fix accessed global annotation being redefined in a local scope (#765)

2 files changed, 8 insertions, 1 deletions

diff --git a/pyflakes/checker.py b/pyflakes/checker.py
index 4d778a8..e654afa 100644
--- a/pyflakes/checker.py
+++ b/pyflakes/checker.py
@@ -1068,7 +1068,7 @@ class Checker:
 
             binding = scope.get(name, None)
             if isinstance(binding, Annotation) and not self._in_postponed_annotation:
-                scope[name].used = True
+                scope[name].used = (self.scope, node)
                 continue
 
             if name == 'print' and isinstance(binding, Builtin):
diff --git a/pyflakes/test/test_type_annotations.py b/pyflakes/test/test_type_annotations.py
index f0fd3b9..396d676 100644
--- a/pyflakes/test/test_type_annotations.py
+++ b/pyflakes/test/test_type_annotations.py
@@ -367,6 +367,13 @@ class TestTypeAnnotations(TestCase):
             x = 3
         ''', m.UnusedVariable)
 
+    def test_unused_annotation_in_outer_scope_reassigned_in_local_scope(self):
+        self.flakes('''
+        x: int
+        x.__dict__
+        def f(): x = 1
+        ''', m.UndefinedName, m.UnusedVariable)
+
     def test_unassigned_annotation_is_undefined(self):
         self.flakes('''
         name: str