diff -r 92039fb68483 Python/pythonrun.c
--- a/Python/pythonrun.c	Thu Aug 15 11:57:19 2013 +0200
+++ b/Python/pythonrun.c	Thu Aug 15 12:17:28 2013 +0200
@@ -503,6 +503,10 @@ Py_Finalize(void)
 
     wait_for_thread_shutdown();
 
+    /* Clear profiling and tracing functions */
+    PyEval_SetTrace(NULL, NULL);
+    PyEval_SetProfile(NULL, NULL);
+
     /* The interpreter is still entirely intact at this point, and the
      * exit funcs may be relying on that.  In particular, if some thread
      * or exit func is still waiting to do an import, the import machinery