Patch #1550800: make exec a function.
diff --git a/Lib/test/test_operations.py b/Lib/test/test_operations.py
index 67e77aa..8baef4c 100644
--- a/Lib/test/test_operations.py
+++ b/Lib/test/test_operations.py
@@ -30,7 +30,7 @@
              'd.pop(x2)',
              'd.update({x2: 2})']:
     try:
-        exec stmt
+        exec(stmt)
     except RuntimeError:
         print "%s: caught the RuntimeError outside" % (stmt,)
     else: