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-X tlbc undocumented in 3.14 and 3.15 command line options

3.14bugs and security fixesbugs and security fixes

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-free-threading

Status: Open.

#135805 In python/cpython;

· AnthonyHedo opened on Jun 22, 2025

<code>umask</code>ed <code>os.makedirs()</code> sometimes fails on Emscripten

3.14bugs and security fixesbugs and security fixes

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

OS-emscripten

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.

#135783 In python/cpython;

· freakboy3742 opened on Jun 21, 2025

Undocumented 3.14 C API

3.14bugs and security fixesbugs and security fixes

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-C-API

Status: Open.

#135755 In python/cpython;

· encukou opened on Jun 20, 2025

Extraneous error output when process exits after using subinterpreters

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-subinterpreters

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

Status: Open.

#135729 In python/cpython;

· a-reich opened on Jun 19, 2025

Regression in multiprocessing.set_start_method introduced in Python 3.13.4

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-multiprocessing

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

Status: Open.

#135726 In python/cpython;

· marcelotduarte opened on Jun 19, 2025

3.14.0b3 JIT build fails with <code>KeyError: 'R_X86_64_GOTPCREL'</code>

3.14bugs and security fixesbugs 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.

#135690 In python/cpython;

· zanieb opened on Jun 18, 2025

HTMLParser differences from the HTML5 specification

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.

#135661 In python/cpython;

· serhiy-storchaka opened on Jun 18, 2025

Misleading pyrepl warnings when _curses module is missing

3.14bugs and security fixesbugs and security fixes

topic-replRelated to the interactive shellRelated to the interactive shell

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

Status: Open.

#135621 In python/cpython;

· itamaro opened on Jun 17, 2025

Segmentation fault, possibly due to a GC issue

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

Status: Open.

#135552 In python/cpython;

· fxeqxmulfx opened on Jun 16, 2025

Unhandled <code>armv8l</code> key in <code>sysconfig.get_platform</code> on Android

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

OS-android

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.

#135542 In python/cpython;

· Mrakorez opened on Jun 15, 2025

Worst case quadratic complexity in HTMLParser

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-securityA security issueA security issue

Status: Open.

#135462 In python/cpython;

· serhiy-storchaka opened on Jun 13, 2025

Bytecode changes in 3.14 are not documented in <code>dis</code> module docs

3.14bugs and security fixesbugs and security fixes

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

Status: Open.

#135447 In python/cpython;

· Techcable opened on Jun 12, 2025