def policy(self, obs, epsilon):
        if self.random_state.rand() < epsilon:
            return self.rollout_policy.action(obs) 
        else:
            return self.dqn_policy.action(obs)
e-greedy policy with customazible rollout
dataset/ETHPy150Open sisl/Chimp/chimp/agents/dqn_agent.py/DQNAgent.policy