Be sure to close the file. 2 places were deleting the file, so it was probably

fine, but the last change may be required for the test to pass on Windows.
Should we always close the mmap too?

Lib/test/test_mmap.py

@@ -161,6 +161,7 @@ class MmapTests(unittest.TestCase):
             pass
         else:
             self.fail("Able to resize readonly memory map")
+        f.close()
         del m, f
         self.assertEqual(open(TESTFN, "rb").read(), 'a'*mapsize,
                "Readonly memory map data file was modified")
@@ -217,6 +218,7 @@ class MmapTests(unittest.TestCase):
                "Copy-on-write test data file should not be modified.")
         # Ensuring copy-on-write maps cannot be resized
         self.assertRaises(TypeError, m.resize, 2*mapsize)
+        f.close()
         del m, f
 
         # Ensuring invalid access parameter raises exception
@@ -434,7 +436,7 @@ class MmapTests(unittest.TestCase):
         f = open(TESTFN, "rb")
         m = mmap.mmap(f.fileno(), mapsize, prot=mmap.PROT_READ)
         self.assertRaises(TypeError, m.write, "foo")
-
+        f.close()
 
     def test_error(self):
         self.assert_(issubclass(mmap.error, EnvironmentError))