**FastAPI** bietet dieselben `starlette.responses` auch via `fastapi.responses` an, als Annehmlichkeit für Sie, den Entwickler. Die meisten verfügbaren Responses kommen aber direkt von Starlette.

## Eine benutzerdefinierte `Response` zurückgeben

  - package-ecosystem: "gomod"
    directory: "/"
    schedule:
      interval: "daily"
    # Limit number of open PRs to 0 so that we only get security updates
    # See https://docs.github.com/en/code-security/dependabot/dependabot-security-updates/configuring-dependabot-security-updates

이 예제에서 `shutdown` 이벤트 핸들러 함수는 `"Application shutdown"`이라는 텍스트가 적힌 `log.txt` 파일을 추가할 것입니다.

!!! info "정보"
    `open()` 함수에서 `mode="a"`는 "추가"를 의미합니다. 따라서 이미 존재하는 파일의 내용을 덮어쓰지 않고 새로운 줄을 추가합니다.

!!! tip "팁"
    이 예제에서는 파일과 상호작용 하기 위해 파이썬 표준 함수인 `open()`을 사용하고 있습니다.

    따라서 디스크에 데이터를 쓰기 위해 "대기"가 필요한 I/O (입력/출력) 작업을 수행합니다.

    그러나 `open()`은 `async`와 `await`을 사용하지 않기 때문에 이벤트 핸들러 함수는 `async def`가 아닌 표준 `def`로 선언하고 있습니다.

!!! info "정보"

    page.screenshot(
        path="docs/en/docs/img/tutorial/separate-openapi-schemas/image02.png"
    )

    # ---------------------
    context.close()
    browser.close()


process = subprocess.Popen(
    ["uvicorn", "docs_src.separate_openapi_schemas.tutorial001:app"]
)
try:
    with sync_playwright() as playwright:
        run(playwright)
finally:

    }


    /**
     * @return whether the stream is open
     */
    public boolean isOpen () {
        return this.handle != null && this.handle.isValid();
    }


    protected synchronized SmbFileHandleImpl ensureOpen () throws CIFSException {
        if ( !isOpen() ) {
            // one extra acquire to keep this open till the stream is released

        Please open Android-related issues on [the Android Issue Tracker](https://source.android.com/source/report-bugs)
        Please open IntelliJ-related issues on [the JetBrains Issue Tracker](https://youtrack.jetbrains.com/newIssue?project=IDEA)
        Please open Gradle Native-related issues on [the Gradle Native repository](https://github.com/gradle/gradle-native/issues)

'layout-fixed',\n    NAVBAR_FIXED   : 'layout-navbar-fixed',\n    FOOTER_FIXED   : 'layout-footer-fixed',\n    LOGIN_PAGE     : 'login-page',\n    REGISTER_PAGE  : 'register-page',\n    CONTROL_SIDEBAR_SLIDE_OPEN: 'control-sidebar-slide-open',\n    CONTROL_SIDEBAR_OPEN: 'control-sidebar-open',\n  }\n\n  const Default = {\n    scrollbarTheme : 'os-theme-light',\n    scrollbarAutoHide: 'l'\n  }\n\n  /**\n   * Class Definition\n   * ====================================================\n   */\n\n  class...

			content []byte
		}
		files := []file{}

		for _, f := range r.File {
			fr, err := f.Open()
			if err != nil {
				continue
			}
			content, err := io.ReadAll(fr)
			if err != nil {
				continue
			}
			files = append(files, file{header: &f.FileHeader, content: content})
			if _, err := r.Open(f.Name); err != nil {
				continue
			}
		}

// os.Lstat()
func Access(name string) (err error) {
	defer updateOSMetrics(osMetricAccess, name)(err)
	return access(name)
}

// Open captures time taken to call os.Open
func Open(name string) (f *os.File, err error) {
	defer updateOSMetrics(osMetricOpen, name)(err)
	return os.Open(name)
}

// OpenFileDirectIO captures time taken to call disk.OpenFileDirectIO

Lassen Sie uns die von **FastAPI** bereitgestellten Tools verwenden, um Sicherheit zu gewährleisten.

## Wie es aussieht

Lassen Sie uns zunächst einfach den Code verwenden und sehen, wie er funktioniert, und dann kommen wir zurück, um zu verstehen, was passiert.

## `main.py` erstellen

Kopieren Sie das Beispiel in eine Datei `main.py`:

=== "Python 3.9+"

    ```Python