Search results

functools.singledispatch registration prioritizes the types of normal arguments before positional-only ones

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.

#143886 In python/cpython;

· pR0Ps opened on Jan 15, 2026

pdb: some expression results are printed to the debuggee stdout

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.

#143874 In python/cpython;

· hyongtao-code opened on Jan 15, 2026

Python 3.14.1+ annotationlib regression: ForwardRef.__hash__ raises <code>TypeError: unhashable type: 'cell'</code>

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-typing

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

Status: Open.

#143831 In python/cpython;

· abhinand-c opened on Jan 14, 2026

Python IDLE Bug Report

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

topic-IDLE

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

Status: Open.

#143822 In python/cpython;

· FaizanBinFiros opened on Jan 14, 2026

Bare <code>AttributeError</code> in <code>__getattr__</code> shows a garbled message with attribute suggestions

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.

#143811 In python/cpython;

· johnslavik opened on Jan 13, 2026

Improve IDLE Format Paragraph doc

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-IDLE

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

Status: Open.

#143774 In python/cpython;

· terryjreedy opened on Jan 13, 2026

NEWS entries for Argument Clinic refactors should be removed

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

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

Status: Open.

#143773 In python/cpython;

· Aniketsy opened on Jan 13, 2026

venv fails with confusing ENOENT when existing venv has broken symlinks

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

topic-venvRelated to the venv moduleRelated to the venv module

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

Status: Open.

#143768 In python/cpython;

· claydugo opened on Jan 13, 2026

Data races in OpenSSL bindings

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

topic-SSL

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

Status: Open.

#143756 In python/cpython;

· colesbury opened on Jan 12, 2026

<code>tkinter</code> source and docs use the word 'slave'

docsDocumentation in the Doc dirDocumentation in the Doc dir

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

topic-tkinter

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

Status: Open.

#143754 In python/cpython;

· i-make-data-sexy opened on Jan 12, 2026

Make struct.Struct() really immutable

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

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

Status: Open.

#143715 In python/cpython;

· skirpichev opened on Jan 12, 2026

SystemError when passing invalid argument to posix_spawn

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

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

Status: Open.

#143698 In python/cpython;

· donbarbos opened on Jan 11, 2026