Core and Builtins
-----------------
-Library
--------
+ - Issue #28426: Fixed potential crash in PyUnicode_AsDecodedObject() in debug
+ build.
+
+- Issue #23782: Fixed possible memory leak in _PyTraceback_Add() and exception
+ loss in PyTraceBack_Here().
-- In the curses module, raise an error if window.getstr() or window.instr() is
- passed a negative value.
+- Issue #28379: Added sanity checks and tests for PyUnicode_CopyCharacters().
+ Patch by Xiang Zhang.
-- Issue #27783: Fix possible usage of uninitialized memory in operator.methodcaller.
+- Issue #28376: The type of long range iterator is now registered as Iterator.
+ Patch by Oren Milman.
-- Issue #27774: Fix possible Py_DECREF on unowned object in _sre.
+- Issue #28376: The constructor of range_iterator now checks that step is not 0.
+ Patch by Oren Milman.
-- Issue #27760: Fix possible integer overflow in binascii.b2a_qp.
+- Issue #26906: Resolving special methods of uninitialized type now causes
+ implicit initialization of the type instead of a fail.
-- Issue #27758: Fix possible integer overflow in the _csv module for large record
- lengths.
+- Issue #18287: PyType_Ready() now checks that tp_name is not NULL.
+ Original patch by Niklas Koep.
-- Issue #27568: Prevent HTTPoxy attack (CVE-2016-1000110). Ignore the
- HTTP_PROXY variable when REQUEST_METHOD environment is set, which indicates
- that the script is in CGI mode.
+- Issue #24098: Fixed possible crash when AST is changed in process of
+ compiling it.
-- Issue #27759: Fix selectors incorrectly retain invalid file descriptors.
- Patch by Mark Williams.
+- Issue #28350: String constants with null character no longer interned.
-Build
------
+- Issue #26617: Fix crash when GC runs during weakref callbacks.
-- Issue #28248: Update Windows build to use OpenSSL 1.0.2j.
+- Issue #27942: String constants now interned recursively in tuples and frozensets.
-Tests
------
+- Issue #21578: Fixed misleading error message when ImportError called with
+ invalid keyword args.
-- Issue #27369: In test_pyexpat, avoid testing an error message detail that
- changed in Expat 2.2.0.
+- Issue #28203: Fix incorrect type in error message from
+ ``complex(1.0, {2:3})``. Patch by Soumya Sharma.
+- Issue #27955: Fallback on reading /dev/urandom device when the getrandom()
+ syscall fails with EPERM, for example when blocked by SECCOMP.
-What's New in Python 3.4.5?
-===========================
+- Issue #28131: Fix a regression in zipimport's compile_source(). zipimport
+ should use the same optimization level as the interpreter.
-Release date: 2016-06-26
+- Issue #25221: Fix corrupted result from PyLong_FromLong(0) when
+ Python is compiled with NSMALLPOSINTS = 0.
-Tests
------
+- Issue #25758: Prevents zipimport from unnecessarily encoding a filename
+ (patch by Eryk Sun)
-- Issue #26867: Ubuntu's openssl OP_NO_SSLv3 is forced on by default; fix test.
+- Issue #28189: dictitems_contains no longer swallows compare errors.
+ (Patch by Xiang Zhang)
+- Issue #27812: Properly clear out a generator's frame's backreference to the
+ generator to prevent crashes in frame.clear().
-What's New in Python 3.4.5rc1?
-==============================
+- Issue #27811: Fix a crash when a coroutine that has not been awaited is
+ finalized with warnings-as-errors enabled.
-Release date: 2016-06-11
+- Issue #27587: Fix another issue found by PVS-Studio: Null pointer check
+ after use of 'def' in _PyState_AddModule().
+ Initial patch by Christian Heimes.
-Core and Builtins
------------------
+- Issue #26020: set literal evaluation order did not match documented behaviour.
-- Issue #26478: Fix semantic bugs when using binary operators with dictionary
- views and tuples.
+- 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 #26171: Fix possible integer overflow and heap corruption in
- zipimporter.get_data().
+- 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.
-Library
--------
+- 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 #26556: Update expat to 2.1.1, fixes CVE-2015-1283.
+- 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.
-- Fix TLS stripping vulnerability in smptlib, CVE-2016-0772. Reported by Team
- Oststrom
+- Issue #27419: Standard __import__() no longer look up "__import__" in globals
+ or builtins for importing submodules or "from import". Fixed handling an
+ error of non-string package name.
-- Issue #25939: On Windows open the cert store readonly in ssl.enum_certificates.
+- Issue #27083: Respect the PYTHONCASEOK environment variable under Windows.
-- Issue #26012: Don't traverse into symlinks for ** pattern in
- pathlib.Path.[r]glob().
+- Issue #27514: Make having too many statically nested blocks a SyntaxError
+ instead of SystemError.
-- Issue #24120: Ignore PermissionError when traversing a tree with
- pathlib.Path.[r]glob(). Patch by Ulrich Petri.
+- Issue #27473: Fixed possible integer overflow in bytes and bytearray
+ concatenations. Patch by Xiang Zhang.
-- Skip getaddrinfo if host is already resolved.
- Patch by A. Jesse Jiryu Davis.
+- Issue #27507: Add integer overflow check in bytearray.extend(). Patch by
+ Xiang Zhang.
-- Add asyncio.timeout() context manager.
+- Issue #27581: Don't rely on wrapping for overflow check in
+ PySequence_Tuple(). Patch by Xiang Zhang.
-- Issue #26050: Add asyncio.StreamReader.readuntil() method.
- Patch by Марк Коренберг.
+- Issue #27443: __length_hint__() of bytearray iterators no longer return a
+ negative integer for a resized bytearray.
-Tests
------
+Library
+-------
-- Issue #25940: Changed test_ssl to use self-signed.pythontest.net. This
- avoids relying on svn.python.org, which recently changed root certificate.
+- Issue #25464: Fixed HList.header_exists() in tkinter.tix module by addin
+ a workaround to Tix library bug.
+- Issue #28488: shutil.make_archive() no longer add entry "./" to ZIP archive.
-What's New in Python 3.4.4?
-===========================
+- Issue #24452: Make webbrowser support Chrome on Mac OS X.
-Release date: 2015/12/20
+- Issue #20766: Fix references leaked by pdb in the handling of SIGINT
+ handlers.
-Windows
--------
+- Issue #26293: Fixed writing ZIP files that starts not from the start of the
+ file. Offsets in ZIP file now are relative to the start of the archive in
+ conforming to the specification.
-- Issue #25844: Corrected =/== typo potentially leading to crash in launcher.
+- Issue #28321: Fixed writing non-BMP characters with binary format in plistlib.
+- Issue #28322: Fixed possible crashes when unpickle itertools objects from
+ incorrect pickle data. Based on patch by John Leitch.
-What's New in Python 3.4.4rc1?
-==============================
+- Fix possible integer overflows and crashes in the mmap module with unusual
+ usage patterns.
-Release date: 2015/12/06
+- Issue #1703178: Fix the ability to pass the --link-objects option to the
+ distutils build_ext command.
-Core and Builtins
------------------
+- Issue #28253: Fixed calendar functions for extreme months: 0001-01
+ and 9999-12.
-- Issue #25709: Fixed problem with in-place string concatenation and utf-8
- cache.
+ Methods itermonthdays() and itermonthdays2() are reimplemented so
+ that they don't call itermonthdates() which can cause datetime.date
+ under/overflow.
-- Issue #24097: Fixed crash in object.__reduce__() if slot name is freed inside
- __getattr__.
+- Issue #28275: Fixed possible use after free in the decompress()
+ methods of the LZMADecompressor and BZ2Decompressor classes.
+ Original patch by John Leitch.
-- Issue #24731: Fixed crash on converting objects with special methods
- __bytes__, __trunc__, and __float__ returning instances of subclasses of
- bytes, int, and float to subclasses of bytes, int, and float correspondingly.
+- Issue #27897: Fixed possible crash in sqlite3.Connection.create_collation()
+ if pass invalid string-like object as a name. Patch by Xiang Zhang.
-- Issue #25388: Fixed tokenizer crash when processing undecodable source code
- with a null byte.
+- Issue #18893: Fix invalid exception handling in Lib/ctypes/macholib/dyld.py.
+ Patch by Madison May.
-- Issue #22995: Default implementation of __reduce__ and __reduce_ex__ now
- rejects builtin types with not defined __new__.
+- Issue #27611: Fixed support of default root window in the tkinter.tix module.
-- Issue #24802: Avoid buffer overreads when int(), float(), compile(), exec()
- and eval() are passed bytes-like objects. These objects are not
- necessarily terminated by a null byte, but the functions assumed they were.
+- Issue #27348: In the traceback module, restore the formatting of exception
+ messages like "Exception: None". This fixes a regression introduced in
+ 3.5a2.
-- Issue #24402: Fix input() to prompt to the redirected stdout when
- sys.stdout.fileno() fails.
+- Issue #25651: Allow falsy values to be used for msg parameter of subTest().
-- Issue #24806: Prevent builtin types that are not allowed to be subclassed from
- being subclassed through multiple inheritance.
+- Issue #27932: Prevent memory leak in win32_ver().
-- Issue #24848: Fixed a number of bugs in UTF-7 decoding of misformed data.
+- Fix UnboundLocalError in socket._sendfile_use_sendfile.
-- Issue #25280: Import trace messages emitted in verbose (-v) mode are no
- longer formatted twice.
+- Issue #28075: Check for ERROR_ACCESS_DENIED in Windows implementation of
+ os.stat(). Patch by Eryk Sun.
-- Issue #25003: os.urandom() doesn't use getentropy() on Solaris because
- getentropy() is blocking, whereas os.urandom() should not block. getentropy()
- is supported since Solaris 11.3.
+- Issue #25270: Prevent codecs.escape_encode() from raising SystemError when
+ an empty bytestring is passed.
-- Issue #25182: The stdprinter (used as sys.stderr before the io module is
- imported at startup) now uses the backslashreplace error handler.
+- Issue #28181: Get antigravity over HTTPS. Patch by Kaartic Sivaraam.
-- Issue #24891: Fix a race condition at Python startup if the file descriptor
- of stdin (0), stdout (1) or stderr (2) is closed while Python is creating
- sys.stdin, sys.stdout and sys.stderr objects. These attributes are now set
- to None if the creation of the object failed, instead of raising an OSError
- exception. Initial patch written by Marco Paolini.
+- Issue #25895: Enable WebSocket URL schemes in urllib.parse.urljoin.
+ Patch by Gergely Imreh and Markus Holtermann.
-- Issue #21167: NAN operations are now handled correctly when python is
- compiled with ICC even if -fp-model strict is not specified.
+- Issue #27599: Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp().
-- Issue #4395: Better testing and documentation of binary operators.
- Patch by Martin Panter.
+- Issue #19003:m email.generator now replaces only \r and/or \n line
+ endings, per the RFC, instead of all unicode line endings.
-- Issue #24467: Fixed possible buffer over-read in bytearray. The bytearray
- object now always allocates place for trailing null byte and it's buffer now
- is always null-terminated.
+- Issue #28019: itertools.count() no longer rounds non-integer step in range
+ between 1.0 and 2.0 to 1.
-- Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(),
- PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains()
- to check for and handle errors correctly.
+- Issue #25969: Update the lib2to3 grammar to handle the unpacking
+ generalizations added in 3.5.
-- Issue #24257: Fixed system error in the comparison of faked
- types.SimpleNamespace.
+- 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 #22939: Fixed integer overflow in iterator object. Patch by
- Clement Rouault.
+- Issue #24594: Validates persist parameter when opening MSI database
-- Issue #23985: Fix a possible buffer overrun when deleting a slice from
- the front of a bytearray and then appending some other bytes data.
+- Issue #17582: xml.etree.ElementTree nows preserves whitespaces in attributes
+ (Patch by Duane Griffin. Reviewed and approved by Stefan Behnel.)
-- Issue #24102: Fixed exception type checking in standard error handlers.
+- Issue #28047: Fixed calculation of line length used for the base64 CTE
+ in the new email policies.
-- Issue #23757: PySequence_Tuple() incorrectly called the concrete list API
- when the data was a list subclass.
+- Issue #27445: Don't pass str(_charset) to MIMEText.set_payload().
+ Patch by Claude Paroz.
-- Issue #24407: Fix crash when dict is mutated while being updated.
+- 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 #24096: Make warnings.warn_explicit more robust against mutation of the
- warnings.filters list.
+- 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 #23996: Avoid a crash when a delegated generator raises an
- unnormalized StopIteration exception. Patch by Stefan Behnel.
+- Issue #27570: Avoid zero-length memcpy() etc calls with null source
+ pointers in the "ctypes" and "array" modules.
-- Issue #24022: Fix tokenizer crash when processing undecodable source code.
+- 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 #23309: Avoid a deadlock at shutdown if a daemon thread is aborted
- while it is holding a lock to a buffered I/O object, and the main thread
- tries to use the same I/O object (typically stdout or stderr). A fatal
- error is emitted instead.
+- Issue 27988: Fix email iter_attachments incorrect mutation of payload list.
-- Issue #22977: Fixed formatting Windows error messages on Wine.
- Patch by Martin Panter.
+- Issue #27691: Fix ssl module's parsing of GEN_RID subject alternative name
+ fields in X.509 certs.
-- Issue #23803: Fixed str.partition() and str.rpartition() when a separator
- is wider then partitioned string.
+- Issue #27850: Remove 3DES from ssl module's default cipher list to counter
+ measure sweet32 attack (CVE-2016-2183).
-- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet.
+- Issue #27766: Add ChaCha20 Poly1305 to ssl module's default ciper list.
+ (Required OpenSSL 1.1.0 or LibreSSL).
-- Issue #23629: Fix the default __sizeof__ implementation for variable-sized
- objects.
+- Issue #26470: Port ssl and hashlib module to OpenSSL 1.1.0.
-- Issue #24044: Fix possible null pointer dereference in list.sort in out of
- memory conditions.
+- Remove support for passing a file descriptor to os.access. It never worked but
+ previously didn't raise.
-- Issue #21354: PyCFunction_New function is exposed by python DLL again.
+- Issue #12885: Fix error when distutils encounters symlink.
-Library
--------
+- Issue #27881: Fixed possible bugs when setting sqlite3.Connection.isolation_level.
+ Based on patch by Xiang Zhang.
-- Issue #24903: Fix regression in number of arguments compileall accepts when
- '-d' is specified. The check on the number of arguments has been dropped
- completely as it never worked correctly anyway.
+- Issue #27861: Fixed a crash in sqlite3.Connection.cursor() when a factory
+ creates not a cursor. Patch by Xiang Zhang.
-- Issue #25764: In the subprocess module, preserve any exception caused by
- fork() failure when preexec_fn is used.
+- Issue #19884: Avoid spurious output on OS X with Gnu Readline.
-- Issue #6478: _strptime's regexp cache now is reset after changing timezone
- with time.tzset().
+- Issue #27706: Restore deterministic behavior of random.Random().seed()
+ for string seeds using seeding version 1. Allows sequences of calls
+ to random() to exactly match those obtained in Python 2.
+ Patch by Nofar Schnider.
-- Issue #25177: Fixed problem with the mean of very small and very large
- numbers. As a side effect, statistics.mean and statistics.variance should
- be significantly faster.
+- Issue #10513: Fix a regression in Connection.commit(). Statements should
+ not be reset after a commit.
-- Issue #25718: Fixed copying object with state with boolean value is false.
+- A new version of typing.py from https://github.com/python/typing:
+ - Collection (only for 3.6) (Issue #27598)
+ - Add FrozenSet to __all__ (upstream #261)
+ - fix crash in _get_type_vars() (upstream #259)
+ - Remove the dict constraint in ForwardRef._eval_type (upstream #252)
-- Issue #10131: Fixed deep copying of minidom documents. Based on patch
- by Marian Ganisin.
+- Issue #27539: Fix unnormalised ``Fraction.__pow__`` result in the case
+ of negative exponent and negative base.
-- Issue #25725: Fixed a reference leak in pickle.loads() when unpickling
- invalid data including tuple instructions.
+- Issue #21718: cursor.description is now available for queries using CTEs.
-- Issue #25663: In the Readline completer, avoid listing duplicate global
- names, and search the global namespace before searching builtins.
+- Issue #2466: posixpath.ismount now correctly recognizes mount points which
+ the user does not have permission to access.
-- Issue #25688: Fixed file leak in ElementTree.iterparse() raising an error.
+- Issue #27773: Correct some memory management errors server_hostname in
+ _ssl.wrap_socket().
-- Issue #23914: Fixed SystemError raised by unpickler on broken pickle data.
+- Issue #26750: unittest.mock.create_autospec() now works properly for
+ subclasses of property() and other data descriptors.
-- Issue #25691: Fixed crash on deleting ElementTree.Element attributes.
+- In the curses module, raise an error if window.getstr() or window.instr() is
+ passed a negative value.
-- Issue #25624: ZipFile now always writes a ZIP_STORED header for directory
- entries. Patch by Dingyuan Wang.
+- Issue #27783: Fix possible usage of uninitialized memory in
+ operator.methodcaller.
-- Issue #25583: Avoid incorrect errors raised by os.makedirs(exist_ok=True)
- when the OS gives priority to errors such as EACCES over EEXIST.
+- Issue #27774: Fix possible Py_DECREF on unowned object in _sre.
-- Issue #25593: Change semantics of EventLoop.stop() in asyncio.
+- Issue #27760: Fix possible integer overflow in binascii.b2a_qp.
-- Issue #6973: When we know a subprocess.Popen process has died, do
- not allow the send_signal(), terminate(), or kill() methods to do
- anything as they could potentially signal a different process.
+- Issue #27758: Fix possible integer overflow in the _csv module for large
+ record lengths.
-- Issue #25578: Fix (another) memory leak in SSLSocket.getpeercer().
+- Issue #27568: Prevent HTTPoxy attack (CVE-2016-1000110). Ignore the
+ HTTP_PROXY variable when REQUEST_METHOD environment is set, which indicates
+ that the script is in CGI mode.
-- Issue #25590: In the Readline completer, only call getattr() once per
- attribute.
+- Issue #27656: Do not assume sched.h defines any SCHED_* constants.
-- Issue #25498: Fix a crash when garbage-collecting ctypes objects created
- by wrapping a memoryview. This was a regression made in 3.4.3. Based
- on patch by Eryksun.
+- Issue #27130: In the "zlib" module, fix handling of large buffers
+ (typically 4 GiB) when compressing and decompressing. Previously, inputs
+ were limited to 4 GiB, and compression and decompression operations did not
+ properly handle results of 4 GiB.
-- Issue #18010: Fix the pydoc web server's module search function to handle
- exceptions from importing packages.
+- Issue #27533: Release GIL in nt._isdir
-- Issue #25510: fileinput.FileInput.readline() now returns b'' instead of ''
- at the end if the FileInput was opened with binary mode.
- Patch by Ryosuke Ito.
+- Issue #17711: Fixed unpickling by the persistent ID with protocol 0.
+ Original patch by Alexandre Vassalotti.
-- Issue #25530: Disable the vulnerable SSLv3 protocol by default when creating
- ssl.SSLContext.
+- Issue #27522: Avoid an unintentional reference cycle in email.feedparser.
-- Issue #25569: Fix memory leak in SSLSocket.getpeercert().
+- Issue #26844: Fix error message for imp.find_module() to refer to 'path'
+ instead of 'name'. Patch by Lev Maximov.
-- Issue #21827: Fixed textwrap.dedent() for the case when largest common
- whitespace is a substring of smallest leading whitespace.
- Based on patch by Robert Li.
+- Issue #23804: Fix SSL zero-length recv() calls to not block and not raise
+ an error about unclean EOF.
-- Issue #25471: Sockets returned from accept() shouldn't appear to be
- nonblocking.
+- Issue #27466: Change time format returned by http.cookie.time2netscape,
+ confirming the netscape cookie format and making it consistent with
+ documentation.
-- Issue #25441: asyncio: Raise error from drain() when socket is closed.
+- Issue #26664: Fix activate.fish by removing mis-use of ``$``.
-- Issue #25411: Improved Unicode support in SMTPHandler through better use of
- the email package. Thanks to user simon04 for the patch.
+- Issue #22115: Fixed tracing Tkinter variables: trace_vdelete() with wrong
+ mode no longer break tracing, trace_vinfo() now always returns a list of
+ pairs of strings, tracing in the "u" mode now works.
-- Issue #25380: Fixed protocol for the STACK_GLOBAL opcode in
- pickletools.opcodes.
+- Fix a scoping issue in importlib.util.LazyLoader which triggered an
+ UnboundLocalError when lazy-loading a module that was already put into
+ sys.modules.
-- Issue #23972: Updates asyncio datagram create method allowing reuseport
- and reuseaddr socket options to be set prior to binding the socket.
- Mirroring the existing asyncio create_server method the reuseaddr option
- for datagram sockets defaults to True if the O/S is 'posix' (except if the
- platform is Cygwin). Patch by Chris Laws.
+- Issue #27079: Fixed curses.ascii functions isblank(), iscntrl() and ispunct().
-- Issue #25304: Add asyncio.run_coroutine_threadsafe(). This lets you
- submit a coroutine to a loop from another thread, returning a
- concurrent.futures.Future. By Vincent Michel.
+- Issue #26754: Some functions (compile() etc) accepted a filename argument
+ encoded as an iterable of integers. Now only strings and byte-like objects
+ are accepted.
-- Issue #25319: When threading.Event is reinitialized, the underlying condition
- should use a regular lock rather than a recursive lock.
+- Issue #27048: Prevents distutils failing on Windows when environment
+ variables contain non-ASCII characters
-- Issue #25232: Fix CGIRequestHandler to split the query from the URL at the
- first question mark (?) rather than the last. Patch from Xiang Zhang.
+- Issue #27330: Fixed possible leaks in the ctypes module.
-- Issue #24657: Prevent CGIRequestHandler from collapsing slashes in the
- query part of the URL as if it were a path. Patch from Xiang Zhang.
+- Issue #27238: Got rid of bare excepts in the turtle module. Original patch
+ by Jelle Zijlstra.
-- Issue #22958: Constructor and update method of weakref.WeakValueDictionary
- now accept the self and the dict keyword arguments.
+- Issue #27122: When an exception is raised within the context being managed
+ by a contextlib.ExitStack() and one of the exit stack generators
+ catches and raises it in a chain, do not re-raise the original exception
+ when exiting, let the new chained one through. This avoids the PEP 479
+ bug described in issue25782.
-- Issue #22609: Constructor of collections.UserDict now accepts the self keyword
- argument.
+- [Security] Issue #27278: Fix os.urandom() implementation using getrandom() on
+ Linux. Truncate size to INT_MAX and loop until we collected enough random
+ bytes, instead of casting a directly Py_ssize_t to int.
-- Issue #25262. Added support for BINBYTES8 opcode in Python implementation of
- unpickler. Highest 32 bits of 64-bit size for BINUNICODE8 and BINBYTES8
- opcodes no longer silently ignored on 32-bit platforms in C implementation.
+- Issue #26386: Fixed ttk.TreeView selection operations with item id's
+ containing spaces.
-- Issue #25034: Fix string.Formatter problem with auto-numbering and
- nested format_specs. Patch by Anthon van der Neut.
+- [Security] Issue #22636: Avoid shell injection problems with
+ ctypes.util.find_library().
-- Issue #25233: Rewrite the guts of asyncio.Queue and
- asyncio.Semaphore to be more understandable and correct.
+- Issue #16182: Fix various functions in the "readline" module to use the
+ locale encoding, and fix get_begidx() and get_endidx() to return code point
+ indexes.
-- Issue #23600: Default implementation of tzinfo.fromutc() was returning
- wrong results in some cases.
+- Issue #26930: Update Windows builds to use OpenSSL 1.0.2h.
-- Issue #25203: Failed readline.set_completer_delims() no longer left the
- module in inconsistent state.
+- Issue #27392: Add loop.connect_accepted_socket().
+ Patch by Jim Fulton.
-- Prevent overflow in _Unpickler_Read.
+- Issue #27930: Improved behaviour of logging.handlers.QueueListener.
+ Thanks to Paulo Andrade and Petr Viktorin for the analysis and patch.
-- Issue #25047: The XML encoding declaration written by Element Tree now
- respects the letter case given by the user. This restores the ability to
- write encoding names in uppercase like "UTF-8", which worked in Python 2.
+- Issue #21201: Improves readability of multiprocessing error message. Thanks
+ to Wojciech Walczak for patch.
-- Issue #19143: platform module now reads Windows version from kernel32.dll to
- avoid compatibility shims.
+- Issue #27456: asyncio: Set TCP_NODELAY by default.
-- Issue #23517: Fix rounding in fromtimestamp() and utcfromtimestamp() methods
- of datetime.datetime: microseconds are now rounded to nearest with ties
- going to nearest even integer (ROUND_HALF_EVEN), instead of being rounding
- towards zero (ROUND_DOWN). It's important that these methods use the same
- rounding mode than datetime.timedelta to keep the property:
- (datetime(1970,1,1) + timedelta(seconds=t)) == datetime.utcfromtimestamp(t).
- It also the rounding mode used by round(float) for example.
+- Issue #27906: Fix socket accept exhaustion during high TCP traffic.
+ Patch by Kevin Conway.
-- Issue #24684: socket.socket.getaddrinfo() now calls
- PyUnicode_AsEncodedString() instead of calling the encode() method of the
- host, to handle correctly custom string with an encode() method which doesn't
- return a byte string. The encoder of the IDNA codec is now called directly
- instead of calling the encode() method of the string.
+- Issue #28174: Handle when SO_REUSEPORT isn't properly supported.
+ Patch by Seth Michael Larson.
-- Issue #24982: shutil.make_archive() with the "zip" format now adds entries
- for directories (including empty directories) in ZIP file.
+- Issue #26654: Inspect functools.partial in asyncio.Handle.__repr__.
+ Patch by iceboy.
-- Issue #24857: Comparing call_args to a long sequence now correctly returns a
- boolean result instead of raising an exception. Patch by A Kaptur.
+- Issue #26909: Fix slow pipes IO in asyncio.
+ Patch by INADA Naoki.
-- Issue #25019: Fixed a crash caused by setting non-string key of expat parser.
- Based on patch by John Leitch.
+- Issue #28176: Fix callbacks race in asyncio.SelectorLoop.sock_connect.
-- Issue #24917: time_strftime() buffer over-read.
+- Issue #27759: Fix selectors incorrectly retain invalid file descriptors.
+ Patch by Mark Williams.
-- Issue #23144: Make sure that HTMLParser.feed() returns all the data, even
- when convert_charrefs is True.
+- Issue #28368: Refuse monitoring processes if the child watcher has
+ no loop attached.
+ Patch by Vincent Michel.
-- Issue #16180: Exit pdb if file has syntax error, instead of trapping user
- in an infinite loop. Patch by Xavier de Gaye.
+- Issue #28369: Raise RuntimeError when transport's FD is used with
+ add_reader, add_writer, etc.
-- Issue #21112: Fix regression in unittest.expectedFailure on subclasses.
- Patch from Berker Peksag.
+- Issue #28370: Speedup asyncio.StreamReader.readexactly.
+ Patch by Коренберг Марк.
-- Issue #24931: Instances of subclasses of namedtuples have their own __dict__
- which breaks the inherited __dict__ property and breaks the _asdict() method.
- Removed the __dict__ property to prevent the conflict and fixed _asdict().
+- Issue #28371: Deprecate passing asyncio.Handles to run_in_executor.
-- Issue #24764: cgi.FieldStorage.read_multi() now ignores the Content-Length
- header in part headers. Patch written by Peter Landry and reviewed by Pierre
- Quentel.
+- Issue #28372: Fix asyncio to support formatting of non-python coroutines.
-- Issue #24774: Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu.
+- Issue #28399: Remove UNIX socket from FS before binding.
+ Patch by Коренберг Марк.
-- Issue #21159: Improve message in configparser.InterpolationMissingOptionError.
- Patch from Łukasz Langa.
+- Issue #27972: Prohibit Tasks to await on themselves.
-- Issue #23888: Handle fractional time in cookie expiry. Patch by ssh.
+- Issue #26923: Fix asyncio.Gather to refuse being cancelled once all
+ children are done.
+ Patch by Johannes Ebke.
-- Issue #23004: mock_open() now reads binary data correctly when the type of
- read_data is bytes. Initial patch by Aaron Hill.
+- Issue #26796: Don't configure the number of workers for default
+ threadpool executor.
+ Initial patch by Hans Lawrenz.
-- Issue #23652: Make it possible to compile the select module against the
- libc headers from the Linux Standard Base, which do not include some
- EPOLL macros. Patch by Matt Frank.
+IDLE
+----
-- Issue #22932: Fix timezones in email.utils.formatdate.
- Patch from Dmitry Shachnev.
+- Issue #15308: Add 'interrupt execution' (^C) to Shell menu.
+ Patch by Roger Serwy, updated by Bayard Randel.
-- Issue #23779: imaplib raises TypeError if authenticator tries to abort.
- Patch from Craig Holmquist.
+- Issue #27922: Stop IDLE tests from 'flashing' gui widgets on the screen.
-- Issue #23319: Fix ctypes.BigEndianStructure, swap correctly bytes. Patch
- written by Matthieu Gautier.
+- Add version to title of IDLE help window.
-- Issue #23254: Document how to close the TCPServer listening socket.
- Patch from Martin Panter.
+- Issue #25564: In section on IDLE -- console differences, mention that
+ using exec means that __builtins__ is defined for each statement.
-- Issue #19450: Update Windows and OS X installer builds to use SQLite 3.8.11.
+- Issue #27714: text_textview and test_autocomplete now pass when re-run
+ in the same process. This occurs when test_idle fails when run with the
+ -w option but without -jn. Fix warning from test_config.
-- Issue #23441: rcompleter now prints a tab character instead of displaying
- possible completions for an empty word. Initial patch by Martin Sekera.
+- Issue #25507: IDLE no longer runs buggy code because of its tkinter imports.
+ Users must include the same imports required to run directly in Python.
-- Issue #24735: Fix invalid memory access in
- itertools.combinations_with_replacement().
+- Issue #27452: add line counter and crc to IDLE configHandler test dump.
-- Issue #17527: Add PATCH to wsgiref.validator. Patch from Luca Sbardella.
+- Issue #27365: Allow non-ascii chars in IDLE NEWS.txt, for contributor names.
-- Issue #24683: Fixed crashes in _json functions called with arguments of
- inappropriate type.
+- Issue #27245: IDLE: Cleanly delete custom themes and key bindings.
+ Previously, when IDLE was started from a console or by import, a cascade
+ of warnings was emitted. Patch by Serhiy Storchaka.
-- Issue #21697: shutil.copytree() now correctly handles symbolic links that
- point to directories. Patch by Eduardo Seabra and Thomas Kluyver.
+C API
+-----
-- Issue #24620: Random.setstate() now validates the value of state last element.
+- Issue #26754: PyUnicode_FSDecoder() accepted a filename argument encoded as
+ an iterable of integers. Now only strings and bytes-like objects are accepted.
-- Issue #22153: Improve unittest docs. Patch from Martin Panter and evilzero.
+Tests
+-----
-- Issue #24206: Fixed __eq__ and __ne__ methods of inspect classes.
+- Issue #28409: regrtest: fix the parser of command line arguments.
-- Issue #21750: mock_open.read_data can now be read from each instance, as it
- could in Python 3.3.
+- Issue #27787: Call gc.collect() before checking each test for "dangling
+ threads", since the dangling threads are weak references.
-- Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs.
+- Issue #27369: In test_pyexpat, avoid testing an error message detail that
+ changed in Expat 2.2.0.
-- Issue #18622: unittest.mock.mock_open().reset_mock would recurse infinitely.
- Patch from Nicola Palumbo and Laurent De Buyst.
+Tools/Demos
+-----------
-- Issue #24608: chunk.Chunk.read() now always returns bytes, not str.
+- Issue #27952: Get Tools/scripts/fixcid.py working with Python 3 and the
+ current "re" module, avoid invalid Python backslash escapes, and fix a bug
+ parsing escaped C quote signs.
-- Issue #18684: Fixed reading out of the buffer in the re module.
+- Issue #27332: Fixed the type of the first argument of module-level functions
+ generated by Argument Clinic. Patch by Petr Viktorin.
-- Issue #24259: tarfile now raises a ReadError if an archive is truncated
- inside a data segment.
+- Issue #27418: Fixed Tools/importbench/importbench.py.
-- Issue #24552: Fix use after free in an error case of the _pickle module.
+Windows
+-------
-- Issue #24514: tarfile now tolerates number fields consisting of only
- whitespace.
+- Issue #28251: Improvements to help manuals on Windows.
-- Issue #19176: Fixed doctype() related bugs in C implementation of ElementTree.
- A deprecation warning no longer issued by XMLParser subclass with default
- doctype() method. Direct call of doctype() now issues a warning. Parser's
- doctype() now is not called if target's doctype() is called. Based on patch
- by Martin Panter.
+- Issue #28110: launcher.msi has different product codes between 32-bit and
+ 64-bit
-- Issue #20387: Restore semantic round-trip correctness in tokenize/untokenize
- for tab-indented blocks.
+- Issue #25144: Ensures TargetDir is set before continuing with custom
+ install.
-- Issue #24456: Fixed possible buffer over-read in adpcm2lin() and lin2adpcm()
- functions of the audioop module.
+- Issue #27469: Adds a shell extension to the launcher so that drag and drop
+ works correctly.
-- Issue #24336: The contextmanager decorator now works with functions with
- keyword arguments called "func" and "self". Patch by Martin Panter.
+- Issue #27309: Enabled proper Windows styles in python[w].exe manifest.
-- Issue #24489: ensure a previously set C errno doesn't disturb cmath.polar().
+Build
+-----
-- Issue #5633: Fixed timeit when the statement is a string and the setup is not.
+- Issue #28248: Update Windows build to use OpenSSL 1.0.2j.
-- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument.
- Original patch by David Moore.
+- Issue #28258: Fixed build with Estonian locale (python-config and distclean
+ targets in Makefile). Patch by Arfrever Frehtes Taifersar Arahesis.
-- Issue #23840: tokenize.open() now closes the temporary binary file on error
- to fix a resource warning.
+- Issue #26661: setup.py now detects system libffi with multiarch wrapper.
-- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked
- cursor type.
+- Issue #28066: Fix the logic that searches build directories for generated
+ include files when building outside the source tree.
-- Issue #22107: tempfile.gettempdir() and tempfile.mkdtemp() now try again
- when a directory with the chosen name already exists on Windows as well as
- on Unix. tempfile.mkstemp() now fails early if parent directory is not
- valid (not exists or is a file) on Windows.
+- Issue #15819: Remove redundant include search directory option for building
+ outside the source tree.
-- Issue #6598: Increased time precision and random number range in
- email.utils.make_msgid() to strengthen the uniqueness of the message ID.
+- Issue #27566: Fix clean target in freeze makefile (patch by Lisa Roach)
-- Issue #24091: Fixed various crashes in corner cases in C implementation of
- ElementTree.
+- Issue #27705: Update message in validate_ucrtbase.py
-- Issue #21931: msilib.FCICreate() now raises TypeError in the case of a bad
- argument instead of a ValueError with a bogus FCI error number.
- Patch by Jeffrey Armstrong.
+- Issue #27983: Cause lack of llvm-profdata tool when using clang as
+ required for PGO linking to be a configure time error rather than
+ make time when --with-optimizations is enabled. Also improve our
+ ability to find the llvm-profdata tool on MacOS and some Linuxes.
-- Issue #23796: peek and read1 methods of BufferedReader now raise ValueError
- if they called on a closed object. Patch by John Hergenroeder.
+- Issue #26307: The profile-opt build now applies PGO to the built-in modules.
-- Issue #24521: Fix possible integer overflows in the pickle module.
+- Issue #26359: Add the --with-optimizations configure flag.
-- Issue #22931: Allow '[' and ']' in cookie values.
+- Issue #27713: Suppress spurious build warnings when updating importlib's
+ bootstrap files. Patch by Xiang Zhang
-- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three
- METH_VARARGS methods on _sqlite.Connection.
+- Issue #25825: Correct the references to Modules/python.exp and ld_so_aix,
+ which are required on AIX. This updates references to an installation path
+ that was changed in 3.2a4, and undoes changed references to the build tree
+ that were made in 3.5.0a1.
-- Issue #24094: Fix possible crash in json.encode with poorly behaved dict
- subclasses.
+- Issue #27453: CPP invocation in configure must use CPPFLAGS. Patch by
+ Chi Hsuan Yen.
-- Asyncio issue 222 / PR 231 (Victor Stinner) -- fix @coroutine
- functions without __name__.
+- Issue #27641: The configure script now inserts comments into the makefile
+ to prevent the pgen and _freeze_importlib executables from being cross-
+ compiled.
-- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes.
- Patch written by William Orr.
+- Issue #26662: Set PYTHON_FOR_GEN in configure as the Python program to be
+ used for file generation during the build.
-- The keywords attribute of functools.partial is now always a dictionary.
+- Issue #10910: Avoid C++ compilation errors on FreeBSD and OS X.
+ Also update FreedBSD version checks for the original ctype UTF-8 workaround.
-- Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq's siftup
- and siftdown functions.
-- Backport collections.deque fixes from Python 3.5. Prevents reentrant badness
- during deletion by deferring the decref until the container has been restored
- to a consistent state.
+What's New in Python 3.5.2?
+===========================
-- Issue #23008: Fixed resolving attributes with boolean value is False in pydoc.
+Release date: 2016-06-26
-- Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't
- increment unfinished tasks (this bug was introduced in 3.4.3 when
- JoinableQueue was merged with Queue).
+Core and Builtins
+-----------------
-- Issue #23908: os functions now reject paths with embedded null character
- on Windows instead of silently truncate them.
+- Issue #26930: Update Windows builds to use OpenSSL 1.0.2h.
-- Issue #23728: binascii.crc_hqx() could return an integer outside of the range
- 0-0xffff for empty data.
+Tests
+-----
-- Issue #23811: Add missing newline to the PyCompileError error message.
- Patch by Alex Shkop.
+- Issue #26867: Ubuntu's openssl OP_NO_SSLv3 is forced on by default; fix test.
-- Issue #17898: Fix exception in gettext.py when parsing certain plural forms.
+IDLE
+----
-- Issue #22982: Improve BOM handling when seeking to multiple positions of
- a writable text file.
+- Issue #27365: Allow non-ascii in idlelib/NEWS.txt - minimal part for 3.5.2.
-- Issue #23865: close() methods in multiple modules now are idempotent and more
- robust at shutdown. If they need to release multiple resources, all are
- released even if errors occur.
-- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if
- the FTP connection failed to fix a ResourceWarning.
+What's New in Python 3.5.2 release candidate 1?
+===============================================
-- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not
- available. Patch by Davin Potts.
+Release date: 2016-06-12
-- Issue #15133: _tkinter.tkapp.getboolean() now supports Tcl_Obj and always
- returns bool. tkinter.BooleanVar now validates input values (accepted bool,
- int, str, and Tcl_Obj). tkinter.BooleanVar.get() now always returns bool.
+Core and Builtins
+-----------------
-- Issue #23338: Fixed formatting ctypes error messages on Cygwin.
- Patch by Makoto Kato.
+- Issue #27066: Fixed SystemError if a custom opener (for open()) returns a
+ negative number without setting an exception.
-- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and
- arbitrary precision integers added in Tcl 8.5.
+- Issue #20041: Fixed TypeError when frame.f_trace is set to None.
+ Patch by Xavier de Gaye.
-- Issue #23834: Fix socket.sendto(), use the C Py_ssize_t type to store the
- result of sendto() instead of the C int type.
+- Issue #26168: Fixed possible refleaks in failing Py_BuildValue() with the "N"
+ format unit.
-- Issue #21526: Tkinter now supports new boolean type in Tcl 8.5.
+- Issue #26991: Fix possible refleak when creating a function with annotations.
-- Issue #23838: linecache now clears the cache and returns an empty result on
- MemoryError.
+- Issue #27039: Fixed bytearray.remove() for values greater than 127. Patch by
+ Joe Jevnik.
-- Issue #18473: Fixed 2to3 and 3to2 compatible pickle mappings. Fixed
- ambigious reverse mappings. Added many new mappings. Import mapping is no
- longer applied to modules already mapped with full name mapping.
+- Issue #23640: int.from_bytes() no longer bypasses constructors for subclasses.
-- Issue #23745: The new email header parser now handles duplicate MIME
- parameter names without error, similar to how get_param behaves.
+- Issue #26811: gc.get_objects() no longer contains a broken tuple with NULL
+ pointer.
-- Issue #23792: Ignore KeyboardInterrupt when the pydoc pager is active.
- This mimics the behavior of the standard unix pagers, and prevents
- pipepager from shutting down while the pager itself is still running.
+- Issue #20120: Use RawConfigParser for .pypirc parsing,
+ removing support for interpolation unintentionally added
+ with move to Python 3. Behavior no longer does any
+ interpolation in .pypirc files, matching behavior in Python
+ 2.7 and Setuptools 19.0.
-- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes.
+- Issue #26659: Make the builtin slice type support cycle collection.
-- Issue #21802: The reader in BufferedRWPair now is closed even when closing
- writer failed in BufferedRWPair.close().
+- Issue #26718: super.__init__ no longer leaks memory if called multiple times.
+ NOTE: A direct call of super.__init__ is not endorsed!
-- Issue #23671: string.Template now allows to specify the "self" parameter as
- keyword argument. string.Formatter now allows to specify the "self" and
- the "format_string" parameters as keyword arguments.
+- Issue #25339: PYTHONIOENCODING now has priority over locale in setting the
+ error handler for stdin and stdout.
-- Issue #21560: An attempt to write a data of wrong type no longer cause
- GzipFile corruption. Original patch by Wolfgang Maier.
+- Issue #26494: Fixed crash on iterating exhausting iterators.
+ Affected classes are generic sequence iterators, iterators of str, bytes,
+ bytearray, list, tuple, set, frozenset, dict, OrderedDict, corresponding
+ views and os.scandir() iterator.
-- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes.
+- Issue #26581: If coding cookie is specified multiple times on a line in
+ Python source code file, only the first one is taken to account.
-- Issue #23539: If body is None, http.client.HTTPConnection.request now sets
- Content-Length to 0 for PUT, POST, and PATCH headers to avoid 411 errors from
- some web servers.
+- Issue #26464: Fix str.translate() when string is ASCII and first replacements
+ removes character, but next replacement uses a non-ASCII character or a
+ string longer than 1 character. Regression introduced in Python 3.5.0.
-- Issue #22351: The nntplib.NNTP constructor no longer leaves the connection
- and socket open until the garbage collector cleans them up. Patch by
- Martin Panter.
+- Issue #22836: Ensure exception reports from PyErr_Display() and
+ PyErr_WriteUnraisable() are sensible even when formatting them produces
+ secondary errors. This affects the reports produced by
+ sys.__excepthook__() and when __del__() raises an exception.
-- Issue #23136: _strptime now uniformly handles all days in week 0, including
- Dec 30 of previous year. Based on patch by Jim Carroll.
+- Issue #26302: Correct behavior to reject comma as a legal character for
+ cookie names.
-- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to
- NamedTemporaryFile instance. Patch by Bohuslav Kabrda.
+- Issue #4806: Avoid masking the original TypeError exception when using star
+ (*) unpacking in function calls. Based on patch by Hagen Fürstenau and
+ Daniel Urban.
-- Issue #22903: The fake test case created by unittest.loader when it fails
- importing a test module is now picklable.
+- Issue #27138: Fix the doc comment for FileFinder.find_spec().
-- Issue #23568: Add rdivmod support to MagicMock() objects.
- Patch by Håkan Lövdahl.
+- Issue #26154: Add a new private _PyThreadState_UncheckedGet() function to get
+ the current Python thread state, but don't issue a fatal error if it is NULL.
+ This new function must be used instead of accessing directly the
+ _PyThreadState_Current variable. The variable is no more exposed since
+ Python 3.5.1 to hide the exact implementation of atomic C types, to avoid
+ compiler issues.
-- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar.
- Patch by Demian Brecht.
+- Issue #26194: Deque.insert() gave odd results for bounded deques that had
+ reached their maximum size. Now an IndexError will be raised when attempting
+ to insert into a full deque.
-- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now
- handle exceptions raised by an iterator. Patch by Alon Diamant and Davin
- Potts.
+- Issue #25843: When compiling code, don't merge constants if they are equal
+ but have a different types. For example, ``f1, f2 = lambda: 1, lambda: 1.0``
+ is now correctly compiled to two different functions: ``f1()`` returns ``1``
+ (``int``) and ``f2()`` returns ``1.0`` (``int``), even if ``1`` and ``1.0``
+ are equal.
-- Issue #22928: Disabled HTTP header injections in http.client.
- Original patch by Demian Brecht.
+- Issue #22995: [UPDATE] Comment out the one of the pickleability tests in
+ _PyObject_GetState() due to regressions observed in Cython-based projects.
-- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with
- imp.reload(). Patch by Thomas Kluyver.
+- Issue #25961: Disallowed null characters in the type name.
-- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST
- flag on certificate stores when it is available.
+- Issue #25973: Fix segfault when an invalid nonlocal statement binds a name
+ starting with two underscores.
-- Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the
- SSL layer but the underlying connection hasn't been closed.
+- Issue #22995: Instances of extension types with a state that aren't
+ subclasses of list or dict and haven't implemented any pickle-related
+ methods (__reduce__, __reduce_ex__, __getnewargs__, __getnewargs_ex__,
+ or __getstate__), can no longer be pickled. Including memoryview.
-- Issue #23504: Added an __all__ to the types module.
+- Issue #20440: Massive replacing unsafe attribute setting code with special
+ macro Py_SETREF.
-- Issue #20204: Added the __module__ attribute to _tkinter classes.
+- Issue #25766: Special method __bytes__() now works in str subclasses.
-- Issue #23521: Corrected pure python implementation of timedelta division.
+- Issue #25421: __sizeof__ methods of builtin types now use dynamic basic size.
+ This allows sys.getsize() to work correctly with their subclasses with
+ __slots__ defined.
- * Eliminated OverflowError from timedelta * float for some floats;
- * Corrected rounding in timedlta true division.
+- Issue #25709: Fixed problem with in-place string concatenation and utf-8
+ cache.
-- Issue #21619: Popen objects no longer leave a zombie after exit in the with
- statement if the pipe was broken. Patch by Martin Panter.
+- Issue #27147: Mention PEP 420 in the importlib docs.
-- Issue #6639: Module-level turtle functions no longer raise TclError after
- closing the window.
+- Issue #24097: Fixed crash in object.__reduce__() if slot name is freed inside
+ __getattr__.
-- Issues #814253, #9179: Warnings now are raised when group references and
- conditional group references are used in lookbehind assertions in regular
- expressions.
+- Issue #24731: Fixed crash on converting objects with special methods
+ __bytes__, __trunc__, and __float__ returning instances of subclasses of
+ bytes, int, and float to subclasses of bytes, int, and float correspondingly.
-- Issue #23215: Multibyte codecs with custom error handlers that ignores errors
- consumed too much memory and raised SystemError or MemoryError.
- Original patch by Aleksi Torhamo.
+- Issue #26478: Fix semantic bugs when using binary operators with dictionary
+ views and tuples.
-- Issue #5700: io.FileIO() called flush() after closing the file.
- flush() was not called in close() if closefd=False.
+- Issue #26171: Fix possible integer overflow and heap corruption in
+ zipimporter.get_data().
-- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding
- differs from file system encoding (e.g. on Mac OS).
+- Issue #25660: Fix TAB key behaviour in REPL with readline.
-- Issue #23481: Remove RC4 from the SSL module's default cipher list.
+- Issue #25887: Raise a RuntimeError when a coroutine object is awaited
+ more than once.
-- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty
- docstrings.
+- Issue #27243: Update the __aiter__ protocol: instead of returning
+ an awaitable that resolves to an asynchronous iterator, the asynchronous
+ iterator should be returned directly. Doing the former will trigger a
+ PendingDeprecationWarning.
-- Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb
- module. Original patch by Claudiu Popa.
-- Issue #23146: Fix mishandling of absolute Windows paths with forward
- slashes in pathlib.
+Library
+-------
-- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h.
+- [Security] Issue #26556: Update expat to 2.1.1, fixes CVE-2015-1283.
-- Issue #23367: Fix possible overflows in the unicodedata module.
+- [Security] Fix TLS stripping vulnerability in smtplib, CVE-2016-0772.
+ Reported by Team Oststrom
-- Issue #23361: Fix possible overflow in Windows subprocess creation code.
+- Issue #21386: Implement missing IPv4Address.is_global property. It was
+ documented since 07a5610bae9d. Initial patch by Roger Luethi.
-- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the
- entire preamble to a multipart body.
+- Issue #20900: distutils register command now decodes HTTP responses
+ correctly. Initial patch by ingrid.
-- Issue #23310: Fix MagicMock's initializer to work with __methods__, just
- like configure_mock(). Patch by Kasia Jachim.
+- A new version of typing.py provides several new classes and
+ features: @overload outside stubs, Reversible, DefaultDict, Text,
+ ContextManager, Type[], NewType(), TYPE_CHECKING, and numerous bug
+ fixes (note that some of the new features are not yet implemented in
+ mypy or other static analyzers). Also classes for PEP 492
+ (Awaitable, AsyncIterable, AsyncIterator) have been added (in fact
+ they made it into 3.5.1 but were never mentioned).
-- asyncio: New event loop APIs: set_task_factory() and get_task_factory().
+- Issue #25738: Stop http.server.BaseHTTPRequestHandler.send_error() from
+ sending a message body for 205 Reset Content. Also, don't send Content
+ header fields in responses that don't have a body. Patch by Susumu
+ Koshiba.
-- asyncio: async() function is deprecated in favour of ensure_future().
+- Issue #21313: Fix the "platform" module to tolerate when sys.version
+ contains truncated build information.
-- Issue #23898: Fix inspect.classify_class_attrs() to support attributes
- with overloaded __eq__ and __bool__. Patch by Mike Bayer.
+- [Security] Issue #26839: On Linux, :func:`os.urandom` now calls
+ ``getrandom()`` with ``GRND_NONBLOCK`` to fall back on reading
+ ``/dev/urandom`` if the urandom entropy pool is not initialized yet. Patch
+ written by Colm Buckley.
-- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers
- around bound methods.
+- Issue #27164: In the zlib module, allow decompressing raw Deflate streams
+ with a predefined zdict. Based on patch by Xiang Zhang.
-- Issue #23572: Fixed functools.singledispatch on classes with falsy
- metaclasses. Patch by Ethan Furman.
+- Issue #24291: Fix wsgiref.simple_server.WSGIRequestHandler to completely
+ write data to the client. Previously it could do partial writes and
+ truncate data. Also, wsgiref.handler.ServerHandler can now handle stdout
+ doing partial writes, but this is deprecated.
-IDLE
-----
+- Issue #26809: Add ``__all__`` to :mod:`string`. Patch by Emanuel Barry.
-- Issue 15348: Stop the debugger engine (normally in a user process)
- before closing the debugger window (running in the IDLE process).
- This prevents the RuntimeErrors that were being caught and ignored.
+- Issue #26373: subprocess.Popen.communicate now correctly ignores
+ BrokenPipeError when the child process dies before .communicate()
+ is called in more/all circumstances.
-- Issue #24455: Prevent IDLE from hanging when a) closing the shell while the
- debugger is active (15347); b) closing the debugger with the [X] button
- (15348); and c) activating the debugger when already active (24455).
- The patch by Mark Roseman does this by making two changes.
- 1. Suspend and resume the gui.interaction method with the tcl vwait
- mechanism intended for this purpose (instead of root.mainloop & .quit).
- 2. In gui.run, allow any existing interaction to terminate first.
+- Issue #21776: distutils.upload now correctly handles HTTPError.
+ Initial patch by Claudiu Popa.
-- Change 'The program' to 'Your program' in an IDLE 'kill program?' message
- to make it clearer that the program referred to is the currently running
- user program, not IDLE itself.
+- Issue #27114: Fix SSLContext._load_windows_store_certs fails with
+ PermissionError
-- Issue #24750: Improve the appearance of the IDLE editor window status bar.
- Patch by Mark Roseman.
+- Issue #18383: Avoid creating duplicate filters when using filterwarnings
+ and simplefilter. Based on patch by Alex Shkop.
-- Issue #25313: Change the handling of new built-in text color themes to better
- address the compatibility problem introduced by the addition of IDLE Dark.
- Consistently use the revised idleConf.CurrentTheme everywhere in idlelib.
+- Issue #27057: Fix os.set_inheritable() on Android, ioctl() is blocked by
+ SELinux and fails with EACCESS. The function now falls back to fcntl().
+ Patch written by Michał Bednarski.
-- Issue #24782: Extension configuration is now a tab in the IDLE Preferences
- dialog rather than a separate dialog. The former tabs are now a sorted
- list. Patch by Mark Roseman.
+- Issue #27014: Fix infinite recursion using typing.py. Thanks to Kalle Tuure!
-- Issue #22726: Re-activate the config dialog help button with some content
- about the other buttons and the new IDLE Dark theme.
+- Issue #14132: Fix urllib.request redirect handling when the target only has
+ a query string. Original fix by Ján Janech.
-- Issue #24820: IDLE now has an 'IDLE Dark' built-in text color theme.
- It is more or less IDLE Classic inverted, with a cobalt blue background.
- Strings, comments, keywords, ... are still green, red, orange, ... .
- To use it with IDLEs released before November 2015, hit the
- 'Save as New Custom Theme' button and enter a new name,
- such as 'Custom Dark'. The custom theme will work with any IDLE
- release, and can be modified.
+- Issue #17214: The "urllib.request" module now percent-encodes non-ASCII
+ bytes found in redirect target URLs. Some servers send Location header
+ fields with non-ASCII bytes, but "http.client" requires the request target
+ to be ASCII-encodable, otherwise a UnicodeEncodeError is raised. Based on
+ patch by Christian Heimes.
-- Issue #25224: README.txt is now an idlelib index for IDLE developers and
- curious users. The previous user content is now in the IDLE doc chapter.
- 'IDLE' now means 'Integrated Development and Learning Environment'.
+- Issue #26892: Honor debuglevel flag in urllib.request.HTTPHandler. Patch
+ contributed by Chi Hsuan Yen.
-- Issue #24820: Users can now set breakpoint colors in
- Settings -> Custom Highlighting. Original patch by Mark Roseman.
+- Issue #22274: In the subprocess module, allow stderr to be redirected to
+ stdout even when stdout is not redirected. Patch by Akira Li.
-- Issue #24972: Inactive selection background now matches active selection
- background, as configured by users, on all systems. Found items are now
- always highlighted on Windows. Initial patch by Mark Roseman.
+- Issue #26807: mock_open 'files' no longer error on readline at end of file.
+ Patch from Yolanda Robla.
-- Issue #24570: Idle: make calltip and completion boxes appear on Macs
- affected by a tk regression. Initial patch by Mark Roseman.
+- Issue #25745: Fixed leaking a userptr in curses panel destructor.
-- Issue #24988: Idle ScrolledList context menus (used in debugger)
- now work on Mac Aqua. Patch by Mark Roseman.
+- Issue #26977: Removed unnecessary, and ignored, call to sum of squares helper
+ in statistics.pvariance.
-- Issue #24801: Make right-click for context menu work on Mac Aqua.
- Patch by Mark Roseman.
+- Issue #26881: The modulefinder module now supports extended opcode arguments.
-- Issue #25173: Associate tkinter messageboxes with a specific widget.
- For Mac OSX, make them a 'sheet'. Patch by Mark Roseman.
+- Issue #23815: Fixed crashes related to directly created instances of types in
+ _tkinter and curses.panel modules.
-- Issue #25198: Enhance the initial html viewer now used for Idle Help.
- * Properly indent fixed-pitch text (patch by Mark Roseman).
- * Give code snippet a very Sphinx-like light blueish-gray background.
- * Re-use initial width and height set by users for shell and editor.
- * When the Table of Contents (TOC) menu is used, put the section header
- at the top of the screen.
+- Issue #17765: weakref.ref() no longer silently ignores keyword arguments.
+ Patch by Georg Brandl.
-- Issue #25225: Condense and rewrite Idle doc section on text colors.
+- Issue #26873: xmlrpc now raises ResponseError on unsupported type tags
+ instead of silently return incorrect result.
-- Issue #21995: Explain some differences between IDLE and console Python.
+- Issue #26711: Fixed the comparison of plistlib.Data with other types.
-- Issue #22820: Explain need for *print* when running file from Idle editor.
+- Issue #24114: Fix an uninitialized variable in `ctypes.util`.
-- Issue #25224: Doc: augment Idle feature list and no-subprocess section.
+ The bug only occurs on SunOS when the ctypes implementation searches
+ for the `crle` program. Patch by Xiang Zhang. Tested on SunOS by
+ Kees Bos.
-- Issue #25219: Update doc for Idle command line options.
- Some were missing and notes were not correct.
+- Issue #26864: In urllib.request, change the proxy bypass host checking
+ against no_proxy to be case-insensitive, and to not match unrelated host
+ names that happen to have a bypassed hostname as a suffix. Patch by Xiang
+ Zhang.
-- Issue #24861: Most of idlelib is private and subject to change.
- Use idleib.idle.* to start Idle. See idlelib.__init__.__doc__.
+- Issue #26634: recursive_repr() now sets __qualname__ of wrapper. Patch by
+ Xiang Zhang.
-- Issue #25199: Idle: add synchronization comments for future maintainers.
+- Issue #26804: urllib.request will prefer lower_case proxy environment
+ variables over UPPER_CASE or Mixed_Case ones. Patch contributed by Hans-Peter
+ Jansen.
-- Issue #16893: Replace help.txt with help.html for Idle doc display.
- The new idlelib/help.html is rstripped Doc/build/html/library/idle.html.
- It looks better than help.txt and will better document Idle as released.
- The tkinter html viewer that works for this file was written by Mark Roseman.
- The now unused EditorWindow.HelpDialog class and helt.txt file are deprecated.
+- Issue #26837: assertSequenceEqual() now correctly outputs non-stringified
+ differing items (like bytes in the -b mode). This affects assertListEqual()
+ and assertTupleEqual().
-- Issue #24199: Deprecate unused idlelib.idlever with possible removal in 3.6.
+- Issue #26041: Remove "will be removed in Python 3.7" from deprecation
+ messages of platform.dist() and platform.linux_distribution().
+ Patch by Kumaripaba Miyurusara Athukorala.
-- Issue #24790: Remove extraneous code (which also create 2 & 3 conflicts).
+- Issue #26822: itemgetter, attrgetter and methodcaller objects no longer
+ silently ignore keyword arguments.
-- Issue #23672: Allow Idle to edit and run files with astral chars in name.
- Patch by Mohd Sanad Zaki Rizvi.
+- Issue #26733: Disassembling a class now disassembles class and static methods.
+ Patch by Xiang Zhang.
-- Issue 24745: Idle editor default font. Switch from Courier to
- platform-sensitive TkFixedFont. This should not affect current customized
- font selections. If there is a problem, edit $HOME/.idlerc/config-main.cfg
- and remove 'fontxxx' entries from [Editor Window]. Patch by Mark Roseman.
+- Issue #26801: Fix error handling in :func:`shutil.get_terminal_size`, catch
+ :exc:`AttributeError` instead of :exc:`NameError`. Patch written by Emanuel
+ Barry.
-- Issue #21192: Idle editor. When a file is run, put its name in the restart bar.
- Do not print false prompts. Original patch by Adnan Umer.
+- Issue #24838: tarfile's ustar and gnu formats now correctly calculate name
+ and link field limits for multibyte character encodings like utf-8.
-- Issue #13884: Idle menus. Remove tearoff lines. Patch by Roger Serwy.
+- [Security] Issue #26657: Fix directory traversal vulnerability with
+ http.server on Windows. This fixes a regression that was introduced in
+ 3.3.4rc1 and 3.4.0rc1. Based on patch by Philipp Hagemeister.
-- Issue #23184: remove unused names and imports in idlelib.
- Initial patch by Al Sweigart.
+- Issue #26717: Stop encoding Latin-1-ized WSGI paths with UTF-8. Patch by
+ Anthony Sottile.
-Tests
------
+- Issue #26735: Fix :func:`os.urandom` on Solaris 11.3 and newer when reading
+ more than 1,024 bytes: call ``getrandom()`` multiple times with a limit of
+ 1024 bytes per call.
-- Issue #25616: Tests for OrderedDict are extracted from test_collections
- into separate file test_ordered_dict.
+- Issue #16329: Add .webm to mimetypes.types_map. Patch by Giampaolo Rodola'.
-- Issue #25099: Make test_compileall not fail when an entry on sys.path cannot
- be written to (commonly seen in administrative installs on Windows).
+- Issue #13952: Add .csv to mimetypes.types_map. Patch by Geoff Wilson.
-- Issue #24751: When running regrtest with the ``-w`` command line option,
- a test run is no longer marked as a failure if all tests succeed when
- re-run.
+- Issue #26709: Fixed Y2038 problem in loading binary PLists.
-- Issue #21520: test_zipfile no longer fails if the word 'bad' appears
- anywhere in the name of the current directory.
+- Issue #23735: Handle terminal resizing with Readline 6.3+ by installing our
+ own SIGWINCH handler. Patch by Eric Price.
-- Issue #23799: Added test.support.start_threads() for running and
- cleaning up multiple threads.
+- Issue #26586: In http.server, respond with "413 Request header fields too
+ large" if there are too many header fields to parse, rather than killing
+ the connection and raising an unhandled exception. Patch by Xiang Zhang.
-- Issue #22390: test.regrtest now emits a warning if temporary files or
- directories are left after running a test.
+- Issue #22854: Change BufferedReader.writable() and
+ BufferedWriter.readable() to always return False.
-- Issue #23583: Added tests for standard IO streams in IDLE.
+- Issue #25195: Fix a regression in mock.MagicMock. _Call is a subclass of
+ tuple (changeset 3603bae63c13 only works for classes) so we need to
+ implement __ne__ ourselves. Patch by Andrew Plummer.
-Build
------
+- Issue #26644: Raise ValueError rather than SystemError when a negative
+ length is passed to SSLSocket.recv() or read().
-- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make
- the resulting executable faster.
+- Issue #23804: Fix SSL recv(0) and read(0) methods to return zero bytes
+ instead of up to 1024.
-- Issue #24603: Update Windows builds to use OpenSSL1.0.2d
- and OS X 10.5 installer to use OpenSSL 1.0.2e.
+- Issue #26616: Fixed a bug in datetime.astimezone() method.
-C API
------
+- Issue #21925: :func:`warnings.formatwarning` now catches exceptions on
+ ``linecache.getline(...)`` to be able to log :exc:`ResourceWarning` emitted
+ late during the Python shutdown process.
-- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error
+- Issue #24266: Ctrl+C during Readline history search now cancels the search
+ mode when compiled with Readline 7.
-Documentation
--------------
+- Issue #26560: Avoid potential ValueError in BaseHandler.start_response.
+ Initial patch by Peter Inglesby.
-- Issue #12067: Rewrite Comparisons section in the Expressions chapter of the
- language reference. Some of the details of comparing mixed types were
- incorrect or ambiguous. NotImplemented is only relevant at a lower level
- than the Expressions chapter. Added details of comparing range() objects,
- and default behaviour and consistency suggestions for user-defined classes.
- Patch from Andy Maier.
+- [Security] Issue #26313: ssl.py _load_windows_store_certs fails if windows
+ cert store is empty. Patch by Baji.
-- Issue #24952: Clarify the default size argument of stack_size() in
- the "threading" and "_thread" modules. Patch from Mattip.
+- Issue #26569: Fix :func:`pyclbr.readmodule` and :func:`pyclbr.readmodule_ex`
+ to support importing packages.
-- Issue #24808: Update the types of some PyTypeObject fields. Patch by
- Joseph Weston.
+- Issue #26499: Account for remaining Content-Length in
+ HTTPResponse.readline() and read1(). Based on patch by Silent Ghost.
+ Also document that HTTPResponse now supports these methods.
-- Issue #22812: Fix unittest discovery examples.
- Patch from Pam McA'Nulty.
+- Issue #25320: Handle sockets in directories unittest discovery is scanning.
+ Patch from Victor van den Elzen.
-- Issue #24129: Clarify the reference documentation for name resolution.
- This includes removing the assumption that readers will be familiar with the
- name resolution scheme Python used prior to the introduction of lexical
- scoping for function namespaces. Patch by Ivan Levkivskyi.
+- Issue #16181: cookiejar.http2time() now returns None if year is higher than
+ datetime.MAXYEAR.
-- Issue #20769: Improve reload() docs. Patch by Dorian Pula.
+- Issue #26513: Fixes platform module detection of Windows Server
-- Issue #23589: Remove duplicate sentence from the FAQ. Patch by Yongzhi Pan.
+- Issue #23718: Fixed parsing time in week 0 before Jan 1. Original patch by
+ Tamás Bence Gedai.
-- Issue #24729: Correct IO tutorial to match implementation regarding
- encoding parameter to open function.
+- Issue #20589: Invoking Path.owner() and Path.group() on Windows now raise
+ NotImplementedError instead of ImportError.
-- Issue #24351: Clarify what is meant by "identifier" in the context of
- string.Template instances.
+- Issue #26177: Fixed the keys() method for Canvas and Scrollbar widgets.
-- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter
- doc. Remove obsolete example from FAQ. Patch by Martin Panter.
+- Issue #15068: Got rid of excessive buffering in the fileinput module.
+ The bufsize parameter is no longer used.
-- Issue #24029: Document the name binding behavior for submodule imports.
+- Issue #2202: Fix UnboundLocalError in
+ AbstractDigestAuthHandler.get_algorithm_impls. Initial patch by Mathieu
+ Dupuy.
-- Issue #24077: Fix typo in man page for -I command option: -s, not -S.
+- Issue #25718: Fixed pickling and copying the accumulate() iterator with
+ total is None.
-Tools/Demos
------------
+- Issue #26475: Fixed debugging output for regular expressions with the (?x)
+ flag.
-- Issue #25440: Fix output of python-config --extension-suffix.
+- Issue #26457: Fixed the subnets() methods in IP network classes for the case
+ when resulting prefix length is equal to maximal prefix length.
+ Based on patch by Xiang Zhang.
-- Issue #23330: h2py now supports arbitrary filenames in #include.
+- Issue #26385: Remove the file if the internal open() call in
+ NamedTemporaryFile() fails. Patch by Silent Ghost.
-- Issue #24031: make patchcheck now supports git checkouts, too.
+- Issue #26402: Fix XML-RPC client to retry when the server shuts down a
+ persistent connection. This was a regression related to the new
+ http.client.RemoteDisconnected exception in 3.5.0a4.
-Windows
--------
+- Issue #25913: Leading ``<~`` is optional now in base64.a85decode() with
+ adobe=True. Patch by Swati Jaiswal.
-- Issue #24306: Sets component ID for launcher to match 3.5 and later
- to avoid downgrading.
+- Issue #26186: Remove an invalid type check in importlib.util.LazyLoader.
-- Issue #25022: Removed very outdated PC/example_nt/ directory.
+- Issue #26367: importlib.__import__() raises SystemError like
+ builtins.__import__() when ``level`` is specified but without an accompanying
+ package specified.
+- Issue #26309: In the "socketserver" module, shut down the request (closing
+ the connected socket) when verify_request() returns false. Patch by Aviv
+ Palivoda.
-What's New in Python 3.4.3?
-===========================
+- [Security] Issue #25939: On Windows open the cert store readonly in
+ ssl.enum_certificates.
-Release date: 2015-02-23
+- Issue #25995: os.walk() no longer uses FDs proportional to the tree depth.
-Core and Builtins
------------------
+- Issue #26117: The os.scandir() iterator now closes file descriptor not only
+ when the iteration is finished, but when it was failed with error.
-- Issue #22735: Fix many edge cases (including crashes) involving custom mro()
- implementations.
+- Issue #25911: Restored support of bytes paths in os.walk() on Windows.
-- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer()
- and PyObject_AsWriteBuffer().
+- Issue #26045: Add UTF-8 suggestion to error message when posting a
+ non-Latin-1 string with http.client.
-- Issue #21295: Revert some changes (issue #16795) to AST line numbers and
- column offsets that constituted a regression.
+- Issue #12923: Reset FancyURLopener's redirect counter even if there is an
+ exception. Based on patches by Brian Brazil and Daniel Rocco.
-- Issue #21408: The default __ne__() now returns NotImplemented if __eq__()
- returned NotImplemented. Original patch by Martin Panter.
+- Issue #25945: Fixed a crash when unpickle the functools.partial object with
+ wrong state. Fixed a leak in failed functools.partial constructor.
+ "args" and "keywords" attributes of functools.partial have now always types
+ tuple and dict correspondingly.
-- Issue #23321: Fixed a crash in str.decode() when error handler returned
- replacment string longer than mailformed input data.
+- Issue #26202: copy.deepcopy() now correctly copies range() objects with
+ non-atomic attributes.
-- Issue #23048: Fix jumping out of an infinite while loop in the pdb.
+- Issue #23076: Path.glob() now raises a ValueError if it's called with an
+ invalid pattern. Patch by Thomas Nyberg.
-- Issue #20335: bytes constructor now raises TypeError when encoding or errors
- is specified with non-string argument. Based on patch by Renaud Blanch.
+- Issue #19883: Fixed possible integer overflows in zipimport.
-- Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff
- bytes on a 32-bit platform.
+- Issue #26227: On Windows, getnameinfo(), gethostbyaddr() and
+ gethostbyname_ex() functions of the socket module now decode the hostname
+ from the ANSI code page rather than UTF-8.
-- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant
- dict insertion in debug mode.
+- Issue #26147: xmlrpc now works with strings not encodable with used
+ non-UTF-8 encoding.
-- Issue #22643: Fix integer overflow in Unicode case operations (upper, lower,
- title, swapcase, casefold).
+- Issue #25935: Garbage collector now breaks reference loops with OrderedDict.
-- Issue #22604: Fix assertion error in debug mode when dividing a complex
- number by (nan+0j).
+- Issue #16620: Fixed AttributeError in msilib.Directory.glob().
-- Issue #22470: Fixed integer overflow issues in "backslashreplace",
- "xmlcharrefreplace", and "surrogatepass" error handlers.
+- Issue #26013: Added compatibility with broken protocol 2 pickles created
+ in old Python 3 versions (3.4.3 and lower).
-- Issue #22520: Fix overflow checking when generating the repr of a unicode
- object.
+- Issue #25850: Use cross-compilation by default for 64-bit Windows.
-- Issue #22519: Fix overflow checking in PyBytes_Repr.
+- Issue #17633: Improve zipimport's support for namespace packages.
-- Issue #22518: Fix integer overflow issues in latin-1 encoding.
+- Issue #24705: Fix sysconfig._parse_makefile not expanding ${} vars
+ appearing before $() vars.
-- Issue #23165: Perform overflow checks before allocating memory in the
- _Py_char2wchar function.
+- Issue #22138: Fix mock.patch behavior when patching descriptors. Restore
+ original values after patching. Patch contributed by Sean McCully.
-Library
--------
+- Issue #25672: In the ssl module, enable the SSL_MODE_RELEASE_BUFFERS mode
+ option if it is safe to do so.
-- Issue #23399: pyvenv creates relative symlinks where possible.
+- Issue #26012: Don't traverse into symlinks for ** pattern in
+ pathlib.Path.[r]glob().
-- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to
- prevent corrupting exported buffer.
+- Issue #24120: Ignore PermissionError when traversing a tree with
+ pathlib.Path.[r]glob(). Patch by Ulrich Petri.
-- Issue #23363: Fix possible overflow in itertools.permutations.
+- Issue #25447: fileinput now uses sys.stdin as-is if it does not have a
+ buffer attribute (restores backward compatibility).
-- Issue #23364: Fix possible overflow in itertools.product.
+- Issue #25447: Copying the lru_cache() wrapper object now always works,
+ independedly from the type of the wrapped object (by returning the original
+ object unchanged).
-- Issue #23366: Fixed possible integer overflow in itertools.combinations.
+- Issue #24103: Fixed possible use after free in ElementTree.XMLPullParser.
-- Issue #23369: Fixed possible integer overflow in
- _json.encode_basestring_ascii.
+- Issue #25860: os.fwalk() no longer skips remaining directories when error
+ occurs. Original patch by Samson Lee.
-- Issue #23353: Fix the exception handling of generators in
- PyEval_EvalFrameEx(). At entry, save or swap the exception state even if
- PyEval_EvalFrameEx() is called with throwflag=0. At exit, the exception state
- is now always restored or swapped, not only if why is WHY_YIELD or
- WHY_RETURN. Patch co-written with Antoine Pitrou.
+- Issue #25914: Fixed and simplified OrderedDict.__sizeof__.
-- Issue #18518: timeit now rejects statements which can't be compiled outside
- a function or a loop (e.g. "return" or "break").
+- Issue #25902: Fixed various refcount issues in ElementTree iteration.
-- Issue #23094: Fixed readline with frames in Python implementation of pickle.
+- Issue #25717: Restore the previous behaviour of tolerating most fstat()
+ errors when opening files. This was a regression in 3.5a1, and stopped
+ anonymous temporary files from working in special cases.
-- Issue #23268: Fixed bugs in the comparison of ipaddress classes.
+- Issue #24903: Fix regression in number of arguments compileall accepts when
+ '-d' is specified. The check on the number of arguments has been dropped
+ completely as it never worked correctly anyway.
-- Issue #21408: Removed incorrect implementations of __ne__() which didn't
- returned NotImplemented if __eq__() returned NotImplemented. The default
- __ne__() now works correctly.
+- Issue #25764: In the subprocess module, preserve any exception caused by
+ fork() failure when preexec_fn is used.
-- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed)
- headers with no key rather than assuming the body has started.
+- Issue #6478: _strptime's regexp cache now is reset after changing timezone
+ with time.tzset().
-- Issue #23248: Update ssl error codes from latest OpenSSL git master.
+- Issue #14285: When executing a package with the "python -m package" option,
+ and package initialization fails, a proper traceback is now reported. The
+ "runpy" module now lets exceptions from package initialization pass back to
+ the caller, rather than raising ImportError.
-- Issue #23098: 64-bit dev_t is now supported in the os module.
+- Issue #19771: Also in runpy and the "-m" option, omit the irrelevant
+ message ". . . is a package and cannot be directly executed" if the package
+ could not even be initialized (e.g. due to a bad ``*.pyc`` file).
-- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure"
- as they are written in the standard.
+- Issue #25177: Fixed problem with the mean of very small and very large
+ numbers. As a side effect, statistics.mean and statistics.variance should
+ be significantly faster.
-- Issue #23063: In the disutils' check command, fix parsing of reST with code or
- code-block directives.
+- Issue #25718: Fixed copying object with state with boolean value is false.
-- Issue #23209, #23225: selectors.BaseSelector.close() now clears its internal
- reference to the selector mapping to break a reference cycle. Initial patch
- written by Martin Richard.
+- Issue #10131: Fixed deep copying of minidom documents. Based on patch
+ by Marian Ganisin.
-- Issue #21356: Make ssl.RAND_egd() optional to support LibreSSL. The
- availability of the function is checked during the compilation. Patch written
- by Bernard Spil.
+- Issue #25725: Fixed a reference leak in pickle.loads() when unpickling
+ invalid data including tuple instructions.
-- Issue #20896, #22935: The :func:`ssl.get_server_certificate` function now
- uses the :data:`~ssl.PROTOCOL_SSLv23` protocol by default, not
- :data:`~ssl.PROTOCOL_SSLv3`, for maximum compatibility and support platforms
- where :data:`~ssl.PROTOCOL_SSLv3` support is disabled.
+- Issue #25663: In the Readline completer, avoid listing duplicate global
+ names, and search the global namespace before searching builtins.
-- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol
- version.
+- Issue #25688: Fixed file leak in ElementTree.iterparse() raising an error.
-- Issue #23132: Mitigate regression in speed and clarity in functools.total_ordering.
+- Issue #23914: Fixed SystemError raised by unpickler on broken pickle data.
-- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(),
- instead of reading /dev/urandom, to get pseudo-random bytes.
+- Issue #25691: Fixed crash on deleting ElementTree.Element attributes.
-- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and
- fragment when it redirects to add a trailing slash.
+- Issue #25624: ZipFile now always writes a ZIP_STORED header for directory
+ entries. Patch by Dingyuan Wang.
-- Issue #23093: In the io, module allow more operations to work on detached
- streams.
+- Skip getaddrinfo if host is already resolved.
+ Patch by A. Jesse Jiryu Davis.
-- Issue #19104: pprint now produces evaluable output for wrapped strings.
+- Issue #26050: Add asyncio.StreamReader.readuntil() method.
+ Patch by Марк Коренберг.
-- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter.
+- Issue #25924: Avoid unnecessary serialization of getaddrinfo(3) calls on
+ OS X versions 10.5 or higher. Original patch by A. Jesse Jiryu Davis.
-- Issue #15513: Added a __sizeof__ implementation for pickle classes.
+- Issue #26406: Avoid unnecessary serialization of getaddrinfo(3) calls on
+ current versions of OpenBSD and NetBSD. Patch by A. Jesse Jiryu Davis.
-- Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can
- produce more compact result and no longer produces invalid output if input
- data contains MEMOIZE opcodes together with PUT or BINPUT opcodes.
+- Issue #26848: Fix asyncio/subprocess.communicate() to handle empty input.
+ Patch by Jack O'Connor.
-- Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port
- value in the host header was set to "None". Patch by Demian Brecht.
+- Issue #27040: Add loop.get_exception_handler method
-- Issue #23016: A warning no longer produces an AttributeError when the program
- is run with pythonw.exe.
+- Issue #27041: asyncio: Add loop.create_future method
-- Issue #21775: shutil.copytree(): fix crash when copying to VFAT. An exception
- handler assumed that that OSError objects always have a 'winerror' attribute.
- That is not the case, so the exception handler itself raised AttributeError
- when run on Linux (and, presumably, any other non-Windows OS).
- Patch by Greg Ward.
+- Issue #27223: asyncio: Fix _read_ready and _write_ready to respect
+ _conn_lost.
+ Patch by Łukasz Langa.
-- Issue #1218234: Fix inspect.getsource() to load updated source of
- reloaded module. Initial patch by Berker Peksag.
+- Issue #22970: asyncio: Fix inconsistency cancelling Condition.wait.
+ Patch by David Coles.
-- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the
- context's check_hostname attribute over the *check_hostname* parameter.
+IDLE
+----
-- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode
- will return. This resolves CVE-2013-1753.
+- Issue #5124: Paste with text selected now replaces the selection on X11.
+ This matches how paste works on Windows, Mac, most modern Linux apps,
+ and ttk widgets. Original patch by Serhiy Storchaka.
-- Issue #22966: Fix __pycache__ pyc file name clobber when pyc_compile is
- asked to compile a source file containing multiple dots in the source file
- name.
+- Issue #24759: Make clear in idlelib.idle_test.__init__ that the directory
+ is a private implementation of test.test_idle and tool for maintainers.
-- Issue #21971: Update turtledemo doc and add module to the index.
+- Issue #27196: Stop 'ThemeChanged' warnings when running IDLE tests.
+ These persisted after other warnings were suppressed in #20567.
+ Apply Serhiy Storchaka's update_idletasks solution to four test files.
+ Record this additional advice in idle_test/README.txt
-- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails.
- Original patch by Martin Panter.
+- Issue #20567: Revise idle_test/README.txt with advice about avoiding
+ tk warning messages from tests. Apply advice to several IDLE tests.
-- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor.
+- Issue #27117: Make colorizer htest and turtledemo work with dark themes.
+ Move code for configuring text widget colors to a new function.
-- Issue #22915: SAX parser now supports files opened with file descriptor or
- bytes path.
+- Issue #26673: When tk reports font size as 0, change to size 10.
+ Such fonts on Linux prevented the configuration dialog from opening.
-- Issue #22609: Constructors and update methods of mapping classes in the
- collections module now accept the self keyword argument.
+- Issue #21939: Add test for IDLE's percolator.
+ Original patch by Saimadhav Heblikar.
-- Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler.
+- Issue #21676: Add test for IDLE's replace dialog.
+ Original patch by Saimadhav Heblikar.
-- Issue #22921: Allow SSLContext to take the *hostname* parameter even if
- OpenSSL doesn't support SNI.
+- Issue #18410: Add test for IDLE's search dialog.
+ Original patch by Westley Martínez.
-- Issue #22894: TestCase.subTest() would cause the test suite to be stopped
- when in failfast mode, even in the absence of failures.
+- Issue #21703: Add test for IDLE's undo delegator.
+ Original patch by Saimadhav Heblikar .
-- Issue #22638: SSLv3 is now disabled throughout the standard library.
- It can still be enabled by instantiating a SSLContext manually.
+- Issue #27044: Add ConfigDialog.remove_var_callbacks to stop memory leaks.
-- Issue #22370: Windows detection in pathlib is now more robust.
+- Issue #23977: Add more asserts to test_delegator.
-- Issue #22841: Reject coroutines in asyncio add_signal_handler().
- Patch by Ludovic.Gasc.
+- Issue #20640: Add tests for idlelib.configHelpSourceEdit.
+ Patch by Saimadhav Heblikar.
-- Issue #22849: Fix possible double free in the io.TextIOWrapper constructor.
+- In the 'IDLE-console differences' section of the IDLE doc, clarify
+ how running with IDLE affects sys.modules and the standard streams.
-- Issue #12728: Different Unicode characters having the same uppercase but
- different lowercase are now matched in case-insensitive regular expressions.
+- Issue #25507: fix incorrect change in IOBinding that prevented printing.
+ Augment IOBinding htest to include all major IOBinding functions.
-- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian
- platforms.
+- Issue #25905: Revert unwanted conversion of ' to ’ RIGHT SINGLE QUOTATION
+ MARK in README.txt and open this and NEWS.txt with 'ascii'.
+ Re-encode CREDITS.txt to utf-8 and open it with 'utf-8'.
-- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x.
- Based on patch by Martin Panter.
+Documentation
+-------------
-- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat.
- Based on patch by Aivars Kalvāns.
+- Issue #19489: Moved the search box from the sidebar to the header and footer
+ of each page. Patch by Ammar Askar.
-- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments.
+- Issue #24136: Document the new PEP 448 unpacking syntax of 3.5.
-- Issue #22417: Verify certificates by default in httplib (PEP 476).
+- Issue #26736: Used HTTPS for external links in the documentation if possible.
-- Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2
- and above. Patch by Tim Graham.
+- Issue #6953: Rework the Readline module documentation to group related
+ functions together, and add more details such as what underlying Readline
+ functions and variables are accessed.
-- Issue #22366: urllib.request.urlopen will accept a context object
- (SSLContext) as an argument which will then used be for HTTPS connection.
- Patch by Alex Gaynor.
+- Issue #23606: Adds note to ctypes documentation regarding cdll.msvcrt.
-- Issue #22776: Brought excluded code into the scope of a try block in
- SysLogHandler.emit().
+- Issue #25500: Fix documentation to not claim that __import__ is searched for
+ in the global scope.
-- Issue #22665: Add missing get_terminal_size and SameFileError to
- shutil.__all__.
+- Issue #26014: Update 3.x packaging documentation:
+ * "See also" links to the new docs are now provided in the legacy pages
+ * links to setuptools documentation have been updated
-- Issue #17381: Fixed handling of case-insensitive ranges in regular
- expressions.
+Tests
+-----
-- Issue #22410: Module level functions in the re module now cache compiled
- locale-dependent regular expressions taking into account the locale.
+- Issue #21916: Added tests for the turtle module. Patch by ingrid,
+ Gregory Loyse and Jelle Zijlstra.
-- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.)
- now return False when the underlying stat call raises NotADirectoryError.
+- Issue #26523: The multiprocessing thread pool (multiprocessing.dummy.Pool)
+ was untested.
-- Issue #8876: distutils now falls back to copying files when hard linking
- doesn't work. This allows use with special filesystems such as VirtualBox
- shared folders.
+- Issue #26015: Added new tests for pickling iterators of mutable sequences.
-- Issue #18853: Fixed ResourceWarning in shlex.__nain__.
+- Issue #26325: Added test.support.check_no_resource_warning() to check that
+ no ResourceWarning is emitted.
-- Issue #9351: Defaults set with set_defaults on an argparse subparser
- are no longer ignored when also set on the parent parser.
+- Issue #25940: Changed test_ssl to use self-signed.pythontest.net. This
+ avoids relying on svn.python.org, which recently changed root certificate.
-- Issue #21991: Make email.headerregistry's header 'params' attributes
- be read-only (MappingProxyType). Previously the dictionary was modifiable
- but a new one was created on each access of the attribute.
+- Issue #25616: Tests for OrderedDict are extracted from test_collections
+ into separate file test_ordered_dict.
-- Issue #22641: In asyncio, the default SSL context for client connections
- is now created using ssl.create_default_context(), for stronger security.
+- Issue #26583: Skip test_timestamp_overflow in test_import if bytecode
+ files cannot be written.
-- Issue #22435: Fix a file descriptor leak when SocketServer bind fails.
+Build
+-----
-- Issue #13096: Fixed segfault in CTypes POINTER handling of large
- values.
+- Issue #26884: Fix linking extension modules for cross builds.
+ Patch by Xavier de Gaye.
-- Issue #11694: Raise ConversionError in xdrlib as documented. Patch
- by Filip Gruszczyński and Claudiu Popa.
+- Issue #22359: Disable the rules for running _freeze_importlib and pgen when
+ cross-compiling. The output of these programs is normally saved with the
+ source code anyway, and is still regenerated when doing a native build.
+ Patch by Xavier de Gaye.
-- Issue #22462: Fix pyexpat's creation of a dummy frame to make it
- appear in exception tracebacks.
+- Issue #27229: Fix the cross-compiling pgen rule for in-tree builds. Patch
+ by Xavier de Gaye.
-- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called
- with an iterator alive.
+- Issue #21668: Link audioop, _datetime, _ctypes_test modules to libm,
+ except on Mac OS X. Patch written by Xavier de Gaye.
-- Issue #11866: Eliminated race condition in the computation of names
- for new threads.
+- Issue #25702: A --with-lto configure option has been added that will
+ enable link time optimizations at build time during a make profile-opt.
+ Some compilers and toolchains are known to not produce stable code when
+ using LTO, be sure to test things thoroughly before relying on it.
+ It can provide a few % speed up over profile-opt alone.
-- Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules
- is mutated while iterating. Patch by Olivier Grisel.
+- Issue #26624: Adds validation of ucrtbase[d].dll version with warning
+ for old versions.
-- Issue #22219: The zipfile module CLI now adds entries for directories
- (including empty directories) in ZIP file.
+- Issue #17603: Avoid error about nonexistant fileblocks.o file by using a
+ lower-level check for st_blocks in struct stat.
-- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the
- environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows.
+- Issue #26079: Fixing the build output folder for tix-8.4.3.6. Patch by
+ Bjoern Thiel.
-- Issue #20076: Added non derived UTF-8 aliases to locale aliases table.
+- Issue #26465: Update Windows builds to use OpenSSL 1.0.2g.
-- Issue #20079: Added locales supported in glibc 2.18 to locale alias table.
+- Issue #24421: Compile Modules/_math.c once, before building extensions.
+ Previously it could fail to compile properly if the math and cmath builds
+ were concurrent.
-- Issue #22396: On 32-bit AIX platform, don't expose os.posix_fadvise() nor
- os.posix_fallocate() because their prototypes in system headers are wrong.
+- Issue #25348: Added ``--pgo`` and ``--pgo-job`` arguments to
+ ``PCbuild\build.bat`` for building with Profile-Guided Optimization. The
+ old ``PCbuild\build_pgo.bat`` script is now deprecated, and simply calls
+ ``PCbuild\build.bat --pgo %*``.
-- Issue #22517: When a io.BufferedRWPair object is deallocated, clear its
- weakrefs.
+- Issue #25827: Add support for building with ICC to ``configure``, including
+ a new ``--with-icc`` flag.
-- Issue #22448: Improve canceled timer handles cleanup to prevent
- unbound memory usage. Patch by Joshua Moore-Oliva.
+- Issue #25696: Fix installation of Python on UNIX with make -j9.
-- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no
- FD is registered.
+- Issue #26930: Update OS X 10.5+ 32-bit-only installer to build
+ and link with OpenSSL 1.0.2h.
-IDLE
-----
+- Issue #26268: Update Windows builds to use OpenSSL 1.0.2f.
-- Issue #20577: Configuration of the max line length for the FormatParagraph
- extension has been moved from the General tab of the Idle preferences dialog
- to the FormatParagraph tab of the Config Extensions dialog.
- Patch by Tal Einat.
+- Issue #25136: Support Apple Xcode 7's new textual SDK stub libraries.
-- Issue #16893: Update Idle doc chapter to match current Idle and add new
- information.
+- Issue #24324: Do not enable unreachable code warnings when using
+ gcc as the option does not work correctly in older versions of gcc
+ and has been silently removed as of gcc-4.5.
-- Issue #3068: Add Idle extension configuration dialog to Options menu.
- Changes are written to HOME/.idlerc/config-extensions.cfg.
- Original patch by Tal Einat.
+Windows
+-------
-- Issue #16233: A module browser (File : Class Browser, Alt+C) requires an
- editor window with a filename. When Class Browser is requested otherwise,
- from a shell, output window, or 'Untitled' editor, Idle no longer displays
- an error box. It now pops up an Open Module box (Alt+M). If a valid name
- is entered and a module is opened, a corresponding browser is also opened.
+- Issue #27053: Updates make_zip.py to correctly generate library ZIP file.
-- Issue #4832: Save As to type Python files automatically adds .py to the
- name you enter (even if your system does not display it). Some systems
- automatically add .txt when type is Text files.
+- Issue #26268: Update the prepare_ssl.py script to handle OpenSSL releases
+ that don't include the contents of the include directory (that is, 1.0.2e
+ and later).
-- Issue #21986: Code objects are not normally pickled by the pickle module.
- To match this, they are no longer pickled when running under Idle.
+- Issue #26071: bdist_wininst created binaries fail to start and find
+ 32bit Python
-- Issue #23180: Rename IDLE "Windows" menu item to "Window".
- Patch by Al Sweigart.
+- Issue #26073: Update the list of magic numbers in launcher
-Tests
------
+- Issue #26065: Excludes venv from library when generating embeddable
+ distro.
-- Issue #23392: Added tests for marshal C API that works with FILE*.
+Tools/Demos
+-----------
-- Issue #18982: Add tests for CLI of the calendar module.
+- Issue #26799: Fix python-gdb.py: don't get C types once when the Python code
+ is loaded, but get C types on demand. The C types can change if
+ python-gdb.py is loaded before the Python executable. Patch written by Thomas
+ Ilsche.
-- Issue #19548: Added some additional checks to test_codecs to ensure that
- statements in the updated documentation remain accurate. Patch by Martin
- Panter.
+- Issue #26271: Fix the Freeze tool to properly use flags passed through
+ configure. Patch by Daniel Shaulov.
-- Issue #22838: All test_re tests now work with unittest test discovery.
+- Issue #26489: Add dictionary unpacking support to Tools/parser/unparse.py.
+ Patch by Guo Ci Teo.
-- Issue #22173: Update lib2to3 tests to use unittest test discovery.
+- Issue #26316: Fix variable name typo in Argument Clinic.
-- Issue #16000: Convert test_curses to use unittest.
+Misc
+----
-- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not
- present. Patch by Remi Pointel.
+- Issue #17500, and https://github.com/python/pythondotorg/issues/945: Remove
+ unused and outdated icons.
-- Issue #22770: Prevent some Tk segfaults on OS X when running gui tests.
-- Issue #23211: Workaround test_logging failure on some OS X 10.6 systems.
+What's New in Python 3.5.1 final?
+=================================
-- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level
- values (like 0.9.8zc).
+Release date: 2015-12-06
-- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout.
+Core and Builtins
+-----------------
-Build
------
+- Issue #25709: Fixed problem with in-place string concatenation and
+ utf-8 cache.
-- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure
- script.
+Windows
+-------
-- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support
- SSL 3.
+- Issue #25715: Python 3.5.1 installer shows wrong upgrade path and incorrect
+ logic for launcher detection.
-- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by
- Jonathan Hosmer.
-- Issue #18096: Fix library order returned by python-config.
+What's New in Python 3.5.1 release candidate 1?
+===============================================
-- Issue #17219: Add library build dir for Python extension cross-builds.
+Release date: 2015-11-22
-- Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer.
+Core and Builtins
+-----------------
-C API
------
+- Issue #25630: Fix a possible segfault during argument parsing in functions
+ that accept filesystem paths.
-- Issue #22079: PyType_Ready() now checks that statically allocated type has
- no dynamically allocated bases.
+- Issue #23564: Fixed a partially broken sanity check in the _posixsubprocess
+ internals regarding how fds_to_pass were passed to the child. The bug had
+ no actual impact as subprocess.py already avoided it.
-Documentation
--------------
+- Issue #25388: Fixed tokenizer crash when processing undecodable source code
+ with a null byte.
-- Issue #19548: Update the codecs module documentation to better cover the
- distinction between text encodings and other codecs, together with other
- clarifications. Patch by Martin Panter.
+- Issue #25462: The hash of the key now is calculated only once in most
+ operations in C implementation of OrderedDict.
-- Issue #22914: Update the Python 2/3 porting HOWTO to describe a more automated
- approach.
+- Issue #22995: Default implementation of __reduce__ and __reduce_ex__ now
+ rejects builtin types with not defined __new__.
-- Issue #21514: The documentation of the json module now refers to new JSON RFC
- 7159 instead of obsoleted RFC 4627.
+- Issue #25555: Fix parser and AST: fill lineno and col_offset of "arg" node
+ when compiling AST from Python objects.
-Tools/Demos
------------
+- Issue #24802: Avoid buffer overreads when int(), float(), compile(), exec()
+ and eval() are passed bytes-like objects. These objects are not
+ necessarily terminated by a null byte, but the functions assumed they were.
-- Issue #22314: pydoc now works when the LINES environment variable is set.
+- Issue #24726: Fixed a crash and leaking NULL in repr() of OrderedDict that
+ was mutated by direct calls of dict methods.
-Windows
--------
+- Issue #25449: Iterating OrderedDict with keys with unstable hash now raises
+ KeyError in C implementations as well as in Python implementation.
-- Issue #17896: The Windows build scripts now expect external library sources
- to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``.
+- Issue #25395: Fixed crash when highly nested OrderedDict structures were
+ garbage collected.
-- Issue #17717: The Windows build scripts now use a copy of NASM pulled from
- svn.python.org to build OpenSSL.
+- Issue #25274: sys.setrecursionlimit() now raises a RecursionError if the new
+ recursion limit is too low depending at the current recursion depth. Modify
+ also the "lower-water mark" formula to make it monotonic. This mark is used
+ to decide when the overflowed flag of the thread state is reset.
-- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j.
+- Issue #24402: Fix input() to prompt to the redirected stdout when
+ sys.stdout.fileno() fails.
+- Issue #24806: Prevent builtin types that are not allowed to be subclassed from
+ being subclassed through multiple inheritance.
-What's New in Python 3.4.2?
-===========================
+- Issue #24848: Fixed a number of bugs in UTF-7 decoding of misformed data.
+
+- Issue #25280: Import trace messages emitted in verbose (-v) mode are no
+ longer formatted twice.
+
+- Issue #25003: On Solaris 11.3 or newer, os.urandom() now uses the
+ getrandom() function instead of the getentropy() function. The getentropy()
+ function is blocking to generate very good quality entropy, os.urandom()
+ doesn't need such high-quality entropy.
-Release date: 2014-10-06
+- Issue #25182: The stdprinter (used as sys.stderr before the io module is
+ imported at startup) now uses the backslashreplace error handler.
+
+- Issue #25131: Make the line number and column offset of set/dict literals and
+ comprehensions correspond to the opening brace.
+
+- Issue #25150: Hide the private _Py_atomic_xxx symbols from the public
+ Python.h header to fix a compilation error with OpenMP. PyThreadState_GET()
+ becomes an alias to PyThreadState_Get() to avoid ABI incompatibilies.
Library
-------
projects / python / commitdiff