Environment cartpole-realistic doesn't exist.

[EmbeddedDesign]

I seem to be having some trouble getting this environment to run in Google Colab.

Package installation goes about as well as can be expected and ends with successful installation of cartpole_realistic-0.0.1:

!pip install tf-agents[reverb]
!pip install tf-keras

!git clone https://github.com/SC-SGS/High-Fidelity-Cartpole.git
%cd High-Fidelity-Cartpole/
!pip install -e cartpole_realistic/

Output

Collecting tf-agents[reverb]
  Downloading tf_agents-0.19.0-py3-none-any.whl.metadata (12 kB)
Requirement already satisfied: absl-py>=0.6.1 in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (1.4.0)
Requirement already satisfied: cloudpickle>=1.3 in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (2.2.1)
Requirement already satisfied: gin-config>=0.4.0 in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (0.5.0)
Collecting gym<=0.23.0,>=0.17.0 (from tf-agents[reverb])
  Downloading gym-0.23.0.tar.gz (624 kB)
     ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 624.4/624.4 kB 11.8 MB/s eta 0:00:00
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
  Preparing metadata (pyproject.toml) ... done
Requirement already satisfied: numpy>=1.19.0 in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (1.26.4)
Requirement already satisfied: pillow in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (9.4.0)
Requirement already satisfied: six>=1.10.0 in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (1.16.0)
Requirement already satisfied: protobuf>=3.11.3 in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (3.20.3)
Requirement already satisfied: wrapt>=1.11.1 in /usr/local/lib/python3.10/dist-packages (from tf-agents[reverb]) (1.16.0)
Collecting typing-extensions==4.5.0 (from tf-agents[reverb])
  Downloading typing_extensions-4.5.0-py3-none-any.whl.metadata (8.5 kB)
Collecting pygame==2.1.3 (from tf-agents[reverb])
  Downloading pygame-2.1.3-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (9.3 kB)
Collecting tensorflow-probability~=0.23.0 (from tf-agents[reverb])
  Downloading tensorflow_probability-0.23.0-py2.py3-none-any.whl.metadata (13 kB)
Collecting rlds (from tf-agents[reverb])
  Downloading rlds-0.1.8-py3-none-manylinux2010_x86_64.whl.metadata (1.7 kB)
Collecting dm-reverb~=0.14.0 (from tf-agents[reverb])
  Downloading dm_reverb-0.14.0-cp310-cp310-manylinux2014_x86_64.whl.metadata (17 kB)
Collecting tensorflow~=2.15.0 (from tf-agents[reverb])
  Downloading tensorflow-2.15.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (4.2 kB)
Requirement already satisfied: dm-tree in /usr/local/lib/python3.10/dist-packages (from dm-reverb~=0.14.0->tf-agents[reverb]) (0.1.8)
Requirement already satisfied: portpicker in /usr/local/lib/python3.10/dist-packages (from dm-reverb~=0.14.0->tf-agents[reverb]) (1.5.2)
Requirement already satisfied: gym-notices>=0.0.4 in /usr/local/lib/python3.10/dist-packages (from gym<=0.23.0,>=0.17.0->tf-agents[reverb]) (0.0.8)
Requirement already satisfied: astunparse>=1.6.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (1.6.3)
Requirement already satisfied: flatbuffers>=23.5.26 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (24.3.25)
Requirement already satisfied: gast!=0.5.0,!=0.5.1,!=0.5.2,>=0.2.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (0.6.0)
Requirement already satisfied: google-pasta>=0.1.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (0.2.0)
Requirement already satisfied: h5py>=2.9.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (3.11.0)
Requirement already satisfied: libclang>=13.0.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (18.1.1)
Collecting ml-dtypes~=0.3.1 (from tensorflow~=2.15.0->tf-agents[reverb])
  Downloading ml_dtypes-0.3.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (20 kB)
Requirement already satisfied: opt-einsum>=2.3.2 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (3.3.0)
Requirement already satisfied: packaging in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (24.1)
Requirement already satisfied: setuptools in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (71.0.4)
Requirement already satisfied: termcolor>=1.1.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (2.4.0)
Collecting wrapt>=1.11.1 (from tf-agents[reverb])
  Downloading wrapt-1.14.1-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (6.7 kB)
Requirement already satisfied: tensorflow-io-gcs-filesystem>=0.23.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (0.37.1)
Requirement already satisfied: grpcio<2.0,>=1.24.3 in /usr/local/lib/python3.10/dist-packages (from tensorflow~=2.15.0->tf-agents[reverb]) (1.64.1)
Collecting tensorboard<2.16,>=2.15 (from tensorflow~=2.15.0->tf-agents[reverb])
  Downloading tensorboard-2.15.2-py3-none-any.whl.metadata (1.7 kB)
Collecting tensorflow-estimator<2.16,>=2.15.0 (from tensorflow~=2.15.0->tf-agents[reverb])
  Downloading tensorflow_estimator-2.15.0-py2.py3-none-any.whl.metadata (1.3 kB)
Collecting keras<2.16,>=2.15.0 (from tensorflow~=2.15.0->tf-agents[reverb])
  Downloading keras-2.15.0-py3-none-any.whl.metadata (2.4 kB)
Requirement already satisfied: decorator in /usr/local/lib/python3.10/dist-packages (from tensorflow-probability~=0.23.0->tf-agents[reverb]) (4.4.2)
Requirement already satisfied: wheel<1.0,>=0.23.0 in /usr/local/lib/python3.10/dist-packages (from astunparse>=1.6.0->tensorflow~=2.15.0->tf-agents[reverb]) (0.44.0)
Requirement already satisfied: google-auth<3,>=1.6.3 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (2.27.0)
Requirement already satisfied: google-auth-oauthlib<2,>=0.5 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (1.2.1)
Requirement already satisfied: markdown>=2.6.8 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (3.7)
Requirement already satisfied: requests<3,>=2.21.0 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (2.32.3)
Requirement already satisfied: tensorboard-data-server<0.8.0,>=0.7.0 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (0.7.2)
Requirement already satisfied: werkzeug>=1.0.1 in /usr/local/lib/python3.10/dist-packages (from tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (3.0.4)
Requirement already satisfied: psutil in /usr/local/lib/python3.10/dist-packages (from portpicker->dm-reverb~=0.14.0->tf-agents[reverb]) (5.9.5)
Requirement already satisfied: cachetools<6.0,>=2.0.0 in /usr/local/lib/python3.10/dist-packages (from google-auth<3,>=1.6.3->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (5.5.0)
Requirement already satisfied: pyasn1-modules>=0.2.1 in /usr/local/lib/python3.10/dist-packages (from google-auth<3,>=1.6.3->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (0.4.0)
Requirement already satisfied: rsa<5,>=3.1.4 in /usr/local/lib/python3.10/dist-packages (from google-auth<3,>=1.6.3->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (4.9)
Requirement already satisfied: requests-oauthlib>=0.7.0 in /usr/local/lib/python3.10/dist-packages (from google-auth-oauthlib<2,>=0.5->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (1.3.1)
Requirement already satisfied: charset-normalizer<4,>=2 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (3.3.2)
Requirement already satisfied: idna<4,>=2.5 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (3.8)
Requirement already satisfied: urllib3<3,>=1.21.1 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (2.0.7)
Requirement already satisfied: certifi>=2017.4.17 in /usr/local/lib/python3.10/dist-packages (from requests<3,>=2.21.0->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (2024.8.30)
Requirement already satisfied: MarkupSafe>=2.1.1 in /usr/local/lib/python3.10/dist-packages (from werkzeug>=1.0.1->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (2.1.5)
Requirement already satisfied: pyasn1<0.7.0,>=0.4.6 in /usr/local/lib/python3.10/dist-packages (from pyasn1-modules>=0.2.1->google-auth<3,>=1.6.3->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (0.6.0)
Requirement already satisfied: oauthlib>=3.0.0 in /usr/local/lib/python3.10/dist-packages (from requests-oauthlib>=0.7.0->google-auth-oauthlib<2,>=0.5->tensorboard<2.16,>=2.15->tensorflow~=2.15.0->tf-agents[reverb]) (3.2.2)
Downloading pygame-2.1.3-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (13.7 MB)
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Downloading typing_extensions-4.5.0-py3-none-any.whl (27 kB)
Downloading dm_reverb-0.14.0-cp310-cp310-manylinux2014_x86_64.whl (6.4 MB)
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Downloading tensorflow-2.15.1-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (475.2 MB)
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Downloading tensorflow_probability-0.23.0-py2.py3-none-any.whl (6.9 MB)
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Downloading wrapt-1.14.1-cp310-cp310-manylinux_2_5_x86_64.manylinux1_x86_64.manylinux_2_17_x86_64.manylinux2014_x86_64.whl (77 kB)
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Downloading rlds-0.1.8-py3-none-manylinux2010_x86_64.whl (48 kB)
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Downloading tf_agents-0.19.0-py3-none-any.whl (1.4 MB)
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Downloading keras-2.15.0-py3-none-any.whl (1.7 MB)
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Downloading ml_dtypes-0.3.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (2.2 MB)
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Downloading tensorboard-2.15.2-py3-none-any.whl (5.5 MB)
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Downloading tensorflow_estimator-2.15.0-py2.py3-none-any.whl (441 kB)
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Building wheels for collected packages: gym
  Building wheel for gym (pyproject.toml) ... done
  Created wheel for gym: filename=gym-0.23.0-py3-none-any.whl size=697632 sha256=9513bc57fa8b4999a763c9b22d4b14a72fd735111e2e32c0eb4d6433d08a65b2
  Stored in directory: /root/.cache/pip/wheels/3d/6f/b4/3991d4fae11d0ecb0754c11cc1b4e7745012850da4efaaf0b1
Successfully built gym
Installing collected packages: wrapt, typing-extensions, tensorflow-probability, tensorflow-estimator, rlds, pygame, ml-dtypes, keras, gym, tf-agents, dm-reverb, tensorboard, tensorflow
  Attempting uninstall: wrapt
    Found existing installation: wrapt 1.16.0
    Uninstalling wrapt-1.16.0:
      Successfully uninstalled wrapt-1.16.0
  Attempting uninstall: typing-extensions
    Found existing installation: typing_extensions 4.12.2
    Uninstalling typing_extensions-4.12.2:
      Successfully uninstalled typing_extensions-4.12.2
  Attempting uninstall: tensorflow-probability
    Found existing installation: tensorflow-probability 0.24.0
    Uninstalling tensorflow-probability-0.24.0:
      Successfully uninstalled tensorflow-probability-0.24.0
  Attempting uninstall: pygame
    Found existing installation: pygame 2.6.0
    Uninstalling pygame-2.6.0:
      Successfully uninstalled pygame-2.6.0
  Attempting uninstall: ml-dtypes
    Found existing installation: ml-dtypes 0.4.0
    Uninstalling ml-dtypes-0.4.0:
      Successfully uninstalled ml-dtypes-0.4.0
  Attempting uninstall: keras
    Found existing installation: keras 3.4.1
    Uninstalling keras-3.4.1:
      Successfully uninstalled keras-3.4.1
  Attempting uninstall: gym
    Found existing installation: gym 0.25.2
    Uninstalling gym-0.25.2:
      Successfully uninstalled gym-0.25.2
  Attempting uninstall: tensorboard
    Found existing installation: tensorboard 2.17.0
    Uninstalling tensorboard-2.17.0:
      Successfully uninstalled tensorboard-2.17.0
  Attempting uninstall: tensorflow
    Found existing installation: tensorflow 2.17.0
    Uninstalling tensorflow-2.17.0:
      Successfully uninstalled tensorflow-2.17.0
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
sqlalchemy 2.0.32 requires typing-extensions>=4.6.0, but you have typing-extensions 4.5.0 which is incompatible.
albumentations 1.4.14 requires typing-extensions>=4.9.0, but you have typing-extensions 4.5.0 which is incompatible.
pydantic 2.8.2 requires typing-extensions>=4.6.1; python_version < "3.13", but you have typing-extensions 4.5.0 which is incompatible.
pydantic-core 2.20.1 requires typing-extensions!=4.7.0,>=4.6.0, but you have typing-extensions 4.5.0 which is incompatible.
tf-keras 2.17.0 requires tensorflow<2.18,>=2.17, but you have tensorflow 2.15.1 which is incompatible.
torch 2.4.0+cu121 requires typing-extensions>=4.8.0, but you have typing-extensions 4.5.0 which is incompatible.
typeguard 4.3.0 requires typing-extensions>=4.10.0, but you have typing-extensions 4.5.0 which is incompatible.
Successfully installed dm-reverb-0.14.0 gym-0.23.0 keras-2.15.0 ml-dtypes-0.3.2 pygame-2.1.3 rlds-0.1.8 tensorboard-2.15.2 tensorflow-2.15.1 tensorflow-estimator-2.15.0 tensorflow-probability-0.23.0 tf-agents-0.19.0 typing-extensions-4.5.0 wrapt-1.14.1
Requirement already satisfied: tf-keras in /usr/local/lib/python3.10/dist-packages (2.17.0)
Collecting tensorflow<2.18,>=2.17 (from tf-keras)
  Using cached tensorflow-2.17.0-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl.metadata (4.2 kB)
Requirement already satisfied: absl-py>=1.0.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (1.4.0)
Requirement already satisfied: astunparse>=1.6.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (1.6.3)
Requirement already satisfied: flatbuffers>=24.3.25 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (24.3.25)
Requirement already satisfied: gast!=0.5.0,!=0.5.1,!=0.5.2,>=0.2.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (0.6.0)
Requirement already satisfied: google-pasta>=0.1.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (0.2.0)
Requirement already satisfied: h5py>=3.10.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (3.11.0)
Requirement already satisfied: libclang>=13.0.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (18.1.1)
Requirement already satisfied: ml-dtypes<0.5.0,>=0.3.1 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (0.3.2)
Requirement already satisfied: opt-einsum>=2.3.2 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (3.3.0)
Requirement already satisfied: packaging in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (24.1)
Requirement already satisfied: protobuf!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5,<5.0.0dev,>=3.20.3 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (3.20.3)
Requirement already satisfied: requests<3,>=2.21.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (2.32.3)
Requirement already satisfied: setuptools in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (71.0.4)
Requirement already satisfied: six>=1.12.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (1.16.0)
Requirement already satisfied: termcolor>=1.1.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (2.4.0)
Requirement already satisfied: typing-extensions>=3.6.6 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (4.5.0)
Requirement already satisfied: wrapt>=1.11.0 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (1.14.1)
Requirement already satisfied: grpcio<2.0,>=1.24.3 in /usr/local/lib/python3.10/dist-packages (from tensorflow<2.18,>=2.17->tf-keras) (1.64.1)
Collecting tensorboard<2.18,>=2.17 (from tensorflow<2.18,>=2.17->tf-keras)
  Downloading tensorboard-2.17.1-py3-none-any.whl.metadata (1.6 kB)
Collecting keras>=3.2.0 (from tensorflow<2.18,>=2.17->tf-keras)
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Cloning into 'High-Fidelity-Cartpole'...
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/content/High-Fidelity-Cartpole
Obtaining file:///content/High-Fidelity-Cartpole/cartpole_realistic
  Preparing metadata (setup.py) ... done
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  Running setup.py develop for cartpole_realistic
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Import and load environment:

!ls # Where are we and what can we see?

import os
# Keep using keras-2 (tf-keras) rather than keras-3 (keras).
os.environ['TF_USE_LEGACY_KERAS'] = '1'

import cartpole_realistic
import tf_agents

env = tf_agents.environments.suite_gym.load('cartpole-realistic')

Result:

cartpole_realistic  env_config.gin  LICENSE  README.md

---------------------------------------------------------------------------

NameNotFound                              Traceback (most recent call last)

[<ipython-input-3-3cd3825104b3>](https://localhost:8080/#) in <cell line: 10>()
      8 import tf_agents
      9 
---> 10 env = tf_agents.environments.suite_gym.load('cartpole-realistic')

8 frames

[/usr/local/lib/python3.10/dist-packages/gin/config.py](https://localhost:8080/#) in gin_wrapper(*args, **kwargs)
   1603       scope_info = " in scope '{}'".format(scope_str) if scope_str else ''
   1604       err_str = err_str.format(name, fn_or_cls, scope_info)
-> 1605       utils.augment_exception_message_and_reraise(e, err_str)
   1606 
   1607   return gin_wrapper

[/usr/local/lib/python3.10/dist-packages/gin/utils.py](https://localhost:8080/#) in augment_exception_message_and_reraise(exception, message)
     39   proxy = ExceptionProxy()
     40   ExceptionProxy.__qualname__ = type(exception).__qualname__
---> 41   raise proxy.with_traceback(exception.__traceback__) from None
     42 
     43 

[/usr/local/lib/python3.10/dist-packages/gin/config.py](https://localhost:8080/#) in gin_wrapper(*args, **kwargs)
   1580 
   1581     try:
-> 1582       return fn(*new_args, **new_kwargs)
   1583     except Exception as e:  # pylint: disable=broad-except
   1584       err_str = ''

[/usr/local/lib/python3.10/dist-packages/tf_agents/environments/suite_gym.py](https://localhost:8080/#) in load(environment_name, discount, max_episode_steps, gym_env_wrappers, env_wrappers, spec_dtype_map, gym_kwargs, render_kwargs)
     81   """
     82   gym_kwargs = gym_kwargs if gym_kwargs else {}
---> 83   gym_spec = gym.spec(environment_name)
     84   gym_env = gym_spec.make(**gym_kwargs)
     85 

[/usr/local/lib/python3.10/dist-packages/gym/envs/registration.py](https://localhost:8080/#) in spec(id)
    678 
    679 def spec(id: str) -> EnvSpec:
--> 680     return registry.spec(id)
    681 
    682 

[/usr/local/lib/python3.10/dist-packages/gym/envs/registration.py](https://localhost:8080/#) in spec(self, path)
    538         # We can go ahead and return the env_spec.
    539         # The EnvSpecTree will take care of any exceptions.
--> 540         return self.env_specs[id]
    541 
    542     def register(self, id: str, **kwargs) -> None:

[/usr/local/lib/python3.10/dist-packages/gym/envs/registration.py](https://localhost:8080/#) in __getitem__(self, key)
    374         # appropriate environment ID.
    375         namespace, name, version = parse_env_id(key)
--> 376         self._assert_version_exists(namespace, name, version)
    377 
    378         return self.tree[namespace][name][version]

[/usr/local/lib/python3.10/dist-packages/gym/envs/registration.py](https://localhost:8080/#) in _assert_version_exists(self, namespace, name, version)
    300         self, namespace: Optional[str], name: str, version: Optional[int]
    301     ):
--> 302         self._assert_name_exists(namespace, name)
    303         if version in self.tree[namespace][name]:
    304             return

[/usr/local/lib/python3.10/dist-packages/gym/envs/registration.py](https://localhost:8080/#) in _assert_name_exists(self, namespace, name)
    295                 message += f" Did you mean: `{suggestions[0]}`?"
    296         # Throw the error
--> 297         raise error.NameNotFound(message)
    298 
    299     def _assert_version_exists(

NameNotFound: Environment `cartpole-realistic` doesn't exist.
  In call to configurable 'load' (<function load at 0x7a64cb58e7a0>)

It might be helpful to know which versions of gym, gin, tf-agents [reverb/non-reverb], and tf-keras were used to build this environment, though I have tried multiple versions of all and the results are essentially the same.