code: def dvc_attr(run, name):
      dvc_attrs = run.get_opdef_attr("dvc") or run.get("dvc") or {}
      return dvc_attrs.get(name)
  
imports: import json
  import logging
  import os
  import subprocess
  import yaml
  from guild import util
  from guild import var
label_desc: Use image node_id 18 for calling a global function with example usage: dvc_attr(run, name) and returns: dvc_attrs