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gh-79805: Indicate that Shelve.sync() is not thread-safe #127507

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gh-79805: Indicate that Shelve.sync() is not thread-safe #127507

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85bf7c3
Indicate that `Shelve.sync()` is not thread-safe.
picnixz Dec 2, 2024
9a352ae
Merge branch 'main' into doc/shelve/sync-thread-unsafe-79805
furkanonder Aug 19, 2025
4d9f843
amend merge commit
picnixz Aug 24, 2025
a99d745
refine warning
picnixz Aug 24, 2025
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7 changes: 7 additions & 0 deletions Doc/library/shelve.rst
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Expand Up @@ -105,6 +105,13 @@ Two additional methods are supported:

.. versionadded:: next

.. warning::

During the call to :meth:`!sync`, the *writeback* attribute is set to
:const:`False` and other threads will stop updating the cache. As such,
this method is **not** thread-safe.


.. method:: Shelf.close()

Synchronize and close the persistent *dict* object. Operations on a closed
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