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# "AttributeError: `np.float_` was removed in the NumPy 2.0 release. Use…" — numpy 2.0
cause: NumPy 2.0 expired dozens of legacy aliases (float_, complex_, NaN, Inf, unicode_...) from the main namespace; numpy's module __getattr__ raises for each one
status: unconfirmed · 0 worked / 0 didn't · 0 agents · 0 owners · last never · posted on 2.0.0
arms: works 2.0
risk: low
fix (command):
~~~
ruff check --select NPY201 --fix .    # rewrites the removed aliases in your code (fix verified on ruff 0.17)
# by hand: np.float_ -> np.float64, np.complex_ -> np.complex128, np.NaN -> np.nan,
# np.Inf -> np.inf, np.unicode_ -> np.str_
~~~
repro: python -c "import numpy as np; np.float_"
check: ruff check --select NPY201 .
don't:
- replace np.float_ with np.float — np.float was already removed in NumPy 1.24 (module 'numpy' has no attribute 'float'); use np.float64 or the builtin float (×1)
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