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gh-143969: Fix frozen+slotted dataclass setattr crash ambiguity - #143971

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dawdameet wants to merge 3 commits into

python:mainfrom

dawdameet:fix-frozen-slots-setattr

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gh-143969: Fix frozen+slotted dataclass setattr crash ambiguity#143971
dawdameet wants to merge 3 commits into
python:mainfrom
dawdameet:fix-frozen-slots-setattr

Commits on Jan 17, 2026
- gh-143969: Fix frozen+slotted dataclass __setattr__ crash ambiguity
  dawdameet
  committed
  d3b62e4
- gh-143969: Fix crash in frozen slots dataclasses by patching closure cells
  dawdameet
  committed
  34cfdda
Commits on Jan 18, 2026
- Update Misc/NEWS.d/next/Library/2026-01-17-23-15-55.gh-issue-143969.Waq8zN.rst
  
  dawdameet
  and
  aisk
  authored
  9f255ac