convert shebang lines: python -> python3
diff --git a/Lib/uu.py b/Lib/uu.py
index d70f0e6..c917cdd 100755
--- a/Lib/uu.py
+++ b/Lib/uu.py
@@ -1,4 +1,4 @@
-#! /usr/bin/env python
+#! /usr/bin/env python3
 
 # Copyright 1994 by Lance Ellinghouse
 # Cathedral City, California Republic, United States of America.