ImportError: cannot import name '_core' from partially initialized module 'pychrono' (most likely due to a circular import)
e-chesoni opened this issue · 0 comments
Issue
I recently installed Pychrono on Windows, following the instructions for option A) here. I was able to install everything as directed, but when I try to run the demo file demo_CH_coords.py from spyder and vscode I get the following error:
PS C:\Users\USERNAME\anaconda3\envs\chrono\Lib\site-packages\pychrono\demos> conda activate chrono
conda : The term 'conda' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if
a path was included, verify that the path is correct and try again.
At line:1 char:1
+ conda activate chrono
+
+ CategoryInfo : ObjectNotFound: (conda:String) [], CommandNotFoundException
+ FullyQualifiedErrorId : CommandNotFoundException
PS C:\Users\USERNAME\anaconda3\envs\chrono\Lib\site-packages\pychrono\demos> & C:/Users/USERNAME/anaconda3/envs/chrono/python.exe c:/Users/TLab_PC_00/anaconda3/envs/chrono/Lib/site-packages/pychrono/demos/core/demo_CH_coords.py
First tutorial for PyChrono: vectors, matrices etc.
Traceback (most recent call last):
File "c:\Users\USERNAME\anaconda3\envs\chrono\Lib\site-packages\pychrono\demos\core\demo_CH_coords.py", line 17, in <module>
import pychrono as chrono
File "C:\Users\USERNAME\anaconda3\envs\chrono\lib\site-packages\pychrono\__init__.py", line 54, in <module>
from .core import *
File "C:\Users\USERNAME\anaconda3\envs\chrono\lib\site-packages\pychrono\core.py", line 13, in <module>
from . import _core
ImportError: cannot import name '_core' from partially initialized module 'pychrono' (most likely due to a circular import) (C:\Users\USERNAME\anaconda3\envs\chrono\lib\site-packages\pychrono\__init__.py)
I have read that this is a circular import issue online (and in the error obviously) but I have no idea where it is coming from, or how to fix it, seeing as this is all part of the installation process and I have not written any code yet myself.
What I've Tried
I did try creating a simple test file called test.py with only the import statement in it:
import pychrono as chrono
I get the same error when trying to run this file from the chrono venv in vscode.
Following the debug process in post #140 I tried installing Spyder in the chrono venv
conda install spyder
Opening it via the anaconda navigation terminal, and running demo_CH_coords.py. I get the same error
...
ImportError: cannot import name '_core' from partially initialized module 'pychrono' (most likely due to a circular import) (C:\Users\USERNAME\anaconda3\envs\chrono\lib\site-packages\pychrono\__init__.py)
I have also tried adding ...\anaconda3 and ...\anaconda3\Scripts paths to environment variables as suggested by RichiGit97 on post #423:
I get the same result running from spyder:
...
ImportError: cannot import name '_core' from partially initialized module 'pychrono' (most likely due to a circular import) (C:\Users\USERNAME\anaconda3\envs\chrono\lib\site-packages\pychrono\__init__.py)
Additional Information
For reference, I installed this version of pychrono: win-64_pychrono-8.0.0-py310_3631.tar.bz2 using this line from the instructions:
conda install win-64_pychrono-8.0.0-py310_3631.tar.bz2
And I have the following packages installed in the virtual environment chrono: (all installed during the installation process referenced above)
Name Version Build Channel
bzip2 1.0.8 vc14h5832a3a_5 [vc14] intel
ca-certificates 2023.7.22 h56e8100_0 conda-forge
cuda-cccl 11.7.58 0 nvidia/label/cuda-11.7.0
cuda-command-line-tools 11.7.0 0 nvidia/label/cuda-11.7.0
cuda-compiler 11.7.0 0 nvidia/label/cuda-11.7.0
cuda-cudart 11.7.60 0 nvidia/label/cuda-11.7.0
cuda-cudart-dev 11.7.60 0 nvidia/label/cuda-11.7.0
cuda-cuobjdump 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-cupti 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-cuxxfilt 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-documentation 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-libraries 11.7.0 0 nvidia/label/cuda-11.7.0
cuda-libraries-dev 11.7.0 0 nvidia/label/cuda-11.7.0
cuda-memcheck 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nsight-compute 11.7.0 0 nvidia/label/cuda-11.7.0
cuda-nvcc 11.7.64 0 nvidia/label/cuda-11.7.0
cuda-nvdisasm 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nvml-dev 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nvprof 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nvprune 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nvrtc 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nvrtc-dev 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nvtx 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-nvvp 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-sanitizer-api 11.7.50 0 nvidia/label/cuda-11.7.0
cuda-toolkit 11.7.0 0 nvidia/label/cuda-11.7.0
cuda-tools 11.7.0 0 nvidia/label/cuda-11.7.0
cuda-visual-tools 11.7.0 0 nvidia/label/cuda-11.7.0
expat 2.5.0 h63175ca_1 conda-forge
fontconfig 2.14.2 hbde0cde_0 conda-forge
freetype 2.12.1 hdaf720e_2 conda-forge
glfw 3.3.8 hcfcfb64_2 conda-forge
intel-openmp 2023.2.0 h57928b3_50497 conda-forge
intelpython 2023.2.0 0 intel
irrlicht 1.8.5 h65f4d7e_4 conda-forge
libblas 3.9.0 8_mkl conda-forge
libcblas 3.9.0 8_mkl conda-forge
libcublas 11.10.1.25 0 nvidia/label/cuda-11.7.0
libcublas-dev 11.10.1.25 0 nvidia/label/cuda-11.7.0
libcufft 10.7.2.50 0 nvidia/label/cuda-11.7.0
libcufft-dev 10.7.2.50 0 nvidia/label/cuda-11.7.0
libcurand 10.2.10.50 0 nvidia/label/cuda-11.7.0
libcurand-dev 10.2.10.50 0 nvidia/label/cuda-11.7.0
libcusolver 11.3.5.50 0 nvidia/label/cuda-11.7.0
libcusolver-dev 11.3.5.50 0 nvidia/label/cuda-11.7.0
libcusparse 11.7.3.50 0 nvidia/label/cuda-11.7.0
libcusparse-dev 11.7.3.50 0 nvidia/label/cuda-11.7.0
libexpat 2.5.0 h63175ca_1 conda-forge
libffi 3.4.2 h8ffe710_5 intel
libiconv 1.17 h8ffe710_0 conda-forge
libjpeg-turbo 3.0.0 hcfcfb64_1 conda-forge
liblapack 3.9.0 8_mkl conda-forge
libnpp 11.7.3.21 0 nvidia/label/cuda-11.7.0
libnpp-dev 11.7.3.21 0 nvidia/label/cuda-11.7.0
libnvjpeg 11.7.2.34 0 nvidia/label/cuda-11.7.0
libnvjpeg-dev 11.7.2.34 0 nvidia/label/cuda-11.7.0
libpng 1.6.39 h19919ed_0 conda-forge
libsqlite 3.42.0 hcfcfb64_0 intel
libzlib 1.2.13 hcfcfb64_5 intel
mkl 2020.4 hb70f87d_311 conda-forge
nsight-compute 2022.2.0.13 0 nvidia/label/cuda-11.7.0
numpy 1.24.0 py39hbccbffa_0 conda-forge
occt 7.4.0 h823b557_3 conda-forge
openssl 3.1.4 hcfcfb64_0 conda-forge
pip 23.1.2 pyhd8ed1ab_0 intel
python 3.9.16 h11da44f_23 intel
python_abi 3.9 2_cp39 conda-forge
pythonocc-core 7.4.1 py39h3d1c7c5_0 conda-forge
sdl 1.2.68 h21dd15a_0 conda-forge
sdl2 2.28.4 h63175ca_0 conda-forge
setuptools 67.7.2 pyhd8ed1ab_0 intel
six 1.16.0 pyh6c4a22f_0 conda-forge
tbb 2020.3 vc14_intel_311 [vc14] intel
tk 8.6.12 h2bbff1b_0 intel
tzdata 2023c h71feb2d_0 intel
ucrt 10.0.22621.0 h57928b3_0 intel
vc 14.3 hb25d44b_16 intel
vc14_runtime 14.34.31931 h5081d32_16 intel
vs2015_runtime 14.34.31931 hed1258a_16 intel
wheel 0.40.0 pyhd8ed1ab_0 intel
xz 5.2.8 h8cc25b3_0 intel`
Plea
Please let me know if I can offer any more information to help get this issue resolved. Would really love to get Pychrono working :)