Feature or enhancement

Proposal:

Issue created to track the implementation of https://peps.python.org/pep-0814/.

Has this already been discussed elsewhere?

No response given

Links to previous discussion of this feature:

No response

Linked PRs

• [WIP] gh-141510: PEP 814: Add built-in frozendict type #141508
• gh-141510, PEP 814: Add built-in frozendict type #144757
• gh-141510, PEP 814: Add frozendict support to json #144903
• gh-141510: Replace MappingProxyType with frozendict #144904
• gh-141510: Implement copy and deepcopy for frozendict #144905
• gh-141510: Use frozendict for errno.errorcode #144906
• gh-141510: Run regen-test-frozenmain for frozendict #144907
• gh-141510: Support frozendict in pprint #144908
• gh-141510: Use frozendict in the stdlib #144909
• gh-141510: Use frozendict in the _opcode_metadata #144910
• gh-141510: Update specializer to support frozendict with BINARY_SUBSCR #144911
• gh-141510: Add frozendict fast-path to the set type #144912
• gh-141510: Update mp_length of frozendict to use non atomic operation #144913
• gh-141510: Optimize {frozen}dict.fromkeys for frozendict #144915
• gh-141510: Optimize hash(frozendict) #144919
• gh-141510: Remove unncessary lock holding for frozendict repr #144920
• gh-141510: Change repr(frozendict) for empty dict #144921
• gh-141510: Fix test_xpickle failing with introduction of frozendict #144927
• gh-141510: Mention frozendict in dict documentation #144934
• gh-141510, PEP 814: Add frozendict support to pickle #144936
• gh-141510: Add frozendict_check_mutable() #144944
• gh-141510: Fix frozendict.fromkeys() for subclasses #144947
• gh-141510: Update specializer to support frozendict #144949
• gh-141510: Fix frozendict.fromkeys() for subclasses #144952
• gh-141510: Add can_modify_dict() in dictobject.c #144955
• gh-141510: Update Whats News for frozendict #144961
• gh-141510: Fix frozendict.fromkeys() for dict subclasses #144962
• gh-141510, PEP 814: Add frozendict support to pickle #144967
• gh-141510: Update ftscalingbench to support frozendict #144999
• gh-141510: Document ParameterizedMIMEHeader.params change #145003
• gh-141510: Fix copy.deepcopy() for recursive frozendict #145027
• gh-145122: Add _GUARD_NOS_ANY_DICT to prevent STORE_SUBSCR_DICT on frozendict #145039
• gh-141510: Fix test_xpickle for Python 3.14 and older #145069
• gh-141510: Test frozendict C API #145081
• gh-141510: Check argument in PyDict_MergeFromSeq2() #145082
• gh-141510: Check argument in PyDict_Contains() #145083
• gh-141510: Test frozendict in test_capi.test_dict #145084
• gh-141510: Change dict_unhashable_type() error message for frozendict #145085
• gh-141510: support frozendict's in the C decimal module #145165
• gh-141510: Update PyDict_Copy documentation with note on frozendict #145249
• gh-141510: Return frozendict unmodified in PyDict_Copy() #145505
• gh-141510: Optimize PyDict_Copy() for frozendict #145509
• gh-141510: Add frozendict support to python-gdb.py #145511
• gh-141510: Always return a dict in PyDict_Copy() #145517
• gh-141510: Don't accept frozendict in PyDict_Watch() #145529
• gh-141510: Add PyAnyDict_AsNewDict() function #145531
• gh-141510: Update PyDict C API doc for frozendict #145533
• gh-141510: Fix frozendict.items() ^ frozendict.items() #145535
• gh-141510: Complete What's New in Python 3.15 for frozendict #145537
• gh-141510: No longer accept frozendict in PyDict_Copy() #145542
• gh-141510: Change marshal version to 6 #145551
• gh-141510: Raise TypeError in PyDict_SetItem() on frozendict #145564
• gh-141510: Support frozendict in plistlib #145590
• gh-141510: Optimize frozendict(frozendict) #145592
• gh-141510: Avoid critical section on frozendict copy #145920
• gh-141510: Document isinstance change for frozendict in What's New #146107
• gh-141510 Update mapping methods in abstract.c to accept frozendict #150692
• gh-141510 Document and test frozendict class matching behaviour #150799
• [3.15] gh-141510 Document and test frozendict class matching behaviour (GH-150799) #151701
• [3.15] gh-141510 Add frozendict fast paths to abstract.c (GH-150692) #151704
• gh-141510: Update marshal module comment with frozendict support #153655
• [3.15] gh-141510: Update marshal module comment with frozendict support (GH-153655) #153681
• gh-141510: Document frozendict support in json #155929
• [3.15] gh-141510: Document frozendict support in json (gh-155929) #155933