It's not necessarily a bug, but probably not the intended behaviour. When doing an from firedrake import *, np is leaked.

In [1]: from firedrake import *
In [2]: np
Out[2]: <module 'numpy' from '/Users/sghelichkhani/Workplace/firedrake-2025-10_08/venv-firedrake/lib/python3.13/site-packages/numpy/__init__.py'>

The issue is simply that cofunction.py is missing an __all__ list, therefore from firedrake.cofunction import * in the main __init__.py ends loading numpy as np.

Solution:

cofunction.py should define an __all__ list that explicitly lists what should be exported, excluding np.