def save(self, page, language, data, change, extra_data=None):
        if extra_data in 'delete':
            return super(FilePlaceholderNode, self).save(
                page,
                language,
                "",
                change
            )
        filename = ''
        if change and data:
            # the image URL is posted if not changed
            if not isinstance(data, UploadedFile):
                return

            filename = get_filename(page, self, data)
            filename = default_storage.save(filename, data)
            return super(FilePlaceholderNode, self).save(
                page,
                language,
                filename,
                change
            )
dataset/ETHPy150Open batiste/django-page-cms/pages/placeholders.py/FilePlaceholderNode.save/swapped operands of `in`