{* ../../docs_src/security/tutorial001_an_py39.py *}

## Execute-o { #run-it }

/// info | Informação

O pacote <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a> é instalado automaticamente com o **FastAPI** quando você executa o comando `pip install "fastapi[standard]"`.

    * `Path()`
    * `Query()`
    * `Header()`
    * `Cookie()`

Sin embargo, si usas el comando `pip install fastapi`, el paquete `python-multipart` no se incluye por defecto.

Para instalarlo manualmente, asegúrate de crear un [entorno virtual](../../virtual-environments.md){.internal-link target=_blank}, activarlo, y luego instalarlo con:

そのため、OpenAPIでは同じ目的のために<a href="https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.3.md#fixed-fields-20" class="external-link" target="_blank">`example`</a>を独自に定義しており（`examples`ではなく`example`として）、それがdocs UI（Swagger UIを使用）で使用されています。

## Технічні деталі

Клас `BackgroundTasks` походить безпосередньо з <a href="https://www.starlette.dev/background/" class="external-link" target="_blank">`starlette.background`</a>.

Він імпортується безпосередньо у FastAPI, щоб Ви могли використовувати його з `fastapi` і випадково не імпортували `BackgroundTask` (без s в кінці) з `starlette.background`.

/// info

`status_code` can alternatively also receive an `IntEnum`, such as Python's <a href="https://docs.python.org/3/library/http.html#http.HTTPStatus" class="external-link" target="_blank">`http.HTTPStatus`</a>.

///

It will:

* Return that status code in the response.
* Document it as such in the OpenAPI schema (and so, in the user interfaces):

        }
    }

    /**
     * DuplicateMerger
     */
    protected static class DuplicateMerger extends MavenModelMerger {

        public void mergePlugin(Plugin target, Plugin source) {
            super.mergePlugin(target, source, false, Collections.emptyMap());
        }
    }

    @Override
    public void injectDefaultValues(Model model, ModelBuildingRequest request, ModelProblemCollector problems) {

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import jakarta.validation.Constraint;
import jakarta.validation.Payload;

/**
 * Validation constraint to ensure that a string is a valid cron expression.
 */
@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
@Retention(RUNTIME)
@Documented

Um hochgeladene Dateien und/oder Formulardaten zu empfangen, installieren Sie zuerst <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Stellen Sie sicher, dass Sie eine [virtuelle Umgebung](../virtual-environments.md){.internal-link target=_blank} erstellen, diese aktivieren und es dann installieren, z. B.:

```console
$ pip install python-multipart
```

///

# Body - Updates { #body-updates }

## Update replacing with `PUT` { #update-replacing-with-put }

To update an item you can use the <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods/PUT" class="external-link" target="_blank">HTTP `PUT`</a> operation.

You can use the `jsonable_encoder` to convert the input data to data that can be stored as JSON (e.g. with a NoSQL database). For example, converting `datetime` to `str`.