403: {"description": "Not enough privileges"},
}


app = FastAPI()


@app.get(
    "/items/{item_id}",
    response_model=Item,
    responses={**responses, 200: {"content": {"image/png": {}}}},
)
async def read_item(item_id: str, img: bool | None = None):
    if img:
        return FileResponse("image.png", media_type="image/png")
    else:

                    contentLength += title.length();
                }
                if (doc.get(indexFieldContent) instanceof final String content) {
                    contentLength += content.length();
                }
                doc.put(indexFieldContentLength, contentLength);
            }
            if (!doc.containsKey(indexFieldFavoriteCount)) {

* `allow_headers` - Список HTTP-заголовків запиту, які підтримуються для міждоменних запитів. За замовчуванням `[]`. Ви можете використовувати `['*']`, щоб дозволити всі заголовки. Заголовки `Accept`, `Accept-Language`, `Content-Language` і `Content-Type` завжди дозволені для [простих CORS-запитів](https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests).

                    "get": {
                        "responses": {
                            "200": {
                                "description": "Successful Response",
                                "content": {"application/json": {"schema": {}}},
                            }
                        },
                        "summary": "Read Item",
                        "operationId": "read_item_items__get",

class GzipRequest(Request):
    async def body(self) -> bytes:
        if not hasattr(self, "_body"):
            body = await super().body()
            if "gzip" in self.headers.getlist("Content-Encoding"):
                body = gzip.decompress(body)
            self._body = body
        return self._body


class GzipRoute(APIRoute):
    def get_route_handler(self) -> Callable:

                        "responses": {
                            "200": {
                                "description": "Successful Response",
                                "content": {"application/json": {"schema": {}}},
                            }
                        },
                    }
                }
            },
            "servers": [{"url": "/api/v1"}],
        }

Por exemplo, você não pode colocar um modelo do Pydantic em uma `JSONResponse` sem antes convertê-lo em um `dict` com todos os tipos de dados (como `datetime`, `UUID`, etc) convertidos para tipos compatíveis com JSON.

Para esses casos, você pode usar o `jsonable_encoder` para converter seus dados antes de repassá-los para a resposta:

{* ../../docs_src/response_directly/tutorial001_py310.py hl[5:6,20:21] *}

			if err != nil {
				return err
			}
		}

		// If the context does not contain the bucket key
		// we must add it for key generation. However,
		// the context must be stored exactly like the
		// client provided it. Therefore, we create a copy
		// of the client provided context and add the bucket
		// key, if not present.
		kmsCtx := kms.Context{}
		maps.Copy(kmsCtx, cryptoCtx)
		if _, ok := kmsCtx[bucket]; !ok {

      apply {
        callTimeout = checkDuration("duration", duration)
      }

    /**
     * Sets the default connect timeout for new connections. A value of 0 means no timeout,
     * otherwise values must be between 1 and [Integer.MAX_VALUE] when converted to milliseconds.
     *
     * The connect timeout is applied when connecting a TCP socket to the target host. The default
     * value is 10 seconds.
     */

## 上下文管理器 { #context-managers }

### 什么是“上下文管理器” { #what-are-context-managers }

“上下文管理器”是你可以在 `with` 语句中使用的任意 Python 对象。

例如，[你可以用 `with` 来读取文件](https://docs.python.org/3/tutorial/inputoutput.html#reading-and-writing-files)：

```Python