error when tryin to run section-properties

[rlenner]

Hi,
apologies if this question is completely rudimentary, but I have trouble running the section properties. The pip install seem to work fine, but when I try run some basic examples I get the following:

SystemError Traceback (most recent call last)
Cell In[3], line 1
----> 1 from sectionproperties.analysis import Section
2 from sectionproperties.pre import CompoundGeometry

File ~\AppData\Local\anaconda3\lib\site-packages\sectionproperties\analysis_init_.py:3
1 """sectionproperties analysis module."""
----> 3 from sectionproperties.analysis.section import Section

File ~\AppData\Local\anaconda3\lib\site-packages\sectionproperties\analysis\section.py:27
24 from shapely import Point, Polygon
25 from shapely.strtree import STRtree
---> 27 import sectionproperties.analysis.fea as fea
28 import sectionproperties.analysis.plastic_section as sp_plastic
29 import sectionproperties.analysis.solver as solver

File ~\AppData\Local\anaconda3\lib\site-packages\sectionproperties\analysis\fea.py:24
22 # numba is an optional dependency
23 try:
---> 24 from numba import njit
25 except ImportError:
27 def njit(**options: Any) -> Callable[[Any], Any]:

File ~\AppData\Local\anaconda3\lib\site-packages\numba_init_.py:42
38 from numba.core.decorators import (cfunc, generated_jit, jit, njit, stencil,
39 jit_module)
41 # Re-export vectorize decorators and the thread layer querying function
---> 42 from numba.np.ufunc import (vectorize, guvectorize, threading_layer,
43 get_num_threads, set_num_threads,
44 set_parallel_chunksize, get_parallel_chunksize,
45 get_thread_id)
47 # Re-export Numpy helpers
48 from numba.np.numpy_support import carray, farray, from_dtype

File ~\AppData\Local\anaconda3\lib\site-packages\numba\np\ufunc_init_.py:3
1 # -- coding: utf-8 --
----> 3 from numba.np.ufunc.decorators import Vectorize, GUVectorize, vectorize, guvectorize
4 from numba.np.ufunc._internal import PyUFunc_None, PyUFunc_Zero, PyUFunc_One
5 from numba.np.ufunc import _internal, array_exprs

File ~\AppData\Local\anaconda3\lib\site-packages\numba\np\ufunc\decorators.py:3
1 import inspect
----> 3 from numba.np.ufunc import _internal
4 from numba.np.ufunc.parallel import ParallelUFuncBuilder, ParallelGUFuncBuilder
6 from numba.core.registry import DelayedRegistry

SystemError: initialization of _internal failed without raising an exception

[rlenner]

**from the installation **

(base) C:\Users\roman_lenner_jr>pip install sectionproperties
Requirement already satisfied: sectionproperties in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (3.2.0)
Requirement already satisfied: shapely<3.0.0,>=2.0.3 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (2.0.3)
Requirement already satisfied: more-itertools<11.0.0,>=10.2.0 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (10.2.0)
Requirement already satisfied: rich<14.0.0,>=13.7.1 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (13.7.1)
Requirement already satisfied: matplotlib<4.0.0,>=3.8.3 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (3.8.3)
Requirement already satisfied: click<9.0.0,>=8.1.7 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (8.1.7)
Requirement already satisfied: numpy<2.0.0,>=1.26.4 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (1.26.4)
Requirement already satisfied: triangle<20230924,>=20230923 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (20230923)
Requirement already satisfied: scipy<2.0.0,>=1.12.0 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from sectionproperties) (1.12.0)
Requirement already satisfied: colorama in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from click<9.0.0,>=8.1.7->sectionproperties) (0.4.6)
Requirement already satisfied: fonttools>=4.22.0 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (4.25.0)
Requirement already satisfied: packaging>=20.0 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (22.0)
Requirement already satisfied: pillow>=8 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (9.4.0)
Requirement already satisfied: kiwisolver>=1.3.1 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (1.4.4)
Requirement already satisfied: contourpy>=1.0.1 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (1.0.5)
Requirement already satisfied: pyparsing>=2.3.1 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (3.0.9)
Requirement already satisfied: cycler>=0.10 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (0.11.0)
Requirement already satisfied: python-dateutil>=2.7 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from matplotlib<4.0.0,>=3.8.3->sectionproperties) (2.8.2)
Requirement already satisfied: markdown-it-py>=2.2.0 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from rich<14.0.0,>=13.7.1->sectionproperties) (3.0.0)
Requirement already satisfied: pygments<3.0.0,>=2.13.0 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from rich<14.0.0,>=13.7.1->sectionproperties) (2.17.2)
Requirement already satisfied: mdurl~=0.1 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from markdown-it-py>=2.2.0->rich<14.0.0,>=13.7.1->sectionproperties) (0.1.2)
Requirement already satisfied: six>=1.5 in c:\users\roman_lenner_jr\appdata\local\anaconda3\lib\site-packages (from python-dateutil>=2.7->matplotlib<4.0.0,>=3.8.3->sectionproperties) (1.16.0)

[robbievanleeuwen]

Gday @rlenner, it looks like there is an issue with your numba installation. This isn't installed by default when you pip install sectionproperties, so an incompatible version might be hanging out in your virtual environment?

I would recommend installing sectionproperties in a fresh virtual environment. It looks like you are using anaconda - I think these are the steps you need to follow to achieve this:

conda create --name sp python=3.12
conda activate sp
pip install sectionproperties

You can choose any name you'd like, I've just chosen sp, you can also chose python 3.9 through to 3.12. Make sure you activate this virtual environment every time you want to work with sectionproperties. There's a little anaconda cheatsheet here.

If you do want to use numba as well (can provide some non-trivial efficiencies with large meshes), you can replace the last line with pip install sectionproperties[numba]. However some users have had trouble running numba on windows, #347. More info on installation can be found here.

Hope this helps!

[robbievanleeuwen]

As a follow up, it looks like numba is installed by default in a new anaconda environment. You could try uninstalling with conda uninstall numba --name sp.

[rlenner]

Hi Robbie,

perfect, all solved running the in sp environment

Cheers
Roman