code: def _is_path(val):
      return (
          isinstance(val, str)
          and os.path.sep in val
          and os.path.exists(val)
      )
  
imports: import logging
  import os
  import re
  import yaml
  from guild import util
  from guild import yaml_util
label_desc: Use image node_id 38 for calling a global function with example usage: _is_path(val) and returns: unknown