Method index

src/pptx/slide.py:285–293

Map `slide` to its zero-based position in this slide sequence. Raises |ValueError| on *slide* not present.

(self, slide: Slide)

        return slide

    def index(self, slide: Slide) -> int:
        """Map `slide` to its zero-based position in this slide sequence.

        Raises |ValueError| on *slide* not present.
        """
        for idx, this_slide in enumerate(self):
            if this_slide == slide:
                return idx
        raise ValueError("%s is not in slide collection" % slide)


class SlideLayout(_BaseSlide):