[docs] [issue12982] Document that importing .pyo files needs python -O

[Éric Araujo]

Changes by Éric Araujo <merwok at netwok.org>:


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title: .pyo file can't be imported unless -O is given -> Document that importing .pyo files needs python -O

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue12982>
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