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* Minor formatting edits to the descriptor howto guide (GH-23092)Raymond Hettinger2020-11-021-19/+20
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* bpo-40511: Stop unwanted flashing of IDLE calltips (GH-20910)Tal Einat2020-11-024-7/+144
| | | | | | They were occurring with both repeated 'force-calltip' invocations and by typing parentheses in expressions, strings, and comments in the argument code. Co-authored-by: Terry Jan Reedy <tjreedy@udel.edu>
* Add member objects to the descriptor howto guide (GH-23084)Raymond Hettinger2020-11-021-0/+156
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* bpo-37193: remove thread objects which finished process its request (GH-13893)MARUYAMA Norihiro2020-11-013-13/+86
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * bpo-37193: remove the thread which finished process request from threads list * rename variable t to thread. * don't remove thread from list if it is daemon. * use lock to protect self._threads. * use finally block in case of exception from shutdown_request(). * check "not thread.daemon" before lock to avoid holding the lock if it's unnecessary. * fix the place of _threads_lock. * separate code to remove a current thread into a function. * check ValueError when removing thread. * fix wrong code which all instance shared same lock. * Extract thread management into a _Threads class to encapsulate atomic operations and separate concerns. * Replace multiple references of 'block_on_close' with one, avoiding the possibility that 'block_on_close' could change during the course of processing requests. Now, there's exactly one _threads object with behavior fixed for the duration. * Add docstrings to private classes. * Add test to ensure that a ThreadingTCPServer can be closed without serving any requests. * Use _NoThreads as the default value. Fixes AttributeError when server is closed without serving any requests. * Add blurb * Add test capturing failure. Co-authored-by: Jason R. Coombs <jaraco@jaraco.com>
* bpo-42236: Use UTF-8 encoding if nl_langinfo(CODESET) fails (GH-23086)Victor Stinner2020-11-018-90/+88
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the nl_langinfo(CODESET) function returns an empty string, Python now uses UTF-8 as the filesystem encoding. In May 2010 (commit b744ba1d14c5487576c95d0311e357b707600b47), I modified Python to log a warning and use UTF-8 as the filesystem encoding (instead of None) if nl_langinfo(CODESET) returns an empty string. In August 2020 (commit 94908bbc1503df830d1d615e7b57744ae1b41079), I modified Python startup to fail with a fatal error and a specific error message if nl_langinfo(CODESET) returns an empty string. The intent was to prevent guessing the encoding and also investigate user configuration where this case happens. In 10 years (2010 to 2020), I saw zero user report about the error message related to nl_langinfo(CODESET) returning an empty string. Today, UTF-8 became the defacto standard and it's safe to make the assumption that the user expects UTF-8. For example, nl_langinfo(CODESET) can return an empty string on macOS if the LC_CTYPE locale is not supported, and UTF-8 is the default encoding on macOS. While this change is likely to not affect anyone in practice, it should make UTF-8 lover happy ;-) Rewrite also the documentation explaining how Python selects the filesystem encoding and error handler.
* bpo-42236: Enhance _locale._get_locale_encoding() (GH-23083)Victor Stinner2020-11-015-52/+76
| | | | | | | | | * Rename _Py_GetLocaleEncoding() to _Py_GetLocaleEncodingObject() * Add _Py_GetLocaleEncoding() which returns a wchar_t* string to share code between _Py_GetLocaleEncodingObject() and config_get_locale_encoding(). * _Py_GetLocaleEncodingObject() now decodes nl_langinfo(CODESET) from the current locale encoding with surrogateescape, rather than using UTF-8.
* bpo-42233: Correctly repr GenericAlias when used with typing module (GH-23081)kj2020-11-013-0/+12
| | | | | | | | | | | | | | | Noticed by @serhiy-storchaka in the bpo. `typing`'s types were not showing the parameterized generic. Eg. previously: ```python >>> typing.Union[dict[str, float], list[int]] 'typing.Union[dict, list]' ``` Now: ```python >>> typing.Union[dict[str, float], list[int]] 'typing.Union[dict[str, float], list[int]]' ``` Automerge-Triggered-By: GH:gvanrossum
* Expand and clarify the "Invoking Descriptors" section of the Descriptor ↵Raymond Hettinger2020-11-012-38/+79
| | | | HowTo (GH-23078)
* bpo-37483: Add PyObject_CallOneArg() in the What's New in Python 3.9 (GH-23062)Dong-hee Na2020-11-011-0/+4
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* tempfile: Use random.choises() instead of choise() (GH-23068)Inada Naoki2020-11-012-6/+3
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* bpo-29566: binhex.binhex now consitently writes MacOS 9 line endings. (GH-23059)Ronald Oussoren2020-11-013-2/+15
| | | [bpo-29566]() notes that binhex.binhex uses inconsistent line endings (both Unix and MacOS9 line endings are used). This PR changes this to use the MacOS9 line endings everywhere.
* bpo-42146: Unify cleanup in subprocess_fork_exec() (GH-22970)Alexey Izbyshev2020-11-011-35/+18
| | | | | | | | | | | * bpo-42146: Unify cleanup in subprocess_fork_exec() Also ignore errors from _enable_gc(): * They are always suppressed by the current code due to a bug. * _enable_gc() is only used if `preexec_fn != None`, which is unsafe. * We don't have a good way to handle errors in case we successfully created a child process. Co-authored-by: Gregory P. Smith <greg@krypto.org>
* bpo-42198: New section in stdtypes for type annotation types (GH-23063)kj2020-10-311-4/+14
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* bpo-42218: Correctly handle errors in left-recursive rules (GH-23065)Lysandros Nikolaou2020-10-314-0/+32
| | | | | | | Left-recursive rules need to check for errors explicitly, since even if the rule returns NULL, the parsing might continue and lead to long-distance failures. Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
* bpo-42198: Improve consistency of Union docs (GH-23029)kj2020-10-312-24/+15
| | | | | | | No backport is required since union is only in 3.10. This addresses "3. Consistency nitpicks for Union's docs" in the bpo. Please skip news. Thank you.
* bpo-40956: Convert _sqlite3 module level functions to Argument Clinic (GH-22484)Erlend Egeberg Aasland2020-10-314-88/+313
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* bpo-42198: Document __new__ for types.GenericAlias (GH-23039)kj2020-10-312-2/+14
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* Revert "bpo-42160: tempfile: Reduce overhead of pid check. (GH-22997)"Inada Naoki2020-10-313-13/+14
| | | | | `_RandomNameSequence` is not true singleton so using `os.register_at_fork` doesn't make sense unlike `random._inst`. This reverts commit 8e409cebad42032bb7d0f2cadd8b1e36081d98af.
* bpo-42208: Add _locale._get_locale_encoding() (GH-23052)Victor Stinner2020-10-316-102/+85
| | | | | | * Add a new _locale._get_locale_encoding() function to get the current locale encoding. * Modify locale.getpreferredencoding() to use it. * Remove the _bootlocale module.
* bpo-42208: Add _Py_GetLocaleEncoding() (GH-23050)Victor Stinner2020-10-316-110/+112
| | | | | | | | _io.TextIOWrapper no longer calls getpreferredencoding(False) of _bootlocale to get the locale encoding, but calls _Py_GetLocaleEncoding() instead. Add config_get_fs_encoding() sub-function. Reorganize also config_get_locale_encoding() code.
* bpo-42214: Fix check for NOTEQUAL token in the PEG parser for the ↵Pablo Galindo2020-10-306-5/+23
| | | | barry_as_flufl rule (GH-23048)
* GitHub Action: Add gdb to posix dependencies (GH-23043)Victor Stinner2020-10-301-6/+6
| | | Sort also dependencies and remove duplicates (liblzma-dev).
* bpo-42208: Call GC collect earlier in PyInterpreterState_Clear() (GH-23044)Victor Stinner2020-10-304-15/+35
| | | | | | | | The last GC collection is now done before clearing builtins and sys dictionaries. Add also assertions to ensure that gc.collect() is no longer called after _PyGC_Fini(). Pass also the tstate to PyInterpreterState_Clear() to pass the correct tstate to _PyGC_CollectNoFail() and _PyGC_Fini().
* bpo-36876: Small adjustments to the C-analyzer tool. (GH-23045)Eric Snow2020-10-3016-218/+633
| | | This is a little bit of clean-up, small fixes, and additional helpers prior to building an updated & accurate list of globals to eliminate.
* bpo-42208: Fix test_gdb for gc_collect_main() name (GH-23041)Victor Stinner2020-10-301-2/+2
| | | | The gcmodule.c collect() function was renamed to gc_collect_main(): update gdb/libpython.py (python-gdb.py).
* bpo-42208: Move _PyImport_Cleanup() to pylifecycle.c (GH-23040)Victor Stinner2020-10-302-230/+290
| | | | | Move _PyImport_Cleanup() to pylifecycle.c, rename it to finalize_modules(), split it (200 lines) into many smaller sub-functions and cleanup the code.
* bpo-42208: Pass tstate to _PyGC_CollectNoFail() (GH-23038)Victor Stinner2020-10-305-34/+25
| | | | | | | | | | | | Move private _PyGC_CollectNoFail() to the internal C API. Remove the private _PyGC_CollectIfEnabled() which was just an alias to the public PyGC_Collect() function since Python 3.8. Rename functions: * collect() => gc_collect_main() * collect_with_callback() => gc_collect_with_callback() * collect_generations() => gc_collect_generations()
* DOC: attribute PyPy for the idea behind LOAD_ATTR cache (GH-23036)Matti Picus2020-10-301-1/+1
| | | Co-authored-by: Pablo Galindo <Pablogsal@gmail.com>
* bpo-42206: Propagate and raise errors from PyAST_Validate in the parser ↵Batuhan Taskaya2020-10-302-1/+5
| | | | (GH-23035)
* bpo-42172: Correct typo for test_socket.py (GH-23013)Akashkumar D Khunt2020-10-301-3/+3
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* bpo-42160: tempfile: Reduce overhead of pid check. (GH-22997)Eric W2020-10-303-14/+13
| | | | The _RandomSequence class in tempfile used to check the current pid every time its rng property was used. This commit replaces this code with `os.register_at_fork` to reduce the overhead.
* bpo-42198: Link to GenericAlias in typing and expressions (GH-23030)kj2020-10-302-44/+75
| | | Follow up to 7cdf30fff39ea97f403b5472096349998d190e30 and 4173320920706b49a004bdddd8d7108e8984e3fc. This addresses the point "1. Update links in typing, subscription and union to point to GenericAlias." in the bpo for this PR.
* bpo-42061: Document __format__ for IP addresses (GH-23018)Teugea Ioan-Teodor2020-10-293-4/+39
| | | Automerge-Triggered-By: GH:ericvsmith
* bpo-42180: fix plural in arguments and control (GH-23015)Rafael Fontenelle2020-10-291-1/+1
| | | https://bugs.python.org/issue42180
* bpo-42029: Remove IRIX code (GH-23023)Victor Stinner2020-10-294-25/+8
| | | | IRIX code was slowy removed in Python 2.4 (--with-sgi-dl), Python 3.3 (Irix threads), and Python 3.7.
* bpo-42143: Ensure PyFunction_NewWithQualName() can't fail after creating the ↵Yonatan Goldschmidt2020-10-292-13/+18
| | | | | | func object (GH-22953) func_dealloc() does not handle partially-created objects. Best not to give it any.
* bpo-34204: Use pickle.DEFAULT_PROTOCOL in shelve (GH-19639)Zackery Spytz2020-10-295-8/+29
| | | | Use pickle.DEFAULT_PROTOCOL (currently 5) in shelve instead of a hardcoded 3.
* bpo-41805: Documentation for PEP 585 (GH-22615)kj2020-10-274-0/+211
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* bpo-42161: Micro-optimize _collections._count_elements() (GH-23008)Victor Stinner2020-10-271-4/+5
| | | Move the _PyLong_GetOne() call outside the fast-path loop.
* bpo-42161: Remove private _PyLong_Zero and _PyLong_One (GH-23003)Victor Stinner2020-10-273-23/+0
| | | | | Use PyLong_FromLong(0) and PyLong_FromLong(1) of the public C API instead. For Python internals, _PyLong_GetZero() and _PyLong_GetOne() of pycore_long.h can be used.
* bpo-42099: Fix reference to ob_type in unionobject.c and ceval (GH-22829)Neil Schemenauer2020-10-272-2/+2
| | | * Use Py_TYPE() rather than o->ob_type.
* bpo-41659: Disallow curly brace directly after primary (GH-22996)Lysandros Nikolaou2020-10-275-167/+244
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* bpo-6761: Enhance __call__ documentation (GH-7987)Andre Delfino2020-10-271-1/+1
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* bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)Victor Stinner2020-10-2714-36/+57
| | | | | | Use _PyLong_GetZero() and _PyLong_GetOne() in Modules/ directory. _cursesmodule.c and zoneinfo.c are now built with Py_BUILD_CORE_MODULE macro defined.
* bpo-41474, Makefile: Add dependency on cpython/frameobject.h (GH-22999)Victor Stinner2020-10-271-0/+1
| | | Co-Authored-By: Skip Montanaro <skip.montanaro@gmail.com>
* bpo-42157: Rename unicodedata.ucnhash_CAPI (GH-22994)Victor Stinner2020-10-275-5/+13
| | | | | | | Removed the unicodedata.ucnhash_CAPI attribute which was an internal PyCapsule object. The related private _PyUnicode_Name_CAPI structure was moved to the internal C API. Rename unicodedata.ucnhash_CAPI as unicodedata._ucnhash_CAPI.
* bpo-42161: Use _PyLong_GetZero() and _PyLong_GetOne() (GH-22995)Victor Stinner2020-10-279-40/+68
| | | | Use _PyLong_GetZero() and _PyLong_GetOne() in Objects/ and Python/ directories.
* bpo-30681: Support invalid date format or value in email Date header (GH-22090)Georges Toth2020-10-2710-5/+59
| | | | | | | | | | | | | | | | | | | | I am re-submitting an older PR which was abandoned but is still relevant, #10783 by @timb07. The issue being solved () is still relevant. The original PR #10783 was closed as the final request changes were not applied and since abandoned. In this new PR I have re-used the original patch plus applied both comments from the review, by @maxking and @pganssle. For reference, here is the original PR description: In email.utils.parsedate_to_datetime(), a failure to parse the date, or invalid date components (such as hour outside 0..23) raises an exception. Document this behaviour, and add tests to test_email/test_utils.py to confirm this behaviour. In email.headerregistry.DateHeader.parse(), check when parsedate_to_datetime() raises an exception and add a new defect InvalidDateDefect; preserve the invalid value as the string value of the header, but set the datetime attribute to None. Add tests to test_email/test_headerregistry.py to confirm this behaviour; also added test to test_email/test_inversion.py to confirm emails with such defective date headers round trip successfully. This pull request incorporates feedback gratefully received from @bitdancer, @brettcannon, @Mariatta and @warsaw, and replaces the earlier PR #2254. Automerge-Triggered-By: GH:warsaw
* bpo-42161: Add _PyLong_GetZero() and _PyLong_GetOne() (GH-22993)Victor Stinner2020-10-266-25/+67
| | | | | | Add _PyLong_GetZero() and _PyLong_GetOne() functions and a new internal pycore_long.h header file. Python cannot be built without small integer singletons anymore.
* bpo-42123: Run the parser two times and only enable invalid rules on the ↵Lysandros Nikolaou2020-10-266-50/+70
| | | | | | | | | | second run (GH-22111) * Implement running the parser a second time for the errors messages The first parser run is only responsible for detecting whether there is a `SyntaxError` or not. If there isn't the AST gets returned. Otherwise, the parser is run a second time with all the `invalid_*` rules enabled so that all the customized error messages get produced.
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