message: pylint fix to remove range(len) with enumerate
diff: @@ -862,8 +862,8 @@ def _find_children_hints(call, graph_def):
  function_inputs = function_def.signature.input_arg
  assert len(inputs_outside_loop) == len(function_inputs)
  nodes_mapping = {}
  - for i, _ in enumerate(function_inputs):
  - nodes_mapping[function_inputs[i].name] = inputs_outside_loop[i]
  + for i, function_input in enumerate(function_inputs):
  + nodes_mapping[function_input.name] = inputs_outside_loop[i]
  # TODO(b/123050804): Consider use grappler.
  (children_hints_in_loop,
  new_nodes) = _find_children_hints_in_while_loop(
  @@ -1182,8 +1182,7 @@ def _convert_op_hints_to_stubs_helper(
  # Re-wire the children hints inputs/outputs, so latter child's inputs
  # connect to previous child node's outputs.
  children_inputs_mappings = hints[hint_uuid].children_inputs_mappings
  - for j in range(len(children_hints)):
  - child_hint = children_hints[j]
  + for j, child_hint in enumerate(children_hints):
  if j == 0:
  for mapping in children_inputs_mappings["parent_first_child_input"]:
  parent_input_index = _get_correct_mapping(
  @@ -1210,8 +1209,7 @@ def _convert_op_hints_to_stubs_helper(
  child_hint.outputs[child_output_index] = hints[hint_uuid].outputs[
  parent_output_index]
  - for j in range(len(children_hints)):
  - child_hint = children_hints[j]
  + for j, child_hint in enumerate(children_hints):
  curr_graph_def = _convert_single_op_hint_to_stub(
  child_hint, curr_graph_def, function_def_nodes,
  j == len(children_hints) - 1)
  