issue 6275
Add an "exc_value" attribute to the _AssertRaisesContext context manager in the unittest package. This allows further tests on the exception that was raised after the context manager exits.
diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst
index 25d792d..a2d4478 100644
--- a/Doc/library/unittest.rst
+++ b/Doc/library/unittest.rst
@@ -888,6 +888,10 @@
with self.failUnlessRaises(some_error_class):
do_something()
+ The context manager will store the caught exception object in its
+ :attr:`exc_value` attribute. This can be useful if the intention
+ is to perform additional checks on the exception raised.
+
.. versionchanged:: 2.7
Added the ability to use :meth:`assertRaises` as a context manager.