[issue20373] Use test.script_helper.assert_python_ok() instead of subprocess.* in test.test_warnings

[Arfrever Frehtes Taifersar Arahesis]

Changes by Arfrever Frehtes Taifersar Arahesis <Arfrever.FTA at GMail.Com>:


Added file: http://bugs.python.org/file33672/python-3.3-test_warnings.py_use_assert_python_ok.patch

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue20373>
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