.to_list() enriched method doesn't work

[hawkoli1987]

Dear All,

I'm studying ANSYS pyMAPDL, following the tutorial https://www.youtube.com/watch?v=szHmg-xW_hM&t=1s

It was understood from both the tutorial code itself and pyMAPDL documentation that prnsol returns a str object, but it has the enriched method to_list() which allows the output to be exported to list format. https://mapdldocs.pyansys.com/user_guide/post.html

However, when I run the following line from the sample code, it just reports attribute error

mapdl_s_1_list = mapdl.prnsol('S', 'PRIN',).to_list()

AttributeError: 'str' object has no attribute 'to_list'

If I print out the prnsol() result, it contains both the header and table, I have to do some manual text-processing in order to extra the table information for further processing.

Would like to know if there is a quick fix to make the enriched method work? Thanks!

hawkoli1987

[germa89]

Hi @hawkoli1987

I have run:

>>> from ansys.mapdl.core import launch_mapdl
>>> from ansys.mapdl.core.examples import vmfiles
>>> mapdl = launch_mapdl()

>>> mapdl.input(vmfiles['vm271'])

>>> mapdl.post1()
>>> mapdl.set('last')
>>> mapdl.prnsol('temp').to_list()
[[1.0, 700.0]]

and it works.

Which version of PyMAPDL are you running?? I guess the best will be for you to create an issue and fill all the text boxes in the issue.

[hawkoli1987]

Hi @germa89,

Thanks for your reply. I've tried running the same code, but it results in the same error as I had before.

I'm using MAPDL version 22.2, and ansys.mapdl version 0.60.6

Attached here is the screenshot I've had.

Thanks!

[mikerife]

Hi @hawkoli1987 can you update PyMAPDL to the latest (0.63.1) and try that example model again. Mike

[germa89]

The to_list feature was introduced in v0.60.7. As @mikerife mentioned, please update your PyMAPDL using:

python -m pip install -U ansys-mapdl-core

[hawkoli1987]

Dear germa89,

I have tried to update the pymadpl package using the pip commands as you've suggested, however, it simply says 'requirement already satisficed' all the time.

I have tried to install directly from its github location, and it generates the following error. May I know what it means?

Thanks!
hawkoli1987

[akaszynski]

Looks like there's something weird with your environment. Since you're using anaconda, please go ahead and try making a new conda env with:

conda create -n pyansys_env python=3.9

Then activate it and install ansys-mapdl-core with:

conda activate pyansys_env
pip install ansys-mapdl-core

That should take care of any of your installation issues.

I'm a bit surprised that attempting an upgrade didn't work, would you mind sharing a screenshot (or code copy) after running:

python -m pip install ansys-mapdl-core --upgrade

[hawkoli1987]

Dear akaszynski,

I've created a new environment and installed ansys-mapdl-core as instructed, now I have the latest version 0.63.1. Thanks so much!

I've also tried to upgrade the old environment using the commands you've provided, the terminal outputs that 'requirements already satisfied'. When I check the version afterwards, it remained the older version 0.60.6. The snapshot is shown below.

[akaszynski]

That's strange. I can only assume there's some issue with package resolution when working within the anaconda distribution. At least creating a fresh environment works.

Thanks for posting the solution!

[germa89]

Hi hawkoli1987 You are installing from the git source, I would either: * Upgrade the package using ``pip install -U ansys-mapdl-core`` * Create a new environment and install PyMAPDL using ``pip install ansys-mapdl-core``. Kind regards,