meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and

No importa. **FastAPI** sabrá qué hacer.

/// note | Nota

Si no lo sabes, revisa la sección [Async: *"¿Con prisa?"*](../../async.md#in-a-hurry){.internal-link target=_blank} sobre `async` y `await` en la documentación.

///

## Integración con OpenAPI { #integrated-with-openapi }

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: Union[str, None] = None):
    return {"item_id": item_id, "q": q}
```

**Note**:

If you don't know, check the _"In a hurry?"_ section about <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">`async` and `await` in the docs</a>.

</details>

### Run it

Run the server with:

<div class="termy">

```console
$ fastapi dev main.py

in Source or Object form, provided that You meet the following conditions: 

a. You must give any other recipients of the Work or Derivative Works a copy 
of this License; and 

b. You must cause any modified files to carry prominent notices stating that 
You changed the files; and 

c. You must retain, in the Source form of any Derivative Works that You 
distribute, all copyright, patent, trademark, and attribution notices from 

@app.get("/items/{item_id}")
async def read_item(item_id: int, q: str = None):
    return {"item_id": item_id, "q": q}
```

**注**:

わからない場合は、<a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank">ドキュメントの`async` と `await`にある</a>"In a hurry?"セクションをチェックしてください。

</details>

### 実行

以下のコマンドでサーバーを起動します:

<div class="termy">

```console
$ uvicorn main:app --reload

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and

Es spielt keine Rolle. **FastAPI** weiß, was zu tun ist.

/// note | Hinweis

Wenn Ihnen das nichts sagt, lesen Sie den [Async: *„In Eile?“*](../../async.md#in-a-hurry){.internal-link target=_blank}-Abschnitt über `async` und `await` in der Dokumentation.

///

## Integriert in OpenAPI { #integrated-with-openapi }

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and