```Python hl_lines="7"
{!../../../docs_src/first_steps/tutorial003.py!}
```

!!! note

    Eğer farkı bilmiyorsanız, [Async: *"Acelesi var?"*](../async.md#in-a-hurry){.internal-link target=_blank} kontrol edebilirsiniz.

### Adım 5: İçeriği geri döndürün


```Python hl_lines="8"
{!../../../docs_src/first_steps/tutorial001.py!}
```

    fun verify(
      hostname: String?,
      session: SSLSession?,
    ): Boolean {
      return true
    }

    override fun verify(
      certs: Array<out X509Certificate>?,
      hostname: String?,
      session: SSLSession?,
    ): Boolean {
      return true
    }
  }

  override fun trustManager(sslSocketFactory: SSLSocketFactory): X509TrustManager? = null

    )

    check(latch.await(10, TimeUnit.SECONDS)) { "Timed out waiting for count." }
  }

  companion object {
    private const val HOST = "ws://localhost:9099"

    @JvmStatic fun main(args: Array<String>) {
      AutobahnTester().run()
    }
  }

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

**Note**:

如果你不知道是否会用到，可以查看文档的 _"In a hurry?"_ 章节中 <a href="https://fastapi.tiangolo.com/zh/async/#in-a-hurry" target="_blank">关于 `async` 和 `await` 的部分</a>。

</details>

### 运行

通过以下命令运行服务器：

<div class="termy">

```console
$ uvicorn main:app --reload

                ],
                "type": "object",
                "properties": {
                    "loc": {
                        "title": "Location",
                        "type": "array",
                        "items": {
                            "type": "string"
                        }
                    },
                    "msg": {
                        "title": "Message",

        visitBinaryName(binaryNameOfBaseType(descriptor))

    override fun visitArrayType(): SignatureVisitor =
        TypeSignatureVisitor(asmLevel).also {
            visitBinaryName("kotlin.Array")
            isArray = true
            typeArguments.add(it)
        }

    override fun visitClassType(internalName: String) =
        visitBinaryName(binaryNameOfInternalName(internalName))

    Beachten Sie, wie `Offer` eine Liste von `Item`s hat, von denen jedes seinerseits eine optionale Liste von `Image`s hat.

## Bodys aus reinen Listen

Wenn Sie möchten, dass das äußerste Element des JSON-Bodys ein JSON-`array` (eine Python-`list`e) ist, können Sie den Typ im Funktionsparameter deklarieren, mit der gleichen Syntax wie in Pydantic-Modellen:

```Python
images: List[Image]
```

oder in Python 3.9 und darüber:

        override fun checkClientTrusted(
          chain: Array<X509Certificate>,
          authType: String,
        ) = throw CertificateException()

        override fun checkServerTrusted(
          chain: Array<X509Certificate>,
          authType: String,
        ) = throw AssertionError()

        override fun getAcceptedIssuers(): Array<X509Certificate> = throw AssertionError()
      }

---

你也可以将其定义为常规函数而不使用 `async def`:

```Python hl_lines="7"
{!../../../docs_src/first_steps/tutorial003.py!}
```

!!! note
    如果你不知道两者的区别，请查阅 [Async: *"In a hurry?"*](https://fastapi.tiangolo.com/async/#in-a-hurry){.internal-link target=_blank}。

### 步骤 5：返回内容

```Python hl_lines="8"
{!../../../docs_src/first_steps/tutorial001.py!}
```

你可以返回一个 `dict`、`list`，像 `str`、`int` 一样的单个值，等等。

   * represented in binary.
   */
  private val FLAGS = arrayOfNulls<String>(0x40) // Highest bit flag is 0x20.
  private val BINARY =
    Array(256) {
      format("%8s", Integer.toBinaryString(it)).replace(' ', '0')
    }

  init {
    FLAGS[FLAG_NONE] = ""
    FLAGS[FLAG_END_STREAM] = "END_STREAM"

    val prefixFlags = intArrayOf(FLAG_END_STREAM)