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* bpo-42266: Handle monkey-patching descriptors in LOAD_ATTR cache (GH-23157)Pablo Galindo2020-11-054-7/+28
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* bpo-40816 Add AsyncContextDecorator class (GH-20516)Kazantcev Andrey2020-11-054-1/+114
| | | | Co-authored-by: Yury Selivanov <yury@edgedb.com>
* bpo-42260: Add _PyInterpreterState_SetConfig() (GH-23158)Victor Stinner2020-11-049-16/+189
| | | | | | | | * Inline _PyInterpreterState_SetConfig(): replace it with _PyConfig_Copy(). * Add _PyErr_SetFromPyStatus() * Add _PyInterpreterState_GetConfigCopy() * Add a new _PyInterpreterState_SetConfig() function. * Add an unit which gets, modifies, and sets the config.
* Disable peg generator tests when building with PGO (GH-23141)serge-sans-paille2020-11-041-0/+6
| | | | | Otherwise, when running the testsuite, test_peg_generator tries to compile C code using the optimized flags and fails because it cannot find the profile data.
* bpo-1635741: _sqlite3 uses PyModule_AddObjectRef() (GH-23148)Erlend Egeberg Aasland2020-11-042-17/+16
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* bpo-1635741: Fix PyInit_pyexpat() error handling (GH-22489)Mohamed Koubaa2020-11-041-189/+299
| | | | Split PyInit_pyexpat() into sub-functions and fix reference leaks on error paths.
* bpo-42260: Main init modify sys.flags in-place (GH-23150)Victor Stinner2020-11-044-74/+89
| | | | | | | | | | | When Py_Initialize() is called twice, the second call now updates more sys attributes for the configuration, rather than only sys.argv. * Rename _PySys_InitMain() to _PySys_UpdateConfig(). * _PySys_UpdateConfig() now modifies sys.flags in-place, instead of creating a new flags object. * Remove old commented sys.flags flags (unbuffered and skip_first). * Add private _PySys_GetObject() function. * When Py_Initialize(), Py_InitializeFromConfig() and
* bpo-1635741: Fix ref leak in _PyWarnings_Init() error path (GH-23151)Victor Stinner2020-11-042-11/+5
| | | | | | Replace PyModule_AddObject() with PyModule_AddObjectRef() in the _warnings module to fix a reference leak on error. Use also PyModule_AddObjectRef() in importdl.c.
* bpo-1635741: _ast uses PyModule_AddObjectRef() (GH-23146)Victor Stinner2020-11-042-220/+117
| | | | Replace PyModule_AddObject() with PyModule_AddObjectRef() in the _ast module (Python-ast.c).
* bpo-1635741: _contextvars uses PyModule_AddType() (GH-23147)Victor Stinner2020-11-042-21/+6
| | | | | | Replace PyModule_AddObject() with PyModule_AddType() in the _contextvars module (Python-ast.c). Add also the module name to _contextvars types name.
* bpo-42260: Reorganize PyConfig (GH-23149)Victor Stinner2020-11-041-5/+5
| | | | | | | | * Move orig_argv before argv * Move program_name and platlibdir with other path configuration inputs Give a name to the PyPreConfig and PyConfig structures and separate the type definitions.
* bpo-1635741: Add PyModule_AddObjectRef() function (GH-23122)Victor Stinner2020-11-045-46/+146
| | | | | Added PyModule_AddObjectRef() function: similar to PyModule_AddObjectRef() but don't steal a reference to the value on success.
* bpo-42236: os.device_encoding() respects UTF-8 Mode (GH-23119)Victor Stinner2020-11-045-17/+52
| | | | On Unix, the os.device_encoding() function now returns 'UTF-8' rather than the device encoding if the Python UTF-8 Mode is enabled.
* bpo-42251: Add gettrace and getprofile to threading (GH-23125)Mario Corchero2020-11-045-1/+61
| | | This allows to retrieve the functions that were set in these two, which might differ from sys.gettrace and sys.getprofile within a thread.
* Enable signing of nuget.org packages and update to supported timestamp ↵Steve Dower2020-11-035-8/+17
| | | | server (GH-23132)
* Fix incorrect links in ast docs (GH-23017)Matthew Suozzo2020-11-031-6/+7
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* Add _PyType_GetModuleByDef (GH-22835)Petr Viktorin2020-11-034-3/+52
| | | | | See https://mail.python.org/archives/list/capi-sig@python.org/thread/T3P2QNLNLBRFHWSKYSTPMVEIL2EEKFJU/ for discussion. https://bugs.python.org/issue42100
* Post 3.10.0a2Pablo Galindo2020-11-031-1/+1
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* Merge tag 'v3.10.0a2' into masterPablo Galindo2020-11-0393-255/+1047
|\ | | | | | | Python 3.10.0a2
| * Python 3.10.0a2v3.10.0a2Pablo Galindo2020-11-0393-255/+1047
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* | bpo-41796: Call _PyAST_Fini() earlier to fix a leak (GH-23131)Victor Stinner2020-11-035-44/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Call _PyAST_Fini() on all interpreters, not only on the main interpreter. Also, call it ealier to fix a reference leak. Python types contain a reference to themselves in in their PyTypeObject.tp_mro member. _PyAST_Fini() must called before the last GC collection to destroy AST types. _PyInterpreterState_Clear() now calls _PyAST_Fini(). It now also calls _PyWarnings_Fini() on subinterpeters, not only on the main interpreter. Add an assertion in AST init_types() to ensure that the _ast module is no longer used after _PyAST_Fini() has been called.
* | bpo-42249: Fix writing binary Plist files larger than 4 GiB. (GH-23121)Serhiy Storchaka2020-11-032-1/+2
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* | bpo-40077: Convert mmap.mmap static type to a heap type (GH-23108)Erlend Egeberg Aasland2020-11-032-68/+91
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* bpo-35455: Fix thread_time for Solaris OS (GH-11118)Jakub Kulík2020-11-022-0/+20
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* bpo-26789: Fix logging.FileHandler._open() at exit (GH-23053)Victor Stinner2020-11-024-8/+50
| | | | | | | | | | | | | | | | | | | The logging.FileHandler class now keeps a reference to the builtin open() function to be able to open or reopen the file during Python finalization. Fix errors like: Exception ignored in: (...) Traceback (most recent call last): (...) File ".../logging/__init__.py", line 1463, in error File ".../logging/__init__.py", line 1577, in _log File ".../logging/__init__.py", line 1587, in handle File ".../logging/__init__.py", line 1649, in callHandlers File ".../logging/__init__.py", line 948, in handle File ".../logging/__init__.py", line 1182, in emit File ".../logging/__init__.py", line 1171, in _open NameError: name 'open' is not defined
* bpo-41796: Make _ast module state per interpreter (GH-23024)Victor Stinner2020-11-028-202/+549
| | | | | | | | | | | The ast module internal state is now per interpreter. * Rename "astmodulestate" to "struct ast_state" * Add pycore_ast.h internal header: the ast_state structure is now declared in pycore_ast.h. * Add PyInterpreterState.ast (struct ast_state) * Remove get_ast_state() * Rename get_global_ast_state() to get_ast_state() * PyAST_obj2mod() now handles get_ast_state() failures
* bpo-42103: Improve validation of Plist files. (GH-22882)Serhiy Storchaka2020-11-024-57/+363
| | | | | | | | * Prevent some possible DoS attacks via providing invalid Plist files with extremely large number of objects or collection sizes. * Raise InvalidFileException for too large bytes and string size instead of returning garbage. * Raise InvalidFileException instead of ValueError for specific invalid datetime (NaN). * Raise InvalidFileException instead of TypeError for non-hashable dict keys. * Add more tests for invalid Plist files.
* bpo-41943: Fix bug where assertLogs doesn't correctly filter messages… ↵Irit Katriel2020-11-023-0/+14
| | | | | | | | | (GH-22565) … by level @vsajip , @pitrou Automerge-Triggered-By: GH:vsajip
* Revert "bpo-37193: remove thread objects which finished process its request ↵Jason R. Coombs2020-11-023-86/+13
| | | | | (GH-13893)" (GH-23107) This reverts commit c41559021213cfc9dc62a83fc63306b3bdc3e64b.
* bpo-42236: Enhance init and encoding documentation (GH-23109)Victor Stinner2020-11-0219-523/+738
| | | | | | | | | | | | | | | | | | | | | Enhance the documentation of the Python startup, filesystem encoding and error handling, locale encoding. Add a new "Python UTF-8 Mode" section. * Add "locale encoding" and "filesystem encoding and error handler" to the glossary * Remove documentation from Include/cpython/initconfig.h: move it to Doc/c-api/init_config.rst. * Doc/c-api/init_config.rst: * Document command line options and environment variables * Document default values. * Add a new "Python UTF-8 Mode" section in Doc/library/os.rst. * Add warnings to Py_DecodeLocale() and Py_EncodeLocale() docs. * Document how Python selects the filesystem encoding and error handler at a single place: PyConfig.filesystem_encoding and PyConfig.filesystem_errors. * PyConfig: move orig_argv member at the right place.
* bpo-42224: Fix test_format when locale does not expect number grouping ↵Lysandros Nikolaou2020-11-021-2/+5
| | | | (GH-23067)
* bpo-41435: Add sys._current_exceptions() function (GH-21689)Julien Danjou2020-11-027-1/+185
| | | | | | This adds a new function named sys._current_exceptions() which is equivalent ot sys._current_frames() except that it returns the exceptions currently handled by other threads. It is equivalent to calling sys.exc_info() for each running thread.
* bpo-42230: Improve asyncio documentation regarding accepting sets vs ↵Jakub Stasiak2020-11-022-6/+6
| | | | | | | | | | | | | | iterables (GH-23073) People call wait() and as_completed() with various non-set iterables, a list should be the most common but there are others as well[1]. Considering typeshed also documents wait()[2] and as_completed()[3] as accepting arbitrary iterables I think it's a good idea to document the status quo better. [1] https://github.com/aio-libs/aiokafka/pull/672 [2] https://github.com/python/typeshed/blob/620989bac572f30349b95590ebe81a73ce0fe862/stdlib/3/asyncio/tasks.pyi#L161 [3] https://github.com/python/typeshed/blob/620989bac572f30349b95590ebe81a73ce0fe862/stdlib/3/asyncio/tasks.pyi#L40
* bpo-41229: Update docs for explicit aclose()-required cases and add ↵Joongi Kim2020-11-025-4/+133
| | | | | | | | | | | | | | | | | | | contextlib.aclosing() method (GH-21545) This is a PR to: * Add `contextlib.aclosing` which ia analogous to `contextlib.closing` but for async-generators with an explicit test case for [bpo-41229]() * Update the docs to describe when we need explicit `aclose()` invocation. which are motivated by the following issues, articles, and examples: * [bpo-41229]() * https://github.com/njsmith/async_generator * https://vorpus.org/blog/some-thoughts-on-asynchronous-api-design-in-a-post-asyncawait-world/#cleanup-in-generators-and-async-generators * https://www.python.org/dev/peps/pep-0533/ * https://github.com/achimnol/aiotools/blob/ef7bf0cea7af/src/aiotools/context.py#L152 Particuarly regarding [PEP-533](https://www.python.org/dev/peps/pep-0533/), its acceptance (`__aiterclose__()`) would make this little addition of `contextlib.aclosing()` unnecessary for most use cases, but until then this could serve as a good counterpart and analogy to `contextlib.closing()`. The same applies for `contextlib.closing` with `__iterclose__()`. Also, still there are other use cases, e.g., when working with non-generator objects with `aclose()` methods.
* 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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