이 문서는 파이썬 타입 힌트에 대한 **빠른 자습서 / 내용환기** 수준의 문서입니다. 여기서는 **FastAPI**를 쓰기 위한 최소한의 내용만을 다룹니다.

**FastAPI**는 타입 힌트에 기반을 두고 있으며, 이는 많은 장점과 이익이 있습니다.

비록 **FastAPI**를 쓰지 않는다고 하더라도, 조금이라도 알아두면 도움이 될 것입니다.

/// note | 참고

파이썬에 능숙하셔서 타입 힌트에 대해 모두 아신다면, 다음 챕터로 건너뛰세요.

///

## 동기 부여

간단한 예제부터 시작해봅시다:

{* ../../docs_src/python_types/tutorial001.py *}


이 프로그램을 실행한 결과값:

```
John Doe
```

Обычно этот **прокси** на лету добавляет некоторые HTTP‑заголовки перед тем, как переслать запрос на **сервер приложения**, чтобы тот знал, что запрос был **проксирован**.

/// note | Технические детали

Заголовки прокси:

* <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/X-Forwarded-For" class="external-link" target="_blank">X-Forwarded-For</a>

    /// note | Hinweis

    Das `--no-cache-dir` bezieht sich nur auf `pip`, es hat nichts mit Docker oder Containern zu tun.

    ///

Es spielt keine Rolle. **FastAPI** weiß, was zu tun ist.

/// note | Hinweis

Wenn Ihnen das nichts sagt, lesen Sie den [Async: *„In Eile?“*](../../async.md#in-a-hurry){.internal-link target=_blank}-Abschnitt über `async` und `await` in der Dokumentation.

///

OpenAPI에서는 이를 `anyOf`로 정의합니다.

이를 위해 표준 Python 타입 힌트인 <a href="https://docs.python.org/3/library/typing.html#typing.Union" class="external-link" target="_blank">`typing.Union`</a>을 사용할 수 있습니다:

/// note | 참고

# without having to replace the drive letter with C:\ every time.
# Such a workaround is not required on Linux, since it
# can create arbitrary paths within the container, e.g., '/t'.
# Note: This does not affect/work for `docker cp` commands.
RUN New-Item -ItemType directory -Path C:\drive_t; \

## Node labels for pod assignment ## Ref: https://kubernetes.io/docs/user-guide/node-selection/ ## nodeSelector: {} tolerations: [] affinity: {} ## Add stateful containers to have security context, if enabled MinIO will run as this ## user and group NOTE: securityContext is only enabled if persistence.enabled=true securityContext: enabled: true runAsUser: 1000 runAsGroup: 1000 fsGroup: 1000 # Additational pod annotations podAnnotations: {} # Additional pod labels podLabels: {} ## Configure resource...

## Node labels for pod assignment ## Ref: https://kubernetes.io/docs/user-guide/node-selection/ ## nodeSelector: {} tolerations: [] affinity: {} ## Add stateful containers to have security context, if enabled MinIO will run as this ## user and group NOTE: securityContext is only enabled if persistence.enabled=true securityContext: enabled: true runAsUser: 1000 runAsGroup: 1000 fsGroup: 1000 # Additational pod annotations podAnnotations: {} # Additional pod labels podLabels: {} ## Configure resource...

///

And if you click it, you have a little authorization form to type a `username` and `password` (and other optional fields):

<img src="/img/tutorial/security/image02.png">

/// note

It doesn't matter what you type in the form, it won't work yet. But we'll get there.

///

This is of course not the frontend for the final users, but it's a great automatic tool to document interactively all your API.

	}
	if !m.checkSeq(msg.Seq) {
		return
	}
	m.recvMu.Lock()
	defer m.recvMu.Unlock()
	if cap(m.inbound) == 0 {
		m.disconnect("did not expect inbound message", true)
		return
	}
	// Note, on EOF no value can be sent.
	if msg.Flags&FlagEOF != 0 {
		if len(msg.Payload) > 0 {
			gridLogIf(m.ctx, fmt.Errorf("muxServer: EOF message with payload"))
		}
		if m.inbound != nil {