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1# !pip gymnasium huggingface-sb3 stable_baselines3[extra]
2import gymnasium as gym
3from huggingface_sb3 import load_from_hub
4from stable_baselines3 import PPO
5from stable_baselines3.common.vec_env import DummyVecEnv
6from stable_baselines3.common.evaluation import evaluate_policy
7from stable_baselines3.common.monitor import Monitor
8
9repo_id = "karthikk1006/ppo-LunarLander-v2"
10filename = "ppo-LunarLander-v2.zip"
11eval_env = gym.make("LunarLander-v2", render_mode="human")
12
13checkpoint = load_from_hub(repo_id, filename)
14model = PPO.load(checkpoint,print_system_info=True)
15
16mean_reward, std_reward = evaluate_policy(model,eval_env, n_eval_episodes=10, deterministic=True)
17print(f"mean_reward={mean_reward:.2f} +/- {std_reward}")
18
19# Enjoy trained agent
20observation, info = eval_env.reset()
21for _ in range(1000):
22 action, _states = model.predict(observation, deterministic=True)
23 observation, rewards, terminated, truncated, info = eval_env.step(action)
24 eval_env.render()
25
26...