from the example -
since the `mp_hander`` runs

cmd = [sys.executable, sys.argv[0],
               '--counter', str(counter - 1),
               '--num_workers', str(args.num_workers),
               '--use-subprocess' if args.subprocess else '--no-subprocess']
p = subprocess.Popen(cmd, cwd=os.getcwd())

can I run another subprocess in the mp_worker ?