@property
    def _master_placeholder(self):
        inheritee_ph_type = {
            PP_PLACEHOLDER.BODY:         PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.CHART:        PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.BITMAP:       PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.CENTER_TITLE: PP_PLACEHOLDER.TITLE,
            PP_PLACEHOLDER.ORG_CHART:    PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.DATE:         PP_PLACEHOLDER.DATE,
            PP_PLACEHOLDER.FOOTER:       PP_PLACEHOLDER.FOOTER,
            PP_PLACEHOLDER.MEDIA_CLIP:   PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.OBJECT:       PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.PICTURE:      PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.SLIDE_NUMBER: PP_PLACEHOLDER.SLIDE_NUMBER,
            PP_PLACEHOLDER.SUBTITLE:     PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.TABLE:        PP_PLACEHOLDER.BODY,
            PP_PLACEHOLDER.TITLE:        PP_PLACEHOLDER.TITLE,
        }[self.ph_type]
        slide_master = self._slide_master
        master_placeholder = slide_master.placeholders.get(
            inheritee_ph_type, None
        )
        return master_placeholder
The master placeholder shape this layout placeholder inherits from.
dataset/ETHPy150Open scanny/python-pptx/pptx/shapes/placeholder.py/LayoutPlaceholder._master_placeholder