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bpo-36743: __get__ is sometimes called without the owner argument #12992

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Merged
rhettinger merged 5 commits into from
Aug 29, 2019
Merged

bpo-36743: __get__ is sometimes called without the owner argument #12992

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cd4c1cf
bpo-36743: __get__ is sometimes called without the owner argument
rhettinger Apr 28, 2019
755f766
Clarify caller and callee responsibilities in practice
rhettinger Aug 29, 2019
325e6c4
Fix standard library descriptors that unnecessarily required a cls ar…
rhettinger Aug 29, 2019
5434a76
bpo-12077: Cross-reference __set__ to the data descriptor docs
rhettinger Aug 29, 2019
f312558
Fix reference link
rhettinger Aug 29, 2019
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bpo-36743: __get__ is sometimes called without the owner argument
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@rhettinger
rhettinger committed Aug 29, 2019
commit cd4c1cf5cfc966d394a8b084acd43a00ea24cda3
13 changes: 7 additions & 6 deletions Doc/reference/datamodel.rst
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Expand Up @@ -1620,12 +1620,13 @@ class' :attr:`~object.__dict__`.

.. method:: object.__get__(self, instance, owner)

Called to get the attribute of the owner class (class attribute access) or of an
instance of that class (instance attribute access). *owner* is always the owner
class, while *instance* is the instance that the attribute was accessed through,
or ``None`` when the attribute is accessed through the *owner*. This method
should return the (computed) attribute value or raise an :exc:`AttributeError`
exception.
Called to get the attribute of the owner class (class attribute access) or
of an instance of that class (instance attribute access). The optional
*owner* argument is the owner class, while *instance* is the instance that
the attribute was accessed through, or ``None`` when the attribute is
accessed through the *owner*. Note that callers are allowed to omit the
*owner* argument when it isn't needed. This method should return the
(computed) attribute value or raise an :exc:`AttributeError` exception.


.. method:: object.__set__(self, instance, value)
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