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Avoid mutable-class-default violations for Pydantic subclasses (#9187)

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Only applies to subclasses defined within the same file, as elsewhere.

See:
https://github.com/astral-sh/ruff/issues/5243#issuecomment-1860776975.
This commit is contained in:
Charlie Marsh 2023-12-18 11:19:07 -05:00 • committed by GitHub
parent c532089fb3
commit 0bf7683a3f
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2 changed files with 17 additions and 16 deletions
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8
crates/ruff_linter/resources/test/fixtures/ruff/RUF012.py vendored
View file

@ -59,3 +59,11 @@ class F(BaseSettings):
without_annotation = []
class_variable: ClassVar[list[int]] = []
final_variable: Final[list[int]] = []
class G(F):
mutable_default: list[int] = []
immutable_annotation: Sequence[int] = []
without_annotation = []
class_variable: ClassVar[list[int]] = []
final_variable: Final[list[int]] = []

13
crates/ruff_linter/src/rules/ruff/rules/helpers.rs
View file

@ -1,7 +1,6 @@
use ruff_python_ast::{self as ast, Arguments, Expr};
use ruff_python_ast::helpers::{map_callable, map_subscript};
use ruff_python_semantic::{BindingKind, SemanticModel};
use ruff_python_ast::{self as ast, Expr};
use ruff_python_semantic::{analyze, BindingKind, SemanticModel};
/// Return `true` if the given [`Expr`] is a special class attribute, like `__slots__`.
///
@ -57,12 +56,7 @@ pub(super) fn has_default_copy_semantics(
class_def: &ast::StmtClassDef,
semantic: &SemanticModel,
) -> bool {
let Some(Arguments { args: bases, .. }) = class_def.arguments.as_deref() else {
return false;
};
bases.iter().any(|expr| {
semantic.resolve_call_path(expr).is_some_and(|call_path| {
analyze::class::any_over_body(class_def, semantic, &|call_path| {
matches!(
call_path.as_slice(),
["pydantic", "BaseModel" | "BaseSettings"]
@ -70,7 +64,6 @@ pub(super) fn has_default_copy_semantics(
| ["msgspec", "Struct"]
)
})
})
}
/// Returns `true` if the given function is an instantiation of a class that implements the