diff -r 3c3c9ad7c297 Lib/test/test_urllib2.py
--- a/Lib/test/test_urllib2.py	Sun Mar 17 15:49:21 2013 -0700
+++ b/Lib/test/test_urllib2.py	Mon Mar 18 16:23:46 2013 -0700
@@ -64,6 +64,10 @@
         for string, list in tests:
             self.assertEqual(urllib.request.parse_http_list(string), list)
 
+    def test_URLError___str__(self):
+        err = urllib.error.URLError('reason')
+        self.assertIn(err.reason, str(err))
+        
 
 def test_request_headers_dict():
     """
@@ -1550,6 +1554,9 @@
     >>> assert hasattr(err, 'headers')
     >>> err.headers
     'Content-Length: 42'
+    >>> msg = str(err)
+    >>> str(err.code) in msg and err.msg in msg
+    True
     """
 
 def test_main(verbose=None):