0162; 0163; Case map
   0164; 0165; Case map
   0166; 0167; Case map
   0168; 0169; Case map
   016A; 016B; Case map
   016C; 016D; Case map
   016E; 016F; Case map
   0170; 0171; Case map
   0172; 0173; Case map
   0174; 0175; Case map
   0176; 0177; Case map
   0178; 00FF; Case map
   0179; 017A; Case map
   017B; 017C; Case map
   017D; 017E; Case map
   017F; 0073; Case map
   0181; 0253; Case map

* Учётных данных (включая заголовки Authorization, куки и т.п.).
* Отдельных HTTP-методов (`POST`, `PUT`) или всех вместе, используя `"*"`.
* Отдельных HTTP-заголовков или всех вместе, используя `"*"`.

```Python hl_lines="2  6-11  13-19"
{!../../../docs_src/cors/tutorial001.py!}
```

Erstellen Sie einen echten JWT-Zugriffstoken und geben Sie ihn zurück.

=== "Python 3.10+"

    ```Python hl_lines="117-132"
    {!> ../../../docs_src/security/tutorial004_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="117-132"
    {!> ../../../docs_src/security/tutorial004_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="118-133"

    {!> ../../../docs_src/response_model/tutorial004_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="11  13-14"
    {!> ../../../docs_src/response_model/tutorial004_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="11  13-14"
    {!> ../../../docs_src/response_model/tutorial004.py!}
    ```

* 处理数据：
    * 例如，假设您收到的文件必须经过一个缓慢的过程，您可以返回一个"Accepted"(HTTP 202)响应并在后台处理它。

## 使用 `BackgroundTasks`

首先导入 `BackgroundTasks` 并在 *路径操作函数* 中使用类型声明 `BackgroundTasks` 定义一个参数：

```Python hl_lines="1  13"
{!../../../docs_src/background_tasks/tutorial001.py!}
```

**FastAPI** 会创建一个 `BackgroundTasks` 类型的对象并作为该参数传入。

## 创建一个任务函数

创建要作为后台任务运行的函数。

它只是一个可以接收参数的标准函数。

  // For example, a handler called "runc" might specify that the runc OCI
  // runtime (using native Linux containers) will be used to run the containers
  // in a pod.
  // The handler must be lowercase, conform to the DNS Label (RFC 1123) requirements,
  // and is immutable.
  optional string handler = 2;

  // overhead represents the resource overhead associated with running a pod for a
  // given RuntimeClass. For more details, see

* 🚮 ⚫️ "🛠️" 👆 **FastAPI** 🈸.

👆 💪 ✔ 🚥 👆 👩‍💻 ✔:

* 🎓 (✔ 🎚, 🍪, ♒️).
* 🎯 🇺🇸🔍 👩‍🔬 (`POST`, `PUT`) ⚖️ 🌐 👫 ⏮️ 🃏 `"*"`.
* 🎯 🇺🇸🔍 🎚 ⚖️ 🌐 👫 ⏮️ 🃏 `"*"`.

```Python hl_lines="2  6-11  13-19"
{!../../../docs_src/cors/tutorial001.py!}
```

🔢 🔢 ⚙️ `CORSMiddleware` 🛠️ 🚫 🔢, 👆 🔜 💪 🎯 🛠️ 🎯 🇨🇳, 👩‍🔬, ⚖️ 🎚, ✔ 🖥 ✔ ⚙️ 👫 ✖️-🆔 🔑.

📄 ❌ 🐕‍🦺:

pkg syscall (freebsd-arm64), const AF_VENDOR36 ideal-int
pkg syscall (freebsd-arm64), const AF_VENDOR37 = 113
pkg syscall (freebsd-arm64), const AF_VENDOR37 ideal-int
pkg syscall (freebsd-arm64), const AF_VENDOR38 = 115
pkg syscall (freebsd-arm64), const AF_VENDOR38 ideal-int
pkg syscall (freebsd-arm64), const AF_VENDOR39 = 117
pkg syscall (freebsd-arm64), const AF_VENDOR39 ideal-int
pkg syscall (freebsd-arm64), const AF_VENDOR40 = 119

## Utiliser `BackgroundTasks`

Pour commencer, importez `BackgroundTasks` et définissez un paramètre dans votre *fonction de chemin* avec `BackgroundTasks` comme type déclaré.

```Python hl_lines="1  13"
{!../../../docs_src/background_tasks/tutorial001.py!}
```

**FastAPI** créera l'objet de type `BackgroundTasks` pour vous et le passera comme paramètre.

## Créer une fonction de tâche

pkg syscall (darwin-arm64), const DLT_LINUX_SLL = 113
pkg syscall (darwin-arm64), const DLT_LINUX_SLL ideal-int
pkg syscall (darwin-arm64), const DLT_LOOP = 108
pkg syscall (darwin-arm64), const DLT_LOOP ideal-int
pkg syscall (darwin-arm64), const DLT_NULL = 0
pkg syscall (darwin-arm64), const DLT_NULL ideal-int
pkg syscall (darwin-arm64), const DLT_PFLOG = 117
pkg syscall (darwin-arm64), const DLT_PFLOG ideal-int