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<code>collections.UserString.rindex()</code> fails to accept <code>UserString</code> as <code>sub</code> argument

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.

#140911�?In python/cpython;

· T90REAL opened on Nov 2, 2025

wsgiref.validate is too restrictive regarding HTTP_CONTENT_LENGTH/TYPE

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#140894�?In python/cpython;

· Forty-Bot opened on Nov 1, 2025

Test tailcall + JIT on CI for 3.15 and 3.14

infraCI, GitHub Actions, buildbots, Dependabot, etc.CI, GitHub Actions, buildbots, Dependabot, etc.

topic-JIT

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#140889�?In python/cpython;

· Fidget-Spinner opened on Nov 1, 2025

Respect <code>zstd.CompressionParameter.content_size_flag</code> for streaming <code>zstd</code> when possible

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

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#140888�?In python/cpython;

· socketpair opened on Nov 1, 2025

Memory leak occurs when using multiprocessing with large data objects

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

topic-multiprocessing

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

Status: Open.

#140885�?In python/cpython;

· abhiramch018 opened on Nov 1, 2025

<code>HTMLParser.unknown_decl</code> receives corrupted data (<code>'CDATA['</code>) when parsing an empty <code>CDATA</code> section

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

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

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.

#140878�?In python/cpython;

· T90REAL opened on Nov 1, 2025

<code>html.parser(convert_charrefs=False)</code> silently drops ampersand (&amp;) on invalid named entities, causing data loss

3.13bugs and security fixesbugs and security fixes

3.14bugs and security fixesbugs and security fixes

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

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.

#140875�?In python/cpython;

· T90REAL opened on Nov 1, 2025

Allow non-descriptor callables in <code>functools.singledispatchmethod</code>

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#140873�?In python/cpython;

· T90REAL opened on Nov 1, 2025

PyREPL: auto-complete module attributes in import statements

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

topic-replRelated to the interactive shellRelated to the interactive shell

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#140870�?In python/cpython;

· loic-simon opened on Nov 1, 2025

forkserver fails silently under load causing Popen.poll() to return 255

3.14bugs and security fixesbugs and security fixes

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

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

topic-multiprocessing

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

Status: Open.

#140867�?In python/cpython;

· zmedico opened on Nov 1, 2025

Inconsistent behaviors of <code>dict.keys()</code>, <code>dict.values()</code> and <code>dict.items()</code> with <code>==</code>

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

Status: Open.

#140866�?In python/cpython;

· hyperkai opened on Oct 31, 2025

indirect memory leak with audit hook

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.

#140860�?In python/cpython;

· YuanchengJiang opened on Oct 31, 2025