Fixing - Issue7026 - RuntimeError: dictionary changed size during iteration. Patch by flox
diff --git a/Lib/test/test_syntax.py b/Lib/test/test_syntax.py
index 2118c62..c6730cd 100644
--- a/Lib/test/test_syntax.py
+++ b/Lib/test/test_syntax.py
@@ -552,7 +552,11 @@
 def test_main():
     test_support.run_unittest(SyntaxTestCase)
     from test import test_syntax
-    test_support.run_doctest(test_syntax, verbosity=True)
+    with warnings.catch_warnings():
+        # Silence Py3k warning
+        warnings.filterwarnings("ignore", "backquote not supported",
+                                SyntaxWarning)
+        test_support.run_doctest(test_syntax, verbosity=True)
 
 if __name__ == "__main__":
     test_main()