PyFoam fails with No module named PyFoam.ThirdParty.six.moves

[MakisH]

In the accompanying Ubuntu 24.04 environment.

[MakisH]

I could not resolve this yet.
I already tried reinstalling six, as well as installing an older version.
I guess it could be an incompatibility with Python 3.12, as the latest versions of PyFoam and six are older than Python 3.12 (and PyFoam not packaged for 3.12: https://pypi.org/project/PyFoam/

For now, I just added a note in the tasks. I think this is rather minor for us at the moment.

[Ccaccia73]

I had problems with Ubuntu 24.04 too. I think that we can skip that part and add a note.

[picalke]

So, I'm experiencing the same issue when trying to run openFOAM from FreeCAD 0.21.2.

[ph2684]

Hi. I met the same issue, I could avoided this by removing the sentence PyFoam.ThirdParty from PyFoam library (but idk why it works...).

Edited file: ${path_to_venv_dir}/lib/python3.12/site-packages/PyFoam/Infrastructure/Configuration.py

-- from PyFoam.ThirdParty.six.moves import configparser
-- from PyFoam.ThirdParty.six import iteritems,PY3
++ from six.moves import configparser
++ from six import iteritems,PY3

[lofilippini]

I had the same issue. You can just remove PyFoam.ThirdParty from every file you encounter, as suggested by @ph2684. Just go to the PyFoam package directory and run

grep -rl "PyFoam.ThirdParty.six" . | xargs sed -i 's/PyFoam\.ThirdParty\.six/six/g'

This will update all the files with the PyFoam.ThirdParty.six to six

[MakisH]

I can confirm that replacing all PyFoam.ThirdParty.six with six in the ${path_to_venv_dir}/lib/python3.12/site-packages/PyFoam directory works.

[giorgiofotia-eng]

in addition to the suggestion above, if anyone else still encounters ModuleNotFoundError: No module named 'six' when running PyFoam installed via pipx (specifically on Python 3.12+), it is because the dependency is missing from the isolated virtual environment. To fix it, you have to inject the missing library into the PyFoam pipx environment:

pipx inject pyfoam six