diff options
| author | Nick Coghlan <ncoghlan@gmail.com> | 2013-09-22 11:26:30 (GMT) |
|---|---|---|
| committer | Nick Coghlan <ncoghlan@gmail.com> | 2013-09-22 11:26:30 (GMT) |
| commit | be57ab8a34d364112e2e365d1d42bf84236abbc0 (patch) | |
| tree | d716249fc70cb08f60a948d97d153f75124d0dcd /Doc/whatsnew/3.4.rst | |
| parent | a2838878faa5d661914d48350cb3a6a02d925465 (diff) | |
| download | cpython-be57ab8a34d364112e2e365d1d42bf84236abbc0.zip cpython-be57ab8a34d364112e2e365d1d42bf84236abbc0.tar.gz cpython-be57ab8a34d364112e2e365d1d42bf84236abbc0.tar.bz2 | |
Close #19047: weakref doc cleanups
- be clear finalizers survive automatically
- update for PEP 442 __del__ changes
- mention module cleanup changes and weakref.finalize in What's New
Diffstat (limited to 'Doc/whatsnew/3.4.rst')
| -rw-r--r-- | Doc/whatsnew/3.4.rst | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst index 90e4685..60dd94d 100644 --- a/Doc/whatsnew/3.4.rst +++ b/Doc/whatsnew/3.4.rst @@ -153,6 +153,10 @@ With it, objects with :meth:`__del__` methods, as well as generators with :keyword:`finally` clauses, can be finalized when they are part of a reference cycle. +As part of this change, module globals are no longer forcibly set to +:const:`None` during interpreter shutdown, instead relying on the normal +operation of the cyclic garbage collector. + .. seealso:: :pep:`442` - Safe object finalization @@ -416,9 +420,12 @@ weakref ------- New :class:`~weakref.WeakMethod` class simulates weak references to bound -methods. +methods. (Contributed by Antoine Pitrou in :issue:`14631`.) -(Contributed by Antoine Pitrou in :issue:`14631`.) +New :class:`~weakref.finalize` class makes it possible to register a callback +to be invoked when an object is garbage collected, without needing to +carefully manage the lifecycle of the weak reference itself. (Contributed by +Richard Oudkerk in :issue:`15528`) xml.etree |