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

## 检查用户名 { #check-the-username }

以下是更完整的示例。

使用依赖项检查用户名与密码是否正确。

为此要使用 Python 标准模块 [`secrets`](https://docs.python.org/3/library/secrets.html) 检查用户名与密码。

`secrets.compare_digest()` 需要仅包含 ASCII 字符（英语字符）的 `bytes` 或 `str`，这意味着它不适用于像`á`一样的字符，如 `Sebastián`。

为了解决这个问题，我们首先将 `username` 和 `password` 转换为使用 UTF-8 编码的 `bytes` 。

```

If you are on mac this'll warn you that you downloaded the shared library from
the internet. You'll need to go to settings and allow it to run.

The profiler tells you it'll be more accurate if you install debug symbols

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

## 檢查使用者名稱 { #check-the-username }

以下是一個更完整的範例。

使用一個依賴來檢查使用者名稱與密碼是否正確。

為此，使用 Python 標準模組 [`secrets`](https://docs.python.org/3/library/secrets.html) 來比對使用者名稱與密碼。

`secrets.compare_digest()` 需要接收 `bytes`，或是只包含 ASCII 字元（英文字符）的 `str`。這表示它無法處理像 `á` 這樣的字元，例如 `Sebastián`。

為了處理這點，我們會先將 `username` 與 `password` 以 UTF-8 編碼成 `bytes`。

/// tip

You could use any other SQL or NoSQL database library you want (in some cases called <abbr title="Object Relational Mapper: a fancy term for a library where some classes represent SQL tables and instances represent rows in those tables">"ORMs"</abbr>), FastAPI doesn't force you to use anything. 😎

///

/* jcifs smb client library in Java
 * Copyright (C) 2000  "Michael B. Allen" <jcifs at samba dot org>
 *
 * 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,

    val event = listener.removeUpToEvent(ConnectionEvent.ConnectFailed::class.java)
    assertThat(event.route.socketAddress).isEqualTo(expectedAddress)

    // Read error: ssl=0x7fd1d8d0fee8: Failure in SSL library, usually a protocol error
    if (!platform.isConscrypt()) {
      assertThat(event.exception.message).isIn(
        "Unexpected handshake message: client_hello",

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

/// tip | 豆知識

ここでは、これらのユースケースに対してより正確になり得るため、`time.time()` の代わりに [`time.perf_counter()`](https://docs.python.org/3/library/time.html#time.perf_counter) を使用しています。 🤓

///

## 複数ミドルウェアの実行順序 { #multiple-middleware-execution-order }

   * href="https://msdn.microsoft.com/en-us/library/windows/desktop/dd562994(v=vs.85).aspx">file
   * name extensions for Windows Media metafiles</a>.
   *
   * @since 20.0
   */
  public static final MediaType WMA_AUDIO = createConstant(AUDIO_TYPE, "x-ms-wma");

  /**
   * Windows Media metafiles. For more information, see <a
   * href="https://msdn.microsoft.com/en-us/library/windows/desktop/dd562994(v=vs.85).aspx">file

It will be defined in OpenAPI with `anyOf`.

To do that, use the standard Python type hint [`typing.Union`](https://docs.python.org/3/library/typing.html#typing.Union):

/// note

 *  New: The `okhttp-zstd` module negotiates [Zstandard (zstd)][zstd] compression with servers that
    support it. It integrates a new (unstable) [ZSTD-KMP] library, also from Square. Enable it like
    this:

    ```kotlin
    val client = OkHttpClient.Builder()
      .addInterceptor(CompressionInterceptor(Zstd, Gzip))
      .build()
    ```