def reset(self, history=None):
if not history:<EOL><INDENT>history = dict()<EOL><DEDENT>self.episode_rewards = history.get("<STR_LIT>", list())<EOL>self.episode_timesteps = history.get("<STR_LIT>", list())<EOL>self.episode_times = history.get("<STR_LIT>", list())<EOL>
Resets the Runner's internal stats counters.
If history is empty, use default values in history.get().

Args:
    history (dict): A dictionary containing an already run experiment's results. Keys should be:
        episode_rewards (list of rewards), episode_timesteps (lengths of episodes), episode_times (run-times)