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Update weakref.rst (GH-14098)

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Géry Ogam 2019-06-15 13:33:23 +02:00 • committed by Miss Islington (bot)
parent 0237265e82
commit f475729a71
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Doc/library/weakref.rst
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@ -65,8 +65,8 @@ exposed by the :mod:`weakref` module for the benefit of advanced uses.
Not all objects can be weakly referenced; those objects which can include class
instances, functions written in Python (but not in C), instance methods, sets,
frozensets, some :term:`file objects <file object>`, :term:`generator`\s, type
objects, sockets, arrays, deques, regular expression pattern objects, and code
frozensets, some :term:`file objects <file object>`, :term:`generators <generator>`,
type objects, sockets, arrays, deques, regular expression pattern objects, and code
objects.
.. versionchanged:: 3.2
@ -80,9 +80,10 @@ support weak references but can add support through subclassing::
obj = Dict(red=1, green=2, blue=3) # this object is weak referenceable
.. impl-detail::
Other built-in types such as :class:`tuple` and :class:`int` do not support weak
references even when subclassed (This is an implementation detail and may be
different across various Python implementations.).
references even when subclassed.
Extension types can easily be made to support weak references; see
:ref:`weakref-support`.