[docs] [issue16851] Hint about correct ismethod and isfunction usage

[Éric Araujo]

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


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title: ismethod and isfunction methods error -> Hint about correct ismethod and isfunction usage

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue16851>
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