WAY","Route":"01521","Agency":1,"ViolationCode":"4000A1","ViolationDescr":"NO EVIDENCE OF REG","Fine":50,"Latitude":99999,"Longitude":99999} {"Ticket":1103700150,"IssueData":"2015-12-21T00:00:00","IssueTime":"1435","RPState":"CA","PlateExpiry":"201512","Make":"GMC","BodyStyle":"VN","Color":"WH","Location":"525 S MAIN ST","Route":"1C51","Agency":1,"ViolationCode":"4000A1","ViolationDescr":"NO EVIDENCE OF REG","Fine":50,"Latitude":99999,"Longitude":99999} {"Ticket":1104803000,"IssueData":"2015-12-21T00:00:00"...

                "name": "extra_param_2",
                "in": "query",
            },
        ]
    },
)
def route_with_extra_query_parameters(standard_query_param: Optional[int] = 50):
    return {}


client = TestClient(app)


def test_get_route():
    response = client.get("/")
    assert response.status_code == 200, response.text
    assert response.json() == {}

        .isEqualTo(-1);

    for (double value : NUMBERS) {
      assertWithMessage("%s", value)
          .that(Doubles.indexOf(new double[] {5.0, value, value, 5.0}, new double[] {value, value}))
          .isEqualTo(1);
    }
    assertThat(Doubles.indexOf(new double[] {5.0, NaN, NaN, 5.0}, new double[] {NaN, NaN}))
        .isEqualTo(-1);
  }

  public void testLastIndexOf() {

{* ../../docs_src/query_params_str_validations/tutorial002_an_py310.py hl[9] *}

Обратите внимание, что значение по умолчанию по‑прежнему `None`, то есть параметр остаётся необязательным.

Но теперь, добавив `Query(max_length=50)` внутрь `Annotated`, мы говорим FastAPI, что этому значению нужна **дополнительная валидация** — максимум 50 символов. 😎

/// tip | Совет

	// Multiple HTTP request handlers updating stats concurrently,
	// while background processes are reading the stats for persistence.
	const numWriters = 100 // Simulate many HTTP request handlers.
	const numReaders = 50  // Simulate background stats readers.
	const opsPerGoroutine = 100

	var wg sync.WaitGroup
	for i := range numWriters {
		wg.Add(1)
		go func(writerID int) {
			defer wg.Done()

	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)
	dm.Unlock(t.Context())

	dm.Lock(id, source)
	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)
	dm.Unlock(t.Context())

	dm.Lock(id, source)
	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)
	dm.Unlock(t.Context())

	dm.Lock(id, source)
	time.Sleep(time.Duration(10+(rand.Float32()*50)) * time.Millisecond)
	dm.Unlock(t.Context())

{* ../../docs_src/query_params_str_validations/tutorial002_an_py310.py hl[9] *}

Beachten Sie, dass der Defaultwert weiterhin `None` ist, so dass der Parameter weiterhin optional ist.

Aber jetzt, mit `Query(max_length=50)` innerhalb von `Annotated`, sagen wir FastAPI, dass wir eine **zusätzliche Validierung** für diesen Wert wünschen, wir wollen, dass er maximal 50 Zeichen hat. 😎

/// tip | Tipp

{* ../../docs_src/query_params_str_validations/tutorial002_an_py310.py hl[9] *}

Perceba que o valor padrão continua sendo `None`, então o parâmetro ainda é opcional.

Mas agora, com `Query(max_length=50)` dentro de `Annotated`, estamos dizendo ao FastAPI que queremos **validação adicional** para este valor, queremos que tenha no máximo 50 caracteres. 😎

/// tip | Dica

from pydantic_settings import BaseSettings


class Settings(BaseSettings):
    app_name: str = "Awesome API"
    admin_email: str
    items_per_user: int = 50

<div class="user-list user-list-center">

{% for user in people.experts[:50] %}

{% if user.login not in skip_users %}