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-X lazy_imports=all should not apply to exec() inside functions

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new 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-lazy-imports

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

Status: Open.

#149642 In python/cpython;

· JelleZijlstra opened on May 10, 2026

Should we test -X lazy_imports=all more?

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new features, bugs and security fixesnew features, bugs and security fixes

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

topic-lazy-imports

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

Status: Open.

#149640 In python/cpython;

· JelleZijlstra opened on May 10, 2026

Remove deprecated and unused Tarfile.tarfile attribute for 3.16

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.

#149634 In python/cpython;

· sobolevn opened on May 10, 2026

pylifecycle.c: Multiple init/fini cleanup bugs

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.

#149630 In python/cpython;

· Wulian233 opened on May 10, 2026

_remote_debugging: incorrect error for process_vm_readv() w/ EPERM when detecting the cookie

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

topic-profiling

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

Status: Open.

#149619 In python/cpython;

· maurycy opened on May 9, 2026

Unguarded use of nl_langinfo on _Py_GetLocaleEncoding

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.

#149616 In python/cpython;

· AGraber opened on May 9, 2026

TypeError when trying to deepcopy argparse.ArgumentParser()

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.

#149614 In python/cpython;

· kmvanbrunt opened on May 9, 2026

Schedule removal for deprecated abc decorators

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.

#149609 In python/cpython;

· aiwonderland opened on May 9, 2026

Remove deprecated async.iscoroutinefunction for 3.16

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

topic-asyncio

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#149600 In python/cpython;

· sobolevn opened on May 9, 2026

Remove deprecated sys._enablelegacywindowsfsencoding

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.

#149595 In python/cpython;

· StanFromIreland opened on May 9, 2026

Creating multiple instances of faulthandler module causes unbalanced refcount on fatal_error.file

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

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

Status: Open.

#149590 In python/cpython;

· stestagg opened on May 9, 2026

_remote_debugging: reading whole pages over and over

3.15pre-release feature fixes, bugs and security fixespre-release feature fixes, bugs and security fixes

3.16new 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-profiling

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

Status: Open.

#149584 In python/cpython;

· maurycy opened on May 8, 2026