### `response_model` Priority

If you declare both a return type and a `response_model`, the `response_model` will take priority and be used by FastAPI.

					continue
				}
				err = resp.Err
			}
			t.Log("Client Context canceled. err state:", err)
			clientCanceled <- time.Now()
		}(t)
		start := time.Now()
		cancel()
		<-serverCanceled
		t.Log("server cancel time:", time.Since(start))
		clientEnd := <-clientCanceled
		if !errors.Is(err, context.Canceled) {
			t.Error("expected context.Canceled, got", err)
		}

    {!> ../../../docs_src/response_model/tutorial001_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="17  22  24-27"
    {!> ../../../docs_src/response_model/tutorial001.py!}
    ```

!!! note "Hinweis"
    Beachten Sie, dass `response_model` ein Parameter der „Dekorator“-Methode ist (`get`, `post`, usw.). Nicht der *Pfadoperation-Funktion*, so wie die anderen Parameter.

func (c *Connection) monitorState(conn net.Conn, cancel context.CancelCauseFunc) {
	c.connChange.L.Lock()
	defer c.connChange.L.Unlock()
	for {
		newState := c.State()
		if newState != StateConnected {
			conn.Close()
			cancel(ErrDisconnected)
			return
		}
		// Unlock and wait for state change.
		c.connChange.Wait()
	}
}

// handleMessages will handle incoming messages on conn.

		for par := 1; par <= 32; par *= 2 {
			b.Run("par="+strconv.Itoa(par*runtime.GOMAXPROCS(0)), func(b *testing.B) {
				defer timeout(60 * time.Second)()
				ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
				defer cancel()
				b.ReportAllocs()
				b.SetBytes(int64(len(payload) * 2))
				b.ResetTimer()
				t := time.Now()
				var ops int64
				var lat int64
				b.SetParallelism(par)

### Приоритет `response_model`

Если одновременно указать аннотацию типа для ответа функции и параметр `response_model` - последний будет иметь больший приоритет и FastAPI будет использовать именно его.

     * that could call it, nor exposed this Future for users to call cancel() on).
     */
    requireNonNull(futures);

    // Corner case: List is empty.
    if (futures.isEmpty()) {
      handleAllCompleted();
      return;
    }

    // NOTE: If we ever want to use a custom executor here, have a look at CombinedFuture as we'll
    // need to handle RejectedExecutionException

    if (allMustSucceed) {

    👉 ✔ `response_model_by_alias` 👈 👷 ➡.

=== "🐍 3️⃣.6️⃣ & 🔛"

    ```Python hl_lines="31  37"
    {!> ../../../docs_src/response_model/tutorial005.py!}
    ```

=== "🐍 3️⃣.1️⃣0️⃣ & 🔛"

    ```Python hl_lines="29  35"
    {!> ../../../docs_src/response_model/tutorial005_py310.py!}
    ```

!!! tip

    inFinished: Boolean,
  ) {
    pushQueue.execute("$connectionName[$streamId] onHeaders") {
      val cancel = pushObserver.onHeaders(streamId, requestHeaders, inFinished)
      ignoreIoExceptions {
        if (cancel) writer.rstStream(streamId, ErrorCode.CANCEL)
        if (cancel || inFinished) {
          this.withLock {
            currentPushRequests.remove(streamId)
          }
        }
      }

        Proxy.Type.DIRECT, Proxy.Type.HTTP -> route.address.socketFactory.createSocket()!!
        else -> Socket(route.proxy)
      }
    this.rawSocket = rawSocket

    // Handle the race where cancel() precedes connectSocket(). We don't want to miss a cancel.
    if (canceled) {
      throw IOException("canceled")
    }

    rawSocket.soTimeout = socketReadTimeoutMillis
    try {