make sure the name of the exception is added in the scope of the exception - fixes #10

flake8/tests/test_flakes.py

@@ -0,0 +1,17 @@
+from unittest import TestCase
+from flake8.pyflakes import check
+
+
+code = """
+try:
+    pass
+except ValueError as err:
+    print(err)
+"""
+
+
+class TestFlake(TestCase):
+
+    def test_exception(self):
+        warnings = check(code)
+        self.assertEqual(warnings, 0)