code: def hostname() -> str:
      """Returns host name for current process within current distributed configuration."""
      return socket.gethostname()
  
imports: import socket
  from contextlib import contextmanager
  from functools import wraps
  from typing import Any, Callable, List, Mapping, Optional, Tuple, Union
  import torch
  from ignite.distributed.comp_models import _SerialModel, has_hvd_support, has_native_dist_support, has_xla_support, registered_computation_models
  from ignite.utils import setup_logger
label_desc: Use image node_id 12 for calling a global function with example usage: hostname() and returns: socket