TEST: assertIsInstance doesn't exist on 2.6.

Author: Scott Sanderson

tests/cloudpickle_test.py

@@ -707,7 +707,7 @@ def test_namedtuple(self):
         t = MyTuple(1, 2, 3)
 
         depickled_t, depickled_MyTuple = pickle_depickle([t, MyTuple])
-        self.assertIsInstance(depickled_t, depickled_MyTuple)
+        self.assertTrue(isinstance(depickled_t, depickled_MyTuple))
 
         self.assertEqual((depickled_t.a, depickled_t.b, depickled_t.c), (1, 2, 3))
         self.assertEqual((depickled_t[0], depickled_t[1], depickled_t[2]), (1, 2, 3))