Fixed English in error message.

diff --git a/Lib/unittest/case.py b/Lib/unittest/case.py
index f99c4e5312a5c905d8f9501ac3c18a68b00b0897..225a1431ca859366a402df8aa6798a6fe9419c78 100644 (file)
--- a/Lib/unittest/case.py
+++ b/Lib/unittest/case.py
@@ -130,7 +130,7 @@ class _BaseTestCaseContext:
         raise self.test_case.failureException(msg)
 
 def _sentinel(*args, **kwargs):
-    raise AssertionError('Should never called')
+    raise AssertionError('Should never be called')
 
 class _AssertRaisesBaseContext(_BaseTestCaseContext):