--- a/plcopen/plcopen.py	Mon Oct 23 18:25:45 2017 +0300
+++ b/plcopen/plcopen.py	Wed Oct 25 13:50:26 2017 +0300
@@ -23,6 +23,8 @@
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 
+
+from __future__ import absolute_import
 from types import *
 import re
 from collections import OrderedDict