if (arg.startsWith("\"")) {
                // if we're in the process of building up another arg, push it and start over.
                // this is for the case: "-Dfoo=bar "-Dfoo2=bar two" (note the first unterminated quote)
                if (currentArg != null) {
                    cleaned.add(currentArg.toString());
                }

                // start building an argument here.

- Lancez le <abbr title="En anglais: debugger">débogueur</abbr> avec l'option "`Python: Current File (Integrated Terminal)`".

Il démarrera alors le serveur avec votre code **FastAPI**, s'arrêtera à vos points d'arrêt, etc.

Voici à quoi cela pourrait ressembler :

<img src="/img/tutorial/debugging/image01.png">

---

Si vous utilisez Pycharm, vous pouvez :

- Ouvrir le menu "Run".
- Sélectionnez l'option "Debug...".

<div class="termy">

```console
$ fastapi dev main.py

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Abra seu navegador em: <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

Você verá uma página simples como:

Skopiuj to do pliku `main.py`.

Uruchom serwer:

<div class="termy">

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

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
<span style="color: green;">INFO</span>:     Started reloader process [28720]
<span style="color: green;">INFO</span>:     Started server process [28722]
<span style="color: green;">INFO</span>:     Waiting for application startup.

<div class="termy">

```console
$ fastapi run main.py --root-path /api/v1

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Se você usar Hypercorn, ele também tem a opção `--root-path`.

/// note | "Detalhes Técnicos"

A especificação ASGI define um `root_path` para esse caso de uso.

h3,\nblockquote.quote-cyan h4,\nblockquote.quote-cyan h5,\nblockquote.quote-cyan h6 {\n  color: #17a2b8;\n}\n\nblockquote.quote-white {\n  border-color: #fff;\n}\n\nblockquote.quote-white h1,\nblockquote.quote-white h2,\nblockquote.quote-white h3,\nblockquote.quote-white h4,\nblockquote.quote-white h5,\nblockquote.quote-white h6 {\n  color: #fff;\n}\n\nblockquote.quote-gray {\n  border-color: #6c757d;\n}\n\nblockquote.quote-gray h1,\nblockquote.quote-gray h2,\nblockquote.quote-gray h3,\nblockquote.quote-gray h4...

h2,blockquote.quote-yellow h3,blockquote.quote-yellow h4,blockquote.quote-yellow h5,blockquote.quote-yellow h6{color:#ffc107}blockquote.quote-green{border-color:#28a745}blockquote.quote-green h1,blockquote.quote-green h2,blockquote.quote-green h3,blockquote.quote-green h4,blockquote.quote-green h5,blockquote.quote-green h6{color:#28a745}blockquote.quote-teal{border-color:#20c997}blockquote.quote-teal h1,blockquote.quote-teal h2,blockquote.quote-teal h3,blockquote.quote-teal h4,blockquote.quote-teal h5,blockquote.quote-teal...

<div class="termy">

```console
$ fastapi run main.py --root-path /api/v1

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

If you use Hypercorn, it also has the option `--root-path`.

/// note | "Technical Details"

The ASGI specification defines a `root_path` for this use case.

<div class="termy">

```console
$ OPENAPI_URL= uvicorn main:app

<span style="color: green;">INFO</span>:     Uvicorn running on http://127.0.0.1:8000 (Press CTRL+C to quit)
```

</div>

Then if you go to the URLs at `/openapi.json`, `/docs`, or `/redoc` you will just get a `404 Not Found` error like:

```JSON
{
    "detail": "Not Found"
}

**FastAPI** sait quoi faire dans chaque cas et comment réutiliser le même objet, afin que tous les paramètres de type `BackgroundTasks` soient fusionnés et que les tâches soient exécutées en arrière-plan :