Whitespace normalization.
diff --git a/Lib/test/test_parser.py b/Lib/test/test_parser.py
index bddec16..4bd2943 100644
--- a/Lib/test/test_parser.py
+++ b/Lib/test/test_parser.py
@@ -199,7 +199,7 @@
                         yield x
             else:
                 yield tree
-            
+
         terminals = list(walk(st2))
         self.assertEqual([
             (1, 'def', 1, 0),