code: def locate_windows_llvm():
      # first check if the LLVM_HOME env variable is in use
      if "LLVM_HOME" in os.environ:
          home = os.environ["LLVM_HOME"]
          return os.path.join(home, "bin", "clang.exe")
      else:
          # otherwise, search the PATH for clang.exe
          clang = find_in_path("clang.exe", os.environ["PATH"])
          if clang is None:
              clang = r"C:\Program Files\LLVM\bin\clang.exe"
          return clang
  
imports: import shutil
  import os
  from setuptools import Extension, setup
  import contextlib
  import io
  import os.path
  import json
  import tempfile
  from setuptools.command.build_ext import build_ext, new_compiler
  from Cython.Build import cythonize
  import subprocess
  import sys
  import platform
  import numpy
label_desc: Use image node_id 2 for calling a global function with example usage: locate_windows_llvm() and returns: os, clang