How to use the multiprocess.process.current_process function in multiprocess

def get_command_line():
        '''
        Returns prefix of command line used for spawning a child process
        '''
        if getattr(process.current_process(), '_inheriting', False):
            raise RuntimeError('''
            Attempt to start a new process before the current process
            has finished its bootstrapping phase.

            This probably means that you are on Windows and you have
            forgotten to use the proper idiom in the main module:

                if __name__ == '__main__':
                    freeze_support()
                    ...

            The "freeze_support()" line can be omitted if the program
            is not going to be frozen to produce a Windows executable.''')

        if getattr(sys, 'frozen', False):
            return [sys.executable, '--multiprocessing-fork']

def get_command_line():
        '''
        Returns prefix of command line used for spawning a child process
        '''
        if process.current_process()._identity==() and is_forking(sys.argv):
            raise RuntimeError('''
            Attempt to start a new process before the current process
            has finished its bootstrapping phase.

            This probably means that you are on Windows and you have
            forgotten to use the proper idiom in the main module:

                if __name__ == '__main__':
                    freeze_support()
                    ...

            The "freeze_support()" line can be omitted if the program
            is not going to be frozen to produce a Windows executable.''')

        if getattr(sys, 'frozen', False):
            return [sys.executable, '--multiprocessing-fork']

def prepare(data):
    '''
    Try to get current process ready to unpickle process object
    '''
    old_main_modules.append(sys.modules['__main__'])

    if 'name' in data:
        process.current_process().name = data['name']

    if 'authkey' in data:
        process.current_process()._authkey = data['authkey']

    if 'log_to_stderr' in data and data['log_to_stderr']:
        util.log_to_stderr()

    if 'log_level' in data:
        util.get_logger().setLevel(data['log_level'])

    if 'sys_path' in data:
        sys.path = data['sys_path']

    if 'sys_argv' in data:
        sys.argv = data['sys_argv']

def get_temp_dir():
    # get name of a temp directory which will be automatically cleaned up
    if current_process()._tempdir is None:
        import shutil, tempfile
        tempdir = tempfile.mkdtemp(prefix='pymp-')
        info('created temp directory %s', tempdir)
        Finalize(None, shutil.rmtree, args=[tempdir], exitpriority=-100)
        current_process()._tempdir = tempdir
    return current_process()._tempdir

def get_command_line():
        '''
        Returns prefix of command line used for spawning a child process
        '''
        if getattr(process.current_process(), '_inheriting', False):
            raise RuntimeError('''
            Attempt to start a new process before the current process
            has finished its bootstrapping phase.

            This probably means that you are on Windows and you have
            forgotten to use the proper idiom in the main module:

                if __name__ == '__main__':
                    freeze_support()
                    ...

            The "freeze_support()" line can be omitted if the program
            is not going to be frozen to produce a Windows executable.''')

        if getattr(sys, 'frozen', False):
            return [sys.executable, '--multiprocessing-fork']

def get_preparation_data(name):
        '''
        Return info about parent needed by child to unpickle process object
        '''
        from .util import _logger, _log_to_stderr

        d = dict(
            name=name,
            sys_path=sys.path,
            sys_argv=sys.argv,
            log_to_stderr=_log_to_stderr,
            orig_dir=process.ORIGINAL_DIR,
            authkey=process.current_process().authkey,
            )

        if _logger is not None:
            d['log_level'] = _logger.getEffectiveLevel()

        if not WINEXE:
            main_path = getattr(sys.modules['__main__'], '__file__', None)
            if not main_path and sys.argv[0] not in ('', '-c'):
                main_path = sys.argv[0]
            if main_path is not None:
                if not os.path.isabs(main_path) and \
                                          process.ORIGINAL_DIR is not None:
                    main_path = os.path.join(process.ORIGINAL_DIR, main_path)
                d['main_path'] = os.path.normpath(main_path)

        return d

def get_temp_dir():
    # get name of a temp directory which will be automatically cleaned up
    if current_process()._tempdir is None:
        import shutil, tempfile
        tempdir = tempfile.mkdtemp(prefix='pymp-')
        info('created temp directory %s', tempdir)
        Finalize(None, shutil.rmtree, args=[tempdir], exitpriority=-100)
        current_process()._tempdir = tempdir
    return current_process()._tempdir

def prepare(data):
    '''
    Try to get current process ready to unpickle process object
    '''
    old_main_modules.append(sys.modules['__main__'])

    if 'name' in data:
        process.current_process().name = data['name']

    if 'authkey' in data:
        process.current_process()._authkey = data['authkey']

    if 'log_to_stderr' in data and data['log_to_stderr']:
        util.log_to_stderr()

    if 'log_level' in data:
        util.get_logger().setLevel(data['log_level'])

    if 'sys_path' in data:
        sys.path = data['sys_path']

    if 'sys_argv' in data:
        sys.argv = data['sys_argv']

    if 'dir' in data:
        os.chdir(data['dir'])

def get_temp_dir():
    # get name of a temp directory which will be automatically cleaned up
    if current_process()._tempdir is None:
        import shutil, tempfile
        tempdir = tempfile.mkdtemp(prefix='pymp-')
        info('created temp directory %s', tempdir)
        Finalize(None, shutil.rmtree, args=[tempdir], exitpriority=-100)
        current_process()._tempdir = tempdir
    return current_process()._tempdir

def prepare(data):
    '''
    Try to get current process ready to unpickle process object
    '''
    old_main_modules.append(sys.modules['__main__'])

    if 'name' in data:
        process.current_process().name = data['name']

    if 'authkey' in data:
        process.current_process()._authkey = data['authkey']

    if 'log_to_stderr' in data and data['log_to_stderr']:
        util.log_to_stderr()

    if 'log_level' in data:
        util.get_logger().setLevel(data['log_level'])

    if 'sys_path' in data:
        sys.path = data['sys_path']

    if 'sys_argv' in data:
        sys.argv = data['sys_argv']