# Custom Response Classes - File, HTML, Redirect, Streaming, etc.

There are several custom response classes you can use to create an instance and return them directly from your *path operations*.

Read more about it in the [FastAPI docs for Custom Response - HTML, Stream, File, others](https://fastapi.tiangolo.com/advanced/custom-response/).

You can import them directly from `fastapi.responses`:

```python
from fastapi.responses import (
    FileResponse,

* `datetime.timedelta`:
    * Pythonの`datetime.timedelta`です。
    * リクエストとレスポンスでは合計秒数の`float`で表現されます。
    * Pydanticでは「ISO 8601 time diff encoding」として表現することも可能です。<a href="https://docs.pydantic.dev/latest/concepts/serialization/" class="external-link" target="_blank">詳細はドキュメントを参照してください</a>。
* `frozenset`:
    * リクエストとレスポンスでは`set`と同じように扱われます:
        * リクエストでは、リストが読み込まれ、重複を排除して`set`に変換されます。

 <span style="background-color:#C4A000"><font color="#2E3436">│                                                     │</font></span>
 <span style="background-color:#C4A000"><font color="#2E3436">│  API docs: http://127.0.0.1:8000/docs               │</font></span>
 <span style="background-color:#C4A000"><font color="#2E3436">│                                                     │</font></span>

            if (server.getConfiguration() != null) {
                XmlNode dom = server.getDelegate().getConfiguration();
                List<XmlNode> children = dom.getChildren().stream()
                        .filter(c -> !"wagonProvider".equals(c.getName()))
                        .collect(Collectors.toList());
                dom = new XmlNodeImpl(dom.getName(), null, null, children, null);

- 路徑 `/items/{item_id}` 有一個 `int` 型別的 `item_id` 參數。
- 路徑 `/items/{item_id}` 有一個 `str` 型別的查詢參數 `q`。

### 互動式 API 文件

使用瀏覽器開啟 <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>。

你會看到自動生成的互動式 API 文件（由 <a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank">Swagger UI</a> 生成）：

that will be preserved when next/*.txt is concatenated into go1.XX.txt.)

When you add a file to the api/next directory, you must add at least one file

# > on the host machine. If we don't have --distinct_host_configuration=false,
# > the core TensorFlow code will be built once for the host and once for the
# > target platform.
# See also https://docs.bazel.build/versions/master/guide.html#build-configurations-and-cross-compilation
build --distinct_host_configuration=false

# Disable clang extension that rejects type definitions within offsetof. 

#     xla:          Build TF with XLA
#     tpu:          Build TF with TPU support
#     cuda:         Build with CUDA support.
#     cuda_clang    Build with CUDA Clang support.
#     rocm:         Build with AMD GPU support (rocm)
#     mkl:          Enable full mkl support.
#     nogcp:        Disable GCS support.
#     nonccl:       Disable nccl support.
#
#

	printEventNotifiers()
	printLambdaTargets()
}

// Prints startup message for Object API access, prints link to our SDK documentation.
func printObjectAPIMsg() {
	logger.Startup(color.Blue("\nDocs: ") + "https://docs.min.io")
}

func printLambdaTargets() {
	if globalLambdaTargetList == nil || globalLambdaTargetList.Empty() {
		return
	}

	arnMsg := color.Blue("Object Lambda ARNs: ")

## Caveat

If you need to perform heavy background computation and you don't necessarily need it to be run by the same process (for example, you don't need to share memory, variables, etc), you might benefit from using other bigger tools like <a href="https://docs.celeryq.dev" class="external-link" target="_blank">Celery</a>.