也可以在生成 `response` 之后、返回之前添加代码。

例如，你可以添加一个自定义请求头 `X-Process-Time`，其值为处理请求并生成响应所花费的秒数：

{* ../../docs_src/middleware/tutorial001_py310.py hl[10,12:13] *}

/// tip

这里我们使用 [`time.perf_counter()`](https://docs.python.org/3/library/time.html#time.perf_counter) 而不是 `time.time()`，因为在这类场景中它可能更精确。🤓

///

## 多个中间件的执行顺序 { #multiple-middleware-execution-order }

///

參數 `status_code` 接受一個數字作為 HTTP 狀態碼。

/// info | 資訊

`status_code` 也可以接收一個 `IntEnum`，例如 Python 的 [`http.HTTPStatus`](https://docs.python.org/3/library/http.html#http.HTTPStatus)。

///

它會：

* 在回應中傳回該狀態碼。
* 在 OpenAPI 結構中如此記錄（因此也會反映在使用者介面中）：

<img src="/img/tutorial/response-status-code/image01.png">

/// note | 注意

有些回應碼（見下一節）表示回應不包含本文（body）。

// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
@IgnoreJRERequirement // We opt into library desugaring for our tests.
public class MapComputeTester<K, V> extends AbstractMapTester<K, V> {
  @MapFeature.Require({SUPPORTS_PUT, SUPPORTS_REMOVE})
  public void testCompute_absentToPresent() {
    assertEquals(

也可以在產生出 `response` 之後、回傳之前執行程式碼。

例如，你可以新增一個自訂標頭 `X-Process-Time`，其內容為處理請求並產生回應所花費的秒數：

{* ../../docs_src/middleware/tutorial001_py310.py hl[10,12:13] *}

/// tip

這裡我們使用 [`time.perf_counter()`](https://docs.python.org/3/library/time.html#time.perf_counter) 而不是 `time.time()`，因為在這些用例中它可能更精確。🤓

///

## 多個中介軟體的執行順序 { #multiple-middleware-execution-order }

/*
 * © 2025 CodeLibs, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of

<img src="/img/tutorial/security/image12.png">

## 사용자명 확인하기 { #check-the-username }

더 완전한 예시입니다.

dependency를 사용해 사용자명과 비밀번호가 올바른지 확인하세요.

이를 위해 Python 표준 모듈 [`secrets`](https://docs.python.org/3/library/secrets.html)를 사용해 사용자명과 비밀번호를 확인합니다.

`secrets.compare_digest()`는 `bytes` 또는 ASCII 문자(영어에서 사용하는 문자)만 포함한 `str`을 받아야 합니다. 즉, `Sebastián`의 `á` 같은 문자가 있으면 동작하지 않습니다.

  for _s in _site_packages_dirs:
    _plugin_dir = _os.path.join(_s, "tensorflow-plugins")
    if _os.path.exists(_plugin_dir):
      _ll.load_library(_plugin_dir)
      # Load Pluggable Device Library
      _ll.load_pluggable_device_library(_plugin_dir)

if _os.getenv("TF_PLUGGABLE_DEVICE_LIBRARY_PATH", ""):
  _ll.load_pluggable_device_library(
      _os.getenv("TF_PLUGGABLE_DEVICE_LIBRARY_PATH")
  )

/**
 * A task to gather information about the dependencies and export them into a csv file.
 * <p>
 * The following information is gathered:
 * <ul>
 *     <li>name: name that identifies the library (groupId:artifactId)</li>
 *     <li>version</li>
 *     <li>URL: link to have more information about the dependency.</li>

| Web Framework | LastaFlute (MVC framework) |
| DI Container | Lasta Di |
| Data Access | DBFlute (type-safe ORM for OpenSearch) |
| Search Engine | OpenSearch |
| App Server | Embedded Tomcat |
| Crawler | fess-crawler library |
| Scheduler | Lasta Job |
| Logging | Log4j2 |
| Testing | JUnit 4/5, UTFlute, REST Assured |

## Development Commands

### Setup
```bash

/// tip

If you need to call blocking code from inside of an async function, or an async function from inside of a blocking function, you could use [Asyncer](https://asyncer.tiangolo.com), a sibling library to FastAPI.

///

### `yield from` { #yield-from }