code: def _all_runs(root):
      return [runlib.Run(name, path) for name, path in _iter_dirs(root)]
  
imports: import errno
  import functools
  import logging
  import os
  import shutil
  import tempfile
  from guild import config
  from guild import run
  from guild import util
label_desc: Use image node_id 17 for calling a global function with example usage: _all_runs(root) and returns: unknown