Implement CPython 3.14 subinterpreter APIs by youknowone · Pull Request #8605 · RustPython/RustPython

youknowone · 2026-08-28T16:37:03Z

Summary

add _interpreters, _interpchannels, and _interpqueues
implement cross-interpreter data conversion, exception snapshots, channel and queue lifecycle handling
add the CPython 3.14 concurrent.interpreters high-level API, including queues

CPython compatibility review

The implementation was compared against the CPython 3.14 sources, including argument parsing, error shapes, shareability checks, interpreter ID handling, channel defaults, queue semantics, and interpreter finalization order.

In particular, channel and queue cleanup now happens after module and atexit finalization. This preserves values written by finalizers and exposes them as UNBOUND, matching CPython behavior after the owning interpreter exits. The high-level concurrent.interpreters files are synchronized with CPython 3.14.7.

Validation

prek run --from-ref 9edd97ec4 --to-ref HEAD
cargo clippy
cargo test --workspace --exclude rustpython_wasm --exclude rustpython-venvlauncher --exclude rustpython-capi
(cd crates/capi && cargo test) — 102 passed
targeted subinterpreter defect suite — 47 passed
targeted CPython/RustPython comparisons for queue finalization, public queue API, cross-interpreter transfer, default UNBOUND handling, and interpreter destruction
clean virtual merge with current upstream/main

AI assistance

Claude (claude-opus-5) assisted with implementation. OpenAI Codex (GPT-5) assisted with CPython source comparison, lifecycle review, validation, and PR preparation. The corresponding implementation commits include the required Assisted-by trailers.

Apply the patch baseline for the low-level subinterpreter modules: - crates/vm/src/stdlib/_interpreters.rs: create/destroy/list_all/get_main/ get_current/is_running/exec/call/run_string/run_func/set___main___attrs/ is_shareable/whence and the Interpreter*Error exceptions - crates/vm/src/stdlib/_interpchannels.rs: channel create/destroy/send/recv/ list_all/list_interpreters/release/close and the Channel*Error exceptions - crates/vm/src/vm/crossinterp.rs: cross-interpreter data protocol - crates/vm/src/vm/{interpreter,mod,runtime,vm_new}.rs: interpreter registry and lifecycle plumbing the modules need - Lib/concurrent/interpreters/: high-level PEP 734 package Assisted-by: Claude:claude-opus-5

Argument matching: - Add `function::ArgSpec`, a `PyArg_ParseTupleAndKeywords` equivalent that applies the `|`, `$` and `:` markers of a format string to a `kwlist`, and route every module function of both modules through it. This enforces keyword-only parameters, rejects unexpected keywords, accepts keyword forms that were previously positional-only (`whence(id=)`, `get_config(id=)`, `set___main___attrs(id=, updates=)`, `capture_exception(exc=)`, `_register_end_types(send=, recv=)`), and reproduces the arity messages. - `O!` slots (`shared`, `updates`, `call`'s `args`/`kwargs`) now reject None, and `_PyArg_BadArgument` renders None as "None" rather than "NoneType". - `new_config` takes at most one positional `str`; `list_all` of `_interpchannels` is argument-less. - Convert arguments in `kwlist` order, so an argument's own error is raised ahead of the checks that follow it. _interpreters: - Add the `CrossInterpreterBufferView` type and build the received memoryview on it, keeping the sending interpreter's exporter out of the destination. - Build `excinfo.errdisplay` from `traceback.TracebackException`. Feature flags: - `os.fork` checks finalization before `allow_fork`, matching `os_fork_impl`. - `_thread.start_new_thread` and `start_joinable_thread` reject an interpreter without `allow_threads`. Lib/concurrent/interpreters/_crossinterp.py: restore the stripped docstrings and comments. Assisted-by: Claude:claude-opus-5

…t CPython 3.14 verify_stateless_function follows _PyFunction_VerifyStateless: it rejects non-dict builtins, a non-empty __defaults__, __kwdefaults__ or __closure__, and code whose LOAD_GLOBAL names are held by the function's globals or absent from its builtins. code_returns_only_none follows _PyCode_ReturnsOnlyNone: generator, coroutine and async-generator code is rejected up front, the instruction walk skips inline caches and maps specialized and instrumented opcodes back, and the LOAD_CONST preceding each RETURN_VALUE is compared against the index of None in co_consts. ExcInfo::capture keeps an empty exception message instead of dropping it, and builds `formatted` as `module.qualname: msg`, leaving out the builtins and __main__ modules. _interpreters.call packs the callable through _PyFunction_GetXIData before pickle and re-raises the stateless-check failure when both fail. A func, args or kwargs that cannot be rebuilt in the target, and a result without cross-interpreter data, now raise NotShareableError with the snapshot as the cause rather than being returned as excinfo. _interpreters.capture_exception() without an argument returns None. pickle_loads and _PyFunction_GetXIData attach the underlying failure as __cause__. channel_send converts the object to cross-interpreter data after the channel's `closing` check. ChannelID rich comparison returns the result of comparing its id with the other number instead of coercing that result to bool. PyMemoryView_FromObjectAndFlags raises "memoryview: a bytes-like object is required, not 'X'" for an object that is not a buffer. Assisted-by: Claude:claude-opus-5

Bound shareable ints by isize, raising OverflowError("try sending as bytes") outside that range and keeping it as the NotShareableError cause. Report an unshareable object by its repr, and attach a failing conversion as __cause__ of the NotShareableError raised for the object it was called for, so each level of a nested tuple appears in the chain. Guard each tuple item conversion with with_recursion("while sharing a tuple"). Gate the memoryview getdata function on `_interpreters` having been imported, and route channel_send_buffer through a memoryview so it uses that function and the resolved fallback. Create the cross-interpreter exception types from the module_exec of either module that raises them, instead of only `_interpreters`. parse_cid raises OverflowError("int too big to convert"); int_arg reproduces the `i` converter's three overflow messages and is also used while parsing channel_send arguments. Add BASETYPE to _queue.Empty, and gate nt.execv/nt.execve on allow_exec. Assisted-by: Claude:claude-opus-5

_PyInterpreterState_ObjectToID accepts any object with __index__, raises OverflowError("int too big to convert") outside the int64 range, and reports a negative ID with the repr of the original object. channelsmod_send reads the channel's default unboundop and fallback only when one of the two arguments is negative, so an explicit pair is validated before the channel is looked up. Assisted-by: Claude:claude-opus-5

_interpqueues holds a process-wide queue table and exposes create, destroy, list_all, put, get, bind, release, get_maxsize, get_queue_defaults, is_full, get_count and _register_heap_types, raising QueueError and QueueNotFoundError. QueueEmpty and QueueFull, which subclass queue.Empty and queue.Full, are registered per interpreter by concurrent.interpreters._queues. Cross-interpreter data carries a queue as a refcounted queue ID that binds when the data is captured and releases when it is dropped, and is_shareable reports a registered Queue as shareable. Queue and channel items owned by an interpreter are now cleared from Interpreter::finalize, after module finalization, rather than from destroy_owned_interpreter, so values sent by an atexit callback also become unbound. is_shareable gates memoryview on the same registration flag as the getdata lookup. Assisted-by: Claude:claude-opus-5

Interpreter, ExecutionFailed and the queue aliases, copied verbatim from CPython 3.14. Assisted-by: Claude:claude-opus-5

coderabbitai · 2026-08-28T16:37:11Z

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github-actions · 2026-08-28T16:38:02Z

📦 Library Dependencies

The following Lib/ modules were modified. Here are their dependencies:

[ ] lib: cpython/Lib/difflib.py
[ ] test: cpython/Lib/test/test_difflib.py

dependencies:

difflib
- collections (native: _collections, _weakref, itertools, sys)
- heapq, re, types

dependent tests: (243 tests)

[x] lib: cpython/Lib/io.py
[ ] lib: cpython/Lib/_pyio.py
[ ] test: cpython/Lib/test/test_io.py (TODO: 13)
[x] test: cpython/Lib/test/test_bufio.py
[x] test: cpython/Lib/test/test_fileio.py (TODO: 1)
[ ] test: cpython/Lib/test/test_memoryio.py (TODO: 3)

dependencies:

io (native: _io, _thread, errno, msvcrt, sys)
- _pyio
- locale (native: _locale, builtins, encodings.aliases, sys)
- warnings (native: _contextvars, _thread, _warnings, builtins, sys)
- _collections_abc, abc, codecs, os, stat

dependent tests: (108 tests)

io: test__colorize test_android test_argparse test_ast test_asyncio test_base64 test_buffer test_bufio test_builtin test_bz2 test_calendar test_cmd test_cmd_line_script test_codecs test_compile test_compileall test_compiler_assemble test_concurrent_futures test_configparser test_contextlib test_csv test_dbm_dumb test_descr test_dis test_email test_enum test_file test_fileinput test_fileio test_ftplib test_generated_cases test_getpass test_gzip test_hashlib test_http_cookiejar test_httplib test_httpservers test_importlib test_inspect test_io test_json test_largefile test_logging test_lzma test_mailbox test_marshal test_memoryio test_memoryview test_mimetypes test_minidom test_multibytecodec test_optparse test_pathlib test_pdb test_peg_generator test_pickle test_pickletools test_platform test_plistlib test_pprint test_print test_profile test_pstats test_pty test_pulldom test_pydoc test_pyexpat test_pyrepl test_quopri test_regrtest test_robotparser test_sax test_shlex test_shutil test_site test_smtplib test_socket test_socketserver test_subprocess test_support test_sys test_tarfile test_tempfile test_threadedtempfile test_timeit test_tokenize test_traceback test_types test_typing test_unittest test_univnewlines test_urllib test_urllib2 test_uuid test_wave test_webbrowser test_winconsoleio test_wsgiref test_xml_dom_xmlbuilder test_xml_etree test_xml_etree_c test_xmlrpc test_xpickle test_zipapp test_zipfile test_zipimport test_zoneinfo test_zstd

[ ] lib: cpython/Lib/concurrent
[ ] test: cpython/Lib/test/test_concurrent_futures (TODO: 4)
[ ] test: cpython/Lib/test/test_interpreters
[ ] test: cpython/Lib/test/test__interpreters.py
[ ] test: cpython/Lib/test/test__interpchannels.py
[ ] test: cpython/Lib/test/test_crossinterp.py

dependencies:

concurrent (native: _crossinterp, _interpqueues, _interpreters, _queues, concurrent.futures, concurrent.futures._base, interpreter, itertools, multiprocessing.connection, multiprocessing.queues, multiprocessing.synchronize, process, sys, thread, time)
- logging (native: atexit, collections.abc, email.message, email.utils, errno, http.client, logging.handlers, multiprocessing.queues, select, sys, time, urllib.parse, win32evtlog, win32evtlogutil)
- multiprocessing (native: _multiprocessing, _posixshmem, _posixsubprocess, _winapi, array, atexit, collections.abc, connection, context, dummy, errno, forkserver, heap, itertools, managers, mmap, msvcrt, multiprocessing.connection, pool, popen_fork, popen_forkserver, popen_spawn_posix, popen_spawn_win32, queues, resource_sharer, resource_tracker, sharedctypes, spawn, synchronize, sys, time, util, xmlrpc.client)
- pickle (native: _pickle, itertools, sys)
- collections
- functools, os, queue, threading, traceback, types, weakref

dependent tests: (17 tests)

concurrent: test_asyncio test_compileall test_concurrent_futures test_context test_genericalias test_inspect test_struct test_sys test_threading test_types test_wmi
- asyncio: test_asyncio test_external_inspection test_logging test_os test_pdb test_unittest

[ ] lib: cpython/Lib/glob.py
[x] test: cpython/Lib/test/test_glob.py

dependencies:

glob (native: itertools, sys)
- warnings
- contextlib, fnmatch, functools, operator, os, re, stat

dependent tests: (58 tests)

glob: test_bz2 test_glob test_mailbox test_regrtest test_site test_tokenize test_unicode_file test_zipimport
- pathlib: test_ast test_dbm_sqlite3 test_ensurepip test_httpservers test_importlib test_json test_launcher test_logging test_pathlib test_peg_generator test_pkgutil test_pyrepl test_runpy test_tarfile test_tempfile test_tomllib test_tools test_traceback test_unparse test_venv test_winapi test_zipapp test_zipfile test_zoneinfo test_zstd
  - compileall: test_compileall
  - importlib: test_asdl_parser test_bdb test_cmd_line_script test_codecs test_ctypes test_doctest test_external_inspection test_frozen test_hashlib test_importlib test_inspect test_linecache test_modulefinder test_multiprocessing_main_handling test_py_compile test_pyclbr test_pydoc test_reprlib test_sundry test_support test_unittest test_zipfile test_zoneinfo
  - zipapp: test_pdb

[ ] lib: cpython/Lib/email
[ ] test: cpython/Lib/test/test_email (TODO: 8)

dependencies:

email (native: binascii, email._encoded_words, email._parseaddr, email._policybase, email.base64mime, email.charset, email.contentmanager, email.encoders, email.errors, email.feedparser, email.generator, email.headerregistry, email.iterators, email.message, email.mime.base, email.mime.nonmultipart, email.parser, email.policy, email.quoprimime, email.utils, sys, time, urllib.parse)
- base64 (native: binascii, sys)
- datetime (native: _datetime, _thread, math, sys, time)
- random (native: _random, _sha2, itertools, math, time)
- socket (native: _socket, array, errno, sys)
- string (native: _string, itertools)
- urllib (native: _scproxy, email.utils, http.client, http.cookiejar, math, sys, time, unicodedata, urllib.error, urllib.parse, urllib.request, urllib.response, winreg)
- collections, io
- abc, calendar, copy, functools, operator, os, quopri, re, types

dependent tests: (53 tests)

[x] lib: cpython/Lib/ast.py
[x] lib: cpython/Lib/_ast_unparse.py
[x] test: cpython/Lib/test/test_unparse.py
[x] test: cpython/Lib/test/test_type_comments.py

dependencies:

ast

dependent tests: (149 tests)

[ ] lib: cpython/Lib/compression

dependencies:

compression (native: _zstd, compression._common, compression.zstd._zstdfile, sys, zlib)
- io
- bz2, enum, gzip, lzma, os

dependent tests: (100 tests)

[ ] lib: cpython/Lib/json
[ ] test: cpython/Lib/test/test_json (TODO: 10)

dependencies:

json (native: _json, decoder, encoder, json.tool, sys)
- argparse (native: sys)
- _colorize, codecs, re

dependent tests: (13 tests)

json: test_embed test_logging test_plistlib test_pyrepl test_subprocess test_sysconfig test_tomllib test_tools test_traceback test_zoneinfo
- importlib.metadata: test_importlib
- multiprocessing.resource_tracker: test_concurrent_futures
- pdb: test_pdb

[ ] lib: cpython/Lib/mimetypes.py
[ ] test: cpython/Lib/test/test_mimetypes.py

dependencies:

mimetypes (native: _winapi, sys, urllib.parse, winreg)
- argparse, warnings
- os, posixpath

dependent tests: (42 tests)

mimetypes: test_mimetypes
- http.server: test_httpservers test_logging test_robotparser test_urllib2_localnet test_xmlrpc
  - pydoc: test_enum test_pydoc
  - wsgiref.simple_server: test_wsgiref
  - xmlrpc.server: test_docxmlrpc
- urllib.request: test_http_cookiejar test_pathlib test_sax test_site test_ssl test_urllib test_urllib2 test_urllib2net test_urllibnet
  - pathlib: test_ast test_dbm_sqlite3 test_ensurepip test_importlib test_json test_launcher test_pathlib test_peg_generator test_pkgutil test_pyrepl test_runpy test_tarfile test_tempfile test_tomllib test_tools test_traceback test_unparse test_venv test_winapi test_zipapp test_zipfile test_zoneinfo test_zstd

[ ] lib: cpython/Lib/dataclasses.py
[ ] test: cpython/Lib/test/test_dataclasses (TODO: 1)

dependencies:

dataclasses (native: itertools, sys)
- inspect (native: builtins, collections.abc, importlib.machinery, itertools, sys)
- typing (native: _typing, collections.abc, sys)
- abc, annotationlib, copy, keyword, re, reprlib, types

dependent tests: (98 tests)

dataclasses: test__colorize test_copy test_ctypes test_enum test_genericalias test_patma test_pprint test_pydoc test_regrtest test_typing test_zoneinfo
- pprint: test_htmlparser test_ssl test_sys_setprofile test_unittest
  - pdb: test_pdb
  - pickle: test_annotationlib test_argparse test_array test_ast test_asyncio test_bool test_builtin test_bytes test_bz2 test_codecs test_collections test_concurrent_futures test_configparser test_coroutines test_csv test_ctypes test_decimal test_defaultdict test_deque test_descr test_dict test_dictviews test_email test_enumerate test_exceptions test_fractions test_functools test_generators test_http_cookies test_importlib test_inspect test_io test_ipaddress test_iter test_itertools test_list test_logging test_lzma test_memoryio test_memoryview test_minidom test_opcache test_operator test_ordered_dict test_os test_pathlib test_pickle test_picklebuffer test_pickletools test_platform test_plistlib test_positional_only_arg test_posix test_random test_range test_re test_set test_shelve test_slice test_socket test_statistics test_str test_string test_structseq test_super test_time test_trace test_tuple test_turtle test_type_aliases test_type_params test_types test_unittest test_uuid test_xml_dom_minicompat test_xml_etree test_xpickle test_zipfile test_zlib test_zoneinfo
- pstats: test_profile test_pstats

[ ] lib: cpython/Lib/html
[x] lib: cpython/Lib/_markupbase.py
[x] test: cpython/Lib/test/test_html.py
[ ] test: cpython/Lib/test/test_htmlparser.py

dependencies:

html (native: html.entities)
- _markupbase
- _markupbase, re

dependent tests: (14 tests)

html: test_codeccallbacks test_html test_htmlparser test_httpservers test_sundry test_xml_etree
- http.server: test_logging test_robotparser test_urllib2_localnet test_xmlrpc
  - pydoc: test_enum test_pydoc
  - wsgiref.simple_server: test_wsgiref
  - xmlrpc.server: test_docxmlrpc

[ ] lib: cpython/Lib/urllib
[ ] test: cpython/Lib/test/test_urllib.py
[ ] test: cpython/Lib/test/test_urllib2.py
[x] test: cpython/Lib/test/test_urllib2_localnet.py
[x] test: cpython/Lib/test/test_urllib2net.py
[x] test: cpython/Lib/test/test_urllibnet.py
[ ] test: cpython/Lib/test/test_urlparse.py
[x] test: cpython/Lib/test/test_urllib_response.py
[ ] test: cpython/Lib/test/test_robotparser.py

dependencies:

urllib

dependent tests: (80 tests)

[x] lib: cpython/Lib/getopt.py
[ ] test: cpython/Lib/test/test_getopt.py

dependencies:

getopt

dependent tests: (42 tests)

[ ] lib: cpython/Lib/csv.py
[ ] test: cpython/Lib/test/test_csv.py (TODO: 3)

dependencies:

csv (native: _csv)
- io
- re, types

dependent tests: (4 tests)

csv: test_csv test_genericalias
- importlib.metadata: test_importlib test_zoneinfo

[x] lib: cpython/Lib/calendar.py
[ ] test: cpython/Lib/test/test_calendar.py

dependencies:

calendar

dependent tests: (29 tests)

calendar: test_calendar test_imaplib test_strftime
- http.cookiejar: test_http_cookiejar test_urllib2
  - urllib.request: test_pathlib test_pydoc test_sax test_site test_ssl test_urllib test_urllib2_localnet test_urllib2net test_urllibnet
- mailbox: test_genericalias test_mailbox
- ssl: test_asyncio test_ftplib test_httplib test_httpservers test_logging test_poplib test_venv test_xmlrpc
  - asyncio.selector_events: test_asyncio
  - logging.handlers: test_concurrent_futures test_pkgutil
  - smtplib: test_smtplib test_smtpnet

[ ] test: cpython/Lib/test/test_str.py (TODO: 5)
[ ] test: cpython/Lib/test/test_fstring.py (TODO: 14)
[x] test: cpython/Lib/test/test_string_literals.py (TODO: 4)

dependencies:

dependent tests: (no tests depend on str)

[x] lib: cpython/Lib/datetime.py
[x] lib: cpython/Lib/_strptime.py
[ ] lib: cpython/Lib/_pydatetime.py
[ ] test: cpython/Lib/test/test_datetime.py
[x] test: cpython/Lib/test/test_strptime.py

dependencies:

datetime

dependent tests: (67 tests)

[ ] lib: cpython/Lib/base64.py
[x] test: cpython/Lib/test/test_base64.py

dependencies:

base64

dependent tests: (54 tests)

[ ] test: cpython/Lib/test/test_unicodedata.py (TODO: 13)
[x] test: cpython/Lib/test/test_unicode_file.py
[x] test: cpython/Lib/test/test_unicode_file_functions.py
[x] test: cpython/Lib/test/test_unicode_identifiers.py (TODO: 1)
[x] test: cpython/Lib/test/test_ucn.py (TODO: 4)

dependencies:

dependent tests: (no tests depend on unicode)

[x] lib: cpython/Lib/colorsys.py
[ ] test: cpython/Lib/test/test_colorsys.py

dependencies:

colorsys

dependent tests: (1 tests)

colorsys: test_colorsys

[x] lib: cpython/Lib/os.py
[ ] test: cpython/Lib/test/test_os.py (TODO: 2)
[x] test: cpython/Lib/test/test_popen.py

dependencies:

os

dependent tests: (187 tests)

os: test___all__ test__osx_support test_argparse test_asdl_parser test_ast test_asyncio test_atexit test_base64 test_baseexception test_bdb test_bool test_buffer test_builtin test_bytes test_bz2 test_c_locale_coercion test_calendar test_clinic test_cmd_line test_cmd_line_script test_codecs test_compile test_compileall test_concurrent_futures test_configparser test_contextlib test_ctypes test_dbm test_dbm_dumb test_dbm_sqlite3 test_decimal test_devpoll test_doctest test_dtrace test_eintr test_embed test_ensurepip test_enum test_epoll test_exception_hierarchy test_exceptions test_external_inspection test_faulthandler test_fcntl test_file test_file_eintr test_filecmp test_fileinput test_fileio test_fileutils test_float test_fnmatch test_fork1 test_fractions test_fstring test_ftplib test_future_stmt test_generated_cases test_genericalias test_genericpath test_getpass test_gettext test_glob test_graphlib test_gzip test_hash test_hashlib test_http_cookiejar test_httplib test_httpservers test_imaplib test_importlib test_inspect test_io test_ioctl test_json test_kqueue test_largefile test_launcher test_linecache test_locale test_logging test_lzma test_mailbox test_marshal test_math test_mimetypes test_mmap test_modulefinder test_msvcrt test_multiprocessing_forkserver test_multiprocessing_main_handling test_multiprocessing_spawn test_netrc test_ntpath test_openpty test_optparse test_os test_pathlib test_pdb test_peg_generator test_perfmaps test_pkg test_pkgutil test_platform test_plistlib test_poll test_popen test_poplib test_posix test_posixpath test_profile test_pstats test_pty test_py_compile test_pydoc test_pyexpat test_pyrepl test_random test_regrtest test_repl test_reprlib test_robotparser test_runpy test_sax test_script_helper test_selectors test_shelve test_shutil test_signal test_site test_smtpnet test_socket test_socketserver test_sqlite3 test_ssl test_stat test_string_literals test_strptime test_structseq test_subprocess test_support test_sys test_sys_settrace test_sysconfig test_tabnanny test_tarfile test_tempfile test_termios test_thread test_threading test_threadsignals test_time test_tokenize test_tools test_trace test_tracemalloc test_tty test_turtle test_typing test_unicode_file test_unicode_file_functions test_unittest test_univnewlines test_urllib test_urllib2 test_urllib2_localnet test_urllib2net test_urllibnet test_uuid test_venv test_wait3 test_wait4 test_wave test_webbrowser test_winapi test_winconsoleio test_winreg test_winsound test_wsgiref test_xml_etree test_xpickle test_zipfile test_zipimport test_zipimport_support test_zoneinfo test_zstd

[ ] test: cpython/Lib/test/test_isinstance.py

dependencies:

dependent tests: (no tests depend on isinstance)

[ ] lib: cpython/Lib/socket.py
[ ] test: cpython/Lib/test/test_socket.py (TODO: 15)

dependencies:

socket

dependent tests: (101 tests)

[ ] test: cpython/Lib/test/test_exceptions.py (TODO: 22)
[ ] test: cpython/Lib/test/test_baseexception.py
[x] test: cpython/Lib/test/test_except_star.py (TODO: 1)
[ ] test: cpython/Lib/test/test_exception_group.py (TODO: 5)
[x] test: cpython/Lib/test/test_exception_hierarchy.py (TODO: 2)
[x] test: cpython/Lib/test/test_exception_variations.py

dependencies:

dependent tests: (no tests depend on exception)

[ ] lib: cpython/Lib/random.py
[ ] test: cpython/Lib/test/test_random.py

dependencies:

random

dependent tests: (140 tests)

[ ] lib: cpython/Lib/collections
[x] lib: cpython/Lib/_collections_abc.py
[x] test: cpython/Lib/test/test_collections.py
[x] test: cpython/Lib/test/test_deque.py (TODO: 2)
[x] test: cpython/Lib/test/test_defaultdict.py
[ ] test: cpython/Lib/test/test_ordered_dict.py (TODO: 7)

dependencies:

collections

dependent tests: (331 tests)

[ ] test: cpython/Lib/test/test_syntax.py (TODO: 65)

dependencies:

dependent tests: (no tests depend on syntax)

[ ] lib: cpython/Lib/argparse.py
[ ] test: cpython/Lib/test/test_argparse.py

dependencies:

argparse

dependent tests: (258 tests)

[x] lib: cpython/Lib/weakref.py
[x] lib: cpython/Lib/_weakrefset.py
[ ] test: cpython/Lib/test/test_weakref.py (TODO: 10)
[x] test: cpython/Lib/test/test_weakset.py

dependencies:

weakref

dependent tests: (222 tests)

[ ] test: cpython/Lib/test/test_dict.py (TODO: 4)
[x] test: cpython/Lib/test/test_dictcomps.py (TODO: 1)
[ ] test: cpython/Lib/test/test_dictviews.py (TODO: 1)
[x] test: cpython/Lib/test/test_userdict.py
[ ] test: cpython/Lib/test/mapping_tests.py

dependencies:

dependent tests: (no tests depend on dict)

[ ] lib: cpython/Lib/pydoc.py
[ ] lib: cpython/Lib/pydoc_data
[ ] test: cpython/Lib/test/test_pydoc (TODO: 31)

dependencies:

pydoc (native: _pyrepl.pager, builtins, email.message, http.server, importlib._bootstrap, importlib._bootstrap_external, importlib.machinery, importlib.util, pydoc_data.topics, select, sys, time, urllib.parse)
- pydoc_data
- platform (native: _wmi, itertools, java.lang, sys, vms_lib, winreg)
- pydoc_data
- sysconfig (native: _sysconfig, _winapi, importlib.machinery, importlib.util, os.path, sys)
- collections, inspect, io, warnings
- future, annotationlib, ast, getopt, os, pkgutil, re, reprlib, textwrap, threading, tokenize, traceback, webbrowser

dependent tests: (5 tests)

pydoc: test_enum test_pydoc
- pdb: test_pdb
- xmlrpc.server: test_docxmlrpc test_xmlrpc

[x] lib: cpython/Lib/shlex.py
[ ] test: cpython/Lib/test/test_shlex.py

dependencies:

shlex

dependent tests: (10 tests)

shlex: test_mimetypes test_random test_regrtest test_shlex test_venv test_webbrowser
- pdb: test_pdb
- webbrowser:
  - pydoc: test_enum test_pydoc
  - wsgiref.simple_server: test_wsgiref

[x] lib: cpython/Lib/copy.py
[ ] test: cpython/Lib/test/test_copy.py

dependencies:

copy

dependent tests: (321 tests)

[ ] test: cpython/Lib/test/test_atexit.py (TODO: 1)
[x] test: cpython/Lib/test/_test_atexit.py

dependencies:

dependent tests: (177 tests)

[x] lib: cpython/Lib/struct.py
[ ] test: cpython/Lib/test/test_struct.py (TODO: 3)

dependencies:

struct

dependent tests: (179 tests)

[ ] lib: cpython/Lib/locale.py
[ ] test: cpython/Lib/test/test_locale.py
[x] test: cpython/Lib/test/test__locale.py

dependencies:

locale

dependent tests: (104 tests)

[ ] test: cpython/Lib/test/test_list.py (TODO: 3)
[x] test: cpython/Lib/test/test_listcomps.py (TODO: 1)
[ ] test: cpython/Lib/test/test_userlist.py (TODO: 1)

dependencies:

dependent tests: (no tests depend on list)

[ ] lib: cpython/Lib/test/support
[ ] test: cpython/Lib/test/test_support.py (TODO: 1)
[x] test: cpython/Lib/test/test_script_helper.py

dependencies:

support (native: main, _hashlib, _helpers, _hmac, _imp, _interpchannels, _opcode, _remote_debugging, _testcapi, _testinternalcapi, _testlimitedcapi, _thread, _winapi, asyncio.events, collections.abc, concurrent.interpreters, concurrent.interpreters._crossinterp, ctypes.wintypes, email._header_value_parser, errno, faulthandler, gc, hypothesis, hypothesis.configuration, hypothesis.database, import_helper, importlib.machinery, importlib.util, logging.handlers, marshal, math, msvcrt, os.path, os_helper, pwd, resource, script_helper, select, setuptools, setuptools._distutils, sys, time, unicodedata, unittest.case, urllib.error, urllib.parse, urllib.request, zlib)
- ctypes (native: _ctypes, ctypes._aix, ctypes._endian, ctypes.macholib.dyld, ctypes.macholib.dylib, ctypes.macholib.framework, importlib.machinery, itertools, nt, sys)
- opcode (native: _opcode, builtins)
- tempfile (native: _thread, errno, sys)
- tkinter (native: _tkinter, itertools, sys, tkinter.commondialog, tkinter.constants, tkinter.dialog, tkinter.simpledialog)
- unittest (native: _io, _log, async_case, builtins, case, loader, main, os.path, result, runner, signals, suite, sys, time, unittest.util, util)
- venv (native: _winapi, sys)
- collections, compression, dataclasses, datetime, glob, inspect, io, locale, logging, multiprocessing, platform, socket, string, sysconfig, warnings
- _colorize, annotationlib, ast, bz2, codecs, contextlib, decimal, dis, enum, functools, getopt, getpass, gzip, hashlib, importlib, lzma, os, pathlib, py_compile, re, selectors, shlex, shutil, signal, smtplib, stat, struct, subprocess, textwrap, threading, tracemalloc, types, zipfile

dependent tests: (2 tests)

support: test_pathlib test_pyrepl

[x] lib: cpython/Lib/code.py
[x] test: cpython/Lib/test/test_code_module.py (TODO: 2)

dependencies:

code

dependent tests: (2 tests)
- [x] pdb: test_pdb
- [ ] sqlite3.main: test_sqlite3

[x] lib: cpython/Lib/compileall.py
[ ] test: cpython/Lib/test/test_compileall.py (TODO: 2)

dependencies:

compileall

dependent tests: (1 tests)

compileall: test_compileall

[ ] lib: cpython/Lib/string
[x] test: cpython/Lib/test/test_userstring.py

dependencies:

string

dependent tests: (75 tests)

[x] lib: cpython/Lib/dis.py
[x] test: cpython/Lib/test/test_dis.py (TODO: 7)

dependencies:

dis

dependent tests: (77 tests)

[ ] lib: cpython/Lib/ntpath.py
[x] test: cpython/Lib/test/test_ntpath.py

dependencies:

ntpath (native: _winapi, nt, sys)
- genericpath, os, re

dependent tests: (53 tests)

ntpath: test_httpservers test_ntpath test_pathlib
- pathlib: test_ast test_dbm_sqlite3 test_ensurepip test_importlib test_json test_launcher test_logging test_pathlib test_peg_generator test_pkgutil test_pyrepl test_runpy test_tarfile test_tempfile test_tomllib test_tools test_traceback test_unparse test_venv test_winapi test_zipapp test_zipfile test_zoneinfo test_zstd
  - compileall: test_compileall
  - importlib: test_asdl_parser test_bdb test_cmd_line_script test_codecs test_ctypes test_doctest test_external_inspection test_frozen test_hashlib test_importlib test_inspect test_linecache test_modulefinder test_multiprocessing_main_handling test_py_compile test_pyclbr test_pydoc test_reprlib test_sundry test_support test_unittest test_zipfile test_zipimport test_zoneinfo
  - zipapp: test_pdb

[ ] lib: cpython/Lib/configparser.py
[ ] test: cpython/Lib/test/test_configparser.py

dependencies:

configparser (native: collections.abc, itertools, sys)
- collections, io
- contextlib, functools, os, re

dependent tests: (2 tests)

configparser: test_configparser test_logging

[ ] test: cpython/Lib/test/test_compile.py
[x] test: cpython/Lib/test/test_compiler_assemble.py
[x] test: cpython/Lib/test/test_compiler_codegen.py
[x] test: cpython/Lib/test/test_peepholer.py (TODO: 3)

dependencies:

dependent tests: (no tests depend on compile)

[ ] test: cpython/Lib/test/test_bigmem.py (TODO: 1)

dependencies:

dependent tests: (no tests depend on bigmem)

[x] lib: cpython/Lib/pickle.py
[ ] lib: cpython/Lib/_compat_pickle.py
[x] test: cpython/Lib/test/picklecommon.py
[ ] test: cpython/Lib/test/test_pickle.py (TODO: 19)
[ ] test: cpython/Lib/test/test_picklebuffer.py (TODO: 12)
[ ] test: cpython/Lib/test/test_pickletools.py (TODO: 8)
[x] test: cpython/Lib/test/test_xpickle.py
[x] test: cpython/Lib/test/xpickle_worker.py

dependencies:

pickle

dependent tests: (102 tests)

pickle: test_annotationlib test_argparse test_array test_ast test_asyncio test_bool test_builtin test_bytes test_bz2 test_codecs test_collections test_concurrent_futures test_configparser test_coroutines test_csv test_ctypes test_decimal test_defaultdict test_deque test_descr test_dict test_dictviews test_email test_enum test_enumerate test_exceptions test_fractions test_functools test_generators test_genericalias test_http_cookies test_importlib test_inspect test_io test_ipaddress test_iter test_itertools test_list test_logging test_lzma test_memoryio test_memoryview test_minidom test_opcache test_operator test_ordered_dict test_os test_pathlib test_pickle test_picklebuffer test_pickletools test_platform test_plistlib test_positional_only_arg test_posix test_random test_range test_re test_set test_shelve test_slice test_socket test_statistics test_str test_string test_structseq test_super test_time test_trace test_tuple test_turtle test_type_aliases test_type_params test_types test_typing test_unittest test_uuid test_xml_dom_minicompat test_xml_etree test_xpickle test_zipfile test_zlib test_zoneinfo
- logging: test_asyncio test_concurrent_futures test_hashlib test_pkgutil test_support test_urllib2net
  - asyncio.futures: test_asyncio
  - hashlib: test_hmac test_smtplib test_tarfile test_unicodedata test_urllib2_localnet
  - http.cookiejar: test_http_cookiejar test_urllib2
  - multiprocessing.util: test_asyncio test_compileall test_concurrent_futures
  - venv: test_venv
- tracemalloc: test_tracemalloc

[ ] test: cpython/Lib/test/test_array.py (TODO: 3)

dependencies:

dependent tests: (102 tests)

[ ] test: cpython/Lib/test/test_math.py (TODO: 1)
[x] test: cpython/Lib/test/test_math_property.py

dependencies:

dependent tests: (245 tests)

[ ] test: cpython/Lib/test/test_enumerate.py

dependencies:

dependent tests: (no tests depend on enumerate)

[ ] test: cpython/Lib/test/test_descr.py (TODO: 32)
[ ] test: cpython/Lib/test/test_descrtut.py (TODO: 3)

dependencies:

dependent tests: (no tests depend on descr)

[ ] lib: cpython/Lib/inspect.py
[ ] test: cpython/Lib/test/test_inspect (TODO: 30)

dependencies:

inspect

dependent tests: (96 tests)

[x] test: cpython/Lib/test/test_thread.py (TODO: 3)
[x] test: cpython/Lib/test/test_thread_local_bytecode.py
[x] test: cpython/Lib/test/test_threadsignals.py

dependencies:

dependent tests: (14 tests)
- [ ] concurrent.futures: test_asyncio test_compileall test_concurrent_futures test_context test_genericalias test_inspect test_struct test_wmi
- [ ] asyncio: test_asyncio test_external_inspection test_logging test_os test_pdb test_unittest

[x] lib: cpython/Lib/py_compile.py
[ ] test: cpython/Lib/test/test_py_compile.py (TODO: 1)

dependencies:

py_compile

dependent tests: (44 tests)

py_compile: test_argparse test_cmd_line_script test_compileall test_importlib test_modulefinder test_multiprocessing_main_handling test_py_compile test_pydoc test_runpy
- zipfile: test_pdb test_pkgutil test_shutil test_zipapp test_zipfile test_zipfile64 test_zipimport test_zipimport_support
  - importlib.metadata: test_importlib test_zoneinfo
  - shutil: test_bz2 test_ctypes test_embed test_filecmp test_glob test_httpservers test_importlib test_inspect test_largefile test_launcher test_logging test_os test_peg_generator test_reprlib test_sax test_site test_string_literals test_subprocess test_support test_sysconfig test_tarfile test_tempfile test_traceback test_unicode_file test_venv

[x] lib: cpython/Lib/codeop.py
[ ] test: cpython/Lib/test/test_codeop.py (TODO: 2)

dependencies:

codeop

dependent tests: (104 tests)

[x] test: cpython/Lib/test/test_marshal.py (TODO: 5)

dependencies:

dependent tests: (25 tests)

marshal: test_bool test_exceptions test_importlib test_inspect test_marshal test_zipimport
- importlib._bootstrap_external: test_importlib test_unittest
  - modulefinder: test_importlib test_modulefinder
  - py_compile: test_argparse test_cmd_line_script test_compileall test_importlib test_multiprocessing_main_handling test_py_compile test_pydoc test_runpy
  - pydoc: test_enum
- pkgutil: test_pkgutil test_pyrepl
- profile: test_profile
- pstats: test_pstats
- zipimport: test_importlib test_zipimport_support

Legend:

[+] path exists in CPython
[x] up-to-date, [ ] outdated

ShaharNaveh

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youknowone added 7 commits August 22, 2026 14:20

Add the high-level concurrent.interpreters API

3d65a8a

Interpreter, ExecutionFailed and the queue aliases, copied verbatim from CPython 3.14. Assisted-by: Claude:claude-opus-5

ShaharNaveh approved these changes Aug 28, 2026

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Implement CPython 3.14 subinterpreter APIs - #8605

Implement CPython 3.14 subinterpreter APIs#8605
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youknowone commented Aug 28, 2026

Summary

CPython compatibility review

Validation

AI assistance

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github-actions Bot commented Aug 28, 2026

📦 Library Dependencies

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