Python 3.5.4 rc1

发布日期: 2017-07-23

安全性

• bpo-30730 [https://bugs.python.org/issue?@action=redirect&bpo=30730]: Prevent environment variables injection in subprocess on Windows. Prevent passing other environment variables and command arguments.

• bpo-30694 [https://bugs.python.org/issue?@action=redirect&bpo=30694]: Upgrade expat copy from 2.2.0 to 2.2.1 to get fixes of multiple security vulnerabilities including: CVE 2017-9233 [https://www.cve.org/CVERecord?id=CVE-2017-9233] (External entity infinite loop DoS), CVE 2016-9063 [https://www.cve.org/CVERecord?id=CVE-2016-9063] (Integer overflow, re-fix), CVE 2016-0718 [https://www.cve.org/CVERecord?id=CVE-2016-0718] (Fix regression bugs from 2.2.0's fix to CVE 2016-0718 [https://www.cve.org/CVERecord?id=CVE-2016-0718]) and CVE 2012-0876 [https://www.cve.org/CVERecord?id=CVE-2012-0876] (Counter hash flooding with SipHash). Note: the CVE 2016-5300 [https://www.cve.org/CVERecord?id=CVE-2016-5300] (Use os-specific entropy sources like getrandom) doesn't impact Python, since Python already gets entropy from the OS to set the expat secret using XML_SetHashSalt().

• bpo-30500 [https://bugs.python.org/issue?@action=redirect&bpo=30500]: Fix urllib.parse.splithost() to correctly parse fragments. For example, splithost('//127.0.0.1#@evil.com/') now correctly returns the 127.0.0.1 host, instead of treating @evil.com as the host in an authentication (login@host).

• bpo-29591 [https://bugs.python.org/issue?@action=redirect&bpo=29591]: Update expat copy from 2.1.1 to 2.2.0 to get fixes of CVE 2016-0718 [https://www.cve.org/CVERecord?id=CVE-2016-0718] and CVE 2016-4472 [https://www.cve.org/CVERecord?id=CVE-2016-4472]. See https://sourceforge.net/p/expat/bugs/537/ for more information.

核心与内置函数

• bpo-30876 [https://bugs.python.org/issue?@action=redirect&bpo=30876]: Relative import from unloaded package now reimports the package instead of failing with SystemError. Relative import from non-package now fails with ImportError rather than SystemError.

• bpo-30765 [https://bugs.python.org/issue?@action=redirect&bpo=30765]: Avoid blocking in pthread_mutex_lock() when PyThread_acquire_lock() is asked not to block.

• bpo-27945 [https://bugs.python.org/issue?@action=redirect&bpo=27945]: Fixed various segfaults with dict when input collections are mutated during searching, inserting or comparing. Based on patches by Duane Griffin and Tim Mitchell.

• bpo-25794 [https://bugs.python.org/issue?@action=redirect&bpo=25794]: Fixed type.setattr() and type.delattr() for non-interned attribute names. Based on patch by Eryk Sun.

• bpo-29935 [https://bugs.python.org/issue?@action=redirect&bpo=29935]: Fixed error messages in the index() method of tuple, list and deque when pass indices of wrong type.

• bpo-28876 [https://bugs.python.org/issue?@action=redirect&bpo=28876]: bool(range) works even if len(range) raises OverflowError.

• bpo-29600 [https://bugs.python.org/issue?@action=redirect&bpo=29600]: Fix wrapping coroutine return values in StopIteration.

• bpo-29537 [https://bugs.python.org/issue?@action=redirect&bpo=29537]: Restore runtime compatibility with bytecode files generated by CPython 3.5.0 to 3.5.2, and adjust the eval loop to avoid the problems that could be caused by the malformed variant of the BUILD_MAP_UNPACK_WITH_CALL opcode that they may contain. Patch by Petr Viktorin, Serhiy Storchaka, and Nick Coghlan.

• bpo-28598 [https://bugs.python.org/issue?@action=redirect&bpo=28598]: Support rmod for subclasses of str being called before str.mod. Patch by Martijn Pieters.

• bpo-29602 [https://bugs.python.org/issue?@action=redirect&bpo=29602]: Fix incorrect handling of signed zeros in complex constructor for complex subclasses and for inputs having a complex method. Patch by Serhiy Storchaka.

• bpo-29347 [https://bugs.python.org/issue?@action=redirect&bpo=29347]: Fixed possibly dereferencing undefined pointers when creating weakref objects.

• bpo-29438 [https://bugs.python.org/issue?@action=redirect&bpo=29438]: Fixed use-after-free problem in key sharing dict.

• bpo-29319 [https://bugs.python.org/issue?@action=redirect&bpo=29319]: Prevent RunMainFromImporter overwriting sys.path[0].

• bpo-29337 [https://bugs.python.org/issue?@action=redirect&bpo=29337]: Fixed possible BytesWarning when compare the code objects. Warnings could be emitted at compile time.

• bpo-29478 [https://bugs.python.org/issue?@action=redirect&bpo=29478]: If max_line_length=None is specified while using the Compat32 policy, it is no longer ignored. Patch by Mircea Cosbuc.

库

• bpo-29403 [https://bugs.python.org/issue?@action=redirect&bpo=29403]: Fix unittest.mock's autospec to not fail on method-bound builtin functions. Patch by Aaron Gallagher.

• bpo-30961 [https://bugs.python.org/issue?@action=redirect&bpo=30961]: Fix decrementing a borrowed reference in tracemalloc.

• bpo-30886 [https://bugs.python.org/issue?@action=redirect&bpo=30886]: Fix multiprocessing.Queue.join_thread(): it now waits until the thread completes, even if the thread was started by the same process which created the queue.

• bpo-29854 [https://bugs.python.org/issue?@action=redirect&bpo=29854]: Fix segfault in readline when using readline's history-size option. Patch by Nir Soffer.

• bpo-30807 [https://bugs.python.org/issue?@action=redirect&bpo=30807]: signal.setitimer() may disable the timer when passed a tiny value. Tiny values (such as 1e-6) are valid non-zero values for setitimer(), which is specified as taking microsecond-resolution intervals. However, on some platform, our conversion routine could convert 1e-6 into a zero interval, therefore disabling the timer instead of (re-)scheduling it.

• bpo-30441 [https://bugs.python.org/issue?@action=redirect&bpo=30441]: Fix bug when modifying os.environ while iterating over it

• bpo-30532 [https://bugs.python.org/issue?@action=redirect&bpo=30532]: Fix email header value parser dropping folding white space in certain cases.

• bpo-29169 [https://bugs.python.org/issue?@action=redirect&bpo=29169]: Update zlib to 1.2.11.

• bpo-30879 [https://bugs.python.org/issue?@action=redirect&bpo=30879]: os.listdir() and os.scandir() now emit bytes names when called with bytes-like argument.

• bpo-30746 [https://bugs.python.org/issue?@action=redirect&bpo=30746]: Prohibited the '=' character in environment variable names in os.putenv() and os.spawn*().

• bpo-29755 [https://bugs.python.org/issue?@action=redirect&bpo=29755]: Fixed the lgettext() family of functions in the gettext module. They now always return bytes.

• bpo-30645 [https://bugs.python.org/issue?@action=redirect&bpo=30645]: Fix path calculation in imp.load_package(), fixing it for cases when a package is only shipped with bytecodes. Patch by Alexandru Ardelean.

• bpo-23890 [https://bugs.python.org/issue?@action=redirect&bpo=23890]: unittest.TestCase.assertRaises() now manually breaks a reference cycle to not keep objects alive longer than expected.

• bpo-30149 [https://bugs.python.org/issue?@action=redirect&bpo=30149]: inspect.signature() now supports callables with variable-argument parameters wrapped with partialmethod. Patch by Donghee Na.

• bpo-29931 [https://bugs.python.org/issue?@action=redirect&bpo=29931]: Fixed comparison check for ipaddress.ip_interface objects. Patch by Sanjay Sundaresan.

• bpo-24484 [https://bugs.python.org/issue?@action=redirect&bpo=24484]: Avoid race condition in multiprocessing cleanup.

• bpo-28994 [https://bugs.python.org/issue?@action=redirect&bpo=28994]: The traceback no longer displayed for SystemExit raised in a callback registered by atexit.

• bpo-30508 [https://bugs.python.org/issue?@action=redirect&bpo=30508]: Don't log exceptions if Task/Future "cancel()" method was called.

• bpo-28556 [https://bugs.python.org/issue?@action=redirect&bpo=28556]: Updates to typing module: Add generic AsyncContextManager, add support for ContextManager on all versions. Original PRs by Jelle Zijlstra and Ivan Levkivskyi

• bpo-29870 [https://bugs.python.org/issue?@action=redirect&bpo=29870]: Fix ssl sockets leaks when connection is aborted in asyncio/ssl implementation. Patch by Michaël Sghaïer.

• bpo-29743 [https://bugs.python.org/issue?@action=redirect&bpo=29743]: Closing transport during handshake process leaks open socket. Patch by Nikolay Kim

• bpo-27585 [https://bugs.python.org/issue?@action=redirect&bpo=27585]: Fix waiter cancellation in asyncio.Lock. Patch by Mathieu Sornay.

• bpo-30418 [https://bugs.python.org/issue?@action=redirect&bpo=30418]: On Windows, subprocess.Popen.communicate() now also ignore EINVAL on stdin.write() if the child process is still running but closed the pipe.

• bpo-30378 [https://bugs.python.org/issue?@action=redirect&bpo=30378]: Fix the problem that logging.handlers.SysLogHandler cannot handle IPv6 addresses.

• bpo-29960 [https://bugs.python.org/issue?@action=redirect&bpo=29960]: Preserve generator state when _random.Random.setstate() raises an exception. Patch by Bryan Olson.

• bpo-30414 [https://bugs.python.org/issue?@action=redirect&bpo=30414]: multiprocessing.Queue._feed background running thread do not break from main loop on exception.

• bpo-30003 [https://bugs.python.org/issue?@action=redirect&bpo=30003]: Fix handling escape characters in HZ codec. Based on patch by Ma Lin.

• bpo-30301 [https://bugs.python.org/issue?@action=redirect&bpo=30301]: Fix AttributeError when using SimpleQueue.empty() under spawn and forkserver start methods.

• bpo-30329 [https://bugs.python.org/issue?@action=redirect&bpo=30329]: imaplib and poplib now catch the Windows socket WSAEINVAL error (code 10022) on shutdown(SHUT_RDWR): An invalid operation was attempted. This error occurs sometimes on SSL connections.

• bpo-30375 [https://bugs.python.org/issue?@action=redirect&bpo=30375]: Warnings emitted when compile a regular expression now always point to the line in the user code. Previously they could point into inners of the re module if emitted from inside of groups or conditionals.

• bpo-30048 [https://bugs.python.org/issue?@action=redirect&bpo=30048]: Fixed Task.cancel() can be ignored when the task is running coroutine and the coroutine returned without any more await.

• bpo-29990 [https://bugs.python.org/issue?@action=redirect&bpo=29990]: Fix range checking in GB18030 decoder. Original patch by Ma Lin.

• bpo-26293 [https://bugs.python.org/issue?@action=redirect&bpo=26293]: Change resulted because of zipfile breakage. (See also: bpo-29094 [https://bugs.python.org/issue?@action=redirect&bpo=29094])

• bpo-30243 [https://bugs.python.org/issue?@action=redirect&bpo=30243]: Removed the init methods of json's scanner and encoder. Misusing them could cause memory leaks or crashes. Now scanner and encoder objects are completely initialized in the new_ methods.

• bpo-30185 [https://bugs.python.org/issue?@action=redirect&bpo=30185]: Avoid KeyboardInterrupt tracebacks in forkserver helper process when Ctrl-C is received.

• bpo-28556 [https://bugs.python.org/issue?@action=redirect&bpo=28556]: Various updates to typing module: add typing.NoReturn type, use WrapperDescriptorType, minor bugfixes. Original PRs by Jim Fasarakis-Hilliard and Ivan Levkivskyi.

• bpo-30205 [https://bugs.python.org/issue?@action=redirect&bpo=30205]: Fix getsockname() for unbound AF_UNIX sockets on Linux.

• bpo-30070 [https://bugs.python.org/issue?@action=redirect&bpo=30070]: Fixed leaks and crashes in errors handling in the parser module.

• bpo-30061 [https://bugs.python.org/issue?@action=redirect&bpo=30061]: Fixed crashes in IOBase methods next() and readlines() when readline() or next() respectively return non-sizeable object. Fixed possible other errors caused by not checking results of PyObject_Size(), PySequence_Size(), or PyMapping_Size().

• bpo-30068 [https://bugs.python.org/issue?@action=redirect&bpo=30068]: io.IOBase.readlines will check if it's closed first when hint is present.

• bpo-29694 [https://bugs.python.org/issue?@action=redirect&bpo=29694]: Fixed race condition in pathlib mkdir with flags parents=True. Patch by Armin Rigo.

• bpo-29692 [https://bugs.python.org/issue?@action=redirect&bpo=29692]: Fixed arbitrary unchaining of RuntimeError exceptions in contextlib.contextmanager. Patch by Siddharth Velankar.

• bpo-29998 [https://bugs.python.org/issue?@action=redirect&bpo=29998]: Pickling and copying ImportError now preserves name and path attributes.

• bpo-29942 [https://bugs.python.org/issue?@action=redirect&bpo=29942]: Fix a crash in itertools.chain.from_iterable when encountering long runs of empty iterables.

• bpo-27863 [https://bugs.python.org/issue?@action=redirect&bpo=27863]: Fixed multiple crashes in ElementTree caused by race conditions and wrong types.

• bpo-28699 [https://bugs.python.org/issue?@action=redirect&bpo=28699]: Fixed a bug in pools in multiprocessing.pool that raising an exception at the very first of an iterable may swallow the exception or make the program hang. Patch by Davin Potts and Xiang Zhang.

• bpo-25803 [https://bugs.python.org/issue?@action=redirect&bpo=25803]: Avoid incorrect errors raised by Path.mkdir(exist_ok=True) when the OS gives priority to errors such as EACCES over EEXIST.

• bpo-29861 [https://bugs.python.org/issue?@action=redirect&bpo=29861]: Release references to tasks, their arguments and their results as soon as they are finished in multiprocessing.Pool.

• bpo-29884 [https://bugs.python.org/issue?@action=redirect&bpo=29884]: faulthandler: Restore the old sigaltstack during teardown. Patch by Christophe Zeitouny.

• bpo-25455 [https://bugs.python.org/issue?@action=redirect&bpo=25455]: Fixed crashes in repr of recursive buffered file-like objects.

• bpo-29800 [https://bugs.python.org/issue?@action=redirect&bpo=29800]: Fix crashes in partial.repr if the keys of partial.keywords are not strings. Patch by Michael Seifert.

• bpo-29742 [https://bugs.python.org/issue?@action=redirect&bpo=29742]: get_extra_info() raises exception if get called on closed ssl transport. Patch by Nikolay Kim.

• bpo-8256 [https://bugs.python.org/issue?@action=redirect&bpo=8256]: Fixed possible failing or crashing input() if attributes "encoding" or "errors" of sys.stdin or sys.stdout are not set or are not strings.

• bpo-28298 [https://bugs.python.org/issue?@action=redirect&bpo=28298]: Fix a bug that prevented array 'Q', 'L' and 'I' from accepting big intables (objects that have int) as elements. Patch by Oren Milman.

• bpo-29615 [https://bugs.python.org/issue?@action=redirect&bpo=29615]: SimpleXMLRPCDispatcher no longer chains KeyError (or any other exception) to exception(s) raised in the dispatched methods. Patch by Petr Motejlek.

• bpo-29704 [https://bugs.python.org/issue?@action=redirect&bpo=29704]: asyncio.subprocess.SubprocessStreamProtocol no longer closes before all pipes are closed.

• bpo-29703 [https://bugs.python.org/issue?@action=redirect&bpo=29703]: Fix asyncio to support instantiation of new event loops in child processes.

• bpo-29376 [https://bugs.python.org/issue?@action=redirect&bpo=29376]: Fix assertion error in threading._DummyThread.is_alive().

• bpo-29110 [https://bugs.python.org/issue?@action=redirect&bpo=29110]: Fix file object leak in aifc.open() when file is given as a filesystem path and is not in valid AIFF format. Patch by Anthony Zhang.

• bpo-28961 [https://bugs.python.org/issue?@action=redirect&bpo=28961]: Fix unittest.mock._Call helper: don't ignore the name parameter anymore. Patch written by Jiajun Huang.

• bpo-29532 [https://bugs.python.org/issue?@action=redirect&bpo=29532]: Altering a kwarg dictionary passed to functools.partial() no longer affects a partial object after creation.

• bpo-28556 [https://bugs.python.org/issue?@action=redirect&bpo=28556]: Various updates to typing module: typing.Counter, typing.ChainMap, improved ABC caching, etc. Original PRs by Jelle Zijlstra, Ivan Levkivskyi, Manuel Krebber, and Łukasz Langa.

• bpo-29100 [https://bugs.python.org/issue?@action=redirect&bpo=29100]: Fix datetime.fromtimestamp() regression introduced in Python 3.6.0: check minimum and maximum years.

• bpo-29519 [https://bugs.python.org/issue?@action=redirect&bpo=29519]: Fix weakref spewing exceptions during interpreter shutdown when used with a rare combination of multiprocessing and custom codecs.

• bpo-29416 [https://bugs.python.org/issue?@action=redirect&bpo=29416]: Prevent infinite loop in pathlib.Path.mkdir

• bpo-29444 [https://bugs.python.org/issue?@action=redirect&bpo=29444]: Fixed out-of-bounds buffer access in the group() method of the match object. Based on patch by WGH.

• bpo-29335 [https://bugs.python.org/issue?@action=redirect&bpo=29335]: Fix subprocess.Popen.wait() when the child process has exited to a stopped instead of terminated state (ex: when under ptrace).

• bpo-29290 [https://bugs.python.org/issue?@action=redirect&bpo=29290]: Fix a regression in argparse that help messages would wrap at non-breaking spaces.

• bpo-28735 [https://bugs.python.org/issue?@action=redirect&bpo=28735]: Fixed the comparison of mock.MagickMock with mock.ANY.

• bpo-29011 [https://bugs.python.org/issue?@action=redirect&bpo=29011]: Fix an important omission by adding Deque to the typing module.

• bpo-29219 [https://bugs.python.org/issue?@action=redirect&bpo=29219]: Fixed infinite recursion in the repr of uninitialized ctypes.CDLL instances.

• bpo-28969 [https://bugs.python.org/issue?@action=redirect&bpo=28969]: Fixed race condition in C implementation of functools.lru_cache. KeyError could be raised when cached function with full cache was simultaneously called from different threads with the same uncached arguments.

• bpo-29142 [https://bugs.python.org/issue?@action=redirect&bpo=29142]: In urllib.request, suffixes in no_proxy environment variable with leading dots could match related hostnames again (e.g. .b.c matches a.b.c). Patch by Milan Oberkirch.

文档

• bpo-30176 [https://bugs.python.org/issue?@action=redirect&bpo=30176]: Add missing attribute related constants in curses documentation.

• bpo-26985 [https://bugs.python.org/issue?@action=redirect&bpo=26985]: Add missing info of code object in inspect documentation.

• bpo-28929 [https://bugs.python.org/issue?@action=redirect&bpo=28929]: Link the documentation to its source file on GitHub.

• bpo-25008 [https://bugs.python.org/issue?@action=redirect&bpo=25008]: Document smtpd.py as effectively deprecated and add a pointer to aiosmtpd, a third-party asyncio-based replacement.

• bpo-26355 [https://bugs.python.org/issue?@action=redirect&bpo=26355]: Add canonical header link on each page to corresponding major version of the documentation. Patch by Matthias Bussonnier.

• bpo-29349 [https://bugs.python.org/issue?@action=redirect&bpo=29349]: Fix Python 2 syntax in code for building the documentation.

测试

• bpo-30822 [https://bugs.python.org/issue?@action=redirect&bpo=30822]: Fix regrtest command line parser to allow passing -u extralargefile to run test_zipfile64.

• bpo-30383 [https://bugs.python.org/issue?@action=redirect&bpo=30383]: regrtest: Enhance regrtest and backport features from the master branch. Add options: —coverage, —testdir, —list-tests (list test files, don't run them), —list-cases (list test identifiers, don't run them, bpo-30523 [https://bugs.python.org/issue?@action=redirect&bpo=30523]), —matchfile (load a list of test filters from a text file, bpo-30540 [https://bugs.python.org/issue?@action=redirect&bpo=30540]), —slowest (alias to —slow). Enhance output: add timestamp, test result, currently running tests, "Tests result: xxx" summary with total duration, etc. Fix reference leak hunting in regrtest, —huntrleaks: regrtest now warms up caches, create explicitly all internal singletons which are created on demand to prevent false positives when checking for reference leaks. (bpo-30675 [https://bugs.python.org/issue?@action=redirect&bpo=30675]).

• bpo-30357 [https://bugs.python.org/issue?@action=redirect&bpo=30357]: test_thread: setUp() now uses support.threading_setup() and support.threading_cleanup() to wait until threads complete to avoid random side effects on following tests. Initial patch written by Grzegorz Grzywacz.

• bpo-28087 [https://bugs.python.org/issue?@action=redirect&bpo=28087]: Skip test_asyncore and test_eintr poll failures on macOS. Skip some tests of select.poll when running on macOS due to unresolved issues with the underlying system poll function on some macOS versions.

• bpo-30197 [https://bugs.python.org/issue?@action=redirect&bpo=30197]: Enhanced functions swap_attr() and swap_item() in the test.support module. They now work when delete replaced attribute or item inside the with statement. The old value of the attribute or item (or None if it doesn't exist) now will be assigned to the target of the "as" clause, if there is one.

• bpo-29571 [https://bugs.python.org/issue?@action=redirect&bpo=29571]: to match the behaviour of the re.LOCALE flag, test_re.test_locale_flag now uses locale.getpreferredencoding(False) to determine the candidate encoding for the test regex (allowing it to correctly skip the test when the default locale encoding is a multibyte encoding)

构建

• bpo-29243 [https://bugs.python.org/issue?@action=redirect&bpo=29243]: Prevent unnecessary rebuilding of Python during make test, make install and some other make targets when configured with --enable-optimizations.

• bpo-23404 [https://bugs.python.org/issue?@action=redirect&bpo=23404]: Don't regenerate generated files based on file modification time anymore: the action is now explicit. Replace make touch with make regen-all.

• bpo-29643 [https://bugs.python.org/issue?@action=redirect&bpo=29643]: Fix --enable-optimization didn't work.

Windows

• bpo-30687 [https://bugs.python.org/issue?@action=redirect&bpo=30687]: Locate msbuild.exe on Windows when building rather than vcvarsall.bat

• bpo-29392 [https://bugs.python.org/issue?@action=redirect&bpo=29392]: Prevent crash when passing invalid arguments into msvcrt module.

C API

• bpo-27867 [https://bugs.python.org/issue?@action=redirect&bpo=27867]: Function PySlice_GetIndicesEx() is replaced with a macro if Py_LIMITED_API is set to the value between 0x03050400 and 0x03060000 (not including) or 0x03060100 or higher.

• bpo-29083 [https://bugs.python.org/issue?@action=redirect&bpo=29083]: Fixed the declaration of some public API functions. PyArg_VaParse() and PyArg_VaParseTupleAndKeywords() were not available in limited API. PyArg_ValidateKeywordArguments(), PyArg_UnpackTuple() and Py_BuildValue() were not available in limited API of version < 3.3 when PY_SSIZE_T_CLEAN is defined.

Python 3.5.3 正式版

发布日期: 2017-01-17

There were no code changes between 3.5.3rc1 and 3.5.3 final.

Python 3.5.3 rc1

发布日期: 2017-01-02

安全性

• bpo-27278 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-22636 [https://bugs.python.org/issue?@action=redirect&bpo=22636]: Avoid shell injection problems with ctypes.util.find_library().

核心与内置函数

• bpo-29073 [https://bugs.python.org/issue?@action=redirect&bpo=29073]: bytearray formatting no longer truncates on first null byte.

• bpo-28932 [https://bugs.python.org/issue?@action=redirect&bpo=28932]: Do not include if it does not exist.

• bpo-28147 [https://bugs.python.org/issue?@action=redirect&bpo=28147]: Fix a memory leak in split-table dictionaries: setattr() must not convert combined table into split table.

• bpo-25677 [https://bugs.python.org/issue?@action=redirect&bpo=25677]: Correct the positioning of the syntax error caret for indented blocks. Based on patch by Michael Layzell.

• bpo-29000 [https://bugs.python.org/issue?@action=redirect&bpo=29000]: Fixed bytes formatting of octals with zero padding in alternate form.

• bpo-28512 [https://bugs.python.org/issue?@action=redirect&bpo=28512]: Fixed setting the offset attribute of SyntaxError by PyErr_SyntaxLocationEx() and PyErr_SyntaxLocationObject().

• bpo-28991 [https://bugs.python.org/issue?@action=redirect&bpo=28991]: functools.lru_cache() was susceptible to an obscure reentrancy bug caused by a monkey-patched len() function.

• bpo-28648 [https://bugs.python.org/issue?@action=redirect&bpo=28648]: Fixed crash in Py_DecodeLocale() in debug build on Mac OS X when decode astral characters. Patch by Xiang Zhang.

• bpo-19398 [https://bugs.python.org/issue?@action=redirect&bpo=19398]: Extra slash no longer added to sys.path components in case of empty compile-time PYTHONPATH components.

• bpo-28426 [https://bugs.python.org/issue?@action=redirect&bpo=28426]: Fixed potential crash in PyUnicode_AsDecodedObject() in debug build.

• bpo-23782 [https://bugs.python.org/issue?@action=redirect&bpo=23782]: Fixed possible memory leak in PyTracebackAdd() and exception loss in PyTraceBack_Here().

• bpo-28379 [https://bugs.python.org/issue?@action=redirect&bpo=28379]: Added sanity checks and tests for PyUnicode_CopyCharacters(). Patch by Xiang Zhang.

• bpo-28376 [https://bugs.python.org/issue?@action=redirect&bpo=28376]: The type of long range iterator is now registered as Iterator. Patch by Oren Milman.

• bpo-28376 [https://bugs.python.org/issue?@action=redirect&bpo=28376]: The constructor of range_iterator now checks that step is not 0. Patch by Oren Milman.

• bpo-26906 [https://bugs.python.org/issue?@action=redirect&bpo=26906]: Resolving special methods of uninitialized type now causes implicit initialization of the type instead of a fail.

• bpo-18287 [https://bugs.python.org/issue?@action=redirect&bpo=18287]: PyType_Ready() now checks that tp_name is not NULL. Original patch by Niklas Koep.

• bpo-24098 [https://bugs.python.org/issue?@action=redirect&bpo=24098]: Fixed possible crash when AST is changed in process of compiling it.

• bpo-28350 [https://bugs.python.org/issue?@action=redirect&bpo=28350]: String constants with null character no longer interned.

• bpo-26617 [https://bugs.python.org/issue?@action=redirect&bpo=26617]: Fix crash when GC runs during weakref callbacks.

• bpo-27942 [https://bugs.python.org/issue?@action=redirect&bpo=27942]: String constants now interned recursively in tuples and frozensets.

• bpo-21578 [https://bugs.python.org/issue?@action=redirect&bpo=21578]: Fixed misleading error message when ImportError called with invalid keyword args.

• bpo-28203 [https://bugs.python.org/issue?@action=redirect&bpo=28203]: Fix incorrect type in error message from complex(1.0, {2:3}). Patch by Soumya Sharma.

• bpo-27955 [https://bugs.python.org/issue?@action=redirect&bpo=27955]: Fallback on reading devurandom device when the getrandom() syscall fails with EPERM, for example when blocked by SECCOMP.

• bpo-28131 [https://bugs.python.org/issue?@action=redirect&bpo=28131]: Fix a regression in zipimport's compile_source(). zipimport should use the same optimization level as the interpreter.

• bpo-25221 [https://bugs.python.org/issue?@action=redirect&bpo=25221]: Fix corrupted result from PyLong_FromLong(0) when Python is compiled with NSMALLPOSINTS = 0.

• bpo-25758 [https://bugs.python.org/issue?@action=redirect&bpo=25758]: Prevents zipimport from unnecessarily encoding a filename (patch by Eryk Sun)

• bpo-28189 [https://bugs.python.org/issue?@action=redirect&bpo=28189]: dictitems_contains no longer swallows compare errors. (Patch by Xiang Zhang)

• bpo-27812 [https://bugs.python.org/issue?@action=redirect&bpo=27812]: Properly clear out a generator's frame's backreference to the generator to prevent crashes in frame.clear().

• bpo-27811 [https://bugs.python.org/issue?@action=redirect&bpo=27811]: Fix a crash when a coroutine that has not been awaited is finalized with warnings-as-errors enabled.

• bpo-27587 [https://bugs.python.org/issue?@action=redirect&bpo=27587]: Fix another issue found by PVS-Studio: Null pointer check after use of 'def' in PyStateAddModule(). Initial patch by Christian Heimes.

• bpo-26020 [https://bugs.python.org/issue?@action=redirect&bpo=26020]: set literal evaluation order did not match documented behaviour.

• bpo-27782 [https://bugs.python.org/issue?@action=redirect&bpo=27782]: Multiphase 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.

• bpo-27936 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27487 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27558 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27419 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27083 [https://bugs.python.org/issue?@action=redirect&bpo=27083]: Respect the PYTHONCASEOK environment variable under Windows.

• bpo-27514 [https://bugs.python.org/issue?@action=redirect&bpo=27514]: Make having too many statically nested blocks a SyntaxError instead of SystemError.

• bpo-27473 [https://bugs.python.org/issue?@action=redirect&bpo=27473]: Fixed possible integer overflow in bytes and bytearray concatenations. Patch by Xiang Zhang.

• bpo-27507 [https://bugs.python.org/issue?@action=redirect&bpo=27507]: Add integer overflow check in bytearray.extend(). Patch by Xiang Zhang.

• bpo-27581 [https://bugs.python.org/issue?@action=redirect&bpo=27581]: Don't rely on wrapping for overflow check in PySequence_Tuple(). Patch by Xiang Zhang.

• bpo-27443 [https://bugs.python.org/issue?@action=redirect&bpo=27443]: lengthhint_() of bytearray iterators no longer return a negative integer for a resized bytearray.

• bpo-27942 [https://bugs.python.org/issue?@action=redirect&bpo=27942]: Fix memory leak in codeobject.c

库

• bpo-15812 [https://bugs.python.org/issue?@action=redirect&bpo=15812]: inspect.getframeinfo() now correctly shows the first line of a context. Patch by Sam Breese.

• bpo-29094 [https://bugs.python.org/issue?@action=redirect&bpo=29094]: Offsets in a ZIP file created with extern file object and modes "w" and "x" now are relative to the start of the file.

• bpo-13051 [https://bugs.python.org/issue?@action=redirect&bpo=13051]: Fixed recursion errors in large or resized curses.textpad.Textbox. Based on patch by Tycho Andersen.

• bpo-29119 [https://bugs.python.org/issue?@action=redirect&bpo=29119]: Fix weakrefs in the pure python version of collections.OrderedDict move_to_end() method. Contributed by Andra Bogildea.

• bpo-9770 [https://bugs.python.org/issue?@action=redirect&bpo=9770]: curses.ascii predicates now work correctly with negative integers.

• bpo-28427 [https://bugs.python.org/issue?@action=redirect&bpo=28427]: old keys should not remove new values from WeakValueDictionary when collecting from another thread.

• bpo-28923 [https://bugs.python.org/issue?@action=redirect&bpo=28923]: Remove editor artifacts from Tix.py.

• bpo-28871 [https://bugs.python.org/issue?@action=redirect&bpo=28871]: Fixed a crash when deallocate deep ElementTree.

• bpo-19542 [https://bugs.python.org/issue?@action=redirect&bpo=19542]: Fix bugs in WeakValueDictionary.setdefault() and WeakValueDictionary.pop() when a GC collection happens in another thread.

• bpo-20191 [https://bugs.python.org/issue?@action=redirect&bpo=20191]: Fixed a crash in resource.prlimit() when pass a sequence that doesn't own its elements as limits.

• bpo-28779 [https://bugs.python.org/issue?@action=redirect&bpo=28779]: multiprocessing.set_forkserver_preload() would crash the forkserver process if a preloaded module instantiated some multiprocessing objects such as locks.

• bpo-28847 [https://bugs.python.org/issue?@action=redirect&bpo=28847]: dbm.dumb now supports reading readonly files and no longer writes the index file when it is not changed.

• bpo-25659 [https://bugs.python.org/issue?@action=redirect&bpo=25659]: In ctypes, prevent a crash calling the from_buffer() and from_buffer_copy() methods on abstract classes like Array.

• bpo-28732 [https://bugs.python.org/issue?@action=redirect&bpo=28732]: Fix crash in os.spawnv() with no elements in args

• bpo-28485 [https://bugs.python.org/issue?@action=redirect&bpo=28485]: Always raise ValueError for negative compileall.compile_dir(workers=…) parameter, even when multithreading is unavailable.

• bpo-28387 [https://bugs.python.org/issue?@action=redirect&bpo=28387]: Fixed possible crash in _io.TextIOWrapper deallocator when the garbage collector is invoked in other thread. Based on patch by Sebastian Cufre.

• bpo-27517 [https://bugs.python.org/issue?@action=redirect&bpo=27517]: LZMA compressor and decompressor no longer raise exceptions if given empty data twice. Patch by Benjamin Fogle.

• bpo-28549 [https://bugs.python.org/issue?@action=redirect&bpo=28549]: Fixed segfault in curses's addch() with ncurses6.

• bpo-28449 [https://bugs.python.org/issue?@action=redirect&bpo=28449]: tarfile.open() with mode "r" or "r:" now tries to open a tar file with compression before trying to open it without compression. Otherwise it had 50% chance failed with ignore_zeros=True.

• bpo-23262 [https://bugs.python.org/issue?@action=redirect&bpo=23262]: The webbrowser module now supports Firefox 36+ and derived browsers. Based on patch by Oleg Broytman.

• bpo-27939 [https://bugs.python.org/issue?@action=redirect&bpo=27939]: Fixed bugs in tkinter.ttk.LabeledScale and tkinter.Scale caused by representing the scale as float value internally in Tk. tkinter.IntVar now works if float value is set to underlying Tk variable.

• bpo-28255 [https://bugs.python.org/issue?@action=redirect&bpo=28255]: calendar.TextCalendar().prmonth() no longer prints a space at the start of new line after printing a month's calendar. Patch by Xiang Zhang.

• bpo-20491 [https://bugs.python.org/issue?@action=redirect&bpo=20491]: The textwrap.TextWrapper class now honors non-breaking spaces. Based on patch by Kaarle Ritvanen.

• bpo-28353 [https://bugs.python.org/issue?@action=redirect&bpo=28353]: os.fwalk() no longer fails on broken links.

• bpo-25464 [https://bugs.python.org/issue?@action=redirect&bpo=25464]: Fixed HList.header_exists() in tkinter.tix module by addin a workaround to Tix library bug.

• bpo-28488 [https://bugs.python.org/issue?@action=redirect&bpo=28488]: shutil.make_archive() no longer add entry "./" to ZIP archive.

• bpo-24452 [https://bugs.python.org/issue?@action=redirect&bpo=24452]: Make webbrowser support Chrome on Mac OS X.

• bpo-20766 [https://bugs.python.org/issue?@action=redirect&bpo=20766]: Fix references leaked by pdb in the handling of SIGINT handlers.

• bpo-26293 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-28321 [https://bugs.python.org/issue?@action=redirect&bpo=28321]: Fixed writing non-BMP characters with binary format in plistlib.

• bpo-28322 [https://bugs.python.org/issue?@action=redirect&bpo=28322]: Fixed possible crashes when unpickle itertools objects from incorrect pickle data. Based on patch by John Leitch.

• Fix possible integer overflows and crashes in the mmap module with unusual usage patterns.

• bpo-1703178 [https://bugs.python.org/issue?@action=redirect&bpo=1703178]: Fix the ability to pass the —link-objects option to the distutils build_ext command.

• bpo-28253 [https://bugs.python.org/issue?@action=redirect&bpo=28253]: Fixed calendar functions for extreme months: 0001-01 and 9999-12. Methods itermonthdays() and itermonthdays2() are reimplemented so that they don't call itermonthdates() which can cause datetime.date under/overflow.

• bpo-28275 [https://bugs.python.org/issue?@action=redirect&bpo=28275]: Fixed possible use after free in the decompress() methods of the LZMADecompressor and BZ2Decompressor classes. Original patch by John Leitch.

• bpo-27897 [https://bugs.python.org/issue?@action=redirect&bpo=27897]: Fixed possible crash in sqlite3.Connection.create_collation() if pass invalid string-like object as a name. Patch by Xiang Zhang.

• bpo-18893 [https://bugs.python.org/issue?@action=redirect&bpo=18893]: Fix invalid exception handling in Lib/ctypes/macholib/dyld.py. Patch by Madison May.

• bpo-27611 [https://bugs.python.org/issue?@action=redirect&bpo=27611]: Fixed support of default root window in the tkinter.tix module.

• bpo-27348 [https://bugs.python.org/issue?@action=redirect&bpo=27348]: In the traceback module, restore the formatting of exception messages like "Exception: None". This fixes a regression introduced in 3.5a2.

• bpo-25651 [https://bugs.python.org/issue?@action=redirect&bpo=25651]: Allow false values to be used for msg parameter of subTest().

• bpo-27932 [https://bugs.python.org/issue?@action=redirect&bpo=27932]: Prevent memory leak in win32_ver().

• Fix UnboundLocalError in socket._sendfileusesendfile.

• bpo-28075 [https://bugs.python.org/issue?@action=redirect&bpo=28075]: Check for ERROR_ACCESS_DENIED in Windows implementation of os.stat(). Patch by Eryk Sun.

• bpo-25270 [https://bugs.python.org/issue?@action=redirect&bpo=25270]: Prevent codecs.escape_encode() from raising SystemError when an empty bytestring is passed.

• bpo-28181 [https://bugs.python.org/issue?@action=redirect&bpo=28181]: Get antigravity over HTTPS. Patch by Kaartic Sivaraam.

• bpo-25895 [https://bugs.python.org/issue?@action=redirect&bpo=25895]: Enable WebSocket URL schemes in urllib.parse.urljoin. Patch by Gergely Imreh and Markus Holtermann.

• bpo-27599 [https://bugs.python.org/issue?@action=redirect&bpo=27599]: Fixed buffer overrun in binascii.b2a_qp() and binascii.a2b_qp().

• bpo-19003 [https://bugs.python.org/issue?@action=redirect&bpo=19003]: m email.generator now replaces only \r and/or \n line endings, per the RFC, instead of all unicode line endings.

• bpo-28019 [https://bugs.python.org/issue?@action=redirect&bpo=28019]: itertools.count() no longer rounds non-integer step in range between 1.0 and 2.0 to 1.

• bpo-25969 [https://bugs.python.org/issue?@action=redirect&bpo=25969]: Update the lib2to3 grammar to handle the unpacking generalizations added in 3.5.

• bpo-14977 [https://bugs.python.org/issue?@action=redirect&bpo=14977]: mailcap now respects the order of the lines in the mailcap files ("first match"), as required by RFC 1542. Patch by Michael Lazar.

• bpo-24594 [https://bugs.python.org/issue?@action=redirect&bpo=24594]: Validates persist parameter when opening MSI database

• bpo-17582 [https://bugs.python.org/issue?@action=redirect&bpo=17582]: xml.etree.ElementTree nows preserves whitespaces in attributes (Patch by Duane Griffin. Reviewed and approved by Stefan Behnel.)

• bpo-28047 [https://bugs.python.org/issue?@action=redirect&bpo=28047]: Fixed calculation of line length used for the base64 CTE in the new email policies.

• bpo-27445 [https://bugs.python.org/issue?@action=redirect&bpo=27445]: Don't pass str(_charset) to MIMEText.set_payload(). Patch by Claude Paroz.

• bpo-22450 [https://bugs.python.org/issue?@action=redirect&bpo=22450]: urllib now includes an Accept: / header among the default headers. This makes the results of REST API requests more consistent and predictable especially when proxy servers are involved.

• lib2to3.pgen3.driver.load_grammar() now creates a stable cache file between runs given the same Grammar.txt input regardless of the hash randomization setting.

• bpo-27570 [https://bugs.python.org/issue?@action=redirect&bpo=27570]: Avoid zero-length memcpy() etc calls with null source pointers in the "ctypes" and "array" modules.

• bpo-22233 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27988 [https://bugs.python.org/issue?@action=redirect&bpo=27988]: Fix email iter_attachments incorrect mutation of payload list.

• bpo-27691 [https://bugs.python.org/issue?@action=redirect&bpo=27691]: Fix ssl module's parsing of GEN_RID subject alternative name fields in X.509 certs.

• bpo-27850 [https://bugs.python.org/issue?@action=redirect&bpo=27850]: Remove 3DES from ssl module's default cipher list to counter measure sweet32 attack ( CVE 2016-2183 [https://www.cve.org/CVERecord?id=CVE-2016-2183]).

• bpo-27766 [https://bugs.python.org/issue?@action=redirect&bpo=27766]: Add ChaCha20 Poly1305 to ssl module's default cipher list. (Required OpenSSL 1.1.0 or LibreSSL).

• bpo-26470 [https://bugs.python.org/issue?@action=redirect&bpo=26470]: Port ssl and hashlib module to OpenSSL 1.1.0.

• Remove support for passing a file descriptor to os.access. It never worked but previously didn't raise.

• bpo-12885 [https://bugs.python.org/issue?@action=redirect&bpo=12885]: Fix error when distutils encounters symlink.

• bpo-27881 [https://bugs.python.org/issue?@action=redirect&bpo=27881]: Fixed possible bugs when setting sqlite3.Connection.isolation_level. Based on patch by Xiang Zhang.

• bpo-27861 [https://bugs.python.org/issue?@action=redirect&bpo=27861]: Fixed a crash in sqlite3.Connection.cursor() when a factory creates not a cursor. Patch by Xiang Zhang.

• bpo-19884 [https://bugs.python.org/issue?@action=redirect&bpo=19884]: Avoid spurious output on OS X with Gnu Readline.

• bpo-27706 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-10513 [https://bugs.python.org/issue?@action=redirect&bpo=10513]: Fix a regression in Connection.commit(). Statements should not be reset after a commit.

• A new version of typing.py from https://github.com/python/typing: Collection (only for 3.6) (bpo-27598 [https://bugs.python.org/issue?@action=redirect&bpo=27598]). Add FrozenSet to all (upstream #261). Fix crash in gettype_vars() (upstream #259). Remove the dict constraint in ForwardRef._eval_type (upstream #252).

• bpo-27539 [https://bugs.python.org/issue?@action=redirect&bpo=27539]: Fix unnormalised Fraction.__pow__ result in the case of negative exponent and negative base.

• bpo-21718 [https://bugs.python.org/issue?@action=redirect&bpo=21718]: cursor.description is now available for queries using CTEs.

• bpo-2466 [https://bugs.python.org/issue?@action=redirect&bpo=2466]: posixpath.ismount now correctly recognizes mount points which the user does not have permission to access.

• bpo-27773 [https://bugs.python.org/issue?@action=redirect&bpo=27773]: Correct some memory management errors server_hostname in ssl.wrapsocket().

• bpo-26750 [https://bugs.python.org/issue?@action=redirect&bpo=26750]: unittest.mock.create_autospec() now works properly for subclasses of property() and other data descriptors.

• In the curses module, raise an error if window.getstr() or window.instr() is passed a negative value.

• bpo-27783 [https://bugs.python.org/issue?@action=redirect&bpo=27783]: Fix possible usage of uninitialized memory in operator.methodcaller.

• bpo-27774 [https://bugs.python.org/issue?@action=redirect&bpo=27774]: Fix possible Py_DECREF on unowned object in _sre.

• bpo-27760 [https://bugs.python.org/issue?@action=redirect&bpo=27760]: Fix possible integer overflow in binascii.b2a_qp.

• bpo-27758 [https://bugs.python.org/issue?@action=redirect&bpo=27758]: Fix possible integer overflow in the _csv module for large record lengths.

• bpo-27568 [https://bugs.python.org/issue?@action=redirect&bpo=27568]: Prevent HTTPoxy attack ( CVE 2016-1000110 [https://www.cve.org/CVERecord?id=CVE-2016-1000110]). Ignore the HTTP_PROXY variable when REQUEST_METHOD environment is set, which indicates that the script is in CGI mode.

• bpo-27656 [https://bugs.python.org/issue?@action=redirect&bpo=27656]: Do not assume sched.h defines any SCHED_* constants.

• bpo-27130 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27533 [https://bugs.python.org/issue?@action=redirect&bpo=27533]: Release GIL in nt._isdir

• bpo-17711 [https://bugs.python.org/issue?@action=redirect&bpo=17711]: Fixed unpickling by the persistent ID with protocol 0. Original patch by Alexandre Vassalotti.

• bpo-27522 [https://bugs.python.org/issue?@action=redirect&bpo=27522]: Avoid an unintentional reference cycle in email.feedparser.

• bpo-26844 [https://bugs.python.org/issue?@action=redirect&bpo=26844]: Fix error message for imp.find_module() to refer to 'path' instead of 'name'. Patch by Lev Maximov.

• bpo-23804 [https://bugs.python.org/issue?@action=redirect&bpo=23804]: Fix SSL zero-length recv() calls to not block and not raise an error about unclean EOF.

• bpo-27466 [https://bugs.python.org/issue?@action=redirect&bpo=27466]: Change time format returned by http.cookie.time2netscape, confirming the netscape cookie format and making it consistent with documentation.

• bpo-26664 [https://bugs.python.org/issue?@action=redirect&bpo=26664]: Fix activate.fish by removing mis-use of $.

• bpo-22115 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• Fix a scoping issue in importlib.util.LazyLoader which triggered an UnboundLocalError when lazy-loading a module that was already put into sys.modules.

• bpo-27079 [https://bugs.python.org/issue?@action=redirect&bpo=27079]: Fixed curses.ascii functions isblank(), iscntrl() and ispunct().

• bpo-26754 [https://bugs.python.org/issue?@action=redirect&bpo=26754]: Some functions (compile() etc) accepted a filename argument encoded as an iterable of integers. Now only strings and byte-like objects are accepted.

• bpo-27048 [https://bugs.python.org/issue?@action=redirect&bpo=27048]: Prevents distutils failing on Windows when environment variables contain nonASCII characters

• bpo-27330 [https://bugs.python.org/issue?@action=redirect&bpo=27330]: Fixed possible leaks in the ctypes module.

• bpo-27238 [https://bugs.python.org/issue?@action=redirect&bpo=27238]: Got rid of bare excepts in the turtle module. Original patch by Jelle Zijlstra.

• bpo-27122 [https://bugs.python.org/issue?@action=redirect&bpo=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 reraise the original exception when exiting, let the new chained one through. This avoids the PEP 479 [https://peps.python.org/pep-0479/] bug described in issue25782.

• bpo-26386 [https://bugs.python.org/issue?@action=redirect&bpo=26386]: Fixed ttk.TreeView selection operations with item id's containing spaces.

• bpo-16182 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27392 [https://bugs.python.org/issue?@action=redirect&bpo=27392]: Add loop.connect_accepted_socket(). Patch by Jim Fulton.

• bpo-27930 [https://bugs.python.org/issue?@action=redirect&bpo=27930]: Improved behaviour of logging.handlers.QueueListener. Thanks to Paulo Andrade and Petr Viktorin for the analysis and patch.

• bpo-21201 [https://bugs.python.org/issue?@action=redirect&bpo=21201]: Improves readability of multiprocessing error message. Thanks to Wojciech Walczak for patch.

• bpo-27456 [https://bugs.python.org/issue?@action=redirect&bpo=27456]: asyncio: Set TCP_NODELAY by default.

• bpo-27906 [https://bugs.python.org/issue?@action=redirect&bpo=27906]: Fix socket accept exhaustion during high TCP traffic. Patch by Kevin Conway.

• bpo-28174 [https://bugs.python.org/issue?@action=redirect&bpo=28174]: Handle when SO_REUSEPORT isn't properly supported. Patch by Seth Michael Larson.

• bpo-26654 [https://bugs.python.org/issue?@action=redirect&bpo=26654]: Inspect functools.partial in asyncio.Handle.repr. Patch by iceboy.

• bpo-26909 [https://bugs.python.org/issue?@action=redirect&bpo=26909]: Fix slow pipes IO in asyncio. Patch by INADA Naoki.

• bpo-28176 [https://bugs.python.org/issue?@action=redirect&bpo=28176]: Fix callbacks race in asyncio.SelectorLoop.sock_connect.

• bpo-27759 [https://bugs.python.org/issue?@action=redirect&bpo=27759]: Fix selectors incorrectly retain invalid file descriptors. Patch by Mark Williams.

• bpo-28368 [https://bugs.python.org/issue?@action=redirect&bpo=28368]: Refuse monitoring processes if the child watcher has no loop attached. Patch by Vincent Michel.

• bpo-28369 [https://bugs.python.org/issue?@action=redirect&bpo=28369]: Raise RuntimeError when transport's FD is used with add_reader, add_writer, etc.

• bpo-28370 [https://bugs.python.org/issue?@action=redirect&bpo=28370]: Speedup asyncio.StreamReader.readexactly. Patch by Коренберг Марк.

• bpo-28371 [https://bugs.python.org/issue?@action=redirect&bpo=28371]: Deprecate passing asyncio.Handles to run_in_executor.

• bpo-28372 [https://bugs.python.org/issue?@action=redirect&bpo=28372]: Fix asyncio to support formatting of non-python coroutines.

• bpo-28399 [https://bugs.python.org/issue?@action=redirect&bpo=28399]: Remove UNIX socket from FS before binding. Patch by Коренберг Марк.

• bpo-27972 [https://bugs.python.org/issue?@action=redirect&bpo=27972]: Prohibit Tasks to await on themselves.

• bpo-26923 [https://bugs.python.org/issue?@action=redirect&bpo=26923]: Fix asyncio.Gather to refuse being cancelled once all children are done. Patch by Johannes Ebke.

• bpo-26796 [https://bugs.python.org/issue?@action=redirect&bpo=26796]: Don't configure the number of workers for default threadpool executor. Initial patch by Hans Lawrenz.

• bpo-28600 [https://bugs.python.org/issue?@action=redirect&bpo=28600]: Optimize loop.call_soon().

• bpo-28613 [https://bugs.python.org/issue?@action=redirect&bpo=28613]: Fix get_event_loop() return the current loop if called from coroutines/callbacks.

• bpo-28639 [https://bugs.python.org/issue?@action=redirect&bpo=28639]: Fix inspect.isawaitable to always return bool Patch by Justin Mayfield.

• bpo-28652 [https://bugs.python.org/issue?@action=redirect&bpo=28652]: Make loop methods reject socket kinds they do not support.

• bpo-28653 [https://bugs.python.org/issue?@action=redirect&bpo=28653]: Fix a refleak in functools.lru_cache.

• bpo-28703 [https://bugs.python.org/issue?@action=redirect&bpo=28703]: Fix asyncio.iscoroutinefunction to handle Mock objects.

• bpo-24142 [https://bugs.python.org/issue?@action=redirect&bpo=24142]: Reading a corrupt config file left the parser in an invalid state. Original patch by Florian Höch.

• bpo-28990 [https://bugs.python.org/issue?@action=redirect&bpo=28990]: Fix SSL hanging if connection is closed before handshake completed. (Patch by HoHo-Ho)

IDLE

• bpo-15308 [https://bugs.python.org/issue?@action=redirect&bpo=15308]: Add 'interrupt execution' (^C) to Shell menu. Patch by Roger Serwy, updated by Bayard Randel.

• bpo-27922 [https://bugs.python.org/issue?@action=redirect&bpo=27922]: Stop IDLE tests from 'flashing' gui widgets on the screen.

• 在 IDLE 帮助窗口的标题中加入版本号

• bpo-25564 [https://bugs.python.org/issue?@action=redirect&bpo=25564]: In section on IDLE — console differences, mention that using exec means that builtins is defined for each statement.

• bpo-27714 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-25507 [https://bugs.python.org/issue?@action=redirect&bpo=25507]: IDLE no longer runs buggy code because of its tkinter imports. Users must include the same imports required to run directly in Python.

• bpo-27452 [https://bugs.python.org/issue?@action=redirect&bpo=27452]: add line counter and crc to IDLE configHandler test dump.

• bpo-27365 [https://bugs.python.org/issue?@action=redirect&bpo=27365]: Allow nonascii chars in IDLE NEWS.txt, for contributor names.

• bpo-27245 [https://bugs.python.org/issue?@action=redirect&bpo=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.

C API

• bpo-28808 [https://bugs.python.org/issue?@action=redirect&bpo=28808]: PyUnicode_CompareWithASCIIString() now never raises exceptions.

• bpo-26754 [https://bugs.python.org/issue?@action=redirect&bpo=26754]: PyUnicode_FSDecoder() accepted a filename argument encoded as an iterable of integers. Now only strings and bytes-like objects are accepted.

文档

• bpo-28513 [https://bugs.python.org/issue?@action=redirect&bpo=28513]: Documented commandline interface of zipfile.

测试

• bpo-28950 [https://bugs.python.org/issue?@action=redirect&bpo=28950]: Disallow -j0 to be combined with -T/-l/-M in regrtest command line arguments.

• bpo-28666 [https://bugs.python.org/issue?@action=redirect&bpo=28666]: Now test.support.rmtree is able to remove unwritable or unreadable directories.

• bpo-23839 [https://bugs.python.org/issue?@action=redirect&bpo=23839]: Various caches now are cleared before running every test file.

• bpo-28409 [https://bugs.python.org/issue?@action=redirect&bpo=28409]: regrtest: fix the parser of command line arguments.

• bpo-27787 [https://bugs.python.org/issue?@action=redirect&bpo=27787]: Call gc.collect() before checking each test for "dangling threads", since the dangling threads are weak references.

• bpo-27369 [https://bugs.python.org/issue?@action=redirect&bpo=27369]: In test_pyexpat, avoid testing an error message detail that changed in Expat 2.2.0.

工具/示例

• bpo-27952 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27332 [https://bugs.python.org/issue?@action=redirect&bpo=27332]: Fixed the type of the first argument of module-level functions generated by Argument Clinic. Patch by Petr Viktorin.

• bpo-27418 [https://bugs.python.org/issue?@action=redirect&bpo=27418]: Fixed Tools/importbench/importbench.py.

Windows

• bpo-28251 [https://bugs.python.org/issue?@action=redirect&bpo=28251]: Improvements to help manuals on Windows.

• bpo-28110 [https://bugs.python.org/issue?@action=redirect&bpo=28110]: launcher.msi has different product codes between 32-bit and 64-bit

• bpo-25144 [https://bugs.python.org/issue?@action=redirect&bpo=25144]: Ensures TargetDir is set before continuing with custom install.

• bpo-27469 [https://bugs.python.org/issue?@action=redirect&bpo=27469]: Adds a shell extension to the launcher so that drag and drop works correctly.

• bpo-27309 [https://bugs.python.org/issue?@action=redirect&bpo=27309]: Enabled proper Windows styles in python[w].exe manifest.

构建

• bpo-29080 [https://bugs.python.org/issue?@action=redirect&bpo=29080]: Removes hard dependency on hg.exe from PCBuild/build.bat

• bpo-23903 [https://bugs.python.org/issue?@action=redirect&bpo=23903]: Added missed names to PC/python3.def.

• bpo-10656 [https://bugs.python.org/issue?@action=redirect&bpo=10656]: Fix out-of-tree building on AIX. Patch by Tristan Carel and Michael Haubenwallner.

• bpo-26359 [https://bugs.python.org/issue?@action=redirect&bpo=26359]: Rename —with-optimiations to —enable-optimizations.

• bpo-28444 [https://bugs.python.org/issue?@action=redirect&bpo=28444]: Fix missing extensions modules when cross compiling.

• bpo-28248 [https://bugs.python.org/issue?@action=redirect&bpo=28248]: Update Windows build and OS X installers to use OpenSSL 1.0.2j.

• bpo-28258 [https://bugs.python.org/issue?@action=redirect&bpo=28258]: Fixed build with Estonian locale (python-config and distclean targets in Makefile). Patch by Arfrever Frehtes Taifersar Arahesis.

• bpo-26661 [https://bugs.python.org/issue?@action=redirect&bpo=26661]: setup.py now detects system libffi with multiarch wrapper.

• bpo-28066 [https://bugs.python.org/issue?@action=redirect&bpo=28066]: Fix the logic that searches build directories for generated include files when building outside the source tree.

• bpo-15819 [https://bugs.python.org/issue?@action=redirect&bpo=15819]: Remove redundant include search directory option for building outside the source tree.

• bpo-27566 [https://bugs.python.org/issue?@action=redirect&bpo=27566]: Fix clean target in freeze makefile (patch by Lisa Roach)

• bpo-27705 [https://bugs.python.org/issue?@action=redirect&bpo=27705]: Update message in validate_ucrtbase.py

• bpo-27983 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26307 [https://bugs.python.org/issue?@action=redirect&bpo=26307]: The profile-opt build now applies PGO to the builtin modules.

• bpo-26359 [https://bugs.python.org/issue?@action=redirect&bpo=26359]: Add the —with-optimizations configure flag.

• bpo-27713 [https://bugs.python.org/issue?@action=redirect&bpo=27713]: Suppress spurious build warnings when updating importlib's bootstrap files. Patch by Xiang Zhang

• bpo-25825 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27453 [https://bugs.python.org/issue?@action=redirect&bpo=27453]: CPP invocation in configure must use CPPFLAGS. Patch by Chi Hsuan Yen.

• bpo-27641 [https://bugs.python.org/issue?@action=redirect&bpo=27641]: The configure script now inserts comments into the makefile to prevent the pgen and freezeimportlib executables from being cross-compiled.

• bpo-26662 [https://bugs.python.org/issue?@action=redirect&bpo=26662]: Set PYTHON_FOR_GEN in configure as the Python program to be used for file generation during the build.

• bpo-10910 [https://bugs.python.org/issue?@action=redirect&bpo=10910]: Avoid C++ compilation errors on FreeBSD and OS X. Also update FreedBSD version checks for the original ctype UTF-8 workaround.

• bpo-28676 [https://bugs.python.org/issue?@action=redirect&bpo=28676]: Prevent missing 'getentropy' declaration warning on macOS. Patch by Gareth Rees.

Python 3.5.2 正式版

发布日期: 2016-06-26

核心与内置函数

• bpo-26930 [https://bugs.python.org/issue?@action=redirect&bpo=26930]: Update Windows builds to use OpenSSL 1.0.2h.

测试

• bpo-26867 [https://bugs.python.org/issue?@action=redirect&bpo=26867]: Ubuntu's openssl OP_NO_SSLv3 is forced on by default; fix test.

IDLE

• bpo-27365 [https://bugs.python.org/issue?@action=redirect&bpo=27365]: Allow nonascii in idlelib/NEWS.txt - minimal part for 3.5.2.

Python 3.5.2 rc1

发布日期: 2016-06-12

安全性

• bpo-26556 [https://bugs.python.org/issue?@action=redirect&bpo=26556]: Update expat to 2.1.1, fixes CVE 2015-1283 [https://www.cve.org/CVERecord?id=CVE-2015-1283].

• Fix TLS stripping vulnerability in smtplib, CVE 2016-0772 [https://www.cve.org/CVERecord?id=CVE-2016-0772]. Reported by Team Oststrom.

• bpo-26839 [https://bugs.python.org/issue?@action=redirect&bpo=26839]: On Linux, os.urandom() now calls getrandom() with GRND_NONBLOCK to fall back on reading devurandom if the urandom entropy pool is not initialized yet. Patch written by Colm Buckley.

• bpo-26657 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26313 [https://bugs.python.org/issue?@action=redirect&bpo=26313]: ssl.py loadwindows_store_certs fails if windows cert store is empty. Patch by Baji.

• bpo-25939 [https://bugs.python.org/issue?@action=redirect&bpo=25939]: On Windows open the cert store readonly in ssl.enum_certificates.

核心与内置函数

• bpo-27066 [https://bugs.python.org/issue?@action=redirect&bpo=27066]: Fixed SystemError if a custom opener (for open()) returns a negative number without setting an exception.

• bpo-20041 [https://bugs.python.org/issue?@action=redirect&bpo=20041]: Fixed TypeError when frame.f_trace is set to None. Patch by Xavier de Gaye.

• bpo-26168 [https://bugs.python.org/issue?@action=redirect&bpo=26168]: Fixed possible refleaks in failing Py_BuildValue() with the "N" format unit.

• bpo-26991 [https://bugs.python.org/issue?@action=redirect&bpo=26991]: Fix possible refleak when creating a function with annotations.

• bpo-27039 [https://bugs.python.org/issue?@action=redirect&bpo=27039]: Fixed bytearray.remove() for values greater than 127. Patch by Joe Jevnik.

• bpo-23640 [https://bugs.python.org/issue?@action=redirect&bpo=23640]: int.from_bytes() no longer bypasses constructors for subclasses.

• bpo-26811 [https://bugs.python.org/issue?@action=redirect&bpo=26811]: gc.get_objects() no longer contains a broken tuple with NULL pointer.

• bpo-20120 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26659 [https://bugs.python.org/issue?@action=redirect&bpo=26659]: Make the builtin slice type support cycle collection.

• bpo-26718 [https://bugs.python.org/issue?@action=redirect&bpo=26718]: super.init no longer leaks memory if called multiple times. NOTE: A direct call of super.init is not endorsed!

• bpo-25339 [https://bugs.python.org/issue?@action=redirect&bpo=25339]: PYTHONIOENCODING now has priority over locale in setting the error handler for stdin and stdout.

• bpo-26494 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26581 [https://bugs.python.org/issue?@action=redirect&bpo=26581]: If coding cookie is specified multiple times on a line in Python source code file, only the first one is taken to account.

• bpo-26464 [https://bugs.python.org/issue?@action=redirect&bpo=26464]: Fix str.translate() when string is ASCII and first replacements removes character, but next replacement uses a nonASCII character or a string longer than 1 character. Regression introduced in Python 3.5.0.

• bpo-22836 [https://bugs.python.org/issue?@action=redirect&bpo=22836]: Ensure exception reports from PyErrDisplay() and PyErrWriteUnraisable() are sensible even when formatting them produces secondary errors. This affects the reports produced by sys.excepthook() and when __del() raises an exception.

• bpo-26302 [https://bugs.python.org/issue?@action=redirect&bpo=26302]: Correct behavior to reject comma as a legal character for cookie names.

• bpo-4806 [https://bugs.python.org/issue?@action=redirect&bpo=4806]: Avoid masking the original TypeError exception when using star (*) unpacking in function calls. Based on patch by Hagen Fürstenau and Daniel Urban.

• bpo-27138 [https://bugs.python.org/issue?@action=redirect&bpo=27138]: Fix the doc comment for FileFinder.find_spec().

• bpo-26154 [https://bugs.python.org/issue?@action=redirect&bpo=26154]: Add a new private PyThreadStateUncheckedGet() 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 PyThreadStateCurrent 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.

• bpo-26194 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-25843 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-22995 [https://bugs.python.org/issue?@action=redirect&bpo=22995]: [UPDATE] Comment out the one of the pickleability tests in PyObjectGetState() due to regressions observed in Cython-based projects.

• bpo-25961 [https://bugs.python.org/issue?@action=redirect&bpo=25961]: Disallowed null characters in the type name.

• bpo-25973 [https://bugs.python.org/issue?@action=redirect&bpo=25973]: Fix segfault when an invalid nonlocal statement binds a name starting with two underscores.

• bpo-22995 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-20440 [https://bugs.python.org/issue?@action=redirect&bpo=20440]: Massive replacing unsafe attribute setting code with special macro Py_SETREF.

• bpo-25766 [https://bugs.python.org/issue?@action=redirect&bpo=25766]: Special method bytes() now works in str subclasses.

• bpo-25421 [https://bugs.python.org/issue?@action=redirect&bpo=25421]: sizeof methods of builtin types now use dynamic basic size. This allows sys.getsize() to work correctly with their subclasses with slots defined.

• bpo-25709 [https://bugs.python.org/issue?@action=redirect&bpo=25709]: Fixed problem with inplace string concatenation and utf-8 cache.

• bpo-27147 [https://bugs.python.org/issue?@action=redirect&bpo=27147]: Mention PEP 420 [https://peps.python.org/pep-0420/] in the importlib docs.

• bpo-24097 [https://bugs.python.org/issue?@action=redirect&bpo=24097]: Fixed crash in object.reduce() if slot name is freed inside getattr.

• bpo-24731 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26478 [https://bugs.python.org/issue?@action=redirect&bpo=26478]: Fix semantic bugs when using binary operators with dictionary views and tuples.

• bpo-26171 [https://bugs.python.org/issue?@action=redirect&bpo=26171]: Fix possible integer overflow and heap corruption in zipimporter.get_data().

• bpo-25660 [https://bugs.python.org/issue?@action=redirect&bpo=25660]: Fix TAB key behaviour in REPL with readline.

• bpo-25887 [https://bugs.python.org/issue?@action=redirect&bpo=25887]: Raise a RuntimeError when a coroutine object is awaited more than once.

• bpo-27243 [https://bugs.python.org/issue?@action=redirect&bpo=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.

库

• bpo-21386 [https://bugs.python.org/issue?@action=redirect&bpo=21386]: Implement missing IPv4Address.is_global property. It was documented since 07a5610bae9d. Initial patch by Roger Luethi.

• bpo-20900 [https://bugs.python.org/issue?@action=redirect&bpo=20900]: distutils register command now decodes HTTP responses correctly. Initial patch by ingrid.

• 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 [https://peps.python.org/pep-0492/] (Awaitable, AsyncIterable, AsyncIterator) have been added (in fact they made it into 3.5.1 but were never mentioned).

• bpo-25738 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-21313 [https://bugs.python.org/issue?@action=redirect&bpo=21313]: Fix the "platform" module to tolerate when sys.version contains truncated build information.

• bpo-27164 [https://bugs.python.org/issue?@action=redirect&bpo=27164]: In the zlib module, allow decompressing raw Deflate streams with a predefined zdict. Based on patch by Xiang Zhang.

• bpo-24291 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26809 [https://bugs.python.org/issue?@action=redirect&bpo=26809]: Add __all__ to string. Patch by Emanuel Barry.

• bpo-26373 [https://bugs.python.org/issue?@action=redirect&bpo=26373]: subprocess.Popen.communicate now correctly ignores BrokenPipeError when the child process dies before .communicate() is called in more/all circumstances.

• bpo-21776 [https://bugs.python.org/issue?@action=redirect&bpo=21776]: distutils.upload now correctly handles HTTPError. Initial patch by Claudiu Popa.

• bpo-27114 [https://bugs.python.org/issue?@action=redirect&bpo=27114]: Fix SSLContext.loadwindows_store_certs fails with PermissionError

• bpo-18383 [https://bugs.python.org/issue?@action=redirect&bpo=18383]: Avoid creating duplicate filters when using filterwarnings and simplefilter. Based on patch by Alex Shkop.

• bpo-27057 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-27014 [https://bugs.python.org/issue?@action=redirect&bpo=27014]: Fix infinite recursion using typing.py. Thanks to Kalle Tuure!

• bpo-14132 [https://bugs.python.org/issue?@action=redirect&bpo=14132]: Fix urllib.request redirect handling when the target only has a query string. Original fix by Ján Janech.

• bpo-17214 [https://bugs.python.org/issue?@action=redirect&bpo=17214]: The "urllib.request" module now percent-encodes nonASCII bytes found in redirect target URLs. Some servers send Location header fields with nonASCII bytes, but "http.client" requires the request target to be ASCII-encodable, otherwise a UnicodeEncodeError is raised. Based on patch by Christian Heimes.

• bpo-26892 [https://bugs.python.org/issue?@action=redirect&bpo=26892]: Honor debuglevel flag in urllib.request.HTTPHandler. Patch contributed by Chi Hsuan Yen.

• bpo-22274 [https://bugs.python.org/issue?@action=redirect&bpo=22274]: In the subprocess module, allow stderr to be redirected to stdout even when stdout is not redirected. Patch by Akira Li.

• bpo-26807 [https://bugs.python.org/issue?@action=redirect&bpo=26807]: mock_open 'files' no longer error on readline at end of file. Patch from Yolanda Robla.

• bpo-25745 [https://bugs.python.org/issue?@action=redirect&bpo=25745]: Fixed leaking a userptr in curses panel destructor.

• bpo-26977 [https://bugs.python.org/issue?@action=redirect&bpo=26977]: Removed unnecessary, and ignored, call to sum of squares helper in statistics.pvariance.

• bpo-26881 [https://bugs.python.org/issue?@action=redirect&bpo=26881]: The modulefinder module now supports extended opcode arguments.

• bpo-23815 [https://bugs.python.org/issue?@action=redirect&bpo=23815]: Fixed crashes related to directly created instances of types in _tkinter and curses.panel modules.

• bpo-17765 [https://bugs.python.org/issue?@action=redirect&bpo=17765]: weakref.ref() no longer silently ignores keyword arguments. Patch by Georg Brandl.

• bpo-26873 [https://bugs.python.org/issue?@action=redirect&bpo=26873]: xmlrpc now raises ResponseError on unsupported type tags instead of silently return incorrect result.

• bpo-26711 [https://bugs.python.org/issue?@action=redirect&bpo=26711]: Fixed the comparison of plistlib.Data with other types.

• bpo-24114 [https://bugs.python.org/issue?@action=redirect&bpo=24114]: Fix an uninitialized variable in ctypes.util. 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.

• bpo-26864 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26634 [https://bugs.python.org/issue?@action=redirect&bpo=26634]: recursiverepr() now sets _qualname of wrapper. Patch by Xiang Zhang.

• bpo-26804 [https://bugs.python.org/issue?@action=redirect&bpo=26804]: urllib.request will prefer lower_case proxy environment variables over UPPER_CASE or Mixed_Case ones. Patch contributed by Hans-Peter Jansen.

• bpo-26837 [https://bugs.python.org/issue?@action=redirect&bpo=26837]: assertSequenceEqual() now correctly outputs non-stringified differing items (like bytes in the -b mode). This affects assertListEqual() and assertTupleEqual().

• bpo-26041 [https://bugs.python.org/issue?@action=redirect&bpo=26041]: Remove "will be removed in Python 3.7" from deprecation messages of platform.dist() and platform.linux_distribution(). Patch by Kumaripaba Miyurusara Athukorala.

• bpo-26822 [https://bugs.python.org/issue?@action=redirect&bpo=26822]: itemgetter, attrgetter and methodcaller objects no longer silently ignore keyword arguments.

• bpo-26733 [https://bugs.python.org/issue?@action=redirect&bpo=26733]: Disassembling a class now disassembles class and static methods. Patch by Xiang Zhang.

• bpo-26801 [https://bugs.python.org/issue?@action=redirect&bpo=26801]: Fix error handling in shutil.get_terminal_size(), catch AttributeError instead of NameError. Patch written by Emanuel Barry.

• bpo-24838 [https://bugs.python.org/issue?@action=redirect&bpo=24838]: tarfile's ustar and gnu formats now correctly calculate name and link field limits for multibyte character encodings like utf-8.

• bpo-26717 [https://bugs.python.org/issue?@action=redirect&bpo=26717]: Stop encoding Latin-1-ized WSGI paths with UTF-8. Patch by Anthony Sottile.

• bpo-26735 [https://bugs.python.org/issue?@action=redirect&bpo=26735]: Fix 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.

• bpo-16329 [https://bugs.python.org/issue?@action=redirect&bpo=16329]: Add .webm to mimetypes.types_map. Patch by Giampaolo Rodola'.

• bpo-13952 [https://bugs.python.org/issue?@action=redirect&bpo=13952]: Add .csv to mimetypes.types_map. Patch by Geoff Wilson.

• bpo-26709 [https://bugs.python.org/issue?@action=redirect&bpo=26709]: Fixed Y2038 problem in loading binary PLists.

• bpo-23735 [https://bugs.python.org/issue?@action=redirect&bpo=23735]: Handle terminal resizing with Readline 6.3+ by installing our own SIGWINCH handler. Patch by Eric Price.

• bpo-26586 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-22854 [https://bugs.python.org/issue?@action=redirect&bpo=22854]: Change BufferedReader.writable() and BufferedWriter.readable() to always return False.

• bpo-25195 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26644 [https://bugs.python.org/issue?@action=redirect&bpo=26644]: Raise ValueError rather than SystemError when a negative length is passed to SSLSocket.recv() or read().

• bpo-23804 [https://bugs.python.org/issue?@action=redirect&bpo=23804]: Fix SSL recv(0) and read(0) methods to return zero bytes instead of up to 1024.

• bpo-26616 [https://bugs.python.org/issue?@action=redirect&bpo=26616]: Fixed a bug in datetime.astimezone() method.

• bpo-21925 [https://bugs.python.org/issue?@action=redirect&bpo=21925]: warnings.formatwarning() now catches exceptions on linecache.getline(…) to be able to log ResourceWarning emitted late during the Python shutdown process.

• bpo-24266 [https://bugs.python.org/issue?@action=redirect&bpo=24266]: Ctrl+C during Readline history search now cancels the search mode when compiled with Readline 7.

• bpo-26560 [https://bugs.python.org/issue?@action=redirect&bpo=26560]: Avoid potential ValueError in BaseHandler.start_response. Initial patch by Peter Inglesby.

• bpo-26569 [https://bugs.python.org/issue?@action=redirect&bpo=26569]: Fix pyclbr.readmodule() and pyclbr.readmodule_ex() to support importing packages.

• bpo-26499 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-25320 [https://bugs.python.org/issue?@action=redirect&bpo=25320]: Handle sockets in directories unittest discovery is scanning. Patch from Victor van den Elzen.

• bpo-16181 [https://bugs.python.org/issue?@action=redirect&bpo=16181]: cookiejar.http2time() now returns None if year is higher than datetime.MAXYEAR.

• bpo-26513 [https://bugs.python.org/issue?@action=redirect&bpo=26513]: Fixes platform module detection of Windows Server

• bpo-23718 [https://bugs.python.org/issue?@action=redirect&bpo=23718]: Fixed parsing time in week 0 before Jan 1. Original patch by Tamás Bence Gedai.

• bpo-20589 [https://bugs.python.org/issue?@action=redirect&bpo=20589]: Invoking Path.owner() and Path.group() on Windows now raise NotImplementedError instead of ImportError.

• bpo-26177 [https://bugs.python.org/issue?@action=redirect&bpo=26177]: Fixed the keys() method for Canvas and Scrollbar widgets.

• bpo-15068 [https://bugs.python.org/issue?@action=redirect&bpo=15068]: Got rid of excessive buffering in the fileinput module. The bufsize parameter is no longer used.

• bpo-2202 [https://bugs.python.org/issue?@action=redirect&bpo=2202]: Fix UnboundLocalError in AbstractDigestAuthHandler.get_algorithm_impls. Initial patch by Mathieu Dupuy.

• bpo-25718 [https://bugs.python.org/issue?@action=redirect&bpo=25718]: Fixed pickling and copying the accumulate() iterator with total is None.

• bpo-26475 [https://bugs.python.org/issue?@action=redirect&bpo=26475]: Fixed debugging output for regular expressions with the (?x) flag.

• bpo-26457 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26385 [https://bugs.python.org/issue?@action=redirect&bpo=26385]: Remove the file if the internal open() call in NamedTemporaryFile() fails. Patch by Silent Ghost.

• bpo-26402 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-25913 [https://bugs.python.org/issue?@action=redirect&bpo=25913]: Leading <~ is optional now in base64.a85decode() with adobe=True. Patch by Swati Jaiswal.

• bpo-26186 [https://bugs.python.org/issue?@action=redirect&bpo=26186]: Remove an invalid type check in importlib.util.LazyLoader.

• bpo-26367 [https://bugs.python.org/issue?@action=redirect&bpo=26367]: importlib.import() raises SystemError like builtins.import() when level is specified but without an accompanying package specified.

• bpo-26309 [https://bugs.python.org/issue?@action=redirect&bpo=26309]: In the "socketserver" module, shut down the request (closing the connected socket) when verify_request() returns false. Patch by Aviv Palivoda.

• bpo-25995 [https://bugs.python.org/issue?@action=redirect&bpo=25995]: os.walk() no longer uses FDs proportional to the tree depth.

• bpo-26117 [https://bugs.python.org/issue?@action=redirect&bpo=26117]: The os.scandir() iterator now closes file descriptor not only when the iteration is finished, but when it was failed with error.

• bpo-25911 [https://bugs.python.org/issue?@action=redirect&bpo=25911]: Restored support of bytes paths in os.walk() on Windows.

• bpo-26045 [https://bugs.python.org/issue?@action=redirect&bpo=26045]: Add UTF-8 suggestion to error message when posting a non-Latin-1 string with http.client.

• bpo-12923 [https://bugs.python.org/issue?@action=redirect&bpo=12923]: Reset FancyURLopener's redirect counter even if there is an exception. Based on patches by Brian Brazil and Daniel Rocco.

• bpo-25945 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26202 [https://bugs.python.org/issue?@action=redirect&bpo=26202]: copy.deepcopy() now correctly copies range() objects with non-atomic attributes.

• bpo-23076 [https://bugs.python.org/issue?@action=redirect&bpo=23076]: Path.glob() now raises a ValueError if it's called with an invalid pattern. Patch by Thomas Nyberg.

• bpo-19883 [https://bugs.python.org/issue?@action=redirect&bpo=19883]: Fixed possible integer overflows in zipimport.

• bpo-26227 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-26147 [https://bugs.python.org/issue?@action=redirect&bpo=26147]: xmlrpc now works with strings not encodable with used non-UTF-8 encoding.

• bpo-25935 [https://bugs.python.org/issue?@action=redirect&bpo=25935]: Garbage collector now breaks reference loops with OrderedDict.

• bpo-16620 [https://bugs.python.org/issue?@action=redirect&bpo=16620]: Fixed AttributeError in msilib.Directory.glob().

• bpo-26013 [https://bugs.python.org/issue?@action=redirect&bpo=26013]: Added compatibility with broken protocol 2 pickles created in old Python 3 versions (3.4.3 and lower).

• bpo-25850 [https://bugs.python.org/issue?@action=redirect&bpo=25850]: Use cross-compilation by default for 64-bit Windows.

• bpo-17633 [https://bugs.python.org/issue?@action=redirect&bpo=17633]: Improve zipimport's support for namespace packages.

• bpo-24705 [https://bugs.python.org/issue?@action=redirect&bpo=24705]: Fix sysconfig._parse_makefile not expanding ${} vars appearing before $() vars.

• bpo-22138 [https://bugs.python.org/issue?@action=redirect&bpo=22138]: Fix mock.patch behavior when patching descriptors. Restore original values after patching. Patch contributed by Sean McCully.

• bpo-25672 [https://bugs.python.org/issue?@action=redirect&bpo=25672]: In the ssl module, enable the SSL_MODE_RELEASE_BUFFERS mode option if it is safe to do so.

• bpo-26012 [https://bugs.python.org/issue?@action=redirect&bpo=26012]: Don't traverse into symlinks for ** pattern in pathlib.Path.[r]glob().

• bpo-24120 [https://bugs.python.org/issue?@action=redirect&bpo=24120]: Ignore PermissionError when traversing a tree with pathlib.Path.[r]glob(). Patch by Ulrich Petri.

• bpo-25447 [https://bugs.python.org/issue?@action=redirect&bpo=25447]: fileinput now uses sys.stdin as-is if it does not have a buffer attribute (restores backward compatibility).

• bpo-25447 [https://bugs.python.org/issue?@action=redirect&bpo=25447]: Copying the lru_cache() wrapper object now always works, independently from the type of the wrapped object (by returning the original object unchanged).

• bpo-24103 [https://bugs.python.org/issue?@action=redirect&bpo=24103]: Fixed possible use after free in ElementTree.XMLPullParser.

• bpo-25860 [https://bugs.python.org/issue?@action=redirect&bpo=25860]: os.fwalk() no longer skips remaining directories when error occurs. Original patch by Samson Lee.

• bpo-25914 [https://bugs.python.org/issue?@action=redirect&bpo=25914]: Fixed and simplified OrderedDict.sizeof.

• bpo-25902 [https://bugs.python.org/issue?@action=redirect&bpo=25902]: Fixed various refcount issues in ElementTree iteration.

• bpo-25717 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-24903 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-25764 [https://bugs.python.org/issue?@action=redirect&bpo=25764]: In the subprocess module, preserve any exception caused by fork() failure when preexec_fn is used.

• bpo-6478 [https://bugs.python.org/issue?@action=redirect&bpo=6478]: _strptime's regexp cache now is reset after changing timezone with time.tzset().

• bpo-14285 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-19771 [https://bugs.python.org/issue?@action=redirect&bpo=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).

• bpo-25177 [https://bugs.python.org/issue?@action=redirect&bpo=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.

• bpo-25718 [https://bugs.python.org/issue?@action=redirect&bpo=25718]: Fixed copying object with state with boolean value is false.

• bpo-10131 [https://bugs.python.org/issue?@action=redirect&bpo=10131]: Fixed deep copying of minidom documents. Based on patch by Marian Ganisin.

• bpo-25725 [https://bugs.python.org/issue?@action=redirect&bpo=25725]: Fixed a reference leak in pickle.loads() when unpickling invalid data including tuple instructions.

• bpo-25663 [https://bugs.python.org/issue?@action=redirect&bpo=25663]: In the Readline completer, avoid listing duplicate global names, and search the global namespace before searching builtins.

• bpo-25688 [https://bugs.python.org/issue?@action=redirect&bpo=25688]: Fixed file leak in ElementTree.iterparse() raising an error.

• bpo-23914 [https://bugs.python.org/issue?@action=redirect&bpo=23914]: Fixed SystemError raised by unpickler on broken pickle data.

• bpo-25691 [https://bugs.python.org/issue?@action=redirect&bpo=25691]: Fixed crash on deleting ElementTree.Element attributes.

• bpo-25624 [https://bugs.python.org/issue?@action=redirect&bpo=25624]: ZipFile now always writes a ZIP_STORED header for directory entries. Patch by Dingyuan Wang.

• Skip getaddrinfo if host is already resolved. Patch by A. Jesse Jiryu Davis.

• bpo-26050 [https://bugs.python.org/issue?@action=redirect&bpo=26050]: Add asyncio.StreamReader.readuntil() method. Patch by Марк Коренберг.

• bpo-25924 [https://bugs.python.org/issue?@action=redirect&bpo=25924]: Avoid unnecessary serialization of getaddrinfo(3) calls on OS X versions 10.5 or higher. Original patch by A. Jesse Jiryu Davis.

• bpo-26406 [https://bugs.python.org/issue?@action=redirect&bpo=26406]: Avoid unnecessary serialization of getaddrinfo(3) calls on current versions of OpenBSD and NetBSD. Patch by A. Jesse Jiryu Davis.

• bpo-26848 [https://bugs.python.org/issue?@action=redirect&bpo=26848]: Fix asyncio/subprocess.communicate() to handle empty input. Patch by Jack O'Connor.

• bpo-27040 [https://bugs.python.org/issue?@action=redirect&bpo=27040]: Add loop.get_exception_handler method

• bpo-27041 [https://bugs.python.org/issue?@action=redirect&bpo=27041]: asyncio: Add loop.create_future method

• bpo-27223 [https://bugs.python.org/issue?@action=redirect&bpo=27223]: asyncio: Fix readready and writeready to respect connlost. Patch by Łukasz Langa.

• bpo-22970 [https://bugs.python.org/issue?@action=redirect&bpo=22970]: asyncio: Fix inconsistency cancelling Condition.wait. Patch by David Coles.