diff -r 67f0d7ff7d3e -r ce1bfd04b3f6 plcopen/BlockInstanceCollector.py
--- a/plcopen/BlockInstanceCollector.py	Wed Feb 28 16:10:05 2018 +0100
+++ b/plcopen/BlockInstanceCollector.py	Thu Mar 01 09:41:12 2018 +0100
@@ -4,8 +4,8 @@
 # See COPYING file for copyrights details.
 
 from __future__ import absolute_import
+from collections import OrderedDict, namedtuple
 from plcopen.XSLTModelQuery import XSLTModelQuery, _StringValue, _BoolValue, _translate_args
-from collections import OrderedDict, namedtuple
 
 # -------------------------------------------------------------------------------
 #           Helpers object for generating pou block instances list