Add support for gymnasium v1.0

.github/workflows/ci.yml

@@ -20,7 +20,12 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.8", "3.9", "3.10", "3.11"]
-
+        include:
+          # Default version
+          - gymnasium-version: "1.0.0"
+          # Add a new config to test gym<1.0
+          - python-version: "3.10"
+            gymnasium-version: "0.29.1"
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}
@@ -36,19 +41,18 @@ jobs:
           # See https://github.com/astral-sh/uv/issues/1497
           uv pip install --system torch==2.4.1+cpu --index https://download.pytorch.org/whl/cpu
 
-          # Install Atari Roms
-          uv pip install --system autorom
-          wget https://gist.githubusercontent.com/jjshoots/61b22aefce4456920ba99f2c36906eda/raw/00046ac3403768bfe45857610a3d333b8e35e026/Roms.tar.gz.b64
-          base64 Roms.tar.gz.b64 --decode &> Roms.tar.gz
-          AutoROM --accept-license --source-file Roms.tar.gz
-
           # Install master version
           # and dependencies for docs and tests
-          uv pip install --system "stable_baselines3[extra_no_roms,tests,docs] @ git+https://github.com/DLR-RM/stable-baselines3"
+          uv pip install --system "stable_baselines3[extra,tests,docs] @ git+https://github.com/DLR-RM/stable-baselines3"
           uv pip install --system .
           # Use headless version
           uv pip install --system opencv-python-headless
 
+      - name: Install specific version of gym
+        run: |
+          uv pip install --system gymnasium==${{ matrix.gymnasium-version }}
+        # Only run for python 3.10, downgrade gym to 0.29.1
+
       - name: Lint with ruff
         run: |
           make lint

docs/conda_env.yml

@@ -8,7 +8,7 @@ dependencies:
   - python=3.11
   - pytorch=2.5.0=py3.11_cpu_0
   - pip:
-    - gymnasium>=0.28.1,<0.30
+    - gymnasium>=0.29.1,<1.1.0
     - stable-baselines3>=2.0.0,<3.0
     - cloudpickle
     - opencv-python-headless

docs/misc/changelog.rst

@@ -3,7 +3,7 @@
 Changelog
 ==========
 
-Release 2.4.0a10 (WIP)
+Release 2.4.0a11 (WIP)
 --------------------------
 
 **New algorithm: added CrossQ**
@@ -16,6 +16,7 @@ New Features:
 ^^^^^^^^^^^^^
 - Added ``CrossQ`` algorithm, from "Batch Normalization in Deep Reinforcement Learning" paper (@danielpalen)
 - Added ``BatchRenorm`` PyTorch layer used in ``CrossQ`` (@danielpalen)
+- Added support for Gymnasium v1.0
 
 Bug Fixes:
 ^^^^^^^^^^

pyproject.toml

@@ -40,6 +40,8 @@ env = ["PYTHONHASHSEED=0"]
 filterwarnings = [
     # Tensorboard warnings
     "ignore::DeprecationWarning:tensorboard",
+    # tqdm warning about rich being experimental
+    "ignore:rich is experimental",
 ]
 markers = ["slow: marks tests as slow (deselect with '-m \"not slow\"')"]
 

sb3_contrib/common/maskable/utils.py

@@ -16,7 +16,7 @@ def get_action_masks(env: GymEnv) -> np.ndarray:
     if isinstance(env, VecEnv):
         return np.stack(env.env_method(EXPECTED_METHOD_NAME))
     else:
-        return getattr(env, EXPECTED_METHOD_NAME)()
+        return env.get_wrapper_attr(EXPECTED_METHOD_NAME)()
 
 
 def is_masking_supported(env: GymEnv) -> bool:
@@ -35,4 +35,8 @@ def is_masking_supported(env: GymEnv) -> bool:
         except AttributeError:
             return False
     else:
-        return hasattr(env, EXPECTED_METHOD_NAME)
+        try:
+            env.get_wrapper_attr(EXPECTED_METHOD_NAME)
+            return True
+        except AttributeError:
+            return False

sb3_contrib/common/wrappers/time_feature.py

@@ -44,6 +44,7 @@ def __init__(self, env: gym.Env, max_steps: int = 1000, test_mode: bool = False)
         low, high = obs_space.low, obs_space.high
         low, high = np.concatenate((low, [0.0])), np.concatenate((high, [1.0]))  # type: ignore[arg-type]
         self.dtype = obs_space.dtype
+        low, high = low.astype(self.dtype), high.astype(self.dtype)
 
         if isinstance(env.observation_space, spaces.Dict):
             env.observation_space.spaces["observation"] = spaces.Box(

sb3_contrib/version.txt

@@ -1 +1 @@
-2.4.0a10
+2.4.0a11

setup.py

@@ -67,7 +67,7 @@
     packages=[package for package in find_packages() if package.startswith("sb3_contrib")],
     package_data={"sb3_contrib": ["py.typed", "version.txt"]},
     install_requires=[
-        "stable_baselines3>=2.4.0a6,<3.0",
+        "stable_baselines3>=2.4.0a11,<3.0",
     ],
     description="Contrib package of Stable Baselines3, experimental code.",
     author="Antonin Raffin",

tests/test_lstm.py

@@ -5,7 +5,7 @@
 import pytest
 from gymnasium import spaces
 from gymnasium.envs.classic_control import CartPoleEnv
-from gymnasium.wrappers.time_limit import TimeLimit
+from gymnasium.wrappers import TimeLimit
 from stable_baselines3.common.callbacks import EvalCallback
 from stable_baselines3.common.env_checker import check_env
 from stable_baselines3.common.env_util import make_vec_env
@@ -43,7 +43,7 @@ def __init__(self):
                 self.x_threshold * 2,
                 self.theta_threshold_radians * 2,
             ]
-        )
+        ).astype(np.float32)
         self.observation_space = spaces.Box(-high, high, dtype=np.float32)
 
     @staticmethod