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Warning about remaining subinterpreters should suggest using of concurrent.interpreters.Interpeter

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

topic-subinterpreters

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

Status: Open.

#141509 In python/cpython;

· sergey-miryanov opened on Nov 13, 2025

3.15 profiling, can't use ProcessPoolExecutor.map() in a simple script

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-multiprocessing

topic-profiling

topic-subinterpreters

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

Status: Open.

#140729 In python/cpython;

· dimaqq opened on Oct 28, 2025

SEGV in module interpchannels

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

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

topic-subinterpreters

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

Status: Open.

#140652 In python/cpython;

· YuanchengJiang opened on Oct 27, 2025

LeakSanitizer detects memory leaks in test_import with _testsinglephase module in subinterpreter

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

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

topic-subinterpreters

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

Status: Open.

#140404 In python/cpython;

· ashm-dev opened on Oct 21, 2025

<code>multiprocessing.Pool</code> is incompatible with <code>concurrent.interpreters</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-multiprocessing

topic-subinterpreters

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

Status: Open.

#140057 In python/cpython;

· bluetech opened on Oct 13, 2025

Assertion crash in <code>code_returns_only_none</code>

3.14bugs and security fixesbugs and security fixes

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

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

topic-subinterpreters

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

Status: Open.

#139778 In python/cpython;

· efimov-mikhail opened on Oct 8, 2025

Unclosed interpreter causes segfault after fork() in child process.

3.14bugs and security fixesbugs and security fixes

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

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

topic-subinterpreters

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

Status: Open.

#139759 In python/cpython;

· aurelwildfellner opened on Oct 8, 2025

Allow Interpreter.prepare_main() Even If the Interpreter Is Running?

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-subinterpreters

type-featureA feature request or enhancementA feature request or enhancement

Status: Open.

#139523 In python/cpython;

· ericsnowcurrently opened on Oct 2, 2025

Docs Are Not Clear on How to Share a Queue Between Interpreters

3.14bugs and security fixesbugs and security fixes

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

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-subinterpreters

Status: Open.

#139515 In python/cpython;

· ericsnowcurrently opened on Oct 2, 2025

Interpreter Methods For Main Interpreter Fail Unexpectedly

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-subinterpreters

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

Status: Open.

#139458 In python/cpython;

· ericsnowcurrently opened on Sep 30, 2025

python3.14.0rc3 idle doesn't show subinterpreter output while console does

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-IDLE

topic-subinterpreters

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

Status: Open.

#139383 In python/cpython;

· xcombelle opened on Sep 27, 2025

<code>concurrent.interpreters.Interpreter.exec</code> propagate <code>SyntaxError</code>

3.14bugs and security fixesbugs and security fixes

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

docsDocumentation in the Doc dirDocumentation in the Doc dir

topic-subinterpreters

Status: Open.

#139324 In python/cpython;

· muxator opened on Sep 25, 2025