Version problems of scipy package in pycce

[XuliangDu]

Hello! I really appreciate your CCE tool in Python. It would be extremely helpful for my study of spin qubit dynamics. This is my first time raising an issue on GitHub, so please excuse me if anything is unclear or improperly formatted.

When attempting to use pycce, I encountered an import error related to isintlike from scipy.sparse.sputils.

Steps to Reproduce the error:
Environment:
Colab
Python 3.11.12
SciPy 1.15.2

Error Trigger:
/usr/local/lib/python3.11/dist-packages/pycce/bath/map.py in
-->6 from scipy.sparse.sputils import isintlike

Error Message:
ImportError: cannot import name 'isintlike' from 'scipy.sparse.sputils' (/usr/local/lib/python3.11/dist-packages/scipy/sparse/sputils.py)

Attempted Solutions:
Downgraded Scipy, but encountered dependency conflicts requiring downgrades of other packages.

Could you provide a tested version combination of Python, SciPy, NumPy, ase, pandas, numba, and pycce that resolves this import conflict? Any guidance would be greatly appreciated!

[HalOwens]

I managed to work around this by using the version numbers listed on the installation page of the package. The main thing that seems to have been important was getting python 3.9 so that scipy 1.10 is installable.

[oscarlindbul]

This issue seems to be caused by scipy making the "sputils" module private (renamed to "_sputils").

Change the import statement in bath/map.py from "from scipy.sparse.sputils import isintlike" to "from scipy.sparse._sputils import isintlike". If you're installing from source, this would be a workaround to be compatible with later versions of scipy.