code: def init_env():
      if build_from_source():
          print("Start to build distributed package")
          print("HOME OF ANALYTICS ZOO: " + analytics_zoo_home)
          dist_source = analytics_zoo_home + "/dist"
          if not os.path.exists(dist_source):
              print(building_error_msg)
              sys.exit(-1)
          if os.path.exists(TEMP_PATH):
              rmtree(TEMP_PATH)
          copytree(dist_source, TEMP_PATH)
          copyfile(
              analytics_zoo_home + "/pyzoo/zoo/models/__init__.py",
              TEMP_PATH + "/__init__.py",
          )
      else:
          print("Do nothing for release installation")
  
file_path: analytics-zoo/pyzoo/setup.py
imports: import os
  import sys
  from shutil import copyfile, copytree, rmtree
  import fnmatch
  from setuptools import setup
label_desc: Use image node_id 3 for calling a global function with example usage: init_env() without return types