From b98dcc1f5307789c3c42af701f81147e240b90ff Mon Sep 17 00:00:00 2001
From: Raymond Hettinger <python@rcn.com>
Date: Fri, 3 May 2013 02:24:15 -0700
Subject: [PATCH] Issue #15535:  Fix pickling of named tuples.

---
 Lib/collections/__init__.py  | 4 ++++
 Lib/test/test_collections.py | 1 +
 Misc/ACKS                    | 1 +
 Misc/NEWS                    | 3 +++
 4 files changed, 9 insertions(+)

diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
index 707c53b3e15..9f55a3e7a37 100644
--- a/Lib/collections/__init__.py
+++ b/Lib/collections/__init__.py
@@ -281,6 +281,10 @@ class {typename}(tuple):
         'Return self as a plain tuple.  Used by copy and pickle.'
         return tuple(self)
 
+    def __getstate__(self):
+        'Exclude the OrderedDict from pickling'
+        return None
+
 {field_defs}
 '''
 
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index 8850e8bc136..af27d22b4ed 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -273,6 +273,7 @@ class TestNamedTuple(unittest.TestCase):
                 q = loads(dumps(p, protocol))
                 self.assertEqual(p, q)
                 self.assertEqual(p._fields, q._fields)
+                self.assertNotIn(b'OrderedDict', dumps(p, protocol))
 
     def test_copy(self):
         p = TestNT(x=10, y=20, z=30)
diff --git a/Misc/ACKS b/Misc/ACKS
index 3b0630abb14..6a0d16fb8c3 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -811,6 +811,7 @@ Trent Mick
 Jason Michalski
 Franck Michea
 Tom Middleton
+Thomas Miedema
 Stan Mihai
 Stefan Mihaila
 Aristotelis Mikropoulos
diff --git a/Misc/NEWS b/Misc/NEWS
index 465ca10ff01..db0c594d5fd 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -47,6 +47,9 @@ Library
 - Issue #17802: Fix an UnboundLocalError in html.parser.  Initial tests by
   Thomas Barlow.
 
+- Issue #15535: Fix namedtuple pickles which were picking up the OrderedDict
+  instead of just the underlying tuple.
+
 - Issue #17192: Restore the patch for Issue #11729 which was ommitted in
   3.3.1 when updating the bundled version of libffi used by ctypes.  Update
   many libffi files that were missed in 3.3.1's update to libffi-3.0.13.