code: def subfinder(mylist, pattern):
      matches = []
      indices = []
      for idx, i in enumerate(range(len(mylist))):
          if (
              mylist[i] == pattern[0]
              and mylist[i : i + len(pattern)] == pattern
          ):
              matches.append(pattern)
              indices.append(idx)
      if matches:
          return matches[0], indices[0]
      else:
          return None, 0
  
imports: import collections
  import os
  import sys
  import unicodedata
  from typing import Dict, List, Optional, Tuple, Union
  from ...tokenization_utils import AddedToken, PreTrainedTokenizer, _is_control, _is_punctuation, _is_whitespace
  from ...tokenization_utils_base import BatchEncoding, EncodedInput, PreTokenizedInput, TextInput, TextInputPair, TruncationStrategy
  from ...utils import PaddingStrategy, TensorType, add_end_docstrings, logging
label_desc: Use image node_id 3 for calling a global function with example usage: subfinder(mylist, pattern) and returns: matches,  indices, None,  int