code: def _validate_py_syntax(filename):
      # see also https://github.com/open-mmlab/mmcv/blob/master/mmcv/utils/config.py
      with PathManager.open(filename, "r") as f:
          content = f.read()
      try:
          ast.parse(content)
      except SyntaxError as e:
          raise SyntaxError(
              f"Config file {filename} has syntax error!"
          ) from e
  
imports: import ast
  import builtins
  import collections.abc
  import importlib
  import inspect
  import logging
  import os
  import uuid
  from contextlib import contextmanager
  from copy import deepcopy
  from dataclasses import is_dataclass
  from typing import List, Tuple, Union
  import cloudpickle
  import yaml
  from omegaconf import DictConfig, ListConfig, OmegaConf, SCMode
  from detectron2.utils.file_io import PathManager
  from detectron2.utils.registry import _convert_target_to_string
label_desc: Use image node_id 2 for calling a global function with example usage: _validate_py_syntax(filename) without return types