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diff --git a/src/tools/uic/python/pythonwritedeclaration.cpp b/src/tools/uic/python/pythonwritedeclaration.cpp
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+++ b/src/tools/uic/python/pythonwritedeclaration.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "pythonwritedeclaration.h"
+#include <cppwriteinitialization.h>
+#include <language.h>
+#include <driver.h>
+#include <ui4.h>
+#include <uic.h>
+
+#include <QtCore/qtextstream.h>
+#include <QtCore/qdebug.h>
+
+QT_BEGIN_NAMESPACE
+
+namespace Python {
+
+WriteDeclaration::WriteDeclaration(Uic *uic)  :
+    m_uic(uic),
+    m_driver(uic->driver()),
+    m_output(uic->output()),
+    m_option(uic->option())
+{
+}
+
+void WriteDeclaration::acceptUI(DomUI *node)
+{
+    // remove any left-over C++ namespaces
+    const QString qualifiedClassName = QLatin1String("Ui_") + node->elementClass()
+        + m_option.postfix;
+    m_output << "class " << language::fixClassName(qualifiedClassName) << "(object):\n";
+
+    TreeWalker::acceptWidget(node->elementWidget());
+    if (const DomButtonGroups *domButtonGroups = node->elementButtonGroups())
+        acceptButtonGroups(domButtonGroups);
+    CPP::WriteInitialization(m_uic).acceptUI(node);
+}
+
+// Register button groups to prevent the on-the-fly creation legacy
+// feature from triggering
+void WriteDeclaration::acceptButtonGroup(const DomButtonGroup *buttonGroup)
+{
+    m_driver->findOrInsertButtonGroup(buttonGroup);
+}
+
+} // namespace Python
+
+QT_END_NAMESPACE