code: def is_singleton_tensor(x: Any) -> bool:
      """Is x a dimensionless tensor?"""
      return torch.is_tensor(x) and x.dim() == 0
  
file_path: fairscale/fairscale/nn/data_parallel/fsdp_optim_utils.py
imports: import copy
  from itertools import groupby
  from typing import TYPE_CHECKING, Any, Dict, Iterator, List, Tuple, cast
  import torch
  from fairscale.nn.misc import FlattenParamsWrapper
label_desc: Use image node_id 6 for calling a global function with example usage: is_singleton_tensor(x) and returns: unknown