code: def test_run_after_shutdown(self):
      self.executor.shutdown()
      self.assertRaises(RuntimeError, self.executor.submit, pow, 2, 5)
  
imports: import signal
  import sys
  import threading
  import time
  import unittest
  from concurrent import futures
  from test import support
  from test.support.script_helper import assert_python_ok
  from .util import BaseTestCase, ThreadPoolMixin, ProcessPoolForkMixin, ProcessPoolForkserverMixin, ProcessPoolSpawnMixin, create_executor_tests, setup_module
label_desc: Use image node_id 1 for calling the ExecutorShutdownTest obj's underlying member method code with example usage: obj.test_run_after_shutdown() without return types