[docs] [issue15034] tutorial should use best practices in user defined exceptions section

[Alexander Belopolsky]

Changes by Alexander Belopolsky <alexander.belopolsky at gmail.com>:


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title: tutorial should use best practices in user defined execeptions section -> tutorial should use best practices in user defined exceptions section

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue15034>
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