tensorflow/models · error · ValueError

Only support binary relation in restriction.

Error message

Only support binary relation in restriction.

What it means

Error "Only support binary relation in restriction." thrown in tensorflow/models.

Source

Thrown at official/modeling/hyperparams/params_dict.py:282

    def _get_kv(dotted_string, params_dict):
      """Get keys and values indicated by dotted_string."""
      if _CONST_VALUE_RE.match(dotted_string) is not None:
        const_str = dotted_string
        if const_str == 'None':
          constant = None
        else:
          constant = float(const_str)
        return None, constant
      else:
        tokenized_params = dotted_string.split('.')
        v = params_dict
        for t in tokenized_params:
          v = v[t]
        return tokenized_params[-1], v

    def _get_kvs(tokens, params_dict):
      if len(tokens) != 2:
        raise ValueError('Only support binary relation in restriction.')
      stripped_tokens = [t.strip() for t in tokens]
      left_k, left_v = _get_kv(stripped_tokens[0], params_dict)
      right_k, right_v = _get_kv(stripped_tokens[1], params_dict)
      return left_k, left_v, right_k, right_v

    params_dict = self.as_dict()
    for restriction in self._restrictions:
      if '==' in restriction:
        tokens = restriction.split('==')
        _, left_v, _, right_v = _get_kvs(tokens, params_dict)
        if left_v != right_v:
          raise KeyError(
              'Found inconsistency between key `{}` and key `{}`.'.format(
                  tokens[0], tokens[1]))
      elif '!=' in restriction:
        tokens = restriction.split('!=')
        _, left_v, _, right_v = _get_kvs(tokens, params_dict)
        if left_v == right_v:

View on GitHub (pinned to e006f5f0d5)

When it happens

Trigger: Thrown at official/modeling/hyperparams/params_dict.py:282 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/e63e7e58b5848ee4. Report an issue: GitHub.