--- a/editors/CodeFileEditor.py	Thu Oct 04 11:25:42 2018 +0300
+++ b/editors/CodeFileEditor.py	Thu Oct 04 12:07:16 2018 +0300
@@ -30,6 +30,7 @@
 import wx.grid
 import wx.stc as stc
 import wx.lib.buttons
+from six.moves import xrange
 
 from plcopen.plcopen import TestTextElement
 from plcopen.structures import TestIdentifier, IEC_KEYWORDS, DefaultType