code: def dvc_venvs():
      return {}
  
imports: import os
  import shutil
  from pathlib import Path
  from subprocess import check_output
  from typing import Dict, Optional
  import pytest
  from dulwich.porcelain import clone
  from funcy import first
  from packaging import version
  from dvc.types import StrPath
label_desc: Use image node_id 4 for calling a global function with example usage: dvc_venvs() and returns: dict