Py_Finalize() doesn't clear all Python objects at exit

@amauryfa

BPO	1635741
Nosy	@amauryfa, @orsenthil, @vstinner, @tiran, @phsilva, @encukou, @ambv, @ericsnowcurrently, @serhiy-storchaka, @phmc, @DimitrisJim, @corona10, @miss-islington, @shihai1991, @erlend-aasland, @koubaa, @h-vetinari, @csabesz88, @kumaraditya303, @CharlieZhao95
PRs	bpo-1635741: Port _json extension module to multiphase initialization(PEP 489) #17835 bpo-1635741: Remove redundant _Py_INC_TPALLOCS in _Py_NewReference() #17883 bpo-1635741: Port _abc extension module to multiphase initialization(PEP 489) #18030 bpo-1635741: Port _asyncio extension module to multiphase initialization(PEP 489) #18032 bpo-1635741: Port _bisect extension module to multiphase initialization(PEP 489) #18049 bpo-1635741: Port _bz2 extension module to multiphase initialization(PEP 489) #18050 bpo-1635741: Port _codecs extension module to multiphase initialization (PEP 489) #18065 bpo-1635741: Port _collections extension module to multiphase initialization(PEP 489) #18066 bpo-1635741: Port _locale extension module to multiphase initialization (PEP 489) #18358 bpo-1635741: Calling Py_INCREF() after PyModule_AddObject() success to run #18365 bpo-1635741: Port _contextvars extension module to multiphase initialization (PEP … #18374 bpo-1635741: Port _crypt extension module to multiphase initialization(PEP 489) #18404 bpo-1635741: Fix refleaks of timemoudle in PyInit_time() #18486 bpo-1635741: Port audioop extension module to multiphase initialization(PEP 489) #18608 bpo-1635741: Fix potential refleaks in binascii module #18613 bpo-1635741: Port _ctypes_test extension module to multiphase initialization(PEP … #19012 bpo-1635741: Port statistics module to multiphase initialization #19015 bpo-1635741: Fix possible refleaks in tupleobject.c #19018 [3.7] bpo-1635741: Fix a possible refleak in tupleobject.c (GH-19018) #19022 [3.8] bpo-1635741: Fix a possible refleak in tupleobject.c (GH-19018) #19021 bpo-1635741: Port itertools module to multiphase initialization. #19044 bpo-1635741: Port _heapq module to multiphase initialization. #19057 bpo-39337: Add a test case for normalizing of codec names #19069 [WIP] bpo-1635741: Port _collections module to multiphase initialization. #19071 bpo-1635741: Port _collections module to multiphase initialization. #19074 bpo-1635741: Port _weakref extension module to multiphase initialization(PEP 489) #19084 bpo-1635741: Enhance get_binascii_state() #19100 bpo-1635741: Port time module to multiphase initialization (PEP 489) #19107 bpo-1635741: Port _datetime module to multiphase initialization (PEP 489) #19122 Revert "bpo-1635741: Port _weakref extension module to multiphase initialization (PEP 489) (GH-19084)" #19128 bpo-40050: Fix importlib._bootstrap_external #19135 bpo-1635741: Port _weakref extension module to multiphase initialization (PEP 489) (GH-19084) #19140 bpo-1635741: Port operator module to multiphase initialization (PEP 489) #19150 bpo-1635741: Port _functools module to multiphase initialization (PEP-489) #19151 bpo-1635741: Port _uuid module to multiphase initialization. #19242 bpo-1635741: Port math module to multiphase initialization #19243 bpo-1635741: Port resource extension module to multiphase initialization(PEP 489) #19252 bpo-1635741: Enhance PyModule_AddIntMacro by ADD_INT macro #19307 bpo-1635741: Port _lzma module to multiphase initialization #19382 bpo-1635741: Port mmap module to multiphase initialization #19459 bpo-1635741: Port _stat module to multiphase initialization #19798 bpo-1635741: Fix compiler warning in _stat.c #19822 bpo-1635741: Port syslog module to multiphase initialization #19907 bpo-1635741: Port errno module to multiphase initialization #19923 bpo-1635741: Port fcntl module to multiphase initialization #20540 [WIP] bpo-1635741: Py_Finalize() finalizes builtin static types #20763 bpo-1635741: Port nis module to multiphase initialization. #20808 bpo-1635741: Port _dbm module to multiphase initialization #20848 bpo-1635741: Port _gdbm module to multiphase initialization #20920 bpo-1635741: Enable unicode_release_interned() without insure or valgrind. #21087 bpo-1635741: Port termios module to multiphase initialization #21168 bpo-1635741: Port sha256 module to multiphase init (PEP 489) #21189 bpo-1635741: Release Unicode interned strings at exit #21269 bpo-1635741: Fix unicode_dealloc() for mortal interned string #21270 bpo-1635741: Port faulthandler module to multiphase initialization #21294 bpo-1635741 - try to port pickle to multi-stage init #21319 bpo-1635741: port winapi to multi-stage init #21371 bpo-1635741 unicodedata #21375 bpo-1635741: port multiprocessing to multiphase init #21378 bpo-1635741: prepare for multi-phase init for unicodedata #21418 bpo-1635741: Clean sysdict and builtins of interpreter #21605 bpo-1635741: Port hashlib modules to multiphase init (PEP 489) #21818 bpo-1635741: port sha3 module to multi-phase init #21855 bpo-1635741: port blake2 module to multi-phase init #21856 bpo-1635741: Fix refleaks of encodings module by removing the encodings._aliases #21896 bpo-1635741: Fix reference cycle by calling explicit gc collection in main interpreter #21902 bpo-1635741 port some simple modules to multi-phase initialization #21985 bpo-1635741 port _curses_panel to multi-phase init (PEP 489) #21986 bpo-1635741 port zlib module to multi-phase init #21995 bpo-1635741 port _testbuffer to multi-phase init #22003 bpo-1635741 port signalmodule to multi-phase init (PEP 489) #22049 bpo-1635741: port opcode module to multi-phase init (PEP 489) #22050 bpo-1635741: - port overlapped to multi-phase #22051 bpo-1635741: testbuffer heap types #22131 bpo-1635741: sha256 heap types #22134 bpo-1635741: Port the termios to multi-phase init (PEP 489) #22139 bpo-1635741 - port unicodedata to multi-phase init #22145 bpo-1635741: Port _string module to multi-phase init #22148 bpo-1635741: Port mashal module to multi-phase init #22149 bpo-1635741: port scproxy to multi-phase init #22164 bpo-1635741 port cmath to multi-phase init (pep 489) #22165 bpo-1635741 port _lsprof to multi-phase init (PEP 489) #22220 bpo-1635741: port pyexpat to multi-phase init (PEP 489) #22222 bpo-1635741: convert an _lsprof method to argument clinic #22240 bpo-41790: update error in documentation #22242 bpo-1635741: replace UCD_Check with Py_IS_TYPE #22328 bpo-1635741: Port _bisect module to multi-phase init #22415 bpo-41861: Convert _sqlite3 CursorType and ConnectionType to heap types #22478 bpo-1635741: pyexpat error handling #22489 bpo-1635741: convert unicode ucd type to heap type #22490 bpo-1635741: Add a global module state to unicodedata #22712 bpo-1635741: Move _PyUnicode_Name_CAPI to the internal C API #22713 bpo-1635741: Port _csv to multi-phase init #22838 bpo-1635741: Fix NULL ptr deref in multiprocessing #22880 gh-103092: Prep curses module for multi-phase init #23091 bpo-1635741: Add PyModule_AddObjectRef() function #23122 bpo-1635741: _ast uses PyModule_AddObjectRef() #23146 bpo-1635741: _contextvars uses PyModule_AddType() #23147 bpo-1635741: _sqlite3 uses PyModule_AddObjectRef #23148 bpo-1635741: _warnings uses PyModule_AddObjectRef() #23151 bpo-1635741: sqlite3 now uses Py_NewRef and Py_XNewRef #23170 bpo-1635741: Enhance _datetime error handling #23139 bpo-1635741: port pickle to multi-phase init (PEP 489) #23188 bpo-1635741: Fix typo in PyModule_AddObjectRef() doc #23234 bpo-40170: Fix PyType_Ready() refleak on static type #23236 bpo-1635741: In pickle module, inject module state from class methods #23304 bpo-1635741: Port _hashlib to multiphase initialization (GH-23358) #23358 bpo-1635741: Port _random to multiphase initialization #23359 bpo-1635741: Port grp and pwd to multiphase initialization #23360 bpo-1635741: Port symtable module to multiphase initialization #23361 bpo-1635741: Port _queue to multiphase initialization #23376 bpo-1635741: Port gc module to multiphase initialization #23377 bpo-1635741: Convert _imp to multi-phase init #23378 bpo-1635741: Port _warnings to the multi-phase init #23379 bpo-1635741: Port _random to the multi-phase init #23381 bpo-1635741: Port spwd to multiphase initialization (GH-23390) #23390 bpo-1635741: Convert _sre types to heap types and establish module state (PEP 384) #23393 bpo-1635741: Port _struct to multiphase initialization #23398 Revert "bpo-1635741: Port _struct to multiphase initialization" #23401 bpo-1635741: Fix _struct for build bot error #23402 bpo-1635741: Port _posixshmem extension module to multiphase initialization #23404 bpo-1635741: Port _posixsubprocess module to multiphase init (GH-23406) #23406 bpo-1635741: Port select module to multiphase init (GH-23409) #23409 bpo-1635741: Port resource extension module to module state (GH-23462) #23462 bpo-42327: Add PyModule_Add() (smaller). #23443 bpo-42327: Add PyModule_Add() (smaller). #23443 bpo-1635741: port _elementtree to multi-phase init (PEP 489) #23535 Add symbols of the stable ABI to python3dll.c #23598 bpo-1635741: Refactor _threadmodule.c #23793 bpo-1635741: Port _thread to multiphase init #23811 bpo-1635741: Fix ref. leak introduced by bf64d90 #23972 bpo-1635741: Adapt _multibytecodec to multi-phase initialization #24095 bpo-1635741: Convert socket.SocketType to heap type, and establish global state #24175 bpo-1635741: Fix PyModule_AddObjectRef to use EXPORT_FUNC #24205 bpo-1635741: Port _datetime extension module to multiphase initialization (PEP 489) #30522 bpo-1635741: port _ctypes extension module to multiphase initialization #30525 bpo-46417: Call _PyDebug_PrintTotalRefs() later #30744 bpo-1635741: test_embed cheks that Python does not leak #31555 bpo-1635741: Fix winreg reference leaks #31560

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2022-01-27.13:42:43.202>
created_at = <Date 2007-01-15.10:26:05.000>
labels = ['expert-subinterpreters', 'interpreter-core', '3.11', 'performance']
title = "Py_Finalize() doesn't clear all Python objects at exit"
updated_at = <Date 2022-02-25.11:34:18.230>
user = 'https://bugs.python.org/kylotan'

bugs.python.org fields:

activity = <Date 2022-02-25.11:34:18.230>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2022-01-27.13:42:43.202>
closer = 'vstinner'
components = ['Interpreter Core', 'Subinterpreters']
creation = <Date 2007-01-15.10:26:05.000>
creator = 'kylotan'
dependencies = []
files = []
hgrepos = []
issue_num = 1635741
keywords = ['patch']
message_count = 185.0
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nosy_count = 26.0
nosy_names = ['amaury.forgeotdarc', 'orsenthil', 'kylotan', 'vstinner', 'christian.heimes', 'tlesher', 'phsilva', 'petr.viktorin', 'ysj.ray', 'santoso.wijaya', 'lukasz.langa', 'python-dev', 'eric.snow', 'serhiy.storchaka', 'pconnell', 'isoschiz', 'Jim Fasarakis-Hilliard', 'corona10', 'miss-islington', 'shihai1991', 'erlendaasland', 'koubaa', 'h-vetinari', 'TCsaba', 'kumaraditya', 'CharlieZhao']
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priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'resource usage'
url = 'https://bugs.python.org/issue1635741'
versions = ['Python 3.11']

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Py_Finalize() doesn't clear all Python objects at exit #44470

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Py_Finalize() doesn't clear all Python objects at exit #44470

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