code: def _load_config_file(path: str) -> dict | None:
      """A helper for loading a config file from a path, and erroring
      appropriately if the file is malformed."""
      try:
          with open(path) as f:
              config = yaml.safe_load(f.read())
      except OSError:
          # Ignore permission errors
          return None
      except Exception as exc:
          raise ValueError(
              f"A dask config file at {path!r} is malformed, original error "
              f"message:\n\n{exc}"
          ) from None
      if config is not None and not isinstance(config, dict):
          raise ValueError(
              f"A dask config file at {path!r} is malformed - config files must have "
              f"a dict as the top level object, got a {type(config).__name__} instead"
          )
      return config
  
imports: from __future__ import annotations
  import ast
  import base64
  import builtins
  import json
  import os
  import site
  import sys
  import threading
  import warnings
  from collections.abc import Mapping, Sequence
  from typing import Any, Literal
  import yaml
  from dask.typing import no_default
label_desc: Use image node_id 5 for calling a global function with example usage: _load_config_file(path) and returns: config, None