code: def __init__(self, pattern_list, dirname, sep):
      from pathspec.patterns.gitwildmatch import _DIR_MARK
  
      if pattern_list and isinstance(pattern_list[0], str):
          pattern_list = [
              PatternInfo(pattern, "") for pattern in pattern_list
          ]
  
      self.sep = sep
      self.pattern_list = pattern_list
      self.dirname = dirname
  
      self.regex_pattern_list = []
      for count, pattern in enumerate(pattern_list):
          pattern, group = GitWildMatchPattern.pattern_to_regex(
              pattern.patterns
          )
          if pattern:
              pattern = pattern.replace(
                  f"<{_DIR_MARK}>", f"<{_DIR_MARK}{count}>"
              )
              self.regex_pattern_list.append((pattern, group))
  
      self.ignore_spec = [
          (ignore, re.compile("|".join(item[0] for item in group)))
          for ignore, group in groupby(
              self.regex_pattern_list, lambda x: x[1]
          )
          if ignore is not None
      ]
  
imports: import os
  import re
  from collections import namedtuple
  from itertools import chain, groupby, takewhile
  from typing import TYPE_CHECKING, List, Optional
  from pathspec.patterns import GitWildMatchPattern
  from pathspec.util import normalize_file
  from pygtrie import Trie
  from dvc.fs import Schemes, localfs
  from dvc.log import logger
  from dvc.pathspec_math import PatternInfo, merge_patterns
label_desc: Use image node_id 1 to create a new DvcIgnorePatterns object from inherited base classes: DvcIgnore with example: obj = DvcIgnorePatterns(pattern_list, dirname, sep)