<mxGeometry relative="1" as="geometry">
                        <mxPoint x="50" y="500" as="sourcePoint"/>
                        <Array as="points">
                            <mxPoint x="50" y="740"/>
                        </Array>
                    </mxGeometry>
                </mxCell>

            alias="item-query",
            title="Query string",
            description="Query string for the items to search in the database that have a good match",
            min_length=3,
            max_length=50,
            pattern="^fixedquery$",
            deprecated=True,
        ),
    ] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

                    <mxGeometry relative="1" as="geometry">
                        <mxPoint x="50" y="500" as="sourcePoint"/>
                        <Array as="points">
                            <mxPoint x="50" y="740"/>
                        </Array>
                    </mxGeometry>
                </mxCell>

        default=None,
        alias="item-query",
        title="Query string",
        description="Query string for the items to search in the database that have a good match",
        min_length=3,
        max_length=50,
        pattern="^fixedquery$",
        deprecated=True,
    ),
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

`Union` в `Union[str, None]` позволит редактору кода оказать вам лучшую поддержку и найти ошибки.

///

## Расширенная валидация

Добавим дополнительное условие валидации параметра `q` - **длина строки не более 50 символов** (условие проверяется всякий раз, когда параметр `q` не является `None`).

### Импорт `Query` и `Annotated`

Чтобы достичь этого, первым делом нам нужно импортировать:

* `Query` из пакета `fastapi`:

        default=None,
        alias="item-query",
        title="Query string",
        description="Query string for the items to search in the database that have a good match",
        min_length=3,
        max_length=50,
        pattern="^fixedquery$",
        deprecated=True,
    ),
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

{% if people %}
<div class="user-list user-list-center">
{% for user in people.experts[:50] %}

If one or more drives are offline at the start of a PutObject or NewMultipartUpload operation the object will have additional data
protection bits added automatically to provide the regular safety for these objects up to 50% of the number of drives.
This will allow normal write operations to take place on systems that exceed the write tolerance.

                    <mxGeometry relative="1" as="geometry">
                        <mxPoint x="50" y="500" as="sourcePoint"/>
                        <Array as="points">
                            <mxPoint x="50" y="740"/>
                        </Array>
                    </mxGeometry>
                </mxCell>

                    <mxGeometry relative="1" as="geometry">
                        <mxPoint x="50" y="500" as="sourcePoint"/>
                        <Array as="points">
                            <mxPoint x="50" y="740"/>
                        </Array>
                    </mxGeometry>
                </mxCell>