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Guido van Rossum 602630ac18
bpo-46752: Add TaskGroup; add Task..cancelled(),.uncancel() (GH-31270) 
asyncio/taskgroups.py is an adaptation of taskgroup.py from EdgeDb, with the following key changes:

- Allow creating new tasks as long as the last task hasn't finished
- Raise [Base]ExceptionGroup (directly) rather than TaskGroupError deriving from MultiError
- Instead of monkey-patching the parent task's cancel() method,
  add a new public API to Task

The Task class has a new internal flag, `_cancel_requested`, which is set when `.cancel()` is called successfully. The `.cancelling()` method returns the value of this flag. Further `.cancel()` calls while this flag is set return False. To reset this flag, call `.uncancel()`.

Thus, a Task that catches and ignores `CancelledError` should call `.uncancel()` if it wants to be cancellable again; until it does so, it is deemed to be busy with uninterruptible cleanup.

This new Task API helps solve the problem where TaskGroup needs to distinguish between whether the parent task being cancelled "from the outside" vs. "from inside".

Co-authored-by: Yury Selivanov <yury@edgedb.com>
Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com>
2022-02-15 15:42:04 -08:00
..
_blake2 bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
_ctypes bpo-46323: Fix double-free issue for borrowed refs (GH-31272) 2022-02-11 17:48:47 +09:00
_decimal bpo-46361: Fix "small" int caching (GH-30583) 2022-01-16 16:06:37 +00:00
_io bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_multiprocessing bpo-45847: Fix _multiprocessing on platforms without sem_open (GH-29833) 2021-11-29 10:36:10 +01:00
_sha3 bpo-46670: Fix #ifdef in sha3module.c (GH-31180) 2022-02-07 16:22:24 +01:00
_sqlite bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_ssl bpo-43908: Mark ssl, hash, and hmac types as immutable (GH-25792) 2021-05-02 09:47:45 +02:00
_xxtestfuzz bpo-29505: Add fuzzer for ast.literal_eval (GH-28777) 2021-10-06 16:22:09 -07:00
cjkcodecs bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
clinic bpo-46752: Add TaskGroup; add Task..cancelled(),.uncancel() (GH-31270) 2022-02-15 15:42:04 -08:00
expat bpo-46400: Update libexpat from 2.4.1 to 2.4.4 (GH-31022) 2022-02-13 00:29:41 +09:00
_abc.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_asynciomodule.c bpo-46752: Add TaskGroup; add Task..cancelled(),.uncancel() (GH-31270) 2022-02-15 15:42:04 -08:00
_bisectmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_bz2module.c bpo-43908: Make heap types converted during 3.10 alpha immutable (GH-26351) 2021-06-17 11:06:09 +01:00
_codecsmodule.c bpo-45467: Fix IncrementalDecoder and StreamReader in the "raw-unicode-escape" codec (GH-28944) 2021-10-14 20:04:19 +03:00
_collectionsmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_contextvarsmodule.c bpo-1635741: _contextvars uses PyModule_AddType() (GH-23147) 2020-11-04 16:33:55 +01:00
_cryptmodule.c closes bpo-44751: Move crypt.h include from public header to _cryptmodule (GH-27394) 2021-07-27 15:58:12 -07:00
_csv.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_curses_panel.c bpo-43916: Add Py_TPFLAGS_DISALLOW_INSTANTIATION type flag (GH-25721) 2021-04-30 12:46:15 +02:00
_cursesmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_datetimemodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_dbmmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_elementtree.c bpo-45948: Remove constructor discrepancy in C version of ElementTree.XMLParser (GH-31152) 2022-02-12 10:27:02 +02:00
_functoolsmodule.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_gdbmmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_hashopenssl.c bpo-40479: Fix undefined behavior in Modules/_hashopenssl.c (GH-31153) 2022-02-06 23:40:54 -08:00
_heapqmodule.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
_json.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_localemodule.c bpo-42519: Replace PyMem_MALLOC() with PyMem_Malloc() (GH-23586) 2020-12-01 09:56:42 +01:00
_lsprof.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
_lzmamodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_math.h bpo-45548: Remove _math.c workarounds for pre-C99 libm (GH-29179) 2021-10-25 01:25:27 -07:00
_opcode.c bpo-46072: Add --with-pystats configure option to simplify gathering of VM stats (GH-30116) 2021-12-15 15:32:32 +00:00
_operator.c bpo-44953: Add vectorcall for itemgetter and attrgetter instances (GH-27828) 2022-02-10 16:57:47 -05:00
_pickle.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_posixsubprocess.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
_queuemodule.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_randommodule.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_scproxy.c bpo-1635741: port scproxy to multi-phase init (GH-22164) 2020-09-09 12:28:48 +09:00
_sre.c Fix typos in the Modules directory (GH-28761) 2021-10-07 01:34:42 -07:00
_ssl.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_ssl.h bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_ssl_data.h closes bpo-40266, closes bpo-39953: Use numeric lib code if compiling against old OpenSSL. (GH-19506) 2020-04-13 22:11:40 -05:00
_ssl_data_111.h bpo-43788: Generate version specific _ssl_data.h (GH-25300) 2021-04-09 08:02:00 -07:00
_ssl_data_300.h bpo-43788: Generate version specific _ssl_data.h (GH-25300) 2021-04-09 08:02:00 -07:00
_stat.c bpo-40677: Define IO_REPARSE_TAG_APPEXECLINK explicitly (GH-20206) 2020-05-19 13:22:16 +01:00
_statisticsmodule.c bpo-40268: Remove unused structmember.h includes (GH-19530) 2020-04-15 02:35:41 +02:00
_struct.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_testbuffer.c bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587) 2020-12-01 10:37:39 +01:00
_testcapimodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
_testimportmultiple.c Remove compile warnings for _testimportmodule 2012-12-15 18:16:47 +02:00
_testinternalcapi.c bpo-29882: Fix portability bug introduced in GH-30774 (#30794) 2022-01-23 09:59:34 +00:00
_testmultiphase.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_threadmodule.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
_tkinter.c bpo-46670: Remove unused macros in the Modules directory (GH-31194) 2022-02-07 16:21:31 +01:00
_tracemalloc.c bpo-46280: Fix tracemalloc_copy_domain() (GH-30591) 2022-01-14 05:11:38 +01:00
_typingmodule.c bpo-44353: Implement typing.NewType __call__ method in C (#27262) 2021-07-22 23:06:54 +02:00
_uuidmodule.c bpo-45847: Port _uuid to PY_STDLIB_MOD (GH-29741) 2021-11-24 10:20:37 +01:00
_weakref.c bpo-40170: PyType_SUPPORTS_WEAKREFS() becomes a regular function (GH-30938) 2022-01-27 03:00:55 +01:00
_winapi.c Update URLs in comments and metadata to use HTTPS (GH-27458) 2021-07-30 15:54:46 +02:00
_xxsubinterpretersmodule.c bpo-45637: Store the frame pointer in the cframe (GH-29267) 2021-10-28 13:59:11 +01:00
_zoneinfo.c bpo-46383: Fix signature of zoneinfo module_free function (GH-30607) 2022-01-15 09:52:19 +01:00
addrinfo.h replace PY_LONG_LONG with long long 2016-09-06 10:46:49 -07:00
arraymodule.c bpo-46613: Add PyType_GetModuleByDef to the public API (GH-31081) 2022-02-11 17:22:11 +01:00
atexitmodule.c bpo-46025: Fix a crash in the atexit module for auto-unregistering functions (GH-30002) 2021-12-09 13:53:44 +00:00
audioop.c bpo-46670: Test if a macro is defined, not its value (GH-31178) 2022-02-07 01:46:51 +01:00
binascii.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
cmathmodule.c bpo-45548: Remove _math.c workarounds for pre-C99 libm (GH-29179) 2021-10-25 01:25:27 -07:00
config.c.in Add tests for the C tokenizer and expose it as a private module (GH-27924) 2021-08-24 17:50:05 +01:00
errnomodule.c bpo-42971: Add errno.EQFULL (macOS) (GH-24419) 2021-08-06 23:35:13 +02:00
faulthandler.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
fcntlmodule.c bpo-46016: fcntl module add FreeBSD's F_DUP2FD_CLOEXEC flag support (GH-29993) 2021-12-08 23:28:51 +01:00
gc_weakref.txt Fix typos in the Modules directory (GH-28761) 2021-10-07 01:34:42 -07:00
gcmodule.c bpo-40170: PyType_SUPPORTS_WEAKREFS() becomes a regular function (GH-30938) 2022-01-27 03:00:55 +01:00
getaddrinfo.c bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748) 2017-12-12 13:55:04 +02:00
getbuildinfo.c bpo-45532: Replace 'default' with 'main' as default in sys.version (GH-29100) 2021-10-21 02:09:03 +09:00
getnameinfo.c Issue #15538: Fix compilation of the getnameinfo() / getaddrinfo() emulation code. 2012-08-02 20:37:12 +02:00
getpath.c bpo-46362: Ensure ntpath.abspath() uses the Windows API correctly (GH-30571) 2022-01-13 23:35:42 +00:00
getpath.py bpo-46028: Calculate base_executable by resolving symlinks in a venv (GH-30144) 2022-01-18 15:46:26 +00:00
getpath_noop.c bpo-45582: Port getpath[p].c to Python (GH-29041) 2021-12-03 00:08:42 +00:00
grpmodule.c bpo-1635741: Port grp and pwd to multiphase initialization (GH-23360) 2020-11-18 23:47:32 -08:00
hashlib.h hashlib: Fix old message about unicode objects. (GH-28653) 2021-10-01 14:38:49 +02:00
itertoolsmodule.c bpo-46728: fix docstring of combinations_with_replacement for consistency (GH-31293) 2022-02-15 09:02:21 +09:00
ld_so_aix.in Issue #10656: Fix out-of-tree building on AIX 2016-11-20 07:56:37 +00:00
main.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
makesetup bpo-46023: Skip build if module is marked as DISABLED (GH-30100) 2021-12-14 15:42:46 +01:00
makexp_aix bpo-42087: Remove support for AIX 5.3 and below (GH-22830) 2020-11-16 16:16:10 +01:00
mathmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
md5module.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
mmapmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
nismodule.c bpo-45434: pyport.h no longer includes <stdlib.h> (GH-28914) 2021-10-13 19:25:53 +02:00
ossaudiodev.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
overlapped.c Remove Python 3.3 compatibility code from overlapped.c (GH-31049) 2022-02-02 10:16:36 +02:00
posixmodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
posixmodule.h bpo-41498: Fix build on platforms without sigset_t (GH-29770) 2021-11-25 12:28:41 +01:00
pwdmodule.c bpo-46670: Remove unused macros in the Modules directory (GH-31194) 2022-02-07 16:21:31 +01:00
pyexpat.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
readline.c bpo-45434: pyport.h no longer includes <stdlib.h> (GH-28914) 2021-10-13 19:25:53 +02:00
README Issue #18093: Factor out the programs that embed the runtime 2014-07-25 21:52:14 +10:00
resource.c bpo-40280: Address more test failures on Emscripten (GH-31050) 2022-02-05 20:52:01 +01:00
rotatingtree.c
rotatingtree.h bpo-32150: Expand tabs to spaces in C files. (#4583) 2017-11-28 17:56:10 +02:00
selectmodule.c bpo-41857: mention timeout argument units in select.poll() and select.depoll() doc-strings (GH-22406) 2022-01-21 01:08:44 +02:00
Setup bpo-45847: Port _scproxy to PY_STDLIB_MOD (GH-29644) 2021-11-20 10:18:48 +01:00
Setup.bootstrap bpo-46023: Skip build if module is marked as DISABLED (GH-30100) 2021-12-14 15:42:46 +01:00
Setup.stdlib.in bpo-40280: Allow to compile _testcapi as builtin module (GH-30559) 2022-01-12 20:27:37 +01:00
sha1module.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
sha256module.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
sha512module.c bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157) 2021-10-22 15:36:28 +02:00
signalmodule.c bpo-46417: signal: move siginfo_type to the module state (GH-30964) 2022-01-27 21:21:50 +01:00
socketmodule.c closes bpo-46626: Expose IP_BIND_ADDRESS_NO_PORT socket option. (GH-31106) 2022-02-03 10:46:50 -08:00
socketmodule.h bpo-30512: Add CAN Socket support for NetBSD (GH-30066) 2022-01-21 09:44:05 +02:00
spwdmodule.c bpo-1635741: Port spwd to multiphase initialization (GH-23390) 2020-11-19 10:54:03 +01:00
sre.h bpo-39943: Add the const qualifier to pointers on non-mutable PyUnicode data. (GH-19345) 2020-04-11 10:48:40 +03:00
sre_constants.h bpo-31690: Allow the inline flags "a", "L", and "u" to be used as group flags for RE. (#3885) 2017-10-24 23:31:42 +03:00
sre_lib.h bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587) 2020-12-01 10:37:39 +01:00
symtablemodule.c bpo-42725: Render annotations effectless on symbol table with PEP 563 (GH-25583) 2021-05-03 10:43:00 +03:00
syslogmodule.c Fix typos in the Modules directory (GH-28761) 2021-10-07 01:34:42 -07:00
termios.c Remove trailing spaces. (GH-28706) 2021-10-03 16:58:14 +03:00
testcapi_long.h Issue #9530: Fix undefined behaviour due to signed overflow in testcapi_long.h. 2011-11-19 17:58:15 +00:00
timemodule.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
tkappinit.c Issue #4350: Removed a number of out-of-dated and non-working for a long time 2014-07-23 22:33:50 +03:00
tkinter.h Issue #16840. Turn off bignum support in tkinter with with Tcl earlier than 8.5.8 2015-04-22 10:59:32 +03:00
unicodedata.c bpo-46541: Replace core use of _Py_IDENTIFIER() with statically initialized global objects. (gh-30928) 2022-02-08 13:39:07 -07:00
unicodedata_db.h closes bpo-45190: Update Unicode data to version 14.0.0. (GH-28336) 2021-09-14 11:00:38 -07:00
unicodename_db.h closes bpo-45190: Update Unicode data to version 14.0.0. (GH-28336) 2021-09-14 11:00:38 -07:00
winreparse.h bpo-31512: Add non-elevated symlink support for Windows (GH-3652) 2019-04-09 11:19:46 -07:00
xxlimited.c bpo-45459: Add Py_buffer to limited API (GH-29991) 2022-02-02 07:03:10 -08:00
xxlimited_35.c bpo-42972: Fully implement GC protocol for xxlimited (GH-26451) 2021-05-31 09:51:19 +02:00
xxmodule.c bpo-42519: Replace PyObject_MALLOC() with PyObject_Malloc() (GH-23587) 2020-12-01 10:37:39 +01:00
xxsubtype.c bpo-46315: Add ifdef HAVE_ feature checks for WASI compatibility (GH-30507) 2022-01-13 09:46:04 +01:00
zlibmodule.c bpo-41735: Fix thread lock in zlib.Decompress.flush() may go wrong (GH-29587) 2021-11-26 16:18:17 -08:00

README 

Source files for standard library extension modules,
and former extension modules that are now builtin modules.