ray/rllib/contrib/alpha_zero/environments/cartpole.py
Avnish Narayan 026bf01071
[RLlib] Upgrade gym version to 0.21 and deprecate pendulum-v0. (#19535)
* Fix QMix, SAC, and MADDPA too.

* Unpin gym and deprecate pendulum v0

Many tests in rllib depended on pendulum v0,
however in gym 0.21, pendulum v0 was deprecated
in favor of pendulum v1. This may change reward
thresholds, so will have to potentially rerun
all of the pendulum v1 benchmarks, or use another
environment in favor. The same applies to frozen
lake v0 and frozen lake v1

Lastly, all of the RLlib tests and have
been moved to python 3.7

* Add gym installation based on python version.

Pin python<= 3.6 to gym 0.19 due to install
issues with atari roms in gym 0.20

* Reformatting

* Fixing tests

* Move atari-py install conditional to req.txt

* migrate to new ale install method

* Fix QMix, SAC, and MADDPA too.

* Unpin gym and deprecate pendulum v0

Many tests in rllib depended on pendulum v0,
however in gym 0.21, pendulum v0 was deprecated
in favor of pendulum v1. This may change reward
thresholds, so will have to potentially rerun
all of the pendulum v1 benchmarks, or use another
environment in favor. The same applies to frozen
lake v0 and frozen lake v1

Lastly, all of the RLlib tests and have
been moved to python 3.7
* Add gym installation based on python version.

Pin python<= 3.6 to gym 0.19 due to install
issues with atari roms in gym 0.20

Move atari-py install conditional to req.txt

migrate to new ale install method

Make parametric_actions_cartpole return float32 actions/obs

Adding type conversions if obs/actions don't match space

Add utils to make elements match gym space dtypes

Co-authored-by: Jun Gong <jungong@anyscale.com>
Co-authored-by: sven1977 <svenmika1977@gmail.com>
2021-11-03 16:24:00 +01:00

46 lines
1.3 KiB
Python

from copy import deepcopy
import gym
import numpy as np
from gym.spaces import Discrete, Dict, Box
class CartPole:
"""
Wrapper for gym CartPole environment where the reward
is accumulated to the end
"""
def __init__(self, config=None):
self.env = gym.make("CartPole-v0")
self.action_space = Discrete(2)
self.observation_space = Dict({
"obs": self.env.observation_space,
"action_mask": Box(low=0, high=1, shape=(self.action_space.n, ))
})
self.running_reward = 0
def reset(self):
self.running_reward = 0
return {
"obs": self.env.reset(),
"action_mask": np.array([1, 1], dtype=np.float32)
}
def step(self, action):
obs, rew, done, info = self.env.step(action)
self.running_reward += rew
score = self.running_reward if done else 0
return {
"obs": obs,
"action_mask": np.array([1, 1], dtype=np.float32)
}, score, done, info
def set_state(self, state):
self.running_reward = state[1]
self.env = deepcopy(state[0])
obs = np.array(list(self.env.unwrapped.state))
return {"obs": obs, "action_mask": np.array([1, 1], dtype=np.float32)}
def get_state(self):
return deepcopy(self.env), self.running_reward