response = client.get("/openapi.json")
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",
            "info": {"title": "FastAPI", "version": "0.1.0"},
            "paths": {
                "/": {
                    "post": {
                        "summary": "Post Root",
                        "operationId": "foo_post_root",
                        "requestBody": {

`Query`, `Path` ve `Cookie` parametrelerini nasıl tanımlıyorsanız, Header parametrelerini de aynı şekilde tanımlayabilirsiniz.

## `Header`'ı Import Edin { #import-header }

Önce `Header`'ı import edin:

{* ../../docs_src/header_params/tutorial001_an_py310.py hl[3] *}

## `Header` Parametrelerini Tanımlayın { #declare-header-parameters }

            UpgradeContext context = createMockContext();

            // Create a temporary directory with a POM file for the test
            Path tempDir = Files.createTempDirectory("check-test");
            try {
                Path pomFile = tempDir.resolve("pom.xml");
                String pomContent = PomBuilder.create()
                        .groupId("test")
                        .artifactId("test")

     */
    public WebApiRequest(final HttpServletRequest request, final String servletPath) {
        super(request);
        this.servletPath = servletPath;
    }

    /**
     * Gets the servlet path for this request.
     * Returns the custom servlet path unless the query string contains SAStruts.method.
     *
     * @return The servlet path
     */
    @Override

{* ../../docs_src/body/tutorial002_py310.py *}

## Request body + parámetros de path { #request-body-path-parameters }

Puedes declarar parámetros de path y request body al mismo tiempo.

**FastAPI** reconocerá que los parámetros de función que coinciden con los parámetros de path deben ser **tomados del path**, y que los parámetros de función que se declaran como modelos de Pydantic deben ser **tomados del request body**.

package okhttp3.internal.publicsuffix

import okio.FileSystem
import okio.Path
import okio.Path.Companion.toPath
import okio.Source

internal class ResourcePublicSuffixList(
  override val path: Path = PUBLIC_SUFFIX_RESOURCE,
  val fileSystem: FileSystem = FileSystem.Companion.RESOURCES,
) : BasePublicSuffixList() {
  override fun listSource(): Source = fileSystem.source(path)

  companion object {
    @JvmField

In diesem Fall werden sie auf alle *Pfadoperationen* in der Anwendung angewendet:

{* ../../docs_src/dependencies/tutorial012_an_py310.py hl[17] *}

{
    # Relaunch as an elevated process:
    Start-Process powershell.exe "-File",('"{0}"' -f $MyInvocation.MyCommand.Path) -Verb RunAs
    exit
}

$AppProps = ConvertFrom-StringData (Get-Content .ci/java-versions.properties -raw)
$env:ES_BUILD_JAVA=$AppProps.ES_BUILD_JAVA
$env:ES_RUNTIME_JAVA=$AppProps.ES_RUNTIME_JAVA

            }
        }

        for (String path : expiredPaths) {
            log.debug("Cleaning up expired directory cache entry: {}", path);
            releaseDirectoryLease(path);
        }
    }

    /**
     * Create SmbFile from cached file info
     *
     * @param directoryPath parent directory path
     * @param fileInfo cached file information
     * @return SmbFile instance

## Переменная окружения `PATH` { #path-environment-variable }

Существует **специальная** переменная окружения **`PATH`**, которая используется операционными системами (Linux, macOS, Windows) для поиска программ для запуска.

Значение переменной `PATH` - это длинная строка, состоящая из каталогов, разделенных двоеточием `:` в Linux и macOS, и точкой с запятой `;` в Windows.