Fix twisted version check.

diff --git a/tornado/test/netutil_test.py b/tornado/test/netutil_test.py
index ca594c0967cec2bccaac03f3d418866b42fd12c8..53c84c2b95b8ec4ac45a6b0114dbeda318f18705 100644 (file)
--- a/tornado/test/netutil_test.py
+++ b/tornado/test/netutil_test.py
@@ -65,7 +65,7 @@ class CaresResolverTest(AsyncTestCase, _ResolverTestMixin):
 
 
 @unittest.skipIf(twisted is None, "twisted module not present")
-@unittest.skipIf(twisted.__version__ < "12.1", "old version of twisted")
+@unittest.skipIf(getattr(twisted, '__version__', '0.0') < "12.1", "old version of twisted")
 class TwistedResolverTest(AsyncTestCase, _ResolverTestMixin):
     def setUp(self):
         super(TwistedResolverTest, self).setUp()