class_docstr: Manages a PyTorch model for training.
docstr: Returns the IP address of the current node.
docstr_tok: ["Returns","the","IP","address","of","the","current","node","."]
code: def get_node_ip(self):
      """Returns the IP address of the current node."""
      return ray._private.services.get_node_ip_address()
  
file_path: BigDL/python/orca/src/bigdl/orca/learn/pytorch/pytorch_ray_worker.py
imports: import ray
  import copy
  from bigdl.orca.learn.pytorch.utils import find_free_port
  from bigdl.orca.learn.pytorch.torch_runner import TorchRunner
  import torch.nn
  from torch.utils.data import IterableDataset
  import logging
  from bigdl.dllib.utils.log4Error import *
label_desc: Use image node_id 4 for calling the PytorchRayWorker obj's underlying member method code with example usage: obj.get_node_ip() and returns: ray