NumPy 2.3.1 Release Notes#

The NumPy 2.3.1 release is a patch release with several bug fixes, annotation improvements, and better support for OpenBSD. Highlights are:

• Fix bug in matmul for non-contiguous out kwarg parameter

• Fix for Accelerate runtime warnings on M4 hardware

• Fix new in NumPy 2.3.0 np.vectorize casting errors

• Improved support of cpu features for FreeBSD and OpenBSD

This release supports Python versions 3.11-3.13, Python 3.14 will be supported when it is released.

Contributors#

A total of 9 people contributed to this release. People with a + by their names contributed a patch for the first time.

• Brad Smith +

• Charles Harris

• Developer-Ecosystem-Engineering

• Franois Rozet

• Joren Hammudoglu

• Matti Picus

• Mugundan Selvanayagam

• Nathan Goldbaum

• Sebastian Berg

Pull requests merged#

A total of 12 pull requests were merged for this release.

• #29140: MAINT: Prepare 2.3.x for further development

• #29191: BUG: fix matmul with transposed out arg (#29179)

• #29192: TYP: Backport typing fixes and improvements.

• #29205: BUG: Revert np.vectorize casting to legacy behavior (#29196)

• #29222: TYP: Backport typing fixes

• #29233: BUG: avoid negating unsigned integers in resize implementation

• #29234: TST: Fix test that uses uninitialized memory (#29232)

• #29235: BUG: Address interaction between SME and FPSR (#29223)

• #29237: BUG: Enforce integer limitation in concatenate (#29231)

• #29238: CI: Add support for building NumPy with LLVM for Win-ARM64

• #29241: ENH: Detect CPU features on OpenBSD ARM and PowerPC64

• #29242: ENH: Detect CPU features on FreeBSD / OpenBSD RISC-V64.