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[3.7] Document other performance implication for __slots__ (GH-11974) #11975

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rhettinger merged 1 commit into from
Feb 21, 2019
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[3.7] Document other performance implication for __slots__ (GH-11974) #11975

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1 change: 1 addition & 0 deletions Doc/reference/datamodel.rst
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Expand Up @@ -1725,6 +1725,7 @@ properties) and deny the creation of *__dict__* and *__weakref__*
(unless explicitly declared in *__slots__* or available in a parent.)

The space saved over using *__dict__* can be significant.
Attribute lookup speed can be significantly improved as well.

.. data:: object.__slots__

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