AttributeError: `np.sctypes` was removed in the NumPy 2.0 release. Access dtypes explicitly instead.

[chourroutm]

In a fresh install, numpy triggers this error:

AttributeError: np.sctypes was removed in the NumPy 2.0 release. Access dtypes explicitly instead.

This can be solved with:

pip install "numpy<2"

[chourroutm]

The error comes from nibabel:

Traceback (most recent call last):
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/bin/nitorch", line 4, in
from nitorch.cli import cli
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/init.py", line 31, in
from . import cli
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/cli/init.py", line 2, in
from . import denoising
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/cli/denoising/init.py", line 1, in
from . import denoise_mri
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/cli/denoising/denoise_mri/init.py", line 1, in
from nitorch.cli.denoising.denoise_mri.main import denoise_mri
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/cli/denoising/denoise_mri/main.py", line 5, in
from nitorch.io import (map, savef)
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/io/init.py", line 205, in
from . import volumes
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/io/volumes/init.py", line 2, in
from . import mapping
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/io/volumes/mapping.py", line 6, in
from nitorch.io.utils.indexing import (expand_index, guess_shape, compose_index, neg2pos,
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/io/utils/init.py", line 1, in
from . import indexing
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/io/utils/indexing.py", line 2, in
from ..optionals import numpy as np
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nitorch/io/optionals.py", line 12, in
import nibabel
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nibabel/init.py", line 40, in
from . import analyze as ana
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nibabel/analyze.py", line 87, in
from .volumeutils import (native_code, swapped_code, make_dt_codes,
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nibabel/volumeutils.py", line 21, in
from .casting import shared_range, OK_FLOATS
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nibabel/casting.py", line 713, in
OK_FLOATS = ok_floats()
^^^^^^^^^^^
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/nibabel/casting.py", line 707, in ok_floats
floats = np.sctypes['float'][:]
^^^^^^^^^^
File "/autofs/space/lachesis_002/users/mc1504/nitorch/.venv/lib/python3.12/site-packages/numpy/init.py", line 778, in getattr
raise AttributeError(
AttributeError: np.sctypes was removed in the NumPy 2.0 release. Access dtypes explicitly instead.

This may be fixed in new nibabel versions but we currently have a "nibabel < 4" in setup.cfg

[balbasty]

Thanks Matt. I think I should rather fix the nibabel<4 constraint. I don't remember why I pinned this, but I have an install that uses numpy 2 and nibabel 5 that works locally, so it's probably a very niche thing to fix.