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| author | Georg Brandl <georg@python.org> | 2009-10-21 07:15:59 +0000 |
|---|---|---|
| committer | Georg Brandl <georg@python.org> | 2009-10-21 07:15:59 +0000 |
| commit | cf842ad418fa2b4b820e9f15a69dc5dd04dbd546 (patch) | |
| tree | 4bed86677c2e41b3856b3df5654fd2840bca38a4 | |
| parent | 9bd246bba9410abca2d7ba9387d0b93bb6c9ae2c (diff) | |
| download | cpython-git-cf842ad418fa2b4b820e9f15a69dc5dd04dbd546.tar.gz | |
#7170: fix explanation about non-weakrefable builtin types.
| -rw-r--r-- | Doc/library/weakref.rst | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Doc/library/weakref.rst b/Doc/library/weakref.rst index a1a3314ffb..c800ecd31e 100644 --- a/Doc/library/weakref.rst +++ b/Doc/library/weakref.rst @@ -76,6 +76,10 @@ 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:`long` 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`. |