code: def _fill_missing_operator_names(ops):
      """
      Give missing operators a name.
      We expect C2 operators to be generally unnamed. This gives them a scope
      (inferred from their outputs) and a name after their type. Duplicates will
      be postfixed by an index.
  
      Args:
          ops: List of Caffe2 operators to assign names to.
  
      Returns:
          None: Modifies 'ops' in-place.
      """
      seen = set()
      for op in ops:
          # Make sure operator names don't collide with blobs.
          seen.update(op.input)
          seen.update(op.output)
      for op in ops:
          if op.name:
              name = op.name
          elif op.output or op.input:
              name_list = [
                  os.path.dirname(name)
                  for name in op.output or op.input
              ]
              scope = os.path.commonprefix(name_list)
              name = os.path.join(scope, op.type)
          else:
              name = op.type
          assert name
          op.name = _make_unique_name(seen, name)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import copy
  import logging
  import os
  import re
  from builtins import bytes
  from caffe2.proto import caffe2_pb2
  from caffe2.python import core, workspace
  from .proto.graph_pb2 import GraphDef
  from .proto.node_def_pb2 import NodeDef
  from .proto.tensor_shape_pb2 import TensorShapeProto
label_desc: Use image node_id 9 for calling a global function with example usage: _fill_missing_operator_names(ops) without return types