NumPy 2.4.5 Release Notes

NumPy 2.4.5 is a patch release that fixes bugs discovered after the 2.4.4
release, has some typing improvements, and maintains infrastructure.

This release supports Python versions 3.11-3.14

Contributors

A total of 17 people contributed to this release. People with a "+" by their
names contributed a patch for the first time.

• Aleksei Nikiforov
• Anarion Zuo +
• Ankit Ahlawat
• Breno Favaretto +
• Charles Harris
• Igor Krivenko +
• Ijtihed Kilani +
• Joren Hammudoglu
• Maarten Baert +
• Matti Picus
• Nathan Goldbaum
• Praneeth Kodumagulla +
• Ralf Gommers
• RoomWithOutRoof +
• Sebastian Berg
• Warren Weckesser
• div +

Pull requests merged

A total of 28 pull requests were merged for this release.

• #31093: MAINT: Prepare 2.4.x for further development
• #31182: TYP: fix np.shape assignability issue for python lists (#31171)
• #31197: ENH: Return rank 0 for empty matrices in matrix_rank (#30422)
• #31198: CI/BUG: add native jobs for s390x, fix bug in pack_inner...
• #31199: BUG: f2py map complex_long_double to NPY_CLONGDOUBLE
• #31205: MAINT: f2py: Stop setting re._MAXCACHE to 50.
• #31206: BUG: fix heap buffer overflow in timedelta to string casts
• #31207: MAINT: Rename ppc64le and s390x workflow (#31121)
• #31208: BUG: Fix matvec/vecmat in-place aliasing (out=input produces...
• #31209: TYP: tile: accept numpy scalars and arrays as second argument...
• #31211: DEP: Undo deprecation for np.dtype() signature used by old pickles...
• #31212: REV: Manual revert of float16 svml use (#31178)
• #31222: TYP: ix_ fix for boolean and non-1d input (#31218)
• #31329: BUG: incorrect temp elision for new-style (NEP 43) user-defined...
• #31330: TYP: fix sliding_window_view axis parameter typing
• #31335: BUG: Prevent deadlock due to downstream importing NumPy in dlopen...
• #31336: BUG: Fix segfault in nditer.multi_index when __getitem__ raises...
• #31338: TYP: Fix ruff lint error
• #31357: BUG: fix memory leak in np.zeros when fill-zero loop raises (#31320)
• #31358: BUG: np.einsum() fails with a 0-dimensional out argument and...
• #31379: BUG: Fix signed overflow issue in npy_gcd for INT_MIN on s390x...
• #31383: CI: remove Cirrus CI FreeBSD job (#31380)
• #31390: BUILD: newer MKL uses so.3
• #31391: BLD/MAINT: improve support for Intel LLVM compilers
• #31401: BUG: Avoid UB in safe[add,sub,mul] helpers (#31396)
• #31402: BUG: exclude __pycache__ directories from wheels (#31397)
• #31404: TYP: _NestedSequence type parameter default to work around...
• #31426: TYP: Fix DTypeLike runtime type-checker support (#31425)