class_docstr: Associates placement of an entity with a single device.
  
  Args:
      device(:class:`torch.distributed._remote_device`): The device to place the entity on.
class_docstr_tok: ["Associates","placement","of","an","entity","with","a","single","device",".","Args",":","device","(",":","class",":","`","torch.distributed._remote_device","`",")",":","The","device","to","place","the","entity","on","."]
code: def __post_init__(self):
      if not isinstance(self.device, torch.distributed._remote_device):
          self.device = torch.distributed._remote_device(self.device)
  
imports: from abc import ABC, abstractmethod
  from dataclasses import dataclass
  import functools
  from typing import Callable, Dict, List, TYPE_CHECKING
  import torch
  from ._internals import check_tensor, get_chunked_dim_size, get_split_size, validate_non_overlapping_shards_metadata
  from torch.distributed._shard.metadata import ShardMetadata
  import torch.distributed._shard.sharded_tensor.metadata
  from torch.distributed._shard.op_registry_utils import _decorator_func
label_desc: Use image node_id 1 for calling the DevicePlacementSpec obj's underlying member method code with example usage: obj.__post_init__() without return types