From 243620e817be5a7270c9969053b079f11e28477f Mon Sep 17 00:00:00 2001
From: Renato Mello <renato.msf@gmail.com>
Date: Tue, 10 Dec 2024 09:27:01 +0400
Subject: [PATCH] fix doc

---
 doc/source/code-examples/advancedexamples.rst | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doc/source/code-examples/advancedexamples.rst b/doc/source/code-examples/advancedexamples.rst
index 21e25e2465..6e1abee90d 100644
--- a/doc/source/code-examples/advancedexamples.rst
+++ b/doc/source/code-examples/advancedexamples.rst
@@ -802,6 +802,8 @@ using the ``pytorch`` framework.
     import torch
 
     from qibo import Circuit, gates, set_backend
+    from qibo.quantum_info.metrics import infidelity
+
     set_backend(backend="qiboml", platform="pytorch")
 
     # Optimization parameters