code: def get_local_rank():
      """
      Helper function to get local rank after a backend has been set and initialized
      Args:
          None
      Returns:
          local rank (= GPU device ID)
      """
      global cdb
      assert (
          cdb is not None and cdb.is_initialized()
      ), "DeepSpeed backend not set, please initialize it using init_process_group()"
      return get_local_rank_from_launcher()
  
imports: import torch
  import os
  from ..constants import TORCH_DISTRIBUTED_DEFAULT_PORT, default_pg_timeout
  from .constants import *
  from .reduce_op import *
  from deepspeed.accelerator import get_accelerator
  from deepspeed.comm.ccl import CCLBackend
  from deepspeed.utils.comms_logging import CommsLogger
  from deepspeed.utils import timer, get_caller_func
  from deepspeed.comm.torch import TorchBackend
  from deepspeed import utils
  from datetime import timedelta
  from deepspeed.comm.utils import *
label_desc: Use image node_id 40 for calling a global function with example usage: get_local_rank() and returns: get_local_rank_from_launcher