## Create a Pull Request { #create-a-pull-request }

You can [contribute](contributing.md) to the source code with Pull Requests, for example:

* To fix a typo you found on the documentation.
* To share an article, video, or podcast you created or found about FastAPI by [editing this file](https://github.com/fastapi/fastapi/edit/master/docs/en/data/external_links.yml).
    * Make sure you add your link to the start of the corresponding section.

                "application/vnd.openxmlformats-officedocument.wordprocessingml.document", "text/html", "text/plain", "application/json",
                "application/xml", "audio/mp3", "video/mp4", "application/postscript" };

        for (final String mimeType : mimeTypes) {
            assertEquals("Extension for " + mimeType + " should be empty", "", generator.getExtensionFromMimeType(mimeType));
        }

* `description: Union[str, None] = None` (ou `str | None = None` en Python 3.10) a une valeur par défaut `None`.
* `tax: float = 10.5` a une valeur par défaut `10.5`.
* `tags: List[str] = []` a une valeur par défaut de liste vide : `[]`.

mais vous pourriez vouloir les omettre du résultat si elles n'ont pas été réellement stockées.

Par exemple, dans `app/main.py` vous pourriez avoir une ligne comme :

```
from app.routers import items
```

///

* Le répertoire `app` contient tout. Et il a un fichier vide `app/__init__.py`, c'est donc un « package Python » (une collection de « modules Python ») : `app`.

 * clicking a relative link on a specified page. For example:
 *
 * ```java
 * HttpUrl base = HttpUrl.parse("https://www.youtube.com/user/WatchTheDaily/videos");
 * HttpUrl link = base.resolve("../../watch?v=cbP2N1BQdYc");
 * System.out.println(link);
 * ```
 *
 * which prints:
 *
 * ```
 * https://www.youtube.com/watch?v=cbP2N1BQdYc
 * ```
 *

///

### Créer le code **FastAPI** { #create-the-fastapi-code }

* Créez un répertoire `app` et entrez dedans.
* Créez un fichier vide `__init__.py`.
* Créez un fichier `main.py` avec :

```Python
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
def read_root():
    return {"Hello": "World"}

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vi
vi.it
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vibo-valentia.it
vibovalentia.it
vic.au
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video
video.hu
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vikna.no
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// https://www.iana.org/domains/root/db/vet.html
vet

// viajes : Binky Moon, LLC
// https://www.iana.org/domains/root/db/viajes.html
viajes

// video : Dog Beach, LLC
// https://www.iana.org/domains/root/db/video.html
video

// vig : VIENNA INSURANCE GROUP AG Wiener Versicherung Gruppe
// https://www.iana.org/domains/root/db/vig.html
vig

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