Patch #1550800: make exec a function.
diff --git a/Lib/test/test_dis.py b/Lib/test/test_dis.py
index c31092c..f9a6a07 100644
--- a/Lib/test/test_dis.py
+++ b/Lib/test/test_dis.py
@@ -135,7 +135,7 @@
         def func(count):
             namespace = {}
             func = "def foo():\n " + "".join(["\n "] * count + ["spam\n"])
-            exec func in namespace
+            exec(func, namespace)
             return namespace['foo']
 
         # Test all small ranges