python · rhettinger · Feb 21, 2019 · Feb 21, 2019 · Feb 21, 2019
diff --git a/Doc/whatsnew/3.8.rst b/Doc/whatsnew/3.8.rst
@@ -368,7 +368,7 @@ Optimizations
 * Sped-up field lookups in :func:`collections.namedtuple`.  They are now more
  than two times faster, making them the fastest form of instance variable
  lookup in Python. (Contributed by Raymond Hettinger, Pablo Galindo, and
-  Serhiy Storchaka in :issue:`32492`.)
+  Joe Jevnik, Serhiy Storchaka in :issue:`32492`.)

 * The :class:`list` constructor does not overallocate the internal item buffer
  if the input iterable has a known length (the input implements ``__len__``).

diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
@@ -13,7 +13,7 @@
 import types
 import unittest

-from collections import namedtuple, Counter, OrderedDict, _count_elements
+from collections import namedtuple, Counter, OrderedDict, _count_elements, _tuplegetter
 from collections import UserDict, UserString, UserList
 from collections import ChainMap
 from collections import deque
@@ -573,6 +573,15 @@ def test_field_descriptor(self):
        self.assertRaises(AttributeError, Point.x.__set__, p, 33)
        self.assertRaises(AttributeError, Point.x.__delete__, p)

+        class NewPoint(tuple):
+            x = pickle.loads(pickle.dumps(Point.x))
+            y = pickle.loads(pickle.dumps(Point.y))
+
+        np = NewPoint([1, 2])
+
+        self.assertEqual(np.x, 1)
+        self.assertEqual(np.y, 2)
+

 ################################################################################
 ### Abstract Base Classes

diff --git a/Modules/_collectionsmodule.c b/Modules/_collectionsmodule.c
@@ -2440,12 +2440,23 @@ tuplegetter_dealloc(_tuplegetterobject *self)
    Py_TYPE(self)->tp_free((PyObject*)self);
 }

+static PyObject*
+tuplegetter_reduce(_tuplegetterobject *self)
+{
+    return Py_BuildValue("(O(nO))", (PyObject*) Py_TYPE(self), self->index, self->doc);
+}
+

 static PyMemberDef tuplegetter_members[] = {
    {"__doc__",  T_OBJECT, offsetof(_tuplegetterobject, doc), 0},
    {0}
 };

+static PyMethodDef tuplegetter_methods[] = {
+    {"__reduce__", (PyCFunction) tuplegetter_reduce, METH_NOARGS, NULL},
+    {NULL},
+};
+
 static PyTypeObject tuplegetter_type = {
    PyVarObject_HEAD_INIT(NULL, 0)
    "_collections._tuplegetter",                /* tp_name */
@@ -2475,7 +2486,7 @@ static PyTypeObject tuplegetter_type = {
    0,                                          /* tp_weaklistoffset */
    0,                                          /* tp_iter */
    0,                                          /* tp_iternext */
-    0,                                          /* tp_methods */
+    tuplegetter_methods,                        /* tp_methods */
    tuplegetter_members,                        /* tp_members */
    0,                                          /* tp_getset */
    0,                                          /* tp_base */