Fixing - Issue7026 - RuntimeError: dictionary changed size during iteration. Patch by flox
diff --git a/Lib/test/test_collections.py b/Lib/test/test_collections.py
index fb24d43..b44beab 100644
--- a/Lib/test/test_collections.py
+++ b/Lib/test/test_collections.py
@@ -510,8 +510,10 @@
                          [('a', 3), ('b', 2), ('c', 1)])
         self.assertEqual(c['b'], 2)
         self.assertEqual(c['z'], 0)
-        self.assertEqual(c.has_key('c'), True)
-        self.assertEqual(c.has_key('z'), False)
+        # Silence Py3k warning
+        with test_support.check_warnings():
+            self.assertEqual(c.has_key('c'), True)
+            self.assertEqual(c.has_key('z'), False)
         self.assertEqual(c.__contains__('c'), True)
         self.assertEqual(c.__contains__('z'), False)
         self.assertEqual(c.get('b', 10), 2)