diff -Nru mpi4py-1.3+hg20120611/debian/changelog mpi4py-1.3+hg20120611/debian/changelog
--- mpi4py-1.3+hg20120611/debian/changelog	2012-06-12 01:51:02.000000000 +0000
+++ mpi4py-1.3+hg20120611/debian/changelog	2012-10-23 14:25:34.000000000 +0000
@@ -1,3 +1,10 @@
+mpi4py (1.3+hg20120611-2) unstable; urgency=low
+
+  * Cherry-picked patch from upstream for python3.3 compatibility (failing
+    unittests) (Closes: #691244)
+
+ -- Yaroslav Halchenko <debian@onerussian.com>  Tue, 23 Oct 2012 10:23:29 -0400
+
 mpi4py (1.3+hg20120611-1) unstable; urgency=low
 
   [ Bradley M. Froehle ]
diff -Nru mpi4py-1.3+hg20120611/debian/patches/series mpi4py-1.3+hg20120611/debian/patches/series
--- mpi4py-1.3+hg20120611/debian/patches/series	2012-06-12 01:51:02.000000000 +0000
+++ mpi4py-1.3+hg20120611/debian/patches/series	2012-10-23 14:25:34.000000000 +0000
@@ -1,2 +1,3 @@
 up_no_modlibs
 cython_version_check.patch
+up_test_win_python3.3.patch
diff -Nru mpi4py-1.3+hg20120611/debian/patches/up_test_win_python3.3.patch mpi4py-1.3+hg20120611/debian/patches/up_test_win_python3.3.patch
--- mpi4py-1.3+hg20120611/debian/patches/up_test_win_python3.3.patch	1970-01-01 00:00:00.000000000 +0000
+++ mpi4py-1.3+hg20120611/debian/patches/up_test_win_python3.3.patch	2012-10-23 14:25:34.000000000 +0000
@@ -0,0 +1,43 @@
+Author: Lisandro Dalcin <dalcinl@gmail.com>
+Subject: Python 3.3 compatibility patch from upstream
+
+Origin: upstream
+Bug-Debian: http://bugs.debian.org/691244
+Applied-Upstream:  https://code.google.com/p/mpi4py/source/detail?r=330fde6ffccbdf68f5e3bdd0378bf4d6cfa82f50
+Last-Update: 2012-10-23
+
+diff --git a/test/test_win.py b/test/test_win.py
+--- a/test/test_win.py
++++ b/test/test_win.py
+@@ -25,7 +25,10 @@
+         if type(self.memory).__name__ == 'buffer':
+             self.assertEqual(sys.getrefcount(self.memory), refcnt+1)
+         else:
+-            self.assertEqual(sys.getrefcount(self.memory), refcnt)
++            if sys.version_info[:3] < (3, 3):
++                self.assertEqual(sys.getrefcount(self.memory), refcnt)
++            else:
++                self.assertEqual(sys.getrefcount(self.memory), refcnt+1)
+ 
+     def tearDown(self):
+         refcnt = sys.getrefcount(self.memory)
+@@ -33,7 +36,10 @@
+         if type(self.memory).__name__ == 'buffer':
+             self.assertEqual(sys.getrefcount(self.memory), refcnt-1)
+         else:
+-            self.assertEqual(sys.getrefcount(self.memory), refcnt)
++            if sys.version_info[:3] < (3, 3):
++                self.assertEqual(sys.getrefcount(self.memory), refcnt)
++            else:
++                self.assertEqual(sys.getrefcount(self.memory), refcnt-1)
+         if self.mpi_memory:
+             MPI.Free_mem(self.mpi_memory)
+ 
+@@ -46,7 +52,6 @@
+         self.assertEqual(dunit, 1)
+         self.assertEqual(base,  pointer)
+ 
+-
+     def testAttributes(self):
+         cgroup = self.COMM.Get_group()
+         wgroup = self.WIN.Get_group()