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Inconsisten handling of non-ASCII characters in encodings.normalize_encoding()

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

stdlibPython modules in the Lib dirPython modules in the Lib dir

topic-unicode

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

Status: Open.

#136736 In python/cpython;

·serhiy-storchaka openedon Jul 17, 2025

<code>test_free_threading.test_monitoring</code> flaky (occasional reference leak)

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

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

topic-free-threading

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

Status: Open.

#136692 In python/cpython;

·colesbury openedon Jul 15, 2025

concurrent.interpreters queue documentation doesn't match reality

3.14bugs and security fixesbugs and security fixes

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

docsDocumentation in the Doc dirDocumentation in the Doc dir

stdlibPython modules in the Lib dirPython modules in the Lib dir

topic-subinterpreters

Status: Open.

#136563 In python/cpython;

·da-woods openedon Jul 12, 2025

<code>unittest</code> may incorrectly return exit code 5 when <code>setUpClass</code> raises an exception

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

stdlibPython modules in the Lib dirPython modules in the Lib dir

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

Status: Open.

#136442 In python/cpython;

·ueshin openedon Jul 9, 2025

Performance improvement to uuid8 on “What’s New” page

3.14bugs and security fixesbugs and security fixes

docsDocumentation in the Doc dirDocumentation in the Doc dir

easy

stdlibPython modules in the Lib dirPython modules in the Lib dir

Status: Open.

#136428 In python/cpython;

·JostMigenda openedon Jul 8, 2025

_SelectorSocketTransport.writelines does not protect against connection lost

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

stdlibPython modules in the Lib dirPython modules in the Lib dir

topic-asyncio

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

Status: Open.

#136234 In python/cpython;

·bmerry openedon Jul 3, 2025

3.14 is missing a bytecode line number for one-line conditionals

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

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.

#136190 In python/cpython;

·nedbat openedon Jul 1, 2025

JIT global-to-constant promotion doesn't properly validate the globals dictionary at runtime

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

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

topic-JIT

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

Status: Open.

#136154 In python/cpython;

·brandtbucher openedon Jun 30, 2025

Possible resource exhaustation of <code>expandvars</code> in <code>Tools/freeze/checkextensions.py</code>

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

triagedThe issue has been accepted as valid by a triager.The issue has been accepted as valid by a triager.

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

Status: Open.

#136073 In python/cpython;

·kexinoh openedon Jun 28, 2025

Potential Quadratic Complexity Vulnerabilities in <code>path</code> Modules

3.10only security fixesonly security fixes

3.11only security fixesonly security fixes

3.12only security fixesonly security fixes

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

3.9only security fixesonly security fixes

stdlibPython modules in the Lib dirPython modules in the Lib dir

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

type-securityA security issueA security issue

Status: Open.

#136065 In python/cpython;

·kexinoh openedon Jun 28, 2025

Potential Quadratic Complexity Vulnerabilities in the <code>email</code> Module

3.10only security fixesonly security fixes

3.11only security fixesonly security fixes

3.12only security fixesonly security fixes

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

3.9only security fixesonly security fixes

stdlibPython modules in the Lib dirPython modules in the Lib dir

topic-email

type-securityA security issueA security issue

Status: Open.

#136063 In python/cpython;

·kexinoh openedon Jun 28, 2025

Add a Section to the Language Reference About Runtime Components

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

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#135944 In python/cpython;

·ericsnowcurrently openedon Jun 25, 2025