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-rw-r--r--examples/pdfwidgets/pdfviewer/mainwindow.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/examples/pdfwidgets/pdfviewer/mainwindow.py b/examples/pdfwidgets/pdfviewer/mainwindow.py
index d37475aca..154c87706 100644
--- a/examples/pdfwidgets/pdfviewer/mainwindow.py
+++ b/examples/pdfwidgets/pdfviewer/mainwindow.py
@@ -1,5 +1,6 @@
# Copyright (C) 2022 The Qt Company Ltd.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+from __future__ import annotations
import math
import sys