У вашего броузера проблема в совместимости с HTML5
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https://codeloop.org/pyqt5-gui-creating-wizard-page-with-qwizard/
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In this PyQt5 GUI video i want to show you Creating QWizard in PyQt5 A Wizard is a helper widget which allows for paginated display of information which the user can progress through.
They are commonly used for setup of new programs or building up information prior to an action.
#PyQt5GUI#QWizard#PythonGUI