#!/usr/bin/env python3
-# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
-# SPDX-License-Identifier: LGPL-2.1+
-#
-# This file is part of systemd.
-#
-# Copyright 2013, 2017 Zbigniew Jędrzejewski-Szmek
+# SPDX-License-Identifier: LGPL-2.1+
from __future__ import print_function
import collections