<!--
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

以如下方式调用：

```Python
print(user_dict)
```

输出的就是 Python **字典**：

```Python
{
    'username': 'john',
    'password': 'secret',
    'email': '******@****.***',
    'full_name': None,
}
```

#### 解包 `dict`

把**字典** `user_dict` 以 `**user_dict` 形式传递给函数（或类），Python 会执行**解包**操作。它会把 `user_dict` 的键和值作为关键字参数直接传递。

因此，接着上面的 `user_dict` 继续编写如下代码：

```Python
UserInDB(**user_dict)
```

    response = client.get("/items/42")
    assert response.status_code == 422, response.text
    assert response.json() == {
        "detail": [
            {
                "loc": ["query", "q"],
                "input": None,
                "msg": "Field required",
                "type": "missing",
            }
        ]
    }


def test_openapi_schema(client: TestClient):
    response = client.get("/openapi.json")

	disks := er.getDisks()
	var wg sync.WaitGroup
	var mu sync.Mutex
	r := rand.New(rand.NewSource(time.Now().UnixNano()))
	for _, i := range r.Perm(len(disks)) {
		wg.Add(1)
		go func() {
			defer wg.Done()
			if disks[i] == nil {
				return
			}
			di, err := disks[i].DiskInfo(context.Background(), DiskInfoOptions{})
			if err != nil || di.Healing {
				// - Do not consume disks which are not reachable

		kmsRouter.Methods(http.MethodGet).Path(version + "/key/status").HandlerFunc(gz(httpTraceAll(kmsAPI.KMSKeyStatusHandler)))
	}

	// If none of the routes match add default error handler routes
	kmsRouter.NotFoundHandler = httpTraceAll(errorResponseHandler)
	kmsRouter.MethodNotAllowedHandler = httpTraceAll(methodNotAllowedHandler("KMS"))

	// we intentionally operate on a copy of m, so we can update without locks.
	t := time.NewTicker(metacacheMaxClientWait / 10)
	defer t.Stop()
	for {
		select {
		case <-ctx.Done():
			// Request is done, stop updating.
			return
		case <-t.C:
			m.lastHandout = time.Now()

			if m2, err := rpc.UpdateMetacacheListing(ctx, m); err == nil {
				if m2.status != scanStateStarted {

                } catch (final IOException ioe) {
                    ioe.printStackTrace(log);
                }
            }
        }
    }

    /* Build a connection. Only one thread will ever call this method at
     * any one time. If this method throws an exception or the connect timeout
     * expires an encapsulating TransportException will be thrown from connect
     * and the transport will be in error.
     */

/// tip | 팁

반환 모델이 값이 항상 존재하고 항상 `int`(`None`이 아님)를 보장하는 것은 API 클라이언트에게 매우 유용합니다. 이를 통해 API와 통신하는 개발자가 훨씬 더 간단한 코드를 작성할 수 있습니다.

또한 **자동으로 생성된 클라이언트**는 더 단순한 인터페이스를 제공하므로, API와 소통하는 개발자들이 훨씬 수월하게 작업할 수 있습니다. 😎

///

`HeroPublic`의 모든 필드는 `HeroBase`와 동일하며, `id`는 `int`로 선언됩니다(`None`이 아님):

* `id`
* `name`
* `age`
* `secret_name`

 * and provides methods for logging messages using {@link LogHelper}.
 * </p>
 *
 * <p>
 * The crawling process continues until the crawler status is {@link CrawlerStatus#DONE} or the
 * {@link #isContinue(int)} method returns {@code false}.
 * </p>
 *
 */
public class CrawlerThread implements Runnable {
    /**
     * Constructs a new CrawlerThread.
     */

# Sub Applications - Mounts { #sub-applications-mounts }

If you need to have two independent FastAPI applications, with their own independent OpenAPI and their own docs UIs, you can have a main app and "mount" one (or more) sub-application(s).

## Mounting a **FastAPI** application { #mounting-a-fastapi-application }