code: def _get_pytorch_version():
      if "PYTORCH_VERSION" in os.environ:
          return f"torch=={os.environ['PYTORCH_VERSION']}"
      return "torch"
  
file_path: audio/setup.py
imports: import distutils.command.clean
  import os
  import re
  import shutil
  import subprocess
  from pathlib import Path
  import torch
  from setuptools import find_packages, setup
  from tools import setup_helpers
label_desc: Use image node_id 4 for calling a global function with example usage: _get_pytorch_version() and returns: str, str, os