code: def init_ray_if_not(redis_address, redis_password):
      if not ray.is_initialized():
          init_params = dict(
              address=redis_address,
              ignore_reinit_error=True,
              namespace="bigdl",
          )
          if redis_password:
              init_params["_redis_password"] = redis_password
          ray.init(**init_params)
  
imports: from __future__ import annotations
  from collections import defaultdict
  import ray
  import ray._private.services
  import uuid
  import random
  from bigdl.orca.data import XShards
  from bigdl.orca.ray import OrcaRayContext
  import logging
  from bigdl.dllib.utils.log4Error import invalidInputError
  from numpy import ndarray
  from typing import TYPE_CHECKING, Any, Callable, DefaultDict, Dict, List, Tuple, Union, no_type_check
label_desc: Use image node_id 1 for calling a global function with example usage: init_ray_if_not(redis_address, redis_password) without return types