code: def removeTag(self, tag):
          
          method = 'flickr.photos.removeTag'
          tag_id = ''
          try:
              tag_id = tag.id
          except AttributeError:
              raise FlickrError, "Tag object expected"
          _dopost(method, auth=True, photo_id=self.id, tag_id=tag_id)
          self._load_properties()
docs: Remove the tag from the photo must be a Tag object.
          (flickr.photos.removeTag)