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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 get_simple_output(self, stderr=STDOUT):
 """Executes a simple external command and get its output The command contains no pipes. Error messages are redirected to the standard output by default :param stderr: where to put stderr :return: output of command """

        args = shlex.split(self.cmd)
        proc = Popen(args, stdout=PIPE, stderr=stderr)
        return proc.communicate()[0].decode("utf8")