tensorflow/models · error · KeyError

The value extracted with keys: %s is not a leaf of the dicti

Error message

The value extracted with keys: %s is not a leaf of the dictionary: %s.

What it means

Error "The value extracted with keys: %s is not a leaf of the dictionary: %s." thrown in tensorflow/models.

Source

Thrown at official/core/train_utils.py:66

    d: The dictionary to extract value from.
    keys: The list of keys to extract values recursively.

  Returns:
    The value of the leaf.

  Raises:
    KeyError: If the value of keys extracted is a dictionary.
  """
  leaf = d
  for k in keys:
    if not isinstance(leaf, dict) or k not in leaf:
      raise KeyError(
          'Path not exist while traversing the dictionary: d with keys'
          ': %s.' % keys)
    leaf = leaf[k]

  if isinstance(leaf, dict):
    raise KeyError('The value extracted with keys: %s is not a leaf of the '
                   'dictionary: %s.' % (keys, d))
  return leaf


def cast_leaf_nested_dict(d: Dict[str, Any],
                          cast_fn: Callable[[Any], Any]) -> Dict[str, Any]:
  """Cast the leaves of a dictionary with arbitrary depth in place.

  Args:
    d: The dictionary to extract value from.
    cast_fn: The casting function.

  Returns:
    A dictionray with the same structure as d.
  """
  for key, value in d.items():
    if isinstance(value, dict):
      d[key] = cast_leaf_nested_dict(value, cast_fn)

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/core/train_utils.py:66 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of tensorflow/models@e006f5f0d5 (2026-08-24). Data as JSON: /api/errors/a166a97c4dad4ba2. Report an issue: GitHub.