* objets JSON (`dict`).
    * listes JSON (`list`) définissant des types d'éléments.
    * Champs String (`str`), définition de longueur minimum ou maximale.
    * Nombres (`int`, `float`) avec valeur minimale and maximale, etc.

* Validation pour des types plus exotiques, tel que:
    * URL.
    * Email.
    * UUID.
    * ...et autres.

    Und das `dict` welches Sie als `weights` erhalten, wird `int`-Schlüssel und `float`-Werte haben.

## Zusammenfassung

Mit **FastAPI** haben Sie die maximale Flexibilität von Pydantic-Modellen, während Ihr Code einfach, kurz und elegant bleibt.

Aber mit all den Vorzügen:

* Editor-Unterstützung (Codevervollständigung überall)

	// occurrences of elements.
	for etag, count := range etagOccurrenceMap {
		if count < maxima {
			continue
		}

		// We are at or above maxima
		if count > maxima {
			maxima = count
			latest = etag
		}
	}

	// Return the collected common max time, with maxima
	return latest, maxima
}

// commonTime returns a maximally occurring time from a list of time.

// values of maximally occurring errors validated against readQuorum.
func reduceReadQuorumErrs(ctx context.Context, errs []error, ignoredErrs []error, readQuorum int) (maxErr error) {
	return reduceQuorumErrs(ctx, errs, ignoredErrs, readQuorum, errErasureReadQuorum)
}

// reduceWriteQuorumErrs behaves like reduceErrs but only for returning
// values of maximally occurring errors validated against writeQuorum.

    * JSON Objekte (`dict`).
    * JSON Listen (`list`), die den Typ ihrer Elemente definieren.
    * Strings (`str`) mit definierter minimaler und maximaler Länge.
    * Zahlen (`int`, `float`) mit Mindest- und Maximal-Werten, usw.

* Validierung für mehr exotische Typen, wie:
    * URL.
    * E-Mail.
    * UUID.
    * ... und andere.

     * unspecified, stale cache responses will not be used.
     *
     * @param maxStale a non-negative integer. This is stored and transmitted with
     *     [TimeUnit.SECONDS] precision; finer precision will be lost.
     */
    fun maxStale(
      maxStale: Int,
      timeUnit: TimeUnit,
    ) = apply {
      require(maxStale >= 0) { "maxStale < 0: $maxStale" }

 *       1 to 100."
 *   <li>When evaluated as a {@link Predicate}, a range yields the same result as invoking {@link
 *       #contains}.
 *   <li>Terminology note: a range {@code a} is said to be the <i>maximal</i> range having property
 *       <i>P</i> if, for all ranges {@code b} also having property <i>P</i>, {@code a.encloses(b)}.
 *       Likewise, {@code a} is <i>minimal</i> when {@code b.encloses(a)} for all {@code b} having

imized-card"},a={DATA_REMOVE:'[data-card-widget="remove"]',DATA_COLLAPSE:'[data-card-widget="collapse"]',DATA_MAXIMIZE:'[data-card-widget="maximize"]',CARD:"."+o.CARD,CARD_HEADER:".card-header",CARD_BODY:".card-body",CARD_FOOTER:".card-footer",COLLAPSED:"."+o.COLLAPSED},r={animationSpeed:"normal",collapseTrigger:a.DATA_COLLAPSE,removeTrigger:a.DATA_REMOVE,maximizeTrigger:a.DATA_MAXIMIZE,collapseIcon:"fa-minus",expandIcon:"fa-plus",maximizeIcon:"fa-expand",minimizeIcon:"fa-compress"},l=function(){function...

versions](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-tls-version/) and [cipher suites](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-cipher-suite/) to offer. A client that wants to maximize connectivity would include obsolete TLS versions and weak-by-design cipher suites. A strict client that wants to maximize security would be limited to only the latest TLS version and strongest cipher suites.

Specific security vs. connectivity decisions are implemented by [ConnectionSpec](https://...

De la même façon que vous pouvez passer `None` comme premier argument pour l'utiliser comme valeur par défaut, vous pouvez passer d'autres valeurs.

Disons que vous déclarez le paramètre `q` comme ayant une longueur minimale de `3`, et une valeur par défaut étant `"fixedquery"` :

```Python hl_lines="7"
{!../../../docs_src/query_params_str_validations/tutorial005.py!}
```

!!! note "Rappel"