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PyModule_FromSlotsAndSpec and PyModule_GetToken exposed without named parameters

Status: Open.

#143883 In python/cpython;

· ngoldbaum opened on Jan 15, 2026

Data race in <code>functools.partial</code> in Python 3.14

3.14bugs and security fixesbugs and security fixes

topic-free-threading

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

Status: Open.

#143880 In python/cpython;

· colesbury 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

Add PEP 757 functions/types to the limited API

topic-C-API

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#143869 In python/cpython;

· skirpichev opened on Jan 15, 2026

Missing return value validation in pathlib's write_text and write_bytes tests

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

topic-pathlib

Status: Open.

#143866 In python/cpython;

· b9788213 opened on Jan 15, 2026

Document <code>argparse.ArgumentParser.parse_args</code> order guarantee

docsDocumentation in the Doc dirDocumentation in the Doc dir

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#143860 In python/cpython;

· pdgendt 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

Add option to quit pdb without prompt (like pre-3.14 behavior)

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.

#143824 In python/cpython;

· mayfield 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

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

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

JIT: Assertion <code>next_instr-&gt;op.code == STORE_FAST</code> failed in <code>_PyEval_EvalFrameDefault</code>

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

topic-JIT

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

Status: Open.

#143820 In python/cpython;

· devdanzin 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

JIT: Assertion <code>size &lt; MAX_EXECUTORS_SIZE</code> failed in <code>get_index_for_executor</code>

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

topic-JIT

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

Status: Open.

#143807 In python/cpython;

· devdanzin opened on Jan 13, 2026