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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def starting_long_process(self, message):
 """ Showing message in main window's status bar. This also changes mouse cursor to Qt.WaitCursor """

        self.show_message(message)
        QApplication.setOverrideCursor(QCursor(Qt.WaitCursor))
        QApplication.processEvents()