Aber schauen wir uns zunächst ein paar kleine Konzepte an.

## In Eile? { #in-a-hurry }

Wenn Ihnen diese Begriffe egal sind und Sie einfach *jetzt* Sicherheit mit Authentifizierung basierend auf Benutzername und Passwort hinzufügen müssen, fahren Sie mit den nächsten Kapiteln fort.

## OAuth2 { #oauth2 }

the name again!'

  `I won't indeed!' said Alice, in a great hurry to change the
subject of conversation.  `Are you--are you fond--of--of dogs?'
The Mouse did not answer, so Alice went on eagerly:  `There is
such a nice little dog near our house I should like to show you!
A little bright-eyed terrier, you know, with oh, such long curly
brown hair!  And it'll fetch things when you throw them, and

     * Configures this to not authenticate the HTTPS server on to [hostname]. This makes the user
     * vulnerable to man-in-the-middle attacks and should only be used only in private development
     * environments and only to carry test data.
     *
     * The server’s TLS certificate **does not need to be signed** by a trusted certificate
     * authority. Instead, it will trust any well-formed certificate, even if it is self-signed.

    for (int i = 0; i < 2; i++) {
      typesLists.add(POSSIBLE_PARAM_TYPES);
      for (List<Class<?>> curr : Lists.cartesianProduct(typesLists)) {
        allOverloads.add(
            ImmutableList.<Class<?>>builder()
                .add(predicateType)
                .add(String.class) // the format string
                .addAll(curr)
                .build());
      }
    }
    return allOverloads.build().asList();
  }

{* ../../docs_src/first_steps/tutorial003.py hl[7] *}

/// note | Not

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

///

### Adım 5: İçeriği Geri Döndürün

{* ../../docs_src/first_steps/tutorial001.py hl[8] *}

@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

        «««
        ## Typhinweise und –annotationen { #type-hints-and-annotations }
        »»»

3.2) Do not apply rule 3 to the untranslated part of the heading inside curly brackets, which you shall not translate.


### German instructions, when to use and when not to use hyphens in words (written in first person, which is you)

# Конкурентность и async / await { #concurrency-and-async-await }

Подробности о синтаксисе `async def` для *функций-обработчиков пути* и немного фона об асинхронном коде, конкурентности и параллелизме.

## Нет времени? { #in-a-hurry }

<abbr title="too long; didn't read – слишком длинно; не читал"><strong>TL;DR:</strong></abbr>

Если вы используете сторонние библиотеки, которые нужно вызывать с `await`, например:

```Python
results = await some_library()

func xlMetaV2TrimData(buf []byte) []byte {
	metaBuf, maj, minor, err := checkXL2V1(buf)
	if err != nil {
		return buf
	}
	if maj == 1 && minor < 1 {
		// First version to carry data.
		return buf
	}
	// Skip header
	_, metaBuf, err = msgp.ReadBytesZC(metaBuf)
	if err != nil {
		storageLogIf(GlobalContext, err)
		return buf
	}
	// Skip CRC
	if maj > 1 || minor >= 2 {

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works
          that You distribute, all copyright, patent, trademark, and