Whitespace normalization.
diff --git a/Lib/test/test_set.py b/Lib/test/test_set.py
index 49bdec3..23b4f11 100644
--- a/Lib/test/test_set.py
+++ b/Lib/test/test_set.py
@@ -473,7 +473,7 @@
         set.__init__(self, iterable)
 
 class TestSetSubclassWithKeywordArgs(TestSet):
-    
+
     def test_keywords_in_subclass(self):
         'SF bug #1486663 -- this used to erroneously raise a TypeError'
         SetSubclassWithKeywordArgs(newarg=1)
@@ -1460,7 +1460,7 @@
     test_classes = (
         TestSet,
         TestSetSubclass,
-        TestSetSubclassWithKeywordArgs,        
+        TestSetSubclassWithKeywordArgs,
         TestFrozenSet,
         TestFrozenSetSubclass,
         TestSetOfSets,