From ff8c1e5aceb7737d424610dd1adeed773b84b8db Mon Sep 17 00:00:00 2001 From: Georg Brandl Date: Wed, 21 Oct 2009 07:17:48 +0000 Subject: Merged revisions 75580 via svnmerge from svn+ssh://pythondev@svn.python.org/python/trunk ........ r75580 | georg.brandl | 2009-10-21 09:15:59 +0200 (Mi, 21 Okt 2009) | 1 line #7170: fix explanation about non-weakrefable builtin types. ........ --- Doc/library/weakref.rst | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Doc/library/weakref.rst b/Doc/library/weakref.rst index dcc5bf3..06a432d 100644 --- a/Doc/library/weakref.rst +++ b/Doc/library/weakref.rst @@ -72,6 +72,10 @@ support weak references but can add support through subclassing:: obj = Dict(red=1, green=2, blue=3) # this object is weak referenceable +Other built-in types such as :class:`tuple` and :class:`int` do not support +weak references even when subclassed (those types implemented as a +:ctype:`PyVarObject`). + Extension types can easily be made to support weak references; see :ref:`weakref-support`. -- cgit v0.12