From 040e9af2726710bb0ed08a5bc6439e60176ad382 Mon Sep 17 00:00:00 2001
From: "mergify[bot]" <37929162+mergify[bot]@users.noreply.github.com>
Date: Mon, 6 May 2024 07:01:45 +0000
Subject: [PATCH] Fix power() in subclass test for QuantumCircuit change
 (backport #172) (#174)

Co-authored-by: Steve Wood <40241007+woodsp-ibm@users.noreply.github.com>
---
 qiskit_algorithms/gradients/reverse/derive_circuit.py | 4 ++--
 test/test_amplitude_estimators.py                     | 6 ++++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/qiskit_algorithms/gradients/reverse/derive_circuit.py b/qiskit_algorithms/gradients/reverse/derive_circuit.py
index 57774fc3..e4978877 100644
--- a/qiskit_algorithms/gradients/reverse/derive_circuit.py
+++ b/qiskit_algorithms/gradients/reverse/derive_circuit.py
@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2022, 2023.
+# (C) Copyright IBM 2022, 2024.
 #
 # This code is licensed under the Apache License, Version 2.0. You may
 # obtain a copy of this license in the LICENSE.txt file in the root directory
@@ -148,7 +148,7 @@ def derive_circuit(
     gradient = []
     for product_rule_term in itertools.product(*summands):
         summand_circuit = QuantumCircuit(*circuit.qregs)
-        c = 1
+        c = complex(1)
         for i, term in enumerate(product_rule_term):
             c *= term[0]
             summand_circuit.data.append([term[1], *op_context[i]])
diff --git a/test/test_amplitude_estimators.py b/test/test_amplitude_estimators.py
index 4aa3e281..0969ddb9 100644
--- a/test/test_amplitude_estimators.py
+++ b/test/test_amplitude_estimators.py
@@ -1,6 +1,6 @@
 # This code is part of a Qiskit project.
 #
-# (C) Copyright IBM 2018, 2023.
+# (C) Copyright IBM 2018, 2024.
 #
 # This code is licensed under the Apache License, Version 2.0. You may
 # obtain a copy of this license in the LICENSE.txt file in the root directory
@@ -47,7 +47,9 @@ def __init__(self, probability):
         self.angle = 2 * np.arcsin(np.sqrt(probability))
         self.ry(2 * self.angle, 0)
 
-    def power(self, power, matrix_power=False):
+    # Disable for pylint needed for Qiskit < 1.1.0 where annotated does not exist
+    # pylint: disable=unused-argument
+    def power(self, power, matrix_power=False, annotated: bool = False):
         if matrix_power:
             return super().power(power, True)