By asking questions in a structured way (following this) it will be much easier to help you.

        And there's a high chance that you will find the solution along the way and you won't even have to submit it and wait for an answer. 😎

        As there are too many questions, I'll have to discard and close the incomplete ones. That will allow me (and others) to focus on helping people like you that follow the whole process and help us help you. 🤓

		defer cancel()
	}
	// Send request
	if err := m.send(msg); err != nil {
		return nil, err
	}
	if debugReqs {
		fmt.Println(m.MuxID, m.parent.String(), "SEND")
	}
	// Wait for response or context.
	select {
	case v, ok := <-ch:
		if !ok {
			return nil, ErrDisconnected
		}
		if debugReqs && v.Err != nil {

Não faz diferença. O **FastAPI** sabe o que fazer.

/// note | Nota

Caso você não conheça, veja em [Async: *"Com Pressa?"*](../../async.md#in-a-hurry) a sessão acerca de `async` e `await` na documentação.

///

## Integrando com OpenAPI { #integrated-with-openapi }

            latch.countDown();
        }, e -> {
            latch.countDown();
        });

        // ## Assert ##
        assertTrue("Async execution should complete within 5 seconds", latch.await(5, TimeUnit.SECONDS));
        assertNotNull(threadName.get());
        // The async execution should have run on a ForkJoinPool thread, not the main thread

def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>Or use <code>async def</code>...</summary>

If your code uses `async` / `await`, use `async def`:

```Python hl_lines="7  12"
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():
    return {"Hello": "World"}

@app.get("/items/{item_id}")
def read_item(item_id: int, q: str | None = None):
    return {"item_id": item_id, "q": q}
```

<details markdown="1">
<summary>或使用 <code>async def</code>...</summary>

如果你的程式碼使用 `async` / `await`，請使用 `async def`：

```Python hl_lines="7  12"
from fastapi import FastAPI

app = FastAPI()


@app.get("/")
async def read_root():
    return {"Hello": "World"}

            (WeakReference<?>) sepFwrCons.newInstance(sepStopwatchA.get(), sepFrqA.get()));
    assertThat(sepStopwatchA.get()).isNotNull();
    // Clear all references to the Stopwatch and wait for it to be gc'd.
    sepStopwatchA.set(null);
    GcFinalization.awaitClear(sepStopwatchRef.get());
    // Return a weak reference to the parallel ClassLoader. This is the reference that should

    /**
     * Function code to peek at named pipe data without removing it
     */
    public static final int FSCTL_PIPE_PEEK = 0x0011400C;
    /**
     * Function code to wait for a named pipe to become available
     */
    public static final int FSCTL_PIPE_WAIT = 0x00110018;
    /**
     * Function code to transceive data on a named pipe
     */

pkg testing/fstest, method (MapFS) ReadLink(string) (string, error) #49580
pkg testing/synctest, func Test(*testing.T, func(*testing.T)) #67434
pkg testing/synctest, func Wait() #67434
pkg unicode, var CategoryAliases map[string]string #70780
pkg unicode, var Cn *RangeTable #70780

你可以使用 `async def` 或普通的 `def`。

你可以在普通的 `def` *路径操作函数*中声明 `async def` 的依赖项；也可以在异步的 `async def` *路径操作函数*中声明普通的 `def` 依赖项，等等。

都没关系，**FastAPI** 知道该怎么处理。

/// note | 注意

如果不了解异步，请参阅文档中关于 `async` 和 `await` 的章节：[异步：*“着急了？”*](../../async.md#in-a-hurry)。

///

## 与 OpenAPI 集成 { #integrated-with-openapi }

依赖项及子依赖项中声明的所有请求、验证和需求都会集成到同一个 OpenAPI 模式中。

因此，交互式文档中也会包含这些依赖项的所有信息：