**FastAPI**) basieren auf <a href="https://anyio.readthedocs.io/en/stable/" class="external-link" target="_blank">AnyIO</a>, was bedeutet, dass es sowohl kompatibel mit der Python-Standardbibliothek <a href="https://docs.python.org/3/library/asyncio-task.html" class="external-link" target="_blank">asyncio</a> als auch mit <a href="https://trio.readthedocs.io/en/stable/" class="external-link" target="_blank">Trio</a> ist.

Insbesondere können Sie <a href="https://anyio.readthedocs.io/en/stable/"...

В этом случае они будут применяться ко всем *операциям пути* в приложении:

{* ../../docs_src/dependencies/tutorial012_an_py39.py hl[17] *}

/// tip | Совет

В Pydantic также есть <a href="https://docs.pydantic.dev/latest/concepts/validators/#field-before-validator" class="external-link" target="_blank">`BeforeValidator`</a> и другие. 🤓

///

	cmd = exec.Command(goTool, "list", "-f", "{{.Target}}", "cmd/go")
	cmd.Stderr = os.Stderr
	out, err = cmd.Output()
	if err != nil {
		return fmt.Errorf("%v: %w", cmd, err)
	}
	platformBin := filepath.Dir(string(bytes.TrimSpace(out)))
	if platformBin == "." {
		return errors.New("failed to locate cmd/go for target platform")
	}

## Technische Details { #technical-details }

Die Klasse `BackgroundTasks` stammt direkt von <a href="https://www.starlette.dev/background/" class="external-link" target="_blank">`starlette.background`</a>.

## Actualización reemplazando con `PUT` { #update-replacing-with-put }

Para actualizar un ítem puedes utilizar la operación de <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PUT" class="external-link" target="_blank">HTTP `PUT`</a>.

Puedes usar el `jsonable_encoder` para convertir los datos de entrada en datos que se puedan almacenar como JSON (por ejemplo, con una base de datos NoSQL). Por ejemplo, convirtiendo `datetime` a `str`.

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

///

# CORS (Cross-Origin Resource Sharing) { #cors-cross-origin-resource-sharing }

# 测试

感谢 <a href="https://www.starlette.dev/testclient/" class="external-link" target="_blank">Starlette</a>，测试**FastAPI** 应用轻松又愉快。

它基于 <a href="https://www.python-httpx.org" class="external-link" target="_blank">HTTPX</a>， 而HTTPX又是基于Requests设计的，所以很相似且易懂。

有了它，你可以直接与**FastAPI**一起使用 <a href="https://docs.pytest.org/" class="external-link" target="_blank">pytest</a>。

## 使用 `TestClient`

/// info | 信息

## Dependências para conjuntos de *operações de rota* { #dependencies-for-groups-of-path-operations }