diff --git a/src/kyupy/circuit.py b/src/kyupy/circuit.py
index b1107f6..b3fd272 100644
--- a/src/kyupy/circuit.py
+++ b/src/kyupy/circuit.py
@@ -40,6 +40,11 @@ class GrowingList(list):
             self.has_nones = fi < len(self)
         return fi
 
+    def without_nones(self):
+        for item in self:
+            if item is not None:
+                yield item
+
 
 class IndexList(list):
     def __delitem__(self, index):