code: def __init__(self, env):
      super().__init__(env.observation_space, env.action_space)
  
file_path: nni/test/algo/nas/strategy/test_rl_impl.py
imports: from functools import partial
  import numpy
  import pytest
  from tianshou.data import ReplayBuffer, Batch
  from tianshou.policy import BasePolicy
  from nni.mutable import Categorical, Numerical, CategoricalMultiple, MutableDict, MutableList, ExpressionConstraint
  from nni.nas.strategy._rl_impl import TuningTrajectoryGenerator, default_policy_fn
label_desc: Use image node_id 1 to create a new HiddenStatePolicy object from inherited base classes: BasePolicy with example: obj = HiddenStatePolicy(env)