diff --git a/tools/pylibopenflow/pylib/lavi/pythonize.py b/tools/pylibopenflow/pylib/lavi/pythonize.py
new file mode 100644
index 0000000..3c150aa
--- /dev/null
+++ b/tools/pylibopenflow/pylib/lavi/pythonize.py
@@ -0,0 +1,74 @@
+"""This module generate Python code for LAVI and messenger
+
+(C) Copyright Stanford University
+Date January 2010
+Created by ykk
+"""
+import cpythonize
+
+class msgrules(cpythonize.rules):
+    """Class that specify rules for pythonization of messenger
+
+    (C) Copyright Stanford University
+    Date January 2010
+    Created by ykk
+    """
+    def __init__(self):
+        """Initialize rules
+        """
+        cpythonize.rules.__init__(self)
+        ##Default values for members
+        #Default values for struct
+        ##Macros to exclude
+        self.excluded_macros = ['MESSAGE_HH__']
+        ##Enforce mapping
+        self.enforced_maps['messenger_msg'] = [ ('type','msg_type') ]
+
+class lavirules(msgrules):
+    """Class that specify rules for pythonization of LAVI messages
+
+    (C) Copyright Stanford University
+    Date January 2010
+    Created by ykk
+    """
+    def __init__(self, laviheader):
+        """Initialize rules
+        """
+        msgrules.__init__(self)
+        ##Default values for members
+        
+        #Default values for struct
+        self.struct_default[('lavi_poll_message',
+                             'header')] = ".type = "+str(laviheader.get_value('LAVIT_POLL'))
+        self.struct_default[('lavi_poll_stop_message',
+                             'header')] = ".type = "+str(laviheader.get_value('LAVIT_POLL_STOP'))
+        ##Macros to exclude
+        self.excluded_macros = ['LAVI_MSG_HH']
+        ##Enforce mapping
+        self.enforced_maps['lavi_header'] = [ ('type','lavi_type') ]
+
+class msgpythonizer(cpythonize.pythonizer):
+    """Class that pythonize C messenger messages
+
+    (C) Copyright Stanford University
+    Date January 2010
+    Created by ykk
+    """
+    def __init__(self, msgheader):
+        """Initialize
+        """
+        rules =  msgrules()
+        cpythonize.pythonizer.__init__(self, msgheader, rules)
+        
+class lavipythonizer(cpythonize.pythonizer):
+    """Class that pythonize C messenger messages
+
+    (C) Copyright Stanford University
+    Date December 2009
+    Created by ykk
+    """
+    def __init__(self, msgheader):
+        """Initialize
+        """
+        rules =  lavirules(msgheader)
+        cpythonize.pythonizer.__init__(self, msgheader, rules)