[issue30190] unittest's assertAlmostEqual improved error message

[Giampaolo Rodola']

Changes by Giampaolo Rodola' <g.rodola at gmail.com>:


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title: unittest's assertAlmostEqual should show the difference -> unittest's assertAlmostEqual improved error message

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30190>
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