mirror of
https://github.com/vale981/ray
synced 2025-03-06 10:31:39 -05:00
60d4d5e1aa
* Remove all __future__ imports from RLlib. * Remove (object) again from tf_run_builder.py::TFRunBuilder. * Fix 2xLINT warnings. * Fix broken appo_policy import (must be appo_tf_policy) * Remove future imports from all other ray files (not just RLlib). * Remove future imports from all other ray files (not just RLlib). * Remove future import blocks that contain `unicode_literals` as well. Revert appo_tf_policy.py to appo_policy.py (belongs to another PR). * Add two empty lines before Schedule class. * Put back __future__ imports into determine_tests_to_run.py. Fails otherwise on a py2/print related error.
64 lines
1.9 KiB
Python
64 lines
1.9 KiB
Python
import unittest
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import ray
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from ray.rllib.agents.dqn import DQNTrainer
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from ray.tune.registry import register_env
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import numpy as np
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import gym
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class TestReproducibility(unittest.TestCase):
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def testReproducingTrajectory(self):
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class PickLargest(gym.Env):
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def __init__(self):
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self.observation_space = gym.spaces.Box(
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low=float("-inf"), high=float("inf"), shape=(4, ))
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self.action_space = gym.spaces.Discrete(4)
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def reset(self, **kwargs):
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self.obs = np.random.randn(4)
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return self.obs
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def step(self, action):
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reward = self.obs[action]
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return self.obs, reward, True, {}
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def env_creator(env_config):
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return PickLargest()
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trajs = list()
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for trial in range(3):
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ray.init()
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register_env("PickLargest", env_creator)
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agent = DQNTrainer(
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env="PickLargest",
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config={"seed": 666 if trial in [0, 1] else 999})
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trajectory = list()
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for _ in range(8):
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r = agent.train()
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trajectory.append(r["episode_reward_max"])
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trajectory.append(r["episode_reward_min"])
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trajs.append(trajectory)
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ray.shutdown()
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# trial0 and trial1 use same seed and thus
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# expect identical trajectories.
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all_same = True
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for v0, v1 in zip(trajs[0], trajs[1]):
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if v0 != v1:
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all_same = False
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self.assertTrue(all_same)
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# trial1 and trial2 use different seeds and thus
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# most rewards tend to be different.
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diff_cnt = 0
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for v1, v2 in zip(trajs[1], trajs[2]):
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if v1 != v2:
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diff_cnt += 1
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self.assertTrue(diff_cnt > 8)
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if __name__ == "__main__":
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unittest.main(verbosity=2)
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