1 files changed, 11 insertions, 0 deletions
diff --git a/python/google/protobuf/message.py b/python/google/protobuf/message.py
index f8398474..54cf35ea 100755
--- a/python/google/protobuf/message.py
+++ b/python/google/protobuf/message.py
@@ -67,6 +67,11 @@ class Message(object):
 
   DESCRIPTOR = None
 
+  def __deepcopy__(self, memo=None):
+    clone = type(self)()
+    clone.MergeFrom(self)
+    return clone
+
   def __eq__(self, other_msg):
     raise NotImplementedError
 
@@ -74,9 +79,15 @@ class Message(object):
     # Can't just say self != other_msg, since that would infinitely recurse. :)
     return not self == other_msg
 
+  def __hash__(self):
+    raise TypeError('unhashable object')
+
   def __str__(self):
     raise NotImplementedError
 
+  def __unicode__(self):
+    raise NotImplementedError
+
   def MergeFrom(self, other_msg):
     """Merges the contents of the specified message into current message.