- Issue #25895: Enable WebSocket URL schemes in urllib.parse.urljoin.
Patch by Gergely Imreh and Markus Holtermann.
+- Issue #28114: Fix a crash in parse_envlist() when env contains byte strings.
+ Patch by Eryk Sun.
+
- Issue #27599: Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp().
-- Issue #19003:m email.generator now replaces only \r and/or \n line
- endings, per the RFC, instead of all unicode line endings.
+- Issue #27906: Fix socket accept exhaustion during high TCP traffic.
+ Patch by Kevin Conway.
-- Issue #28019: itertools.count() no longer rounds non-integer step in range
- between 1.0 and 2.0 to 1.
+- Issue #28174: Handle when SO_REUSEPORT isn't properly supported.
+ Patch by Seth Michael Larson.
-- Issue #25969: Update the lib2to3 grammar to handle the unpacking
- generalizations added in 3.5.
+- Issue #26654: Inspect functools.partial in asyncio.Handle.__repr__.
+ Patch by iceboy.
-- Issue #14977: mailcap now respects the order of the lines in the mailcap
- files ("first match"), as required by RFC 1542. Patch by Michael Lazar.
+- Issue #26909: Fix slow pipes IO in asyncio.
+ Patch by INADA Naoki.
-- Issue #24594: Validates persist parameter when opening MSI database
+- Issue #28176: Fix callbacks race in asyncio.SelectorLoop.sock_connect.
-- Issue #17582: xml.etree.ElementTree nows preserves whitespaces in attributes
- (Patch by Duane Griffin. Reviewed and approved by Stefan Behnel.)
+- Issue #27759: Fix selectors incorrectly retain invalid file descriptors.
+ Patch by Mark Williams.
-- Issue #28047: Fixed calculation of line length used for the base64 CTE
- in the new email policies.
+- Issue #28368: Refuse monitoring processes if the child watcher has no
+ loop attached.
+ Patch by Vincent Michel.
-- Issue #27445: Don't pass str(_charset) to MIMEText.set_payload().
- Patch by Claude Paroz.
+- Issue #28369: Raise RuntimeError when transport's FD is used with
+ add_reader, add_writer, etc.
-- Issue #22450: urllib now includes an "Accept: */*" header among the
- default headers. This makes the results of REST API requests more
- consistent and predictable especially when proxy servers are involved.
+- Issue #28370: Speedup asyncio.StreamReader.readexactly.
+ Patch by Коренберг Марк.
-- lib2to3.pgen3.driver.load_grammar() now creates a stable cache file
- between runs given the same Grammar.txt input regardless of the hash
- randomization setting.
+- Issue #28371: Deprecate passing asyncio.Handles to run_in_executor.
-- Issue #27570: Avoid zero-length memcpy() etc calls with null source
- pointers in the "ctypes" and "array" modules.
+- Issue #28372: Fix asyncio to support formatting of non-python coroutines.
-- Issue #22233: Break email header lines *only* on the RFC specified CR and LF
- characters, not on arbitrary unicode line breaks. This also fixes a bug in
+- Issue #28399: Remove UNIX socket from FS before binding.
+ Patch by Коренберг Марк.
+
+- Issue #27972: Prohibit Tasks to await on themselves.
+
+Windows
+-------
+
+- Issue #28402: Adds signed catalog files for stdlib on Windows.
+
+- Issue #28333: Enables Unicode for ps1/ps2 and input() prompts. (Patch by
+ Eryk Sun)
+
+- Issue #28251: Improvements to help manuals on Windows.
+
+- Issue #28110: launcher.msi has different product codes between 32-bit and
+ 64-bit
+
+- Issue #28161: Opening CON for write access fails
+
+- Issue #28162: WindowsConsoleIO readall() fails if first line starts with
+ Ctrl+Z
+
+- Issue #28163: WindowsConsoleIO fileno() passes wrong flags to
+ _open_osfhandle
+
+- Issue #28164: _PyIO_get_console_type fails for various paths
+
+- Issue #28137: Renames Windows path file to ._pth
+
+- Issue #28138: Windows ._pth file should allow import site
+
+C API
+-----
+
+- Issue #28426: Deprecated undocumented functions PyUnicode_AsEncodedObject(),
+ PyUnicode_AsDecodedObject(), PyUnicode_AsDecodedUnicode() and
+ PyUnicode_AsEncodedUnicode().
+
+Build
+-----
+
+- Issue #28258: Fixed build with Estonian locale (python-config and distclean
+ targets in Makefile). Patch by Arfrever Frehtes Taifersar Arahesis.
+
+- Issue #26661: setup.py now detects system libffi with multiarch wrapper.
+
+- Issue #15819: Remove redundant include search directory option for building
+ outside the source tree.
+
+Tests
+-----
+
+- Issue #28217: Adds _testconsole module to test console input.
+
+
+What's New in Python 3.6.0 beta 1
+=================================
+
+*Release date: 2016-09-12*
+
+Core and Builtins
+-----------------
+
+- Issue #23722: The __class__ cell used by zero-argument super() is now
+ initialized from type.__new__ rather than __build_class__, so class methods
+ relying on that will now work correctly when called from metaclass methods
+ during class creation. Patch by Martin Teichmann.
+
+- Issue #25221: Fix corrupted result from PyLong_FromLong(0) when Python
+ is compiled with NSMALLPOSINTS = 0.
+
+- Issue #27080: Implement formatting support for PEP 515. Initial patch
+ by Chris Angelico.
+
+- Issue #27199: In tarfile, expose copyfileobj bufsize to improve throughput.
+ Patch by Jason Fried.
+
+- Issue #27948: In f-strings, only allow backslashes inside the braces
+ (where the expressions are). This is a breaking change from the 3.6
+ alpha releases, where backslashes are allowed anywhere in an
+ f-string. Also, require that expressions inside f-strings be
+ enclosed within literal braces, and not escapes like
+ f'\x7b"hi"\x7d'.
+
+- Issue #28046: Remove platform-specific directories from sys.path.
+
+- Issue #28071: Add early-out for differencing from an empty set.
+
+- Issue #25758: Prevents zipimport from unnecessarily encoding a filename
+ (patch by Eryk Sun)
+
+- Issue #25856: The __module__ attribute of extension classes and functions
+ now is interned. This leads to more compact pickle data with protocol 4.
+
+- Issue #27213: Rework CALL_FUNCTION* opcodes to produce shorter and more
+ efficient bytecode. Patch by Demur Rumed, design by Serhiy Storchaka,
+ reviewed by Serhiy Storchaka and Victor Stinner.
+
+- Issue #26331: Implement tokenizing support for PEP 515. Patch by Georg Brandl.
+
+- Issue #27999: Make "global after use" a SyntaxError, and ditto for nonlocal.
+ Patch by Ivan Levkivskyi.
+
+- Issue #28003: Implement PEP 525 -- Asynchronous Generators.
+
+- Issue #27985: Implement PEP 526 -- Syntax for Variable Annotations.
+ Patch by Ivan Levkivskyi.
+
+- Issue #26058: Add a new private version to the builtin dict type, incremented
+ at each dictionary creation and at each dictionary change. Implementation of
+ the PEP 509.
+
+- Issue #27364: A backslash-character pair that is not a valid escape sequence
+ now generates a DeprecationWarning. Patch by Emanuel Barry.
+
+- Issue #27350: `dict` implementation is changed like PyPy. It is more compact
+ and preserves insertion order.
+ (Concept developed by Raymond Hettinger and patch by Inada Naoki.)
+
+- Issue #27911: Remove unnecessary error checks in
+ ``exec_builtin_or_dynamic()``.
+
+- Issue #27078: Added BUILD_STRING opcode. Optimized f-strings evaluation.
+
+- Issue #17884: Python now requires systems with inttypes.h and stdint.h
+
+- Issue #27961: Require platforms to support ``long long``. Python hasn't
+ compiled without ``long long`` for years, so this is basically a formality.
+
+- Issue #27355: Removed support for Windows CE. It was never finished,
+ and Windows CE is no longer a relevant platform for Python.
+
+- Implement PEP 523.
+
+- Issue #27870: A left shift of zero by a large integer no longer attempts
+ to allocate large amounts of memory.
+
+- Issue #25402: In int-to-decimal-string conversion, improve the estimate
+ of the intermediate memory required, and remove an unnecessarily strict
+ overflow check. Patch by Serhiy Storchaka.
+
+- Issue #27214: In long_invert, be more careful about modifying object
+ returned by long_add, and remove an unnecessary check for small longs.
+ Thanks Oren Milman for analysis and patch.
+
+- Issue #27506: Support passing the bytes/bytearray.translate() "delete"
+ argument by keyword.
+
+- Issue #27812: Properly clear out a generator's frame's backreference to the
+ generator to prevent crashes in frame.clear().
+
+- Issue #27811: Fix a crash when a coroutine that has not been awaited is
+ finalized with warnings-as-errors enabled.
+
+- Issue #27587: Fix another issue found by PVS-Studio: Null pointer check
+ after use of 'def' in _PyState_AddModule().
+ Initial patch by Christian Heimes.
+
+- Issue #27792: The modulo operation applied to ``bool`` and other
+ ``int`` subclasses now always returns an ``int``. Previously
+ the return type depended on the input values. Patch by Xiang Zhang.
+
+- Issue #26984: int() now always returns an instance of exact int.
+
+- Issue #25604: Fix a minor bug in integer true division; this bug could
+ potentially have caused off-by-one-ulp results on platforms with
+ unreliable ldexp implementations.
+
+- Issue #24254: Make class definition namespace ordered by default.
+
+- Issue #27662: Fix an overflow check in ``List_New``: the original code was
+ checking against ``Py_SIZE_MAX`` instead of the correct upper bound of
+ ``Py_SSIZE_T_MAX``. Patch by Xiang Zhang.
+
+- Issue #27782: Multi-phase extension module import now correctly allows the
+ ``m_methods`` field to be used to add module level functions to instances
+ of non-module types returned from ``Py_create_mod``. Patch by Xiang Zhang.
+
+- Issue #27936: The round() function accepted a second None argument
+ for some types but not for others. Fixed the inconsistency by
+ accepting None for all numeric types.
+
+- Issue #27487: Warn if a submodule argument to "python -m" or
+ runpy.run_module() is found in sys.modules after parent packages are
+ imported, but before the submodule is executed.
+
+- Issue #27157: Make only type() itself accept the one-argument form.
+ Patch by Eryk Sun and Emanuel Barry.
+
+- Issue #27558: Fix a SystemError in the implementation of "raise" statement.
+ In a brand new thread, raise a RuntimeError since there is no active
+ exception to reraise. Patch written by Xiang Zhang.
+
+- Issue #28008: Implement PEP 530 -- asynchronous comprehensions.
+
+- Issue #27942: Fix memory leak in codeobject.c
+
+Library
+-------
+
++- Issue #28732: Fix crash in os.spawnv() with no elements in args
++
+- Issue #28485: Always raise ValueError for negative
+ compileall.compile_dir(workers=...) parameter, even when multithreading is
+ unavailable.
+
+- Issue #28037: Use sqlite3_get_autocommit() instead of setting
+ Connection->inTransaction manually.
+
+- Issue #25283: Attributes tm_gmtoff and tm_zone are now available on
+ all platforms in the return values of time.localtime() and
+ time.gmtime().
+
+- Issue #24454: Regular expression match object groups are now
+ accessible using __getitem__. "mo[x]" is equivalent to
+ "mo.group(x)".
+
+- Issue #10740: sqlite3 no longer implicitly commit an open transaction
+ before DDL statements.
+
+- Issue #17941: Add a *module* parameter to collections.namedtuple().
+
+- Issue #22493: Inline flags now should be used only at the start of the
+ regular expression. Deprecation warning is emitted if uses them in the
+ middle of the regular expression.
+
+- Issue #26885: xmlrpc now supports unmarshalling additional data types used
+ by Apache XML-RPC implementation for numerics and None.
+
+- Issue #28070: Fixed parsing inline verbose flag in regular expressions.
+
+- Issue #19500: Add client-side SSL session resumption to the ssl module.
+
+- Issue #28022: Deprecate ssl-related arguments in favor of SSLContext. The
+ deprecation include manual creation of SSLSocket and certfile/keyfile
+ (or similar) in ftplib, httplib, imaplib, smtplib, poplib and urllib.
+
+- Issue #28043: SSLContext has improved default settings: OP_NO_SSLv2,
+ OP_NO_SSLv3, OP_NO_COMPRESSION, OP_CIPHER_SERVER_PREFERENCE,
+ OP_SINGLE_DH_USE, OP_SINGLE_ECDH_USE and HIGH ciphers without MD5.
+
+- Issue #24693: Changed some RuntimeError's in the zipfile module to more
+ appropriate types. Improved some error messages and debugging output.
+
+- Issue #17909: ``json.load`` and ``json.loads`` now support binary input
+ encoded as UTF-8, UTF-16 or UTF-32. Patch by Serhiy Storchaka.
+
+- Issue #27137: the pure Python fallback implementation of ``functools.partial``
+ now matches the behaviour of its accelerated C counterpart for subclassing,
+ pickling and text representation purposes. Patch by Emanuel Barry and
+ Serhiy Storchaka.
+
+- Fix possible integer overflows and crashes in the mmap module with unusual
+ usage patterns.
+
+- Issue #1703178: Fix the ability to pass the --link-objects option to the
+ distutils build_ext command.
+
+- Issue #28019: itertools.count() no longer rounds non-integer step in range
+ between 1.0 and 2.0 to 1.
+
+- Issue #18401: Pdb now supports the 'readrc' keyword argument to control
+ whether .pdbrc files should be read. Patch by Martin Matusiak and
+ Sam Kimbrel.
+
+- Issue #25969: Update the lib2to3 grammar to handle the unpacking
+ generalizations added in 3.5.
+
+- Issue #14977: mailcap now respects the order of the lines in the mailcap
+ files ("first match"), as required by RFC 1542. Patch by Michael Lazar.
+
+- Issue #28025: Convert all ssl module constants to IntEnum and IntFlags.
+ SSLContext properties now return flags and enums.
+
+- Issue #433028: Added support of modifier spans in regular expressions.
+
+- Issue #24594: Validates persist parameter when opening MSI database
+
+- Issue #17582: xml.etree.ElementTree nows preserves whitespaces in attributes
+ (Patch by Duane Griffin. Reviewed and approved by Stefan Behnel.)
+
+- Issue #28047: Fixed calculation of line length used for the base64 CTE
+ in the new email policies.
+
+- Issue #27576: Fix call order in OrderedDict.__init__().
+
+- email.generator.DecodedGenerator now supports the policy keyword.
+
+- Issue #28027: Remove undocumented modules from ``Lib/plat-*``: IN, CDROM,
+ DLFCN, TYPES, CDIO, and STROPTS.
+
+- Issue #27445: Don't pass str(_charset) to MIMEText.set_payload().
+ Patch by Claude Paroz.
+
+- Issue #24277: The new email API is no longer provisional, and the docs
+ have been reorganized and rewritten to emphasize the new API.
+
+- Issue #22450: urllib now includes an "Accept: */*" header among the
+ default headers. This makes the results of REST API requests more
+ consistent and predictable especially when proxy servers are involved.
+
+- lib2to3.pgen3.driver.load_grammar() now creates a stable cache file
+ between runs given the same Grammar.txt input regardless of the hash
+ randomization setting.
+
+- Issue #28005: Allow ImportErrors in encoding implementation to propagate.
+
+- Issue #26667: Support path-like objects in importlib.util.
+
+- Issue #27570: Avoid zero-length memcpy() etc calls with null source
+ pointers in the "ctypes" and "array" modules.
+
+- Issue #22233: Break email header lines *only* on the RFC specified CR and LF
+ characters, not on arbitrary unicode line breaks. This also fixes a bug in
HTTP header parsing.
+- Issue 27331: The email.mime classes now all accept an optional policy keyword.
+
- Issue 27988: Fix email iter_attachments incorrect mutation of payload list.
+- Issue #16113: Add SHA-3 and SHAKE support to hashlib module.
+
+- Eliminate a tautological-pointer-compare warning in _scproxy.c.
+
+- Issue #27776: The :func:`os.urandom` function does now block on Linux 3.17
+ and newer until the system urandom entropy pool is initialized to increase
+ the security. This change is part of the :pep:`524`.
+
+- Issue #27778: Expose the Linux ``getrandom()`` syscall as a new
+ :func:`os.getrandom` function. This change is part of the :pep:`524`.
+
- Issue #27691: Fix ssl module's parsing of GEN_RID subject alternative name
fields in X.509 certs.
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