-#!/usr/bin/env python
+#!/usr/bin/env python3
-# Copyright Hans Dembinski 2019
+# Copyright 2019 Hans Dembinski
+#
# Distributed under the Boost Software License, Version 1.0.
# See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt
-from __future__ import print_function
import sys
import glob
import os