Mailman 3 May 2020 - Python-Dev

Summary of Python tracker Issues
by Python tracker 22 May '20

22 May '20

ACTIVITY SUMMARY (2020-05-15 - 2020-05-22) Python tracker at https://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 7478 (+10) closed 45000 (+83) total 52478 (+93) Open issues with patches: 3006 Issues opened (66) ================== #26317: _scproxy and Python Launcher fail to build wtih GNU gcc on mac https://bugs.python.org/issue26317 reopened by vstinner #38815: test_ssl: test_min_max_version() fails on FreeBSD and Fedora https://bugs.python.org/issue38815 reopened by christian.heimes #40217: The garbage collector doesn't take in account that objects of https://bugs.python.org/issue40217 reopened by pablogsal #40452: Tkinter/IDLE: preserve clipboard on closure https://bugs.python.org/issue40452 reopened by taleinat #40636: Provide a strict form of zip (PEP-618) requiring same length i https://bugs.python.org/issue40636 opened by gregory.p.smith #40638: input() with malformed input stream triggers assertion failure https://bugs.python.org/issue40638 opened by tekknolagi #40640: Tutorial for Continue missing ... line https://bugs.python.org/issue40640 opened by docorbit(a)sonic.net #40642: Cpython "pystate.h" subdirectory wrong https://bugs.python.org/issue40642 opened by jpelizza #40643: Improve doc-strings for datetime.strftime & strptime https://bugs.python.org/issue40643 opened by edison.abahurire #40644: Text representation of Windows' file attributes similar to sta https://bugs.python.org/issue40644 opened by scrool #40645: Use OpenSSL's HMAC API https://bugs.python.org/issue40645 opened by christian.heimes #40646: Builtins in doc show signature in documentation https://bugs.python.org/issue40646 opened by cryvate #40647: Building with a libreadline.so located outside the ld.so.conf https://bugs.python.org/issue40647 opened by mjpieters #40648: File mode is not tested on Windows https://bugs.python.org/issue40648 opened by scrool #40652: Test test_locale failed when running cpython test on Windows 1 https://bugs.python.org/issue40652 opened by kpysoze #40654: shutil.copyfile mutates symlink for absolute path https://bugs.python.org/issue40654 opened by jaraco #40656: Clean up detect_socket() in setup.py https://bugs.python.org/issue40656 opened by erlendaasland #40657: Resource leaks with threading.Thread https://bugs.python.org/issue40657 opened by POCEH #40663: Wrong generated annotation on subscripting https://bugs.python.org/issue40663 opened by BTaskaya #40666: TarFile.add does not support pathlib.Path as a value to first https://bugs.python.org/issue40666 opened by socketpair #40667: [Windows] Add global python and python3 commands https://bugs.python.org/issue40667 opened by steve.dower #40668: Catastrophic loss of precision in colorsys module https://bugs.python.org/issue40668 opened by Zac Hatfield-Dodds #40670: supplying an empty string to timeit causes an IndentationError https://bugs.python.org/issue40670 opened by edison.abahurire #40671: Convert _hashlib to PEP 489 multiphase initialization https://bugs.python.org/issue40671 opened by vstinner #40672: asyncio.wait_for: process future result produced during cancel https://bugs.python.org/issue40672 opened by Roman Skurikhin #40673: urllib.request.URLopener raises different exceptions based on https://bugs.python.org/issue40673 opened by Petter S #40674: Deprecate urllib.request.urlretrieve() and cleanup() https://bugs.python.org/issue40674 opened by remi.lapeyre #40675: Add missing mimetypes for fonts https://bugs.python.org/issue40675 opened by sahil.prajapati #40676: Use Argument Clinic for csv https://bugs.python.org/issue40676 opened by hauntsaninja #40678: Full list of Python lexical rules https://bugs.python.org/issue40678 opened by cool-RR #40679: show class name in method invocation TypeError https://bugs.python.org/issue40679 opened by chris.jerdonek #40680: thread_cputime isn't supported by AIX5 https://bugs.python.org/issue40680 opened by Michael.Felt #40684: make install doesn't respect configure --with-platlibdir=lib64 https://bugs.python.org/issue40684 opened by vstinner #40685: IDLE: Document info needed for 'not working' reports. https://bugs.python.org/issue40685 opened by Coder436 #40686: Compiler warnings in _zoneinfo.c on Windows build in 64-bit https://bugs.python.org/issue40686 opened by vstinner #40687: Windows py.exe launcher interacts badly with Windows store pyt https://bugs.python.org/issue40687 opened by benspiller #40688: PEG Generator: Fix scripts to always use the correct parser https://bugs.python.org/issue40688 opened by lys.nikolaou #40689: The only supported minidom attribute iteration (NamedNodeMap) https://bugs.python.org/issue40689 opened by nthykier #40690: unittest: if FunctionTestCase is imported, the loader loads "t https://bugs.python.org/issue40690 opened by pwtail #40691: misleading output from difflib unified_diff https://bugs.python.org/issue40691 opened by cdanis #40692: Adjust test_concurrent_futures to run more of its tests if mul https://bugs.python.org/issue40692 opened by asheesh #40694: gen.throw() with multiple yield froms skips intermediate excep https://bugs.python.org/issue40694 opened by chris.jerdonek #40695: hashlib: OpenSSL hash detection should obey security policy https://bugs.python.org/issue40695 opened by christian.heimes #40696: Exception handling with "await" can hang in Python3.9.0b1 https://bugs.python.org/issue40696 opened by felixxm #40697: add fissix as a lib2to3 alternative https://bugs.python.org/issue40697 opened by graingert #40699: Memory leak in threading library with Python 3.6-3.8 https://bugs.python.org/issue40699 opened by Cristian Martinez de Morentin #40700: Make WSGIRequestHandler easier to be customized by the user https://bugs.python.org/issue40700 opened by Manjusaka #40701: tempfile mixes str and bytes in an inconsistent manner https://bugs.python.org/issue40701 opened by ericzolf #40703: PyType_FromSpec*() overwrites the type's "__module__" https://bugs.python.org/issue40703 opened by scoder #40704: PyIter_Check fails when compiling in the Limited API https://bugs.python.org/issue40704 opened by tekknolagi #40705: use-after-free in _zoneinfo.c's module_free function https://bugs.python.org/issue40705 opened by ammar2 #40706: Unreachable code in _PyEval_EvalCode https://bugs.python.org/issue40706 opened by Dennis Sweeney #40707: Popen.communicate documentation does not say how to get the re https://bugs.python.org/issue40707 opened by gdr(a)garethrees.org #40717: pl.python.org has expired cert and links to nonexistent django https://bugs.python.org/issue40717 opened by hanno #40718: Support out-of-band pickling for builtin types https://bugs.python.org/issue40718 opened by jakirkham #40719: Add pt-br to the language switcher at the Python 3.6 and 2.7 d https://bugs.python.org/issue40719 opened by rffontenelle #40720: accessing mmap of file that is overwritten causes bus error https://bugs.python.org/issue40720 opened by mhvk #40721: PEP0435 (enums) -- there is no standard on enum item letters c https://bugs.python.org/issue40721 opened by socketpair #40722: test_ttk_guionly times out on Ubuntu CI https://bugs.python.org/issue40722 opened by Dennis Sweeney #40723: IDLE: make autocomplete test run without __main__.__file__ https://bugs.python.org/issue40723 opened by terry.reedy #40724: Support buffer protocol with type specs https://bugs.python.org/issue40724 opened by scoder #40726: ast.Call end_lineno is defined and returns None https://bugs.python.org/issue40726 opened by gaborbernat #40727: SSLContext.load_verify_locations leaks memory on Linux in asyn https://bugs.python.org/issue40727 opened by Recursing #40729: Update the list of auto-generated files in .gitattributes https://bugs.python.org/issue40729 opened by BTaskaya #40730: Odd sentence in 3.9 What's New https://bugs.python.org/issue40730 opened by eric.smith #40731: CWI url's protocol on LICENSE file from http to https https://bugs.python.org/issue40731 opened by bastosvinicius Most recent 15 issues with no replies (15) ========================================== #40729: Update the list of auto-generated files in .gitattributes https://bugs.python.org/issue40729 #40724: Support buffer protocol with type specs https://bugs.python.org/issue40724 #40722: test_ttk_guionly times out on Ubuntu CI https://bugs.python.org/issue40722 #40720: accessing mmap of file that is overwritten causes bus error https://bugs.python.org/issue40720 #40719: Add pt-br to the language switcher at the Python 3.6 and 2.7 d https://bugs.python.org/issue40719 #40718: Support out-of-band pickling for builtin types https://bugs.python.org/issue40718 #40707: Popen.communicate documentation does not say how to get the re https://bugs.python.org/issue40707 #40706: Unreachable code in _PyEval_EvalCode https://bugs.python.org/issue40706 #40703: PyType_FromSpec*() overwrites the type's "__module__" https://bugs.python.org/issue40703 #40700: Make WSGIRequestHandler easier to be customized by the user https://bugs.python.org/issue40700 #40699: Memory leak in threading library with Python 3.6-3.8 https://bugs.python.org/issue40699 #40695: hashlib: OpenSSL hash detection should obey security policy https://bugs.python.org/issue40695 #40694: gen.throw() with multiple yield froms skips intermediate excep https://bugs.python.org/issue40694 #40692: Adjust test_concurrent_futures to run more of its tests if mul https://bugs.python.org/issue40692 #40691: misleading output from difflib unified_diff https://bugs.python.org/issue40691 Most recent 15 issues waiting for review (15) ============================================= #40731: CWI url's protocol on LICENSE file from http to https https://bugs.python.org/issue40731 #40730: Odd sentence in 3.9 What's New https://bugs.python.org/issue40730 #40729: Update the list of auto-generated files in .gitattributes https://bugs.python.org/issue40729 #40726: ast.Call end_lineno is defined and returns None https://bugs.python.org/issue40726 #40723: IDLE: make autocomplete test run without __main__.__file__ https://bugs.python.org/issue40723 #40719: Add pt-br to the language switcher at the Python 3.6 and 2.7 d https://bugs.python.org/issue40719 #40707: Popen.communicate documentation does not say how to get the re https://bugs.python.org/issue40707 #40705: use-after-free in _zoneinfo.c's module_free function https://bugs.python.org/issue40705 #40703: PyType_FromSpec*() overwrites the type's "__module__" https://bugs.python.org/issue40703 #40701: tempfile mixes str and bytes in an inconsistent manner https://bugs.python.org/issue40701 #40700: Make WSGIRequestHandler easier to be customized by the user https://bugs.python.org/issue40700 #40696: Exception handling with "await" can hang in Python3.9.0b1 https://bugs.python.org/issue40696 #40695: hashlib: OpenSSL hash detection should obey security policy https://bugs.python.org/issue40695 #40692: Adjust test_concurrent_futures to run more of its tests if mul https://bugs.python.org/issue40692 #40690: unittest: if FunctionTestCase is imported, the loader loads "t https://bugs.python.org/issue40690 Top 10 most discussed issues (10) ================================= #40452: Tkinter/IDLE: preserve clipboard on closure https://bugs.python.org/issue40452 22 msgs #40696: Exception handling with "await" can hang in Python3.9.0b1 https://bugs.python.org/issue40696 13 msgs #40679: show class name in method invocation TypeError https://bugs.python.org/issue40679 12 msgs #38870: Expose ast.unparse in the ast module https://bugs.python.org/issue38870 9 msgs #40654: shutil.copyfile mutates symlink for absolute path https://bugs.python.org/issue40654 9 msgs #26317: _scproxy and Python Launcher fail to build wtih GNU gcc on mac https://bugs.python.org/issue26317 8 msgs #38946: IDLE on macOS 10.15 Catalina does not open double-clicked file https://bugs.python.org/issue38946 8 msgs #40726: ast.Call end_lineno is defined and returns None https://bugs.python.org/issue40726 8 msgs #38938: Possible performance improvement for heaqq.merge() https://bugs.python.org/issue38938 7 msgs #39148: DatagramProtocol + IPv6 does not work with ProactorEventLoop https://bugs.python.org/issue39148 7 msgs Issues closed (82) ================== #4264: Patch: optimize code to use LIST_APPEND instead of calling lis https://bugs.python.org/issue4264 closed by rhettinger #13248: deprecated in 3.2/3.3, should be removed in 3.5 or ??? https://bugs.python.org/issue13248 closed by benjamin.peterson #22622: ElementTree only writes declaration when passed encoding https://bugs.python.org/issue22622 closed by scoder #24416: Have date.isocalendar() return a structseq instance https://bugs.python.org/issue24416 closed by p-ganssle #31033: Improve traceback of cancelled tasks / add cancel() msg argume https://bugs.python.org/issue31033 closed by chris.jerdonek #31131: asyncio.wait_for() TimeoutError doesn't provide full traceback https://bugs.python.org/issue31131 closed by chris.jerdonek #32309: Implement asyncio.run_in_executor shortcut https://bugs.python.org/issue32309 closed by aeros #32893: ast.literal_eval() shouldn't accept booleans as numbers in AST https://bugs.python.org/issue32893 closed by serhiy.storchaka #33797: json int encoding incorrect for dbus.Byte https://bugs.python.org/issue33797 closed by ned.deily #35569: Expose RFC 3542 IPv6 socket options on macOS https://bugs.python.org/issue35569 closed by ned.deily #35907: [security][CVE-2019-9948] Unnecessary URL scheme exists to all https://bugs.python.org/issue35907 closed by vstinner #37616: [3.10 prep] zip path incorrect https://bugs.python.org/issue37616 closed by Anthony Sottile #38544: test_venv: test_isolation() failed on AMD64 Windows7 SP1 3.x: https://bugs.python.org/issue38544 closed by vstinner #38798: test_asyncio.test_sendfile.test_sendfile_ssl_pre_and_post_data https://bugs.python.org/issue38798 closed by vstinner #39058: argparse should preserve argument ordering in Namespace https://bugs.python.org/issue39058 closed by rhettinger #39075: types.SimpleNamespace should preserve attribute ordering (?) https://bugs.python.org/issue39075 closed by eric.snow #39076: Use types.SimpleNamespace for argparse.Namespace https://bugs.python.org/issue39076 closed by rhettinger #39162: setup.py not picking up tkinter headers from non-system macOS https://bugs.python.org/issue39162 closed by ned.deily #39173: _AttributeHolder of argparse should support the sort function https://bugs.python.org/issue39173 closed by rhettinger #39305: Merge nntplib._NNTPBase and nntplib.NNTP https://bugs.python.org/issue39305 closed by corona10 #39631: Fix file association MIME type on Windows https://bugs.python.org/issue39631 closed by steve.dower #39705: Tutorial, 5.6 Looping Techniques, sorted() example https://bugs.python.org/issue39705 closed by rhettinger #39740: Select module fails to build on Solaris 11.4 https://bugs.python.org/issue39740 closed by BTaskaya #39976: Add "**other_popen_kwargs" to subprocess API signatures in doc https://bugs.python.org/issue39976 closed by chris.jerdonek #39983: test.regrtest: test marked as failed (env changed), but no war https://bugs.python.org/issue39983 closed by vstinner #40003: test.regrtest: add an option to run test.bisect_cmd on failed https://bugs.python.org/issue40003 closed by vstinner #40055: test___all__ and test_distutils alters the enviroinment: pkg_r https://bugs.python.org/issue40055 closed by vstinner #40163: multissl doesn't support tarballs in /source/old/ https://bugs.python.org/issue40163 closed by christian.heimes #40165: Hide stderror from the user if command failes https://bugs.python.org/issue40165 closed by BTaskaya #40192: time.thread_time isn't outputting in nanoseconds in AIX https://bugs.python.org/issue40192 closed by vstinner #40211: Clarify preadv and pwritev is supported AIX 7.1 and newer. https://bugs.python.org/issue40211 closed by BTaskaya #40273: mappingproxy isn't reversible https://bugs.python.org/issue40273 closed by rhettinger #40410: test_multiprocessing_forktest_terminate() timed out after 15 m https://bugs.python.org/issue40410 closed by vstinner #40425: Refleak in CDataObject https://bugs.python.org/issue40425 closed by zach.ware #40445: compileall.compile_dir docs aren't updated for bpo-38112 https://bugs.python.org/issue40445 closed by vstinner #40457: Python fails to compile/load _ssl module if OpenSSL is compile https://bugs.python.org/issue40457 closed by christian.heimes #40515: test_ssl.py hangs with SSL 1.1 built with no threads https://bugs.python.org/issue40515 closed by christian.heimes #40546: Inconsistencies between PEG parser and traceback SyntaxErrors https://bugs.python.org/issue40546 closed by lys.nikolaou #40548: Always run GitHub action jobs, even on documentation-only jobs https://bugs.python.org/issue40548 closed by vstinner #40579: Second argument to iterator.next not described https://bugs.python.org/issue40579 closed by rhettinger #40583: Runtime type annotation mutation leads to inconsistent behavio https://bugs.python.org/issue40583 closed by ethereon #40587: [regression] inspect.getdoc not returning docstring. https://bugs.python.org/issue40587 closed by terry.reedy #40590: test_subprocess stuck on Windows, x64 https://bugs.python.org/issue40590 closed by terry.reedy #40595: AttributeError from type annotation https://bugs.python.org/issue40595 closed by levkivskyi #40605: «python»: Aucun fichier ou dossier de ce type https://bugs.python.org/issue40605 closed by terry.reedy #40607: asyncio.wait_for should reraise future exception even if timeo https://bugs.python.org/issue40607 closed by chris.jerdonek #40612: Make traceback module's formatting of SyntaxError more similar https://bugs.python.org/issue40612 closed by gvanrossum #40622: Tests fail with python3.6 built with VS2019 https://bugs.python.org/issue40622 closed by ned.deily #40629: Error MSB4086 (numeric comparison) https://bugs.python.org/issue40629 closed by veganaiZe #40630: tracemalloc: allow resetting peak memory metric without touchi https://bugs.python.org/issue40630 closed by vstinner #40633: json.dumps() should encode float number NaN to null https://bugs.python.org/issue40633 closed by mark.dickinson #40637: Allow users to disable builtin hash modules on compile time https://bugs.python.org/issue40637 closed by christian.heimes #40639: Strange behavior in changing nested dictionaries https://bugs.python.org/issue40639 closed by steven.daprano #40641: Reserved word pair used in lambda tutorial without being noted https://bugs.python.org/issue40641 closed by mark.dickinson #40649: [Errno 1] https://bugs.python.org/issue40649 closed by TotallyLost #40650: Pytime.c doesn't need to include windows.h https://bugs.python.org/issue40650 closed by steve.dower #40651: class:`OrderedDict` Examples: LRU implementation has a bug. https://bugs.python.org/issue40651 closed by rhettinger #40653: _dirnameW is used outside HAVE_SYMLINK https://bugs.python.org/issue40653 closed by steve.dower #40655: Fix 'from x import *' which is bad programming practice from https://bugs.python.org/issue40655 closed by serhiy.storchaka #40661: The new parser segfaults when parsing invalid input https://bugs.python.org/issue40661 closed by pablogsal #40662: ast.get_source_segment behaviour with missing location info do https://bugs.python.org/issue40662 closed by pablogsal #40664: Documentation error: itertools.dropwhile(is_even, itertools.c https://bugs.python.org/issue40664 closed by SilentGhost #40665: Use Argument Clinic for bisect https://bugs.python.org/issue40665 closed by rhettinger #40669: PEG Parser benchmarks fail if memory_profiler is not installed https://bugs.python.org/issue40669 closed by lys.nikolaou #40677: IO_REPARSE_TAG_APPEXECLINK is not defined in old Windows SDK https://bugs.python.org/issue40677 closed by steve.dower #40681: shelve.open() should accept pathlib.Path https://bugs.python.org/issue40681 closed by serhiy.storchaka #40682: random.Random.seed() with version=1 does not consistently matc https://bugs.python.org/issue40682 closed by rhettinger #40683: Beta release does not distribute zoneinfo or test_zoneinfo https://bugs.python.org/issue40683 closed by p-ganssle #40693: pathlib.Path will be broken with os.chdir command. https://bugs.python.org/issue40693 closed by zach.ware #40698: distutils.command.upload md5_digest https://bugs.python.org/issue40698 closed by christian.heimes #40702: frozensets should not allow the |= operator https://bugs.python.org/issue40702 closed by serhiy.storchaka #40708: Clearing the screen of IDLE interactive mode in Windows https://bugs.python.org/issue40708 closed by ezio.melotti #40709: Malfunctioning of '\r' https://bugs.python.org/issue40709 closed by ezio.melotti #40710: Malfunctioning of '\r' (ii) https://bugs.python.org/issue40710 closed by ezio.melotti #40711: Clearing the screen of IDLE interactive mode in Windows https://bugs.python.org/issue40711 closed by ezio.melotti #40712: fstrings are not docstrings https://bugs.python.org/issue40712 closed by radkujawa #40713: _zoneinfo.c can use dst_offset without initialization in parse https://bugs.python.org/issue40713 closed by p-ganssle #40714: Remove compile warning from _zoneinfo.c https://bugs.python.org/issue40714 closed by corona10 #40715: Pegen: dict unpacking inside dict comprehension https://bugs.python.org/issue40715 closed by pablogsal #40716: Pegen: improve error messages for unparenthesized from imports https://bugs.python.org/issue40716 closed by pablogsal #40725: Documentation: Benchmark table in "What's new in Python 3.9" h https://bugs.python.org/issue40725 closed by rhettinger #40728: UnboundLocalError as a result of except statement variable re- https://bugs.python.org/issue40728 closed by pablogsal

1 0

help test pip resolver (surfacing dependency conflicts)
by Sumana Harihareswara 22 May '20

22 May '20

This is a note to alert you to https://discuss.python.org/t/announcement-pip-20-2b1-release/4242 and https://discuss.python.org/t/pip-ux-studies-test-pips-new-resolver-and-help… . A new beta release of pip, 20.2b1, has been released! And we're asking for your help to test pip's new resolver, and to spread the word about this call for testing; we're pushing to get the word out to maintainers of Python projects with complex dependencies. Thanks, Sumana Harihareswara working on pip

1 0

Please welcome our next Release Manager, Pablo!
by Barry Warsaw 21 May '20

21 May '20

In light of the release of Python 3.9b1, let’s take a moment to celebrate all the great work that our Python 3.8 and 3.9 release manager Łukasz has done. The role of Python Release Manager is hugely important to each successful release, and it can be a lot of work, often unseen and thankless to shepherd a new Python version through its first alpha release to its last security release. With all of your immeasurable help, the Release Manager ensures solid, feature-full releases that the entire Python community eagerly awaits. Łukasz carries on the fine tradition of all of our past release managers, and now that his second release has entered beta phase, I’m very happy to announce our next Release Manager, for Python 3.10 and 3.11: Pablo Galindo Salgado! Since becoming a core developer in 2018, Pablo has contributed significantly to Python. With the change to an annual release cycle (PEP 602, authored by Łukasz), the time commitment for release managers has been reduced as well, and we will continue to look for ways to make the selection process for release managers more transparent and accessible. I know that in addition to admirably managing the releases for 3.10 and 3.11, Pablo will also help to continually improve the process of selecting and serving as release manager. Please join me in welcoming Pablo in his new role! Cheers, -Barry

9 8

[RELEASE] Python 3.9.0b1 is now available for testing
by Łukasz Langa 20 May '20

20 May '20

On behalf of the entire Python development community, and the currently serving Python release team in particular, I’m pleased to announce the release of Python 3.9.0b1. Get it here: https://www.python.org/downloads/release/python-390b1/ <https://www.python.org/downloads/release/python-390b1/> This is a beta preview of Python 3.9 Python 3.9 is still in development. This release, 3.9.0b1, is the first of four planned beta release previews. Beta release previews are intended to give the wider community the opportunity to test new features and bug fixes and to prepare their projects to support the new feature release. Call to action We strongly encourage maintainers of third-party Python projects to test with 3.9 during the beta phase and report issues found to the Python bug tracker <https://bugs.python.org/> as soon as possible. While the release is planned to be feature complete entering the beta phase, it is possible that features may be modified or, in rare cases, deleted up until the start of the release candidate phase (2020-08-10). Our goal is have no ABI changes after beta 4 and as few code changes as possible after 3.9.0rc1, the first release candidate. To achieve that, it will be extremely important to get as much exposure for 3.9 as possible during the beta phase. Please keep in mind that this is a preview release and its use is not recommended for production environments. Major new features of the 3.9 series, compared to 3.8 Some of the new major new features and changes in Python 3.9 are: PEP 584 <https://www.python.org/dev/peps/pep-0584/>, Union Operators in dict PEP 585 <https://www.python.org/dev/peps/pep-0585/>, Type Hinting Generics In Standard Collections PEP 593 <https://www.python.org/dev/peps/pep-0593/>, Flexible function and variable annotations PEP 602 <https://www.python.org/dev/peps/pep-0602/>, Python adopts a stable annual release cadence PEP 616 <https://www.python.org/dev/peps/pep-0616/>, String methods to remove prefixes and suffixes PEP 617 <https://www.python.org/dev/peps/pep-0617/>, New PEG parser for CPython BPO 38379 <https://bugs.python.org/issue38379>, garbage collection does not block on resurrected objects; BPO 38692 <https://bugs.python.org/issue38692>, os.pidfd_open added that allows process management without races and signals; BPO 39926 <https://bugs.python.org/issue39926>, Unicode support updated to version 13.0.0; BPO 1635741 <https://bugs.python.org/issue1635741>, when Python is initialized multiple times in the same process, it does not leak memory anymore; A number of Python builtins (range, tuple, set, frozenset, list, dict) are now sped up using PEP 590 <https://www.python.org/dev/peps/pep-0590> vectorcall; A number of Python modules (_abc, audioop, _bz2, _codecs, _contextvars, _crypt, _functools, _json, _locale, operator, resource, time, _weakref) now use multiphase initialization as defined by PEP 489 <https://www.python.org/dev/peps/pep-0489/>; A number of standard library modules (audioop, ast, grp, _hashlib, pwd, _posixsubprocess, random, select, struct, termios, zlib) are now using the stable ABI defined by PEP 384 <https://www.python.org/dev/peps/pep-0384/>. (Hey, fellow core developer, if a feature you find important is missing from this list, let Łukasz know <mailto:lukasz@python.org>.) The next pre-release, the second beta release of Python 3.9, will be 3.9.0b2. It is currently scheduled for 2020-06-08. More resources Online Documentation <https://docs.python.org/3.9/> PEP 596 <https://www.python.org/dev/peps/pep-0596/>, 3.9 Release Schedule Report bugs at https://bugs.python.org <https://bugs.python.org/>. Help fund Python and its community <https://discuss.python.org/psf/donations/>. Your friendly release team, Ned Deily @nad <https://discuss.python.org/u/nad> Steve Dower @steve.dower <https://discuss.python.org/u/steve.dower> Łukasz Langa @ambv <https://discuss.python.org/u/ambv>

4 4

Best API to preserve mode/time/owner of extracted files with ZipFile
by Pavol Babinčák 18 May '20

18 May '20

Hi! tldr; I'm interested in having ZipFile's extract() method inverse to add() where possible. I'm not sure about which API would be best to choose. Firstly some context Zip files created by ZipFile (from zipfile module) already store last modification time and date and unix file mode of files. When files are extracted, files and directories are always created with default permissions and no other state of files is restored. Permission behavior is not documented yet [1] and an enhancement request exists for some time [2]. There have been couple of questions on StackOverflow [3], [4], [5] with various level of robustness. There is even a pull request [6] but it changes current behavior. What others do? Info-Zip's unzip[7] by default restores only "safe" permissions - SUID/SGID/Sticky bits are cleared out. Unless explicitly requested with -K option. Permissions of stored directories are not restored except under Unix. PKZIP's PKZIP[8] allows specification of a mask: [...] mask for files to be added or extracted. The mask specifies permissions which should not be archived or restored on extraction. [...] The setuid, setgid, and sticky bits are set on extracted files only if the permission option is used. And in non-zip world - GNU tar preserves permissions when -p is specified (default for superuser). Python's tarfile - extractall() always preserves ownership, date, time and permissions. Method extract() by default preserves the same but has attribute set_attr to skip all of those. Finally about ZipFile's interface enhancement I *guess* it might not be good idea to change behaviour there was for couple of releases/years now [9]. In zip world SUID/SGID/Sticky bits seems to treated specially so I guess it might be good idea to stick with that instead of imitating python's tar. Patch [10] attached to one of the issue uses various constants. Is this a good, pythonic, interface? I'm rather thinking of adding new attributes to ZipFile class, extract() and extractall() methods: - set_mode = False (sets only regular modes) - set_special_mode = False (sets only special permissions) and later to be extended with: - set_timestamp = False (sets modified time) - set_owner = False (sets owner and group) Pavol -- [1] https://bugs.python.org/issue18262 [2] https://bugs.python.org/issue15795 [3] https://stackoverflow.com/q/434641/83400 [4] https://stackoverflow.com/q/3007233/83400 [5] https://stackoverflow.com/q/42326428/83400 [6] https://github.com/python/cpython/pull/17790 [7] See man unzip(1) [8] https://support.pkware.com/home/pkzip/pkzip-securezip-for-unix-linux/pkzip_… [9] https://www.python.org/dev/peps/pep-0387/ [10] https://bugs.python.org/file34893/issue15795_test_and_doc_fixes.patch

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test_ssl.py hangs with SSL 1.1 built with no threads
by mig28suarez＠hotmail.com 17 May '20

17 May '20

Hello! This is my first time posting to the group. I've been running builds of Python 3.7.x on CentOS Linux release 7.7 (64bit/Intel Core 2 Duo) and I ran into hangs with test_ssl.py when using latest SSL 1.1.1d sources. I've done a full compilation from source for Python 3.7.7 and SSL 1.1 in my workspaces. From what I can tell the problem is when SSL 1.1 is built with no threading there is no locking enabled by python. This one line change will make the hangs in test_ssl.py go away: Index: Modules/_ssl.c =================================================================== --- Modules/_ssl.c (revision 70) +++ Modules/_ssl.c (working copy) @@ -5875,7 +5875,7 @@ if (!_setup_ssl_threads()) { return NULL; } -#elif OPENSSL_VERSION_1_1 && defined(OPENSSL_THREADS) +#elif OPENSSL_VERSION_1_1 /* OpenSSL 1.1.0 builtin thread support is enabled */ _ssl_locks_count++; #endif There appears to be an assumption in _ssl.c and test_ssl.y that SSL 1.1 will be threaded but this may not be true (as in my case). Appreciate any feedback. Thanks!

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Core Workflow change: new commit to previously approved PR now requires re-review
by Mariatta 16 May '20

16 May '20

X-post to python-committers, python-dev, and core-workflow mailing list I have just deployed a change to bedevere-bot to address the security concern related to automerging.( https://github.com/python/core-workflow/issues/325) Previously, if core dev has approved the PR and applied the "automerge" label, the PR will be automatically merged as soon as all the required CI checks passed. If the PR author added another commit after the PR has been approved but before the automerge happened, the additional commit will get merged in without additional review. Now, if there is a new commit after the PR has been approved, it will not be automerged until the the core dev re-reviews it. bedevere will remove the "awaiting merge" label and apply the "awaiting core review" label. Hope this all makes sense. And if you see any of the bot misbehaving, please open a ticket either in core-workflow repo or in the bot's own repo. Thanks.

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Summary of Python tracker Issues
by Python tracker 15 May '20

15 May '20

ACTIVITY SUMMARY (2020-05-08 - 2020-05-15) Python tracker at https://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 7468 ( +9) closed 44917 (+60) total 52385 (+69) Open issues with patches: 2996 Issues opened (44) ================== #35967: Better platform.processor support https://bugs.python.org/issue35967 reopened by lemburg #40257: Improve the use of __doc__ in pydoc https://bugs.python.org/issue40257 reopened by gvanrossum #40567: asyncio.StreadReader `async for line in reader` is not doc https://bugs.python.org/issue40567 opened by socketpair #40568: Modify -c command-line option to accept multiple inputs https://bugs.python.org/issue40568 opened by rhettinger #40569: Add optional weights to random.sample() https://bugs.python.org/issue40569 opened by rhettinger #40572: [subinterpreters] Support basic asynchronous cross-interpreter https://bugs.python.org/issue40572 opened by eric.snow #40573: inspect.iscorutinefunction() returns False for unittest.mock.A https://bugs.python.org/issue40573 opened by moriyoshi #40576: Align docs for list.sort, sorted, and on the website https://bugs.python.org/issue40576 opened by sxlijin #40579: Second argument to iterator.next not described https://bugs.python.org/issue40579 opened by Andrew Black #40583: Runtime type annotation mutation leads to inconsistent behavio https://bugs.python.org/issue40583 opened by ethereon #40586: Pydoc should support https for hyperlinks. https://bugs.python.org/issue40586 opened by owebeeone #40587: [regression] inspect.getdoc not returning docstring. https://bugs.python.org/issue40587 opened by mbussonn #40588: Creating Virtual Environments Does Not Work (Not Creating Fold https://bugs.python.org/issue40588 opened by Shengjun Zhu #40590: test_subprocess stuck on Windows, x64 https://bugs.python.org/issue40590 opened by Dima.Tisnek #40592: `Shutil.which` incosistent with windows's `where` https://bugs.python.org/issue40592 opened by alkuzad #40594: urljoin since 3.5 incorrectly filters out double slashes https://bugs.python.org/issue40594 opened by David Bell #40595: AttributeError from type annotation https://bugs.python.org/issue40595 opened by robieta #40597: generated email message exceeds RFC-mandated limit of 998 char https://bugs.python.org/issue40597 opened by ivyl #40600: Add an option to disallow creating more than one instance of a https://bugs.python.org/issue40600 opened by vstinner #40601: [C API] Hide static types from the limited C API https://bugs.python.org/issue40601 opened by vstinner #40603: slice not hashable https://bugs.python.org/issue40603 opened by Will Bradshaw #40604: Regression in 3.8.3rc1 - error in tests run via doctest https://bugs.python.org/issue40604 opened by casevh #40605: «python»: Aucun fichier ou dossier de ce type https://bugs.python.org/issue40605 opened by sab1703 #40606: Copy property return annotations to __annotations__ https://bugs.python.org/issue40606 opened by Eric Wieser #40607: asyncio.wait_for should reraise future exception even if timeo https://bugs.python.org/issue40607 opened by Roman Skurikhin #40608: PY3.8 GC segfault (Py_TRASHCAN_SAFE_BEGIN/END are not backwar https://bugs.python.org/issue40608 opened by iritkatriel #40611: Add MAP_POPULATE to the mmap library https://bugs.python.org/issue40611 opened by Ethan Steinberg #40612: Make traceback module's formatting of SyntaxError more similar https://bugs.python.org/issue40612 opened by gvanrossum #40614: ast.parse doesn't respect feature_version for debug f-strings https://bugs.python.org/issue40614 opened by hauntsaninja #40616: Add `asyncio.BufferQueue` https://bugs.python.org/issue40616 opened by lig #40617: sqlite3: expose sqlite3_create_window_function https://bugs.python.org/issue40617 opened by iljau #40620: Range tutorial shorthand could be made clearer https://bugs.python.org/issue40620 opened by docorbit(a)sonic.net #40622: Using VS2019 to automatically build Python3 and Runtest and it https://bugs.python.org/issue40622 opened by Lin #40623: JSON streaming https://bugs.python.org/issue40623 opened by phr #40624: add support for != (not-equals) in ElementTree XPath https://bugs.python.org/issue40624 opened by Antony.Lee #40625: Autogenerate signature for METH_NOARGS and perhaps METH_O exte https://bugs.python.org/issue40625 opened by Antony.Lee #40626: application/x-hdf5 mime type missing from mimetypes library https://bugs.python.org/issue40626 opened by schwabm #40628: sockmodule.c: sock_connect vs negative errno values... https://bugs.python.org/issue40628 opened by icculus #40629: Error MSB4086 (numeric comparison) https://bugs.python.org/issue40629 opened by veganaiZe #40630: tracemalloc: allow resetting peak memory metric without touchi https://bugs.python.org/issue40630 opened by huonw #40632: AttributeError: type object 'Callable' has no attribute '_abc_ https://bugs.python.org/issue40632 opened by dilyan.palauzov #40633: json.dumps() should encode float number NaN to null https://bugs.python.org/issue40633 opened by Haoyu SUN #40634: Ignored "BlockingIOError: [Errno 11] Resource temporarily unav https://bugs.python.org/issue40634 opened by Yaroslav.Halchenko #40635: Documentation for socket.getfqdn incorrect? https://bugs.python.org/issue40635 opened by cherdt Most recent 15 issues with no replies (15) ========================================== #40635: Documentation for socket.getfqdn incorrect? https://bugs.python.org/issue40635 #40634: Ignored "BlockingIOError: [Errno 11] Resource temporarily unav https://bugs.python.org/issue40634 #40630: tracemalloc: allow resetting peak memory metric without touchi https://bugs.python.org/issue40630 #40629: Error MSB4086 (numeric comparison) https://bugs.python.org/issue40629 #40628: sockmodule.c: sock_connect vs negative errno values... https://bugs.python.org/issue40628 #40626: application/x-hdf5 mime type missing from mimetypes library https://bugs.python.org/issue40626 #40625: Autogenerate signature for METH_NOARGS and perhaps METH_O exte https://bugs.python.org/issue40625 #40624: add support for != (not-equals) in ElementTree XPath https://bugs.python.org/issue40624 #40622: Using VS2019 to automatically build Python3 and Runtest and it https://bugs.python.org/issue40622 #40620: Range tutorial shorthand could be made clearer https://bugs.python.org/issue40620 #40617: sqlite3: expose sqlite3_create_window_function https://bugs.python.org/issue40617 #40616: Add `asyncio.BufferQueue` https://bugs.python.org/issue40616 #40614: ast.parse doesn't respect feature_version for debug f-strings https://bugs.python.org/issue40614 #40611: Add MAP_POPULATE to the mmap library https://bugs.python.org/issue40611 #40606: Copy property return annotations to __annotations__ https://bugs.python.org/issue40606 Most recent 15 issues waiting for review (15) ============================================= #40630: tracemalloc: allow resetting peak memory metric without touchi https://bugs.python.org/issue40630 #40612: Make traceback module's formatting of SyntaxError more similar https://bugs.python.org/issue40612 #40611: Add MAP_POPULATE to the mmap library https://bugs.python.org/issue40611 #40608: PY3.8 GC segfault (Py_TRASHCAN_SAFE_BEGIN/END are not backwar https://bugs.python.org/issue40608 #40607: asyncio.wait_for should reraise future exception even if timeo https://bugs.python.org/issue40607 #40606: Copy property return annotations to __annotations__ https://bugs.python.org/issue40606 #40597: generated email message exceeds RFC-mandated limit of 998 char https://bugs.python.org/issue40597 #40592: `Shutil.which` incosistent with windows's `where` https://bugs.python.org/issue40592 #40576: Align docs for list.sort, sorted, and on the website https://bugs.python.org/issue40576 #40572: [subinterpreters] Support basic asynchronous cross-interpreter https://bugs.python.org/issue40572 #40569: Add optional weights to random.sample() https://bugs.python.org/issue40569 #40558: update CONTRIBUTING.rst docs https://bugs.python.org/issue40558 #40552: Enhance for loop and copy example in tutorial https://bugs.python.org/issue40552 #40550: Popen.terminate fails with ProcessLookupError under certain co https://bugs.python.org/issue40550 #40548: Always run GitHub action jobs, even on documentation-only jobs https://bugs.python.org/issue40548 Top 10 most discussed issues (10) ================================= #40257: Improve the use of __doc__ in pydoc https://bugs.python.org/issue40257 15 msgs #38323: asyncio: MultiLoopWatcher has a race condition (test_asyncio: https://bugs.python.org/issue38323 14 msgs #40553: Python 3.8.2 Mac freezing/not responding when saving new progr https://bugs.python.org/issue40553 11 msgs #40605: «python»: Aucun fichier ou dossier de ce type https://bugs.python.org/issue40605 10 msgs #40334: PEP 617: new PEG-based parser https://bugs.python.org/issue40334 9 msgs #40551: PRs should be rebased on top of master before running the buil https://bugs.python.org/issue40551 9 msgs #40397: Refactor typing._GenericAlias https://bugs.python.org/issue40397 8 msgs #40477: Python Launcher app on macOS 10.15 Catalina fails to run scrip https://bugs.python.org/issue40477 8 msgs #38787: PEP 573: Module State Access from C Extension Methods https://bugs.python.org/issue38787 7 msgs #40503: PEP 615: Add zoneinfo module https://bugs.python.org/issue40503 7 msgs Issues closed (61) ================== #10915: [subinterpreters] Make the PyGILState API compatible with mult https://bugs.python.org/issue10915 closed by vstinner #24228: Interpreter triggers segmentation fault at the starting https://bugs.python.org/issue24228 closed by vstinner #26461: PyInterpreterState_Head(), PyThreadState_Next() etc can't be s https://bugs.python.org/issue26461 closed by vstinner #26817: Docs for StringIO should link to io.BytesIO https://bugs.python.org/issue26817 closed by zach.ware #30250: StringIO module truncate behavior of current position https://bugs.python.org/issue30250 closed by zach.ware #30439: [subinterpreters] Expose the subinterpreters C-API in the stdl https://bugs.python.org/issue30439 closed by vstinner #31375: [subinterpreters] Add the interpreters module to stdlib (PEP 5 https://bugs.python.org/issue31375 closed by vstinner #34346: dir() hangs interpreter https://bugs.python.org/issue34346 closed by vstinner #34821: Crash after run Python interpreter from removed directory https://bugs.python.org/issue34821 closed by vstinner #35969: Interpreter crashes with "can't initialize init_sys_streams" w https://bugs.python.org/issue35969 closed by vstinner #36877: [subinterpreters][meta] Move fields from _PyRuntimeState to Py https://bugs.python.org/issue36877 closed by vstinner #37573: asyncio: freeze when using MultiLoopChildWatcher on Solaris https://bugs.python.org/issue37573 closed by chris.jerdonek #37986: Improve perfomance of PyLong_FromDouble() https://bugs.python.org/issue37986 closed by mark.dickinson #38045: enum.Flag instance creation is slow https://bugs.python.org/issue38045 closed by Antony.Lee #38804: Regular Expression Denial of Service in http.cookiejar https://bugs.python.org/issue38804 closed by vstinner #38872: Document exec symbol for codeop.compile_command https://bugs.python.org/issue38872 closed by nanjekyejoannah #39881: [subinterpreters] Multiple Interpreters in the Stdlib (PEP 554 https://bugs.python.org/issue39881 closed by vstinner #40137: TODO list when PEP 573 "Module State Access from C Extension M https://bugs.python.org/issue40137 closed by vstinner #40142: Modify _PyObject_GC_TRACK() to ensure that newly tracked objec https://bugs.python.org/issue40142 closed by vstinner #40217: The garbage collector doesn't take in account that objects of https://bugs.python.org/issue40217 closed by vstinner #40331: Increase test coverage for the statistics module https://bugs.python.org/issue40331 closed by taleinat #40426: Unable to use lowercase hexadecimal digits for percent encodin https://bugs.python.org/issue40426 closed by serhiy.storchaka #40429: [C API] PyThreadState_GetFrame() and PyFrame_GetCode() should https://bugs.python.org/issue40429 closed by vstinner #40460: [easy] undefined name in Lib/idlelib/zzdummy.py https://bugs.python.org/issue40460 closed by vstinner #40462: [easy] undefined name in Lib/test/mock_socket.py https://bugs.python.org/issue40462 closed by vstinner #40495: compileall: option to hardlink duplicate optimization levels b https://bugs.python.org/issue40495 closed by vstinner #40502: PyNode_New() does not initialize n->n_col_offset https://bugs.python.org/issue40502 closed by nanjekyejoannah #40513: [subinterpreters] Move _PyRuntimeState.ceval to PyInterpreterS https://bugs.python.org/issue40513 closed by vstinner #40549: Convert posixmodule.c to multiphase initialization (PEP 489) https://bugs.python.org/issue40549 closed by vstinner #40556: test__xxsubinterpreters leaked [1486, 1484, 1484, 1484] refere https://bugs.python.org/issue40556 closed by vstinner #40561: Add docstrings for webbrowser open functions https://bugs.python.org/issue40561 closed by terry.reedy #40566: Apply PEP 573 to abc module https://bugs.python.org/issue40566 closed by corona10 #40570: len(platform.uname()) has changed in Python 3.9 https://bugs.python.org/issue40570 closed by jaraco #40571: Make lru_cache(maxsize=None) more discoverable https://bugs.python.org/issue40571 closed by rhettinger #40574: segfault causing regression from PEP 573 implementation (PyQt5 https://bugs.python.org/issue40574 closed by tcaswell #40575: _PyDict_GetItemIdWithError() should call _PyDict_GetItem_Known https://bugs.python.org/issue40575 closed by scoder #40577: Spyder doesn't launch from Anaconda on MacBook https://bugs.python.org/issue40577 closed by christian.heimes #40578: Deprecate numeric item access for platform.uname() https://bugs.python.org/issue40578 closed by lemburg #40580: Macintosh Documentation Still Bad https://bugs.python.org/issue40580 closed by benjamin.peterson #40581: scipy's differential_evolution bug https://bugs.python.org/issue40581 closed by christian.heimes #40582: Inconsistent exceptions caused by typing + tuple subclasses https://bugs.python.org/issue40582 closed by gvanrossum #40584: PyType_FromModuleAndSpec function should add the process of tp https://bugs.python.org/issue40584 closed by vstinner #40585: compile_command exec not raising syntax error with new PGEN Pa https://bugs.python.org/issue40585 closed by pablogsal #40589: Missing path-like versionchanged in shutil.rmtree https://bugs.python.org/issue40589 closed by serhiy.storchaka #40591: \r broken in IDLE https://bugs.python.org/issue40591 closed by terry.reedy #40593: Improve error reporting for invalid character in source code https://bugs.python.org/issue40593 closed by serhiy.storchaka #40596: str.isidentifier() does not work with non-BMP non-canonicalize https://bugs.python.org/issue40596 closed by serhiy.storchaka #40598: round() does not return an integer when given a numpy float64 https://bugs.python.org/issue40598 closed by vstinner #40599: Improve error messages with expected keywords https://bugs.python.org/issue40599 closed by pablogsal #40602: Move Modules/hashtable.h to Include/internal/pycore_hashtable. https://bugs.python.org/issue40602 closed by vstinner #40609: _tracemalloc: remove pointer_t type https://bugs.python.org/issue40609 closed by vstinner #40610: ctypes on Windows: error message on DLL load failure is mislea https://bugs.python.org/issue40610 closed by eryksun #40613: gcc 10 emits warning for unused function: _xxsubinterpretersmo https://bugs.python.org/issue40613 closed by corona10 #40615: unstable behaviour for options in argparse https://bugs.python.org/issue40615 closed by eric.smith #40618: PEG Parser: Invalid targets for augassign and except succeed https://bugs.python.org/issue40618 closed by lys.nikolaou #40619: compile() passes rest of file as SyntaxError().text when file https://bugs.python.org/issue40619 closed by pablogsal #40621: Python crashes with new parser on invalid exception handlers https://bugs.python.org/issue40621 closed by pablogsal #40627: Bus error on 'except E as a.b:' https://bugs.python.org/issue40627 closed by gvanrossum #40631: PEG Parser: Cannot used starred expression in parenthesised ex https://bugs.python.org/issue40631 closed by lys.nikolaou #1332869: Fatal Python error: Interpreter not initialized https://bugs.python.org/issue1332869 closed by vstinner #1776160: Buffer overflow when listing deeply nested directory https://bugs.python.org/issue1776160 closed by benjamin.peterson

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Python Language Summit 2020 blog posts
by Mariatta 14 May '20

14 May '20

(x-posting to python-dev and python-committters) Just wanted to share that the first 7 of 11 blog posts about presentations and discussions from Python Language Summit are now up for your enjoyment. Main article: https://pyfound.blogspot.com/2020/04/the-2020-python-language-summit.html Day 1: All strings become f-strings, Eric V Smith: https://pyfound.blogspot.com/2020/04/all-strings-become-f-strings-python.ht… Replacing CPython’s Parser with a PEG-based parser, Pablo Galindo, Lysandros Nikolaou, Guido van Rossum: https://pyfound.blogspot.com/2020/04/replacing-cpythons-parser-python.html A Formal Specification for the (C)Python Virtual Machine, Mark Shannon: https://pyfound.blogspot.com/2020/04/a-formal-specification-for-cpython.html HPy: a Future-Proof Way of Extending Python?, Antonio Cuni: https://pyfound.blogspot.com/2020/04/hpy-future-proof-way-of-extending.html CPython Documentation: The Next 5 Years, Carol Willing, Ned Batchelder: https://pyfound.blogspot.com/2020/04/cpython-documentation-next-5-years.html Day 2: Lightning talks: ( https://pyfound.blogspot.com/2020/04/lightning-talks-part-1.html) - What do you need from pip, PyPI, and packaging?, Sumana Harihareswara - A Retrospective on My "Multi-Core Python" Project, Eric Snow The Path Forward for Typing, Guido van Rossum: https://pyfound.blogspot.com/2020/04/the-path-forward-for-typing-python.html Stay tuned for more posts! Property-Based Testing for Python Builtins and the Standard Library, Zac Hatfield-Dodds Core Workflow Updates, Mariatta Wijaya CPython on Mobile Platforms, Russell Keith-Magee Few more lightning talks from Eric Holscher and Zac Hatfield-Dodds Enjoy!

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[RELEASE] Python 3.8.3 is now available
by Łukasz Langa 14 May '20

14 May '20

On behalf of the entire Python development community, and the currently serving Python release team in particular, I’m pleased to announce the release of Python 3.8.3, the third maintenance release of Python 3.8. You can find it here: https://www.python.org/downloads/release/python-383/ <https://www.python.org/downloads/release/python-383/> It contains two months worth of bug fixes. Detailed information about all changes made in 3.8.3 can be found in its change log <https://docs.python.org/release/3.8.3/whatsnew/changelog.html#python-3-8-3-…>. Note that compared to 3.8.2, version 3.8.3 also contains the changes introduced in 3.8.3rc1. The Python 3.8 series is the newest feature release of the Python language, and it contains many new features and optimizations. See the “What’s New in Python 3.8 <https://docs.python.org/3.8/whatsnew/3.8.html>” document for more information about features included in the 3.8 series. Maintenance releases for the 3.8 series will continue at regular bi-monthly intervals, with 3.8.4 planned for mid-July 2020. One more thing Unless blocked on any critical issue, Monday May 18th will be the release date of Python 3.9.0 beta 1. It’s a special release for us because this is when we lock the feature set for Python 3.9. If you can help testing the current available alpha release, that would be very helpful: https://www.python.org/downloads/release/python-390a6/ <https://www.python.org/downloads/release/python-390a6/> We hope you enjoy the new Python release! Thanks to all of the many volunteers who help make Python Development and these releases possible! Please consider supporting our efforts by volunteering yourself or through organization contributions to the Python Software Foundation. https://www.python.org/psf/ <https://www.python.org/psf/> Your friendly release team, Ned Deily @nad <https://discuss.python.org/u/nad> Steve Dower @steve.dower <https://discuss.python.org/u/steve.dower> Łukasz Langa @ambv <https://discuss.python.org/u/ambv>

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