new_contents: # script to execute database building
  
  from pdf_lib.parallel_func import (save_data, learninglib_build,
                                     map_learninglib)
  from ipyparallel import Client
  
  rc = Client()
  dview = rc[:]
  
  def run_build(cif_dir):
      fn_list = sorted([f for f in os.listdir(cif_dir) if f.endswith('.cif')])
      full_fn_list = list(map(lambda x: os.path.join(cif_dir, x), fn_list))
      rv = dview.apply_async(learninglib_build, full_fn_list)
      save_data(rv)
  
subject: add example on how to run parallel func