def case(pred_fn_pairs, default=None, exclusive=False, name='<STR_LIT>'):
return control_flow_ops._case_helper(  <EOL>cond, pred_fn_pairs, default, exclusive, name, allow_python_preds=True)<EOL>
Like tf.case, except attempts to statically evaluate predicates.

    If any predicate in `pred_fn_pairs` is a bool or has a constant value, the
    associated callable will be called or omitted depending on its value.
    Otherwise this functions like tf.case.

    Args:
      pred_fn_pairs: Dict or list of pairs of a boolean scalar tensor and a
                     callable which returns a list of tensors.
      default: Optional callable that returns a list of tensors.
      exclusive: True iff at most one predicate is allowed to evaluate to `True`.
      name: A name for this operation (optional).

    Returns:
      The tensors returned by the first pair whose predicate evaluated to True, or
      those returned by `default` if none does.

    Raises:
      TypeError: If `pred_fn_pairs` is not a list/dictionary.
      TypeError: If `pred_fn_pairs` is a list but does not contain 2-tuples.
      TypeError: If `fns[i]` is not callable for any i, or `default` is not
                 callable.