code: def get_world_size(group=None) -> int:
      """
      Returns the number of processes in the current process group
      Args:
          group (ProcessGroup, optional): The process group to work on. If None,
              the default process group will be used.
      Returns:
          The world size of the process group
          -1, if not part of the group
      """
      global cdb
  
      assert (
          cdb is not None and cdb.is_initialized()
      ), "DeepSpeed backend not set, please initialize it using init_process_group()"
      return cdb.get_world_size(group)
  
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 38 for calling a global function with example usage: get_world_size(group) and returns: cdb