# WebSockets

여러분은 **FastAPI**에서 <a href="https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API" class="external-link" target="_blank">WebSockets</a>를 사용할 수 있습니다.

## `WebSockets` 설치

[가상 환경](../virtual-environments.md){.internal-link target=_blank)를 생성하고 활성화한 다음, `websockets`를 설치하세요:

<div class="termy">

```console
$ pip install websockets

---> 100%
```

</div>

## WebSockets 클라이언트

### 프로덕션 환경에서

@SuppressWarnings("rawtypes") // https://github.com/google/guava/issues/989
@DoNotMock("Use ImmutableRangeMap or TreeRangeMap")
@GwtIncompatible
public interface RangeMap<K extends Comparable, V> {
  /*
   * TODO(cpovirk): These docs sometimes say "map" and sometimes say "range map." Pick one, or at
   * least decide on a policy for when to use which.
   */

  /**

```

## Log Message Guidelines

- Format parameters as `key=value` (e.g., `sessionId={}`, `url={}`)
- Prefix with `[name]` when context identification is needed
- Use full words, not abbreviations (e.g., "documents" not "docs")

   <span style="background-color:#007166"><font color="#D3D7CF"> server </font></span>  Documentation at <font color="#729FCF"><u style="text-decoration-style:solid">http://0.0.0.0:8000/docs</u></font>

             Logs:

Например, у вас есть файл `main.py`:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip | Совет

Второй аргумент <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> - это возвращаемое по умолчанию значение.

        * Uma chave `schema`, que contém como valor o JSON Schema do modelo, sendo este o local correto.
            * O **FastAPI** adiciona aqui a referência dos esquemas JSON globais que estão localizados em outro lugar, ao invés de incluí-lo diretamente. Deste modo, outras aplicações e clientes podem utilizar estes esquemas JSON diretamente, fornecer melhores ferramentas de geração de código, etc.

{* ../../docs_src/python_types/tutorial010.py hl[6] *}


そして、再び、すべてのエディタのサポートを得ることができます:

<img src="https://fastapi.tiangolo.com/img/python-types/image06.png">

## Pydanticのモデル

<a href="https://docs.pydantic.dev/" class="external-link" target="_blank">Pydantic</a> はデータ検証を行うためのPythonライブラリです。

データの「形」を属性付きのクラスとして宣言します。

そして、それぞれの属性は型を持ちます。

     */
    private static final String FAMILY_NETWARE = "netware";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_DOS = "dos";

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_MAC = "mac";

    /**
     * OS family that can be tested for. {@value}
     */

  /*
   * This matches the same characters as linear-white-space from RFC 822, but we make no effort to
   * enforce any particular rules with regards to line folding as stated in the class docs.
   */
  private static final CharMatcher LINEAR_WHITE_SPACE = CharMatcher.anyOf(" \t\r\n");

  // TODO(gak): make these public?
  private static final String APPLICATION_TYPE = "application";

 * </ul>
 *
 * <p>References:</p>
 * <ul>
 * <li><a href="https://datatracker.ietf.org/doc/html/rfc9309">RFC 9309 - Robots Exclusion Protocol</a></li>
 * <li><a href="https://developers.google.com/search/docs/crawling-indexing/robots/robots_txt">
 * Google's robots.txt Specification</a></li>
 * </ul>
 *
 * @author bowez
 * @author shinsuke
 *
 */
public class RobotsTxtHelper {