diff --git a/python/oct10/Tables/main.py b/python/oct10/Tables/main.py
index f456d09..79a2d56 100644
--- a/python/oct10/Tables/main.py
+++ b/python/oct10/Tables/main.py
@@ -148,7 +148,7 @@ def testLevel1():
     # so it will raise a custom exception.
     error = None
     try:
-        col = table.getCol(3)
+        _col = table.getCol(3)
     except Exception as e:
         error = str(e)
     assert error == "Col 3 is out of range"
@@ -186,7 +186,7 @@ def testLevel2():
     # so it will raise a custom exception.
     error = None
     try:
-        row = table.getRow(10)
+        _row = table.getRow(10)
     except Exception as e:
         error = str(e)
     assert error == "Row 10 is out of range"
@@ -199,7 +199,7 @@ def testLevel2():
     # there is no such header, so it will raise a custom exception.
     error = None
     try:
-        i = table.getHeaderIndex("Missing")
+        _i = table.getHeaderIndex("Missing")
     except Exception as e:
         error = str(e)
     # assert(error == 'No such header: Missing')