```Python hl_lines="1"
async def get_burgers(number: int):
    # Сделать что-то асинхронное, чтобы приготовить бургеры
    return burgers
```

...вместо `def`:

```Python hl_lines="2"
# Это не асинхронный код
def get_sequential_burgers(number: int):
    # Сделать что-то последовательное, чтобы приготовить бургеры

    model_config = {"extra": "allow"}


@app.get("/query")
async def query_model_with_extra(data: Model = Query()):
    return data


@app.get("/header")
async def header_model_with_extra(data: Model = Header()):
    return data


@app.get("/cookie")
async def cookies_model_with_extra(data: Model = Cookie()):
    return data


def test_query_pass_extra_list():
    client = TestClient(app)

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():
    response = client.get("/query")

    response_model=ResponseModel,
)
async def response_model_has_default_factory_return_dict():
    return {"code": 200}


@app.get(
    "/response_model_has_default_factory_return_model",
    response_model=ResponseModel,
)
async def response_model_has_default_factory_return_model():
    return ResponseModel()


client = TestClient(app)


def test_response_model_has_default_factory_return_dict():

    response_model_include={"baz": ..., "ref": {"foo"}},
)
def simple_include():
    return Model2(
        ref=Model1(foo="simple_include model foo", bar="simple_include model bar"),
        baz="simple_include model2 baz",
    )


@app.get(
    "/simple_include_dict",
    response_model=Model2,
    response_model_include={"baz": ..., "ref": {"foo"}},
)
def simple_include_dict():
    return {
        "ref": {

        .Builder()
        .body("ABC")
        .clearHeaders()
        .addHeader("Content-Length: 4")
        .build(),
    )
    server.enqueue(
      MockResponse
        .Builder()
        .body("DEF")
        .build(),
    )
    val urlConnection = server.url("/").toUrl().openConnection()
    urlConnection!!.readTimeout = 1000
    val inputStream = urlConnection.getInputStream()

```Python hl_lines="2"
@app.get('/')
def results():
    results = some_library()
    return results
```

---

Si tu aplicación (de alguna manera) no tiene que comunicarse con nada más y esperar a que responda, usa `async def`, incluso si no necesitas usar `await` dentro.

---

Si simplemente no lo sabes, usa `def` normal.

---

            },
        }
    )


def test_warn_duplicate_operation_id():
    def broken_operation_id(route: APIRoute):
        return "foo"

    app = FastAPI(generate_unique_id_function=broken_operation_id)

    @app.post("/")
    def post_root(item1: Item):
        return item1  # pragma: nocover

    @app.post("/second")
    def post_second(item1: Item):

app = FastAPI()


@app.get("/int/{param:int}")
def int_convertor(param: int = Path()):
    return {"int": param}


@app.get("/float/{param:float}")
def float_convertor(param: float = Path()):
    return {"float": param}


@app.get("/path/{param:path}")
def path_convertor(param: str = Path()):
    return {"path": param}


@app.get("/query/")
def query_convertor(param: str = Query()):

```Python hl_lines="1"
async def get_burgers(number: int):
    # Faz alguma coisa assíncrona para criar os hambúrgueres
    return burgers
```

...ao invés de `def`:

```Python hl_lines="2"
# Isso não é assíncrono
def get_sequential_burgers(number: int):
    # Faz alguma coisa sequencial para criar os hambúrgueres