incr/decr return None on server connection fail.

2 files changed, 5 insertions, 2 deletions

diff --git a/ChangeLog b/ChangeLog
index 6fd6648..798d0e2 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+   *  incr/decr return None instead of 0 on server connection failure.
+      Suggested by Ivan Virabyan
+
    *  Supports IPv6 connections using: "inet6:[fd00::32:19f7]:11000".
       Patch by Romain Courteaud
 
diff --git a/memcache.py b/memcache.py
index f729c8c..f674dae 100644
--- a/memcache.py
+++ b/memcache.py
@@ -484,7 +484,7 @@ class Client(local):
         returns 0, not -1.
 
         @param delta: Integer amount to decrement by (should be zero or greater).
-        @return: New value after decrementing.
+        @return: New value after decrementing or None on error.
         @rtype: int
         """
         return self._incrdecr("decr", key, delta)
@@ -493,7 +493,7 @@ class Client(local):
         self.check_key(key)
         server, key = self._get_server(key)
         if not server:
-            return 0
+            return None
         self._statlog(cmd)
         cmd = "%s %s %d" % (cmd, key, delta)
         try: