code: def main():
      wandb.setup()
  
      workers = []
      for n in range(4):
          main_q = mp.Queue()
          proc_q = mp.Queue()
          p = mp.Process(
              target=process_child,
              kwargs=dict(n=n, main_q=main_q, proc_q=proc_q),
          )
          workers.append((p, main_q, proc_q))
  
      for p, _, _ in workers:
          p.start()
  
      # proceed after init
      main_sync(workers)
  
      # proceed after log
      main_sync(workers)
  
      # proceed after crash
      main_sync(workers)
  
      for p, _, _ in workers:
          p.join()
  
      print("done")
  
imports: import multiprocessing
  import shutil
  from typing import List
  import wandb
label_desc: Use image node_id 3 for calling a global function with example usage: main() without return types