code: def export(self, swf, shape, **export_opts):
          
  
          # If `shape` is given as int, find corresponding shape tag.
          if isinstance(shape, Tag):
              shape_tag = shape
          else:
              shapes = [x for x in swf.all_tags_of_type((TagDefineShape, TagDefineSprite)) if x.characterId == shape]
              if len(shapes):
                  shape_tag = shapes[0]
              else:
                  raise Exception("Shape %s not found" % shape)
  
          from swf.movie import SWF
  
          # find a typical use of this shape
          example_place_objects = [x for x in swf.all_tags_of_type(TagPlaceObject) if x.hasCharacter and x.characterId == shape_tag.characterId]
  
          if len(example_place_objects):
              place_object = example_place_objects[0]
              characters = swf.build_dictionary()
              ids_to_export = place_object.get_dependencies()
              ids_exported = set()
              tags_to_export = []
  
              # this had better form a dag!
              while len(ids_to_export):
                  id = ids_to_export.pop()
                  if id in ids_exported or id not in characters:
                      continue
                  tag = characters[id]
                  ids_to_export.update(tag.get_dependencies())
                  tags_to_export.append(tag)
                  ids_exported.add(id)
              tags_to_export.reverse()
              tags_to_export.append(place_object)
          else:
              place_object = TagPlaceObject()
              place_object.hasCharacter = True
              place_object.characterId = shape_tag.characterId
              tags_to_export = [ shape_tag, place_object ]
  
          stunt_swf = SWF()
          stunt_swf.tags = tags_to_export
  
          return super(SingleShapeSVGExporterMixin, self).export(stunt_swf, **export_opts)
docs: Exports the specified shape of the SWF to SVG.
  
          @param swf   The SWF.
          @param shape Which shape to export, either by characterId(int) or as a Tag object.