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[red-knot] Precise inference for __class__ attributes on objects of all types (#14921)

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Alex Waygood 2024-12-11 17:30:34 +00:00 • committed by GitHub
parent a54353392f
commit c361cf66ad
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3 changed files with 45 additions and 5 deletions
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8
crates/red_knot_python_semantic/src/types.rs
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@ -1272,6 +1272,10 @@ impl<'db> Type<'db> {
/// as accessed from instances of the `Bar` class.
#[must_use]
pub(crate) fn member(&self, db: &'db dyn Db, name: &str) -> Symbol<'db> {
if name == "__class__" {
return self.to_meta_type(db).into();
}
match self {
Type::Any => Type::Any.into(),
Type::Never => {
@ -2697,10 +2701,6 @@ impl<'db> Class<'db> {
return Type::tuple(db, &tuple_elements).into();
}
if name == "__class__" {
return self.metaclass(db).into();
}
for superclass in self.iter_mro(db) {
match superclass {
// TODO we may instead want to record the fact that we encountered dynamic, and intersect it with