class_docstr: Tests all Exploration components and the deterministic flag for
  compute_action calls.
class_docstr_tok: ["Tests","all","Exploration","components","and","the","deterministic","flag","for","compute_action","calls","."]
code: def test_impala(self):
      config = (
          impala.ImpalaConfig()
          .environment("CartPole-v1")
          .rollouts(num_rollout_workers=0)
          .resources(num_gpus=0)
      )
      do_test_explorations(
          config,
          np.array([0.0, 0.1, 0.0, 0.0]),
          prev_a=np.array(0),
      )
  
file_path: ray/python/ray/rllib/utils/exploration/tests/test_explorations.py
imports: import numpy
  import sys
  import unittest
  import ray
  import ray.rllib.algorithms.dqn
  import ray.rllib.algorithms.impala
  import ray.rllib.algorithms.ppo
  import ray.rllib.algorithms.sac
  from ray.rllib.utils import check, framework_iterator
label_desc: Use image node_id 4 for calling the TestExplorations obj's underlying member method code with example usage: obj.test_impala() without return types