app = FastAPI()
    router = APIRouter()


    @router.get("/users/", tags=["users"])
    async def read_users():
        return [{"username": "Rick"}, {"username": "Morty"}]


    app.include_router(router)
    ```
    """

    def __init__(
        self,
        *,
        prefix: Annotated[str, Doc("An optional path prefix for the router.")] = "",

Por ejemplo, esto no está permitido:

```Python
q: Annotated[str, Query(default="rick")] = "morty"
```

...porque no está claro si el valor por defecto debería ser `"rick"` o `"morty"`.

Así que utilizarías (preferentemente):

```Python
q: Annotated[str, Query()] = "rick"
```

...o en code bases más antiguas encontrarás:

Par exemple, ceci n’est pas autorisé :

```Python
q: Annotated[str, Query(default="rick")] = "morty"
```

... parce qu’il n’est pas clair si la valeur par défaut doit être « rick » ou « morty ».

Donc, vous utiliseriez (de préférence) :

```Python
q: Annotated[str, Query()] = "rick"
```

def test_users_token_jessica(client: TestClient):
    response = client.get("/users?token=jessica")
    assert response.status_code == 200
    assert response.json() == [{"username": "Rick"}, {"username": "Morty"}]


def test_users_with_no_token(client: TestClient):
    response = client.get("/users")
    assert response.status_code == 422
    assert response.json() == {
        "detail": [
            {

```Python
from fastapi import Depends, FastAPI, HTTPException
from typing_extensions import Annotated

app = FastAPI()


data = {
    "plumbus": {"description": "Freshly pickled plumbus", "owner": "Morty"},
    "portal-gun": {"description": "Gun to create portals", "owner": "Rick"},
}


class OwnerError(Exception):
    pass


def get_username():
    try:
        yield "Rick"

/// note | Détails techniques

L'image Docker a été créée à une époque où Uvicorn ne supportait pas la gestion et le redémarrage des workers morts, il fallait donc utiliser Gunicorn avec Uvicorn, ce qui ajoutait pas mal de complexité, uniquement pour que Gunicorn gère et redémarre les processus worker Uvicorn.

* Qualquer programa, qualquer código, **só pode fazer coisas** quando está sendo **executado**. Então, quando há um **processo em execução**.
* O processo pode ser **terminado** (ou "morto") por você, ou pelo sistema operacional. Nesse ponto, ele para de rodar/ser executado, e ele **não pode mais fazer coisas**.

32B6          ; mapped                 ; 0034 0031     # 3.2  CIRCLED NUMBER FORTY ONE
32B7          ; mapped                 ; 0034 0032     # 3.2  CIRCLED NUMBER FORTY TWO
32B8          ; mapped                 ; 0034 0033     # 3.2  CIRCLED NUMBER FORTY THREE
32B9          ; mapped                 ; 0034 0034     # 3.2  CIRCLED NUMBER FORTY FOUR

thought to herself.

  At this moment the King, who had been for some time busily
writing in his note-book, cackled out `Silence!' and read out
from his book, `Rule Forty-two.  ALL PERSONS MORE THAN A MILE
HIGH TO LEAVE THE COURT.'

  Everybody looked at Alice.

  `I'M not a mile high,' said Alice.

  `You are,' said the King.

thought to herself.

  At this moment the King, who had been for some time busily
writing in his note-book, cackled out `Silence!' and read out
from his book, `Rule Forty-two.  ALL PERSONS MORE THAN A MILE
HIGH TO LEAVE THE COURT.'

  Everybody looked at Alice.

  `I'M not a mile high,' said Alice.

  `You are,' said the King.