ray 에서 로그를 모두 확인하고자 할 때에는 위 내용이 필요하다고 한다. 이것을 선언하는 위치가 중요하다.
import os
os.environ['RAY_DEDUP_LOGS'] = '0'
import ray
ray 를 불러오기 전에 해야 한다.

How to set RAY_DEDUP_LOGS=0 – Ray Core – Ray
Hi @cade Sorry for my late reply. I’ve just been running the code below: import os import numpy as np import gymnasium from gymnasium.spaces import Discrete, Box from gymnasium.wrappers import ResizeObservation import ray from ray.tune.registry import register_env import ray.rllib.algorithms.impala as impala from ray.tune.logger import pretty_print config = { “observation_space”: Box( low=0, high=255, shape=(72, 128, 3), dtype=np.uint8)…