--- a/tests/f	Mon Nov 09 09:58:44 2020 -0800
+++ b/tests/f	Fri Nov 06 13:58:59 2020 -0800
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 """
 Utility for inspecting files in various ways.