`"json_schema_extra"`를 생성된 JSON 스키마에서 보여주고 싶은 별도의 데이터와 `examples`를 포함하는 `dict`으로 설정할 수 있습니다.

////

//// tab | Pydantic v1

 * limitations under the License.
 */
package okhttp3.internal.connection

import okhttp3.Call
import okhttp3.Connection
import okhttp3.Route
import okio.IOException

/**
 * Listener for connection events. Extend this class to monitor the new connections and closes.
 *
 * All event methods must execute fast, without external locking, cannot throw exceptions,

                    && !DependencyScope.TEST.is(dependency.getScope())) {
                pluginValidationManager.reportPluginValidationIssue(
                        PluginValidationManager.IssueLocality.EXTERNAL,
                        session,
                        pluginArtifact,
                        "Plugin depends on the deprecated Maven 2.x compatibility layer, which will be not supported in Maven 4.x");
            }

特别是，你可以直接使用 <a href="https://anyio.readthedocs.io/en/stable/" class="external-link" target="_blank">AnyIO</a> 来处理高级的并发用例，这些用例需要在自己的代码中使用更高级的模式。

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.idn

import kotlin.math.abs
import okio.ByteString

internal sealed interface MappedRange {
  val rangeStart: Int

  data class Constant(
    override val rangeStart: Int,
    val type: Int,
  ) : MappedRange {
    val b1: Int

///

## Casos de Uso { #use-cases }

Alguns casos de uso incluem:

* Converter requisições não-JSON para JSON (por exemplo, <a href="https://msgpack.org/index.html" class="external-link" target="_blank">`msgpack`</a>).
* Descomprimir corpos de requisição comprimidos com gzip.
* Registrar automaticamente todos os corpos de requisição.

For example, let's add <a href="https://github.com/Rebilly/ReDoc/blob/master/docs/redoc-vendor-extensions.md#x-logo" class="external-link" target="_blank">ReDoc's OpenAPI extension to include a custom logo</a>.

### Normal **FastAPI** { #normal-fastapi }

First, write all your **FastAPI** application as normally:

    * 파이썬의 `datetime.timedelta`.
    * 요청과 응답에서 전체 초(seconds)의 `float`로 표현됩니다.
    * Pydantic은 "ISO 8601 시차 인코딩"으로 표현하는 것 또한 허용합니다. <a href="https://docs.pydantic.dev/latest/concepts/serialization/#json_encoders" class="external-link" target="_blank">더 많은 정보는 이 문서에서 확인하십시오.</a>.
* `frozenset`:
    * 요청과 응답에서 `set`와 동일하게 취급됩니다:
        * 요청 시, 리스트를 읽어 중복을 제거하고 `set`로 변환합니다.
        * 응답 시, `set`는 `list`로 변환됩니다.

## Fazit { #conclusion }

Mit diesem Wissen sollten Sie ein grundlegendes Verständnis davon haben, was **Umgebungsvariablen** sind und wie man sie in Python verwendet.

Sie können auch mehr darüber in der <a href="https://en.wikipedia.org/wiki/Environment_variable" class="external-link" target="_blank">Wikipedia zu Umgebungsvariablen</a> lesen.

{* ../../docs_src/app_testing/tutorial002_py39.py hl[27:31] *}

/// note | Nota

Para más detalles, revisa la documentación de Starlette sobre <a href="https://www.starlette.dev/testclient/#testing-websocket-sessions" class="external-link" target="_blank">probar WebSockets</a>.