Could not import the C extension for the projected correlation function.

[suhani0603]

I installed corrfunc using the instructions provided in https://corrfunc.readthedocs.io/en/master/install.html

##--- this is my script to compute the correlation function
import numpy as np
import Corrfunc
from Corrfunc.theory import *
from Corrfunc.theory.xi import xi

file_halos = np.loadtxt('m_xyz.dat')

boxsize=1024
nthreads = 4
x = file_halos[:,1]
y = file_halos[:,2]
z = file_halos[:,3]

rmin = 0.1

rmax = 20.0

nbins = 20

rbins = np.logspace(np.log10(rmin), np.log10(rmax), nbins + 1)

results_xi = xi(boxsize, nthreads, rbins, x, y, z)

I am getting the following error: Could not import the C extension for the projected correlation function.

I am using Python 3.9.18
numpy 1.26.4
conda 24.3.0

Thank you in advance :)

[manodeep]

Thank you for using Corrfunc and also reporting the issue!

There are a few things that might be going wrong but will need a bit more info to check. Will you please provide the following:

• what operating system and compiler are you using
• the output of compiler —version
• The output of python —version
• the entire output from python -m pip install -e . —verbose (might want to redirect to a log file and then attach the log file)
• confirm that the python used in installing is the same python you trying to import Corrfunc into

That should (hopefully) give us some insight into what might be going wrong

[suhani0603]

Dear Mandeep, Thank you for your reply. Here are the details: - what operating system and compiler are you using: Operating system Linux Mint 20.1 and compiler is cc (conda-forge gcc 13.2.0-5) 13.2.0 - the output of compiler —version: cc (conda-forge gcc 13.2.0-5) 13.2.0 - The output of python —version : Python 3.9.18 - the entire output from python -m pip install -e . —verbose (might want to redirect to a log file and then attach the log file): I have attached here the log file. - confirm that the python used in installing is the same python you trying to import Corrfunc into Corrfunc is installed in my system. There is no issue when I import the library. I only obtain this problem with importing the C extension. I confirm that I am using the same python in which I am trying to import Corrfunc into. Regards Suhani Gupta

…

On Tue, 9 Apr 2024 at 21:13, Manodeep Sinha ***@***.***> wrote: Thank you for using Corrfunc and also reporting the issue! There are a few things that might be going wrong but will need a bit more info to check. Will you please provide the following: - what operating system and compiler are you using - the output of compiler —version - The output of python —version - the entire output from python -m pip install -e . —verbose (might want to redirect to a log file and then attach the log file) - confirm that the python used in installing is the same python you trying to import Corrfunc into That should (hopefully) give us some insight into what might be going wrong — Reply to this email directly, view it on GitHub <#316 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQLVXA3C5ZUU7KFKB5NBYKLY4Q4WTAVCNFSM6AAAAABF6J4EUCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDANBVHA4TMNBRGM> . You are receiving this because you authored the thread.Message ID: ***@***.***>

-- Doctoral student Center for Theoretical Physics Polish Academy of Sciences Al. Lotników 32/46 02-668 Warsaw Poland

[lgarrison]

@suhani0603 GitHub doesn't allow attachments over email, unfortunately. Could you attach the log file directly to a comment on this issue?

[manodeep]

@suhani0603 Did you still need help on this?

[suhani0603]

Dear Manodeep, Thank you for your email, and apologies for the late reply. I had my phd defense so I was completely focussed on preparing for that. I have not yet looked into this, I will get back to you as soon as possible. Regards Suhani Gupta

…

On Fri, 3 May 2024 at 00:52, Manodeep Sinha ***@***.***> wrote: @suhani0603 <https://github.com/suhani0603> Did you still need help on this? — Reply to this email directly, view it on GitHub <#316 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AQLVXA6DL6A5XVG6PUJYU6DZAK7RNAVCNFSM6AAAAABF6J4EUCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDAOJRHA3TINRWHE> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- Doctoral student Center for Theoretical Physics Polish Academy of Sciences Al. Lotników 32/46 02-668 Warsaw Poland

[JonLoveday]

I am also getting the error 'ImportError: Could not import the C extension' when running the tests.

macos 15.4.1

% gcc --version
Apple clang version 17.0.0 (clang-1700.0.13.3)
Target: arm64-apple-darwin24.4.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin

% python --version
Python 3.12.2

% python -m pip install corrfunc --verbose
Using pip 24.2 from /opt/anaconda3/lib/python3.12/site-packages/pip (python 3.12)
Collecting corrfunc
Using cached Corrfunc-2.5.3-cp312-cp312-macosx_15_0_arm64.whl
Requirement already satisfied: numpy>=1.20 in /opt/anaconda3/lib/python3.12/site-packages (from corrfunc) (1.26.4)
Requirement already satisfied: future in /opt/anaconda3/lib/python3.12/site-packages (from corrfunc) (1.0.0)
Requirement already satisfied: wurlitzer in /opt/anaconda3/lib/python3.12/site-packages (from corrfunc) (3.0.2)
Installing collected packages: corrfunc
Successfully installed corrfunc-2.5.3

% python -m pytest --pyargs Corrfunc
...
FAILED tests/test_theory.py::test_vpf[fastest-9] - ImportError: Could not import the C extension for the Counts-in-Cells (vpf)
========================================= 534 failed in 11.50s =========================================