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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(self, arguments=None, get_unknowns=False):
 """ Init point to execute the script. If `arguments` string is given, will evaluate the arguments, else evaluates sys.argv. Any inheriting class should extend the run method (but first calling BaseCmdLineTool.run(self)). """


        # redirect PIPE signal to quiet kill script, if not on Windows
        if os.name != 'nt':
            signal.signal(signal.SIGPIPE, signal.SIG_DFL)
        if get_unknowns:
            if arguments:
                self.args, self.unknown_args = (self.argparser.parse_known_args
                                                (args=arguments.split()))
            else:
                (self.args,
                 self.unknown_args) = self.argparser.parse_known_args()
            self.args = vars(self.args)
        else:
            if arguments:
                myargs = arguments.split()
                self.args = vars(self.argparser.parse_args
                                 (args=myargs))
            else:
                self.args = vars(self.argparser.parse_args())

        self.progress_bar_enabled = (not (self.args['no_progressbar'] or
                                          self.is_stdin))