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Merge with 3.5.

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Serhiy Storchaka 2017-01-11 20:17:34 +02:00
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Doc/library/unittest.mock.rst
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@ -1831,6 +1831,9 @@ sentinel
the same attribute will always return the same object. The objects
returned have a sensible repr so that test failure messages are readable.
The ``sentinel`` attributes don't preserve their identity when they are
:mod:`copied <copy>` or :mod:`pickled <pickle>`.
Sometimes when testing you need to test that a specific object is passed as an
argument to another method, or returned. It can be common to create named
sentinel objects to test this. :data:`sentinel` provides a convenient way of