Имейте в виду, что в этом случае FastAPI не будет проверять содержимое списка.

Например, `list[int]` проверит (и задокументирует), что элементы списка — целые числа. А просто `list` — нет.

///

## Больше метаданных { #declare-more-metadata }

Можно добавить больше информации о параметре.

Эта информация будет включена в сгенерированную OpenAPI-схему и использована интерфейсами документации и внешними инструментами.

q: Annotated[str | None, Query(min_length=3)] = None
```

Así que, cuando necesites declarar un valor como requerido mientras usas `Query`, simplemente puedes no declarar un valor por defecto:

{* ../../docs_src/query_params_str_validations/tutorial006_an_py39.py hl[9] *}

### Requerido, puede ser `None` { #required-can-be-none }

  abstract void handleAllCompleted();

  /** Adds the chain to the seen set, and returns whether all the chain was new to us. */
  private static boolean addCausalChain(Set<Throwable> seen, Throwable param) {
    // Declare a "true" local variable so that the Checker Framework will infer nullness.
    Throwable t = param;

    for (; t != null; t = t.getCause()) {
      boolean firstTimeSeen = seen.add(t);
      if (!firstTimeSeen) {

* Vérifier qu'il existe un paramètre de requête facultatif nommé `q` (comme dans `http://127.0.0.1:8000/items/foo?q=somequery`) pour les requêtes `GET`.
    * Puisque le paramètre `q` est déclaré avec `= None`, il est facultatif.
    * Sans le `None`, il serait nécessaire (comme l'est <abbr title="en anglais : body">le corps</abbr> de la requête dans le cas du `PUT`).

If not specified and the dependency has `yield`, it will have a `scope` of `"request"` by default.

### `scope` for sub-dependencies { #scope-for-sub-dependencies }

When you declare a dependency with a `scope="request"` (the default), any sub-dependency needs to also have a `scope` of `"request"`.

    checkNotNull(fromKey);
    return newView(sortedDelegate.tailMap(fromKey));
  }

  public ImmutableSortedMap<K, V> tailMap(K fromKeyParam, boolean inclusive) {
    // Declare a "true" local variable so that the Checker Framework will infer nullness.
    K fromKey = fromKeyParam;
    checkNotNull(fromKey);
    if (!inclusive) {
      fromKey = higher(fromKey);
      if (fromKey == null) {

Zum Beispiel würde `list[int]` überprüfen (und dokumentieren), dass der Inhalt der Liste Ganzzahlen sind. Aber `list` alleine würde das nicht.

///

## Mehr Metadaten deklarieren { #declare-more-metadata }

Sie können mehr Informationen über den Parameter hinzufügen.

Diese Informationen werden in das generierte OpenAPI aufgenommen und von den Dokumentationsoberflächen und externen Tools verwendet.

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[157] *}

## Scopes in *Pfadoperationen* und Abhängigkeiten deklarieren { #declare-scopes-in-path-operations-and-dependencies }

Jetzt deklarieren wir, dass die *Pfadoperation* für `/users/me/items/` den Scope `items` erfordert.

Dazu importieren und verwenden wir `Security` von `fastapi`.

    return startIndex == endIndex
        ? EMPTY
        : new ImmutableLongArray(array, start + startIndex, start + endIndex);
  }

  @IgnoreJRERequirement // used only from APIs that use streams
  /*
   * We declare this as package-private, rather than private, to avoid generating a synthetic
   * accessor method (under -target 8) that would lack the Android flavor's @IgnoreJRERequirement.
   */
  Spliterator.OfLong spliterator() {

    return startIndex == endIndex
        ? EMPTY
        : new ImmutableIntArray(array, start + startIndex, start + endIndex);
  }

  /*
   * We declare this as package-private, rather than private, to avoid generating a synthetic
   * accessor method (under -target 8) that would lack the Android flavor's @IgnoreJRERequirement.
   */
  Spliterator.OfInt spliterator() {