def rename_slides(self):
        """
        Assign partnames like ``/ppt/slides/slide9.xml`` to all slides in the
        collection. The name portion is always ``slide``. The number part
        forms a continuous sequence starting at 1 (e.g. 1, 2, 3, ...). The
        extension is always ``.xml``.
        """
        for idx, slide in enumerate(self):
            partname_str = '/ppt/slides/slide%d.xml' % (idx+1)
            slide.partname = PackURI(partname_str)
dataset/ETHPy150Open scanny/python-pptx/pptx/parts/presentation.py/_Slides.rename_slides/original