Improve stdlib module initialization error handling.

@Yhg1s

BPO	38823
Nosy	@Yhg1s, @vstinner, @asvetlov, @serhiy-storchaka, @miss-islington, @brandtbucher, @shihai1991, @erlend-aasland
PRs	bpo-38823: Clean up refleaks in _asyncio initialization. #17195 [3.8] bpo-38823: Clean up refleaks in _asyncio initialization. (GH-17195) #17196 [3.7] bpo-38823: Clean up refleaks in _asyncio initialization. (GH-17195) #17197 bpo-38823: Clean up refleaks in _contextvars initialization. #17198 [3.7] bpo-38823: Clean up refleaks in _contextvars initialization. (GH-17198) #17199 [3.8] bpo-38823: Clean up refleaks in _contextvars initialization. (GH-17198) #17200 bpo-38823: Clean up refleaks in _tkinter initialization. #17206 bpo-38823: Clean up _statistics initialization. #17215 bpo-38823: Clean up _xxtestfuzz initialization. #17216 [3.8] bpo-38823: Clean up refleaks in _tkinter initialization. (GH-17206) #17226 [3.7] bpo-38823: Clean up refleaks in _tkinter initialization. (GH-17206) #17227 bpo-38823: Clean up refleak in _tracemalloc initialization. #17235 bpo-38823: Clean up refleak in fcntl initialization. #17236 bpo-38823: Clean up refleaks in faulthandler initialization. #17250 bpo-38823: Clean up refleak in marshal initialization. #17260 [3.8] bpo-38823: Fix refleaks in faulthandler init error path on Windows (GH-17250) #17263 [3.7] bpo-38823: Fix refleaks in faulthandler init error path on Windows (GH-17250) #17264 [3.8] bpo-38823: Fix refleak in marshal init error path (GH-17260) #17271 [3.7] bpo-38823: Fix refleak in marshal init error path (GH-17260) #17272 bpo-38823: Clean up refleaks in _ast initialization. #17276 [3.8] bpo-38823: Fix refleak in marshal init error path (GH-17260) #17280 [3.7] bpo-38823: Fix refleak in marshal init error path (GH-17260) #17281 [3.8] bpo-38823: Fix refleak in _tracemalloc init error handling (GH-17235) #17282 [3.7] bpo-38823: Fix refleak in _tracemalloc init error handling (GH-17235) #17283 bpo-38823: Add a private _PyModule_StealObject API. #17298 bpo-1635741: Calling Py_INCREF() after PyModule_AddObject() success to run #18365 bpo-38823: Fix refleaks in _ctypes extension init #23247 bpo-38823: Always build _ctypes with wchar_t #23248 bpo-38823: Fix compiler warning in _ctypes on Windows #23258

^{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 = 'https://github.com/brandtbucher' closed_at = None created_at = <Date 2019-11-16.18:54:25.878> labels = ['3.7', '3.8', 'type-bug', 'library', '3.9'] title = 'Improve stdlib module initialization error handling.' updated_at = <Date 2020-11-13.13:44:17.121> user = 'https://github.com/brandtbucher'

bugs.python.org fields:

activity = <Date 2020-11-13.13:44:17.121> actor = 'vstinner' assignee = 'brandtbucher' closed = False closed_date = None closer = None components = ['Library (Lib)'] creation = <Date 2019-11-16.18:54:25.878> creator = 'brandtbucher' dependencies = [] files = [] hgrepos = [] issue_num = 38823 keywords = ['patch'] message_count = 30.0 messages = ['356764', '356765', '356773', '356774', '356775', '356781', '356782', '356783', '356809', '356820', '356872', '356873', '356874', '356984', '357002', '357003', '357004', '357014', '357019', '357029', '357044', '357046', '357047', '357050', '357051', '357114', '361486', '380822', '380824', '380883'] nosy_count = 8.0 nosy_names = ['twouters', 'vstinner', 'asvetlov', 'serhiy.storchaka', 'miss-islington', 'brandtbucher', 'shihai1991', 'erlendaasland'] pr_nums = ['17195', '17196', '17197', '17198', '17199', '17200', '17206', '17215', '17216', '17226', '17227', '17235', '17236', '17250', '17260', '17263', '17264', '17271', '17272', '17276', '17280', '17281', '17282', '17283', '17298', '18365', '23247', '23248', '23258'] priority = 'normal' resolution = None stage = 'patch review' status = 'open' superseder = None type = 'behavior' url = 'https://bugs.python.org/issue38823' versions = ['Python 3.7', 'Python 3.8', 'Python 3.9']