convert shebang lines: python -> python3
diff --git a/Lib/tarfile.py b/Lib/tarfile.py
index e28b1c7..8684493 100644
--- a/Lib/tarfile.py
+++ b/Lib/tarfile.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 #-------------------------------------------------------------------
 # tarfile.py
 #-------------------------------------------------------------------