Numpy 2.0.0 breaks pymoo 0.6.1.1

[jbuerman]

Installing pymoo from PyPI, i.e. 0.6.1.1, results in an AttributeError when importing ElementwiseProblem. The problem seems to be numpy version 2.0.0. Downgrading numpy to 1.26.4 resolves the issue.

MWE

1. Create venv (python3 -m venv venv)
2. Activate venv
3. Install pymoo (python3 -m pip install pymoo)
4. Run python
5. import ElementwiseProblem (from pymoo.core.problem import ElementwiseProblem)

Error Message

Traceback (most recent call last): File "", line 1, in File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/pymoo/core/problem.py", line 5, in import pymoo.gradient.toolbox as anp File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/pymoo/gradient/toolbox/init.py", line 6, in sys.modules[name] = importlib.import_module(TOOLBOX) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/usr/lib/python3.11/importlib/init.py", line 126, in import_module return _bootstrap._gcd_import(name[level:], package, level) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/autograd/init.py", line 2, in from .differential_operators import ( File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/autograd/differential_operators.py", line 16, in import autograd.numpy as np File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/autograd/numpy/init.py", line 5, in from . import numpy_vjps File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/autograd/numpy/numpy_vjps.py", line 563, in defvjp(anp.msort, grad_sort) # Until multi-D is allowed, these are the same. ^^^^^^^^^ File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/autograd/tracer.py", line 48, in f_wrapped return f_raw(*args, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^ File "/home/XXX/pymoo_msort/venv/lib/python3.11/site-packages/numpy/init.py", line 410, in getattr raise AttributeError("module {!r} has no attribute " AttributeError: module 'numpy' has no attribute 'msort'. Did you mean: 'sort'?

Additional Info

Tested with python version 3.11.6

Packages in venv

about-time 4.2.1 alive-progress 3.1.5 autograd 1.6.2 cma 3.2.2 contourpy 1.2.1 cycler 0.12.1 Deprecated 1.2.14 dill 0.3.8 fonttools 4.53.0 future 1.0.0 grapheme 0.6.0 kiwisolver 1.4.5 matplotlib 3.9.0 numpy 2.0.0 packaging 24.1 pillow 10.3.0 pip 23.2 pymoo 0.6.1.1 pyparsing 3.1.2 python-dateutil 2.9.0.post0 scipy 1.13.1 setuptools 68.1.2 six 1.16.0 wrapt 1.16.0