[issue23359] Speed-up set_lookkey()

[Roundup Robot]

Roundup Robot added the comment:

New changeset cd1e1715becd by Raymond Hettinger in branch 'default':
Issue #23359: Specialize set_lookkey intoa lookup function and an insert function.
https://hg.python.org/cpython/rev/cd1e1715becd

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue23359>
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