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* bpo-26423: Fix possible overflow in wrap_lenfunc() (GH-13606)Zackery Spytz2019-05-281-0/+2
| | | | Fix possible overflow in wrap_lenfunc() when sizeof(long) < sizeof(Py_ssize_t) (e.g., 64-bit Windows).
* bpo-32299: Return patched dict when using patch.dict as a context manager ↵Mario Corchero2019-05-281-0/+2
| | | | | | (GH-11062)
* bpo-36922: implement PEP-590 Py_TPFLAGS_METHOD_DESCRIPTOR (GH-13338)Jeroen Demeyer2019-05-281-0/+3
| | | Co-authored-by: Mark Shannon <mark@hotpy.org>
* bpo-35279: reduce default max_workers of ThreadPoolExecutor (GH-13618)Inada Naoki2019-05-281-0/+3
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* bpo-29883: Asyncio proactor udp (GH-13440)Andrew Svetlov2019-05-281-0/+2
| | | | | | Follow-up for #1067 https://bugs.python.org/issue29883
* bpo-37058: PEP 544: Add Protocol to typing module (GH-13585)Ivan Levkivskyi2019-05-281-0/+1
| | | | | I tried to get rid of the `_ProtocolMeta`, but unfortunately it didn'y work. My idea to return a generic alias from `@runtime_checkable` made runtime protocols unpickleable. I am not sure what is worse (a custom metaclass or having some classes unpickleable), so I decided to stick with the status quo (since there were no complains so far). So essentially this is a copy of the implementation in `typing_extensions` with two modifications: * Rename `@runtime` to `@runtime_checkable` (plus corresponding updates). * Allow protocols that extend `collections.abc.Iterable` etc.
* bpo-36933: Remove sys.set_coroutine_wrapper (marked for removal in 3.8) ↵Matthias Bussonnier2019-05-281-0/+2
| | | | | | | | | | (GH-13577) It has been documented as deprecated and to be removed in 3.8; From a comment on another thread – which I can't find ; leave get_coro_wrapper() for now, but always return `None`. https://bugs.python.org/issue36933
* bpo-36996: Handle async functions when mock.patch is used as a decorator ↵Xtreak2019-05-281-0/+1
| | | | | | | | | | (GH-13562) Return a coroutine while patching async functions with a decorator. Co-authored-by: Andrew Svetlov <andrew.svetlov@gmail.com> https://bugs.python.org/issue36996
* bpo-36686: Improve the documentation of the std* params in ↵sbstp2019-05-271-0/+6
| | | | | loop.subprocess_exec (GH-13586) https://bugs.python.org/issue36686
* bpo-37054, _pyio: Fix BytesIO and TextIOWrapper __del__() (GH-13601)Victor Stinner2019-05-271-0/+3
| | | | | Fix destructor _pyio.BytesIO and _pyio.TextIOWrapper: initialize their _buffer attribute as soon as possible (in the class body), because it's used by __del__() which calls close().
* bpo-1230540: Add threading.excepthook() (GH-13515)Victor Stinner2019-05-271-0/+3
| | | | | | | | | | | | | | | | | | | Add a new threading.excepthook() function which handles uncaught Thread.run() exception. It can be overridden to control how uncaught exceptions are handled. threading.ExceptHookArgs is not documented on purpose: it should not be used directly. * threading.excepthook() and threading.ExceptHookArgs. * Add _PyErr_Display(): similar to PyErr_Display(), but accept a 'file' parameter. * Add _thread._excepthook(): C implementation of the exception hook calling _PyErr_Display(). * Add _thread._ExceptHookArgs: structseq type. * Add threading._invoke_excepthook_wrapper() which handles the gory details to ensure that everything remains alive during Python shutdown. * Add unit tests.
* bpo-36889: Merge asyncio streams (GH-13251)Andrew Svetlov2019-05-271-0/+6
| | | https://bugs.python.org/issue36889
* bpo-37050: Remove expr_text from FormattedValue ast node, use Constant node ↵Eric V. Smith2019-05-271-0/+4
| | | | | instead (GH-13597) When using the "=" debug functionality of f-strings, use another Constant node (or a merged constant node) instead of adding expr_text to the FormattedValue node.
* bpo-32941: Add madvise() for mmap objects (GH-6172)Zackery Spytz2019-05-271-0/+2
| | | | Allow mmap objects to access the madvise() system call.
* bpo-36763: Implement the PEP 587 (GH-13592)Victor Stinner2019-05-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Add a whole new documentation page: "Python Initialization Configuration" * PyWideStringList_Append() return type is now PyStatus, instead of int * PyInterpreterState_New() now calls PyConfig_Clear() if PyConfig_InitPythonConfig() fails. * Rename files: * Python/coreconfig.c => Python/initconfig.c * Include/cpython/coreconfig.h => Include/cpython/initconfig.h * Include/internal/: pycore_coreconfig.h => pycore_initconfig.h * Rename structures * _PyCoreConfig => PyConfig * _PyPreConfig => PyPreConfig * _PyInitError => PyStatus * _PyWstrList => PyWideStringList * Rename PyConfig fields: * use_module_search_paths => module_search_paths_set * module_search_path_env => pythonpath_env * Rename PyStatus field: _func => func * PyInterpreterState: rename core_config field to config * Rename macros and functions: * _PyCoreConfig_SetArgv() => PyConfig_SetBytesArgv() * _PyCoreConfig_SetWideArgv() => PyConfig_SetArgv() * _PyCoreConfig_DecodeLocale() => PyConfig_SetBytesString() * _PyInitError_Failed() => PyStatus_Exception() * _Py_INIT_ERROR_TYPE_xxx enums => _PyStatus_TYPE_xxx * _Py_UnixMain() => Py_BytesMain() * _Py_ExitInitError() => Py_ExitStatusException() * _Py_PreInitializeFromArgs() => Py_PreInitializeFromBytesArgs() * _Py_PreInitializeFromWideArgs() => Py_PreInitializeFromArgs() * _Py_PreInitialize() => Py_PreInitialize() * _Py_RunMain() => Py_RunMain() * _Py_InitializeFromConfig() => Py_InitializeFromConfig() * _Py_INIT_XXX() => _PyStatus_XXX() * _Py_INIT_FAILED() => _PyStatus_EXCEPTION() * Rename 'err' PyStatus variables to 'status' * Convert RUN_CODE() macro to config_run_code() static inline function * Remove functions: * _Py_InitializeFromArgs() * _Py_InitializeFromWideArgs() * _PyInterpreterState_GetCoreConfig()
* bpo-37027: Return a proxy socket object from transp.get_extra_info('socket') ↵Yury Selivanov2019-05-271-0/+2
| | | | | | | | | | (GH-13530) Return a safe to use proxy socket object from `transport.get_extra_info('socket')` https://bugs.python.org/issue37027
* bpo-35397: Remove deprecation and document urllib.parse.unwrap (GH-11481)Rémi Lapeyre2019-05-271-0/+2
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* bpo-37035: Don't log OSError (GH-13548)Andrew Svetlov2019-05-271-0/+5
| | | https://bugs.python.org/issue37035
* bpo-37047: Refactor AsyncMock setup logic for autospeccing (GH-13574)Xtreak2019-05-271-0/+3
| | | | Handle late binding and attribute access in unittest.mock.AsyncMock setup for autospeccing.
* bpo-32528: Make asyncio.CancelledError a BaseException. (GH-13528)Yury Selivanov2019-05-271-0/+8
| | | | | | | | | | | | | | | This will address the common mistake many asyncio users make: an "except Exception" clause breaking Tasks cancellation. In addition to this change, we stop inheriting asyncio.TimeoutError and asyncio.InvalidStateError from their concurrent.futures.* counterparts. There's no point for these exceptions to share the inheritance chain. In 3.9 we'll focus on implementing supervisors and cancel scopes, which should allow better handling of all exceptions, including SystemExit and KeyboardInterrupt
* bpo-37028: asyncio REPL; activated via 'python -m asyncio'. (GH-13472)Yury Selivanov2019-05-271-0/+1
| | | | | This makes it easy to play with asyncio APIs with simply using async/await in the REPL.
* bpo-36772 Allow lru_cache to be used as decorator without making a function ↵Raymond Hettinger2019-05-261-0/+2
| | | | call (GH-13048)
* bpo-37053: handle strings like u"bar" correctly in Tools/parser/unparse.py ↵Chih-Hsuan Yen2019-05-261-0/+1
| | | | | | | | | | | | (GH-13583) Constant.kind is added in https://bugs.python.org/issue36280. Current possible values for Constant.kind are "u" or None. For r'bar' and b'bar', Constant.kind value is None, so there's no need for special handling. https://bugs.python.org/issue37053
* bpo-36785: PEP 574 implementation (GH-7076)Antoine Pitrou2019-05-261-0/+1
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* bpo-28866: No type cache for types with specialized mro, invalidation is ↵Julien Palard2019-05-261-0/+2
| | | | | | | | | | | | | | | | | | hard. (#13157) * No type cache for types with specialized mro, invalidation is hard. * FIX: Don't disable method cache custom types that do not implement mro(). * fixing implem. * Avoid storing error flags, also decref. * news entry * Clear as soon as we're getting an error. * FIX: Reference leak.
* bpo-37049: PEP 589: Add TypedDict to typing module (GH-13573)Ivan Levkivskyi2019-05-261-0/+1
| | | | The implementation is straightforward and essentially is just copied from `typing_extensions`.
* bpo-37046: PEP 586: Add Literal to typing module (#13572)Ivan Levkivskyi2019-05-261-0/+1
| | | | The implementation is straightforward and essentially is just copied from `typing_extensions`.
* bpo-37045: PEP 591: Add final qualifiers to typing module (GH-13571)Ivan Levkivskyi2019-05-261-0/+1
| | | | The implementation is straightforward, it just mimics `ClassVar` (since the latter is also a name/access qualifier, not really a type). Also it is essentially copied from `typing_extensions`.
* bpo-37017: PyObject_CallMethodObjArgs uses LOAD_METHOD optimization (GH-13516)Michael J. Sullivan2019-05-261-0/+4
| | | | | | | | | Update PyObject_CallMethodObjArgs and _PyObject_CallMethodIdObjArgs to use _PyObject_GetMethod to avoid creating a bound method object in many cases. On a microbenchmark of PyObject_CallMethodObjArgs calling a method on an interpreted Python class, this optimization resulted in a 1.7x speedup.
* bpo-37038: Make idlelib.run runnable; add test clause (GH-13560)Terry Jan Reedy2019-05-251-0/+1
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* bpo-34632: Add importlib.metadata (GH-12547)Jason R. Coombs2019-05-241-0/+1
| | | Add importlib.metadata module as forward port of the standalone importlib_metadata.
* bpo-37032: Add CodeType.replace() method (GH-13542)Victor Stinner2019-05-241-0/+1
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* bpo-35907: Fix typo in the NEWS entry (GH-13559)Victor Stinner2019-05-241-1/+1
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* bpo-36969: Make PDB args command display positional only arguments (GH-13459)Rémi Lapeyre2019-05-241-0/+2
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* bpo-35907: Clarify the NEWS entry (GH-13523)Victor Stinner2019-05-241-2/+3
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* bpo-8138: Initialize wsgiref's SimpleServer as single-threaded (GH-12977)Berker Peksag2019-05-241-0/+2
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* bpo-21536: On Cygwin, C extensions must be linked with libpython (GH-13549)E. M. Bray2019-05-241-1/+2
| | | | | | | | | | It is also possible to link against a library or executable with a statically linked libpython, but not both with the same DLL. In fact building a statically linked python is currently broken on Cygwin for other (related) reasons. The same problem applies to other POSIX-like layers over Windows (MinGW, MSYS) but Python's build system does not seem to attempt to support those platforms at the moment.
* bpo-36045: builtins.help() now prefixes `async` for async functions (GH-12010)Dan Rose2019-05-241-0/+1
| | | | | | Previously, it was hard to tell whether a function should be awaited. It was also incorrect (per PEP 484) to put this in the type hint for coroutine functions. Added this info to the output of builtins.help and pydoc. https://bugs.python.org/issue36045
* bpo-20285: Improve help docs for object (GH-4759)Cheryl Sabella2019-05-241-0/+3
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* bpo-23395: Fix PyErr_SetInterrupt if the SIGINT signal is ignored or not ↵Matěj Cepl2019-05-232-1/+3
| | | | | handled (GH-7778) ``_thread.interrupt_main()`` now avoids setting the Python error status if the ``SIGINT`` signal is ignored or not handled by Python.
* bpo-36842: Implement PEP 578 (GH-12613)Steve Dower2019-05-231-0/+1
| | | Adds sys.audit, sys.addaudithook, io.open_code, and associated C APIs.
* bpo-37008: make mock_open handle able to honor next() (GH-13492)Damien Nadé2019-05-231-0/+2
| | | | | | | | I've reported the issue on https://bugs.python.org/issue37008 and now I'm trying to bring a solution to this minor issue. I think it could be trivially backported to 3.7 branch. https://bugs.python.org/issue37008
* bpo-33164: update blake2 implementation (GH-6286)David Carlier2019-05-231-0/+1
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* bpo-36721: Add --embed option to python-config (GH-13500)Victor Stinner2019-05-235-6/+50
| | | | | | | | | | | | | | | | | | | | | To embed Python into an application, a new --embed option must be passed to "python3-config --libs --embed" to get "-lpython3.8" (link the application to libpython). To support both 3.8 and older, try "python3-config --libs --embed" first and fallback to "python3-config --libs" (without --embed) if the previous command fails. Add a pkg-config "python-3.8-embed" module to embed Python into an application: "pkg-config python-3.8-embed --libs" includes "-lpython3.8". To support both 3.8 and older, try "pkg-config python-X.Y-embed --libs" first and fallback to "pkg-config python-X.Y --libs" (without --embed) if the previous command fails (replace "X.Y" with the Python version). On the other hand, "pkg-config python3.8 --libs" no longer contains "-lpython3.8". C extensions must not be linked to libpython (except on Android, case handled by the script); this change is backward incompatible on purpose. "make install" now also installs "python-3.8-embed.pc".
* bpo-27737: Allow whitespace only headers encoding (#13478)Batuhan Taşkaya2019-05-231-0/+2
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* bpo-36829: PyErr_WriteUnraisable() normalizes exception (GH-13507)Victor Stinner2019-05-221-0/+4
| | | | | | PyErr_WriteUnraisable() now creates a traceback object if there is no current traceback. Moreover, call PyErr_NormalizeException() and PyException_SetTraceback() to normalize the exception value. Ignore silently any error.
* bpo-36829: Add test.support.catch_unraisable_exception() (GH-13490)Victor Stinner2019-05-221-0/+2
| | | | | | * Copy test_exceptions.test_unraisable() to test_sys.UnraisableHookTest(). * Use catch_unraisable_exception() in test_coroutines, test_exceptions, test_generators.
* bpo-24882: Let ThreadPoolExecutor reuse idle threads before creating new ↵Sean2019-05-221-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | thread (#6375) * Fixes issue 24882 * Add news file entry for change. * Change test_concurrent_futures.ThreadPoolShutdownTest Adjust the shutdown test so that, after submitting three jobs to the executor, the test checks for less than three threads, instead of looking for exactly three threads. If idle threads are being recycled properly, then we should have less than three threads. * Switched idle count to semaphor, Updated tests As suggested by reviewer tomMoral, swapped lock-protected counter with a semaphore to track the number of unused threads. Adjusted test_threads_terminate to wait for completiton of the previous future before submitting a new one (and checking the number of threads used). Also added a new test to confirm the thread pool can be saturated. * Updates tests as requested by pitrou. * Correct minor whitespace error. * Make test_saturation faster
* bpo-33110: Catch errors raised when running add_done_callback on already ↵Sam Martin2019-05-221-0/+1
| | | | | | completed futures (GH-13141) Wrap the callback call within the `add_done_callback` function within concurrent.futures, in order to behave in an identical manner to callbacks added to a running future are triggered once it has completed.
* bpo-36878: Only allow text after `# type: ignore` if first character ASCII ↵Michael J. Sullivan2019-05-221-0/+2
| | | | | | | | | | | (GH-13504) This disallows things like `# type: ignoreé`, which seems wrong. Also switch to using Py_ISALNUM for the alnum check, for consistency with other code (and maybe correctness re: locale issues?). https://bugs.python.org/issue36878
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