code: def copy_files():
      if os.path.isdir("compile"):
          shutil.rmtree("compile")
      src_list = ["demo", "gtest", "scripts", "src"]
      for src in src_list:
          dst = "compile/{}".format(src)
          if os.path.isdir(dst):
              shutil.rmtree(dst)
          shutil.copytree("../{}".format(src), dst)
      shutil.copy("../CMakeLists.txt", "compile")
      # create empty python-package for cmake
      os.makedirs("compile/python-package")
      open("compile/python-package/CMakeLists.txt", "w")
  
imports: from __future__ import absolute_import
  import os
  import subprocess
  import shutil
  import sys
  from setuptools import find_packages
  from setuptools import setup
  from setuptools.command.build_py import build_py
  from setuptools.command.install import install
  from setuptools.command.sdist import sdist
label_desc: Use image node_id 2 for calling a global function with example usage: copy_files() without return types