Can't install MLAGENTS

Unity Engine
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1

I’ve done pretty much everything that the internet says to fix these errors after pip3 installing the mlagents package, It tells me that everything was already met (requirement wise) but Then hands me this error after running mlagents-learn --help. I used most python versions and am using 3.9.12 currently, Here’s the error:

Requirement already satisfied: mlagents in c:\users\user\anaconda3\lib\site-packages (0.28.0)
Requirement already satisfied: grpcio>=1.11.0 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (1.54.0)
Requirement already satisfied: h5py>=2.9.0 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (3.7.0)
Requirement already satisfied: mlagents-envs==0.28.0 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (0.28.0)
Requirement already satisfied: numpy<2.0,>=1.13.3 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (1.23.5)
Requirement already satisfied: Pillow>=4.2.1 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (9.4.0)
Requirement already satisfied: protobuf>=3.6 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (3.20.0)
Requirement already satisfied: pyyaml>=3.1.0 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (6.0)
Requirement already satisfied: tensorboard>=1.15 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (2.12.2)
Requirement already satisfied: attrs>=19.3.0 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (22.1.0)
Requirement already satisfied: pypiwin32==223 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (223)
Requirement already satisfied: cattrs<1.7,>=1.1.0 in c:\users\user\anaconda3\lib\site-packages (from mlagents) (1.5.0)
Requirement already satisfied: cloudpickle in c:\users\user\anaconda3\lib\site-packages (from mlagents-envs==0.28.0->mlagents) (2.0.0)
Requirement already satisfied: pywin32>=223 in c:\users\user\anaconda3\lib\site-packages (from pypiwin32==223->mlagents) (305.1)
Requirement already satisfied: absl-py>=0.4 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (1.4.0)
Requirement already satisfied: google-auth<3,>=1.6.3 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (2.17.3)
Requirement already satisfied: google-auth-oauthlib<1.1,>=0.5 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (1.0.0)
Requirement already satisfied: markdown>=2.6.8 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (3.4.1)
Requirement already satisfied: requests<3,>=2.21.0 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (2.28.1)
Requirement already satisfied: setuptools>=41.0.0 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (65.6.3)
Requirement already satisfied: tensorboard-data-server<0.8.0,>=0.7.0 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (0.7.0)
Requirement already satisfied: tensorboard-plugin-wit>=1.6.0 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (1.8.1)
Requirement already satisfied: werkzeug>=1.0.1 in c:\users\user\anaconda3\lib\site-packages (from tensorboard>=1.15->mlagents) (2.2.2)
Requirement already satisfied: wheel>=0.26 in c:\users\user\appdata\roaming\python\python310\site-packages (from tensorboard>=1.15->mlagents) (0.37.1)
Requirement already satisfied: cachetools<6.0,>=2.0.0 in c:\users\user\anaconda3\lib\site-packages (from google-auth<3,>=1.6.3->tensorboard>=1.15->mlagents) (5.3.0)
Requirement already satisfied: pyasn1-modules>=0.2.1 in c:\users\user\anaconda3\lib\site-packages (from google-auth<3,>=1.6.3->tensorboard>=1.15->mlagents) (0.2.8)
Requirement already satisfied: six>=1.9.0 in c:\users\user\appdata\roaming\python\python310\site-packages (from google-auth<3,>=1.6.3->tensorboard>=1.15->mlagents) (1.16.0)
Requirement already satisfied: rsa<5,>=3.1.4 in c:\users\user\anaconda3\lib\site-packages (from google-auth<3,>=1.6.3->tensorboard>=1.15->mlagents) (4.9)
Requirement already satisfied: requests-oauthlib>=0.7.0 in c:\users\user\anaconda3\lib\site-packages (from google-auth-oauthlib<1.1,>=0.5->tensorboard>=1.15->mlagents) (1.3.1)
Requirement already satisfied: charset-normalizer<3,>=2 in c:\users\user\anaconda3\lib\site-packages (from requests<3,>=2.21.0->tensorboard>=1.15->mlagents) (2.0.4)
Requirement already satisfied: idna<4,>=2.5 in c:\users\user\anaconda3\lib\site-packages (from requests<3,>=2.21.0->tensorboard>=1.15->mlagents) (3.4)
Requirement already satisfied: urllib3<1.27,>=1.21.1 in c:\users\user\anaconda3\lib\site-packages (from requests<3,>=2.21.0->tensorboard>=1.15->mlagents) (1.26.14)
Requirement already satisfied: certifi>=2017.4.17 in c:\users\user\anaconda3\lib\site-packages (from requests<3,>=2.21.0->tensorboard>=1.15->mlagents) (2022.12.7)
Requirement already satisfied: MarkupSafe>=2.1.1 in c:\users\user\anaconda3\lib\site-packages (from werkzeug>=1.0.1->tensorboard>=1.15->mlagents) (2.1.1)
Requirement already satisfied: pyasn1<0.5.0,>=0.4.6 in c:\users\user\anaconda3\lib\site-packages (from pyasn1-modules>=0.2.1->google-auth<3,>=1.6.3->tensorboard>=1.15->mlagents) (0.4.8)
Requirement already satisfied: oauthlib>=3.0.0 in c:\users\user\anaconda3\lib\site-packages (from requests-oauthlib>=0.7.0->google-auth-oauthlib<1.1,>=0.5->tensorboard>=1.15->mlagents) (3.2.2)
C:\Users\User>mlagents-learn --help
Traceback (most recent call last):
File “C:\Users\User\anaconda3\lib\runpy.py”, line 196, in _run_module_as_main
return run_code(code, main_globals, None,
File “C:\Users\User\anaconda3\lib\runpy.py”, line 86, in run_code
exec(code, run_globals)
File "C:\Users\User\anaconda3\Scripts\mlagents-learn.exe_main.py", line 4, in
File “C:\Users\User\anaconda3\lib\site-packages\mlagents\trainers\learn.py”, line 2, in
from mlagents import torch_utils
File "C:\Users\User\anaconda3\lib\site-packages\mlagents\torch_utils_init.py", line 1, in
from mlagents.torch_utils.torch import torch as torch # noqa
File “C:\Users\User\anaconda3\lib\site-packages\mlagents\torch_utils\torch.py”, line 6, in
from mlagents.trainers.settings import TorchSettings
File “C:\Users\User\anaconda3\lib\site-packages\mlagents\trainers\settings.py”, line 644, in
class TrainerSettings(ExportableSettings):
File “C:\Users\User\anaconda3\lib\site-packages\mlagents\trainers\settings.py”, line 667, in TrainerSettings
cattr.register_structure_hook(
File “C:\Users\User\anaconda3\lib\site-packages\cattr\converters.py”, line 207, in register_structure_hook
self._structure_func.register_cls_list([(cl, func)])
File “C:\Users\User\anaconda3\lib\site-packages\cattr\dispatch.py”, line 55, in register_cls_list
self._single_dispatch.register(cls, handler)
File “C:\Users\User\anaconda3\lib\functools.py”, line 856, in register
raise TypeError(
TypeError: Invalid first argument to register(). typing.Dict[mlagents.trainers.settings.RewardSignalType, mlagents.trainers.settings.RewardSignalSettings] is not a class.

2

Can you confirm what version of PyTorch are you using? If you have anything other than 1.7.1 I would recommend removing it and reinstalling 1.7.1 as this is the version recommended in the installation guide.
To be honest, installing ML-Agents is way more a hassle than it should be, and it’s very picky about what version of Python and PyTorch it can work with, I hope the developers fix this.

3

So the issue was because I wasn’t using the exact version of python that it needed
Thank you for the help though :frowning:

4

Which is the correct version of python? I wish there was a list somewhere that was frequently updated with the current version of each thing to install so that everything is compatible.

1 Like
5

It’s a fragile, cobbled together mess of 3rd party tools that are in constant flux. I don’t think the MLAgents authors are even able to tell you exactly what versions of everything you need at any given point in time on any given machine.

I particularly hate this Python dependency across the OS’s we work on with our Unity projects.

1 Like
6

Haha, damn it! It’s so frustrating because I’m really exciting to train some ai behaviours. I’ve watched tutorials and have a good idea how to design the training, just can’t get the stupid Python side installed properly.

7

I had the same problems:
How it worked for me was to install it from disk, with mlagents “advanced” way.

Mlagents 20
Python 3.8.16

one bug was to downgrade one package, dot remember which, after that it worked.
I also head to manually install Onix NN files, really easy too. Just follow the error events

Hope this helps you, Cheers!

8

You can use this ready-to-use conda env : GitHub - AmineAndam04/Conda-Env-Unity-ML-Agent: Ready to use Anaconda environment for Unity ML Agent toolkit.

9

sadly it doesn’t work