anyone knows how specify -u together with /usr/bin/env ?

diff --git a/system/LocalSubstrate.inria.py b/system/LocalSubstrate.inria.py
index 836d1d1..4e67e54 100755 (executable)
--- a/system/LocalSubstrate.inria.py
+++ b/system/LocalSubstrate.inria.py
@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/python -u
 # Thierry Parmentelat <thierry.parmentelat@inria.fr>
 # Copyright (C) 2010 INRIA 
 #