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[3.15] gh-141510: Document frozendict support in json (gh-155929) #155933

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hugovk merged 1 commit into from
Aug 19, 2026
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[3.15] gh-141510: Document frozendict support in json (gh-155929) #155933

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gh-141510: Document frozendict support in json (gh-155929) 
(cherry picked from commit c3df37c)

Co-authored-by: Sanghun Lee <oper6909@gmail.com>
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@fregataa @miss-islington
fregataa authored and miss-islington committed Aug 17, 2026
commit e675e69fc202345a2e06ddcbfde42967836fdbfc
5 changes: 4 additions & 1 deletion Doc/library/json.rst
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Expand Up @@ -486,7 +486,7 @@ Encoders and Decoders
+----------------------------------------+---------------+
| Python | JSON |
+========================================+===============+
| dict | object |
| dict, frozendict | object |
+----------------------------------------+---------------+
| list, tuple | array |
+----------------------------------------+---------------+
Expand All @@ -504,6 +504,9 @@ Encoders and Decoders
.. versionchanged:: 3.4
Added support for int- and float-derived Enum classes.

.. versionchanged:: 3.15
Added support for :class:`frozendict`.

To extend this to recognize other objects, subclass and implement a
:meth:`~JSONEncoder.default` method with another method that returns a serializable object
for ``o`` if possible, otherwise it should call the superclass implementation
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