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Fix type-checking when using deprecated FieldValidationInfo #995

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merged 1 commit into from Sep 29, 2023
Merged

Fix type-checking when using deprecated FieldValidationInfo #995

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3 changes: 3 additions & 0 deletions python/pydantic_core/core_schema.py
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Expand Up @@ -3909,6 +3909,9 @@ def general_plain_validator_function(*args, **kwargs):
'FieldWrapValidatorFunction': WithInfoWrapValidatorFunction,
}

if TYPE_CHECKING:
FieldValidationInfo = ValidationInfo
Comment on lines +3912 to +3913
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FWIW according to https://peps.python.org/pep-0702/#deprecation-of-modules-and-attributes there is no way to mark a module-level attribute as deprecated for typing purposes so this is the best we can do.



def __getattr__(attr_name: str) -> object:
new_attr = _deprecated_import_lookup.get(attr_name)
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4 changes: 4 additions & 0 deletions tests/test_typing.py
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Expand Up @@ -23,6 +23,10 @@ def foo(bar: str) -> None:
...


def validator_deprecated(value: Any, info: core_schema.FieldValidationInfo) -> None:
...
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I'm not sure that we're running mypy on this. Does this fail before the source change? Might be worth pushing a commit without the source change to see CI fail.

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I think only Pyright runs on this file and it was failing after adding the test but before adding the fix. To my knowledge, mypy runs only stubtests.



def validator(value: Any, info: core_schema.ValidationInfo) -> None:
...

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