Esto incluye `pydantic.v1`, que ya no está soportado en Python 3.14 y superiores.

Si quieres usar las funcionalidades más recientes de Python, tendrás que asegurarte de usar Pydantic v2.

///

Si tienes una app de FastAPI antigua con Pydantic v1, aquí te muestro cómo migrarla a Pydantic v2, y las **funcionalidades en FastAPI 0.119.0** para ayudarte con una migración gradual.

* [Объект Response OpenAPI](https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.1.0.md#response-object), вы можете включить всё из этого объекта напрямую в каждый ответ внутри вашего параметра `responses`. Включая `description`, `headers`, `content` (внутри него вы объявляете разные типы содержимого и JSON‑схемы) и `links`....

* Si vous devez envoyer des *Form Data* au lieu de JSON, utilisez le paramètre `data` à la place.
* Pour passer des en-têtes, utilisez un `dict` dans le paramètre `headers`.
* Pour les cookies, un `dict` dans le paramètre `cookies`.

 * Not supported by choice on JDK9+ due to access checks.
 *
 * ### Android Cleartext Permit Detection
 *
 * Supported on Android 6.0+ via `NetworkSecurityPolicy`.
 */
open class Platform {
  /** Prefix used on custom headers. */
  fun getPrefix() = "OkHttp"

  open fun newSSLContext(): SSLContext = SSLContext.getInstance("TLS")

  open fun platformTrustManager(): X509TrustManager {
    val factory =
      TrustManagerFactory.getInstance(

* Wenn Sie *Formulardaten* anstelle von JSON senden müssen, verwenden Sie stattdessen den `data`-Parameter.
* Um *Header* zu übergeben, verwenden Sie ein `dict` im `headers`-Parameter.
* Für *Cookies* ein `dict` im `cookies`-Parameter.

import okio.ByteString.Companion.encodeUtf8
import okio.ByteString.Companion.toByteString
import okio.Socket

class RealWebSocket(
  taskRunner: TaskRunner,
  /** The application's original request unadulterated by web socket headers. */
  private val originalRequest: Request,
  internal val listener: WebSocketListener,
  private val random: Random,
  private val pingIntervalMillis: Long,
  /**

import okhttp3.CallEvent.ResponseHeadersEnd
import okhttp3.CallEvent.ResponseHeadersStart
import okhttp3.CallEvent.SecureConnectEnd
import okhttp3.CallEvent.SecureConnectStart
import okhttp3.Credentials.basic
import okhttp3.Headers.Companion.headersOf
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.TestUtil.assumeNotWindows
import okhttp3.internal.RecordingOkAuthenticator
import okhttp3.internal.duplex.AsyncRequestBody

        assertTrue(receivedException.get().getMessage().contains("Failed to access"));
    }

    // --- Compression and request headers verification tests ---

    /**
     * Mock HttpURLConnection that records headers set on the connection.
     */
    class HeaderRecordingMockHttpURLConnection extends HttpURLConnection {

When creating a new file, please make sure to add a header as defined below.

#### Required Files for Copyright Headers:

- Source code files (e.g., `.java`, `.kt`, `.groovy`).
- Documentation files, where applicable (e.g., `.adoc`, `.md`).

#### Exempt Files for Copyright Headers:

- Scripts critical to builds, CI, or deployment (e.g., `.kts`, `.groovy`).
- Auto-generated files (e.g., by code generators).

    client.send(message6)
    serverListener.assertTextMessage(message6)
    closeWebSockets(client, server)
    val upgradeRequest = webServer.takeRequest()
    assertThat(upgradeRequest.headers["Sec-WebSocket-Extensions"])
      .isEqualTo("permessage-deflate")
  }

  @Throws(Exception::class)
  private fun extensionNegotiationFailure(extensionsHeader: String) {
    webServer.enqueue(