Anupdate to the dataclasses docs, intended to make magic method names link to the relevant data model documentation, accidentally changed a line that shouldn't have been changed.

The docs used to say

There is a tiny performance penalty when usingfrozen=True:__init__() cannot use simple assignment to initialize fields, and must useobject.__setattr__().

The documentation update accidentally changedobject.__setattr__ to just__setattr__ here, so now it reads

There is a tiny performance penalty when usingfrozen=True:__init__() cannot use simple assignment to initialize fields, and must use__setattr__().

This line was specifically meant to refer toobject.__setattr__, the__setattr__ method of the baseobject class, as simple attribute assignment would hit the frozen dataclass's__setattr__ override.

This part of the documentation should be reverted. I think it should just take a 1-character change, simply removing a tilde.

Linked PRs

• gh-108267: Dataclasses docs line should have said "object.__setattr__" instead of just "__setattr__" #108355
• [3.11] gh-108267: Dataclasses docs: Fix object.__setattr__ typo (GH-108355) #108357
• [3.12] gh-108267: Dataclasses docs: Fix object.__setattr__ typo (GH-108355) #108358
• gh-108267: Fix object.__setattr__ regression in dataclasses docs #119082
• [3.13] gh-108267: Fix object.__setattr__ regression in dataclasses docs (GH-119082) #119097
• [3.12] gh-108267: Fix object.__setattr__ regression in dataclasses docs (GH-119082) #119098
• gh-108267 Fix another dataclasses docs typo #119277
• [3.13] gh-108267 Fix another dataclasses docs typo (GH-119277) #119279
• [3.12] gh-108267 Fix another dataclasses docs typo (GH-119277) #119280