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 setUpClass(cls):
      ray.init()
  
file_path: 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 1 for calling the TestExplorations obj's underlying member method code with example usage: obj.setUpClass(cls) without return types