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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 execute(cls, cmd, arguments="", shell=False, cwd=None, traceflag=True, witherror=True):
 """Run Shell command :param witherror: if set to False the error will not be printed :param traceflag: if set to true the trace is printed in case of an error :param cwd: the current working directory in whcih the command is supposed to be executed. :param shell: if set to true the subprocess is called as part of a shell :param cmd: command to run :param arguments: we do not know yet :return: """

        # print "--------------"
        result = None
        terminal = cls.terminal_type()
        # print cls.command
        os_command = [cmd]
        if terminal in ['linux', 'windows']:
            os_command = [cmd]
        elif 'cygwin' in terminal:
            if not cls.command_exists(cmd):
                print("ERROR: the command could not be found", cmd)
                return
            else:
                os_command = [cls.command[cls.operating_system()][cmd]]

        if isinstance(arguments, list):
            os_command = os_command + arguments
        elif isinstance(arguments, tuple):
            os_command = os_command + list(arguments)
        elif isinstance(arguments, str):
            os_command = os_command + arguments.split()
        else:
            print("ERROR: Wrong parameter type", type(arguments))

        if cwd is None:
            cwd = os.getcwd()
        try:
            if shell:
                result = subprocess.check_output(
                    os_command,
                    stderr=subprocess.STDOUT,
                    shell=True,
                    cwd=cwd)
            else:
                result = subprocess.check_output(
                    os_command,
                    # shell=True,
                    stderr=subprocess.STDOUT,
                    cwd=cwd)
        except:
            if witherror:
                Console.error("problem executing subprocess",
                              traceflag=traceflag)
        if result is not None:
            result = result.strip().decode()
        return result