## `yield` を使った `StreamingResponse` { #a-streamingresponse-with-yield }

path operation 関数で `response_class=StreamingResponse` を宣言すると、`yield` を使ってデータをチャンクごとに順次送信できます。

{* ../../docs_src/stream_data/tutorial001_py310.py ln[1:23] hl[20,23] *}

FastAPI は各データチャンクをそのまま `StreamingResponse` に渡し、JSON などに変換しようとはしません。

### 非 async な path operation 関数 { #non-async-path-operation-functions }

`async` なしの通常の `def` 関数でも同様に `yield` を使えます。

///

This parameter doesn't create that endpoint / *path operation*, but declares that the URL `/token` will be the one that the client should use to get the token. That information is used in OpenAPI, and then in the interactive API documentation systems.

We will soon also create the actual path operation.

/// info

### Üst seviye uygulama { #top-level-application }

Önce ana, üst seviye **FastAPI** uygulamasını ve onun *path operation*’larını oluşturun:

{* ../../docs_src/sub_applications/tutorial001_py310.py hl[3, 6:8] *}

### Alt uygulama { #sub-application }

Sonra alt uygulamanızı ve onun *path operation*’larını oluşturun.

Bu alt uygulama da standart bir FastAPI uygulamasıdır; ancak "mount" edilecek olan budur:

### Preferred translations / glossary

Use the following preferred translations when they apply in documentation prose:

- request (HTTP): запит
- response (HTTP): відповідь
- path operation: операція шляху
- path operation function: функція операції шляху
- prompt: підсказка
- check: перевірка
- Parallel Server Gateway Interface: Інтерфейс Шлюзу Паралельного Сервера
- Mozilla Developer Network: Мережа Розробників Mozilla

      AbstractContext* ctx,
      absl::Span<AbstractTensorHandle* const> grad_outputs,
      absl::Span<AbstractTensorHandle*> grad_inputs) = 0;
  virtual ~GradientFunction() {}
};

// Metadata from the forward operation that is made available to the
// gradient registerer to instantiate a GradientFunction.
struct ForwardOperation {
 public:
  string op_name;
  std::vector<AbstractTensorHandle*> inputs;

   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")
  public final void putAll(Map<? extends K, ? extends V> map) {
    throw new UnsupportedOperationException();
  }

  /**
   * Guaranteed to throw an exception and leave the map unmodified.
   *
   * @throws UnsupportedOperationException always
   * @deprecated Unsupported operation.
   */

        // Wait for reset timeout
        Thread.sleep(1100);

        // Execute successful operation - should transition to HALF_OPEN then potentially CLOSED
        String result = circuitBreaker.executeWithCircuitBreaker(() -> "success");
        assertEquals("success", result, "Operation should succeed");
        assertEquals(State.HALF_OPEN, circuitBreaker.getState(), "Circuit should be in HALF_OPEN");

    /**
     * Creates a new CreateForm instance.
     */
    public CreateForm() {
        // Default constructor
    }

    /**
     * The CRUD operation mode for this form.
     * Indicates whether this is a create, read, update, or delete operation.
     */
    @ValidateTypeFailure
    public Integer crudMode;

    /**
     * The name of the access token.

 */
public interface WinError {

    /*
     * Don't bother to edit this. Everything within the interface
     * block is automatically generated from the ntstatus package.
     */

    /** The operation completed successfully */
    int ERROR_SUCCESS = 0;
    /** Access is denied */
    int ERROR_ACCESS_DENIED = 5;
    /** No more connections can be made to this remote computer */
    int ERROR_REQ_NOT_ACCEP = 71;

 */
public interface WinError {

    /* Don't bother to edit this. Everthing within the interface
     * block is automatically generated from the ntstatus package.
     */

    /** The operation completed successfully */
    int ERROR_SUCCESS = 0;
    /** Access is denied */
    int ERROR_ACCESS_DENIED = 5;
    /** No more connections can be made to this remote computer */
    int ERROR_REQ_NOT_ACCEP = 71;