code: def generate_grammar(filename: Path = "Grammar.txt") -> PgenGrammar:
      p = ParserGenerator(filename)
      return p.make_grammar()
  
imports: import os
  from typing import IO, Any, Dict, Iterator, List, NoReturn, Optional, Sequence, Tuple, Union
  from blib2to3.pgen2 import grammar, token, tokenize
  from blib2to3.pgen2.tokenize import GoodTokenInfo
  import pkgutil
  import io
label_desc: Use image node_id 1 for calling a global function with example usage: generate_grammar(filename) and returns: p