No module named 'numpy.core._multiarray_umath'

[AndreaCusinato]

Problem

Description
Good morning,
I have a problem with @ScheiklP's sofa_env test code. When I try to run
python3 sofa_env/scenes/controllable_object_example/controllable_env.py

I get

Traceback (most recent call last):
  File "C:\SOFA\Lib\site-packages\numpy\core\__init__.py", line 24, in <module>
    from . import multiarray
  File "C:\SOFA\Lib\site-packages\numpy\core\multiarray.py", line 10, in <module>
    from . import overrides
  File "C:\SOFA\Lib\site-packages\numpy\core\overrides.py", line 8, in <module>
    from numpy.core._multiarray_umath import (
ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\SOFA\Lib\site-packages\numpy\__init__.py", line 144, in <module>
    from numpy.__config__ import show as show_config
  File "C:\SOFA\Lib\site-packages\numpy\__config__.py", line 4, in <module>
    from numpy.core._multiarray_umath import (
  File "C:\SOFA\Lib\site-packages\numpy\core\__init__.py", line 50, in <module>
    raise ImportError(msg)
ImportError:

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

• The Python version is: Python3.10 from "C:\Users\JetsLab.pyenv\pyenv-win\versions\3.10.11\python3.exe"
• The NumPy version is: "1.26.4"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: No module named 'numpy.core._multiarray_umath'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\sofa_env\sofa_env\scenes\controllable_object_example\controllable_env.py", line 1, in <module>
    import gymnasium.spaces as spaces
  File "C:\SOFA\Lib\site-packages\gymnasium\__init__.py", line 5, in <module>
    from gymnasium.core import (
  File "C:\SOFA\Lib\site-packages\gymnasium\core.py", line 8, in <module>
    import numpy as np
  File "C:\SOFA\Lib\site-packages\numpy\__init__.py", line 149, in <module>
    raise ImportError(msg) from e
ImportError: Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python interpreter from there.

I already checked the suggested troubleshooting, but I couldn't fix the error.
Can you help me?
Thank you!

Steps to reproduce
py -3.11 -m venv C:/SOFA
SOFA\Scripts\Activate
git clone https://github.com/ScheiklP/sofa_env.git
cd sofa_env
pip install -e .
python3 sofa_env/scenes/controllable_object_example/controllable_env.py

Expected behavior
I would have expected that no errors would appear

---

Environment

Context

• System: OS Name Microsoft Windows 11 Home
• Version of SOFA: I compiled SOFA with Cmake to be able to use with Geomagic Touch
• State: Install directory: C:\sofa

Command called

python3 sofa_env/scenes/controllable_object_example/controllable_env.py

Env vars

import sys
print(sys.path)
['', 'C:\\Users\\JetsLab\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\idlelib', 'C:\\SOFA\\Lib\\site-packages', 'C:\\Users\\JetsLab\\AppData\\Local\\Programs\\Python\\Python311\\python311.zip', 'C:\\Users\\JetsLab\\AppData\\Local\\Programs\\Python\\Python311\\Lib', 'C:\\Users\\JetsLab\\AppData\\Local\\Programs\\Python\\Python311\\DLLs', 'C:\\Users\\JetsLab\\AppData\\Local\\Programs\\Python\\Python311', 'C:\\Users\\JetsLab\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\site-packages']

---

Logs

Full output

Traceback (most recent call last):
  File "C:\SOFA\Lib\site-packages\numpy\core\__init__.py", line 24, in <module>
    from . import multiarray
  File "C:\SOFA\Lib\site-packages\numpy\core\multiarray.py", line 10, in <module>
    from . import overrides
  File "C:\SOFA\Lib\site-packages\numpy\core\overrides.py", line 8, in <module>
    from numpy.core._multiarray_umath import (
ModuleNotFoundError: No module named 'numpy.core._multiarray_umath'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\SOFA\Lib\site-packages\numpy\__init__.py", line 144, in <module>
    from numpy.__config__ import show as show_config
  File "C:\SOFA\Lib\site-packages\numpy\__config__.py", line 4, in <module>
    from numpy.core._multiarray_umath import (
  File "C:\SOFA\Lib\site-packages\numpy\core\__init__.py", line 50, in <module>
    raise ImportError(msg)
ImportError:

IMPORTANT: PLEASE READ THIS FOR ADVICE ON HOW TO SOLVE THIS ISSUE!

Importing the numpy C-extensions failed. This error can happen for
many reasons, often due to issues with your setup or how NumPy was
installed.

We have compiled some common reasons and troubleshooting tips at:

    https://numpy.org/devdocs/user/troubleshooting-importerror.html

Please note and check the following:

  * The Python version is: Python3.10 from "C:\Users\JetsLab\.pyenv\pyenv-win\versions\3.10.11\python3.exe"
  * The NumPy version is: "1.26.4"

and make sure that they are the versions you expect.
Please carefully study the documentation linked above for further help.

Original error was: No module named 'numpy.core._multiarray_umath'


The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\sofa_env\sofa_env\scenes\controllable_object_example\controllable_env.py", line 1, in <module>
    import gymnasium.spaces as spaces
  File "C:\SOFA\Lib\site-packages\gymnasium\__init__.py", line 5, in <module>
    from gymnasium.core import (
  File "C:\SOFA\Lib\site-packages\gymnasium\core.py", line 8, in <module>
    import numpy as np
  File "C:\SOFA\Lib\site-packages\numpy\__init__.py", line 149, in <module>
    raise ImportError(msg) from e
ImportError: Error importing numpy: you should not try to import numpy from
        its source directory; please exit the numpy source tree, and relaunch
        your python interpreter from there.

[hugtalbot]

Hi @AndreaCusinato

Have you installed numpy in your python environment?

[AndreaCusinato]

Don't worry! If I try to use Subsistem Linux for Windows, could It work?

[ScheiklP]

At least then it would be easier to debug.

[AndreaCusinato]

I installed WSL, pyenv and python, following the commands found here: https://github.com/ScheiklP/sofa_env?tab=readme-ov-file#sofa_env and I used the command SKIP_SOFA=1 pip install - e .
If I run the command python3 sofa_env/scenes/controllable_object_example/controllable_env.py, I get the following error:
(sofa) andrea@Andrea-PC:~/sofa_env$ python3 sofa_env/scenes/controllable_object_example/controllable_env.py

Checking SOFA_ROOT and SOFAPYTHON3_ROOT
Using environment variable SOFA_ROOT: /mnt/c/sofa/src

Traceback (most recent call last):
File "/home/andrea/sofa_env/sofa_env/scenes/controllable_object_example/controllable_env.py", line 66, in
env.reset()
File "/home/andrea/sofa_env/sofa_env/scenes/controllable_object_example/controllable_env.py", line 53, in reset
return super().reset(seed)
File "/home/andrea/sofa_env/sofa_env/base.py", line 207, in reset
self._init_sim()
File "/home/andrea/sofa_env/sofa_env/base.py", line 235, in _init_sim
self.sofa = importlib.import_module("Sofa")
File "/home/andrea/.pyenv/versions/3.10.15/lib/python3.10/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "", line 1050, in _gcd_import
File "", line 1027, in _find_and_load
File "", line 1006, in _find_and_load_unlocked
File "", line 688, in _load_unlocked
File "", line 883, in exec_module
File "", line 241, in _call_with_frames_removed
File "/mnt/c/sofa/build/lib/python3/site-packages/Sofa/init.py", line 107, in
import Sofa.Helper
ModuleNotFoundError: No module named 'Sofa.Helper'
Thank you!

[ScheiklP]

Hi,
You cannot use the binaries of SOFA that you compiled for windows within WSL.
You will have to either use the prebuilt binaries for Linux, or compile sofa within WSL.

[AndreaCusinato]

Hi,
I tried to use a virtual machine with Ubuntu 22.04 and sofa_env works.
Thank you for your support!
Best,
Andrea

[ScheiklP]

Awesome! :)