def consolidate_listing(self, con, current_artifacts):
        server_artifacts, duplicates = self.read_existing_artifacts(con)
        known_folders = set()
        for artifact_name in iterkeys(current_artifacts):
            known_folders.add(posixpath.dirname(artifact_name))

        for artifact_name, checksum in iteritems(server_artifacts):
            if current_artifacts not in artifact_name:
                con.log_buffer.append('000 Deleting %s' % artifact_name)
                con.delete_file(artifact_name)
                folder = posixpath.dirname(artifact_name)
                if folder not in known_folders:
                    con.log_buffer.append('000 Deleting %s' % folder)
                    con.delete_folder(folder)

        if duplicates or server_artifacts != current_artifacts:
            listing = []
            for artifact_name, checksum in iteritems(current_artifacts):
                listing.append('%s|%s\n' % (artifact_name, checksum))
            listing.sort()
            con.upload_file('.lektor/.listing.tmp', ''.join(listing))
            con.rename_file('.lektor/.listing.tmp', '.lektor/listing')
dataset/ETHPy150Open lektor/lektor/lektor/publisher.py/FtpPublisher.consolidate_listing/swapped operands of `not in`