code: def test_create_async_vector_env(shared_memory):
      env_fns = [make_env("CartPole-v1", i) for i in range(8)]
  
      env = AsyncVectorEnv(env_fns, shared_memory=shared_memory)
      assert env.num_envs == 8
      env.close()
  
imports: import re
  from multiprocessing import TimeoutError
  import numpy
  import pytest
  from gym.error import AlreadyPendingCallError, ClosedEnvironmentError, NoAsyncCallError
  from gym.spaces import Box, Discrete, MultiDiscrete, Tuple
  from gym.vector.async_vector_env import AsyncVectorEnv
  from tests.vector.utils import CustomSpace, make_custom_space_env, make_env, make_slow_env
label_desc: Use image node_id 1 for calling a global function with example usage: test_create_async_vector_env(shared_memory) without return types