Search results

XML tree has a cyclic tag processing bug

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

topic-XML

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

Status: Open.

#148970 In python/cpython;

· personnumber3377 opened on Apr 24, 2026

Guard _Py_FFI_SUPPORT_C_COMPLEX for complex check in ctypes

3.14bugs and security fixesbugs and security fixes

3.15new features, bugs and security fixesnew features, bugs and security fixes

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

topic-ctypes

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

Status: Open.

#148967 In python/cpython;

· sunmy2019 opened on Apr 24, 2026

xmlrpc.client lacks sanitization in methodname

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

topic-XML

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

Status: Open.

#148954 In python/cpython;

· DarkaMaul opened on Apr 24, 2026

Endless polling EOF socket

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.

#148950 In python/cpython;

· Kraksna83 opened on Apr 24, 2026

Unable to execute str(importlib.metadata.metadata("x'x'x"))

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

pendingThe issue will be closed if no feedback is providedThe issue will be closed if no feedback is provided

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

topic-importlib

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

Status: Open.

#148944 In python/cpython;

· Jesse205 opened on Apr 24, 2026

dataclass tries to generate __init__() even though the class already defines one

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

topic-dataclasses

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

Status: Open.

#148941 In python/cpython;

· tonyyuyiding opened on Apr 23, 2026

GC in 3.14t can defer too much, resulting in high memory use

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

performancePerformance or resource usagePerformance or resource usage

topic-free-threading

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

Status: Open.

#148937 In python/cpython;

· nascheme opened on Apr 23, 2026

profiling.sampling doesn't work under venv on Windows

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

topic-profiling

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

Status: Open.

#148932 In python/cpython;

· sergey-miryanov opened on Apr 23, 2026

test_urllib2.HandlerTests.test_redirect_no_path fails when proxy environment variables are set

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

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

Status: Open.

#148919 In python/cpython;

· sendaoYan opened on Apr 23, 2026

pickle protocol 5: writable in-band PickleBuffer with empty tobytes() can memoize b'' via BYTEARRAY8, so later bytes references unpickle as bytearray

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.

#148914 In python/cpython;

· madkrouger opened on Apr 23, 2026

poor scaling of descriptors in free-threading

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

performancePerformance or resource usagePerformance or resource usage

topic-free-threading

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

Status: Open.

#148906 In python/cpython;

· kumaraditya303 opened on Apr 23, 2026

with lock: can skip __exit__ when a signal handler raises right after __enter__

3.14bugs and security fixesbugs and security fixes

3.15new features, bugs and security fixesnew features, bugs and security fixes

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

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

Status: Open.

#148874 In python/cpython;

· colesbury opened on Apr 22, 2026