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[ruff] Fix false negative for empty f-strings in deque calls (RUF037) (#20109)

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## Summary

Fixes #20050
This commit is contained in:
Dan Parizher 2025-08-28 16:58:39 -04:00 • committed by GitHub
parent b6522cb534
commit 26082e8ec1
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4 changed files with 24 additions and 2 deletions
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crates/ruff_python_ast/src/helpers.rs
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@ -1406,7 +1406,7 @@ fn is_non_empty_f_string(expr: &ast::ExprFString) -> bool {
/// Returns `true` if the expression definitely resolves to the empty string, when used as an f-string
/// expression.
fn is_empty_f_string(expr: &ast::ExprFString) -> bool {
pub fn is_empty_f_string(expr: &ast::ExprFString) -> bool {
fn inner(expr: &Expr) -> bool {
match expr {
Expr::StringLiteral(ast::ExprStringLiteral { value, .. }) => value.is_empty(),