From fdfce5314195d1b03fe30ee907468f875773acaf Mon Sep 17 00:00:00 2001
From: albi3ro <chrissie.c.l@gmail.com>
Date: Mon, 17 Jun 2024 17:06:28 -0400
Subject: [PATCH] once again try to iterate over the annotated queue

---
 pennylane/queuing.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pennylane/queuing.py b/pennylane/queuing.py
index b3805e1c233..ffb35bd9165 100644
--- a/pennylane/queuing.py
+++ b/pennylane/queuing.py
@@ -576,7 +576,9 @@ def process_queue(
     list_order = {"_ops": 1, "_measurements": 2}
     current_list = "_ops"
 
-    for obj in queue.queue:
+    # cant use for obj in queue.queue, as OperatorRecorder overrides the definition of queue
+    # cant use for obj in queue, as QuantumTape overrides the definition of __iter__
+    for obj, _ in queue.items():
         if not hasattr(obj, "_queue_category"):
             raise QueuingError(
                 f"{obj} encountered in AnnotatedQueue and is not an object that can "