class_docstr: The parser for Python grammar files.
class_docstr_tok: ["The","parser","for","Python","grammar","files","."]
code: def __init__(self, bnf_grammar):
      self._bnf_grammar = bnf_grammar
      self.generator = tokenize(
          bnf_grammar, version_info=parse_version_string("3.6")
      )
      self._gettoken()
  
imports: from parso.python.tokenize import tokenize
  from parso.utils import parse_version_string
  from parso.python.token import PythonTokenTypes
label_desc: Use image node_id 1 to create a new GrammarParser object  with example: obj = GrammarParser(bnf_grammar)