def plot_eval_reward(self):
        try:
            from matplotlib import pyplot
        except __HOLE__:
            "Can not plot loss, matplotlib required"
        pyplot.plot(self.eval_every * np.arange(len(self.r_eval)), self.r_eval)
        pyplot.xlabel("Reward")
        pyplot.ylabel("Loss")
        pyplot.show()
dataset/ETHPy150Open sisl/Chimp/chimp/agents/dqn_agent.py/DQNAgent.plot_eval_reward