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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 export(self, remote_function):
 """Export a remote function. Args: remote_function: the RemoteFunction object. """

        if self._worker.mode is None:
            # If the worker isn't connected, cache the function
            # and export it later.
            self._functions_to_export.append(remote_function)
            return
        if self._worker.mode != ray.worker.SCRIPT_MODE:
            # Don't need to export if the worker is not a driver.
            return
        self._do_export(remote_function)