code: def _is_dict_of_numpy_array(x: Any) -> bool:
      return isinstance(x, dict) and all(
          isinstance(x[k], np.ndarray) for k in x
      )
  
file_path: determined/harness/determined/keras/_data.py
imports: import math
  from typing import Any, Dict, List, Optional, Tuple, Union
  import numpy
  import tensorflow
  import determined
  from determined import keras
  from determined.common import check
label_desc: Use image node_id 2 for calling a global function with example usage: _is_dict_of_numpy_array(x) and returns: unknown