Você também pode defini-la como uma função normal em vez de `async def`:

```Python hl_lines="7"
{!../../../docs_src/first_steps/tutorial003.py!}
```

!!! note "Nota"
    Se você não sabe a diferença, verifique o [Async: *"Com pressa?"*](../async.md#com-pressa){.internal-link target=_blank}.

### Passo 5: retorne o conteúdo

```Python hl_lines="8"
{!../../../docs_src/first_steps/tutorial001.py!}
```

자동 대화형 API 문서를 볼 수 있습니다 (<a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank">Swagger UI</a> 제공):

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-01-swagger-ui-simple.png)

### 대안 API 문서

## ✍ `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>.

    🤶 Ⓜ. `pip install python-multipart`.

    👉 ↩️ **Oauth2️⃣** ⚙️ "📨 📊" 📨 `username` &amp; `password`.

🏃 🖼 ⏮️:

<div class="termy">

```console

=== "Python 3.9+"

    ```Python hl_lines="8"
    {!> ../../../docs_src/security/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python  hl_lines="7"
    {!> ../../../docs_src/security/tutorial001_an.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

    ```Python hl_lines="6"

## `main.py`を作成

`main.py`に、下記の例をコピーします:

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

## 実行

!!! info "情報"
    まず<a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>をインストールします。

    例えば、`pip install python-multipart`。

    これは、**OAuth2**が `ユーザー名` や `パスワード` を送信するために、「フォームデータ」を使うからです。

例を実行します:

<div class="termy">

```console

    ```Python hl_lines="6"
    {!> ../../../docs_src/security/tutorial001.py!}
    ```

!!! tip "Tipp"
    Hier bezieht sich `tokenUrl="token"` auf eine relative URL `token`, die wir noch nicht erstellt haben. Da es sich um eine relative URL handelt, entspricht sie `./token`.

Możesz również zdefiniować to jako normalną funkcję zamiast `async def`:

```Python hl_lines="7"
{!../../../docs_src/first_steps/tutorial003.py!}
```

!!! note
    Jeśli nie znasz różnicy, sprawdź [Async: *"In a hurry?"*](../async.md#in-a-hurry){.internal-link target=_blank}.

### Krok 5: zwróć zawartość

```Python hl_lines="8"
{!../../../docs_src/first_steps/tutorial001.py!}
```

```

</div>

In the output, there's a line with something like:

```hl_lines="4"
INFO:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

That line shows the URL where your app is being served, in your local machine.

### Check it

Open your browser at <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.