object OkHttp {
  /**
   * This is a string like "4.5.0-RC1", "4.5.0", or "4.6.0-SNAPSHOT" indicating the version of
   * OkHttp in the current runtime. Use this to include the OkHttp version in custom `User-Agent`
   * headers.
   *
   * Official OkHttp releases follow [semantic versioning][semver]. Versions with the `-SNAPSHOT`
   * qualifier are not unique and should only be used in development environments. If you create

            if (userAgent == null) {
                Properties headers = new Properties();

                headers.put(
                        "User-Agent",
                        ConfigUtils.getString(
                                legacySupport.getRepositorySession(), "Maven", ConfigurationProperties.USER_AGENT));
                try {

    val parts = header.split(':', limit = 2)
    if (!isSpecialHeader(parts[0])) {
      request.header(parts[0], parts[1])
    }
  }
  referer?.let {
    request.header("Referer", it)
  }
  request.header("User-Agent", userAgent)

  return request.build()
}

private fun Main.mediaType(): MediaType? {
  val mimeType =
    headers?.let {
      for (header in it) {
        val parts = header.split(':', limit = 2)

	// MinioReleaseURL - release URL.
	MinioReleaseURL = MinioReleaseBaseURL + minioOSARCH + SlashSeparator

	// MinioStoreName - MinIO store name.
	MinioStoreName = "MinIO"

	// MinioUAName - MinIO user agent name.
	MinioUAName = "MinIO"

	// MinioBannerName - MinIO banner name for startup message.
	MinioBannerName = "MinIO Object Storage Server"

	// MinioLicense - MinIO server license.

Aber eine Variable wie `user-agent` ist in Python nicht gültig.

Darum wird `Header` standardmäßig in Parameternamen den Unterstrich (`_`) zu einem Bindestrich (`-`) konvertieren.

HTTP-Header sind außerdem unabhängig von Groß-/Kleinschreibung, darum können Sie sie mittels der Standard-Python-Schreibweise deklarieren (auch bekannt als "snake_case").

# This is intended to explore new features coming to Istio.
# Stability, security, and performance are not guaranteed - use at your own risk.
meshConfig:
  defaultConfig:
    proxyMetadata:
      # Enable Istio agent to handle DNS requests for known hosts
      # Unknown hosts will automatically be resolved using upstream dns servers in resolv.conf

    assertThat(recorded.headers["Accept-Encoding"]).isEqualTo("gzip, x-gzip, deflate")
    assertThat(recorded.headers["Connection"]).isEqualTo("keep-alive")
    assertThat(recorded.headers["User-Agent"]!!).startsWith("Apache-HttpClient/")
  }

        "domains": [
         "*"
        ],
        "routes": [
         {
          "match": {
           "prefix": "/healthz/ready"
          },
          "route": {
           "cluster": "agent"
          }
         }
        ]
       }
      ]
     },
     "last_updated": "2023-11-29T09:58:27.299Z"
    },
    {
     "route_config": {

Таким образом вы можете использовать `user_agent`, как обычно, в коде Python, вместо того, чтобы вводить заглавные буквы как `User_Agent` или что-то подобное.

Если по какой-либо причине вам необходимо отключить автоматическое преобразование подчеркиваний в дефисы, установите для параметра `convert_underscores` в `Header` значение `False`:

=== "Python 3.10+"

    assertThat(recorded.headers["Accept"]).isEqualTo("text/plain")
    assertThat(recorded.headers["Accept-Encoding"]).isEqualTo("gzip")
    assertThat(recorded.headers["Connection"]).isNull()
    assertThat(recorded.headers["User-Agent"]!!).matches(Regex("Jetty/.*"))
  }