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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 _cleanup_markers(context_id, task_ids):
 """Delete the FuriousAsyncMarker entities corresponding to ids."""


    logging.debug("Cleanup %d markers for Context %s",
                  len(task_ids), context_id)

    # TODO: Handle exceptions and retries here.
    delete_entities = [ndb.Key(FuriousAsyncMarker, id) for id in task_ids]
    delete_entities.append(ndb.Key(FuriousCompletionMarker, context_id))

    ndb.delete_multi(delete_entities)

    logging.debug("Markers cleaned.")