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Add 'half turns' functions (cospi et al) to math module following C23 & IEEE754-2019

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#150534 In python/cpython;

· jepler opened on May 27, 2026

Consider reverting the autoconf 2.72 version bump requirement as it breaks compatibility with distros

buildThe build process and cross-buildThe build process and cross-build

OS-unsupported

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#150532 In python/cpython;

· stratakis opened on May 27, 2026

python 3.14+ Incorrect note in binascii.a2b_hex documentation

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#150524 In python/cpython;

· Joshix-1 opened on May 27, 2026

http.cookiejar.domain_match() matches an interior substring instead of a suffix

Status: Open.

#150522 In python/cpython;

· metsw24-max opened on May 27, 2026

Streamline spilling around calls in the code generator

3.16new features, bugs and security fixesnew features, bugs and security fixes

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

performancePerformance or resource usagePerformance or resource usage

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#150516 In python/cpython;

· markshannon opened on May 27, 2026

Error in inspect.getattr_static usage snippet to resolve built-in C descriptors and hackiness in how it obtains these types

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#150506 In python/cpython;

· jonathandung opened on May 27, 2026

Segfault in _Unpickler_MemoPut (_pickle.c) from Unpickler.memo assignment with free-threading

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

topic-free-threading

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#150505 In python/cpython;

· Naserume opened on May 27, 2026

Incorrect claim that inspect.getattr_static and built-in getattr function have identical signatures in inspect documentation

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#150501 In python/cpython;

· jonathandung opened on May 27, 2026

http.server: BaseHTTPRequestHandler does not enforce RFC 7230 framing validation (3 defects, hardening for keep-alive)

stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory

type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Status: Open.

#150499 In python/cpython;

· tonghuaroot opened on May 27, 2026

Sampling mode for tracemalloc

extension-modulesC modules in the Modules dirC modules in the Modules dir

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#150494 In python/cpython;

· danielsn opened on May 26, 2026

Raise PyType_Modified on split key insertion to avoid cached keys version check

interpreter-core(Objects, Python, Grammar, and Parser dirs)(Objects, Python, Grammar, and Parser dirs)

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#150490 In python/cpython;

· DinoV opened on May 26, 2026

test_tracemalloc: test_tracemalloc_track_race() crashs on GHA iOS CI

testsTests in the Lib/test dirTests in the Lib/test dir

type-crashA hard crash of the interpreter, possibly with a core dumpA hard crash of the interpreter, possibly with a core dump

Status: Open.

#150485 In python/cpython;

· vstinner opened on May 26, 2026