## HTTPX { #httpx }

Incluso si tu aplicación de **FastAPI** usa funciones `def` normales en lugar de `async def`, sigue siendo una aplicación `async` por debajo.

    return data


def get_graphql_sponsor_edges(
    *, settings: Settings, after: str | None = None
) -> list[SponsorshipAsMaintainerEdge]:
    data = get_graphql_response(settings=settings, query=sponsors_query, after=after)
    graphql_response = SponsorsResponse.model_validate(data)
    return graphql_response.data.user.sponsorshipsAsMaintainer.edges


def get_individual_sponsors(
    settings: Settings,

///

## Documents OpenAPI et API { #openapi-and-api-docs }

)

app = FastAPI()


async def set_up_request_state_dependency():
    request_state = {"user": "deadpond"}
    contextvar_token = legacy_request_state_context_var.set(request_state)
    yield request_state
    legacy_request_state_context_var.reset(contextvar_token)


@app.middleware("http")
async def custom_middleware(

Voyons comment cela fonctionne et comment le modifier si vous devez le faire.

## Utiliser des modèles Pydantic pour l'entrée et la sortie { #pydantic-models-for-input-and-output }

Supposons que vous ayez un modèle Pydantic avec des valeurs par défaut, comme celui‑ci :

class RateLimiter:
    def __init__(self) -> None:
        self.last_query_cost: int = 1
        self.remaining_points: int = 5000
        self.reset_at: datetime = datetime.fromtimestamp(0, timezone.utc)
        self.last_request_start_time: datetime = datetime.fromtimestamp(0, timezone.utc)
        self.speed_multiplier: float = 1.0

    def __enter__(self) -> "RateLimiter":

            "title": "Description",
            "type": ["string", "null"],
        },
    },
}


def test_custom_response_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text
    assert response.json()["components"]["schemas"]["Item"] == item_schema


def test_response():
    # For coverage
    response = client.get("/foo")

        },
        {"url": "https://prod.example.com"},
    ]
)


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


client = TestClient(app)


def test_app():
    response = client.get("/foo")
    assert response.status_code == 200, response.text


def test_openapi_schema():
    response = client.get("/openapi.json")
    assert response.status_code == 200, response.text

OpenAPI 3.1.0 (verwendet seit FastAPI 0.99.0) hat Unterstützung für `examples` hinzugefügt, was Teil des **JSON Schema** Standards ist.

from fastapi import FastAPI

app = FastAPI()


@app.get("/items/", tags=["items"])
async def read_items():
    return [{"name": "Foo", "price": 42}]


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


@app.get("/elements/", tags=["items"], deprecated=True)
async def read_elements():