3.7.0b5 - Cpython — ContextQMD

.. bpo: 33622 .. date: 2018-05-23-20-46-14 .. nonce: xPucO9 .. release date: 2018-05-30 .. 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: 33509 .. date: 2018-05-14-17-31-02 .. nonce: pIUfTd .. section: Core and Builtins

Fix module_globals parameter of warnings.warn_explicit(): don't crash if module_globals is not a dict.

.. bpo: 20104 .. date: 2018-05-14-11-34-55 .. nonce: kqBNzv .. section: Core and Builtins

The new os.posix_spawn added in 3.7.0b1 was removed as we are still working on what the API should look like. Expect this in 3.8 instead.

.. bpo: 33475 .. date: 2018-05-13-01-26-18 .. nonce: rI0y1U .. section: Core and Builtins

Fixed miscellaneous bugs in converting annotations to strings and optimized parentheses in the string representation.

.. 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: 32911 .. date: 2018-02-27-20-57-00 .. nonce: cmKfco .. section: Core and Builtins

Due to unexpected compatibility issues discovered during downstream beta testing, reverted :issue:29463. docstring field is removed from Module, ClassDef, FunctionDef, and AsyncFunctionDef ast nodes which was added in 3.7a1. Docstring expression is restored as a first statement in their body. Based on patch by Inada Naoki.

.. 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: 32751 .. date: 2018-05-29-15-32-18 .. nonce: oBTqr7 .. section: Library

When cancelling the task due to a timeout, :meth:asyncio.wait_for will now wait until the cancellation is complete.

.. 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: 33654 .. date: 2018-05-29-01-13-39 .. nonce: sa81Si .. section: Library

Support protocol type switching in SSLTransport.set_protocol().

.. bpo: 33674 .. date: 2018-05-29-00-37-56 .. nonce: 2IkGhL .. section: Library

Pause the transport as early as possible to further reduce the risk of data_received() being called before connection_made().

.. 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: 32610 .. date: 2018-05-28-16-40-32 .. nonce: KvUAsL .. section: Library

Make asyncio.all_tasks() return only pending tasks.

.. bpo: 32410 .. date: 2018-05-28-16-19-35 .. nonce: Z1DZaF .. section: Library

Avoid blocking on file IO in sendfile fallback code

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

Fix RuntimeError after closing loop that used run_in_executor

.. bpo: 33672 .. date: 2018-05-28-12-29-54 .. nonce: GM_Xm_ .. section: Library

Fix Task.repr crash with Cython's bogus coroutines

.. bpo: 33654 .. date: 2018-05-26-13-09-34 .. nonce: IbYWxA .. section: Library

Fix transport.set_protocol() to support switching between asyncio.Protocol and asyncio.BufferedProtocol. Fix loop.start_tls() to work with asyncio.BufferedProtocols.

.. bpo: 33652 .. date: 2018-05-26-10-13-59 .. nonce: humFJ1 .. section: Library

Pickles of type variables and subscripted generics are now future-proof and compatible with older Python versions.

.. bpo: 32493 .. date: 2018-05-24-17-41-36 .. nonce: 5tAoAu .. section: Library

Fixed :func:uuid.uuid1 on FreeBSD.

.. bpo: 33618 .. date: 2018-05-23-20-14-34 .. nonce: xU39lr .. section: Library

Finalize and document preliminary and experimental TLS 1.3 support with OpenSSL 1.1.1

.. bpo: 33623 .. date: 2018-05-23-14-58-05 .. nonce: wAw1cF .. section: Library

Fix possible SIGSGV when asyncio.Future is created in del

.. 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: 33570 .. date: 2018-05-18-21-50-47 .. nonce: 7CZy4t .. section: Library

Change TLS 1.3 cipher suite settings for compatibility with OpenSSL 1.1.1-pre6 and newer. OpenSSL 1.1.1 will have TLS 1.3 ciphers enabled by default.

.. bpo: 28556 .. date: 2018-05-17-22-53-08 .. nonce: C6Hnd1 .. section: Library

Do not simplify arguments to typing.Union. Now Union[Manager, Employee] is not simplified to Employee at runtime. Such simplification previously caused several bugs and limited possibilities for introspection.

.. bpo: 33540 .. date: 2018-05-16-18-10-38 .. nonce: wy9LRV .. section: Library

Add a new block_on_close class attribute to ForkingMixIn and ThreadingMixIn classes of :mod:socketserver.

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

tempfile._candidate_tempdir_list should consider common TEMP locations

.. bpo: 33109 .. date: 2018-05-16-14-57-58 .. nonce: nPLL_S .. section: Library

argparse subparsers are once again not required by default, reverting the change in behavior introduced by bpo-26510 in 3.7.0a2.

.. bpo: 33536 .. date: 2018-05-16-10-07-40 .. nonce: _s0TE8 .. section: Library

dataclasses.make_dataclass now checks for invalid field names and duplicate fields. Also, added a check for invalid field specifications.

.. 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: 0 .. date: 2018-05-15-18-02-03 .. nonce: pj2Mbb .. section: Library

Fix failure in typing.get_type_hints() when ClassVar was provided as a string forward reference.

.. bpo: 33505 .. date: 2018-05-14-18-05-35 .. nonce: L8pAyt .. section: Library

Optimize asyncio.ensure_future() by reordering if checks: 1.17x faster.

.. bpo: 33497 .. date: 2018-05-14-17-49-34 .. nonce: wWT6XM .. section: Library

Add errors param to cgi.parse_multipart and make an encoding in FieldStorage use the given errors (needed for Twisted). Patch by Amber Brown.

.. bpo: 33495 .. date: 2018-05-14-10-29-03 .. nonce: TeGTQJ .. section: Library

Change dataclasses.Fields repr to use the repr of each of its members, instead of str. This makes it more clear what each field actually represents. This is especially true for the 'type' member.

.. bpo: 33453 .. date: 2018-05-12-06-01-02 .. nonce: Fj-jMD .. section: Library

Fix dataclasses to work if using literal string type annotations or if using PEP 563 "Postponed Evaluation of Annotations". Only specific string prefixes are detected for both ClassVar ("ClassVar" and "typing.ClassVar") and InitVar ("InitVar" and "dataclasses.InitVar").

.. bpo: 28556 .. date: 2018-05-08-16-43-42 .. nonce: _xr5mp .. 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: 28167 .. date: 2018-05-02-07-26-29 .. nonce: 7FwDfN .. section: Library

The function platform.linux_distribution and platform.dist now trigger a DeprecationWarning and have been marked for removal in Python 3.8

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

Fix FD leak in _SelectorSocketTransport Patch by Vlad Starostin.

.. 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: 32257 .. date: 2018-02-26-09-08-07 .. nonce: 6ElnUt .. section: Library

The ssl module now contains OP_NO_RENEGOTIATION constant, available with OpenSSL 1.1.0h or 1.1.1.

.. 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: 23859 .. date: 2018-05-29-16-02-31 .. nonce: E5gba1 .. section: Documentation

Document that asyncio.wait() does not cancel its futures on timeout.

.. bpo: 32436 .. date: 2018-05-23-11-59-51 .. nonce: S1LGPa .. section: Documentation

Document :pep:567 changes to asyncio.

.. bpo: 33604 .. date: 2018-05-22-11-47-14 .. nonce: 5YHTpz .. section: Documentation

Update HMAC md5 default to a DeprecationWarning, bump removal to 3.8.

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

Fix broken pypi link

.. bpo: 33421 .. date: 2018-05-14-15-15-41 .. nonce: 3GU_QO .. section: Documentation

Add missing documentation for typing.AsyncContextManager.

.. 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: 32604 .. date: 2018-05-14-13-32-46 .. nonce: a_z6D_ .. section: Tests

Remove the _xxsubinterpreters module (meant for testing) and associated helpers. This module was originally added recently in 3.7b1.

.. 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: 13631 .. date: 2018-05-16-13-25-58 .. nonce: UIjDyY .. section: macOS

The .editrc file in user's home directory is now processed correctly during the readline initialization through editline emulation on macOS.

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

Add docstrings and tests for codecontext.