code: def _is_generated_index_name(name):
      pattern = r"^__index_level_\d+__$"
      return re.match(pattern, name) is not None
  
imports: import ast
  from collections.abc import Sequence
  from concurrent import futures
  import concurrent.futures.thread
  from copy import deepcopy
  from itertools import zip_longest
  import json
  import operator
  import re
  import warnings
  import numpy
  import pyarrow
  from pyarrow.lib import _pandas_api, frombytes
label_desc: Use image node_id 29 for calling a global function with example usage: _is_generated_index_name(name) and returns: unknown