Der Query-Parameter `q` hat den Typ `Union[str, None]` (oder `str | None` in Python 3.10), was bedeutet, er ist entweder ein `str` oder `None`. Der Defaultwert ist `None`, also weiß FastAPI, der Parameter ist nicht erforderlich.

/// note | "Hinweis"

FastAPI weiß nur dank des definierten Defaultwertes `=None`, dass der Wert von `q` nicht erforderlich ist

`Union[str, None]` hingegen erlaubt ihren Editor, Sie besser zu unterstützen und Fehler zu erkennen.

   * blocks, it can prevent this service from changing state. If you need to performing a blocking
   * operation in order to trigger shutdown, consider instead registering a listener and
   * implementing {@code stopping}. Note, however, that {@code stopping} does not run at exactly the
   * same times as {@code triggerShutdown}.
   */
  protected void triggerShutdown() {}

  /**

   * behavior as {@link #get}, returning a live collection. When passed a key that is not present,
   * however, {@code asMap().get(Object)} returns {@code null} instead of an empty collection.
   *
   * <p><b>Note:</b> The returned map's values are guaranteed to be of type {@link SortedSet}. To
   * obtain this map with the more specific generic type {@code Map<K, SortedSet<V>>}, call {@link

        for ( int i = 0; i < count; i++ ) {
            sb.append(' ');
        }
    }


    /**
     * Return a string represeting this ACE.
     * <p>
     * Note: This function should probably be changed to return SDDL
     * fragments but currently it does not.
     */
    @Override
    public String toString () {
        StringBuffer sb = new StringBuffer();

También puedes notar que **FastAPI** es lo suficientemente inteligente para darse cuenta de que el parámetro de path `item_id` es un parámetro de path y que `q` no lo es, y por lo tanto es un parámetro de query.

///

/// note | Nota

FastAPI sabrá que `q` es opcional por el `= None`.

///

## 「フォームフィールド」について

HTMLフォーム（`<form></form>`）がサーバにデータを送信する方法は、通常、そのデータに「特別な」エンコーディングを使用していますが、これはJSONとは異なります。

**FastAPI** は、JSONの代わりにそのデータを適切な場所から読み込むようにします。

/// note | "技術詳細"

フォームからのデータは通常、`application/x-www-form-urlencoded`の「media type」を使用してエンコードされます。

しかし、フォームがファイルを含む場合は、`multipart/form-data`としてエンコードされます。ファイルの扱いについては次の章で説明します。

<!-- 
  -- Note: this file contains a generated diagram. Use `./gradlew :architectureDoc` to generate 
  -->

# Gradle platform architecture

Gradle is arranged into coarse-grained components called "architecture modules" and "platforms".
See [ADR4](standards/0004-use-a-platform-architecture.md) for a definition of these terms.

The diagram below shows the current set of architecture modules and platforms:

                        result.acceptedApiChanges.push(correction);
                    });
                    // Sort the array in place by type, then member
                    // Note that Firefox is fine with a sort function returning any positive or negative number, but Chrome 
                    // requires 1 or -1 specifically and ignores higher or lower values.  This sort ought to remain consistent

assignment ## Ref: https://kubernetes.io/docs/user-guide/node-selection/ ## nodeSelector: {} tolerations: [] affinity: {} topologySpreadConstr: [] ## Add stateful containers to have security context, if enabled MinIO will run as this ## user and group NOTE: securityContext is only enabled if persistence.enabled=true securityContext: enabled: true runAsUser: 1000 runAsGroup: 1000 fsGroup: 1000 fsGroupChangePolicy: "OnRootMismatch" # Additational pod annotations podAnnotations: {} # Additional pod labels...

assignment ## Ref: https://kubernetes.io/docs/user-guide/node-selection/ ## nodeSelector: {} tolerations: [] affinity: {} topologySpreadConstr: [] ## Add stateful containers to have security context, if enabled MinIO will run as this ## user and group NOTE: securityContext is only enabled if persistence.enabled=true securityContext: enabled: true runAsUser: 1000 runAsGroup: 1000 fsGroup: 1000 fsGroupChangePolicy: "OnRootMismatch" # Additational pod annotations podAnnotations: {} # Additional pod labels...