docs: def start_in_oneshot_processes(obj, nb_process):
      """
      Start nb_process processes to do the job. Then process finish the job they die.
      """
      processes = []
      for i in range(nb_process):
          #  Simple process style
          p = Process(target=oneshot_in_process, args=(obj,))
          p.start()
          processes.append(p)
  
      for process in processes:
          # Wait all process finish
          process.join()