Mirror
/
cpython
mirror of https://github.com/python/cpython
4
1
Fork 0
Code Issues Releases Wiki Activity

Issue #14954: Clarify the interaction of weak references and garbage collection. 

Patch by Ethan Furman.
This commit is contained in:
Antoine Pitrou 2012-08-21 00:07:35 +02:00
parent 77ebfccd4d 9439f04b9a
commit 609939e22f
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
Doc/library/weakref.rst
View File

@ -24,7 +24,10 @@ by a weak reference.
A weak reference to an object is not enough to keep the object alive: when the
only remaining references to a referent are weak references,
:term:`garbage collection` is free to destroy the referent and reuse its memory
for something else. A primary use for weak references is to implement caches or
for something else. However, until the object is actually destroyed the weak
reference may return the object even if there are no strong references to it.
A primary use for weak references is to implement caches or
mappings holding large objects, where it's desired that a large object not be
kept alive solely because it appears in a cache or mapping.