Avoid removing shadowed imports that point to different symbols (#10387)

This ensures that we don't have incorrect, automated fixes for shadowed
names that actually point to different imports.

See: https://github.com/astral-sh/ruff/issues/10384.

crates/ruff_linter/resources/test/fixtures/pyflakes/F811_28.py

@@ -0,0 +1,6 @@
+"""Regression test for: https://github.com/astral-sh/ruff/issues/10384"""
+
+import datetime
+from datetime import datetime
+
+datetime(1, 2, 3)

crates/ruff_linter/src/checkers/ast/analyze/deferred_scopes.rs

@@ -259,23 +259,29 @@ pub(crate) fn deferred_scopes(checker: &mut Checker) {
                         diagnostic.set_parent(range.start());
                     }
 
-                    if let Some(import) = binding.as_any_import() {
+                    // Remove the import if the binding and the shadowed binding are both imports,
-                        if let Some(source) = binding.source {
+                    // and both point to the same qualified name.
-                            diagnostic.try_set_fix(|| {
+                    if let Some(shadowed_import) = shadowed.as_any_import() {
-                                let statement = checker.semantic().statement(source);
+                        if let Some(import) = binding.as_any_import() {
-                                let parent = checker.semantic().parent_statement(source);
+                            if shadowed_import.qualified_name() == import.qualified_name() {
-                                let edit = fix::edits::remove_unused_imports(
+                                if let Some(source) = binding.source {
-                                    std::iter::once(import.member_name().as_ref()),
+                                    diagnostic.try_set_fix(|| {
-                                    statement,
+                                        let statement = checker.semantic().statement(source);
-                                    parent,
+                                        let parent = checker.semantic().parent_statement(source);
-                                    checker.locator(),
+                                        let edit = fix::edits::remove_unused_imports(
-                                    checker.stylist(),
+                                            std::iter::once(import.member_name().as_ref()),
-                                    checker.indexer(),
+                                            statement,
-                                )?;
+                                            parent,
-                                Ok(Fix::safe_edit(edit).isolate(Checker::isolation(
+                                            checker.locator(),
-                                    checker.semantic().parent_statement_id(source),
+                                            checker.stylist(),
-                                )))
+                                            checker.indexer(),
-                            });
+                                        )?;
+                                        Ok(Fix::safe_edit(edit).isolate(Checker::isolation(
+                                            checker.semantic().parent_statement_id(source),
+                                        )))
+                                    });
+                                }
+                            }
                         }
                     }
 

crates/ruff_linter/src/rules/pyflakes/mod.rs

@@ -124,6 +124,7 @@ mod tests {
     #[test_case(Rule::RedefinedWhileUnused, Path::new("F811_25.py"))]
     #[test_case(Rule::RedefinedWhileUnused, Path::new("F811_26.py"))]
     #[test_case(Rule::RedefinedWhileUnused, Path::new("F811_27.py"))]
+    #[test_case(Rule::RedefinedWhileUnused, Path::new("F811_28.py"))]
     #[test_case(Rule::UndefinedName, Path::new("F821_0.py"))]
     #[test_case(Rule::UndefinedName, Path::new("F821_1.py"))]
     #[test_case(Rule::UndefinedName, Path::new("F821_2.py"))]

crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__F811_F811_1.py.snap

@@ -1,15 +1,9 @@
 ---
 source: crates/ruff_linter/src/rules/pyflakes/mod.rs
 ---
-F811_1.py:1:25: F811 [*] Redefinition of unused `FU` from line 1
+F811_1.py:1:25: F811 Redefinition of unused `FU` from line 1
   |
 1 | import fu as FU, bar as FU
   |                         ^^ F811
   |
   = help: Remove definition: `FU`
-
-ℹ Safe fix
-1   |-import fu as FU, bar as FU
-  1 |+import fu as FU
-
-

crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__F811_F811_12.py.snap

@@ -1,7 +1,7 @@
 ---
 source: crates/ruff_linter/src/rules/pyflakes/mod.rs
 ---
-F811_12.py:6:20: F811 [*] Redefinition of unused `mixer` from line 2
+F811_12.py:6:20: F811 Redefinition of unused `mixer` from line 2
   |
 4 |     pass
 5 | else:
@@ -10,13 +10,3 @@ F811_12.py:6:20: F811 [*] Redefinition of unused `mixer` from line 2
 7 | mixer(123)
   |
   = help: Remove definition: `mixer`
-
-ℹ Safe fix
-3 3 | except ImportError:
-4 4 |     pass
-5 5 | else:
-6   |-    from bb import mixer
-  6 |+    pass
-7 7 | mixer(123)
-
-

crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__F811_F811_2.py.snap

@@ -1,15 +1,9 @@
 ---
 source: crates/ruff_linter/src/rules/pyflakes/mod.rs
 ---
-F811_2.py:1:34: F811 [*] Redefinition of unused `FU` from line 1
+F811_2.py:1:34: F811 Redefinition of unused `FU` from line 1
   |
 1 | from moo import fu as FU, bar as FU
   |                                  ^^ F811
   |
   = help: Remove definition: `FU`
-
-ℹ Safe fix
-1   |-from moo import fu as FU, bar as FU
-  1 |+from moo import fu as FU
-
-

crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__F811_F811_23.py.snap

@@ -1,18 +1,10 @@
 ---
 source: crates/ruff_linter/src/rules/pyflakes/mod.rs
 ---
-F811_23.py:4:15: F811 [*] Redefinition of unused `foo` from line 3
+F811_23.py:4:15: F811 Redefinition of unused `foo` from line 3
   |
 3 | import foo as foo
 4 | import bar as foo
   |               ^^^ F811
   |
   = help: Remove definition: `foo`
-
-ℹ Safe fix
-1 1 | """Test that shadowing an explicit re-export produces a warning."""
-2 2 | 
-3 3 | import foo as foo
-4   |-import bar as foo
-
-

crates/ruff_linter/src/rules/pyflakes/snapshots/ruff_linter__rules__pyflakes__tests__F811_F811_28.py.snap

@@ -0,0 +1,12 @@
+---
+source: crates/ruff_linter/src/rules/pyflakes/mod.rs
+---
+F811_28.py:4:22: F811 Redefinition of unused `datetime` from line 3
+  |
+3 | import datetime
+4 | from datetime import datetime
+  |                      ^^^^^^^^ F811
+5 | 
+6 | datetime(1, 2, 3)
+  |
+  = help: Remove definition: `datetime`