**FastAPI** tomará ese modelo, generará su JSON Schema y lo incluirá en el lugar correcto en OpenAPI.

Por ejemplo, para declarar otro response con un código de estado `404` y un modelo Pydantic `Message`, puedes escribir:

{* ../../docs_src/additional_responses/tutorial001_py39.py hl[18,22] *}

/// note | Nota

Ten en cuenta que debes devolver el `JSONResponse` directamente.

///

**FastAPI** nimmt dieses Modell, generiert dessen JSON-Schema und fügt es an der richtigen Stelle in OpenAPI ein.

Um beispielsweise eine weitere Response mit dem Statuscode `404` und einem Pydantic-Modell `Message` zu deklarieren, können Sie schreiben:

{* ../../docs_src/additional_responses/tutorial001_py39.py hl[18,22] *}

/// note | Hinweis

**FastAPI** will take that model, generate its JSON Schema and include it in the correct place in OpenAPI.

For example, to declare another response with a status code `404` and a Pydantic model `Message`, you can write:

{* ../../docs_src/additional_responses/tutorial001_py39.py hl[18,22] *}

/// note

Keep in mind that you have to return the `JSONResponse` directly.

///

        "openapi": "3.1.0",
        "info": {"title": "FastAPI", "version": "0.1.0"},
        "paths": {
            "/items/{item_id}": {
                "get": {
                    "responses": {
                        "404": {"description": "Item not found"},
                        "302": {"description": "The item was moved"},
                        "403": {"description": "Not enough privileges"},
                        "200": {

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Luego, si vas a las URLs en `/openapi.json`, `/docs`, o `/redoc`, solo obtendrás un error `404 Not Found` como:

```JSON
{
    "detail": "Not Found"
}

	const maxNanoSecondDigits = 9

	// Split string into seconds and sub-seconds parts.
	ss, sn, _ := strings.Cut(s, ".")

	// Parse the seconds.
	secs, err := strconv.ParseInt(ss, 10, 64)
	if err != nil {
		return time.Time{}, ErrHeader
	}
	if len(sn) == 0 {
		return time.Unix(secs, 0), nil // No sub-second values
	}

	// Parse the nanoseconds.

        assertEquals(0, responseData.getStatus());
        assertEquals(404, responseData.getHttpStatusCode());

        responseData = smbClient.doGet("smb1://[invalid]:445/share");
        assertEquals(0, responseData.getStatus());
        assertEquals(404, responseData.getHttpStatusCode());
    }

    public void test_maxContentLengthExceeded() throws Exception {

public class UnsignedBytesBenchmark {

  private byte[] ba1;
  private byte[] ba2;
  private byte[] ba3;
  private byte[] ba4;
  private Comparator<byte[]> javaImpl;
  private Comparator<byte[]> unsafeImpl;

  // 4, 8, 64, 1K, 1M, 1M (unaligned), 64M, 64M (unaligned)
  // @Param({"4", "8", "64", "1024", "1048576", "1048577", "6710884", "6710883"})
  @Param({"4", "8", "64", "1024"})
  private int length;

  @BeforeExperiment

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Wenn Sie dann zu den URLs unter `/openapi.json`, `/docs` oder `/redoc` gehen, erhalten Sie lediglich einen `404 Not Found`-Fehler, wie:

```JSON
{
    "detail": "Not Found"
}

        raise InternalError(
            f"The portal gun is too dangerous to be owned by {username}"
        )
    if item_id != "plumbus":
        raise HTTPException(
            status_code=404, detail="Item not found, there's only a plumbus here"
        )