Method index

src/pptx/slide.py:380–388

Return zero-based index of `slide_layout` in this collection. Raises `ValueError` if `slide_layout` is not present in this collection.

(self, slide_layout: SlideLayout)

        return default

    def index(self, slide_layout: SlideLayout) -> int:
        """Return zero-based index of `slide_layout` in this collection.

        Raises `ValueError` if `slide_layout` is not present in this collection.
        """
        for idx, this_layout in enumerate(self):
            if slide_layout == this_layout:
                return idx
        raise ValueError("layout not in this SlideLayouts collection")

    def remove(self, slide_layout: SlideLayout) -> None:
        """Remove `slide_layout` from the collection.