Can't load roms in gym

[Shivam310]

Issue summary

[Hi, I was setting up my project on a new pc and when I run my code I get this error:

---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
Input In [1], in <cell line: 2>()
      1 #Import Dependencies
----> 2 import gym
      3 from stable_baselines3 import A2C
      4 from stable_baselines3.common.vec_env import VecFrameStack

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\gym\__init__.py:15, in <module>
      7 from gym.core import (
      8     Env,
      9     Wrapper,
   (...)
     12     RewardWrapper,
     13 )
     14 from gym.spaces import Space
---> 15 from gym.envs import make, spec, register
     16 from gym import logger
     17 from gym import vector

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\gym\envs\__init__.py:5, in <module>
      2 from gym.envs.registration import make, register, registry, spec
      4 # Hook to load plugins from entry points
----> 5 _load_env_plugins()
      8 # Classic
      9 # ----------------------------------------
     11 register(
     12     id="CartPole-v0",
     13     entry_point="gym.envs.classic_control.cartpole:CartPoleEnv",
     14     max_episode_steps=200,
     15     reward_threshold=195.0,
     16 )

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\gym\envs\registration.py:321, in load_env_plugins(entry_point)
    314         logger.warn(
    315             f"The environment namespace magic key `{plugin.name}` is unsupported. "
    316             "To register an environment at the root namespace you should specify "
    317             "the `__root__` namespace."
    318         )
    320 with context:
--> 321     fn = plugin.load()
    322     try:
    323         fn()

File ~\AppData\Local\Programs\Python\Python310\lib\importlib\metadata\__init__.py:171, in EntryPoint.load(self)
    166 """Load the entry point from its definition. If only a module
    167 is indicated by the value, return that module. Otherwise,
    168 return the named object.
    169 """
    170 match = self.pattern.match(self.value)
--> 171 module = import_module(match.group('module'))
    172 attrs = filter(None, (match.group('attr') or '').split('.'))
    173 return functools.reduce(getattr, attrs, module)

File ~\AppData\Local\Programs\Python\Python310\lib\importlib\__init__.py:126, in import_module(name, package)
    124             break
    125         level += 1
--> 126 return _bootstrap._gcd_import(name[level:], package, level)

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\ale_py\gym.py:5, in <module>
      1 from collections import defaultdict, namedtuple
      3 from gym.envs.registration import register
----> 5 from ale_py.roms.utils import rom_name_to_id, rom_id_to_name
      8 GymFlavour = namedtuple("GymFlavour", ["suffix", "env_kwargs", "kwargs"])
      9 GymConfig = namedtuple("GymConfig", ["version", "env_kwargs", "flavours"])

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\ale_py\roms\__init__.py:89, in <module>
     85     return roms
     88 # Resolve all ROMs
---> 89 ROMS = resolve_roms()
     90 __all__ = list(ROMS.keys())
     93 def __dir__() -> List[str]:

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\ale_py\roms\__init__.py:40, in resolve_roms()
     36 for package in ROM_PLUGINS:
     38     try:
     39         # Resolve supported / unsupported roms
---> 40         supported, unsupported = package.resolve()
     42         # We'll now get the update delta. The reason for this is two fold:
     43         #     1) We should only display atari-py deprecation when it would have
     44         #        imported ROMs.
     45         #     2) ROM priority holds. When you import ROMs they'll all come from
     46         #        a single source of truth.
     47         #
     48         roms_delta_keys = list(
     49             filter(lambda rom: rom not in roms, supported.keys())
     50         )

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\ale_py\roms\utils.py:60, in SupportedPackage.resolve(self)
     56 unsupported: List[pathlib.Path] = []
     58 # Iterate over all ROMs in the specified package
     59 for resource in filter(
---> 60     lambda file: file.suffix == ".bin", resources.files(self.package).iterdir()
     61 ):
     62     resolved = resource.resolve()
     63     rom = ALEInterface.isSupportedROM(resolved)

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\importlib_resources\_common.py:22, in files(package)
     17 def files(package):
     18     # type: (Package) -> Traversable
     19     """
     20     Get a Traversable resource from a package
     21     """
---> 22     return from_package(get_package(package))

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\importlib_resources\_common.py:53, in get_package(package)
     47 def get_package(package):
     48     # type: (Package) -> types.ModuleType
     49     """Take a package name or module object and return the module.
     50 
     51     Raise an exception if the resolved module is not a package.
     52     """
---> 53     resolved = resolve(package)
     54     if wrap_spec(resolved).submodule_search_locations is None:
     55         raise TypeError(f'{package!r} is not a package')

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\importlib_resources\_common.py:44, in resolve(cand)
     42 def resolve(cand):
     43     # type: (Package) -> types.ModuleType
---> 44     return cand if isinstance(cand, types.ModuleType) else importlib.import_module(cand)

File ~\AppData\Local\Programs\Python\Python310\lib\importlib\__init__.py:126, in import_module(name, package)
    124             break
    125         level += 1
--> 126 return _bootstrap._gcd_import(name[level:], package, level)

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\atari_py\__init__.py:1, in <module>
----> 1 from .ale_python_interface import *
      2 from .games import get_game_path, list_games
      4 # default to only logging errors

File ~\AppData\Local\Programs\Python\Python310\lib\site-packages\atari_py\ale_python_interface.py:17, in <module>
     14     ale_lib = cdll.LoadLibrary(os.path.join(os.path.dirname(__file__),
     15                                             'ale_interface/libale_c.so'))
     16 else:
---> 17     ale_lib = cdll.LoadLibrary(os.path.join(os.path.dirname(__file__),
     18                                             'ale_interface/ale_c.dll'))
     20 ale_lib.ALE_new.argtypes = None
     21 ale_lib.ALE_new.restype = c_void_p

File ~\AppData\Local\Programs\Python\Python310\lib\ctypes\__init__.py:452, in LibraryLoader.LoadLibrary(self, name)
    451 def LoadLibrary(self, name):
--> 452     return self._dlltype(name)

File ~\AppData\Local\Programs\Python\Python310\lib\ctypes\__init__.py:374, in CDLL.__init__(self, name, mode, handle, use_errno, use_last_error, winmode)
    371 self._FuncPtr = _FuncPtr
    373 if handle is None:
--> 374     self._handle = _dlopen(self._name, mode)
    375 else:
    376     self._handle = handle

FileNotFoundError: Could not find module 'C:\Users\shiva\AppData\Local\Programs\Python\Python310\lib\site-packages\atari_py\ale_interface\ale_c.dll' (or one of its dependencies). Try using the full path with constructor syntax.

Code:

import gym
from stable_baselines3 import A2C
from stable_baselines3.common.vec_env import VecFrameStack
from stable_baselines3.common.evaluation import evaluate_policy
from stable_baselines3.common.env_util import make_atari_env
from stable_baselines3.common.env_util import make_vec_env

import os
from gym.utils import play
from stable_baselines3.ddpg.policies import CnnPolicy
from ale_py import ALEInterface

ale = ALEInterface()
from ale_py.roms import Breakout

ale.loadROM(Breakout)
env = gym.make('Breakout-v4', render_mode='human')
env = VecFrameStack(make_atari_env("BreakoutNoFrameskip-v4"), n_stack=4)
model = A2C.load(r"C:\Users\shiva\Documents\Atari_Breakout_RL_Project\Training\Logs\BreakoutNoFrameskipv4", env=env)
mean_reward, std_reward = evaluate_policy(model, model.get_env(), n_eval_episodes=10, render=True)

I have also installed the c++ build tools from microsoft's website. i am very confused as the same thing works on my older pc. Please help.

]

System information

• [OS - Windows 11]
• [Python version - 3.10]
• [Gym version - latest]

[bishetheanswer]

Have you tried it using any other Python versions such us Python 3.7 or 3.8?

[Shivam310]

Have you tried it using any other Python versions such us Python 3.7 or 3.8?

No as the same thing works on my other computer on 3.10 itself and I don't want to use old version of python as they can cause some problems later on.

[endrift]

This is the repository for Gym Retro, not Gym ALE.