It took me longer than I expected to figure out why a random class
I dealt with didn't support weak references. I believe this addition
will make the __slots__/weakref interaction more discoverable to people
having troubles with this. (Before this patch __slots__ was not
mentioned in weakref documentation even once).
Co-authored-by: Łukasz Langa <lukasz@langa.pl>
The doccumentation at https://docs.python.org/3.10/library/weakref.html cautions that the `WeakKeyDictionary` and `WeakValueDictionary` are susceptible to the problem of dictionary mutation during iteration.
These notes present the user with a problem that has no easy solution.
I dug into the implementation and found that fortunately, Antoine Pitrou already addressed this challenge (10 years ago!) by introducing an `_IterationGuard` context manager to the implementation, which delays mutation while an iteration is in progress.
I asked for confirmation and @pitrou agreed that these notes could be removed:
c1baa601e2 (commitcomment-39514438)
Reflecting changes to the code, removed weakref.ReferenceError from weakref.rst and exceptions.rst.
Issue submitter provided evidence that the `weakref.ReferenceError` alias for `ReferenceError` was removed from the code in 2007. Working with @gvanrossum at PyCascades CPython sprint we looked at the code and confirmed that `weakref.ReferenceError` was no longer in `weakref.py`.
Based on that analysis I removed references `weakref.ReferenceError` from the two documents where it was still being referenced: `weakref.rst` and `exceptions.rst`.
https://bugs.python.org/issue38374
Also add a missing word to gc entry, and delete a now-obsolete doc note
in the weakref __callback__ docs. (Opened an issue for rewriting
the section that compares finalizers and __del__ method.)
weakref callbacks.
This is 2e446e87ac5b except that collections/__init__.py has been
modified to import proxy from _weakref instead of weakref. This
eliminates an import cycle which seems to cause a problem on Unix but
not Windows.
svn+ssh://pythondev@svn.python.org/python/trunk
........
r79060 | collin.winter | 2010-03-18 14:54:01 -0700 (Thu, 18 Mar 2010) | 4 lines
Add support for weak references to code objects. This will be used by an optimization in the incoming Python 3 JIT.
Patch by Reid Kleckner!
........
svn+ssh://pythondev@svn.python.org/python/trunk
........
r75149 | gregory.p.smith | 2009-09-29 16:56:31 -0500 (Tue, 29 Sep 2009) | 3 lines
Mention issue6972 in extractall docs about overwriting things outside of
the supplied path.
........
r75260 | andrew.kuchling | 2009-10-05 16:24:20 -0500 (Mon, 05 Oct 2009) | 1 line
Wording fix
........
r75261 | andrew.kuchling | 2009-10-05 16:24:35 -0500 (Mon, 05 Oct 2009) | 1 line
Fix narkup
........
r75262 | andrew.kuchling | 2009-10-05 16:25:03 -0500 (Mon, 05 Oct 2009) | 1 line
Document 'skip' parameter to constructor
........
r75263 | andrew.kuchling | 2009-10-05 16:25:35 -0500 (Mon, 05 Oct 2009) | 1 line
Note side benefit of socket.create_connection()
........
r75265 | andrew.kuchling | 2009-10-05 17:31:11 -0500 (Mon, 05 Oct 2009) | 1 line
Reword sentence
........
r75266 | andrew.kuchling | 2009-10-05 17:32:48 -0500 (Mon, 05 Oct 2009) | 1 line
Use standard comma punctuation; reword some sentences in the docs
........
r75267 | andrew.kuchling | 2009-10-05 17:42:56 -0500 (Mon, 05 Oct 2009) | 1 line
Backport r73983: Document the thousands separator.
........
r75292 | benjamin.peterson | 2009-10-08 22:11:36 -0500 (Thu, 08 Oct 2009) | 1 line
death to old CVS keyword
........
r75300 | benjamin.peterson | 2009-10-09 16:48:14 -0500 (Fri, 09 Oct 2009) | 1 line
fix some coding style
........
r75376 | benjamin.peterson | 2009-10-11 20:26:07 -0500 (Sun, 11 Oct 2009) | 1 line
platform we don't care about
........
r75405 | neil.schemenauer | 2009-10-14 12:17:14 -0500 (Wed, 14 Oct 2009) | 4 lines
Issue #1754094: Improve the stack depth calculation in the compiler.
There should be no other effect than a small decrease in memory use.
Patch by Christopher Tur Lesniewski-Laas.
........
r75429 | benjamin.peterson | 2009-10-14 20:47:28 -0500 (Wed, 14 Oct 2009) | 1 line
pep8ify if blocks
........
r75430 | benjamin.peterson | 2009-10-14 20:49:37 -0500 (Wed, 14 Oct 2009) | 1 line
use floor division and add a test that exercises the tabsize codepath
........
r75431 | benjamin.peterson | 2009-10-14 20:56:25 -0500 (Wed, 14 Oct 2009) | 1 line
change test to what I intended
........
r75432 | benjamin.peterson | 2009-10-14 22:05:39 -0500 (Wed, 14 Oct 2009) | 1 line
some cleanups
........
r75433 | benjamin.peterson | 2009-10-14 22:06:55 -0500 (Wed, 14 Oct 2009) | 1 line
make inspect.isabstract() always return a boolean; add a test for it, too #7069
........
r75437 | benjamin.peterson | 2009-10-15 10:44:46 -0500 (Thu, 15 Oct 2009) | 1 line
only clear a module's __dict__ if the module is the only one with a reference to it #7140
........
r75445 | vinay.sajip | 2009-10-16 09:06:44 -0500 (Fri, 16 Oct 2009) | 1 line
Issue #7120: logging: Removed import of multiprocessing which is causing crash in GAE.
........
r75501 | antoine.pitrou | 2009-10-18 13:37:11 -0500 (Sun, 18 Oct 2009) | 3 lines
Add a comment about unreachable code, and fix a typo
........
r75551 | benjamin.peterson | 2009-10-19 22:14:10 -0500 (Mon, 19 Oct 2009) | 1 line
use property api
........
r75572 | benjamin.peterson | 2009-10-20 16:55:17 -0500 (Tue, 20 Oct 2009) | 1 line
clarify buffer arg #7178
........
r75589 | benjamin.peterson | 2009-10-21 21:26:47 -0500 (Wed, 21 Oct 2009) | 1 line
whitespace
........
r75590 | benjamin.peterson | 2009-10-21 21:36:47 -0500 (Wed, 21 Oct 2009) | 1 line
rewrite to be nice to other implementations
........
r75591 | benjamin.peterson | 2009-10-21 21:50:38 -0500 (Wed, 21 Oct 2009) | 4 lines
rewrite for style, clarify, and comments
Also, use the hasattr() like scheme of allowing BaseException exceptions through.
........
r75657 | antoine.pitrou | 2009-10-24 07:41:27 -0500 (Sat, 24 Oct 2009) | 3 lines
Fix compilation error in debug mode.
........
r75742 | benjamin.peterson | 2009-10-26 17:51:16 -0500 (Mon, 26 Oct 2009) | 1 line
use 'is' instead of id()
........
r75868 | benjamin.peterson | 2009-10-27 15:59:18 -0500 (Tue, 27 Oct 2009) | 1 line
test expect base classes
........
r75952 | georg.brandl | 2009-10-29 15:38:32 -0500 (Thu, 29 Oct 2009) | 1 line
Use the correct function name in docstring.
........
r75953 | georg.brandl | 2009-10-29 15:39:50 -0500 (Thu, 29 Oct 2009) | 1 line
Remove mention of the old -X command line switch.
........
r75954 | georg.brandl | 2009-10-29 15:53:00 -0500 (Thu, 29 Oct 2009) | 1 line
Use constants instead of magic integers for test result. Do not re-run with --verbose3 for environment changing tests.
........
r75955 | georg.brandl | 2009-10-29 15:54:03 -0500 (Thu, 29 Oct 2009) | 1 line
Use a single style for all the docstrings in the math module.
........
r75956 | georg.brandl | 2009-10-29 16:16:34 -0500 (Thu, 29 Oct 2009) | 1 line
I do not think the "railroad" program mentioned is still available.
........
r75957 | georg.brandl | 2009-10-29 16:44:56 -0500 (Thu, 29 Oct 2009) | 1 line
Fix constant name.
........
r76057 | benjamin.peterson | 2009-11-02 09:06:45 -0600 (Mon, 02 Nov 2009) | 1 line
prevent a rather unlikely segfault
........
r76105 | georg.brandl | 2009-11-04 01:38:12 -0600 (Wed, 04 Nov 2009) | 1 line
#7259: show correct equivalent for operator.i* operations in docstring; fix minor issues in operator docs.
........
r76139 | benjamin.peterson | 2009-11-06 19:04:38 -0600 (Fri, 06 Nov 2009) | 1 line
spelling
........
r76143 | georg.brandl | 2009-11-07 02:26:07 -0600 (Sat, 07 Nov 2009) | 1 line
#7271: fix typo.
........
r76162 | benjamin.peterson | 2009-11-08 22:10:53 -0600 (Sun, 08 Nov 2009) | 1 line
discuss how to use -p
........
r76223 | georg.brandl | 2009-11-12 02:29:46 -0600 (Thu, 12 Nov 2009) | 1 line
Give the profile module a module directive.
........
svn+ssh://pythondev@svn.python.org/python/trunk
........
r74524 | gregory.p.smith | 2009-08-20 04:39:38 -0500 (Thu, 20 Aug 2009) | 2 lines
Add weakref support to the thread.lock type.
........
r74556 | kristjan.jonsson | 2009-08-27 17:20:21 -0500 (Thu, 27 Aug 2009) | 2 lines
issue 6275
Add an "exc_value" attribute to the _AssertRaisesContext context manager in the unittest package. This allows further tests on the exception that was raised after the context manager exits.
........
Nikita Sobolev
Stanley
Géry Ogam
fancidev
Serhiy Storchaka
Jakub Stasiak
meowmeowmeowcat
Andre Delfino
Daniel Fortunov
Curtis Bucher
Roger Hurwitz
Mark Dickinson
Inada Naoki
Marco Buttu
Mariatta
Martin Panter
Terry Jan Reedy
Antoine Pitrou
Donald Stufft
R David Murray
Nick Coghlan
Richard Oudkerk
Raymond Hettinger
Benjamin Peterson
Collin Winter
Georg Brandl