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gh-141510: Replace MappingProxyType with frozendict #144904

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Merged
vstinner merged 5 commits into from
Feb 18, 2026
Merged

gh-141510: Replace MappingProxyType with frozendict #144904

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df40ed7
gh-141510: Replace MappingProxyType with frozendict
vstinner Feb 17, 2026
98e6e45
Revert tomllib change
vstinner Feb 17, 2026
38bb5b0
Update _EMPTY_METADATA comment
vstinner Feb 18, 2026
6089774
Merge branch 'main' into frozendict_mappingproxy
vstinner Feb 18, 2026
5e3b1c4
Update test_dataclasses for repr(frozendict)
vstinner Feb 18, 2026
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Update _EMPTY_METADATA comment
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@vstinner
vstinner committed Feb 18, 2026
commit 38bb5b0496904438d9406779d9df933449709863
2 changes: 1 addition & 1 deletion Lib/dataclasses.py
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Expand Up @@ -191,7 +191,7 @@ class _KW_ONLY_TYPE:
KW_ONLY = _KW_ONLY_TYPE()

# Since most per-field metadata will be unused, create an empty
# read-only proxy that can be shared among all fields.
# read-only dictionary that can be shared among all fields.
_EMPTY_METADATA = frozendict()

# Markers for the various kinds of fields and pseudo-fields.
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