しかし、これはWebSocketのサーバーサイドに焦点を当て、実用的な例を示す最も簡単な方法です。

```Python hl_lines="2  6-38  41-43"
{!../../docs_src/websockets/tutorial001.py!}
```

## `websocket` を作成する

**FastAPI** アプリケーションで、`websocket` を作成します。

```Python hl_lines="1  46-47"
{!../../docs_src/websockets/tutorial001.py!}
```

/// note | "技術詳細"

`from starlette.websockets import WebSocket` を使用しても構いません.

//// tab | Python 3.9+

```Python hl_lines="7-9  12-13  16-17  21"
{!> ../../docs_src/generate_clients/tutorial001_py39.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="9-11  14-15  18  19  23"
{!> ../../docs_src/generate_clients/tutorial001.py!}
```

////

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="9-11  14-15  18  19  23"
{!> ../../docs_src/generate_clients/tutorial001.py!}
```

////

//// tab | 🐍 3️⃣.9️⃣ & 🔛

```Python hl_lines="7-9  12-13  16-17  21"
{!> ../../docs_src/generate_clients/tutorial001_py39.py!}
```

////

👀 👈 *➡ 🛠️* 🔬 🏷 👫 ⚙️ 📨 🚀 & 📨 🚀, ⚙️ 🏷 `Item` & `ResponseMessage`.

### 🛠️ 🩺

{!../../docs_src/dependencies/tutorial006.py!}
```

### 例外の発生

これらの依存関係は通常の依存関係と同じように、例外を`raise`発生させることができます:

```Python hl_lines="8 13"
{!../../docs_src/dependencies/tutorial006.py!}
```

### 戻り値

そして、値を返すことも返さないこともできますが、値は使われません。

つまり、すでにどこかで使っている通常の依存関係（値を返すもの）を再利用することができ、値は使われなくても依存関係は実行されます:

```Python hl_lines="9 14"
{!../../docs_src/dependencies/tutorial006.py!}
```

First, write all your **FastAPI** application as normally:

{* ../../docs_src/extending_openapi/tutorial001.py hl[1,4,7:9] *}

### Generate the OpenAPI schema

Then, use the same utility function to generate the OpenAPI schema, inside a `custom_openapi()` function:

{* ../../docs_src/extending_openapi/tutorial001.py hl[2,15:21] *}

### Modify the OpenAPI schema

```Python hl_lines="1"
{!../../docs_src/python_types/tutorial003.py!}
```

Editör değişkenlerin tiplerini bildiğinden, yalnızca otomatik tamamlama değil, hata kontrolleri de sağlar:

<img src="/img/python-types/image04.png">

Artık `age` değişkenini `str(age)` olarak kullanmanız gerektiğini biliyorsunuz:

```Python hl_lines="2"
{!../../docs_src/python_types/tutorial004.py!}
```

## Tip bildirme

```Python hl_lines="9-13"
{!> ../../docs_src/dependencies/tutorial002_py310.py!}
```

////

//// tab | Python 3.8+

```Python hl_lines="11-15"
{!> ../../docs_src/dependencies/tutorial002.py!}
```

////

注意用于创建类实例的 `__init__` 方法：

//// tab | Python 3.10+

```Python hl_lines="10"
{!> ../../docs_src/dependencies/tutorial002_py310.py!}
```

////

//// tab | Python 3.6+

✋️ ➡️ 🖊 👆 🕰 👂 🌕 📏 🔧 🔎 👈 🐥 🍖 ℹ 👆 💪.

➡️ ⚙️ 🧰 🚚 **FastAPI** 🍵 💂‍♂.

## ❔ ⚫️ 👀

➡️ 🥇 ⚙️ 📟 & 👀 ❔ ⚫️ 👷, & ⤴️ 👥 🔜 👟 🔙 🤔 ⚫️❔ 😥.

## ✍ `main.py`

📁 🖼 📁 `main.py`:

```Python
{!../../docs_src/security/tutorial001.py!}
```

## 🏃 ⚫️

/// info

🥇 ❎ <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

⚫️ 🔢 👈 💪 ✊ 🌐 🎏 🔢 👈 *➡ 🛠️ 🔢* 💪 ✊:

//// tab | 🐍 3️⃣.6️⃣ & 🔛

```Python hl_lines="8-11"
{!> ../../docs_src/dependencies/tutorial001.py!}
```

////

//// tab | 🐍 3️⃣.1️⃣0️⃣ & 🔛

```Python hl_lines="6-7"
{!> ../../docs_src/dependencies/tutorial001_py310.py!}
```

////

👈 ⚫️.

**2️⃣ ⏸**.

& ⚫️ ✔️ 🎏 💠 & 📊 👈 🌐 👆 *➡ 🛠️ 🔢* ✔️.

```Python hl_lines="13  15"
{!../../docs_src/custom_request_and_route/tutorial002.py!}
```

Se uma exceção ocorrer, a instância `Request` ainda estará em escopo, então podemos ler e fazer uso do corpo da requisição ao lidar com o erro:

```Python hl_lines="16-18"
{!../../docs_src/custom_request_and_route/tutorial002.py!}
```

## Classe `APIRoute` personalizada em um router