[issue30671] dict: improve lookup function

[Dmitry Rubanovich]

Dmitry Rubanovich added the comment:

Changing the title, to remove "simplify", since the discussion revealed that the potential improvement would have to be treated as a special case and, therefore, would not simplify the code.

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title: dict: simplify and improve lookup function -> dict: improve lookup function

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue30671>
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