Error! TimeLimit' object has no attribute 'ale'

[tangyudi]

I run this code in cpu and this error occurred.

TimeLimit' object has no attribute 'ale' Can anyone show me how to solve this matter?
Thank you !

[Lan1991Xu]

Hi, you can just pip install gym==0.7.0 solve this problem. This is because new gym 0.8.0 released and it is hard to use for this code.

[tangyudi]

@Lan1991Xu Thanky you!
Can I test with this check point? When I use python main.py --is_train=False --display=True,it occur a load failed error.

[DanielTakeshi]

I'm also running into this problem. How would we use this for the latest version of gym?

[cteckwee]

Try to unwrap the env
env = env.unwrapped

[scratch314]

Only Breakout can be applied.
Try the following code.

def init(self, config):
self.step_info = None

def _step(self, action):
self._screen, self.reward, self.terminal, self.step_info = self.env.step(action)

def lives(self):
if self.step_info is None:
return 0
else:
return self.step_info['ale.lives']

[fanyuzeng]

How to solve this problem? I try pip install gym==0.7.0, but it failed. In addition, I try the following code in main.py , it also failed.

def init(self, config):
self.step_info = None

def _step(self, action):
self._screen, self.reward, self.terminal, self.step_info = self.env.step(action)

def lives(self):
if self.step_info is None:
return 0
else:
return self.step_info['ale.lives']

[mumbho]

I have the same issue; tried to revert gym to 0.7.4 and 0.7.3 (from repo) but then atari games will render as text. I've tried with other gym versions as well. I can only render atari envs using the latest version, but then dqn breaks. Any solution is greatly appreciated.
When using latest gym version, tried to unwrap env as suggested, got into another issue:
in /home/me/work/bitbucket/NeuralNetworks/My/dependencies/gym/gym/wrappers/time_limit.py
error: Cannot call env.step() before calling reset()