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Diffstat (limited to 'Misc/NEWS.d/3.8.0b3.rst')
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diff --git a/Misc/NEWS.d/3.8.0b3.rst b/Misc/NEWS.d/3.8.0b3.rst new file mode 100644 index 0000000..5a35160 --- /dev/null +++ b/Misc/NEWS.d/3.8.0b3.rst @@ -0,0 +1,437 @@ +.. bpo: 37461 +.. date: 2019-07-16-08-11-00 +.. nonce: 1Ahz7O +.. release date: 2019-07-29 +.. section: Security + +Fix an inifite loop when parsing specially crafted email headers. Patch by +Abhilash Raj. + +.. + +.. bpo: 37593 +.. date: 2019-07-14-23-57-27 +.. nonce: yHSTwH +.. section: Core and Builtins + +Swap the positions of the *posonlyargs* and *args* parameters in the +constructor of :class:`ast.parameters` nodes. + +.. + +.. bpo: 36974 +.. date: 2019-06-11-12-59-38 +.. nonce: bVYmSA +.. section: Core and Builtins + +Implemented separate vectorcall functions for every calling convention of +builtin functions and methods. This improves performance for calls. + +.. + +.. bpo: 37697 +.. date: 2019-07-28-17-44-21 +.. nonce: 7UV5d0 +.. section: Library + +Syncronize ``importlib.metadata`` with `importlib_metadata 0.19 +<https://gitlab.com/python-devs/importlib_metadata/-/milestones/20>`_, +improving handling of EGG-INFO files and fixing a crash when entry point +names contained colons. + +.. + +.. bpo: 37691 +.. date: 2019-07-26-22-30-01 +.. nonce: 1Li3rx +.. section: Library + +Let math.dist() accept coordinates as sequences (or iterables) rather than +just tuples. + +.. + +.. bpo: 37664 +.. date: 2019-07-24-18-27-44 +.. nonce: o-GYZC +.. section: Library + +Update wheels bundled with ensurepip (pip 19.2.1 and setuptools 41.0.1) + +.. + +.. bpo: 36324 +.. date: 2019-07-19-22-44-41 +.. nonce: 1VjywS +.. section: Library + +Make internal attributes for statistics.NormalDist() private. + +.. + +.. bpo: 37491 +.. date: 2019-07-17-06-54-43 +.. nonce: op0aMs +.. section: Library + +Fix ``IndexError`` when parsing email headers with unexpectedly ending +bare-quoted string value. Patch by Abhilash Raj. + +.. + +.. bpo: 37579 +.. date: 2019-07-13-10-59-43 +.. nonce: B1Tq9i +.. section: Library + +Return :exc:`NotImplemented` in Python implementation of ``__eq__`` for +:class:`~datetime.timedelta` and :class:`~datetime.time` when the other +object being compared is not of the same type to match C implementation. +Patch by Karthikeyan Singaravelan. + +.. + +.. bpo: 21478 +.. date: 2019-07-10-23-07-11 +.. nonce: cCw9rF +.. section: Library + +Record calls to parent when autospecced object is attached to a mock using +:func:`unittest.mock.attach_mock`. Patch by Karthikeyan Singaravelan. + +.. + +.. bpo: 37502 +.. date: 2019-07-08-03-15-04 +.. nonce: qZGC4g +.. section: Library + +pickle.loads() no longer raises TypeError when the buffers argument is set +to None + +.. + +.. bpo: 37520 +.. date: 2019-07-07-21-09-08 +.. nonce: Gg0KD6 +.. section: Library + +Correct behavior for zipfile.Path.parent when the path object identifies a +subdirectory. + +.. + +.. bpo: 18374 +.. date: 2019-07-05-21-46-45 +.. nonce: qgE0H3 +.. section: Library + +Fix the ``.col_offset`` attribute of nested :class:`ast.BinOp` instances +which had a too large value in some situations. + +.. + +.. bpo: 37421 +.. date: 2019-07-03-12-47-52 +.. nonce: gR5hC8 +.. section: Library + +Fix :func:`multiprocessing.util.get_temp_dir` finalizer: clear also the +'tempdir' configuration of the current process, so next call to +``get_temp_dir()`` will create a new temporary directory, rather than +reusing the removed temporary directory. + +.. + +.. bpo: 37481 +.. date: 2019-07-02-13-08-30 +.. nonce: hd5k09 +.. section: Library + +The distutils ``bdist_wininst`` command is deprecated in Python 3.8, use +``bdist_wheel`` (wheel packages) instead. + +.. + +.. bpo: 26967 +.. date: 2019-06-23-12-46-10 +.. nonce: xEuem1 +.. section: Library + +An :class:`~argparse.ArgumentParser` with ``allow_abbrev=False`` no longer +disables grouping of short flags, such as ``-vv``, but only disables +abbreviation of long flags as documented. Patch by Zac Hatfield-Dodds. + +.. + +.. bpo: 37347 +.. date: 2019-06-20-14-23-48 +.. nonce: Gf9yYI +.. section: Library + +:meth:`sqlite3.Connection.create_aggregate`, +:meth:`sqlite3.Connection.create_function`, +:meth:`sqlite3.Connection.set_authorizer`, +:meth:`sqlite3.Connection.set_progress_handler` +:meth:`sqlite3.Connection.set_trace_callback` methods lead to segfaults if +some of these methods are called twice with an equal object but not the +same. Now callbacks are stored more carefully. Patch by Aleksandr Balezin. + +.. + +.. bpo: 36564 +.. date: 2019-04-08-13-00-13 +.. nonce: _n67m_ +.. section: Library + +Fix infinite loop in email header folding logic that would be triggered when +an email policy's max_line_length is not long enough to include the required +markup and any values in the message. Patch by Paul Ganssle + +.. + +.. bpo: 32910 +.. date: 2019-07-25-10-30-32 +.. nonce: caLLAe +.. section: Documentation + +Remove implementation-specific behaviour of how venv's Deactivate works. + +.. + +.. bpo: 37284 +.. date: 2019-07-13-12-58-20 +.. nonce: rP8WpB +.. section: Documentation + +Add a brief note to indicate that any new ``sys.implementation`` required +attributes must go through the PEP process. + +.. + +.. bpo: 30088 +.. date: 2019-07-13-12-43-01 +.. nonce: CIcBjy +.. section: Documentation + +Documented that :class:`mailbox.Maildir` constructor doesn't attempt to +verify the maildir folder layout correctness. Patch by Sviatoslav Sydorenko. + +.. + +.. bpo: 37521 +.. date: 2019-07-12-15-09-56 +.. nonce: 7tiFR- +.. section: Documentation + +Fix `importlib` examples to insert any newly created modules via +importlib.util.module_from_spec() immediately into sys.modules instead of +after calling loader.exec_module(). + +Thanks to Benjamin Mintz for finding the bug. + +.. + +.. bpo: 37456 +.. date: 2019-07-06-17-51-36 +.. nonce: lgAQHn +.. section: Documentation + +Slash ('/') is now part of syntax. + +.. + +.. bpo: 37487 +.. date: 2019-07-06-17-19-26 +.. nonce: QagfZ5 +.. section: Documentation + +Fix PyList_GetItem index description to include 0. + +.. + +.. bpo: 37149 +.. date: 2019-07-06-02-19-02 +.. nonce: NumHn3 +.. section: Documentation + +Replace the dead link to the Tkinter 8.5 reference by John Shipman, New +Mexico Tech, with a link to the archive.org copy. + +.. + +.. bpo: 37478 +.. date: 2019-07-06-00-57-27 +.. nonce: B0ioLw +.. section: Documentation + +Added possible exceptions to the description of os.chdir(). + +.. + +.. bpo: 37558 +.. date: 2019-07-11-10-33-56 +.. nonce: SKHRsL +.. section: Tests + +Fix test_shared_memory_cleaned_after_process_termination name handling + +.. + +.. bpo: 37526 +.. date: 2019-07-09-12-33-18 +.. nonce: vmm5y7 +.. section: Tests + +Add :func:`test.support.catch_threading_exception`: context manager catching +:class:`threading.Thread` exception using :func:`threading.excepthook`. + +.. + +.. bpo: 37421 +.. date: 2019-07-08-10-11-36 +.. nonce: OY77go +.. section: Tests + +test_concurrent_futures now explicitly stops the ForkServer instance if it's +running. + +.. + +.. bpo: 37421 +.. date: 2019-07-05-14-47-55 +.. nonce: n8o2to +.. section: Tests + +multiprocessing tests now stop the ForkServer instance if it's running: +close the "alive" file descriptor to ask the server to stop and then remove +its UNIX address. + +.. + +.. bpo: 36044 +.. date: 2019-07-11-01-28-24 +.. nonce: gIgfiJ +.. section: Build + +Reduce the number of unit tests run for the PGO generation task. This +speeds up the task by a factor of about 15x. Running the full unit test +suite is slow. This change may result in a slightly less optimized build +since not as many code branches will be executed. If you are willing to +wait for the much slower build, the old behavior can be restored using +'./configure [..] PROFILE_TASK="-m test --pgo-extended"'. We make no +guarantees as to which PGO task set produces a faster build. Users who care +should run their own relevant benchmarks as results can depend on the +environment, workload, and compiler tool chain. + +.. + +.. bpo: 37672 +.. date: 2019-07-24-14-36-28 +.. nonce: uKEVHN +.. section: Windows + +Switch Windows Store package's pip to use bundled :file:`pip.ini` instead of +:envvar:`PIP_USER` variable. + +.. + +.. bpo: 37692 +.. date: 2019-07-27-15-14-20 +.. nonce: TRHGjD +.. section: IDLE + +Improve highlight config sample with example shell interaction and better +labels for shell elements. + +.. + +.. bpo: 37628 +.. date: 2019-07-26-17-51-13 +.. nonce: kX4AUF +.. section: IDLE + +Settings dialog no longer expands with font size. + +.. + +.. bpo: 37627 +.. date: 2019-07-20-23-33-53 +.. nonce: dQhUNB +.. section: IDLE + +Initialize the Customize Run dialog with the command line arguments most +recently entered before. The user can optionally edit before submitting +them. + +.. + +.. bpo: 33610 +.. date: 2019-07-18-10-11-36 +.. nonce: xYqMLg +.. section: IDLE + +Fix code context not showing the correct context when first toggled on. + +.. + +.. bpo: 37530 +.. date: 2019-07-11-00-05-31 +.. nonce: AuyCyD +.. section: IDLE + +Optimize code context to reduce unneeded background activity. Font and +highlight changes now occur along with text changes instead of after a +random delay. + +.. + +.. bpo: 27452 +.. date: 2019-07-03-22-47-44 +.. nonce: nePPLi +.. section: IDLE + +Cleanup ``config.py`` by inlining ``RemoveFile`` and simplifying the +handling of ``file`` in ``CreateConfigHandlers``. + +.. + +.. bpo: 17535 +.. date: 2019-06-13-01-07-20 +.. nonce: K8i2St +.. section: IDLE + +Add optional line numbers for IDLE editor windows. Windows open without +line numbers unless set otherwise in the General tab of the configuration +dialog. + +.. + +.. bpo: 26806 +.. date: 2019-06-10-22-48-50 +.. nonce: Zltkum +.. section: IDLE + +To compensate for stack frames added by IDLE and avoid possible problems +with low recursion limits, add 30 to limits in the user code execution +process. Subtract 30 when reporting recursion limits to make this addition +mostly transparent. + +.. + +.. bpo: 36390 +.. date: 2019-03-21-08-35-00 +.. nonce: OdDCGk +.. section: IDLE + +Gather Format menu functions into format.py. Combine paragraph.py, +rstrip.py, and format methods from editor.py. + +.. + +.. bpo: 37675 +.. date: 2019-07-24-16-20-54 +.. nonce: 951Cvf +.. section: Tools/Demos + +2to3 now works when run from a zipped standard library. |