[SasView Users] Cannot find 'sas' module in sasmodels package

[Ian Billinge via users]

Hello everyone,

I am trying to run the scripting tutorial
<https://www.sasview.org/docs/user/qtgui/Perspectives/Fitting/scripting.html>,
and I am unable to run the code because I can't import the 'sas' package.

When I run the import statements at the top of the tutorial, i.e.

import sys
> from bumps.names import *
> from sasmodels.core import load_model
> from sasmodels.bumps_model import Model, Experiment
> from sasmodels.data import load_data, set_beam_stop, set_top


I get

> ---------------------------------------------------------------------------
> ModuleNotFoundError                       Traceback (most recent call last)
> Cell In[9], line 4
>       2 from bumps.names import *
>       3 from sasmodels.core import load_model
> ----> 4 from sasmodels.bumps_model import Model, Experiment
>       5 from sasmodels.data import load_data, set_beam_stop, set_top
>
> File
> ~/micromamba/envs/smi_py311/lib/python3.11/site-packages/sasmodels/bumps_model.py:20
>      16 __all__ = ["Model", "Experiment", "BumpsParameter"]
>      18 import numpy as np  # type: ignore
> ---> 20 from .data import plot_theory
>      21 from .direct_model import DataMixin
>      23 # pylint: disable=unused-import
>
> File
> ~/micromamba/envs/smi_py311/lib/python3.11/site-packages/sasmodels/data.py:39
>      37 import numpy as np  # type: ignore
>      38 from numpy import sqrt, sin, cos, pi
> ---> 39 import sas
>      40 # pylint: disable=unused-import
>      41 try:
>
> ModuleNotFoundError: No module named 'sas'


I apparently have sasmodels installed, since I can successfully import
load_model
from sasmodels.core. However, it seems I am missing the sas package. I have
searched online and wasn't able to find any such package. I ran a simple pip
install sas, and indeed, something downloaded, but it didn't resolve the
issue.

Any insights on the issue would be most appreciated.

Best,

Ian Billinge
-- 
Ian Billinge
*he/him/his*
Ph.D Student, Yip Lab
Dept. of Earth & Environmental Engineering
Fu Foundation School of Engineering
Columbia University in the City of New York
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