Function get_value_or_default

fastapi/utils.py:121–136

Pass items or `DefaultPlaceholder`s by descending priority. The first one to _not_ be a `DefaultPlaceholder` will be returned. Otherwise, the first item (a `DefaultPlaceholder`) will be returned.

(
    first_item: DefaultPlaceholder | DefaultType,
    *extra_items: DefaultPlaceholder | DefaultType,
)

def get_value_or_default(
    first_item: DefaultPlaceholder | DefaultType,
    *extra_items: DefaultPlaceholder | DefaultType,
) -> DefaultPlaceholder | DefaultType:
    """
    Pass items or `DefaultPlaceholder`s by descending priority.

    The first one to _not_ be a `DefaultPlaceholder` will be returned.

    Otherwise, the first item (a `DefaultPlaceholder`) will be returned.
    """
    items = (first_item,) + extra_items
    for item in items:
        if not isinstance(item, DefaultPlaceholder):
            return item
    return first_item