Test that used variable in loop is considered used

1 files changed, 12 insertions, 0 deletions

diff --git a/pyflakes/test/test_other.py b/pyflakes/test/test_other.py
index d3de9c1..367c4b3 100644
--- a/pyflakes/test/test_other.py
+++ b/pyflakes/test/test_other.py
@@ -534,6 +534,18 @@ class TestUnusedAssignment(TestCase):
             b = 2
         ''', m.UnusedVariable)
 
+    def test_variableUsedInLoop(self):
+        """
+        Shadowing a used variable cannot raise an UnusedVariable warning in the
+        context of a loop.
+        """
+        self.flakes('''
+        def a():
+            b = True
+            while b:
+                b = False
+        ''')
+
     def test_assignToGlobal(self):
         """
         Assigning to a global and then not using that global is perfectly