from fastapi.testclient import TestClient

app = FastAPI()


@app.get("/query")
def read_query(q: str | None):
    return q


@app.get("/explicit-query")
def read_explicit_query(q: str | None = Query()):
    return q


@app.post("/body-embed")
def send_body_embed(b: str | None = Body(embed=True)):
    return b


client = TestClient(app)


def test_required_nonable_query_invalid():

    assert response.json() == {
        "item_id": 5,
        "item": {
            "name": "Foo",
            "description": None,
            "price": 35.4,
            "tax": None,
            "tags": [],
            "image": None,
        },
    }


def test_put_empty_body(client: TestClient):
    response = client.put(
        "/items/5",
        json={},
    )

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Annotated[str | None, Query(min_length=3, max_length=50)] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(q: Annotated[str | None, Query(alias="item-query")] = None):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

from typing_extensions import deprecated

try:
    import ujson
except ImportError:  # pragma: nocover
    ujson = None  # type: ignore


try:
    import orjson
except ImportError:  # pragma: nocover
    orjson = None  # type: ignore


@deprecated(
    "UJSONResponse is deprecated, FastAPI now serializes data directly to JSON "

from typing import Annotated

from fastapi import FastAPI, Query

app = FastAPI()


@app.get("/items/")
async def read_items(
    q: Annotated[
        str | None, Query(min_length=3, max_length=50, pattern="^fixedquery$")
    ] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

    "bar": {"id": "bar", "title": "Bar", "description": "The bartenders"},
}

app = FastAPI()


class Item(BaseModel):
    id: str
    title: str
    description: str | None = None


@app.get("/items/{item_id}", response_model=Item)
async def read_main(item_id: str, x_token: str = Header()):
    if x_token != fake_secret_token:

  fun enqueuedJobsRunImmediately() {
    client.newCall(newRequest("http://a/1")).enqueue(callback)
    executor.assertJobs("http://a/1")

    assertThat(eventRecorder.eventSequence).none { it.isInstanceOf<DispatcherQueueStart>() }
    assertThat(eventRecorder.eventSequence).none { it.isInstanceOf<DispatcherQueueEnd>() }
  }

  @Test
  fun maxRequestsEnforced() {
    dispatcher.maxRequests = 3

    function showErrorBanner(message) {
        elements.errorBanner.find('.error-message').text(message);
        elements.errorBanner.removeClass('d-none');
    }

    /**
     * Hide error banner
     */
    function hideErrorBanner() {
        elements.errorBanner.addClass('d-none');
    }

    /**
     * Update phase indicator
     */
    function updatePhase(phase, status) {

Votre modèle de réponse peut avoir des valeurs par défaut, par exemple :

{* ../../docs_src/response_model/tutorial004_py310.py hl[9,11:12] *}

* `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 : `[]`.