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Avoid PEP 604 isinstance errors for starred tuples (#3527)

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Charlie Marsh 2023-03-14 18:08:43 -04:00 • committed by GitHub
parent 58353a4bf4
commit 2545869797
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2 changed files with 11 additions and 0 deletions
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1
crates/ruff/resources/test/fixtures/pyupgrade/UP038.py vendored
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@ -6,3 +6,4 @@ issubclass("yes", int) # OK
isinstance(1, int | float) # OK
issubclass("yes", int | str) # OK
isinstance(1, ()) # OK
isinstance(1, (int, *(str, bytes))) # OK

10
crates/ruff/src/rules/pyupgrade/rules/use_pep604_isinstance.rs
View file

@ -79,9 +79,19 @@ pub fn use_pep604_isinstance(checker: &mut Checker, expr: &Expr, func: &Expr, ar
};
if let Some(types) = args.get(1) {
if let ExprKind::Tuple { elts, .. } = &types.node {
// Ex) `()`
if elts.is_empty() {
return;
}
// Ex) `(*args,)`
if elts
.iter()
.any(|elt| matches!(elt.node, ExprKind::Starred { .. }))
{
return;
}
let mut diagnostic =
Diagnostic::new(IsinstanceWithTuple { kind }, Range::from(expr));
if checker.patch(diagnostic.kind.rule()) {