text: from __future__ import annotations
  
  from prettyqt import widgets
  from prettyqt.qt import QtWidgets
  
  
  QtWidgets.QColumnView.__bases__ = (widgets.AbstractItemView,)
  
  
  class ColumnView(QtWidgets.QColumnView):
      pass
  
  
  if __name__ == "__main__":
      app = widgets.app()
      dlg = widgets.MainWindow()
      status_bar = ColumnView()
      dlg.show()
      app.main_loop()
  