[issue7892] [patch] refactor "test_dict.py" using new assertRaises context manager.

[Florent Xicluna]

Changes by Florent Xicluna <laxyf at yahoo.fr>:


Removed file: http://bugs.python.org/file16187/patch_dict_assertRaises.diff

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue7892>
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