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gh-143658: Use <code>str.lower</code> and <code>replace</code> to further improve performance of <code>importlib.metadata.Prepared.normalized</code>

awaiting merge

performancePerformance or resource usagePerformance or resource usage

topic-importlib

Status: Open (in progress).

python/cpythonnumber 144083

#144083 In python/cpython;

· hugovk opened on Jan 20, 2026

gh-144068: fix JIT tracer memory leak when daemon thread exits

awaiting merge

Status: Open (in progress).

python/cpythonnumber 144077

#144077 In python/cpython;

· cocolato opened on Jan 20, 2026

gh-144030: add check that argument is callable to Python version of functools.lru_cache

awaiting merge

Status: Open (in progress).

python/cpythonnumber 144031

#144031 In python/cpython;

· cfbolz opened on Jan 19, 2026

gh-144007: Eliminate redundant refcounting in the JIT for BINARY_OP

awaiting merge

Status: Open (in progress).

python/cpythonnumber 144011

#144011 In python/cpython;

· aisk opened on Jan 18, 2026

gh-143001 Add @cpython_only to test_sys.test_current_frames

awaiting merge

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

Status: Open (in progress).

python/cpythonnumber 144004

#144004 In python/cpython;

· youknowone opened on Jan 18, 2026

gh-143959 make test_sys import _datetime inside the test

awaiting merge

needs backport to 3.13bugs and security fixesbugs and security fixes

needs backport to 3.14bugs and security fixesbugs and security fixes

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

Status: Open (in progress).

python/cpythonnumber 144003

#144003 In python/cpython;

· youknowone opened on Jan 18, 2026

GH-143941: Move WASI-related files to Platforms/WASI

awaiting merge

Status: Open (in progress).

python/cpythonnumber 143942

#143942 In python/cpython;

· brettcannon opened on Jan 16, 2026

gh-141707: Skip TarInfo DIRTYPE normalization during GNU long name handling

awaiting merge

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

type-securityA security issueA security issue

Status: Open (in progress).

python/cpythonnumber 143934

#143934 In python/cpython;

· sethmlarson opened on Jan 16, 2026

gh-143869: Add PEP 757 functions to the limited API

awaiting merge

Status: Open (in progress).

python/cpythonnumber 143906

#143906 In python/cpython;

· skirpichev opened on Jan 16, 2026

gh-143904: Raise OverflowError instead of IndexError for too large offset in struct.pack_into()

awaiting merge

Status: Open (in progress).

python/cpythonnumber 143905

#143905 In python/cpython;

· serhiy-storchaka opened on Jan 16, 2026

gh-106318: Improve str.rstrip() method doc

awaiting merge

docsDocumentation in the Doc dirDocumentation in the Doc dir

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Status: Open (in progress).

python/cpythonnumber 143893

#143893 In python/cpython;

· adorilson opened on Jan 15, 2026

gh-106318: Add examples for str.rjust() method

awaiting merge

docsDocumentation in the Doc dirDocumentation in the Doc dir

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Status: Open (in progress).

python/cpythonnumber 143890

#143890 In python/cpython;

· adorilson opened on Jan 15, 2026