Et il est possible que pour votre cas d'utilisation, la solution se trouve dans l'un d'entre eux.

## Lisez d'abord le didacticiel

Vous pouvez utiliser la plupart des fonctionnalités de **FastAPI** grâce aux connaissances du [Tutoriel - Guide de l'utilisateur](../tutorial/index.md){.internal-link target=_blank}.

Et les sections suivantes supposent que vous l'avez lu et que vous en connaissez les idées principales.

const (
	errEndpointStopped = "endpoint %v has been stopped"
)

// endpointStopGracePeriod indicates the grace period after an endpoint is stopped
// because its device plugin fails. DeviceManager keeps the stopped endpoint in its
// cache during this grace period to cover the time gap for the capacity change to
// take effect.
const endpointStopGracePeriod = time.Duration(5) * time.Minute

  func.return
  // CHECK-LABEL: func @init_all_tables
  // CHECK-DAG: [[CST:%.*]]  = arith.constant dense<["apple", "banana", "grape"]> : tensor<3x!tf_type.string>
  // CHECK-DAG: [[CST_0:%.*]]  = arith.constant dense<[0, 1, 2]> : tensor<3xi64>
  // CHECK: [[VAL:%.*]] = "tf.HashTableV2"()
  // CHECK: "tf.LookupTableImportV2"([[VAL]], [[CST]], [[CST_0]])
}

				},
			},
		},
	}
	to := newTerminationOrdering(pod, getContainerNames(pod))

	var wg sync.WaitGroup
	var delays sync.Map

	waitAndExit := func(name string) {
		// just a two second grace period which is not long enough for all of the waits to finish
		delay := int64(to.waitForTurn(name, 2))
		delays.Store(name, delay)
		time.Sleep(1 * time.Second)
		to.containerTerminated(name)
		wg.Done()
	}

  func.return
  // CHECK-LABEL: func @init_all_tables
  // CHECK-DAG: [[CST:%.*]]  = arith.constant dense<["apple", "banana", "grape"]> : tensor<3x!tf_type.string>
  // CHECK-DAG: [[CST_0:%.*]]  = arith.constant dense<[0, 1, 2]> : tensor<3xi64>
  // CHECK: [[VAL:%.*]] = "tf.HashTableV2"()
  // CHECK: "tf.LookupTableImportV2"([[VAL]], [[CST]], [[CST_0]])
}

                <td><literal>false</literal></td>
            </tr>
            <tr>
                <td>disabledGlobalASTTransformations</td>
                <td><literal>["groovy.grape.GrabAnnotationTransformation"]</literal></td>
            </tr>
        </table>
    </section>
    <section>
        <title>Methods</title>
        <table>
            <thead>
                <tr>

	// Value must be non-negative integer. The value zero indicates delete immediately.
	// If this value is nil, the default grace period will be used instead.
	// The grace period is the duration in seconds after the processes running in the carp are sent
	// a termination signal and the time when the processes are forcibly halted with a kill signal.

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{!../../../docs_src/background_tasks/tutorial001.py!}
```

## Ajouter une tâche d'arrière-plan

Dans votre *fonction de chemin*, passez votre fonction de tâche à l'objet de type `BackgroundTasks` (`background_tasks` ici) grâce à la méthode `.add_task()` :


```Python hl_lines="14"
{!../../../docs_src/background_tasks/tutorial001.py!}
```

`.add_task()` reçoit comme arguments :

  We have come to dedicate a portion of that field, as a final
resting place for those who here gave their lives that that
nation might live.  It is altogether fitting and proper that
we should do this.
  But, in a larger sense, we can not dedicate - we can not
consecrate - we can not hallow - this ground.
  The brave men, living and dead, who struggled here, have
consecrated it, far above our poor power to add or detract.