tensorflow/models · error · AttributeError

The key `{}` does not exist.

Error message

The key `{}` does not exist. 

What it means

Error "The key `{}` does not exist. " thrown in tensorflow/models.

Source

Thrown at official/modeling/hyperparams/params_dict.py:136

      if self._locked:
        raise ValueError('The ParamsDict has been locked. '
                         'No change is allowed.')
    self._set(k, v)

  def __getattr__(self, k):
    """Gets the value of the existing key.

    Args:
      k: the key string.

    Returns:
      the value of the key.

    Raises:
      AttributeError: if k is not defined in the ParamsDict.
    """
    if k not in self.__dict__.keys():
      raise AttributeError('The key `{}` does not exist. '.format(k))
    return self.__dict__[k]

  def __contains__(self, key):
    """Implements the membership test operator."""
    return key in self.__dict__

  def get(self, key, value=None):
    """Accesses through built-in dictionary get method."""
    return self.__dict__.get(key, value)

  def __delattr__(self, k):
    """Deletes the key and removes its values.

    Args:
      k: the key string.

    Raises:
      AttributeError: if k is reserverd or not defined in the ParamsDict.

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/modeling/hyperparams/params_dict.py:136 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/a55c8de68e09edd2. Report an issue: GitHub.