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JIT: Assertion PyType_Check((PyObject *)type) failed

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

topic-JIT

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

Status: Open.

#149112 In python/cpython;

· devdanzin opened on Apr 28, 2026

Assertion failure: !_PyFrame_IsIncomplete(frame->f_frame)

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

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

Status: Open.

#149110 In python/cpython;

· devdanzin opened on Apr 28, 2026

Keep next_in and avail_in in sync in bz2/lzma/zlib decompressor reset paths

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

type-refactorCode refactoring (with no changes in behavior)Code refactoring (with no changes in behavior)

Status: Open.

#149105 In python/cpython;

· msmeissn opened on Apr 28, 2026

Implement PEP 788 -- Protecting the C API from Interpreter Finalization

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

topic-C-API

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#149101 In python/cpython;

· ZeroIntensity opened on Apr 28, 2026

inspect docstring is outdated

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#149096 In python/cpython;

· jonathandung opened on Apr 28, 2026

Builtin help function unwarrantedly assumes comment in first line can always be used as summary of module

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

Status: Open.

#149095 In python/cpython;

· jonathandung opened on Apr 28, 2026

Circular dependency between mapping term collections.abc.Mapping

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#149093 In python/cpython;

· Damacustas opened on Apr 28, 2026

faulthandler: make per-call thread dump cap configurable

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.

#149085 In python/cpython;

· efroemling opened on Apr 28, 2026

Use PEP 661 (sentinels) in the standard library

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

type-refactorCode refactoring (with no changes in behavior)Code refactoring (with no changes in behavior)

Status: Open.

#149083 In python/cpython;

· JelleZijlstra opened on Apr 28, 2026

Fallo en el path al instalarlo y usarlo en visual

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

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

Status: Open.

#149082 In python/cpython;

· ssquinche-oss opened on Apr 28, 2026

O(n²) insertion sort in unicodedata.normalize("NFC") canonical ordering

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

topic-unicode

type-securityA security issueA security issue

Status: Open.

#149079 In python/cpython;

· sethmlarson opened on Apr 27, 2026

test_socket tests fail with kernel lacking support for IPPROTO_UDPLITE

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.

#149078 In python/cpython;

· mcepl opened on Apr 27, 2026