> ```
>
> Please make sure this step is carried out, without this step PostgreSQL notification targets will not work,
> an error message will be shown on the console upon server upgrade/restart, make sure to follow the above
> instructions appropriately. For further questions please join our <https://slack.min.io>

When you install FastAPI, it comes with a production server, Uvicorn, and you can start it with the `fastapi run` command.

But you can also install an ASGI server manually.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then you can install the server application.

For example, to install Uvicorn:

<div class="termy">

```console

	return nil
}

func (target *MQTTTarget) init() error {
	return target.initOnce.Do(target.initMQTT)
}

func (target *MQTTTarget) initMQTT() error {
	args := target.args

	// Using hex here, to make sure we avoid 23
	// character limit on client_id according to
	// MQTT spec.
	clientID := fmt.Sprintf("%x", time.Now().UnixNano())

	options := mqtt.NewClientOptions().
		SetClientID(clientID).

      blocker.setOwner(Thread.currentThread());
      if (compareAndSet(currentRunner, blocker)) {
        // Thread.interrupt can throw arbitrary exceptions due to the nio InterruptibleChannel API
        // This will make sure that tasks don't get stuck busy waiting.
        // Some of this is fixed in jdk11 (see https://bugs.openjdk.org/browse/JDK-8198692) but
        // not all.  See the test cases for examples on how this can happen.
        try {

La façon la plus simple de tout mettre en place, serait d'utiliser les [**Générateurs de projet FastAPI**](../project-generation.md){.internal-link target=_blank}.

Le génerateur de projet adéquat est conçu pour être intégré à ce cluster Docker Swarm avec Traefik et HTTPS décrit ci-dessus.

Vous pouvez générer un projet en 2 min environ.

### Télécharger et Installer/Exécuter

Fess 15.3 est désormais disponible et peut être téléchargé sur la [page de Releases](https://github.com/codelibs/fess/releases "download"). Les téléchargements sont disponibles en 3 formats : deb, rpm, zip.

Les commandes suivantes montrent comment utiliser le téléchargement zip :

	for i := range deleteObjectsReq.Objects {
		deleteObjectsReq.Objects[i].ObjectName = trimLeadingSlash(deleteObjectsReq.Objects[i].ObjectName)
		objects[i] = deleteObjectsReq.Objects[i].ObjectV
	}

	// Make sure to update context to print ObjectNames for multi objects.
	ctx = updateReqContext(ctx, objects...)

	// Call checkRequestAuthType to populate ReqInfo.AccessKey before GetBucketInfo()

/// info | Informação

Observe como `Offer` tem uma lista de `Item`s, que por sua vez têm uma lista opcional de `Image`s

///

## Corpos de listas puras { #bodies-of-pure-lists }

Se o valor de primeiro nível do corpo JSON que você espera for um `array` do JSON (uma` lista` do Python), você pode declarar o tipo no parâmetro da função, da mesma forma que nos modelos do Pydantic:

```Python

{* ../../docs_src/query_params_str_validations/tutorial001.py hl[9] *}

Le paramètre de requête `q` a pour type `Union[str, None]` (ou `str | None` en Python 3.10), signifiant qu'il est de type `str` mais pourrait aussi être égal à `None`, et bien sûr, la valeur par défaut est `None`, donc **FastAPI** saura qu'il n'est pas requis.

/// note

**FastAPI** saura que la valeur de `q` n'est pas requise grâce à la valeur par défaut `= None`.

/// info

FastAPI added support for `Annotated` (and started recommending it) in version 0.95.0.

If you have an older version, you would get errors when trying to use `Annotated`.

Make sure you [Upgrade the FastAPI version](../../deployment/versions.md#upgrading-the-fastapi-versions){.internal-link target=_blank} to at least 0.95.1 before using `Annotated`.

///

### Import `Depends` { #import-depends }