Molecule: Molecule failure molecule_core.py No module named 'molecule'

[ssbarnea]

I seen this happening when molecule was installed using pip install --user molecule on a specific machine but I was not able to reproduce it myself.

I will need more feedback in order to investigate it.

[S7R4nG3]

I'm encountering the same error myself on my Mac. I used pip3 to install with the --user flag.

Are there any logs I can provide to help?

[ssbarnea]

Apparently in the last days I got lots of weird problems when installing packages as --user. I ended up using a real virtualenv and removing any packages from .local.

I hope this helps. I am almost sure the issue is not relaed to molecule.

[S7R4nG3]

Weird....you're right, had the same result..

Created a new venv, installed molecule, working fine now...

[spaceraccoon537]

Is experiencing the same problem. What should I do?

[spaceraccoon537]

Created a new venv, installed molecule, working fine now...

@S7R4nG3, can you explain more?

[S7R4nG3]

Not really...I was attempting to install molecule locally on my Mac, instead I went into my ansible role directory, created a new venv (python3 -m venv .) allow it to setup totally then use ./bin/pip3 install molecule and it install and ran fine....
Be sure that you also install the driver as well for however you want molecule to run (docker etc) ./bin/pip3 install molecule[docker]

[ssbarnea]

I am closing it as we failed to find a way to reproduce it. Still if someone finds one, we should reopen.

[dbuteau]

Just for information found why to this error in my case.
My ansible was configured to use python3 by default (cause of python 2 end of life)

ansible --version
ansible 2.9.5
  [...]
  python version = 3.7.5 (default, Apr 19 2020, 20:18:17) [GCC 9.2.1 20191008]

so pip install molecule is not enough in this case.
Have to python3 -m pip install molecule to fix the error message

[Xtravaganz]

My solution was to uninstall ansible, after that install molecule over pip3, it will install ansible too.

pip uninstall ansible
pip3 uninstall molecule
pip3 install molecule

And error is history.