    fun execute(
      taskRunner: TaskRunner,
      runnable: Runnable,
    )
  }

  class RealBackend(threadFactory: ThreadFactory) : Backend {

#### Определите *декоратор операции пути (path operation decorator)*

```Python hl_lines="6"
{!../../../docs_src/first_steps/tutorial001.py!}
```

Декоратор `@app.get("/")` указывает **FastAPI**, что функция, прямо под ним, отвечает за обработку запросов, поступающих по адресу:

* путь `/`
* использующих <abbr title="HTTP GET метод"><code>get</code> операцию</abbr>

!!! info "`@decorator` Дополнительная информация"