diff -r 94edc0f0002f Lib/test/test_statistics.py
--- a/Lib/test/test_statistics.py	Tue Feb 25 16:46:41 2014 -0800
+++ b/Lib/test/test_statistics.py	Wed Feb 26 18:42:53 2014 +0800
@@ -9,7 +9,6 @@
 import math
 import random
 import sys
-import types
 import unittest
 
 from decimal import Decimal
@@ -998,7 +997,7 @@
         with decimal.localcontext(decimal.ExtendedContext):
             self.assertTrue(math.isnan(statistics._sum(data)))
 
-    def test_decimal_mismatched_infs_to_nan(self):
+    def test_decimal_mismatched_infs_raises(self):
         # Test adding Decimal INFs with opposite sign raises InvalidOperation.
         inf = Decimal('inf')
         data = [1, 2, inf, 3, -inf, 4]