*/
  void awaitRunning();

  /**
   * Waits for the {@link Service} to reach the {@linkplain State#RUNNING running state} for no more
   * than the given time.
   *
   * @param timeout the maximum time to wait
   * @param unit the time unit of the timeout argument
   * @throws TimeoutException if the service has not reached the given state within the deadline

with open("file.txt") as file:
    file.read()
```

In neueren Versionen von Python gibt es auch einen **asynchronen Kontextmanager**. Sie würden ihn mit `async with` verwenden:

```Python
async with lifespan(app):
    await do_stuff()
```

MC_CONFIG_DIR="{{ .Values.configPathmc }}"
MC="/usr/bin/mc --insecure --config-dir ${MC_CONFIG_DIR}"
{{- else }}
MC="/usr/bin/mc --insecure"
{{- end }}

# connectToMinio
# Use a check-sleep-check loop to wait for MinIO service to be available
connectToMinio() {
	SCHEME=$1
	ATTEMPTS=0
	LIMIT=29 # Allow 30 attempts
	set -e   # fail if we can't read the keys.
	ACCESS=$(cat /config/rootUser)
	SECRET=$(cat /config/rootPassword)

			PodIP: fakePodIP,
		},
	}
	ns := &corev1.Namespace{ObjectMeta: metav1.ObjectMeta{Name: "funkyns"}}

	client := kube.NewFakeClient(ns, pod)

	// We are expecting at most 1 calls to the mock, wait for them
	wg, waitForMockCalls := NewWaitForNCalls(t, 1)
	fs := &fakeServer{testWG: wg}

	fs.On("AddPodToMesh",
		ctx,
		mock.IsType(pod),
		util.GetPodIPsIfPresent(pod),
		valid.Netns,
	).Return(nil)

	// However, if they do get in a state where they call us in a loop, we will quickly OOM
	limit := rate.NewLimiter(rate.Limit(5), 1)
	for {
		log.Debug("accepting conn")
		if err := limit.Wait(ctx); err != nil {
			log.Errorf("failed to wait for ztunnel connection: %v", err)
			return
		}
		conn, err := z.accept()
		if err != nil {
			if errors.Is(err, net.ErrClosed) {
				log.Debug("listener closed - returning")

                    synchronized ( w ) {
                        w.checkException();
                        while ( !w.isReady() ) {
                            try {
                                w.wait();
                            }
                            catch ( InterruptedException ie ) {
                                throw new SmbException(dest.getURL().toString(), ie);
                            }

8. 注意，*路径操作函数*使用的是普通函数，不是异步函数；

    与往常一样，在 FastAPI 中，可以按需组合普通函数与异步函数；

    如果不清楚何时使用异步函数或普通函数，请参阅**急不可待？**一节中对 <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank" class="internal-link">`async` 与 `await`</a> 的说明；

9. *路径操作函数*返回的不是数据类（虽然它可以返回数据类），而是返回内含数据的字典列表；

    FastAPI 使用（包含数据类的） `response_model` 参数转换响应。

把 `dataclasses` 与其它类型注解组合在一起，可以组成不同形式的复杂数据结构。

更多内容详见上述代码内的注释。

## 深入学习

	watcher *fsnotify.Watcher
	Events  chan struct{}
	Errors  chan error
}

// Waits until a file is modified (returns nil), the context is cancelled (returns context error), or returns error
func (w *Watcher) Wait(ctx context.Context) error {
	select {
	case <-w.Events:
		return nil
	case err := <-w.Errors:
		return err
	case <-ctx.Done():
		return ctx.Err()
	}
}

func (w *Watcher) Close() {

    🕧, FastAPI 👆 💪 🌀 `def` & `async def` 💪.

    🚥 👆 💪 ↗️ 🔃 🕐❔ ⚙️ ❔, ✅ 👅 📄 _"🏃 ❓" _ 🩺 🔃 <a href="https://fastapi.tiangolo.com/async/#in-a-hurry" target="_blank" class="internal-link">`async` &amp; `await`</a>.

9️⃣. 👉 *➡ 🛠️ 🔢* 🚫 🛬 🎻 (👐 ⚫️ 💪), ✋️ 📇 📖 ⏮️ 🔗 💽.

    FastAPI 🔜 ⚙️ `response_model` 🔢 (👈 🔌 🎻) 🗜 📨.

👆 💪 🌀 `dataclasses` ⏮️ 🎏 🆎 ✍ 📚 🎏 🌀 📨 🏗 📊 📊.

✅-📟 ✍ 💁‍♂ 🔛 👀 🌅 🎯 ℹ.

message LeaseSpec {
  // holderIdentity contains the identity of the holder of a current lease.
  // +optional
  optional string holderIdentity = 1;

  // leaseDurationSeconds is a duration that candidates for a lease need
  // to wait to force acquire it. This is measure against time of last
  // observed renewTime.
  // +optional
  optional int32 leaseDurationSeconds = 2;

  // acquireTime is a time when the current lease was acquired.
  // +optional