Fixed English in error message.

diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py
index cef05678f68e9aabe753ca052133bc9555b4854b..6bbc55fbc6edacceb694220bc6b6aaa66cc48b71 100644 (file)
--- a/Lib/unittest/case.py
+++ b/Lib/unittest/case.py
@@ -128,7 +128,7 @@ class _AssertRaisesContext(object):
         return True
 
 def _sentinel(*args, **kwargs):
-    raise AssertionError('Should never called')
+    raise AssertionError('Should never be called')
 
 class TestCase(object):
     """A class whose instances are single test cases.