closes bpo-37420: Handle errors during iteration in os.sched_setaffinity. (GH-14414)

diff --git a/Lib/test/test_posix.py b/Lib/test/test_posix.py
index afa1398..9bdd284 100644
--- a/Lib/test/test_posix.py
+++ b/Lib/test/test_posix.py
@@ -1368,6 +1368,7 @@
         self.assertEqual(posix.sched_getaffinity(0), mask)
         self.assertRaises(OSError, posix.sched_setaffinity, 0, [])
         self.assertRaises(ValueError, posix.sched_setaffinity, 0, [-10])
+        self.assertRaises(ValueError, posix.sched_setaffinity, 0, map(int, "0X"))
         self.assertRaises(OverflowError, posix.sched_setaffinity, 0, [1<<128])
         self.assertRaises(OSError, posix.sched_setaffinity, -1, mask)