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email.message_from_binary_file creates invalid RFC2047 encodings

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

topic-email

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

Status: Open.

#142424 In python/cpython;

· msapiro opened on Dec 8, 2025

Expose annotation to anonymous virtual memory ranges to mmap module

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

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#142419 In python/cpython;

· corona10 opened on Dec 8, 2025

<code>inspect.iscoroutinefunction()</code> does not detect marked partial objects

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.

#142418 In python/cpython;

· x42005e1f opened on Dec 8, 2025

Please restore _Py_InitializeMain or provide an alternate API for it

topic-C-API

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#142417 In python/cpython;

· kovidgoyal opened on Dec 8, 2025

<code>test_struct</code> fails for python 3.14.2 built with gcc/clang

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

topic-subinterpreters

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

Status: Open.

#142414 In python/cpython;

· ppigazzini opened on Dec 8, 2025

Warn about urlsplit()'s <code>netloc</code> not being suitable for open redirect checking

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#142412 In python/cpython;

· ThiefMaster opened on Dec 8, 2025

Indicate that surrogate literals are not allowed in docstrings since Python 3.13

docsDocumentation in the Doc dirDocumentation in the Doc dir

Status: Open.

#142411 In python/cpython;

· decorator-factory opened on Dec 8, 2025

Deprecation of PyException_HEAD

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.

#142410 In python/cpython;

· Krishna-web-hub opened on Dec 8, 2025

Update shutil.rst to clarify copy performance on Windows

docsDocumentation in the Doc dirDocumentation in the Doc dir

OS-windows

Status: Open.

#142407 In python/cpython;

· NewUserHa opened on Dec 8, 2025

_sendfile_zerocopy leaks the file selector

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.

#142403 In python/cpython;

· AZero13 opened on Dec 8, 2025

so and otherset need to be both locked when being operated on

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.

#142399 In python/cpython;

· AZero13 opened on Dec 8, 2025

<code>{}.pop([])</code> raises <code>KeyError</code> not <code>TypeError</code> - only on empty dict

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

Status: Open.

#142396 In python/cpython;

· samuelcolvin opened on Dec 8, 2025