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Assertion failure in Modules/_io/textio.c <code>_io_TextIOWrapper_tell_impl: Assertion 'skip_back &lt;= PyBytes_GET_SIZE(next_input)' failed</code>

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

topic-IO

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

Status: Open.

#141314 In python/cpython;

·YuanchengJiang openedon Nov 9, 2025

Assertion failure in Objects/rangeobject.c <code>compute_range_length: Assertion PyLong_Check(start)' failed</code>

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.

#141312 In python/cpython;

·YuanchengJiang openedon Nov 9, 2025

Assertion failure in Modules/_io/bytesio.c <code>_io_BytesIO_readinto_impl: Assertion 'self-&gt;pos + len &lt; PY_SSIZE_T_MAX' failed.</code>

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

topic-IO

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

Status: Open.

#141311 In python/cpython;

·YuanchengJiang openedon Nov 9, 2025

Provide <code>PyExpat_CheckCompatibility</code> to check C API compatibility

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

topic-C-API

topic-XML

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#141297 In python/cpython;

·picnixz openedon Nov 9, 2025

Save <code>pdb</code> Line History Between Runs

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.

#141295 In python/cpython;

·George-Ogden openedon Nov 9, 2025

Syntax warnings are duplicated in zipimport

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

topic-importlib

Status: Open.

#141276 In python/cpython;

·serhiy-storchaka openedon Nov 9, 2025

certain f/t-string expressions not copied correctly to debug str or interpolations

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-parser

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

Status: Open.

#141271 In python/cpython;

·tom-pytel openedon Nov 8, 2025

The event loop warns only on Windows 3.14+ if it isn't closed before garbage collection

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

topic-asyncio

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

Status: Open.

#141262 In python/cpython;

·bswck openedon Nov 8, 2025

tkinter events not working since Python 3.14 w/ TK 9.0

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

topic-tkinter

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

Status: Open.

#141237 In python/cpython;

·der-eismann openedon Nov 8, 2025

Deprecate Py_HASH_EXTERNAL as it cannot be used for <code>--with-hash-algorithm</code>

buildThe build process and cross-buildThe build process and cross-build

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.

#141226 In python/cpython;

·picnixz openedon Nov 8, 2025

The 'Python Application (Windowed)' launched via the Python Installation Manager displays a console window.

3.14bugs and security fixesbugs and security fixes

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

OS-windows

topic-installation

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

Status: Open.

#141222 In python/cpython;

·Jesse205 openedon Nov 8, 2025

Rephrase general rules for comparison of objects

docsDocumentation in the Doc dirDocumentation in the Doc dir

easy

Status: Open.

#141218 In python/cpython;

·skirpichev openedon Nov 8, 2025