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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 quit(self, *args):
 """Quit the application. """

        self.logger.info("Attempting to shut down the application...")
        if self.layout_file is not None:
            self.error_wrap(self.ds.write_layout_conf, self.layout_file)

        self.stop()

        self.w.root = None
        while len(self.ds.toplevels) > 0:
            w = self.ds.toplevels.pop()
            w.delete()