class_docstr: A fake seed stream class that always generates a deterministic seed.
class_docstr_tok: ["A","fake","seed","stream","class","that","always","generates","a","deterministic","seed","."]
code: def __init__(self, seed, salt=""):
      del salt
      self._seed = seed
  
imports: from absl import flags
  from absl.testing import parameterized
  import numpy
  import tensorflow
  from tf_agents.agents.ppo import ppo_actor_network
  from tf_agents.agents.ppo import ppo_agent
  from tf_agents.agents.ppo import ppo_policy
  from tf_agents.distributions import utils
  from tf_agents.networks import actor_distribution_network
  from tf_agents.networks import value_network
  from tf_agents.specs import tensor_spec
  from tf_agents.trajectories import time_step
  from tf_agents.trajectories import trajectory
  from tf_agents.utils import test_utils
label_desc: Use image node_id 1 to create a new DeterministicSeedStream object from inherited base classes: object with example: obj = DeterministicSeedStream(seed, salt)