code: def __init__(self, version_info, bnf_text):
      super(PythonGrammar, self).__init__(
          bnf_text,
          tokenizer=self._tokenize_lines,
          parser=PythonParser,
          diff_parser=DiffParser,
      )
      self.version_info = version_info
  
imports: import hashlib
  import os
  import sys
  import pkgutil
  from parso._compatibility import FileNotFoundError, is_pypy
  from parso.pgen2 import generate_grammar
  from parso.utils import split_lines, python_bytes_to_unicode, parse_version_string
  from parso.python.diff import DiffParser
  from parso.python.tokenize import tokenize_lines, tokenize
  from parso.python.token import PythonTokenTypes
  from parso.cache import parser_cache, load_module, try_to_save_module
  from parso.parser import BaseParser
  from parso.python.parser import Parser
  from parso.python.errors import ErrorFinderConfig
  from parso.python import pep8
  from parso.file_io import FileIO, KnownContentFileIO
  from parso.normalizer import RefactoringNormalizer
label_desc: Use image node_id 1 to create a new PythonGrammar object from inherited base classes: Grammar with example: obj = PythonGrammar(version_info, bnf_text)