## Dependency Injection { #dependency-injection }

Die Verwendung von `BackgroundTasks` funktioniert auch mit dem <abbr title="Einbringen von Abhängigkeiten">Dependency Injection</abbr> System. Sie können einen Parameter vom Typ `BackgroundTasks` auf mehreren Ebenen deklarieren: in einer *Pfadoperation-Funktion*, in einer Abhängigkeit (Dependable), in einer Unterabhängigkeit usw.

def test_get_no_item(mod: ModuleType):
    client = TestClient(mod.app)
    response = client.get("/items/foo")
    assert response.status_code == 404, response.text
    assert response.json() == {"detail": "Item not found, there's only a plumbus here"}


def test_get(mod: ModuleType):
    client = TestClient(mod.app)
    response = client.get("/items/plumbus")
    assert response.status_code == 200, response.text

    takeIndex = inc(takeIndex);
    --count;
    return x;
  }

  /**
   * Utility for remove and iterator.remove: Delete item at position i. Call only when occupying
   * monitor.
   */
  void removeAt(int i) {
    E[] items = this.items;
    // if removing front item, just advance
    if (i == takeIndex) {
      items[takeIndex] = null;
      takeIndex = inc(takeIndex);
    } else {

                        <ol class="breadcrumb float-sm-right">
                            <li class="breadcrumb-item"><la:link href="/admin/crawlinginfo">
                                <la:message key="labels.joblog_link_list"/>
                            </la:link></li>
                            <li class="breadcrumb-item active"><la:message
                                    key="labels.joblog_link_details"/></li>
                        </ol>

     * Returns the last ExecutionPlanItem in the supplied phase. If no items are in the specified phase,
     * the closest executionPlanItem from an earlier phase item will be returned.
     *
     * @param requestedPhase the requested phase
     *                       The execution plan item
     * @return The ExecutionPlanItem or null if none can be found
     */
    public ExecutionPlanItem findLastInPhase(String requestedPhase) {

出于方便，**FastAPI** 会提供与 `starlette.responses` 相同的 `fastapi.responses` 给开发者。但是大多数可用的响应都直接来自 Starlette。

///

## 返回自定义 `Response`

上面的例子展示了需要的所有部分，但还不够实用，因为你本可以只是直接返回 `item`，而**FastAPI** 默认帮你把这个 `item` 放到 `JSONResponse` 中，又默认将其转换成了 `dict`等等。

现在，让我们看看你如何才能返回一个自定义的响应。

假设你想要返回一个 <a href="https://en.wikipedia.org/wiki/XML" class="external-link" target="_blank">XML</a> 响应。

        raise InternalError(
            f"The portal gun is too dangerous to be owned by {username}"
        )
    if item_id != "plumbus":
        raise HTTPException(
            status_code=404, detail="Item not found, there's only a plumbus here"
        )

## Changelog since v1.4.3

### Other notable changes

* Update the GCI image to gci-dev-55-8872-18-0 ([#35243](https://github.com/kubernetes/kubernetes/pull/35243), [@maisem](https://github.com/maisem))
* Change merge key for VolumeMount to mountPath ([#35071](https://github.com/kubernetes/kubernetes/pull/35071), [@thockin](https://github.com/thockin))

	"github.com/minio/minio/internal/logger"
)

// This file contains peer related notifications. For sending notifications to
// external systems, see event-notification.go

// NotificationSys - notification system.
type NotificationSys struct {
	peerClients    []*peerRESTClient // Excludes self
	allPeerClients []*peerRESTClient // Includes nil client for self
}

// NotificationPeerErr returns error associated for a remote peer.

Wie in `item.model_dump(exclude_unset=True)`.

Das wird ein <abbr title="Dictionary – Zuordnungstabelle: In anderen Sprachen auch Hash, Map, Objekt, Assoziatives Array genannt">`dict`</abbr> erstellen, mit nur den Daten, die gesetzt wurden, als das `item`-Modell erstellt wurde, Defaultwerte ausgeschlossen.