code: def main(root_dir):
      check_and_cythonize(root_dir)
  
file_path: pyflux/tools/cythonize.py
imports: from __future__ import division, print_function, absolute_import
  import os
  import re
  import sys
  import hashlib
  import subprocess
label_desc: Use image node_id 9 for calling a global function with example usage: main(root_dir) without return types