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v0.5.1
https://github.com/python/cpython
09 December 2020, 11:06:31 UTC
Revision 049039832da3d02592d680cebf71ab8a665a6564 authored by Antoine Pitrou on 10 June 2020, 20:37:21 UTC, committed by GitHub on 10 June 2020, 20:37:21 UTC 
[3.7] bpo-40895: Update weakref documentation to remove old warnings (GH-20687) (GH-20793)
 


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:
https://github.com/python/cpython/commit/c1baa601e2b558deb690edfdf334fceee3b03327GH-commitcomment-39514438.
(cherry picked from commit 1642c0ef750f96664a98cadb09301d492098d2fb)

Co-authored-by: Daniel Fortunov <asqui@users.noreply.github.com>

Automerge-Triggered-By: @pitrou
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Tip revision: 049039832da3d02592d680cebf71ab8a665a6564 authored by Antoine Pitrou on 10 June 2020, 20:37:21 UTC
[3.7] bpo-40895: Update weakref documentation to remove old warnings (GH-20687) (GH-20793)
Tip revision: 0490398
CODE_OF_CONDUCT.rst 
Code of Conduct
===============

Please note that all interactions on
`Python Software Foundation <https://www.python.org/psf-landing/>`__-supported
infrastructure is `covered
<https://www.python.org/psf/records/board/minutes/2014-01-06/#management-of-the-psfs-web-properties>`__
by the `PSF Code of Conduct <https://www.python.org/psf/codeofconduct/>`__,
which includes all infrastructure used in the development of Python itself
(e.g. mailing lists, issue trackers, GitHub, etc.).

In general this means everyone is expected to be open, considerate, and
respectful of others no matter what their position is within the project.
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