diff -r 316ee9fff395 -r 5587c490a070 ConfigTreeNode.py
--- a/ConfigTreeNode.py	Tue Oct 02 17:18:09 2018 +0300
+++ b/ConfigTreeNode.py	Tue Oct 02 18:08:49 2018 +0300
@@ -626,7 +626,7 @@
                     self.GetCTRoot().logger.write_warning(XSDSchemaErrorMessage.format(a1=fname, a2=lnum, a3=src))
                 self.MandatoryParams = ("BaseParams", self.BaseParams)
                 basexmlfile.close()
-            except Exception, exc:
+            except Exception as exc:
                 msg = _("Couldn't load confnode base parameters {a1} :\n {a2}").format(a1=ConfNodeName, a2=unicode(exc))
                 self.GetCTRoot().logger.write_error(msg)
                 self.GetCTRoot().logger.write_error(traceback.format_exc())
@@ -643,7 +643,7 @@
                 setattr(self, name, obj)
                 self.CTNParams = (name, obj)
                 xmlfile.close()
-            except Exception, exc:
+            except Exception as exc:
                 msg = _("Couldn't load confnode parameters {a1} :\n {a2}").format(a1=ConfNodeName, a2=unicode(exc))
                 self.GetCTRoot().logger.write_error(msg)
                 self.GetCTRoot().logger.write_error(traceback.format_exc())
@@ -656,7 +656,7 @@
                 pname, ptype = CTNDir.split(NameTypeSeparator)
                 try:
                     self.CTNAddChild(pname, ptype)
-                except Exception, exc:
+                except Exception as exc:
                     msg = _("Could not add child \"{a1}\", type {a2} :\n{a3}\n").format(a1=pname, a2=ptype, a3=unicode(exc))
                     self.GetCTRoot().logger.write_error(msg)
                     self.GetCTRoot().logger.write_error(traceback.format_exc())