return x * 42


ml_models = {}


@asynccontextmanager
async def lifespan(app: FastAPI):
    # Load the ML model
    ml_models["answer_to_everything"] = fake_answer_to_everything_ml_model
    yield
    # Clean up the ML models and release the resources
    ml_models.clear()


app = FastAPI(lifespan=lifespan)


@app.get("/predict")
async def predict(x: float):

/**
 * The search form for Group.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The ID field for searching groups.
     */
    public String id;

/**
 * The search form for Scheduler.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The ID field for searching scheduled jobs.
     */
    public String id;

    }
    val result = plans[nextPlanIndex++]
    events += "take plan ${result.id}"

    if (result.yieldBeforePlanReturns) {
      taskFaker.yield()
    }

    val planningThrowable = result.planningThrowable
    if (planningThrowable != null) throw planningThrowable

    return result
  }

## Поля-списки { #list-fields }

Вы можете определить атрибут как подтип. Например, Python-тип `list`:

{* ../../docs_src/body_nested_models/tutorial001_py310.py hl[12] *}

Это приведёт к тому, что `tags` будет списком, несмотря на то, что тип его элементов не объявлен.

## Поля-списки с параметром типа { #list-fields-with-type-parameter }

/**
 * The search form for Stopwords.
 */
public class SearchForm {

    /**
     * Default constructor for SearchForm.
     */
    public SearchForm() {
    }

    /**
     * The dictionary ID field for stopwords dictionary operations.
     */
    @Required
    public String dictId;

        response.dataCompactionMode = 1;
        response.dataLength = 1024;
        response.dataOffset = 54;

        String result = response.toString();

        // Verify that toString includes the key fields
        assertNotNull(result);
        assertTrue(result.contains("SmbComReadAndXResponse"));
        assertTrue(result.contains("dataCompactionMode=1"));
        assertTrue(result.contains("dataLength=1024"));

     */
    public ReqHeaderPager() {
        // Default constructor - initialization handled by field defaults and clear() method
    }

    /**
     * Clears all pager data and resets to default values.
     * This method resets pagination state and clears all request header fields.
     */
    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;

	TCPOptions    TCPOptions    // all the configurable TCP conn specific configurable options.
	listenerMutex sync.Mutex    // to guard 'listener' field.
	listener      *httpListener // HTTP listener for all 'Addrs' field.
	inShutdown    uint32        // indicates whether the server is in shutdown or not
	requestCount  int32         // counter holds no. of request in progress.
}

    "portal-gun": {"description": "Gun to create portals", "owner": "Rick"},
}


class OwnerError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except OwnerError as e:
        raise HTTPException(status_code=400, detail=f"Owner error: {e}")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: Annotated[str, Depends(get_username)]):