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

=== "Python 3.9+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/body_nested_models/tutorial004_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/body_nested_models/tutorial004.py!}
    ```

Das würde bedeuten, dass **FastAPI** einen Body erwartet wie:

    ```

=== "Python 3.9+"

    ```Python hl_lines="19"
    {!> ../../../docs_src/dependencies/tutorial002_an_py39.py!}
    ```

=== "Python 3.6+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/dependencies/tutorial002_an.py!}
    ```

=== "Python 3.10+ без Annotated"

    !!! tip "Подсказка"
        Рекомендуется использовать версию с `Annotated` если возможно.

* (Optionnellement) comprendre ce que vous, en tant que développeur, devez savoir sur HTTPS.
* Configurer un cluster en mode Docker Swarm avec HTTPS automatique, même sur un simple serveur à 5 dollars US/mois. En environ **20 min**.
* Générer et déployer une application **FastAPI** complète, en utilisant votre cluster Docker Swarm, avec HTTPS, etc. En environ **10 min**.

处理依赖项时，**FastAPI** 以如下方式调用 `checker`：

```Python
checker(q="somequery")
```

……并用*路径操作函数*的参数 `fixed_content_included` 返回依赖项的值：

```Python hl_lines="20"
{!../../../docs_src/dependencies/tutorial011.py!}
```

!!! tip "提示"

    本章示例有些刻意，也看不出有什么用处。

    这个简例只是为了说明高级依赖项的运作机制。

    在有关安全的章节中，工具函数将以这种方式实现。

& 🕐❔ ❎ 🔗, **FastAPI** 🔜 🤙 👉 `checker` 💖:

```Python
checker(q="somequery")
```

...& 🚶‍♀️ ⚫️❔ 👈 📨 💲 🔗 👆 *➡ 🛠️ 🔢* 🔢 `fixed_content_included`:

```Python hl_lines="20"
{!../../../docs_src/dependencies/tutorial011.py!}
```

!!! tip
    🌐 👉 💪 😑 🎭. & ⚫️ 💪 🚫 📶 🆑 ❔ ⚫️ ⚠.

    👫 🖼 😫 🙅, ✋️ 🎦 ❔ ⚫️ 🌐 👷.

    📃 🔃 💂‍♂, 📤 🚙 🔢 👈 🛠️ 👉 🎏 🌌.

And you can also declare body parameters as optional, by setting the default to `None`:

=== "Python 3.10+"

    ```Python hl_lines="18-20"
    {!> ../../../docs_src/body_multiple_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="18-20"
    {!> ../../../docs_src/body_multiple_params/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="19-21"

But FastAPI also supports using <a href="https://docs.python.org/3/library/dataclasses.html" class="external-link" target="_blank">`dataclasses`</a> the same way:

```Python hl_lines="1  7-12  19-20"
{!../../../docs_src/dataclasses/tutorial001.py!}
```

```Python hl_lines="1  4  7-9"
{!../../../docs_src/extending_openapi/tutorial001.py!}
```

### 🏗 🗄 🔗

⤴️, ⚙️ 🎏 🚙 🔢 🏗 🗄 🔗, 🔘 `custom_openapi()` 🔢:

```Python hl_lines="2  15-20"
{!../../../docs_src/extending_openapi/tutorial001.py!}
```

### 🔀 🗄 🔗

🔜 👆 💪 🚮 📄 ↔, ❎ 🛃 `x-logo` `info` "🎚" 🗄 🔗:

```Python hl_lines="21-23"
{!../../../docs_src/extending_openapi/tutorial001.py!}

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

=== "Python 3.9+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/body_nested_models/tutorial004_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/body_nested_models/tutorial004.py!}
    ```

Это означает, что **FastAPI** будет ожидать тело запроса, аналогичное этому:

```Python hl_lines="26"
{!../../../docs_src/custom_request_and_route/tutorial003.py!}
```

本例中，*路径操作*下的 `router` 使用自定义的 `TimedRoute` 类，并在响应中包含输出生成响应时间的 `X-Response-Time` 响应头：

```Python hl_lines="13-20"
{!../../../docs_src/custom_request_and_route/tutorial003.py!}