code: def spawn_workers(n_workers):
      from ipyparallel.apps.ipengineapp import launch_new_instance
  
      pids = []
      import os
  
      for _ in range(n_workers):
          pid = os.fork()
          if pid == 0:
              launch_new_instance()
          else:
              pids.append(pid)
  
      # launch_new_instance()
      return pids
  
imports: import time
  import fiber
  import multiprocessing
  import logging
  import subprocess
  import argparse
  from pprint import pprint
label_desc: Use image node_id 3 for calling a global function with example usage: spawn_workers(n_workers) and returns: pids