def _create_alteration_element(self): accid = mod.accid_() accid.id = self._idgen() if self.glyph['form'] is "sharp": accid.attributes = {"accid": "s"} elif self.glyph['form'] is "flat": accid.attributes = {"accid": "f"} zone = self._create_zone_element() note.facs = zone.id return accid