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PERF: np.isin is very slow for StringDType

01 - Enhancement

component: numpy.stringsString dtypes and functionsString dtypes and functions

Status: Open.

#32161 In numpy/numpy;

· ngoldbaum opened on Jul 31, 2026

PERF: -ftrapping-math slows down np.less float32 loops on Apple AArch64

00 - Bug

Status: Open.

#32159 In numpy/numpy;

· a-eridani opened on Jul 31, 2026

BUG: segfault in stringdtype fancy-index array assignemnt

00 - Bug

Status: Open.

#32153 In numpy/numpy;

· ngoldbaum opened on Jul 30, 2026

BUG: Compiling fortran programme using f2py and flang leads to runtime undefined symbol: _FortranAioBeginClose

00 - Bug

Status: Open.

#32148 In numpy/numpy;

· TobiasDijkhuis opened on Jul 30, 2026

PERF: np.sin(a, where=) is slower than computing the whole array

00 - Bug

Status: Open.

#32136 In numpy/numpy;

· a-eridani opened on Jul 28, 2026

ENH: support where= in MaskedArray reductions

01 - Enhancement

Status: Open.

#32126 In numpy/numpy;

· shoumikchakravarty-dev opened on Jul 28, 2026

TYP: Type mismatch of np.indices converted to list, real type is list[list[int]], reported type is list[int]

41 - Static typing

Status: Open.

#32109 In numpy/numpy;

· Famlam opened on Jul 26, 2026

BUG: np.positive ufunc and unary + operator fail on boolean arrays, while binary arithmetic works

00 - Bug

component: numpy.ufunc

Status: Open.

#32100 In numpy/numpy;

· qiqicliff opened on Jul 25, 2026

BUG: numpy int64/float64 comparisons are inexact

00 - Bug

Status: Open.

#32071 In numpy/numpy;

· sehoffmann opened on Jul 23, 2026

ENH: implement a mask aware np.unwrap for masked arrays in the np.ma module

01 - Enhancement

component: numpy.mamasked arraysmasked arrays

Status: Open.

#32069 In numpy/numpy;

· ikrommyd opened on Jul 23, 2026

BUG: SeedSequence.spawn and np.random.set_bit_generator are not thread-safe

00 - Bug

39 - free-threadingPRs and issues related to support for free-threading CPython (a.k.a. no-GIL, PEP 703)PRs and issues related to support for free-threading CPython (a.k.a. no-GIL, PEP 703)

component: numpy.random

Status: Open.

#32063 In numpy/numpy;

· ngoldbaum opened on Jul 22, 2026

ENH: Improve the ergonomics of StringDType <-> fixed-width string casting

01 - Enhancement

component: numpy.stringsString dtypes and functionsString dtypes and functions

Status: Open.

#32031 In numpy/numpy;

· ngoldbaum opened on Jul 17, 2026