`Optional[Something]` ist tatsächlich eine Abkürzung für `Union[Something, None]`, diese beiden sind äquivalent.

Das bedeutet auch, dass Sie in Python 3.10 `Something | None` verwenden können:

//// tab | Python 3.10+

```Python hl_lines="1"

    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages

    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages

    [
        ("/items", None, 200, {"ads_id": None}),
        ("/items", {"ads_id": "ads_track"}, 200, {"ads_id": "ads_track"}),
        (
            "/items",
            {"ads_id": "ads_track", "session": "cookiesession"},
            200,
            {"ads_id": "ads_track"},
        ),
        ("/items", {"session": "cookiesession"}, 200, {"ads_id": None}),
    ],
)

:"false"===a&&(i.hide(),i.parent().parent().addClass("d-none"))}))},t.toggleRow=function(){var e=this._element;"TR"!==e[0].nodeName&&"TR"!==(e=e.parent())[0].nodeName&&(e=e.parent());var t=e.attr(ee),a=e.next(Y).children().first().children();a.stop(),"true"===t?(a.slideUp(500,(function(){e.next(Y).addClass("d-none")})),e.attr(ee,"false"),e.trigger(n.default.Event("collapsed.lte.expandableTable"))):"false"===t&&(e.next(Y).removeClass("d-none"),a.slideDown(500),e.attr(ee,"true"),e.trigger(n.defaul...

	for !errState {
		select {
		case <-m.ctx.Done():
			if debugPrint {
				fmt.Println("Client sending disconnect to mux", m.MuxID)
			}
			m.addErrorNonBlockingClose(errResp, context.Cause(m.ctx))
			errState = true
			continue
		case <-pingTimer:
			if !m.doPing(errResp) {
				errState = true
				continue
			}
		case req, ok := <-requests:
			if !ok {
				// Done send EOF
				if debugPrint {

    [
        ("/items", None, 200, {"ads_id": None}),
        ("/items", {"ads_id": "ads_track"}, 200, {"ads_id": "ads_track"}),
        (
            "/items",
            {"ads_id": "ads_track", "session": "cookiesession"},
            200,
            {"ads_id": "ads_track"},
        ),
        ("/items", {"session": "cookiesession"}, 200, {"ads_id": None}),
    ],
)

    do {
      System.runFinalization();
      if (predicate.isDone()) {
        return;
      }
      CountDownLatch done = new CountDownLatch(1);
      createUnreachableLatchFinalizer(done);
      await(done);
      if (predicate.isDone()) {
        return;
      }
    } while (System.nanoTime() - deadline < 0);
    throw formatRuntimeException(

	if f.testWG != nil {
		defer f.testWG.Done()
	}
	args := f.Called(ambientPods)
	return args.Error(0)
}

// Custom "wait group with timeout" for waiting for fakeServer calls in a goroutine to finish
type WaitGroup struct {
	count int32
	done  chan struct{}
}

func NewWaitGroup() *WaitGroup {
	return &WaitGroup{
		done: make(chan struct{}),
	}
}

    for prod and one for tests. However, unlike our other packages, as of this
    writing it has test supersource but no prod supersource.

    GWT happens to use the prod .gwt.xml, so it looks for no supersource for
    tests, either. This causes it to fail to find AtomicLongMapTest.

    Our workaround is to tell GWT that util.concurrent and all other packages