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docs: Document __objclass__. Closes #19281.

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Initial patch by Nick Coghlan
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Yury Selivanov 2014-04-08 12:03:07 -04:00
parent 0fceaf45e2
commit d3f918ca44
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Doc/reference/datamodel.rst
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@ -1467,6 +1467,14 @@ class' :attr:`__dict__`.
Called to delete the attribute on an instance *instance* of the owner class.
The :attr:`__objclass__` is interpreted by the :mod:`inspect` module as
specifying the class where this object was defined (setting this appropriately
can assist in runtime introspection of dynamic class attributes). For callables,
it may indicate that an instance of the given type (or a subclass) is expected
or required as the first positional argument (for example, CPython sets this
attribute for unbound methods that are implemented in C).
.. _descriptor-invocation:
Invoking Descriptors