3.6.6rc1 - Cpython — ContextQMD

.. bpo: 33786 .. date: 2018-06-06-23-24-40 .. nonce: lBvT8z .. release date: 2018-06-11 .. section: Core and Builtins

Fix asynchronous generators to handle GeneratorExit in athrow() correctly

.. bpo: 30654 .. date: 2018-05-28-12-28-53 .. nonce: 9fDJye .. section: Core and Builtins

Fixed reset of the SIGINT handler to SIG_DFL on interpreter shutdown even when there was a custom handler set previously. Patch by Philipp Kerling.

.. bpo: 33622 .. date: 2018-05-23-20-46-14 .. nonce: xPucO9 .. section: Core and Builtins

Fixed a leak when the garbage collector fails to add an object with the __del__ method or referenced by it into the :data:gc.garbage list. :c:func:PyGC_Collect can now be called when an exception is set and preserves it.

.. bpo: 31849 .. date: 2018-05-14-11-00-00 .. nonce: EmHaH4 .. section: Core and Builtins

Fix signed/unsigned comparison warning in pyhash.c.

.. bpo: 33391 .. date: 2018-05-02-08-36-03 .. nonce: z4a7rb .. section: Core and Builtins

Fix a leak in set_symmetric_difference().

.. bpo: 28055 .. date: 2018-04-25-20-44-42 .. nonce: f49kfC .. section: Core and Builtins

Fix unaligned accesses in siphash24(). Patch by Rolf Eike Beer.

.. bpo: 33231 .. date: 2018-04-05-22-20-44 .. nonce: 3Jmo0q .. section: Core and Builtins

Fix potential memory leak in normalizestring().

.. bpo: 29922 .. date: 2018-04-03-00-30-25 .. nonce: CdLuMl .. section: Core and Builtins

Improved error messages in 'async with' when __aenter__() or __aexit__() return non-awaitable object.

.. bpo: 33199 .. date: 2018-04-02-09-32-40 .. nonce: TPnxQu .. section: Core and Builtins

Fix ma_version_tag in dict implementation is uninitialized when copying from key-sharing dict.

.. bpo: 33041 .. date: 2018-03-18-13-56-14 .. nonce: XwPhI2 .. section: Core and Builtins

Fixed jumping when the function contains an async for loop.

.. bpo: 32282 .. date: 2017-12-12-14-02-28 .. nonce: xFVMTn .. section: Core and Builtins

Fix an unnecessary ifdef in the include of VersionHelpers.h in socketmodule on Windows.

.. bpo: 21983 .. date: 2017-10-02-21-02-14 .. nonce: UoC319 .. section: Core and Builtins

Fix a crash in ctypes.cast() in case the type argument is a ctypes structured data type. Patch by Eryk Sun and Oren Milman.

.. bpo: 30167 .. date: 2018-06-10-19-29-17 .. nonce: G5EgC5 .. section: Library

Prevent site.main() exception if PYTHONSTARTUP is set. Patch by Steve Weber.

.. bpo: 33812 .. date: 2018-06-10-13-26-02 .. nonce: frGAOr .. section: Library

Datetime instance d with non-None tzinfo, but with d.tzinfo.utcoffset(d) returning None is now treated as naive by the astimezone() method.

.. bpo: 30805 .. date: 2018-06-08-17-34-16 .. nonce: 3qCWa0 .. section: Library

Avoid race condition with debug logging

.. bpo: 33767 .. date: 2018-06-03-22-41-59 .. nonce: 2e82g3 .. section: Library

The concatenation (+) and repetition (*) sequence operations now raise :exc:TypeError instead of :exc:SystemError when performed on :class:mmap.mmap objects. Patch by Zackery Spytz.

.. bpo: 32684 .. date: 2018-05-29-12-51-18 .. nonce: ZEIism .. section: Library

Fix gather to propagate cancellation of itself even with return_exceptions.

.. bpo: 33674 .. date: 2018-05-28-22-49-59 .. nonce: 6LFFj7 .. section: Library

Fix a race condition in SSLProtocol.connection_made() of asyncio.sslproto: start immediately the handshake instead of using call_soon(). Previously, data_received() could be called before the handshake started, causing the handshake to hang or fail.

.. bpo: 31647 .. date: 2018-05-28-18-40-26 .. nonce: s4Fad3 .. section: Library

Fixed bug where calling write_eof() on a _SelectorSocketTransport after it's already closed raises AttributeError.

.. bpo: 33672 .. date: 2018-05-28-17-45-06 .. nonce: GM_Xm_ .. section: Library

Fix Task.repr crash with Cython's bogus coroutines

.. bpo: 33469 .. date: 2018-05-28-15-55-12 .. nonce: hmXBpY .. section: Library

Fix RuntimeError after closing loop that used run_in_executor

.. bpo: 11874 .. date: 2018-05-23-00-26-27 .. nonce: glK5iP .. section: Library

Use a better regex when breaking usage into wrappable parts. Avoids bogus assertion errors from custom metavar strings.

.. bpo: 30877 .. date: 2018-05-22-13-05-12 .. nonce: JZEGjI .. section: Library

Fixed a bug in the Python implementation of the JSON decoder that prevented the cache of parsed strings from clearing after finishing the decoding. Based on patch by c-fos.

.. bpo: 33548 .. date: 2018-05-16-17-05-48 .. nonce: xWslmx .. section: Library

tempfile._candidate_tempdir_list should consider common TEMP locations

.. bpo: 33542 .. date: 2018-05-16-09-30-27 .. nonce: idNAcs .. section: Library

Prevent uuid.get_node from using a DUID instead of a MAC on Windows. Patch by Zvi Effron

.. bpo: 26819 .. date: 2018-05-16-05-24-43 .. nonce: taxbVT .. section: Library

Fix race condition with ReadTransport.resume_reading in Windows proactor event loop.

.. bpo: 28556 .. date: 2018-05-10-14-51-19 .. nonce: y3zK6I .. section: Library

Minor fixes in typing module: add annotations to NamedTuple.__new__, pass *args and **kwds in Generic.__new__. Original PRs by Paulius Šarka and Chad Dombrova.

.. bpo: 20087 .. date: 2018-05-05-18-02-24 .. nonce: lJrvXL .. section: Library

Updated alias mapping with glibc 2.27 supported locales.

.. bpo: 33422 .. date: 2018-05-05-09-53-05 .. nonce: 4FtQ0q .. section: Library

Fix trailing quotation marks getting deleted when looking up byte/string literals on pydoc. Patch by Andrés Delfino.

.. bpo: 33197 .. date: 2018-04-29-23-56-20 .. nonce: dgRLqr .. section: Library

Update error message when constructing invalid inspect.Parameters Patch by Donghee Na.

.. bpo: 33383 .. date: 2018-04-29-11-15-38 .. nonce: g32YWn .. section: Library

Fixed crash in the get() method of the :mod:dbm.ndbm database object when it is called with a single argument.

.. bpo: 33329 .. date: 2018-04-23-13-21-39 .. nonce: lQ-Eod .. section: Library

Fix multiprocessing regression on newer glibcs

.. bpo: 991266 .. date: 2018-04-21-00-24-08 .. nonce: h93TP_ .. section: Library

Fix quoting of the Comment attribute of :class:http.cookies.SimpleCookie.

.. bpo: 33131 .. date: 2018-04-20-10-43-17 .. nonce: L2E977 .. section: Library

Upgrade bundled version of pip to 10.0.1.

.. bpo: 33308 .. date: 2018-04-18-19-12-25 .. nonce: fW75xi .. section: Library

Fixed a crash in the :mod:parser module when converting an ST object to a tree of tuples or lists with line_info=False and col_info=True.

.. bpo: 33263 .. date: 2018-04-11-20-29-19 .. nonce: B56Hc1 .. section: Library

Fix FD leak in _SelectorSocketTransport Patch by Vlad Starostin.

.. bpo: 33256 .. date: 2018-04-10-20-57-14 .. nonce: ndHkqu .. section: Library

Fix display of <module> call in the html produced by cgitb.html(). Patch by Stéphane Blondon.

.. bpo: 33203 .. date: 2018-04-05-11-09-45 .. nonce: Hje9Py .. section: Library

random.Random.choice() now raises IndexError for empty sequences consistently even when called from subclasses without a getrandbits() implementation.

.. bpo: 33224 .. date: 2018-04-04-23-41-30 .. nonce: pyR0jB .. section: Library

Update difflib.mdiff() for :pep:479. Convert an uncaught StopIteration in a generator into a return-statement.

.. bpo: 33209 .. date: 2018-04-03-10-37-13 .. nonce: 9sGWE_ .. section: Library

End framing at the end of C implementation of :func:pickle.Pickler.dump.

.. bpo: 32861 .. date: 2018-04-02-20-44-54 .. nonce: HeBjzN .. section: Library

The urllib.robotparser's __str__ representation now includes wildcard entries and the "Crawl-delay" and "Request-rate" fields. Patch by Michael Lazar.

.. bpo: 33096 .. date: 2018-03-25-13-18-16 .. nonce: ofdbe7 .. section: Library

Allow ttk.Treeview.insert to insert iid that has a false boolean value. Note iid=0 and iid=False would be same. Patch by Garvit Khatri.

.. bpo: 33127 .. date: 2018-03-24-15-08-24 .. nonce: olJmHv .. section: Library

The ssl module now compiles with LibreSSL 2.7.1.

.. bpo: 33021 .. date: 2018-03-12-00-27-56 .. nonce: m19B9T .. section: Library

Release the GIL during fstat() calls, avoiding hang of all threads when calling mmap.mmap(), os.urandom(), and random.seed(). Patch by Nir Soffer.

.. bpo: 27683 .. date: 2018-03-07-22-28-17 .. nonce: 572Rv4 .. section: Library

Fix a regression in :mod:ipaddress that result of :meth:hosts is empty when the network is constructed by a tuple containing an integer mask and only 1 bit left for addresses.

.. bpo: 32844 .. date: 2018-02-28-13-08-00 .. nonce: u8tnAe .. section: Library

Fix wrong redirection of a low descriptor (0 or 1) to stderr in subprocess if another low descriptor is closed.

.. bpo: 31908 .. date: 2017-10-31 .. nonce: g4xh8x .. section: Library

Fix output of cover files for trace module command-line tool. Previously emitted cover files only when --missing option was used. Patch by Michael Selik.

.. bpo: 31457 .. date: 2017-10-18-19-05-17 .. nonce: KlE6r8 .. section: Library

If nested log adapters are used, the inner process() methods are no longer omitted.

.. bpo: 16865 .. date: 2017-09-29-16-40-38 .. nonce: l-f6I_ .. section: Library

Support arrays >=2GiB in :mod:ctypes. Patch by Segev Finer.

.. bpo: 31238 .. date: 2017-08-21-12-31-53 .. nonce: Gg0LRH .. section: Library

pydoc: the stop() method of the private ServerThread class now waits until DocServer.serve_until_quit() completes and then explicitly sets its docserver attribute to None to break a reference cycle.

.. bpo: 33503 .. date: 2018-05-14-20-08-58 .. nonce: Wvt0qg .. section: Documentation

Fix broken pypi link

.. bpo: 33421 .. date: 2018-05-14-15-23-51 .. nonce: 3GU_QO .. section: Documentation

Add missing documentation for typing.AsyncContextManager.

.. bpo: 33378 .. date: 2018-04-29-04-02-18 .. nonce: -anAHN .. section: Documentation

Add Korean language switcher for https://docs.python.org/3/

.. bpo: 33276 .. date: 2018-04-20-14-09-36 .. nonce: rA1z_3 .. section: Documentation

Clarify that the __path__ attribute on modules cannot be just any value.

.. bpo: 33201 .. date: 2018-04-01-21-03-41 .. nonce: aa8Lkl .. section: Documentation

Modernize documentation for writing C extension types.

.. bpo: 33195 .. date: 2018-04-01-14-30-36 .. nonce: dRS-XX .. section: Documentation

Deprecate Py_UNICODE usage in c-api/arg document. Py_UNICODE related APIs are deprecated since Python 3.3, but it is missed in the document.

.. bpo: 33126 .. date: 2018-03-28-17-03-17 .. nonce: 5UGkNv .. section: Documentation

Document PyBuffer_ToContiguous().

.. bpo: 27212 .. date: 2018-03-22-19-23-04 .. nonce: wrE5KR .. section: Documentation

Modify documentation for the :func:islice recipe to consume initial values up to the start index.

.. bpo: 28247 .. date: 2018-03-20-20-11-05 .. nonce: -V-WS- .. section: Documentation

Update :mod:zipapp documentation to describe how to make standalone applications.

.. bpo: 18802 .. date: 2018-03-11-18-53-47 .. nonce: JhAqH3 .. section: Documentation

Documentation changes for ipaddress. Patch by Jon Foster and Berker Peksag.

.. bpo: 27428 .. date: 2018-03-11-00-16-56 .. nonce: B7A8FT .. section: Documentation

Update documentation to clarify that WindowsRegistryFinder implements MetaPathFinder. (Patch by Himanshu Lakhara)

.. bpo: 8243 .. date: 2018-01-13-20-30-53 .. nonce: s98r28 .. section: Documentation

Add a note about curses.addch and curses.addstr exception behavior when writing outside a window, or pad.

.. bpo: 31432 .. date: 2017-09-13-07-14-59 .. nonce: yAY4Z3 .. section: Documentation

Clarify meaning of CERT_NONE, CERT_OPTIONAL, and CERT_REQUIRED flags for ssl.SSLContext.verify_mode.

.. bpo: 33655 .. date: 2018-05-26-16-01-40 .. nonce: Frb4LA .. section: Tests

Ignore test_posix_fallocate failures on BSD platforms that might be due to running on ZFS.

.. bpo: 19417 .. date: 2018-01-08-13-33-47 .. nonce: 2asoXy .. section: Tests

Add test_bdb.py.

.. bpo: 5755 .. date: 2018-06-04-21-34-34 .. nonce: 65GmCj .. section: Build

Move -Wstrict-prototypes option to CFLAGS_NODIST from OPT. This option emitted annoying warnings when building extension modules written in C++.

.. bpo: 33614 .. date: 2018-05-28-11-40-22 .. nonce: 28e0sE .. section: Build

Ensures module definition files for the stable ABI on Windows are correctly regenerated.

.. bpo: 33522 .. date: 2018-05-15-12-44-50 .. nonce: mJoNcA .. section: Build

Enable CI builds on Visual Studio Team Services at https://python.visualstudio.com/cpython

.. bpo: 33012 .. date: 2018-05-10-21-10-01 .. nonce: 5Zfjac .. section: Build

Add -Wno-cast-function-type for gcc 8 for silencing warnings about function casts like casting to PyCFunction in method definition lists.

.. bpo: 33394 .. date: 2018-04-30-17-36-46 .. nonce: _Vdi4t .. section: Build

Enable the verbose build for extension modules, when GNU make is passed macros on the command line.

.. bpo: 33184 .. date: 2018-04-13-11-39-28 .. nonce: aEohx0 .. section: Windows

Update Windows installer to OpenSSL 1.0.2o.

.. bpo: 33184 .. date: 2018-04-07-00-58-50 .. nonce: rMTiqu .. section: macOS

Update macOS installer build to use OpenSSL 1.0.2o.

.. bpo: 33656 .. date: 2018-06-10-17-59-36 .. nonce: 60ZqJS .. section: IDLE

On Windows, add API call saying that tk scales for DPI. On Windows 8.1+ or 10, with DPI compatibility properties of the Python binary unchanged, and a monitor resolution greater than 96 DPI, this should make text and lines sharper. It should otherwise have no effect.

.. bpo: 33768 .. date: 2018-06-04-19-23-11 .. nonce: I_2qpV .. section: IDLE

Clicking on a context line moves that line to the top of the editor window.

.. bpo: 33763 .. date: 2018-06-03-20-12-57 .. nonce: URiFlE .. section: IDLE

IDLE: Use read-only text widget for code context instead of label widget.

.. bpo: 33664 .. date: 2018-06-03-09-13-28 .. nonce: PZzQyL .. section: IDLE

Scroll IDLE editor text by lines. Previously, the mouse wheel and scrollbar slider moved text by a fixed number of pixels, resulting in partial lines at the top of the editor box. The change also applies to the shell and grep output windows, but not to read-only text views.

.. bpo: 33679 .. date: 2018-05-29-07-14-37 .. nonce: MgX_Ui .. section: IDLE

Enable theme-specific color configuration for Code Context. Use the Highlights tab to see the setting for built-in themes or add settings to custom themes.

.. bpo: 33642 .. date: 2018-05-24-20-42-44 .. nonce: J0VQbS .. section: IDLE

Display up to maxlines non-blank lines for Code Context. If there is no current context, show a single blank line.

.. bpo: 33628 .. date: 2018-05-23-19-51-07 .. nonce: sLlFLO .. section: IDLE

IDLE: Cleanup codecontext.py and its test.

.. bpo: 33564 .. date: 2018-05-17-19-41-12 .. nonce: XzHZJe .. section: IDLE

IDLE's code context now recognizes async as a block opener.

.. bpo: 29706 .. date: 2018-05-15-17-01-10 .. nonce: id4H5i .. section: IDLE

IDLE now colors async and await as keywords in 3.6. They become full keywords in 3.7.

.. bpo: 21474 .. date: 2018-04-29-16-13-02 .. nonce: bglg-F .. section: IDLE

Update word/identifier definition from ascii to unicode. In text and entry boxes, this affects selection by double-click, movement left/right by control-left/right, and deletion left/right by control-BACKSPACE/DEL.

.. bpo: 33204 .. date: 2018-04-02-00-28-13 .. nonce: NBsuIv .. section: IDLE

IDLE: consistently color invalid string prefixes. A 'u' string prefix cannot be paired with either 'r' or 'f'. Consistently color as much of the prefix, starting at the right, as is valid. Revise and extend colorizer test.

.. bpo: 32831 .. date: 2018-02-12-08-08-45 .. nonce: srDRvU .. section: IDLE

Add docstrings and tests for codecontext.

.. bpo: 33189 .. date: 2018-04-03-18-10-00 .. nonce: QrXR00 .. section: Tools/Demos

:program:pygettext.py now recognizes only literal strings as docstrings and translatable strings, and rejects bytes literals and f-string expressions.

.. bpo: 31920 .. date: 2018-03-26-18-54-24 .. nonce: u_WKsT .. section: Tools/Demos

Fixed handling directories as arguments in the pygettext script. Based on patch by Oleg Krasnikov.

.. bpo: 29673 .. date: 2018-03-16-17-25-05 .. nonce: m8QtaW .. section: Tools/Demos

Fix pystackv and pystack gdbinit macros.

.. bpo: 32885 .. date: 2018-02-20-12-16-47 .. nonce: dL5x7C .. section: Tools/Demos

Add an -n flag for Tools/scripts/pathfix.py to disable automatic backup creation (files with ~ suffix).

.. bpo: 31583 .. date: 2017-09-26-10-11-21 .. nonce: TM90_H .. section: Tools/Demos

Fix 2to3 for using with --add-suffix option but without --output-dir option for relative path to files in current directory.

.. bpo: 32374 .. date: 2018-01-09-17-03-54 .. nonce: SwwLoz .. section: C API

Document that m_traverse for multi-phase initialized modules can be called with m_state=NULL, and add a sanity check