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Pydantic · Function

PrivateAttr

PrivateAttr declares internal model attributes that Pydantic does not validate or serialize normally. Give it a default value or a factory to create the value.

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Syntax

PrivateAttr(default=..., *, init=False)
PrivateAttr(*, default_factory=..., init=False)
PrivateAttr(*, init=False)

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  • ModelPrivateAttr
  • BaseModel
  • model_post_init

Source: Fields | Pydantic Docs. Checked 2026-11-03.