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gh-96397: Document that attributes need not be identifiers (#96454) 

Co-authored-by: C.A.M. Gerlach <CAM.Gerlach@Gerlach.CAM>
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Jeff Allen 2022-09-30 00:02:27 +01:00 committed by GitHub
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11
Doc/glossary.rst
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@ -136,10 +136,17 @@ Glossary
:exc:`StopAsyncIteration` exception. Introduced by :pep:`492`.
attribute
A value associated with an object which is referenced by name using
dotted expressions. For example, if an object *o* has an attribute
A value associated with an object which is usually referenced by name
using dotted expressions.
For example, if an object *o* has an attribute
*a* it would be referenced as *o.a*.
It is possible to give an object an attribute whose name is not an
identifier as defined by :ref:`identifiers`, for example using
:func:`setattr`, if the object allows it.
Such an attribute will not be accessible using a dotted expression,
and would instead need to be retrieved with :func:`getattr`.
awaitable
An object that can be used in an :keyword:`await` expression. Can be
a :term:`coroutine` or an object with an :meth:`__await__` method.

8
Doc/library/functions.rst
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@ -397,6 +397,7 @@ are always available. They are listed here in alphabetical order.
string. The string must be the name of one of the object's attributes. The
function deletes the named attribute, provided the object allows it. For
example, ``delattr(x, 'foobar')`` is equivalent to ``del x.foobar``.
*name* need not be a Python identifier (see :func:`setattr`).
.. _func-dict:
@ -738,6 +739,7 @@ are always available. They are listed here in alphabetical order.
value of that attribute. For example, ``getattr(x, 'foobar')`` is equivalent to
``x.foobar``. If the named attribute does not exist, *default* is returned if
provided, otherwise :exc:`AttributeError` is raised.
*name* need not be a Python identifier (see :func:`setattr`).
.. note::
@ -1582,6 +1584,12 @@ are always available. They are listed here in alphabetical order.
object allows it. For example, ``setattr(x, 'foobar', 123)`` is equivalent to
``x.foobar = 123``.
*name* need not be a Python identifier as defined in :ref:`identifiers`
unless the object chooses to enforce that, for example in a custom
:meth:`~object.__getattribute__` or via :attr:`~object.__slots__`.
An attribute whose name is not an identifier will not be accessible using
the dot notation, but is accessible through :func:`getattr` etc..
.. note::
Since :ref:`private name mangling <private-name-mangling>` happens at