[docs] [issue16714] Raise exceptions, don't throw

[Roundup Robot]

Roundup Robot added the comment:

New changeset 0a5c5399f638 by Andrew Svetlov in branch '2.7':
revert comment wording (#16714)
http://hg.python.org/cpython/rev/0a5c5399f638

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16714>
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