{* ../../docs_src/custom_response/tutorial006c_py39.py hl[2,7,9] *}

### `StreamingResponse` { #streamingresponse }

Toma un generador `async` o un generador/iterador normal y transmite el cuerpo del response.

{* ../../docs_src/custom_response/tutorial007_py39.py hl[2,14] *}

Код, следующий за оператором `yield`, выполняется после ответа:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[5:6] *}

/// tip | Подсказка

Можно использовать как `async`, так и обычные функции.

**FastAPI** корректно обработает каждый вариант, так же как и с обычными зависимостями.

///

## Зависимость с `yield` и `try` { #a-dependency-with-yield-and-try }

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"errors"
	"fmt"
	"io"
	"math/rand"
	"path"
	"runtime"
	"strconv"
	"strings"
	"sync"
	"sync/atomic"
	"time"

	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/cachevalue"
	"github.com/minio/minio/internal/grid"
	xioutil "github.com/minio/minio/internal/ioutil"

            assertEquals('a', stream.read());
            assertEquals(-1, stream.read()); // EOF
        }

        // File should be deleted after close
        // Note: FileUtil.deleteInBackground() is async, so we can't reliably test this
    }

    public void test_available() throws Exception {
        // Create a temporary file with test data
        File tempFile = File.createTempFile("test-", ".tmp");

//
//	func TestSomething(t *testing.T) {
//		defer testlogger.T.SetLogTB(t)()
//
// This cannot be used for parallel tests.
package testlogger

import (
	"context"
	"fmt"
	"os"
	"strings"
	"sync/atomic"
	"testing"

	"github.com/minio/madmin-go/v3/logger/log"
	"github.com/minio/minio/internal/logger"
	types "github.com/minio/minio/internal/logger/target/loggertypes"
)

const (
	logMessage = iota

El código posterior a la declaración `yield` se ejecuta después del response:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[5:6] *}

/// tip | Consejo

Puedes usar funciones `async` o regulares.

**FastAPI** hará lo correcto con cada una, igual que con dependencias normales.

///

## Una dependencia con `yield` y `try` { #a-dependency-with-yield-and-try }

* full stack: full stack (do not translate to "pila completa")
* full-stack: full-stack (do not translate to "de pila completa")
* stack: stack (do not translate to "pila")
* loop (as in async loop): loop (do not translate to "bucle" or "ciclo")
* hard dependencies: dependencias obligatorias (do not translate to "dependencias duras")
* locking: locking (do not translate to "bloqueo")

import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
import java.time.Duration
import java.util.Optional

plugins {
    groovy
    idea // Need to apply the idea plugin, so the extended configuration is taken into account on sync
    id("gradlebuild.module-jar")
    id("gradlebuild.dependency-modules")
    id("gradlebuild.jvm-compile")
}

tasks.withType<JavaCompile>().configureEach {
    options.release = provider {

生成的值会注入到 *路由函数* 和其他依赖项中：

{* ../../docs_src/dependencies/tutorial007.py hl[4] *}

`yield` 语句后面的代码会在创建响应后，发送响应前执行：

{* ../../docs_src/dependencies/tutorial007.py hl[5:6] *}

/// tip | 提示

你可以使用 `async` 或普通函数。

**FastAPI** 会像处理普通依赖一样，对每个依赖做正确的处理。

///

## 包含 `yield` 和 `try` 的依赖项

如果在包含 `yield` 的依赖中使用 `try` 代码块，你会捕获到使用依赖时抛出的任何异常。

例如，如果某段代码在另一个依赖中或在 *路由函数* 中使数据库事务"回滚"或产生任何其他错误，你将会在依赖中捕获到异常。

Der auf die `yield`-Anweisung folgende Code wird nach der Response ausgeführt:

{* ../../docs_src/dependencies/tutorial007_py39.py hl[5:6] *}

/// tip | Tipp

Sie können `async`- oder reguläre Funktionen verwenden.

**FastAPI** wird bei jeder das Richtige tun, so wie auch bei normalen Abhängigkeiten.

///

## Eine Abhängigkeit mit `yield` und `try` { #a-dependency-with-yield-and-try }