code: def find_runs(run_id_prefix, root=None):
      root = root or runs_dir()
      return (
          (name, path)
          for name, path in _iter_dirs(root)
          if name.startswith(run_id_prefix)
      )
  
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 31 for calling a global function with example usage: find_runs(run_id_prefix, root) and returns: unknown