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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 run_script(self, filename=None, silent=False, set_focus=False,
 args=None):

 """Run a Python script"""

        if filename is None:
            self.shell.interpreter.restore_stds()
            filename, _selfilter = getopenfilename(
                    self, _("Run Python script"), getcwd_or_home(),
                    _("Python scripts")+" (*.py ; *.pyw ; *.ipy)")
            self.shell.interpreter.redirect_stds()
            if filename:
                os.chdir( osp.dirname(filename) )
                filename = osp.basename(filename)
            else:
                return
        logger.debug("Running script with %s", args)
        filename = osp.abspath(filename)
        rbs = remove_backslashes
        command = "runfile('%s', args='%s')" % (rbs(filename), rbs(args))
        if set_focus:
            self.shell.setFocus()
        if self.dockwidget and not self.ismaximized:
            self.dockwidget.setVisible(True)
            self.dockwidget.raise_()
        self.shell.write(command+'\n')
        self.shell.run_command(command)