Running code_aster in the pythonic way - No module named 'code_aster'

Matt141

Hi everyone,

I'd like to run code_aster v15 inside a python script.

Using code-aster.org/UPLOAD/DOC/Formations/20-asterxx-inanutshell.pdf "Development in code_aster" and code-aster.org/forum2/viewtopic.php?id=26101 "How to use Code-Aster in the "pythonic way"?"

I try to run the simple python script called test.py:

import sys
sys.path.append('/media/my_disk/disk/opt/salome_meca/Salome-V2021-s9/tools/Code_aster_stable-1540/lib/aster/')
import code_aster

I do as follow:

1) I run profile.sh inside /media/my_disk/disk/opt/salome_meca/Salome-V2021-s9/tools/Code_aster_stable-1540/share/aster

2) ./salome_meca-lgpl-2021.0.0-2-20211014-scibian-9 -- shell -- python3 test.py

I get the following error message:

not exist: /etc/krb5.conf

WARNING: Could not find any nv files on this host!

*****************************************************

INFO : Running salome_meca in software rendering mode

*****************************************************

Traceback (most recent call last):

File "test.py", line 3, in

import code_aster

ModuleNotFoundError: No module named 'code_aster'

Error raised when executing command: python3 test.py

ERROR 1 in method _runSession.

singularity exit code: 1

Python3 path obtained with "which python" from Singularity is

/opt/python/3.6.5/bin/python

Do you have an idea why the module code_aster is not found ?

Matt141

The path was wrong

sys.path.append('/media/my_disk/disk/opt/salome_meca/Salome-V2021-s9/tools/Code_aster_stable-1540/lib/aster/')

and should be

sys.path.append('/opt/salome_meca/Salome-V2021-s9/tools/Code_aster_stable-1540/lib/aster/')

and I have to do "source profile.sh" instead of ./profile.sh.

Also, I had to comment out the folowing lines in profile.sh

#PYTHONHOME=/opt/python/3.6.5

#export PYTHONHOME

Otherwise, I get the following issue:

Fatal Python error: initfsencoding: Unable to get the locale encoding

ModuleNotFoundError: No module named 'encodings'

To sum up the commands are:

1) source profile.sh

2) ./salome_meca-lgpl-2021.0.0-2-20211014-scibian-9 -- shell -- python3 test.py

philbucher

I can confirm that sourcing profile.sh[/i] (with [i]source /opt/salome_meca/Salome-V2021-s9/tools/Code_aster_stable-1540/share/aster/profile.sh when inside the singularity container) is enough to get everything registered and working correctly. Actually I don't know how this scripts can be used from outside the container.

I didn't have to do anything else, no modifications to this file or other PYTHON_PATH modifications were necessary

I also find it easier to log in to the singularity container and then run python from there, instead of doing it in on step, i.e. instead of ./salome_meca-lgpl-2021.0.0-2-20211014-scibian-9 -- shell -- python3 test.py[/i], I do first [i]./salome_meca-lgpl-2021.0.0-2-20211014-scibian-9 -- shell and then start python like in any other shell

To sum up this is what I do:

1. ./salome_meca-lgpl-2021.0.0-2-20211014-scibian-9 -- shell (log into the container)

2. source /opt/salome_meca/Salome-V2021-s9/tools/Code_aster_stable-1540/share/aster/profile.sh (source the environment)

3. run any python-script, e.g. python3 runCA.py

nicolas_p

You can't do it outside the container because it need prerequisites that are only inside

martinr

Hi,

anyone knows how to source profile.sh or append lib/aster from code_aster install and not salome meca ? I can't find those in my aster install.