From 9425bdfd9a4d1fcd004272eb52a5de3a67908f37 Mon Sep 17 00:00:00 2001
From: Vincent Gao <gaobing1230@gmail.com>
Date: Thu, 25 Jun 2026 18:40:48 +0200
Subject: [PATCH] Fix B020 false positive for attribute iterables

---
 bugbear.py               | 12 ++++++++++++
 tests/eval_files/b020.py |  5 +++++
 2 files changed, 17 insertions(+)

diff --git a/bugbear.py b/bugbear.py
index e7ae9c9..cf814b4 100644
--- a/bugbear.py
+++ b/bugbear.py
@@ -2214,6 +2214,18 @@ def visit(self, node) -> None:
 class B020NameFinder(NameFinder):
     """Ignore names defined within the local scope of a comprehension."""
 
+    def visit_Attribute(self, node) -> None:  # noqa: B906
+        pass
+
+    def visit_Call(self, node) -> None:
+        if isinstance(node.func, ast.Attribute):
+            self.visit(node.func.value)
+            self.visit(node.args)
+            self.visit(node.keywords)
+            return
+
+        self.generic_visit(node)
+
     def visit_GeneratorExp(self, node) -> None:
         self.visit(node.generators)
 
diff --git a/tests/eval_files/b020.py b/tests/eval_files/b020.py
index e6b39ea..882d098 100644
--- a/tests/eval_files/b020.py
+++ b/tests/eval_files/b020.py
@@ -38,3 +38,8 @@
 
 for var in sorted(range(10), key=lambda var: var.real):
     print(var)
+
+# Attribute access on the loop target name is not iterating over the same
+# object, so it should not trigger B020.
+for smoother in smoother.smoothers:
+    print(smoother)