code: def submit(cluster_config_file, docker, screen, tmux, stop, start,
             cluster_name, port_forward, script, script_args):
      
      assert not (screen and tmux), "Can specify only one of `screen` or `tmux`."
  
      if start:
          create_or_update_cluster(cluster_config_file, None, None, False, False,
                                   True, cluster_name)
  
      target = os.path.join("~", os.path.basename(script))
      rsync(cluster_config_file, script, target, cluster_name, down=False)
  
      cmd = " ".join(["python", target] + list(script_args))
      exec_cluster(cluster_config_file, cmd, docker, screen, tmux, stop, False,
                   cluster_name, port_forward)
docs: Uploads and runs a script on the specified cluster.
  
      The script is automatically synced to the following location:
  
          os.path.join("~", os.path.basename(script))