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Diffstat (limited to 'Misc/NEWS')
| -rw-r--r-- | Misc/NEWS | 6758 |
1 files changed, 1994 insertions, 4764 deletions
@@ -1,121 +1,187 @@ -+++++++++++ ++++++++++++ Python News +++++++++++ -What's New in Python 3.4.4rc1? -============================== -Release date: tba +What's New in Python 3.5.1 +========================== + +Release date: TBA Core and Builtins ----------------- +Library +------- + +- Issue #24982: shutil.make_archive() with the "zip" format now adds entries + for directories (including empty directories) in ZIP file. + +- Issue #25019: Fixed a crash caused by setting non-string key of expat parser. + Based on patch by John Leitch. + +- Issue #16180: Exit pdb if file has syntax error, instead of trapping user + in an infinite loop. Patch by Xavier de Gaye. + - 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 #21167: NAN operations are now handled correctly when python is - compiled with ICC even if -fp-model strict is not specified. +- Issue #24992: Fix error handling and a race condition (related to garbage + collection) in collections.OrderedDict constructor. -- Issue #4395: Better testing and documentation of binary operators. - Patch by Martin Panter. +- Issue #24881: Fixed setting binary mode in Python implementation of FileIO + on Windows and Cygwin. Patch from Akira Li. -- 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 #21112: Fix regression in unittest.expectedFailure on subclasses. + Patch from Berker Peksag. -- Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(), - PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains() - to check for and handle errors correctly. +- 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 #24257: Fixed system error in the comparison of faked - types.SimpleNamespace. +- Issue #24913: Fix overrun error in deque.index(). + Found by John Leitch and Bryce Darling. -- Issue #22939: Fixed integer overflow in iterator object. Patch by - Clement Rouault. +- Issue #24774: Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu. -- 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 #21159: Improve message in configparser.InterpolationMissingOptionError. + Patch from Łukasz Langa. -- Issue #24102: Fixed exception type checking in standard error handlers. +- Issue #20362: Honour TestCase.longMessage correctly in assertRegex. + Patch from Ilia Kurenkov. -- Issue #23757: PySequence_Tuple() incorrectly called the concrete list API - when the data was a list subclass. +- Issue #23572: Fixed functools.singledispatch on classes with falsy + metaclasses. Patch by Ethan Furman. -- Issue #24407: Fix crash when dict is mutated while being updated. +Documentation +------------- -- Issue #24096: Make warnings.warn_explicit more robust against mutation of the - warnings.filters list. +- Issue #24952: Clarify the default size argument of stack_size() in + the "threading" and "_thread" modules. Patch from Mattip. -- Issue #23996: Avoid a crash when a delegated generator raises an - unnormalized StopIteration exception. Patch by Stefan Behnel. +- Issue #23725: Overhaul tempfile docs. Note deprecated status of mktemp. + Patch from Zbigniew Jędrzejewski-Szmek. -- Issue #24022: Fix tokenizer crash when processing undecodable source code. +- Issue #24808: Update the types of some PyTypeObject fields. Patch by + Joseph Weston. -- 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 #22812: Fix unittest discovery examples. + Patch from Pam McA'Nulty. -- Issue #22977: Fixed formatting Windows error messages on Wine. - Patch by Martin Panter. +Tests +----- -- Issue #23803: Fixed str.partition() and str.rpartition() when a separator - is wider then partitioned string. +- PCbuild\rt.bat now accepts an unlimited number of arguments to pass along + to regrtest.py. Previously there was a limit of 9. -- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet. +Build +----- -- Issue #23629: Fix the default __sizeof__ implementation for variable-sized - objects. +- Issue #24910: Windows MSIs now have unique display names. -- Issue #24044: Fix possible null pointer dereference in list.sort in out of - memory conditions. +- Issue #24986: It is now possible to build Python on Windows without errors + when external libraries are not available. -- Issue #21354: PyCFunction_New function is exposed by python DLL again. -- Issue #23812: Fix asyncio.Queue.get() to avoid loosing items on cancellation. - Patch by Gustavo J. A. M. Carneiro. +What's New in Python 3.5.0 release candidate 3? +=============================================== -Library -------- +Release date: 2015-09-07 -- Issue #24982: shutil.make_archive() with the "zip" format now adds entries - for directories (including empty directories) in ZIP file. +Core and Builtins +----------------- -- Issue #25019: Fixed a crash caused by setting non-string key of expat parser. - Based on patch by John Leitch. +- Issue #24305: Prevent import subsystem stack frames from being counted + by the warnings.warn(stacklevel=) parameter. -- Issue #24917: time_strftime() buffer over-read. +- Issue #24912: Prevent __class__ assignment to immutable built-in objects. + +- Issue #24975: Fix AST compilation for PEP 448 syntax. + +Library +------- +- Issue #24917: time_strftime() buffer over-read. - Issue #23144: Make sure that HTMLParser.feed() returns all the data, even when convert_charrefs is True. -- Issue #16180: Exit pdb if file has syntax error, instead of trapping user - in an infinite loop. Patch by Xavier de Gaye. +- Issue #24748: To resolve a compatibility problem found with py2exe and + pywin32, imp.load_dynamic() once again ignores previously loaded modules + to support Python modules replacing themselves with extension modules. + Patch by Petr Viktorin. -- Issue #21112: Fix regression in unittest.expectedFailure on subclasses. - Patch from Berker Peksag. +- Issue #24635: Fixed a bug in typing.py where isinstance([], typing.Iterable) + would return True once, then False on subsequent calls. -- 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 #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 #24989: Fixed buffer overread in BytesIO.readline() if a position is + set beyond size. Based on patch by John Leitch. -- Issue #24774: Fix docstring in http.server.test. Patch from Chiu-Hsiang Hsu. +- Issue #24913: Fix overrun error in deque.index(). + Found by John Leitch and Bryce Darling. -- Issue #21159: Improve message in configparser.InterpolationMissingOptionError. - Patch from Łukasz Langa. -- Issue #23888: Handle fractional time in cookie expiry. Patch by ssh. +What's New in Python 3.5.0 release candidate 2? +=============================================== + +Release date: 2015-08-25 + +Core and Builtins +----------------- + +- Issue #24769: Interpreter now starts properly when dynamic loading + is disabled. Patch by Petr Viktorin. + +- Issue #21167: NAN operations are now handled correctly when python is + compiled with ICC even if -fp-model strict is not specified. + +- Issue #24492: A "package" lacking a __name__ attribute when trying to perform + a ``from .. import ...`` statement will trigger an ImportError instead of an + AttributeError. + +Library +------- + +- Issue #24847: Removes vcruntime140.dll dependency from Tcl/Tk. + +- Issue #24839: platform._syscmd_ver raises DeprecationWarning + +- Issue #24867: Fix Task.get_stack() for 'async def' coroutines + + +What's New in Python 3.5.0 release candidate 1? +=============================================== + +Release date: 2015-08-09 + +Core and Builtins +----------------- + +- Issue #24667: Resize odict in all cases that the underlying dict resizes. + +Library +------- + +- Issue #24824: Signatures of codecs.encode() and codecs.decode() now are + compatible with pydoc. + +- Issue #24634: Importing uuid should not try to load libc on Windows + +- Issue #24798: _msvccompiler.py doesn't properly support manifests + +- Issue #4395: Better testing and documentation of binary operators. + Patch by Martin Panter. + +- Issue #23973: Update typing.py from GitHub repo. - Issue #23004: mock_open() now reads binary data correctly when the type of read_data is bytes. Initial patch by Aaron Hill. +- Issue #23888: Handle fractional time in cookie expiry. Patch by ssh. + - 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. @@ -134,13 +200,83 @@ Library - Issue #19450: Update Windows and OS X installer builds to use SQLite 3.8.11. -- Issue #23441: rcompleter now prints a tab character instead of displaying - possible completions for an empty word. Initial patch by Martin Sekera. +- Issue #17527: Add PATCH to wsgiref.validator. Patch from Luca Sbardella. + +- Issue #23812: Fix asyncio.Queue.get() to avoid loosing items on cancellation. + Patch by Gustavo J. A. M. Carneiro. -- Issue #24735: Fix invalid memory access in - itertools.combinations_with_replacement(). +- Issue #24791: Fix grammar regression for call syntax: 'g(*a or b)'. -- Issue #17527: Add PATCH to wsgiref.validator. Patch from Luca Sbardella. +IDLE +---- + +- Issue #23672: Allow Idle to edit and run files with astral chars in name. + Patch by Mohd Sanad Zaki Rizvi. + +- 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 #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 #13884: Idle menus. Remove tearoff lines. Patch by Roger Serwy. + +Documentation +------------- + +- 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 #20769: Improve reload() docs. Patch by Dorian Pula. + +- Issue #23589: Remove duplicate sentence from the FAQ. Patch by Yongzhi Pan. + +- Issue #24729: Correct IO tutorial to match implementation regarding + encoding parameter to open function. + +Tests +----- + +- 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. + + +What's New in Python 3.5.0 beta 4? +================================== + +Release date: 2015-07-26 + +Core and Builtins +----------------- + +- Issue #23573: Restored optimization of bytes.rfind() and bytearray.rfind() + for single-byte argument on Linux. + +- Issue #24569: Make PEP 448 dictionary evaluation more consistent. + +- Issue #24583: Fix crash when set is mutated while being updated. + +- Issue #24407: Fix crash when dict is mutated while being updated. + +- Issue #24619: New approach for tokenizing async/await. As a consequence, + is is now possible to have one-line 'async def foo(): await ..' functions. + +- Issue #24687: Plug refleak on SyntaxError in function parameters + annotations. + +- Issue #15944: memoryview: Allow arbitrary formats when casting to bytes. + Patch by Martin Panter. + +Library +------- + +- Issue #23441: rcompleter now prints a tab character instead of displaying + possible completions for an empty word. Initial patch by Martin Sekera. - Issue #24683: Fixed crashes in _json functions called with arguments of inappropriate type. @@ -148,20 +284,33 @@ Library - Issue #21697: shutil.copytree() now correctly handles symbolic links that point to directories. Patch by Eduardo Seabra and Thomas Kluyver. +- Issue #14373: Fixed segmentation fault when gc.collect() is called during + constructing lru_cache (C implementation). + +- Issue #24695: Fix a regression in traceback.print_exception(). If + exc_traceback is None we shouldn't print a traceback header like described + in the documentation. + - Issue #24620: Random.setstate() now validates the value of state last element. +- Issue #22485: Fixed an issue that caused `inspect.getsource` to return + incorrect results on nested functions. + - Issue #22153: Improve unittest docs. Patch from Martin Panter and evilzero. -- Issue #24206: Fixed __eq__ and __ne__ methods of inspect classes. +- Issue #24580: Symbolic group references to open group in re patterns now are + explicitly forbidden as well as numeric group references. -- Issue #21750: mock_open.read_data can now be read from each instance, as it - could in Python 3.3. +- Issue #24206: Fixed __eq__ and __ne__ methods of inspect classes. -- Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs. +- Issue #24631: Fixed regression in the timeit module with multiline setup. - Issue #18622: unittest.mock.mock_open().reset_mock would recurse infinitely. Patch from Nicola Palumbo and Laurent De Buyst. +- Issue #23661: unittest.mock side_effects can now be exceptions again. This + was a regression vs Python 3.4. Patch from Ignacio Rossi + - Issue #24608: chunk.Chunk.read() now always returns bytes, not str. - Issue #18684: Fixed reading out of the buffer in the re module. @@ -169,6 +318,59 @@ Library - Issue #24259: tarfile now raises a ReadError if an archive is truncated inside a data segment. +- Issue #15014: SMTP.auth() and SMTP.login() now support RFC 4954's optional + initial-response argument to the SMTP AUTH command. + +- Issue #24669: Fix inspect.getsource() for 'async def' functions. + Patch by Kai Groner. + +- Issue #24688: ast.get_docstring() for 'async def' functions. + +Build +----- + +- Issue #24603: Update Windows builds and OS X 10.5 installer to use OpenSSL + 1.0.2d. + + +What's New in Python 3.5.0 beta 3? +================================== + +Release date: 2015-07-05 + +Core and Builtins +----------------- + +- 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. + +- Upgrade to Unicode 8.0.0. + +- Issue #24345: Add Py_tp_finalize slot for the stable ABI. + +- Issue #24400: Introduce a distinct type for PEP 492 coroutines; add + types.CoroutineType, inspect.getcoroutinestate, inspect.getcoroutinelocals; + coroutines no longer use CO_GENERATOR flag; sys.set_coroutine_wrapper + works only for 'async def' coroutines; inspect.iscoroutine no longer + uses collections.abc.Coroutine, it's intended to test for pure 'async def' + coroutines only; add new opcode: GET_YIELD_FROM_ITER; fix generators wrapper + used in types.coroutine to be instance of collections.abc.Generator; + collections.abc.Awaitable and collections.abc.Coroutine can no longer + be used to detect generator-based coroutines--use inspect.isawaitable + instead. + +- Issue #24450: Add gi_yieldfrom to generators and cr_await to coroutines. + Contributed by Benno Leslie and Yury Selivanov. + +- Issue #19235: Add new RecursionError exception. Patch by Georg Brandl. + +Library +------- + +- Issue #21750: mock_open.read_data can now be read from each instance, as it + could in Python 3.3. + - Issue #24552: Fix use after free in an error case of the _pickle module. - Issue #24514: tarfile now tolerates number fields consisting of only @@ -189,24 +391,197 @@ Library - Issue #24336: The contextmanager decorator now works with functions with keyword arguments called "func" and "self". Patch by Martin Panter. +- Issue #24522: Fix possible integer overflow in json accelerator module. + - Issue #24489: ensure a previously set C errno doesn't disturb cmath.polar(). +- Issue #24408: Fixed AttributeError in measure() and metrics() methods of + tkinter.Font. + +- Issue #14373: C implementation of functools.lru_cache() now can be used with + methods. + +- Issue #24347: Set KeyError if PyDict_GetItemWithError returns NULL. + +- Issue #24348: Drop superfluous incref/decref. + +- Issue #24359: Check for changed OrderedDict size during iteration. + +- Issue #24368: Support keyword arguments in OrderedDict methods. + +- Issue #24362: Simplify the C OrderedDict fast nodes resize logic. + +- Issue #24377: Fix a ref leak in OrderedDict.__repr__. + +- Issue #24369: Defend against key-changes during iteration. + +Tests +----- + +- Issue #24373: _testmultiphase and xxlimited now use tp_traverse and + tp_finalize to avoid reference leaks encountered when combining tp_dealloc + with PyType_FromSpec (see issue #16690 for details) + +Documentation +------------- + +- Issue #24458: Update documentation to cover multi-phase initialization for + extension modules (PEP 489). Patch by Petr Viktorin. + +- Issue #24351: Clarify what is meant by "identifier" in the context of + string.Template instances. + +Build +----- + +- Issue #24432: Update Windows builds and OS X 10.5 installer to use OpenSSL + 1.0.2c. + + +What's New in Python 3.5.0 beta 2? +================================== + +Release date: 2015-05-31 + +Core and Builtins +----------------- + +- Issue #24284: The startswith and endswith methods of the str class no longer + return True when finding the empty string and the indexes are completely out + of range. + +- Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(), + PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains() + to check for and handle errors correctly. + +- Issue #24328: Fix importing one character extension modules. + +- Issue #11205: In dictionary displays, evaluate the key before the value. + +- Issue #24285: Fixed regression that prevented importing extension modules + from inside packages. Patch by Petr Viktorin. + +Library +------- + +- Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs. + +- Issue #24270: Add math.isclose() and cmath.isclose() functions as per PEP 485. + Contributed by Chris Barker and Tal Einat. + - Issue #5633: Fixed timeit when the statement is a string and the setup is not. - Issue #24326: Fixed audioop.ratecv() with non-default weightB argument. Original patch by David Moore. -- Issue #23840: tokenize.open() now closes the temporary binary file on error - to fix a resource warning. +- Issue #16991: Add a C implementation of OrderedDict. + +- Issue #23934: Fix inspect.signature to fail correctly for builtin types + lacking signature information. Initial patch by James Powell. + + +What's New in Python 3.5.0 beta 1? +================================== + +Release date: 2015-05-24 + +Core and Builtins +----------------- + +- Issue #24276: Fixed optimization of property descriptor getter. + +- Issue #24268: PEP 489: Multi-phase extension module initialization. + Patch by Petr Viktorin. + +- Issue #23955: Add pyvenv.cfg option to suppress registry/environment + lookup for generating sys.path on Windows. + +- Issue #24257: Fixed system error in the comparison of faked + types.SimpleNamespace. + +- Issue #22939: Fixed integer overflow in iterator object. Patch by + Clement Rouault. + +- 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 #24102: Fixed exception type checking in standard error handlers. + +- Issue #15027: The UTF-32 encoder is now 3x to 7x faster. + +- Issue #23290: Optimize set_merge() for cases where the target is empty. + (Contributed by Serhiy Storchaka.) + +- Issue #2292: PEP 448: Additional Unpacking Generalizations. + +- Issue #24096: Make warnings.warn_explicit more robust against mutation of the + warnings.filters list. + +- Issue #23996: Avoid a crash when a delegated generator raises an + unnormalized StopIteration exception. Patch by Stefan Behnel. + +- Issue #23910: Optimize property() getter calls. Patch by Joe Jevnik. + +- Issue #23911: Move path-based importlib bootstrap code to a separate + frozen module. + +- Issue #24192: Fix namespace package imports. + +- Issue #24022: Fix tokenizer crash when processing undecodable source code. + +- Issue #9951: Added a hex() method to bytes, bytearray, and memoryview. + +- Issue #22906: PEP 479: Change StopIteration handling inside generators. + +- Issue #24017: PEP 492: Coroutines with async and await syntax. + +Library +------- + +- Issue #14373: Added C implementation of functools.lru_cache(). Based on + patches by Matt Joiner and Alexey Kachayev. + +- Issue #24230: The tempfile module now accepts bytes for prefix, suffix and dir + parameters and returns bytes in such situations (matching the os module APIs). + +- Issue #22189: collections.UserString now supports __getnewargs__(), + __rmod__(), casefold(), format_map(), isprintable(), and maketrans(). + Patch by Joe Jevnik. + +- Issue #24244: Prevents termination when an invalid format string is + encountered on Windows in strftime. + +- Issue #23973: PEP 484: Add the typing module. + +- Issue #23086: The collections.abc.Sequence() abstract base class added + *start* and *stop* parameters to the index() mixin. + Patch by Devin Jeanpierre. + +- Issue #20035: Replaced the ``tkinter._fix`` module used for setting up the + Tcl/Tk environment on Windows with a private function in the ``_tkinter`` + module that makes no permanent changes to the environment. - Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked cursor type. +- Issue #15836: assertRaises(), assertRaisesRegex(), assertWarns() and + assertWarnsRegex() assertments now check the type of the first argument + to prevent possible user error. Based on patch by Daniel Wagner-Hall. + +- Issue #9858: Add missing method stubs to _io.RawIOBase. Patch by Laura + Rupprecht. + +- Issue #22955: attrgetter, itemgetter and methodcaller objects in the operator + module now support pickling. Added readable and evaluable repr for these + objects. Based on patch by Josh Rosenberg. + - 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 #23780: Improved error message in os.path.join() with single argument. + - Issue #6598: Increased time precision and random number range in email.utils.make_msgid() to strengthen the uniqueness of the message ID. @@ -217,38 +592,85 @@ Library argument instead of a ValueError with a bogus FCI error number. Patch by Jeffrey Armstrong. +- Issue #13866: *quote_via* argument added to urllib.parse.urlencode. + +- Issue #20098: New mangle_from policy option for email, default True + for compat32, but False for all other policies. + +- Issue #24211: The email library now supports RFC 6532: it can generate + headers using utf-8 instead of encoded words. + +- Issue #16314: Added support for the LZMA compression in distutils. + +- Issue #21804: poplib now supports RFC 6856 (UTF8). + +- Issue #18682: Optimized pprint functions for builtin scalar types. + +- Issue #22027: smtplib now supports RFC 6531 (SMTPUTF8). + +- Issue #23488: Random generator objects now consume 2x less memory on 64-bit. + +- Issue #1322: platform.dist() and platform.linux_distribution() functions are + now deprecated. Initial patch by Vajrasky Kok. + +- Issue #22486: Added the math.gcd() function. The fractions.gcd() function now is + deprecated. Based on patch by Mark Dickinson. + +- Issue #24064: Property() docstrings are now writeable. + (Patch by Berker Peksag.) + +- Issue #22681: Added support for the koi8_t encoding. + +- Issue #22682: Added support for the kz1048 encoding. + - Issue #23796: peek and read1 methods of BufferedReader now raise ValueError if they called on a closed object. Patch by John Hergenroeder. -- Issue #24521: Fix possible integer overflows in the pickle module. +- Issue #21795: smtpd now supports the 8BITMIME extension whenever + the new *decode_data* constructor argument is set to False. -- Issue #22931: Allow '[' and ']' in cookie values. +- Issue #24155: optimize heapq.heapify() for better cache performance + when heapifying large lists. + +- Issue #21800: imaplib now supports RFC 5161 (enable), RFC 6855 + (utf8/internationalized email) and automatically encodes non-ASCII + usernames and passwords to UTF8. + +- Issue #20274: When calling a _sqlite.Connection, it now complains if passed + any keyword arguments. Previously it silently ignored them. - Issue #20274: Remove ignored and erroneous "kwargs" parameters from three METH_VARARGS methods on _sqlite.Connection. +- Issue #24134: assertRaises(), assertRaisesRegex(), assertWarns() and + assertWarnsRegex() checks now emits a deprecation warning when callable is + None or keyword arguments except msg is passed in the context manager mode. + +- Issue #24018: Add a collections.abc.Generator abstract base class. + Contributed by Stefan Behnel. + +- Issue #23880: Tkinter's getint() and getdouble() now support Tcl_Obj. + Tkinter's getdouble() now supports any numbers (in particular int). + +- Issue #22619: Added negative limit support in the traceback module. + Based on patch by Dmitry Kazakov. + - Issue #24094: Fix possible crash in json.encode with poorly behaved dict subclasses. -- Asyncio issue 222 / PR 231 (Victor Stinner) -- fix @coroutine - functions without __name__. - - Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes. Patch written by William Orr. -- The keywords attribute of functools.partial is now always a dictionary. - -- Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq's siftup - and siftdown functions. +- Issue #17445: add difflib.diff_bytes() to support comparison of + byte strings (fixes a regression from Python 2). -- 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. +- Issue #23917: Fall back to sequential compilation when ProcessPoolExecutor + doesn't exist. Patch by Claudiu Popa. - Issue #23008: Fixed resolving attributes with boolean value is False in pydoc. - Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't - increment unfinished tasks (this bug was introduced in 3.4.3 when + increment unfinished tasks (this bug was introduced when JoinableQueue was merged with Queue). - Issue #23908: os functions now reject paths with embedded null character @@ -257,64 +679,392 @@ Library - Issue #23728: binascii.crc_hqx() could return an integer outside of the range 0-0xffff for empty data. +- Issue #23887: urllib.error.HTTPError now has a proper repr() representation. + Patch by Berker Peksag. + +- asyncio: New event loop APIs: set_task_factory() and get_task_factory(). + +- asyncio: async() function is deprecated in favour of ensure_future(). + +- Issue #24178: asyncio.Lock, Condition, Semaphore, and BoundedSemaphore + support new 'async with' syntax. Contributed by Yury Selivanov. + +- Issue #24179: Support 'async for' for asyncio.StreamReader. + Contributed by Yury Selivanov. + +- Issue #24184: Add AsyncIterator and AsyncIterable ABCs to + collections.abc. Contributed by Yury Selivanov. + +- Issue #22547: Implement informative __repr__ for inspect.BoundArguments. + Contributed by Yury Selivanov. + +- Issue #24190: Implement inspect.BoundArgument.apply_defaults() method. + Contributed by Yury Selivanov. + +- Issue #20691: Add 'follow_wrapped' argument to + inspect.Signature.from_callable() and inspect.signature(). + Contributed by Yury Selivanov. + +- Issue #24248: Deprecate inspect.Signature.from_function() and + inspect.Signature.from_builtin(). + +- Issue #23898: Fix inspect.classify_class_attrs() to support attributes + with overloaded __eq__ and __bool__. Patch by Mike Bayer. + +- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers + around bound methods. + +IDLE +---- + +- Issue #23184: remove unused names and imports in idlelib. + Initial patch by Al Sweigart. + +Tests +----- + +- Issue #21520: test_zipfile no longer fails if the word 'bad' appears + anywhere in the name of the current directory. + +- Issue #9517: Move script_helper into the support package. + Patch by Christie Wilson. + +Documentation +------------- + +- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter + doc. Remove obsolete example from FAQ. Patch by Martin Panter. + +- Issue #24029: Document the name binding behavior for submodule imports. + +- Issue #24077: Fix typo in man page for -I command option: -s, not -S + +Tools/Demos +----------- + +- Issue #24000: Improved Argument Clinic's mapping of converters to legacy + "format units". Updated the documentation to match. + +- Issue #24001: Argument Clinic converters now use accept={type} + instead of types={'type'} to specify the types the converter accepts. + +- Issue #23330: h2py now supports arbitrary filenames in #include. + +- Issue #24031: make patchcheck now supports git checkouts, too. + + +What's New in Python 3.5.0 alpha 4? +=================================== + +Release date: 2015-04-19 + +Core and Builtins +----------------- + +- Issue #22980: Under Linux, GNU/KFreeBSD and the Hurd, C extensions now include + the architecture triplet in the extension name, to make it easy to test builds + for different ABIs in the same working tree. Under OS X, the extension name + now includes PEP 3149-style information. + +- Issue #22631: Added Linux-specific socket constant CAN_RAW_FD_FRAMES. + Patch courtesy of Joe Jevnik. + +- Issue #23731: Implement PEP 488: removal of .pyo files. + +- Issue #23726: Don't enable GC for user subclasses of non-GC types that + don't add any new fields. Patch by Eugene Toder. + +- 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 #22977: Fixed formatting Windows error messages on Wine. + Patch by Martin Panter. + +- Issue #23466: %c, %o, %x, and %X in bytes formatting now raise TypeError on + non-integer input. + +- Issue #24044: Fix possible null pointer dereference in list.sort in out of + memory conditions. + +- Issue #21354: PyCFunction_New function is exposed by python DLL again. + +Library +------- + +- Issue #23840: tokenize.open() now closes the temporary binary file on error + to fix a resource warning. + +- Issue #16914: new debuglevel 2 in smtplib adds timestamps to debug output. + +- Issue #7159: urllib.request now supports sending auth credentials + automatically after the first 401. This enhancement is a superset of the + enhancement from issue #19494 and supersedes that change. + +- Issue #23703: Fix a regression in urljoin() introduced in 901e4e52b20a. + Patch by Demian Brecht. + +- Issue #4254: Adds _curses.update_lines_cols() Patch by Arnon Yaari + +- Issue #19933: Provide default argument for ndigits in round. Patch by + Vajrasky Kok. + +- Issue #23193: Add a numeric_owner parameter to + tarfile.TarFile.extract and tarfile.TarFile.extractall. Patch by + Michael Vogt and Eric Smith. + +- Issue #23342: Add a subprocess.run() function than returns a CalledProcess + instance for a more consistent API than the existing call* functions. + +- Issue #21217: inspect.getsourcelines() now tries to compute the start and end + lines from the code object, fixing an issue when a lambda function is used as + decorator argument. Patch by Thomas Ballinger and Allison Kaptur. + +- Issue #24521: Fix possible integer overflows in the pickle module. + +- Issue #22931: Allow '[' and ']' in cookie values. + +- The keywords attribute of functools.partial is now always a dictionary. + - Issue #23811: Add missing newline to the PyCompileError error message. Patch by Alex Shkop. -- Issue #17898: Fix exception in gettext.py when parsing certain plural forms. +- Issue #21116: Avoid blowing memory when allocating a multiprocessing shared + array that's larger than 50% of the available RAM. Patch by Médéric Boquien. - Issue #22982: Improve BOM handling when seeking to multiple positions of a writable text file. +- Issue #23464: Removed deprecated asyncio JoinableQueue. + +- Issue #23529: Limit the size of decompressed data when reading from + GzipFile, BZ2File or LZMAFile. This defeats denial of service attacks + using compressed bombs (i.e. compressed payloads which decompress to a huge + size). Patch by Martin Panter and Nikolaus Rath. + +- Issue #21859: Added Python implementation of io.FileIO. + - 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 #23400: Raise same exception on both Python 2 and 3 if sem_open is not + available. Patch by Davin Potts. + +- Issue #10838: The subprocess now module includes SubprocessError and + TimeoutError in its list of exported names for the users wild enough + to use ``from subprocess import *``. + +- Issue #23411: Added DefragResult, ParseResult, SplitResult, DefragResultBytes, + ParseResultBytes, and SplitResultBytes to urllib.parse.__all__. + Patch by Martin Panter. + - Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if the FTP connection failed to fix a ResourceWarning. -- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not - available. Patch by Davin Potts. +- Issue #23853: :meth:`socket.socket.sendall` does no more reset the socket + timeout each time data is sent successfuly. The socket timeout is now the + maximum total duration to send all data. + +- Issue #22721: An order of multiline pprint output of set or dict containing + orderable and non-orderable elements no longer depends on iteration order of + set or dict. - 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. +- Issue #10590: xml.sax.parseString() now supports string argument. + - Issue #23338: Fixed formatting ctypes error messages on Cygwin. Patch by Makoto Kato. +- Issue #15582: inspect.getdoc() now follows inheritance chains. + +- Issue #2175: SAX parsers now support a character stream of InputSource object. + - Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and arbitrary precision integers added in Tcl 8.5. - 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 #23618: :meth:`socket.socket.connect` now waits until the connection + completes instead of raising :exc:`InterruptedError` if the connection is + interrupted by signals, signal handlers don't raise an exception and the + socket is blocking or has a timeout. :meth:`socket.socket.connect` still + raise :exc:`InterruptedError` for non-blocking sockets. + - Issue #21526: Tkinter now supports new boolean type in Tcl 8.5. +- Issue #23836: Fix the faulthandler module to handle reentrant calls to + its signal handlers. + - Issue #23838: linecache now clears the cache and returns an empty result on MemoryError. +- Issue #10395: Added os.path.commonpath(). Implemented in posixpath and ntpath. + Based on patch by Rafik Draoui. + +- Issue #23611: Serializing more "lookupable" objects (such as unbound methods + or nested classes) now are supported with pickle protocols < 4. + +- Issue #13583: sqlite3.Row now supports slice indexing. + - 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 #23485: select.select() is now retried automatically with the + recomputed timeout when interrupted by a signal, except if the signal handler + raises an exception. This change is part of the PEP 475. + +- Issue #23752: When built from an existing file descriptor, io.FileIO() now + only calls fstat() once. Before fstat() was called twice, which was not + necessary. + +- Issue #23704: collections.deque() objects now support __add__, __mul__, and + __imul__(). + +- Issue #23171: csv.Writer.writerow() now supports arbitrary iterables. + - Issue #23745: The new email header parser now handles duplicate MIME parameter names without error, similar to how get_param behaves. +- Issue #22117: Fix os.utime(), it now rounds the timestamp towards minus + infinity (-inf) instead of rounding towards zero. + +- Issue #23310: Fix MagicMock's initializer to work with __methods__, just + like configure_mock(). Patch by Kasia Jachim. + +Build +----- + +- Issue #23817: FreeBSD now uses "1.0" the the SOVERSION as other operating + systems, instead of just "1". + +- Issue #23501: Argument Clinic now generates code into separate files by default. + +Tests +----- + +- Issue #23799: Added test.support.start_threads() for running and + cleaning up multiple threads. + +- Issue #22390: test.regrtest now emits a warning if temporary files or + directories are left after running a test. + +Tools/Demos +----------- + +- Issue #18128: pygettext now uses standard +NNNN format in the + POT-Creation-Date header. + +- Issue #23935: Argument Clinic's understanding of format units + accepting bytes, bytearrays, and buffers is now consistent with + both the documentation and the implementation. + +- Issue #23944: Argument Clinic now wraps long impl prototypes at column 78. + +- Issue #20586: Argument Clinic now ensures that functions without docstrings + have signatures. + +- Issue #23492: Argument Clinic now generates argument parsing code with + PyArg_Parse instead of PyArg_ParseTuple if possible. + +- Issue #23500: Argument Clinic is now smarter about generating the "#ifndef" + (empty) definition of the methoddef macro: it's only generated once, even + if Argument Clinic processes the same symbol multiple times, and it's emitted + at the end of all processing rather than immediately after the first use. + +C API +----- + +- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error + + +What's New in Python 3.5.0 alpha 3? +=================================== + +Release date: 2015-03-28 + +Core and Builtins +----------------- + +- Issue #23573: Increased performance of string search operations (str.find, + str.index, str.count, the in operator, str.split, str.partition) with + arguments of different kinds (UCS1, UCS2, UCS4). + +- Issue #23753: Python doesn't support anymore platforms without stat() or + fstat(), these functions are always required. + +- Issue #23681: The -b option now affects comparisons of bytes with int. + +- Issue #23632: Memoryviews now allow tuple indexing (including for + multi-dimensional memoryviews). + +- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet. + +- Issue #23629: Fix the default __sizeof__ implementation for variable-sized + objects. + +Library +------- + +- Issue #14260: The groupindex attribute of regular expression pattern object + now is non-modifiable mapping. + - 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 #23775: pprint() of OrderedDict now outputs the same representation + as repr(). + +- Issue #23765: Removed IsBadStringPtr calls in ctypes + +- Issue #22364: Improved some re error messages using regex for hints. + - Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes. +- Issue #21717: The zipfile.ZipFile.open function now supports 'x' (exclusive + creation) mode. + - Issue #21802: The reader in BufferedRWPair now is closed even when closing writer failed in BufferedRWPair.close(). +- Issue #23622: Unknown escapes in regular expressions that consist of ``'\'`` + and ASCII letter now raise a deprecation warning and will be forbidden in + Python 3.6. + - 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 #21560: An attempt to write a data of wrong type no longer cause - GzipFile corruption. Original patch by Wolfgang Maier. +- Issue #23502: The pprint module now supports mapping proxies. + +- Issue #17530: pprint now wraps long bytes objects and bytearrays. + +- Issue #22687: Fixed some corner cases in breaking words in tetxtwrap. + Got rid of quadratic complexity in breaking long words. + +- Issue #4727: The copy module now uses pickle protocol 4 (PEP 3154) and + supports copying of instances of classes whose __new__ method takes + keyword-only arguments. + +- Issue #23491: Added a zipapp module to support creating executable zip + file archives of Python code. Registered ".pyz" and ".pyzw" extensions + on Windows for these archives (PEP 441). + +- Issue #23657: Avoid explicit checks for str in zipapp, adding support + for pathlib.Path objects as arguments. + +- Issue #23688: Added support of arbitrary bytes-like objects and avoided + unnecessary copying of memoryview in gzip.GzipFile.write(). + Original patch by Wolfgang Maier. + +- Issue #23252: Added support for writing ZIP files to unseekable streams. - Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes. @@ -326,6 +1076,23 @@ Library and socket open until the garbage collector cleans them up. Patch by Martin Panter. +- Issue #23704: collections.deque() objects now support methods for index(), + insert(), and copy(). This allows deques to be registered as a + MutableSequence and it improves their substitutablity for lists. + +- Issue #23715: :func:`signal.sigwaitinfo` and :func:`signal.sigtimedwait` are + now retried when interrupted by a signal not in the *sigset* parameter, if + the signal handler does not raise an exception. signal.sigtimedwait() + recomputes the timeout with a monotonic clock when it is retried. + +- Issue #23001: Few functions in modules mmap, ossaudiodev, socket, ssl, and + codecs, that accepted only read-only bytes-like object now accept writable + bytes-like object too. + +- Issue #23646: If time.sleep() is interrupted by a signal, the sleep is now + retried with the recomputed delay, except if the signal handler raises an + exception (PEP 475). + - Issue #23136: _strptime now uniformly handles all days in week 0, including Dec 30 of previous year. Based on patch by Jim Carroll. @@ -335,9 +1102,31 @@ Library - Issue #22903: The fake test case created by unittest.loader when it fails importing a test module is now picklable. +- Issue #22181: On Linux, os.urandom() now uses the new getrandom() syscall if + available, syscall introduced in the Linux kernel 3.17. It is more reliable + and more secure, because it avoids the need of a file descriptor and waits + until the kernel has enough entropy. + +- Issue #2211: Updated the implementation of the http.cookies.Morsel class. + Setting attributes key, value and coded_value directly now is deprecated. + update() and setdefault() now transform and check keys. Comparing for + equality now takes into account attributes key, value and coded_value. + copy() now returns a Morsel, not a dict. repr() now contains all attributes. + Optimized checking keys and quoting values. Added new tests. + Original patch by Demian Brecht. + +- Issue #18983: Allow selection of output units in timeit. + Patch by Julian Gindi. + +- Issue #23631: Fix traceback.format_list when a traceback has been mutated. + - Issue #23568: Add rdivmod support to MagicMock() objects. Patch by Håkan Lövdahl. +- Issue #2052: Add charset parameter to HtmlDiff.make_file(). + +- Issue #23668: Support os.truncate and os.ftruncate on Windows. + - Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar. Patch by Demian Brecht. @@ -345,12 +1134,66 @@ Library handle exceptions raised by an iterator. Patch by Alon Diamant and Davin Potts. +- Issue #23581: Add matmul support to MagicMock. Patch by Håkan Lövdahl. + +- Issue #23566: enable(), register(), dump_traceback() and + dump_traceback_later() functions of faulthandler now accept file + descriptors. Patch by Wei Wu. + - Issue #22928: Disabled HTTP header injections in http.client. Original patch by Demian Brecht. - Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with imp.reload(). Patch by Thomas Kluyver. +- Issue #23605: os.walk() now calls os.scandir() instead of os.listdir(). + The usage of os.scandir() reduces the number of calls to os.stat(). + Initial patch written by Ben Hoyt. + +Build +----- + +- Issue #23585: make patchcheck will ensure the interpreter is built. + +Tests +----- + +- Issue #23583: Added tests for standard IO streams in IDLE. + +- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout. + +Tools/Demos +----------- + +- Issue #22826: The result of open() in Tools/freeze/bkfile.py is now better + compatible with regular files (in particular it now supports the context + management protocol). + + +What's New in Python 3.5 alpha 2? +================================= + +Release date: 2015-03-09 + +Core and Builtins +----------------- + +- Issue #23571: PyObject_Call() and PyCFunction_Call() now raise a SystemError + if a function returns a result and raises an exception. The SystemError is + chained to the previous exception. + +Library +------- + +- Issue #22524: New os.scandir() function, part of the PEP 471: "os.scandir() + function -- a better and faster directory iterator". Patch written by Ben + Hoyt. + +- Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address. + +- Issue #21793: BaseHTTPRequestHandler again logs response code as numeric, + not as stringified enum. Patch by Demian Brecht. + - Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST flag on certificate stores when it is available. @@ -359,8 +1202,16 @@ Library - Issue #23504: Added an __all__ to the types module. +- Issue #23563: Optimized utility functions in urllib.parse. + +- Issue #7830: Flatten nested functools.partial. + - Issue #20204: Added the __module__ attribute to _tkinter classes. +- Issue #19980: Improved help() for non-recognized strings. help('') now + shows the help on str. help('help') now shows the help on help(). + Original patch by Mark Lawrence. + - Issue #23521: Corrected pure python implementation of timedelta division. * Eliminated OverflowError from timedelta * float for some floats; @@ -369,12 +1220,17 @@ Library - 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 #22936: Make it possible to show local variables in tracebacks for + both the traceback module and unittest. + +- Issue #15955: Add an option to limit the output size in bz2.decompress(). + Patch by Nikolaus Rath. + - Issue #6639: Module-level turtle functions no longer raise TclError after closing the window. -- Issues #814253, #9179: Warnings now are raised when group references and - conditional group references are used in lookbehind assertions in regular - expressions. +- Issues #814253, #9179: Group references and conditional group references now + work in lookbehind assertions in regular expressions. - Issue #23215: Multibyte codecs with custom error handlers that ignores errors consumed too much memory and raised SystemError or MemoryError. @@ -394,70 +1250,41 @@ Library - Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb module. Original patch by Claudiu Popa. +- Issue #23239: ssl.match_hostname() now supports matching of IP addresses. + - Issue #23146: Fix mishandling of absolute Windows paths with forward slashes in pathlib. -- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h. +- Issue #23096: Pickle representation of floats with protocol 0 now is the same + for both Python and C implementations. -- Issue #23367: Fix possible overflows in the unicodedata module. +- Issue #19105: pprint now more efficiently uses free space at the right. -- Issue #23361: Fix possible overflow in Windows subprocess creation code. +- Issue #14910: Add allow_abbrev parameter to argparse.ArgumentParser. Patch by + Jonathan Paugh, Steven Bethard, paul j3 and Daniel Eriksson. -- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the - entire preamble to a multipart body. - -- Issue #23310: Fix MagicMock's initializer to work with __methods__, just - like configure_mock(). Patch by Kasia Jachim. - -- asyncio: New event loop APIs: set_task_factory() and get_task_factory(). +- Issue #21717: tarfile.open() now supports 'x' (exclusive creation) mode. -- asyncio: async() function is deprecated in favour of ensure_future(). +- Issue #23344: marshal.dumps() is now 20-25% faster on average. -- Issue #23898: Fix inspect.classify_class_attrs() to support attributes - with overloaded __eq__ and __bool__. Patch by Mike Bayer. +- Issue #20416: marshal.dumps() with protocols 3 and 4 is now 40-50% faster on + average. -- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers - around bound methods. - -- Issue #23572: Fixed functools.singledispatch on classes with falsy - metaclasses. Patch by Ethan Furman. - -IDLE ----- - -- Issue #23672: Allow Idle to edit and run files with astral chars in name. - Patch by Mohd Sanad Zaki Rizvi. - -- 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 #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 #13884: Idle menus. Remove tearoff lines. Patch by Roger Serwy. - -- Issue #23184: remove unused names and imports in idlelib. - Initial patch by Al Sweigart. - -Tests ------ +- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h. -- 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 #23367: Fix possible overflows in the unicodedata module. -- Issue #21520: test_zipfile no longer fails if the word 'bad' appears - anywhere in the name of the current directory. +- Issue #23361: Fix possible overflow in Windows subprocess creation code. -- Issue #23799: Added test.support.start_threads() for running and - cleaning up multiple threads. +- logging.handlers.QueueListener now takes a respect_handler_level keyword + argument which, if set to True, will pass messages to handlers taking handler + levels into account. -- Issue #22390: test.regrtest now emits a warning if temporary files or - directories are left after running a test. +- Issue #19705: turtledemo now has a visual sorting algorithm demo. Original + patch from Jason Yeo. -- Issue #23583: Added tests for standard IO streams in IDLE. +- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the + entire preamble to a multipart body. Build ----- @@ -465,64 +1292,34 @@ Build - Issue #23445: pydebug builds now use "gcc -Og" where possible, to make the resulting executable faster. -- Issue #24603: Update Windows builds and OS X 10.5 installer to use OpenSSL - 1.0.2d. +- Issue #23686: Update OS X 10.5 installer build to use OpenSSL 1.0.2a. C API ----- -- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error - -Documentation -------------- - -- Issue #24952: Clarify the default size argument of stack_size() in - the "threading" and "_thread" modules. Patch from Mattip. - -- Issue #24808: Update the types of some PyTypeObject fields. Patch by - Joseph Weston. - -- Issue #22812: Fix unittest discovery examples. - Patch from Pam McA'Nulty. - -- 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 #20769: Improve reload() docs. Patch by Dorian Pula. - -- Issue #23589: Remove duplicate sentence from the FAQ. Patch by Yongzhi Pan. - -- Issue #24729: Correct IO tutorial to match implementation regarding - encoding parameter to open function. - -- Issue #24351: Clarify what is meant by "identifier" in the context of - string.Template instances. - -- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter - doc. Remove obsolete example from FAQ. Patch by Martin Panter. - -- Issue #24029: Document the name binding behavior for submodule imports. +- Issue #20204: Deprecation warning is now raised for builtin type without the + __module__ attribute. -- Issue #24077: Fix typo in man page for -I command option: -s, not -S. +Windows +------- -Tools/Demos ------------ +- Issue #23465: Implement PEP 486 - Make the Python Launcher aware of virtual + environments. Patch by Paul Moore. -- Issue #23330: h2py now supports arbitrary filenames in #include. +- Issue #23437: Make user scripts directory versioned on Windows. Patch by Paul + Moore. -- Issue #24031: make patchcheck now supports git checkouts, too. +What's New in Python 3.5 alpha 1? +================================= -What's New in Python 3.4.3? -=========================== - -Release date: 2015-02-23 +Release date: 2015-02-08 Core and Builtins ----------------- +- Issue #23285: PEP 475 - EINTR handling. + - Issue #22735: Fix many edge cases (including crashes) involving custom mro() implementations. @@ -532,17 +1329,46 @@ Core and Builtins - Issue #21295: Revert some changes (issue #16795) to AST line numbers and column offsets that constituted a regression. +- Issue #22986: Allow changing an object's __class__ between a dynamic type and + static type in some cases. + +- Issue #15859: PyUnicode_EncodeFSDefault(), PyUnicode_EncodeMBCS() and + PyUnicode_EncodeCodePage() now raise an exception if the object is not an + Unicode object. For PyUnicode_EncodeFSDefault(), it was already the case on + platforms other than Windows. Patch written by Campbell Barton. + - Issue #21408: The default __ne__() now returns NotImplemented if __eq__() returned NotImplemented. Original patch by Martin Panter. - Issue #23321: Fixed a crash in str.decode() when error handler returned replacment string longer than mailformed input data. +- Issue #22286: The "backslashreplace" error handlers now works with + decoding and translating. + +- Issue #23253: Delay-load ShellExecute[AW] in os.startfile for reduced + startup overhead on Windows. + +- Issue #22038: pyatomic.h now uses stdatomic.h or GCC built-in functions for + atomic memory access if available. Patch written by Vitor de Lima and Gustavo + Temple. + +- Issue #20284: %-interpolation (aka printf) formatting added for bytes and + bytearray. + - Issue #23048: Fix jumping out of an infinite while loop in the pdb. - Issue #20335: bytes constructor now raises TypeError when encoding or errors is specified with non-string argument. Based on patch by Renaud Blanch. +- Issue #22834: If the current working directory ends up being set to a + non-existent directory then import will no longer raise FileNotFoundError. + +- Issue #22869: Move the interpreter startup & shutdown code to a new + dedicated pylifecycle.c module + +- Issue #22847: Improve method cache efficiency. + - Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff bytes on a 32-bit platform. @@ -552,12 +1378,28 @@ Core and Builtins - Issue #22643: Fix integer overflow in Unicode case operations (upper, lower, title, swapcase, casefold). +- Issue #17636: Circular imports involving relative imports are now + supported. + - Issue #22604: Fix assertion error in debug mode when dividing a complex number by (nan+0j). +- Issue #21052: Do not raise ImportWarning when sys.path_hooks or sys.meta_path + are set to None. + +- Issue #16518: Use 'bytes-like object required' in error messages that + previously used the far more cryptic "'x' does not support the buffer + protocol. + - Issue #22470: Fixed integer overflow issues in "backslashreplace", "xmlcharrefreplace", and "surrogatepass" error handlers. +- Issue #22540: speed up `PyObject_IsInstance` and `PyObject_IsSubclass` in the + common case that the second argument has metaclass `type`. + +- Issue #18711: Add a new `PyErr_FormatV` function, similar to `PyErr_Format` + but accepting a `va_list` argument. + - Issue #22520: Fix overflow checking when generating the repr of a unicode object. @@ -565,6 +1407,138 @@ Core and Builtins - Issue #22518: Fix integer overflow issues in latin-1 encoding. +- Issue #16324: _charset parameter of MIMEText now also accepts + email.charset.Charset instances. Initial patch by Claude Paroz. + +- Issue #1764286: Fix inspect.getsource() to support decorated functions. + Patch by Claudiu Popa. + +- Issue #18554: os.__all__ includes posix functions. + +- Issue #21391: Use os.path.abspath in the shutil module. + +- Issue #11471: avoid generating a JUMP_FORWARD instruction at the end of + an if-block if there is no else-clause. Original patch by Eugene Toder. + +- Issue #22215: Now ValueError is raised instead of TypeError when str or bytes + argument contains not permitted null character or byte. + +- Issue #22258: Fix the internal function set_inheritable() on Illumos. + This platform exposes the function ``ioctl(FIOCLEX)``, but calling it fails + with errno is ENOTTY: "Inappropriate ioctl for device". set_inheritable() + now falls back to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``). + +- Issue #21389: Displaying the __qualname__ of the underlying function in the + repr of a bound method. + +- Issue #22206: Using pthread, PyThread_create_key() now sets errno to ENOMEM + and returns -1 (error) on integer overflow. + +- Issue #20184: Argument Clinic based signature introspection added for + 30 of the builtin functions. + +- Issue #22116: C functions and methods (of the 'builtin_function_or_method' + type) can now be weakref'ed. Patch by Wei Wu. + +- Issue #22077: Improve index error messages for bytearrays, bytes, lists, + and tuples by adding 'or slices'. Added ', not <typename' for bytearrays. + Original patch by Claudiu Popa. + +- Issue #20179: Apply Argument Clinic to bytes and bytearray. + Patch by Tal Einat. + +- Issue #22082: Clear interned strings in slotdefs. + +- Upgrade Unicode database to Unicode 7.0.0. + +- Issue #21897: Fix a crash with the f_locals attribute with closure + variables when frame.clear() has been called. + +- Issue #21205: Add a new ``__qualname__`` attribute to generator, the + qualified name, and use it in the representation of a generator + (``repr(gen)``). The default name of the generator (``__name__`` attribute) + is now get from the function instead of the code. Use ``gen.gi_code.co_name`` + to get the name of the code. + +- Issue #21669: With the aid of heuristics in SyntaxError.__init__, the + parser now attempts to generate more meaningful (or at least more search + engine friendly) error messages when "exec" and "print" are used as + statements. + +- Issue #21642: If the conditional if-else expression, allow an integer written + with no space between itself and the ``else`` keyword (e.g. ``True if 42else + False``) to be valid syntax. + +- Issue #21523: Fix over-pessimistic computation of the stack effect of + some opcodes in the compiler. This also fixes a quadratic compilation + time issue noticeable when compiling code with a large number of "and" + and "or" operators. + +- Issue #21418: Fix a crash in the builtin function super() when called without + argument and without current frame (ex: embedded Python). + +- Issue #21425: Fix flushing of standard streams in the interactive + interpreter. + +- Issue #21435: In rare cases, when running finalizers on objects in cyclic + trash a bad pointer dereference could occur due to a subtle flaw in + internal iteration logic. + +- Issue #21377: PyBytes_Concat() now tries to concatenate in-place when the + first argument has a reference count of 1. Patch by Nikolaus Rath. + +- Issue #20355: -W command line options now have higher priority than the + PYTHONWARNINGS environment variable. Patch by Arfrever. + +- Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c. + +- Issue #20904: Support setting FPU precision on m68k. + +- Issue #21209: Fix sending tuples to custom generator objects with the yield + from syntax. + +- Issue #21193: pow(a, b, c) now raises ValueError rather than TypeError when b + is negative. Patch by Josh Rosenberg. + +- PEP 465 and Issue #21176: Add the '@' operator for matrix multiplication. + +- Issue #21134: Fix segfault when str is called on an uninitialized + UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object. + +- Issue #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by + Andreas Schwab. + +- Issue #20929: Add a type cast to avoid shifting a negative number. + +- Issue #20731: Properly position in source code files even if they + are opened in text mode. Patch by Serhiy Storchaka. + +- Issue #20637: Key-sharing now also works for instance dictionaries of + subclasses. Patch by Peter Ingebretson. + +- Issue #8297: Attributes missing from modules now include the module name + in the error text. Original patch by ysj.ray. + +- Issue #19995: %c, %o, %x, and %X now raise TypeError on non-integer input. + +- Issue #19655: The ASDL parser - used by the build process to generate code for + managing the Python AST in C - was rewritten. The new parser is self contained + and does not require to carry long the spark.py parser-generator library; + spark.py was removed from the source base. + +- Issue #12546: Allow \x00 to be used as a fill character when using str, int, + float, and complex __format__ methods. + +- Issue #20480: Add ipaddress.reverse_pointer. Patch by Leon Weber. + +- Issue #13598: Modify string.Formatter to support auto-numbering of + replacement fields. It now matches the behavior of str.format() in + this regard. Patches by Phil Elson and Ramchandra Apte. + +- Issue #8931: Make alternate formatting ('#') for type 'c' raise an + exception. In versions prior to 3.5, '#' with 'c' had no effect. Now + specifying it is an error. Patch by Torsten Landschoff. + - Issue #23165: Perform overflow checks before allocating memory in the _Py_char2wchar function. @@ -573,9 +1547,24 @@ Library - Issue #23399: pyvenv creates relative symlinks where possible. +- Issue #20289: cgi.FieldStorage() now supports the context management + protocol. + +- Issue #13128: Print response headers for CONNECT requests when debuglevel + > 0. Patch by Demian Brecht. + +- Issue #15381: Optimized io.BytesIO to make less allocations and copyings. + +- Issue #22818: Splitting on a pattern that could match an empty string now + raises a warning. Patterns that can only match empty strings are now + rejected. + - Issue #23099: Closing io.BytesIO with exported buffer is rejected now to prevent corrupting exported buffer. +- Issue #23326: Removed __ne__ implementations. Since fixing default __ne__ + implementation in issue #21408 they are redundant. + - Issue #23363: Fix possible overflow in itertools.permutations. - Issue #23364: Fix possible overflow in itertools.product. @@ -591,6 +1580,14 @@ Library is now always restored or swapped, not only if why is WHY_YIELD or WHY_RETURN. Patch co-written with Antoine Pitrou. +- Issue #14099: Restored support of writing ZIP files to tellable but + non-seekable streams. + +- Issue #14099: Writing to ZipFile and reading multiple ZipExtFiles is + threadsafe now. + +- Issue #19361: JSON decoder now raises JSONDecodeError instead of ValueError. + - Issue #18518: timeit now rejects statements which can't be compiled outside a function or a loop (e.g. "return" or "break"). @@ -605,47 +1602,85 @@ Library - Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed) headers with no key rather than assuming the body has started. +- Issue #20188: Support Application-Layer Protocol Negotiation (ALPN) in the ssl + module. + +- Issue #23133: Pickling of ipaddress objects now produces more compact and + portable representation. + - Issue #23248: Update ssl error codes from latest OpenSSL git master. +- Issue #23266: Much faster implementation of ipaddress.collapse_addresses() + when there are many non-consecutive addresses. + - Issue #23098: 64-bit dev_t is now supported in the os module. +- Issue #21817: When an exception is raised in a task submitted to a + ProcessPoolExecutor, the remote traceback is now displayed in the + parent process. Patch by Claudiu Popa. + +- Issue #15955: Add an option to limit output size when decompressing LZMA + data. Patch by Nikolaus Rath and Martin Panter. + - Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure" as they are written in the standard. - Issue #23063: In the disutils' check command, fix parsing of reST with code or code-block directives. -- 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 #23209, #23225: selectors.BaseSelector.get_key() now raises a + RuntimeError if the selector is closed. And selectors.BaseSelector.close() + now clears its internal reference to the selector mapping to break a + reference cycle. Initial patch written by Martin Richard. -- 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 #17911: Provide a way to seed the linecache for a PEP-302 module + without actually loading the code. -- 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 #17911: Provide a new object API for traceback, including the ability + to not lookup lines at all until the traceback is actually rendered, without + any trace of the original objects being kept alive. -- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol - version. +- Issue #19777: Provide a home() classmethod on Path objects. Contributed + by Victor Salgado and Mayank Tripathi. -- Issue #23132: Mitigate regression in speed and clarity in functools.total_ordering. +- Issue #23206: Make ``json.dumps(..., ensure_ascii=False)`` as fast as the + default case of ``ensure_ascii=True``. Patch by Naoki Inada. -- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), - instead of reading /dev/urandom, to get pseudo-random bytes. +- Issue #23185: Add math.inf and math.nan constants. + +- Issue #23186: Add ssl.SSLObject.shared_ciphers() and + ssl.SSLSocket.shared_ciphers() to fetch the client's list ciphers sent at + handshake. + +- Issue #23143: Remove compatibility with OpenSSLs older than 0.9.8. + +- Issue #23132: Improve performance and introspection support of comparison + methods created by functool.total_ordering. + +- Issue #19776: Add a expanduser() method on Path objects. - Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and fragment when it redirects to add a trailing slash. +- Issue #21793: Added http.HTTPStatus enums (i.e. HTTPStatus.OK, + HTTPStatus.NOT_FOUND). Patch by Demian Brecht. + - Issue #23093: In the io, module allow more operations to work on detached streams. +- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol + version. + +- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), + instead of reading /dev/urandom, to get pseudo-random bytes. + - Issue #19104: pprint now produces evaluable output for wrapped strings. - Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter. +- Issue #22783: Pickling now uses the NEWOBJ opcode instead of the NEWOBJ_EX + opcode if possible. + - Issue #15513: Added a __sizeof__ implementation for pickle classes. - Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can @@ -667,12 +1702,25 @@ Library - Issue #1218234: Fix inspect.getsource() to load updated source of reloaded module. Initial patch by Berker Peksag. +- Issue #21740: Support wrapped callables in doctest. Patch by Claudiu Popa. + +- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no + FD is registered. + - Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the context's check_hostname attribute over the *check_hostname* parameter. +- Issue #22696: Add function :func:`sys.is_finalizing` to know about + interpreter shutdown. + - Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode will return. This resolves CVE-2013-1753. +- Issue #14099: ZipFile.open() no longer reopen the underlying file. Objects + returned by ZipFile.open() can now operate independently of the ZipFile even + if the ZipFile was created by passing in a file-like object as the first + argument to the constructor. + - 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. @@ -682,14 +1730,30 @@ Library - Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails. Original patch by Martin Panter. +- Issue #22407: Deprecated the use of re.LOCALE flag with str patterns or + re.ASCII. It was newer worked. + +- Issue #22902: The "ip" command is now used on Linux to determine MAC address + in uuid.getnode(). Pach by Bruno Cauet. + - Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor. +- Issue #22389: Add contextlib.redirect_stderr(). + +- 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 #22915: SAX parser now supports files opened with file descriptor or bytes path. - Issue #22609: Constructors and update methods of mapping classes in the collections module now accept the self keyword argument. +- Issue #22940: Add readline.append_history_file. + +- Issue #19676: Added the "namereplace" error handler. + - Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler. - Issue #22921: Allow SSLContext to take the *hostname* parameter even if @@ -698,14 +1762,19 @@ Library - Issue #22894: TestCase.subTest() would cause the test suite to be stopped when in failfast mode, even in the absence of failures. -- Issue #22638: SSLv3 is now disabled throughout the standard library. - It can still be enabled by instantiating a SSLContext manually. +- Issue #22796: HTTP cookie parsing is now stricter, in order to protect + against potential injection attacks. - Issue #22370: Windows detection in pathlib is now more robust. - Issue #22841: Reject coroutines in asyncio add_signal_handler(). Patch by Ludovic.Gasc. +- Issue #19494: Added urllib.request.HTTPBasicPriorAuthHandler. Patch by + Matej Cepl. + +- Issue #22578: Added attributes to the re.error class. + - Issue #22849: Fix possible double free in the io.TextIOWrapper constructor. - Issue #12728: Different Unicode characters having the same uppercase but @@ -714,6 +1783,14 @@ Library - Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian platforms. +- Issue #21650: Add an `--sort-keys` option to json.tool CLI. + +- Issue #22824: Updated reprlib output format for sets to use set literals. + Patch contributed by Berker Peksag. + +- Issue #22824: Updated reprlib output format for arrays to display empty + arrays without an unnecessary empty list. Suggested by Serhiy Storchaka. + - Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x. Based on patch by Martin Panter. @@ -727,16 +1804,15 @@ Library - Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2 and above. Patch by Tim Graham. -- 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 #22776: Brought excluded code into the scope of a try block in SysLogHandler.emit(). - Issue #22665: Add missing get_terminal_size and SameFileError to shutil.__all__. +- Issue #6623: Remove deprecated Netrc class in the ftplib module. Patch by + Matt Chaput. + - Issue #17381: Fixed handling of case-insensitive ranges in regular expressions. @@ -750,18 +1826,53 @@ Library doesn't work. This allows use with special filesystems such as VirtualBox shared folders. +- Issue #22217: Implemented reprs of classes in the zipfile module. + +- Issue #22457: Honour load_tests in the start_dir of discovery. + +- Issue #18216: gettext now raises an error when a .mo file has an + unsupported major version number. Patch by Aaron Hill. + +- Issue #13918: Provide a locale.delocalize() function which can remove + locale-specific number formatting from a string representing a number, + without then converting it to a specific type. Patch by Cédric Krier. + +- Issue #22676: Make the pickling of global objects which don't have a + __module__ attribute less slow. + - Issue #18853: Fixed ResourceWarning in shlex.__nain__. - Issue #9351: Defaults set with set_defaults on an argparse subparser are no longer ignored when also set on the parent parser. +- Issue #7559: unittest test loading ImportErrors are reported as import errors + with their import exception rather than as attribute errors after the import + has already failed. + +- Issue #19746: Make it possible to examine the errors from unittest + discovery without executing the test suite. The new `errors` attribute + on TestLoader exposes these non-fatal errors encountered during discovery. + - 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 #22638: SSLv3 is now disabled throughout the standard library. + It can still be enabled by instantiating a SSLContext manually. + - Issue #22641: In asyncio, the default SSL context for client connections is now created using ssl.create_default_context(), for stronger security. +- Issue #17401: Include closefd in io.FileIO repr. + +- Issue #21338: Add silent mode for compileall. quiet parameters of + compile_{dir, file, path} functions now have a multilevel value. Also, + -q option of the CLI now have a multilevel value. Patch by Thomas Kluyver. + +- Issue #20152: Convert the array and cmath modules to Argument Clinic. + +- Issue #18643: Add socket.socketpair() on Windows. + - Issue #22435: Fix a file descriptor leak when SocketServer bind fails. - Issue #13096: Fixed segfault in CTypes POINTER handling of large @@ -770,9 +1881,19 @@ Library - Issue #11694: Raise ConversionError in xdrlib as documented. Patch by Filip Gruszczyński and Claudiu Popa. +- Issue #19380: Optimized parsing of regular expressions. + +- Issue #1519638: Now unmatched groups are replaced with empty strings in re.sub() + and re.subn(). + +- Issue #18615: sndhdr.what/whathdr now return a namedtuple. + - Issue #22462: Fix pyexpat's creation of a dummy frame to make it appear in exception tracebacks. +- Issue #21965: Add support for in-memory SSL to the ssl module. Patch + by Geert Jansen. + - Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called with an iterator alive. @@ -782,149 +1903,38 @@ Library - Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules is mutated while iterating. Patch by Olivier Grisel. +- Issue #11271: concurrent.futures.Executor.map() now takes a *chunksize* + argument to allow batching of tasks in child processes and improve + performance of ProcessPoolExecutor. Patch by Dan O'Reilly. + +- Issue #21883: os.path.join() and os.path.relpath() now raise a TypeError with + more helpful error message for unsupported or mismatched types of arguments. + - Issue #22219: The zipfile module CLI now adds entries for directories (including empty directories) in ZIP file. - Issue #22449: In the ssl.SSLContext.load_default_certs, consult the environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows. +- Issue #22508: The email.__version__ variable has been removed; the email + code is no longer shipped separately from the stdlib, and __version__ + hasn't been updated in several releases. + - Issue #20076: Added non derived UTF-8 aliases to locale aliases table. - Issue #20079: Added locales supported in glibc 2.18 to locale alias table. -- 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 #22517: When a io.BufferedRWPair object is deallocated, clear its - weakrefs. - -- Issue #22448: Improve canceled timer handles cleanup to prevent - unbound memory usage. Patch by Joshua Moore-Oliva. - -- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no - FD is registered. +- Issue #20218: Added convenience methods read_text/write_text and read_bytes/ + write_bytes to pathlib.Path objects. -IDLE ----- +- Issue #22437: Number of capturing groups in regular expression is no longer + limited by 100. -- 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 #16893: Update Idle doc chapter to match current Idle and add new - information. - -- Issue #3068: Add Idle extension configuration dialog to Options menu. - Changes are written to HOME/.idlerc/config-extensions.cfg. - Original patch by Tal Einat. - -- Issue #16233: A module browser (File : Class Browser, Alt+C) requires a - 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 #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 #21986: Code objects are not normally pickled by the pickle module. - To match this, they are no longer pickled when running under Idle. - -- Issue #23180: Rename IDLE "Windows" menu item to "Window". - Patch by Al Sweigart. - -Tests ------ +- Issue #17442: InteractiveInterpreter now displays the full chained traceback + in its showtraceback method, to match the built in interactive interpreter. - Issue #23392: Added tests for marshal C API that works with FILE*. -- Issue #18982: Add tests for CLI of the calendar module. - -- Issue #19548: Added some additional checks to test_codecs to ensure that - statements in the updated documentation remain accurate. Patch by Martin - Panter. - -- Issue #22838: All test_re tests now work with unittest test discovery. - -- Issue #22173: Update lib2to3 tests to use unittest test discovery. - -- Issue #16000: Convert test_curses to use unittest. - -- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not - present. Patch by Remi Pointel. - -- 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. - -- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level - values (like 0.9.8zc). - -- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout. - -Build ------ - -- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure - script. - -- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support - SSL 3. - -- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by - Jonathan Hosmer. - -- Issue #18096: Fix library order returned by python-config. - -- Issue #17219: Add library build dir for Python extension cross-builds. - -- Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer. - -C API ------ - -- Issue #22079: PyType_Ready() now checks that statically allocated type has - no dynamically allocated bases. - -Documentation -------------- - -- 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 #22914: Update the Python 2/3 porting HOWTO to describe a more automated - approach. - -- Issue #21514: The documentation of the json module now refers to new JSON RFC - 7159 instead of obsoleted RFC 4627. - -Tools/Demos ------------ - -- Issue #22314: pydoc now works when the LINES environment variable is set. - -Windows -------- - -- Issue #17896: The Windows build scripts now expect external library sources - to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``. - -- Issue #17717: The Windows build scripts now use a copy of NASM pulled from - svn.python.org to build OpenSSL. - -- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j. - - -What's New in Python 3.4.2? -=========================== - -Release date: 2014-10-06 - -Library -------- - Issue #10510: distutils register and upload methods now use HTML standards compliant CRLF line endings. @@ -932,15 +1942,27 @@ Library - Issue #9850: Fixed macpath.join() for empty first component. Patch by Oleg Oshmyan. +- Issue #5309: distutils' build and build_ext commands now accept a ``-j`` + option to enable parallel building of extension modules. + +- Issue #22448: Improve canceled timer handles cleanup to prevent + unbound memory usage. Patch by Joshua Moore-Oliva. + - Issue #22427: TemporaryDirectory no longer attempts to clean up twice when used in the with statement in generator. +- Issue #22362: Forbidden ambiguous octal escapes out of range 0-0o377 in + regular expressions. + - Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS directory attributes. - Issue #21866: ZipFile.close() no longer writes ZIP64 central directory records if allowZip64 is false. +- Issue #22278: Fix urljoin problem with relative urls, a regression observed + after changes to issue22118 were submitted. + - Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re module. Removed trailing spaces in debugging output. @@ -950,47 +1972,18 @@ Library - Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects line buffering, rather than block buffering. Patch by Akira Li. - -What's New in Python 3.4.2rc1? -============================== - -Release date: 2014-09-22 - -Core and Builtins ------------------ - -- Issue #22258: Fix the the internal function set_inheritable() on Illumos. - This platform exposes the function ``ioctl(FIOCLEX)``, but calling it fails - with errno is ENOTTY: "Inappropriate ioctl for device". set_inheritable() - now falls back to the slower ``fcntl()`` (``F_GETFD`` and then ``F_SETFD``). - -- Issue #21669: With the aid of heuristics in SyntaxError.__init__, the - parser now attempts to generate more meaningful (or at least more search - engine friendly) error messages when "exec" and "print" are used as - statements. - -- Issue #21642: If the conditional if-else expression, allow an integer written - with no space between itself and the ``else`` keyword (e.g. ``True if 42else - False``) to be valid syntax. - -- Issue #21523: Fix over-pessimistic computation of the stack effect of - some opcodes in the compiler. This also fixes a quadratic compilation - time issue noticeable when compiling code with a large number of "and" - and "or" operators. - -Library -------- - - Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now - a method. Since EmailMessage is provisional, we can change the API in a - maintenance release, but we use a trick to remain backward compatible with - 3.4.0/1. + a method. - Issue #21079: Fix email.message.EmailMessage.is_attachment to return the correct result when the header has parameters as well as a value. - Issue #22247: Add NNTPError to nntplib.__all__. +- 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 #4180: The warnings registries are now reset when the filters are modified. @@ -1002,6 +1995,9 @@ Library with non-standard cookie handling in some Web browsers. Reported by Sergey Bobrov. +- Issue #20537: logging methods now accept an exception instance as well as a + Boolean value or exception tuple. Thanks to Yury Selivanov for the patch. + - Issue #22384: An exception in Tkinter callback no longer crashes the program when it is run with pythonw.exe. @@ -1010,6 +2006,9 @@ Library - Issue #21147: sqlite3 now raises an exception if the request contains a null character instead of truncate it. Based on patch by Victor Stinner. +- Issue #13968: The glob module now supports recursive search in + subdirectories using the "**" pattern. + - Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with empty string or tuple argument. @@ -1018,12 +2017,31 @@ Library - Issue #22338: Fix a crash in the json module on memory allocation failure. +- Issue #12410: imaplib.IMAP4 now supports the context management protocol. + Original patch by Tarek Ziadé. + +- Issue #21270: We now override tuple methods in mock.call objects so that + they can be used as normal call attributes. + +- Issue #16662: load_tests() is now unconditionally run when it is present in + a package's __init__.py. TestLoader.loadTestsFromModule() still accepts + use_load_tests, but it is deprecated and ignored. A new keyword-only + attribute `pattern` is added and documented. Patch given by Robert Collins, + tweaked by Barry Warsaw. + - Issue #22226: First letter no longer is stripped from the "status" key in the result of Treeview.heading(). - Issue #19524: Fixed resource leak in the HTTP connection when an invalid response is received. Patch by Martin Panter. +- Issue #20421: Add a .version() method to SSL sockets exposing the actual + protocol version in use. + +- Issue #19546: configparser exceptions no longer expose implementation details. + Chained KeyErrors are removed, which leads to cleaner tracebacks. Patch by + Claudiu Popa. + - Issue #22051: turtledemo no longer reloads examples to re-run them. Initialization of variables and gui setup should be done in main(), which is called each time a demo is run, but not on import. @@ -1040,23 +2058,57 @@ Library - Issue #18132: Turtledemo buttons no longer disappear when the window is shrunk. Original patches by Jan Kanis and Lita Cho. +- Issue #22043: time.monotonic() is now always available. + ``threading.Lock.acquire()``, ``threading.RLock.acquire()`` and socket + operations now use a monotonic clock, instead of the system clock, when a + timeout is used. + +- Issue #21527: Add a default number of workers to ThreadPoolExecutor equal + to 5 times the number of CPUs. Patch by Claudiu Popa. + - Issue #22216: smtplib now resets its state more completely after a quit. The most obvious consequence of the previous behavior was a STARTTLS failure during a connect/starttls/quit/connect/starttls sequence. +- Issue #22098: ctypes' BigEndianStructure and LittleEndianStructure now + define an empty __slots__ so that subclasses don't always get an instance + dict. Patch by Claudiu Popa. + - Issue #22185: Fix an occasional RuntimeError in threading.Condition.wait() caused by mutation of the waiters queue without holding the lock. Patch by Doug Zongker. +- Issue #22287: On UNIX, _PyTime_gettimeofday() now uses + clock_gettime(CLOCK_REALTIME) if available. As a side effect, Python now + depends on the librt library on Solaris and on Linux (only with glibc older + than 2.17). + - Issue #22182: Use e.args to unpack exceptions correctly in distutils.file_util.move_file. Patch by Claudiu Popa. - The webbrowser module now uses subprocess's start_new_session=True rather than a potentially risky preexec_fn=os.setsid call. +- Issue #22042: signal.set_wakeup_fd(fd) now raises an exception if the file + descriptor is in blocking mode. + +- Issue #16808: inspect.stack() now returns a named tuple instead of a tuple. + Patch by Daniel Shahaf. + - Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode. -- Issue #22191: Fix warnings.__all__. +- Issue #2527: Add a *globals* argument to timeit functions, in order to + override the globals namespace in which the timed code is executed. + Patch by Ben Roberts. + +- Issue #22118: Switch urllib.parse to use RFC 3986 semantics for the + resolution of relative URLs, rather than RFCs 1808 and 2396. + Patch by Demian Brecht. + +- Issue #21549: Added the "members" parameter to TarFile.list(). + +- Issue #19628: Allow compileall recursion depth to be specified with a -r + option. - Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows. @@ -1064,6 +2116,8 @@ Library - Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names. +- Issue #15381: Optimized line reading in io.BytesIO. + - Issue #8797: Raise HTTPError on failed Basic Authentication immediately. Initial patch by Sam Bull. @@ -1079,6 +2133,14 @@ Library - Issue #17923: glob() patterns ending with a slash no longer match non-dirs on AIX. Based on patch by Delhallt. +- Issue #21725: Added support for RFC 6531 (SMTPUTF8) in smtpd. + +- Issue #22176: Update the ctypes module's libffi to v3.1. This release + adds support for the Linux AArch64 and POWERPC ELF ABIv2 little endian + architectures. + +- Issue #5411: Added support for the "xztar" format in the shutil module. + - Issue #21121: Don't force 3rd party C extensions to be built with -Werror=declaration-after-statement. @@ -1086,18 +2148,57 @@ Library when unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the __new__() method. +- Issue #20170: Convert posixmodule to use Argument Clinic. + +- Issue #21539: Add a *exists_ok* argument to `Pathlib.mkdir()` to mimic + `mkdir -p` and `os.makedirs()` functionality. When true, ignore + FileExistsErrors. Patch by Berker Peksag. + +- Issue #22127: Bypass IDNA for pure-ASCII host names in the socket module + (in particular for numeric IPs). + +- Issue #21047: set the default value for the *convert_charrefs* argument + of HTMLParser to True. Patch by Berker Peksag. + +- Add an __all__ to html.entities. + +- Issue #15114: the strict mode and argument of HTMLParser, HTMLParser.error, + and the HTMLParserError exception have been removed. + +- Issue #22085: Dropped support of Tk 8.3 in Tkinter. + - Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk. In particular this allows to initialize images from binary data. +- Issue #22003: When initialized from a bytes object, io.BytesIO() now + defers making a copy until it is mutated, improving performance and + memory use on some use cases. Patch by David Wilson. + +- Issue #22018: On Windows, signal.set_wakeup_fd() now also supports sockets. + A side effect is that Python depends to the WinSock library. + +- Issue #22054: Add os.get_blocking() and os.set_blocking() functions to get + and set the blocking mode of a file descriptor (False if the O_NONBLOCK flag + is set, True otherwise). These functions are not available on Windows. + - Issue #17172: Make turtledemo start as active on OS X even when run with subprocess. Patch by Lita Cho. - Issue #21704: Fix build error for _multiprocessing when semaphores are not available. Patch by Arfrever Frehtes Taifersar Arahesis. +- Issue #20173: Convert sha1, sha256, sha512 and md5 to ArgumentClinic. + Patch by Vajrasky Kok. + - Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError on closed socket. repr(socket.socket) already works fine. +- Issue #22033: Reprs of most Python implemened classes now contain actual + class name instead of hardcoded one. + +- Issue #21947: The dis module can now disassemble generator-iterator + objects based on their gi_code attribute. Patch by Clement Rouault. + - Issue #16133: The asynchat.async_chat.handle_read() method now ignores BlockingIOError exceptions. @@ -1109,16 +2210,42 @@ Library sequence is used on some terminal (ex: TERM=xterm-256color") to enable support of 8 bit characters. +- Issue #4350: Removed a number of out-of-dated and non-working for a long time + Tkinter methods. + +- Issue #6167: Scrollbar.activate() now returns the name of active element if + the argument is not specified. Scrollbar.set() now always accepts only 2 + arguments. + +- Issue #15275: Clean up and speed up the ntpath module. + - Issue #21888: plistlib's load() and loads() now work if the fmt parameter is specified. +- Issue #22032: __qualname__ instead of __name__ is now always used to format + fully qualified class names of Python implemented classes. + +- Issue #22031: Reprs now always use hexadecimal format with the "0x" prefix + when contain an id in form " at 0x...". + +- Issue #22018: signal.set_wakeup_fd() now raises an OSError instead of a + ValueError on ``fstat()`` failure. + - Issue #21044: tarfile.open() now handles fileobj with an integer 'name' attribute. Based on patch by Antoine Pietri. -- Issue #21867: Prevent turtle crash due to invalid undo buffer size. +- Issue #21966: Respect -q command-line option when code module is ran. - Issue #19076: Don't pass the redundant 'file' argument to self.error(). +- Issue #16382: Improve exception message of warnings.warn() for bad + category. Initial patch by Phil Elson. + +- Issue #21932: os.read() now uses a :c:func:`Py_ssize_t` type instead of + :c:type:`int` for the size to support reading more than 2 GB at once. On + Windows, the size is truncted to INT_MAX. As any call to os.read(), the OS + may read less bytes than the number of requested bytes. + - Issue #21942: Fixed source file viewing in pydoc's server mode on Windows. - Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError @@ -1136,8 +2263,8 @@ Library - Issue #21714: Disallow the construction of invalid paths using Path.with_name(). Original patch by Antony Lee. -- Issue #21897: Fix a crash with the f_locals attribute with closure - variables when frame.clear() has been called. +- Issue #15014: Added 'auth' method to smtplib to make implementing auth + mechanisms simpler, and used it internally in the login method. - Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman. @@ -1145,8 +2272,17 @@ Library - Issue #21090: io.FileIO.readall() does not ignore I/O errors anymore. Before, it ignored I/O errors if at least the first C call read() succeed. +- Issue #5800: headers parameter of wsgiref.headers.Headers is now optional. + Initial patch by Pablo Torres Navarrete and SilentGhost. + - Issue #21781: ssl.RAND_add() now supports strings longer than 2 GB. +- Issue #21679: Prevent extraneous fstat() calls during open(). Patch by + Bohuslav Kabrda. + +- Issue #21863: cProfile now displays the module name of C extension functions, + in addition to their own name. + - Issue #11453: asyncore: emit a ResourceWarning when an unclosed file_wrapper object is destroyed. The destructor now closes the file if needed. The close() method can now be called twice: the second call does nothing. @@ -1156,23 +2292,17 @@ Library - Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is discarded after parsing, so the input file isn't unexpectedly closed. +- Issue #20295: imghdr now recognizes OpenEXR format images. + - Issue #21729: Used the "with" statement in the dbm.dumb module to ensure files closing. Patch by Claudiu Popa. - Issue #21491: socketserver: Fix a race condition in child processes reaping. -- Issue #21832: Require named tuple inputs to be exact strings. - -- Issue #19145: The times argument for itertools.repeat now handles - negative values the same way for keyword arguments as it does for - positional arguments. - -- Issue #21812: turtle.shapetransform did not tranform the turtle on the - first call. (Issue identified and fixed by Lita Cho.) +- Issue #21719: Added the ``st_file_attributes`` field to os.stat_result on + Windows. -- Issue #21635: The difflib SequenceMatcher.get_matching_blocks() method - cache didn't match the actual result. The former was a list of tuples - and the latter was a list of named tuples. +- Issue #21832: Require named tuple inputs to be exact strings. - Issue #21722: The distutils "upload" command now exits with a non-zero return code when uploading fails. Patch by Martin Dengler. @@ -1180,24 +2310,35 @@ Library - Issue #21723: asyncio.Queue: support any type of number (ex: float) for the maximum size. Patch written by Vajrasky Kok. +- Issue #21711: support for "site-python" directories has now been removed + from the site module (it was deprecated in 3.4). + +- Issue #17552: new socket.sendfile() method allowing to send a file over a + socket by using high-performance os.sendfile() on UNIX. + Patch by Giampaolo Rodola'. + +- Issue #18039: dbm.dump.open() now always creates a new database when the + flag has the value 'n'. Patch by Claudiu Popa. + - Issue #21326: Add a new is_closed() method to asyncio.BaseEventLoop. run_forever() and run_until_complete() methods of asyncio.BaseEventLoop now raise an exception if the event loop was closed. -- Issue #21774: Fixed NameError for an incorrect variable reference in the - XML Minidom code for creating processing instructions. - (Found and fixed by Claudiu Popa.) - - Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths before checking for a CGI script at that path. - Issue #21310: Fixed possible resource leak in failed open(). +- Issue #21256: Printout of keyword args should be in deterministic order in + a mock function call. This will help to write better doctests. + - Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods. - Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a valid file. +- Issue #21515: tempfile.TemporaryFile now uses os.O_TMPFILE flag is available. + - Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods that use 'self' in the example code is generated correctly. @@ -1208,6 +2349,9 @@ Library limits would otherwise allow. On systems with a functioning /proc/self/fd or /dev/fd interface the max is now ignored and all fds are closed. +- Issue #20383: Introduce importlib.util.module_from_spec() as the preferred way + to create a new module. + - Issue #21552: Fixed possible integer overflow of too long string lengths in the tkinter module on 64-bit platforms. @@ -1216,8 +2360,14 @@ Library error bubble up as this "bad data" appears in many real world zip files in the wild and is ignored by other zip tools. +- Issue #13742: Added "key" and "reverse" parameters to heapq.merge(). + (First draft of patch contributed by Simon Sapin.) + - Issue #21402: tkinter.ttk now works when default root window is not set. +- Issue #3015: _tkinter.create() now creates tkapp object with wantobject=1 by + default. + - Issue #10203: sqlite3.Row now truly supports sequence protocol. In particulr it supports reverse() and negative indices. Original patch by Claudiu Popa. @@ -1225,97 +2375,21 @@ Library interpreter aliases (python, python3) are now created by copying rather than symlinking. -- Issue #14710: pkgutil.get_loader() no longer raises an exception when None is - found in sys.modules. +- Issue #20197: Added support for the WebP image type in the imghdr module. + Patch by Fabrice Aneche and Claudiu Popa. -- Issue #14710: pkgutil.find_loader() no longer raises an exception when a - module doesn't exist. +- Issue #21513: Speedup some properties of IP addresses (IPv4Address, + IPv6Address) such as .is_private or .is_multicast. -- Issue #21481: Argparse equality and inequality tests now return - NotImplemented when comparing to an unknown type. - -- Issue #8743: Fix interoperability between set objects and the - collections.Set() abstract base class. - -- Issue #13355: random.triangular() no longer fails with a ZeroDivisionError - when low equals high. +- Issue #21137: Improve the repr for threading.Lock() and its variants + by showing the "locked" or "unlocked" status. Patch by Berker Peksag. - Issue #21538: The plistlib module now supports loading of binary plist files when reference or offset size is not a power of two. -- Issue #21801: Validate that __signature__ is None or an instance of Signature. +- Issue #21455: Add a default backlog to socket.listen(). -- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler - due to possible uninitialized _config_vars. - -- Issue #21323: Fix http.server to again handle scripts in CGI subdirectories, - broken by the fix for security issue #19435. Patch by Zach Byrne. - -Extension Modules ------------------ - -- Issue #22176: Update the ctypes module's libffi to v3.1. This release - adds support for the Linux AArch64 and POWERPC ELF ABIv2 little endian - architectures. - -Build ------ - -- Issue #15661: python.org OS X installers are now distributed as signed - installer packages compatible with the Gatekeeper security feature. - -- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and - above. Patch by Zachary Turner. - -- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/ - now display special message when and only when there are failures. - -- Issue #17095: Fix Modules/Setup *shared* support. - -- Issue #21811: Anticipated fixes to support OS X versions > 10.9. - -- Issue #21166: Prevent possible segfaults and other random failures of - python --generate-posix-vars in pybuilddir.txt build target. - -IDLE ----- - -- Issue #17390: Adjust Editor window title; remove 'Python', - move version to end. - -- Issue #14105: Idle debugger breakpoints no longer disappear - when inseting or deleting lines. - -- Issue #17172: Turtledemo can now be run from Idle. - Currently, the entry is on the Help menu, but it may move to Run. - Patch by Ramchandra Apt and Lita Cho. - -- Issue #21765: Add support for non-ascii identifiers to HyperParser. - -- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav - Heblikar. - -- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster. - -- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar. - -- Issue #21686: add unittest for HyperParser. Original patch by Saimadhav - Heblikar. - -- Issue #12387: Add missing upper(lower)case versions of default Windows key - bindings for Idle so Caps Lock does not disable them. Patch by Roger Serwy. - -- Issue #21695: Closing a Find-in-files output window while the search is - still in progress no longer closes Idle. - -- Issue #18910: Add unittest for textView. Patch by Phil Webster. - -- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar. - -- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster. - -Tests ------ +- Issue #21525: Most Tkinter methods which accepted tuples now accept lists too. - Issue #22166: With the assistance of a new internal _codecs._forget_codec helping function, test_codecs now clears the encoding caches to avoid the @@ -1324,100 +2398,19 @@ Tests - Issue #22236: Tkinter tests now don't reuse default root window. New root window is created for every test class. -- Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier - de Gaye. - -- Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it - now uses unittest test discovery to find its tests. - -- Issue #22104: regrtest.py no longer holds a reference to the suite of tests - loaded from test modules that don't define test_main(). - -- Issue #22002: Added ``load_package_tests`` function to test.support and used - it to implement/augment test discovery in test_asyncio, test_email, - test_importlib, test_json, and test_tools. - -- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks - to William Orr. - -- Issue #21918: Converted test_tools from a module to a package containing - separate test files for each tested script. - -- Issue #20155: Changed HTTP method names in failing tests in test_httpservers - so that packet filtering software (specifically Windows Base Filtering Engine) - does not interfere with the transaction semantics expected by the tests. - -- Issue #19493: Refactored the ctypes test package to skip tests explicitly - rather than silently. - -- Issue #18492: All resources are now allowed when tests are not run by - regrtest.py. - -- Issue #21634: Fix pystone micro-benchmark: use floor division instead of true - division to benchmark integers instead of floating point numbers. Set pystone - version to 1.2. Patch written by Lennart Regebro. - -- Issue #21605: Added tests for Tkinter images. - -- Issue #21493: Added test for ntpath.expanduser(). Original patch by - Claudiu Popa. - -- Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok. - -- Issue #21522: Added Tkinter tests for Listbox.itemconfigure(), - PanedWindow.paneconfigure(), and Menu.entryconfigure(). - -Documentation -------------- - -- Issue #21777: The binary sequence methods on bytes and bytearray are now - documented explicitly, rather than assuming users will be able to derive - the expected behaviour from the behaviour of the corresponding str methods. - -Windows -------- - -- Issue #21671, #22160, CVE-2014-0224: The bundled version of OpenSSL has been - updated to 1.0.1i. - -- Issue #10747: Use versioned labels in the Windows start menu. - Patch by Olive Kilburn. - -Tools/Demos ------------ - -- Issue #22201: Command-line interface of the zipfile module now correctly - extracts ZIP files with directory entries. Patch by Ryan Wilson. - -- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3. - Patch by Zachary Ware. - -- Issue #21629: Fix Argument Clinic's "--converters" feature. - - -What's New in Python 3.4.1? -=========================== - -Release date: 2014-05-18 - -Core and Builtins ------------------ - -- Issue #21418: Fix a crash in the builtin function super() when called without - argument and without current frame (ex: embedded Python). +- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial + shape. -- Issue #21425: Fix flushing of standard streams in the interactive - interpreter. +- Issue #20826: Optimize ipaddress.collapse_addresses(). -- Issue #21435: In rare cases, when running finalizers on objects in cyclic - trash a bad pointer dereference could occur due to a subtle flaw in - internal iteration logic. +- Issue #21487: Optimize ipaddress.summarize_address_range() and + ipaddress.{IPv4Network,IPv6Network}.subnets(). -Library -------- +- Issue #21486: Optimize parsing of netmasks in ipaddress.IPv4Network and + ipaddress.IPv6Network. -- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial - shape. +- Issue #13916: Disallowed the surrogatepass error handler for non UTF-* + encodings. - Issue #20998: Fixed re.fullmatch() of repeated single character pattern with ignore case. Original patch by Matthew Barnett. @@ -1425,80 +2418,73 @@ Library - Issue #21075: fileinput.FileInput now reads bytes from standard stream if binary mode is specified. Patch by Sam Kimbrel. -- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a - flush() on the underlying binary stream. Patch by akira. +- Issue #19775: Add a samefile() method to pathlib Path objects. Initial + patch by Vajrasky Kok. -- Issue #21470: Do a better job seeding the random number generator by - using enough bytes to span the full state space of the Mersenne Twister. +- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject + (and friends). - Issue #21398: Fix an unicode error in the pydoc pager when the documentation contains characters not encodable to the stdout encoding. -Tests ------ - -- Issue #17756: Fix test_code test when run from the installed location. - -- Issue #17752: Fix distutils tests when run from the installed location. - -IDLE ----- - -- Issue #18104: Add idlelib/idle_test/htest.py with a few sample tests to begin - consolidating and improving human-validated tests of Idle. Change other files - as needed to work with htest. Running the module as __main__ runs all tests. +- Issue #16531: ipaddress.IPv4Network and ipaddress.IPv6Network now accept + an (address, netmask) tuple argument, so as to easily construct network + objects from existing addresses. +- Issue #21156: importlib.abc.InspectLoader.source_to_code() is now a + staticmethod. -What's New in Python 3.4.1rc1? -============================== +- Issue #21424: Simplified and optimized heaqp.nlargest() and nmsmallest() + to make fewer tuple comparisons. -Release date: 2014-05-05 +- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a + flush() on the underlying binary stream. Patch by akira. -Core and Builtins ------------------ +- Issue #18314: Unlink now removes junctions on Windows. Patch by Kim Gräsman -- Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c. +- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0. + In porting to Argument Clinic, the first two arguments were reversed. -- Issue #21209: Fix sending tuples to custom generator objects with the yield - from syntax. +- Issue #21407: _decimal: The module now supports function signatures. -- Issue #21134: Fix segfault when str is called on an uninitialized - UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object. +- Issue #10650: Remove the non-standard 'watchexp' parameter from the + Decimal.quantize() method in the Python version. It had never been + present in the C version. -- Issue #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by - Andreas Schwab. +- Issue #21469: Reduced the risk of false positives in robotparser by + checking to make sure that robots.txt has been read or does not exist + prior to returning True in can_fetch(). -- Issue #20929: Add a type cast to avoid shifting a negative number. +- Issue #19414: Have the OrderedDict mark deleted links as unusable. + This gives an early failure if the link is deleted during iteration. -- Issue #20731: Properly position in source code files even if they - are opened in text mode. Patch by Serhiy Storchaka. +- Issue #21421: Add __slots__ to the MappingViews ABC. + Patch by Josh Rosenberg. -- Issue #20637: Key-sharing now also works for instance dictionaries of - subclasses. Patch by Peter Ingebretson. +- Issue #21101: Eliminate double hashing in the C speed-up code for + collections.Counter(). -- Issue #12546: Allow \x00 to be used as a fill character when using str, int, - float, and complex __format__ methods. - -- Issue #13598: Modify string.Formatter to support auto-numbering of - replacement fields. It now matches the behavior of str.format() in - this regard. Patches by Phil Elson and Ramchandra Apte. - -Library -------- +- Issue #21321: itertools.islice() now releases the reference to the source + iterator when the slice is exhausted. Patch by Anton Afanasyev. -- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0. - In porting to Argument Clinic, the first two arguments were reversed. +- Issue #21057: TextIOWrapper now allows the underlying binary stream's + read() or read1() method to return an arbitrary bytes-like object + (such as a memoryview). Patch by Nikolaus Rath. -- Issue #21469: Reduced the risk of false positives in robotparser by - checking to make sure that robots.txt has been read or does not exist - prior to returning True in can_fetch(). +- Issue #20951: SSLSocket.send() now raises either SSLWantReadError or + SSLWantWriteError on a non-blocking socket if the operation would block. + Previously, it would return 0. Patch by Nikolaus Rath. -- Issue #21321: itertools.islice() now releases the reference to the source - iterator when the slice is exhausted. Patch by Anton Afanasyev. +- Issue #13248: removed previously deprecated asyncore.dispatcher __getattr__ + cheap inheritance hack. - Issue #9815: assertRaises now tries to clear references to local variables in the exception's traceback. +- Issue #19940: ssl.cert_time_to_seconds() now interprets the given time + string in the UTC timezone (as specified in RFC 5280), not the local + timezone. + - Issue #13204: Calling sys.flags.__new__ would crash the interpreter, now it raises a TypeError. @@ -1522,9 +2508,25 @@ Library - Issue #12220: mindom now raises a custom ValueError indicating it doesn't support spaces in URIs instead of letting a 'split' ValueError bubble up. +- Issue #21068: The ssl.PROTOCOL* constants are now enum members. + +- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. + +- Issue #21262: New method assert_not_called for Mock. + It raises AssertionError if the mock has been called. + +- Issue #21238: New keyword argument `unsafe` to Mock. It raises + `AttributeError` incase of an attribute startswith assert or assret. + +- Issue #20896: ssl.get_server_certificate() now uses PROTOCOL_SSLv23, not + PROTOCOL_SSLv3, for maximum compatibility. + - Issue #21239: patch.stopall() didn't work deterministically when the same name was patched more than once. +- Issue #21203: Updated fileConfig and dictConfig to remove inconsistencies. + Thanks to Jure Koren for the patch. + - Issue #21222: Passing name keyword argument to mock.create_autospec now works. @@ -1554,17 +2556,31 @@ Library - Issue #21171: Fixed undocumented filter API of the rot13 codec. Patch by Berker Peksag. +- Issue #20539: Improved math.factorial error message for large positive inputs + and changed exception type (OverflowError -> ValueError) for large negative + inputs. + - Issue #21172: isinstance check relaxed from dict to collections.Mapping. - Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError if path and sock are specified at the same time. +- Issue #21136: Avoid unnecessary normalization of Fractions resulting from + power and other operations. Patch by Raymond Hettinger. + +- Issue #17621: Introduce importlib.util.LazyLoader. + +- Issue #21076: signal module constants were turned into enums. + Patch by Giampaolo Rodola'. + +- Issue #20636: Improved the repr of Tkinter widgets. + +- Issue #19505: The items, keys, and values views of OrderedDict now support + reverse iteration using reversed(). + - Issue #21149: Improved thread-safety in logging cleanup during interpreter shutdown. Thanks to Devin Jeanpierre for the patch. -- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a - TypeError if the second argument is not a string or compiled regex. - - Issue #21058: Fix a leak of file descriptor in :func:`tempfile.NamedTemporaryFile`, close the file descriptor if :func:`io.open` fails @@ -1574,6 +2590,9 @@ Library - Issue #21013: Enhance ssl.create_default_context() when used for server side sockets to provide better security by default. +- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a + TypeError if the second argument is not a string or compiled regex. + - Issue #20633: Replace relative import by absolute import. - Issue #20980: Stop wrapping exception when using ThreadPool. @@ -1587,6 +2606,8 @@ Library curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise default to "prime256v1". +- Issue #21000: Improve the command-line interface of json.tool. + - Issue #20995: Enhance default ciphers used by the ssl module to enable better security an prioritize perfect forward secrecy. @@ -1594,6 +2615,24 @@ Library - Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests. +- Issue #20627: xmlrpc.client.ServerProxy is now a context manager. + +- Issue #19165: The formatter module now raises DeprecationWarning instead of + PendingDeprecationWarning. + +- Issue #13936: Remove the ability of datetime.time instances to be considered + false in boolean contexts. + +- Issue #18931: selectors module now supports /dev/poll on Solaris. + Patch by Giampaolo Rodola'. + +- Issue #19977: When the ``LC_TYPE`` locale is the POSIX locale (``C`` locale), + :py:data:`sys.stdin` and :py:data:`sys.stdout` are now using the + ``surrogateescape`` error handler, instead of the ``strict`` error handler. + +- Issue #20574: Implement incremental decoder for cp65001 code (Windows code + page 65001, Microsoft UTF-8). + - Issue #20879: Delay the initialization of encoding and decoding tables for base32, ascii85 and base85 codecs in the base64 module, and delay the initialization of the unquote_to_bytes() table of the urllib.parse module, to @@ -1628,6 +2667,14 @@ Library - Issue #19748: On AIX, time.mktime() now raises an OverflowError for year outsize range [1902; 2037]. +- Issue #19573: inspect.signature: Use enum for parameter kind constants. + +- Issue #20726: inspect.signature: Make Signature and Parameter picklable. + +- Issue #17373: Add inspect.Signature.from_callable method. + +- Issue #20378: Improve repr of inspect.Signature and inspect.Parameter. + - Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for missing keyword-only arguments. Patch by Jeremiah Lowin. @@ -1644,6 +2691,12 @@ Library positional-or-keyword arguments passed as keyword arguments become keyword-only. +- Issue #20334: inspect.Signature and inspect.Parameter are now hashable. + Thanks to Antony Lee for bug reports and suggestions. + +- Issue #15916: doctest.DocTestSuite returns an empty unittest.TestSuite instead + of raising ValueError if it finds no tests + - Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug in yield-from implementation in CPythons prior to 3.4.1. @@ -1656,17 +2709,90 @@ Library - Issue #11571: Ensure that the turtle window becomes the topmost window when launched on OS X. -Extension Modules ------------------ +- Issue #21801: Validate that __signature__ is None or an instance of Signature. -- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. +- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler + due to possible uninitialized _config_vars. -- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject - (and friends). +- Issue #21323: Fix http.server to again handle scripts in CGI subdirectories, + broken by the fix for security issue #19435. Patch by Zach Byrne. + +- Issue #22733: Fix ffi_prep_args not zero-extending argument values correctly + on 64-bit Windows. + +- Issue #23302: Default to TCP_NODELAY=1 upon establishing an HTTPConnection. + Removed use of hard-coded MSS as it's an optimization that's no longer needed + with Nagle disabled. IDLE ---- +- 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 #16893: Update Idle doc chapter to match current Idle and add new + information. + +- Issue #3068: Add Idle extension configuration dialog to Options menu. + Changes are written to HOME/.idlerc/config-extensions.cfg. + Original patch by Tal Einat. + +- Issue #16233: A module browser (File : Class Browser, Alt+C) requires a + 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 #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 #21986: Code objects are not normally pickled by the pickle module. + To match this, they are no longer pickled when running under Idle. + +- Issue #17390: Adjust Editor window title; remove 'Python', + move version to end. + +- Issue #14105: Idle debugger breakpoints no longer disappear + when inseting or deleting lines. + +- Issue #17172: Turtledemo can now be run from Idle. + Currently, the entry is on the Help menu, but it may move to Run. + Patch by Ramchandra Apt and Lita Cho. + +- Issue #21765: Add support for non-ascii identifiers to HyperParser. + +- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav + Heblikar. + +- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster. + +- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar. + +- Issue #21686: add unittest for HyperParser. Original patch by Saimadhav + Heblikar. + +- Issue #12387: Add missing upper(lower)case versions of default Windows key + bindings for Idle so Caps Lock does not disable them. Patch by Roger Serwy. + +- Issue #21695: Closing a Find-in-files output window while the search is + still in progress no longer closes Idle. + +- Issue #18910: Add unittest for textView. Patch by Phil Webster. + +- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar. + +- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster. + +- Issue #21477: htest.py - Improve framework, complete set of tests. + Patches by Saimadhav Heblikar + +- Issue #18104: Add idlelib/idle_test/htest.py with a few sample tests to begin + consolidating and improving human-validated tests of Idle. Change other files + as needed to work with htest. Running the module as __main__ runs all tests. + - Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation. - Issue #21284: Paragraph reformat test passes after user changes reformat width. @@ -1674,10 +2800,52 @@ IDLE - Issue #17654: Ensure IDLE menus are customized properly on OS X for non-framework builds and for all variants of Tk. +- Issue #23180: Rename IDLE "Windows" menu item to "Window". + Patch by Al Sweigart. + Build ----- -- The Windows build now includes OpenSSL 1.0.1g +- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure + script. + +- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support + SSL 3. + +- Issue #22592: Drop support of the Borland C compiler to build Python. The + distutils module still supports it to build extensions. + +- Issue #22591: Drop support of MS-DOS, especially of the DJGPP compiler + (MS-DOS port of GCC). + +- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by + Jonathan Hosmer. + +- Issue #22359: Remove incorrect uses of recursive make. Patch by Jonas + Wagner. + +- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and + above. Patch by Zachary Turner. + +- Issue #18093: the programs that embed the CPython runtime are now in a + separate "Programs" directory, rather than being kept in the Modules + directory. + +- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/ + now display special message when and only when there are failures. + +- Issue #21141: The Windows build process no longer attempts to find Perl, + instead relying on OpenSSL source being configured and ready to build. The + ``PCbuild\build_ssl.py`` script has been re-written and re-named to + ``PCbuild\prepare_ssl.py``, and takes care of configuring OpenSSL source + for both 32 and 64 bit platforms. OpenSSL sources obtained from + svn.python.org will always be pre-configured and ready to build. + +- Issue #21037: Add a build option to enable AddressSanitizer support. + +- Issue #19962: The Windows build process now creates "python.bat" in the + root of the source tree, which passes all arguments through to the most + recently built interpreter. - Issue #21285: Refactor and fix curses configure check to always search in a ncursesw directory. @@ -1686,12 +2854,60 @@ Build include directories if they aren't already being searched. This avoids an explicit runtime library dependency. +- Issue #17861: Tools/scripts/generate_opcode_h.py automatically regenerates + Include/opcode.h from Lib/opcode.py if the later gets any change. + - Issue #20644: OS X installer build support for documentation build changes in 3.4.1: assume externally supplied sphinx-build is available in /usr/bin. +- Issue #20022: Eliminate use of deprecated bundlebuilder in OS X builds. + +- Issue #15968: Incorporated Tcl, Tk, and Tix builds into the Windows build + solution. + +- Issue #17095: Fix Modules/Setup *shared* support. + +- Issue #21811: Anticipated fixes to support OS X versions > 10.9. + +- Issue #21166: Prevent possible segfaults and other random failures of + python --generate-posix-vars in pybuilddir.txt build target. + +- Issue #18096: Fix library order returned by python-config. + +- Issue #17219: Add library build dir for Python extension cross-builds. + +- Issue #22919: Windows build updated to support VC 14.0 (Visual Studio 2015), + which will be used for the official release. + +- Issue #21236: Build _msi.pyd with cabinet.lib instead of fci.lib + +- Issue #17128: Use private version of OpenSSL for OS X 10.5+ installer. + C API ----- +- Issue #14203: Remove obsolete support for view==NULL in PyBuffer_FillInfo(), + bytearray_getbuffer(), bytesiobuf_getbuffer() and array_buffer_getbuf(). + All functions now raise BufferError in that case. + +- Issue #22445: PyBuffer_IsContiguous() now implements precise contiguity + tests, compatible with NumPy's NPY_RELAXED_STRIDES_CHECKING compilation + flag. Previously the function reported false negatives for corner cases. + +- Issue #22079: PyType_Ready() now checks that statically allocated type has + no dynamically allocated bases. + +- Issue #22453: Removed non-documented macro PyObject_REPR(). + +- Issue #18395: Rename ``_Py_char2wchar()`` to :c:func:`Py_DecodeLocale`, + rename ``_Py_wchar2char()`` to :c:func:`Py_EncodeLocale`, and document + these functions. + +- Issue #21233: Add new C functions: PyMem_RawCalloc(), PyMem_Calloc(), + PyObject_Calloc(), _PyObject_GC_Calloc(). bytes(int) is now using + ``calloc()`` instead of ``malloc()`` for large objects which is faster and + use less memory. + - Issue #20942: PyImport_ImportFrozenModuleObject() no longer sets __file__ to match what importlib does; this affects _frozen_importlib as well as any module loaded using imp.init_frozen(). @@ -1699,9 +2915,29 @@ C API Documentation ------------- +- 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 #22394: Doc/Makefile now supports ``make venv PYTHON=../python`` to + create a venv for generating the documentation, e.g., + ``make html PYTHON=venv/bin/python3``. + +- Issue #21514: The documentation of the json module now refers to new JSON RFC + 7159 instead of obsoleted RFC 4627. + +- Issue #21777: The binary sequence methods on bytes and bytearray are now + documented explicitly, rather than assuming users will be able to derive + the expected behaviour from the behaviour of the corresponding str methods. + +- Issue #6916: undocument deprecated asynchat.fifo class. + - Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make it much more comparable to ``Doc/Makefile``. +- Issue #21312: Update the thread_foobar.h template file to include newer + threading APIs. Patch by Jack McCracken. + - Issue #21043: Remove the recommendation for specific CA organizations and to mention the ability to load the OS certificates. @@ -1719,6 +2955,73 @@ Documentation Tests ----- +- Issue #18982: Add tests for CLI of the calendar module. + +- Issue #19548: Added some additional checks to test_codecs to ensure that + statements in the updated documentation remain accurate. Patch by Martin + Panter. + +- Issue #22838: All test_re tests now work with unittest test discovery. + +- Issue #22173: Update lib2to3 tests to use unittest test discovery. + +- Issue #16000: Convert test_curses to use unittest. + +- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not + present. Patch by Remi Pointel. + +- Issue #20746: Fix test_pdb to run in refleak mode (-R). Patch by Xavier + de Gaye. + +- Issue #22060: test_ctypes has been somewhat cleaned up and simplified; it + now uses unittest test discovery to find its tests. + +- Issue #22104: regrtest.py no longer holds a reference to the suite of tests + loaded from test modules that don't define test_main(). + +- Issue #22111: Assorted cleanups in test_imaplib. Patch by Milan Oberkirch. + +- Issue #22002: Added ``load_package_tests`` function to test.support and used + it to implement/augment test discovery in test_asyncio, test_email, + test_importlib, test_json, and test_tools. + +- Issue #21976: Fix test_ssl to accept LibreSSL version strings. Thanks + to William Orr. + +- Issue #21918: Converted test_tools from a module to a package containing + separate test files for each tested script. + +- Issue #9554: Use modern unittest features in test_argparse. Initial patch by + Denver Coneybeare and Radu Voicilas. + +- Issue #20155: Changed HTTP method names in failing tests in test_httpservers + so that packet filtering software (specifically Windows Base Filtering Engine) + does not interfere with the transaction semantics expected by the tests. + +- Issue #19493: Refactored the ctypes test package to skip tests explicitly + rather than silently. + +- Issue #18492: All resources are now allowed when tests are not run by + regrtest.py. + +- Issue #21634: Fix pystone micro-benchmark: use floor division instead of true + division to benchmark integers instead of floating point numbers. Set pystone + version to 1.2. Patch written by Lennart Regebro. + +- Issue #21605: Added tests for Tkinter images. + +- Issue #21493: Added test for ntpath.expanduser(). Original patch by + Claudiu Popa. + +- Issue #19925: Added tests for the spwd module. Original patch by Vajrasky Kok. + +- Issue #21522: Added Tkinter tests for Listbox.itemconfigure(), + PanedWindow.paneconfigure(), and Menu.entryconfigure(). + +- Issue #17756: Fix test_code test when run from the installed location. + +- Issue #17752: Fix distutils tests when run from the installed location. + - Issue #18604: Consolidated checks for GUI availability. All platforms now at least check whether Tk can be instantiated when the GUI resource is requested. @@ -1736,6 +3039,8 @@ Tests - Issue #21097: Move test_namespace_pkgs into test_importlib. +- Issue #21503: Use test_both() consistently in test_importlib. + - Issue #20939: Avoid various network test failures due to new redirect of http://www.python.org/ to https://www.python.org: use http://www.example.com instead. @@ -1746,9 +3051,41 @@ Tests - Issue #21093: Prevent failures of ctypes test_macholib on OS X if a copy of libz exists in $HOME/lib or /usr/local/lib. +- 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. + +- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level + values (like 0.9.8zc). + Tools/Demos ----------- +- Issue #22314: pydoc now works when the LINES environment variable is set. + +- Issue #22615: Argument Clinic now supports the "type" argument for the + int converter. This permits using the int converter with enums and + typedefs. + +- Issue #20076: The makelocalealias.py script no longer ignores UTF-8 mapping. + +- Issue #20079: The makelocalealias.py script now can parse the SUPPORTED file + from glibc sources and supports command line options for source paths. + +- Issue #22201: Command-line interface of the zipfile module now correctly + extracts ZIP files with directory entries. Patch by Ryan Wilson. + +- Issue #22120: For functions using an unsigned integer return converter, + Argument Clinic now generates a cast to that type for the comparison + to -1 in the generated code. (This supresses a compilation warning.) + +- Issue #18974: Tools/scripts/diff.py now uses argparse instead of optparse. + +- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3. + Patch by Zachary Ware. + +- Issue #21629: Fix Argument Clinic's "--converters" feature. + - Add support for ``yield from`` to 2to3. - Add support for the PEP 465 matrix multiplication operator to 2to3. @@ -1761,6 +3098,32 @@ Tools/Demos - Issue #20535: PYTHONWARNING no longer affects the run_tests.py script. Patch by Arfrever Frehtes Taifersar Arahesis. +Windows +------- + +- Issue #23260: Update Windows installer + +- The bundled version of Tcl/Tk has been updated to 8.6.3. The most visible + result of this change is the addition of new native file dialogs when + running on Windows Vista or newer. See Tcl/Tk's TIP 432 for more + information. Also, this version of Tcl/Tk includes support for Windows 10. + +- Issue #17896: The Windows build scripts now expect external library sources + to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``. + +- Issue #17717: The Windows build scripts now use a copy of NASM pulled from + svn.python.org to build OpenSSL. + +- Issue #21907: Improved the batch scripts provided for building Python. + +- Issue #22644: The bundled version of OpenSSL has been updated to 1.0.1j. + +- Issue #10747: Use versioned labels in the Windows start menu. + Patch by Olive Kilburn. + +- Issue #22980: .pyd files with a version and platform tag (for example, + ".cp35-win32.pyd") will now be loaded in preference to those without tags. + What's New in Python 3.4.0? =========================== @@ -5880,6 +7243,10 @@ C-API Documentation ------------- +- Issue #23006: Improve the documentation and indexing of dict.__missing__. + Add an entry in the language datamodel special methods section. + Revise and index its discussion in the stdtypes mapping/dict section. + - Issue #17701: Improving strftime documentation. - Issue #18440: Clarify that `hash()` can truncate the value returned from an @@ -6042,4141 +7409,4 @@ Windows - Issue #18569: The installer now adds .py to the PATHEXT variable when extensions are registered. Patch by Paul Moore. - -What's New in Python 3.3.0? -=========================== - -*Release date: 29-Sep-2012* - -Core and Builtins ------------------ - -- Issue #16046: Fix loading sourceless legacy .pyo files. - -- Issue #16060: Fix refcounting bug when `__trunc__()` returns an object whose - `__int__()` gives a non-integer. Patch by Serhiy Storchaka. - -Extension Modules ------------------ - -- Issue #16012: Fix a regression in pyexpat. The parser's `UseForeignDTD()` - method doesn't require an argument again. - - -What's New in Python 3.3.0 Release Candidate 3? -=============================================== - -*Release date: 23-Sep-2012* - -Core and Builtins ------------------ - -- Issue #15900: Fix reference leak in `PyUnicode_TranslateCharmap()`. - -- Issue #15926: Fix crash after multiple reinitializations of the interpreter. - -- Issue #15895: Fix FILE pointer leak in one error branch of - `PyRun_SimpleFileExFlags()` when filename points to a pyc/pyo file, closeit is - false an and set_main_loader() fails. - -- Fixes for a few crash and memory leak regressions found by Coverity. - -Library -------- - -- Issue #15882: Change `_decimal` to accept any coefficient tuple when - constructing infinities. This is done for backwards compatibility with - decimal.py: Infinity coefficients are undefined in _decimal (in accordance - with the specification). - -- Issue #15925: Fix a regression in `email.util` where the `parsedate()` and - `parsedate_tz()` functions did not return None anymore when the argument could - not be parsed. - -Extension Modules ------------------ - -- Issue #15973: Fix a segmentation fault when comparing datetime timezone - objects. - -- Issue #15977: Fix memory leak in Modules/_ssl.c when the function - _set_npn_protocols() is called multiple times, thanks to Daniel Sommermann. - -- Issue #15969: `faulthandler` module: rename dump_tracebacks_later() to - dump_traceback_later() and cancel_dump_tracebacks_later() to - cancel_dump_traceback_later(). - -- _decimal module: use only C 89 style comments. - - -What's New in Python 3.3.0 Release Candidate 2? -=============================================== - -*Release date: 09-Sep-2012* - -Core and Builtins ------------------ - -- Issue #13992: The trashcan mechanism is now thread-safe. This eliminates - sporadic crashes in multi-thread programs when several long deallocator chains - ran concurrently and involved subclasses of built-in container types. - -- Issue #15784: Modify `OSError`.__str__() to better distinguish between errno - error numbers and Windows error numbers. - -- Issue #15781: Fix two small race conditions in import's module locking. - -Library -------- - -- Issue #17158: Add 'symbols' to help() welcome message; clarify - 'modules spam' messages. - -- Issue #15847: Fix a regression in argparse, which did not accept tuples as - argument lists anymore. - -- Issue #15828: Restore support for C extensions in `imp.load_module()`. - -- Issue #15340: Fix importing the random module when ``/dev/urandom`` cannot be - opened. This was a regression caused by the hash randomization patch. - -- Issue #10650: Deprecate the watchexp parameter of the `Decimal.quantize()` - method. - -- Issue #15785: Modify `window.get_wch()` API of the curses module: return a - character for most keys, and an integer for special keys, instead of always - returning an integer. So it is now possible to distinguish special keys like - keypad keys. - -- Issue #14223: Fix `window.addch()` of the curses module for special characters - like curses.ACS_HLINE: the Python function addch(int) and addch(bytes) is now - calling the C function waddch()/mvwaddch() (as it was done in Python 3.2), - instead of wadd_wch()/mvwadd_wch(). The Python function addch(str) is still - calling the C function wadd_wch()/mvwadd_wch() if the Python curses is linked - to libncursesw. - -Build ------ - -- Issue #15822: Really ensure 2to3 grammar pickles are properly installed - (replaces fixes for Issue #15645). - -Documentation -------------- - -- Issue #15814: The memoryview enhancements in 3.3.0 accidentally permitted the - hashing of multi-dimensional memorviews and memoryviews with multi-byte item - formats. The intended restrictions have now been documented - they will be - correctly enforced in 3.3.1. - - -What's New in Python 3.3.0 Release Candidate 1? -=============================================== - -*Release date: 25-Aug-2012* - -Core and Builtins ------------------ - -- Issue #15573: memoryview comparisons are now performed by value with full - support for any valid struct module format definition. - -- Issue #15316: When an item in the fromlist for `__import__()` doesn't exist, - don't raise an error, but if an exception is raised as part of an import do - let that propagate. - -- Issue #15778: Ensure that ``str(ImportError(msg))`` returns a str even when - msg isn't a str. - -- Issue #2051: Source file permission bits are once again correctly copied to - the cached bytecode file. (The migration to importlib reintroduced this - problem because these was no regression test. A test has been added as part of - this patch) - -- Issue #15761: Fix crash when ``PYTHONEXECUTABLE`` is set on Mac OS X. - -- Issue #15726: Fix incorrect bounds checking in PyState_FindModule. Patch by - Robin Schreiber. - -- Issue #15604: Update uses of `PyObject_IsTrue()` to check for and handle - errors correctly. Patch by Serhiy Storchaka. - -- Issue #14846: `importlib.FileFinder` now handles the case where the directory - being searched is removed after a previous import attempt. - -Library -------- - -- Issue #13370: Ensure that ctypes works on Mac OS X when Python is compiled - using the clang compiler. - -- Issue #13072: The array module's 'u' format code is now deprecated and will be - removed in Python 4.0. - -- Issue #15544: Fix Decimal.__float__ to work with payload-carrying NaNs. - -- Issue #15776: Allow pyvenv to work in existing directory with --clean. - -- Issue #15249: email's BytesGenerator now correctly mangles From lines (when - requested) even if the body contains undecodable bytes. - -- Issue #15777: Fix a refleak in _posixsubprocess. - -- Issue ##665194: Update `email.utils.localtime` to use datetime.astimezone and - correctly handle historic changes in UTC offsets. - -- Issue #15199: Fix JavaScript's default MIME type to application/javascript. - Patch by Bohuslav Kabrda. - -- Issue #12643: `code.InteractiveConsole` now respects `sys.excepthook` when - displaying exceptions. Patch by Aaron Iles. - -- Issue #13579: `string.Formatter` now understands the 'a' conversion specifier. - -- Issue #15595: Fix ``subprocess.Popen(universal_newlines=True)`` for certain - locales (utf-16 and utf-32 family). Patch by Chris Jerdonek. - -- Issue #15477: In cmath and math modules, add workaround for platforms whose - system-supplied log1p function doesn't respect signs of zeros. - -- Issue #15715: `importlib.__import__()` will silence an ImportError when the - use of fromlist leads to a failed import. - -- Issue #14669: Fix pickling of connections and sockets on Mac OS X by - sending/receiving an acknowledgment after file descriptor transfer. - TestPicklingConnection has been reenabled for Mac OS X. - -- Issue #11062: Fix adding a message from file to Babyl mailbox. - -- Issue #15646: Prevent equivalent of a fork bomb when using `multiprocessing` - on Windows without the ``if __name__ == '__main__'`` idiom. - -IDLE ----- - -- Issue #15678: Fix IDLE menus when started from OS X command line (3.3.0b2 - regression). - -Documentation -------------- - -- Touched up the Python 2 to 3 porting guide. - -- Issue #14674: Add a discussion of the `json` module's standard compliance. - Patch by Chris Rebert. - -- Create a 'Concurrent Execution' section in the docs, and split up the - 'Optional Operating System Services' section to use a more user-centric - classification scheme (splitting them across the new CE section, IPC and text - processing). Operating system limitations can be reflected with the Sphinx - ``:platform:`` tag, it doesn't make sense as part of the Table of Contents. - -- Issue #4966: Bring the sequence docs up to date for the Py3k transition and - the many language enhancements since they were original written. - -- The "path importer" misnomer has been replaced with Eric Snow's - more-awkward-but-at-least-not-wrong suggestion of "path based finder" in the - import system reference docs. - -- Issue #15640: Document `importlib.abc.Finder` as deprecated. - -- Issue #15630: Add an example for "continue" stmt in the tutorial. Patch by - Daniel Ellis. - -Tests ------ - -- Issue #15747: ZFS always returns EOPNOTSUPP when attempting to set the - UF_IMMUTABLE flag (via either chflags or lchflags); refactor affected tests in - test_posix.py to account for this. - -- Issue #15285: Refactor the approach for testing connect timeouts using two - external hosts that have been configured specifically for this type of test. - -- Issue #15743: Remove the deprecated method usage in `urllib` tests. Patch by - Jeff Knupp. - -- Issue #15615: Add some tests for the `json` module's handling of invalid input - data. Patch by Kushal Das. - -Build ------ - -- Output lib files for PGO build into PGO directory. - -- Pick up 32-bit launcher from PGO directory on 64-bit PGO build. - -- Drop ``PC\python_nt.h`` as it's not used. Add input dependency on custom - build step. - -- Issue #15511: Drop explicit dependency on pythonxy.lib from _decimal amd64 - configuration. - -- Add missing PGI/PGO configurations for pywlauncher. - -- Issue #15645: Ensure 2to3 grammar pickles are properly installed. - - -What's New in Python 3.3.0 Beta 2? -================================== - -*Release date: 12-Aug-2012* - -Core and Builtins ------------------ - -- Issue #15568: Fix the return value of ``yield from`` when StopIteration is - raised by a custom iterator. - -- Issue #13119: `sys.stdout` and `sys.stderr` are now using "\r\n" newline on - Windows, as Python 2. - -- Issue #15534: Fix the fast-search function for non-ASCII Unicode strings. - -- Issue #15508: Fix the docstring for `__import__()` to have the proper default - value of 0 for 'level' and to not mention negative levels since they are not - supported. - -- Issue #15425: Eliminated traceback noise from more situations involving - importlib. - -- Issue #14578: Support modules registered in the Windows registry again. - -- Issue #15466: Stop using TYPE_INT64 in marshal, to make importlib.h (and other - byte code files) equal between 32-bit and 64-bit systems. - -- Issue #1692335: Move initial exception args assignment to - `BaseException.__new__()` to help pickling of naive subclasses. - -- Issue #12834: Fix `PyBuffer_ToContiguous()` for non-contiguous arrays. - -- Issue #15456: Fix code `__sizeof__()` after #12399 change. Patch by Serhiy - Storchaka. - -- Issue #15404: Refleak in PyMethodObject repr. - -- Issue #15394: An issue in `PyModule_Create()` that caused references to be - leaked on some error paths has been fixed. Patch by Julia Lawall. - -- Issue #15368: An issue that caused bytecode generation to be non-deterministic - has been fixed. - -- Issue #15202: Consistently use the name "follow_symlinks" for new parameters - in os and shutil functions. - -- Issue #15314: ``__main__.__loader__`` is now set correctly during interpreter - startup. - -- Issue #15111: When a module imported using 'from import' has an ImportError - inside itself, don't mask that fact behind a generic ImportError for the - module itself. - -- Issue #15293: Add GC support to the AST base node type. - -- Issue #15291: Fix a memory leak where AST nodes where not properly - deallocated. - -- Issue #15110: Fix the tracebacks generated by "import xxx" to not show the - importlib stack frames. - -- Issue #16369: Global PyTypeObjects not initialized with PyType_Ready(...). - -- Issue #15020: The program name used to search for Python's path is now - "python3" under Unix, not "python". - -- Issue #15897: zipimport.c doesn't check return value of fseek(). - Patch by Felipe Cruz. - -- Issue #15033: Fix the exit status bug when modules invoked using -m switch, - return the proper failure return value (1). Patch contributed by Jeff Knupp. - -- Issue #15229: An `OSError` subclass whose __init__ doesn't call back - OSError.__init__ could produce incomplete instances, leading to crashes when - calling str() on them. - -- Issue #15307: Virtual environments now use symlinks with framework builds on - Mac OS X, like other POSIX builds. - -Library -------- - -- Issue #14590: configparser now correctly strips inline comments when delimiter - occurs earlier without preceding space. - -- Issue #15424: Add a `__sizeof__()` implementation for array objects. Patch by - Ludwig Hähne. - -- Issue #15576: Allow extension modules to act as a package's __init__ module. - -- Issue #15502: Have `importlib.invalidate_caches()` work on `sys.meta_path` - instead of `sys.path_importer_cache`. - -- Issue #15163: Pydoc shouldn't list __loader__ as module data. - -- Issue #15471: Do not use mutable objects as defaults for - `importlib.__import__()`. - -- Issue #15559: To avoid a problematic failure mode when passed to the bytes - constructor, objects in the ipaddress module no longer implement `__index__()` - (they still implement `__int__()` as appropriate). - -- Issue #15546: Fix handling of pathological input data in the peek() and - read1() methods of the BZ2File, GzipFile and LZMAFile classes. - -- Issue #12655: Instead of requiring a custom type, `os.sched_getaffinity()` and - `os.sched_setaffinity()` now use regular sets of integers to represent the - CPUs a process is restricted to. - -- Issue #15538: Fix compilation of the `socket.getnameinfo()` / - `socket.getaddrinfo()` emulation code. Patch by Philipp Hagemeister. - -- Issue #15519: Properly expose WindowsRegistryFinder in importlib (and use the - correct term for it). Original patch by Eric Snow. - -- Issue #15502: Bring the importlib ABCs into line with the current state of the - import protocols given PEP 420. Original patch by Eric Snow. - -- Issue #15499: Launching a webbrowser in Unix used to sleep for a few seconds. - Original patch by Anton Barkovsky. - -- Issue #15463: The faulthandler module truncates strings to 500 characters, - instead of 100, to be able to display long file paths. - -- Issue #6056: Make `multiprocessing` use setblocking(True) on the sockets it - uses. Original patch by J Derek Wilson. - -- Issue #15364: Fix sysconfig.get_config_var('srcdir') to be an absolute path. - -- Issue #15413: `os.times()` had disappeared under Windows. - -- Issue #15402: An issue in the struct module that caused `sys.getsizeof()` to - return incorrect results for struct.Struct instances has been fixed. Initial - patch by Serhiy Storchaka. - -- Issue #15232: When mangle_from is True, `email.Generator` now correctly - mangles lines that start with 'From ' that occur in a MIME preamble or - epilogue. - -- Issue #15094: Incorrectly placed #endif in _tkinter.c. Patch by Serhiy - Storchaka. - -- Issue #13922: `argparse` no longer incorrectly strips '--'s that appear after - the first one. - -- Issue #12353: `argparse` now correctly handles null argument values. - -- Issue #10017, issue #14998: Fix TypeError using pprint on dictionaries with - user-defined types as keys or other unorderable keys. - -- Issue #15397: `inspect.getmodulename()` is now based directly on importlib via - a new `importlib.machinery.all_suffixes()` API. - -- Issue #14635: `telnetlib` will use poll() rather than select() when possible to - avoid failing due to the select() file descriptor limit. - -- Issue #15180: Clarify posixpath.join() error message when mixing str & bytes. - -- Issue #15343: pkgutil now includes an iter_importer_modules implementation for - importlib.machinery.FileFinder (similar to the way it already handled - zipimport.zipimporter). - -- Issue #15314: runpy now sets __main__.__loader__ correctly. - -- Issue #15357: The import emulation in pkgutil is now deprecated. pkgutil uses - importlib internally rather than the emulation. - -- Issue #15233: Python now guarantees that callables registered with the atexit - module will be called in a deterministic order. - -- Issue #15238: `shutil.copystat()` now copies Linux "extended attributes". - -- Issue #15230: runpy.run_path now correctly sets __package__ as described in - the documentation. - -- Issue #15315: Support VS 2010 in distutils cygwincompiler. - -- Issue #15294: Fix a regression in pkgutil.extend_path()'s handling of nested - namespace packages. - -- Issue #15056: `imp.cache_from_source()` and `imp.source_from_cache()` raise - NotImplementedError when `sys.implementation.cache_tag` is set to None. - -- Issue #15256: Grammatical mistake in exception raised by `imp.find_module()`. - -- Issue #5931: `wsgiref` environ variable SERVER_SOFTWARE will specify an - implementation specific term like CPython, Jython instead of generic "Python". - -- Issue #13248: Remove obsolete argument "max_buffer_size" of BufferedWriter and - BufferedRWPair, from the io module. - -- Issue #13248: Remove obsolete argument "version" of `argparse.ArgumentParser`. - -- Issue #14814: Implement more consistent ordering and sorting behaviour for - ipaddress objects. - -- Issue #14814: `ipaddress` network objects correctly return NotImplemented when - compared to arbitrary objects instead of raising TypeError. - -- Issue #14990: Correctly fail with SyntaxError on invalid encoding declaration. - -- Issue #14814: `ipaddress` now provides more informative error messages when - constructing instances directly (changes permitted during beta due to - provisional API status). - -- Issue #15247: `io.FileIO` now raises an error when given a file descriptor - pointing to a directory. - -- Issue #15261: Stop os.stat(fd) crashing on Windows when fd not open. - -- Issue #15166: Implement `imp.get_tag()` using `sys.implementation.cache_tag`. - -- Issue #15210: Catch KeyError when `importlib.__init__()` can't find - _frozen_importlib in sys.modules, not ImportError. - -- Issue #15030: `importlib.abc.PyPycLoader` now supports the new source size - header field in .pyc files. - -- Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox files on - flush(). - -- Issue #10571: Fix the "--sign" option of distutils' upload command. Patch by - Jakub Wilk. - -- Issue #9559: If messages were only added, a new file is no longer created and - renamed over the old file when flush() is called on an mbox, MMDF or Babyl - mailbox. - -- Issue #10924: Fixed `crypt.mksalt()` to use a RNG that is suitable for - cryptographic purpose. - -- Issue #15184: Ensure consistent results of OS X configuration tailoring for - universal builds by factoring out common OS X-specific customizations from - sysconfig, distutils.sysconfig, distutils.util, and distutils.unixccompiler - into a new module _osx_support. - -C API ------ - -- Issue #15610: `PyImport_ImportModuleEx()` now uses a 'level' of 0 instead of -1. - -- Issue #15169, issue #14599: Strip out the C implementation of - `imp.source_from_cache()` used by PyImport_ExecCodeModuleWithPathnames() and - used the Python code instead. Leads to PyImport_ExecCodeModuleObject() to not - try to infer the source path from the bytecode path as - PyImport_ExecCodeModuleWithPathnames() does. - -Extension Modules ------------------ - -- Issue #6493: An issue in ctypes on Windows that caused structure bitfields of - type `ctypes.c_uint32` and width 32 to incorrectly be set has been fixed. - -- Issue #15194: Update libffi to the 3.0.11 release. - -IDLE ----- - -- Issue #13052: Fix IDLE crashing when replace string in Search/Replace dialog - ended with ``\``. Patch by Roger Serwy. - -Tools/Demos ------------ - -- Issue #15458: python-config gets a new option --configdir to print the $LIBPL - value. - -- Move importlib.test.benchmark to Tools/importbench. - -- Issue #12605: The gdb hooks for debugging CPython (within Tools/gdb) have been - enhanced to show information on more C frames relevant to CPython within the - "py-bt" and "py-bt-full" commands: - - * C frames that are waiting on the GIL - * C frames that are garbage-collecting - * C frames that are due to the invocation of a PyCFunction - -Documentation -------------- - -- Issue #15041: Update "see also" list in tkinter documentation. - -- Issue #15444: Use proper spelling for non-ASCII contributor names. Patch by - Serhiy Storchaka. - -- Issue #15295: Reorganize and rewrite the documentation on the import system. - -- Issue #15230: Clearly document some of the limitations of the runpy module and - nudge readers towards importlib when appropriate. - -- Issue #15053: Copy Python 3.3 import lock change notice to all relevant - functions in imp instead of just at the top of the relevant section. - -- Issue #15288: Link to the term "loader" in notes in pkgutil about how things - won't work as expected in Python 3.3 and mark the requisite functions as - "changed" since they will no longer work with modules directly imported by - import itself. - -- Issue #13557: Clarify effect of giving two different namespaces to `exec()` or - `execfile()`. - -- Issue #15250: Document that `filecmp.dircmp()` compares files shallowly. Patch - contributed by Chris Jerdonek. - -- Issue #15442: Expose the default list of directories ignored by - `filecmp.dircmp()` as a module attribute, and expand the list to more modern - values. - -Tests ------ - -- Issue #15467: Move helpers for `__sizeof__()` tests into test_support. Patch - by Serhiy Storchaka. - -- Issue #15320: Make iterating the list of tests thread-safe when running tests - in multiprocess mode. Patch by Chris Jerdonek. - -- Issue #15168: Move `importlib.test` to `test.test_importlib`. - -- Issue #15091: Reactivate a test on UNIX which was failing thanks to a - forgotten `importlib.invalidate_caches()` call. - -- Issue #15230: Adopted a more systematic approach in the runpy tests. - -- Issue #15300: Ensure the temporary test working directories are in the same - parent folder when running tests in multiprocess mode from a Python build. - Patch by Chris Jerdonek. - -- Issue #15284: Skip {send,recv}msg tests in test_socket when IPv6 is not - enabled. Patch by Brian Brazil. - -- Issue #15277: Fix a resource leak in support.py when IPv6 is disabled. Patch - by Brian Brazil. - -Build ------ - -- Issue #11715: Fix multiarch detection without having Debian development tools - (dpkg-dev) installed. - -- Issue #15037: Build OS X installers with local copy of ncurses 5.9 libraries - to avoid curses.unget_wch bug present in older versions of ncurses such as - those shipped with OS X. - -- Issue #15560: Fix building _sqlite3 extension on OS X with an SDK. Also, for - OS X installers, ensure consistent sqlite3 behavior and feature availability - by building a local copy of libsqlite3 rather than depending on the wide range - of versions supplied with various OS X releases. - -- Issue #8847: Disable COMDAT folding in Windows PGO builds. - -- Issue #14018: Fix OS X Tcl/Tk framework checking when using OS X SDKs. - -- Issue #16256: OS X installer now sets correct permissions for doc directory. - -- Issue #15431: Add _freeze_importlib project to regenerate importlib.h on - Windows. Patch by Kristján Valur Jónsson. - -- Issue #14197: For OS X framework builds, ensure links to the shared library - are created with the proper ABI suffix. - -- Issue #14330: For cross builds, don't use host python, use host search paths - for host compiler. - -- Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module. - -- Issue #15268: Search curses.h in /usr/include/ncursesw. - - -What's New in Python 3.3.0 Beta 1? -================================== - -*Release date: 27-Jun-2012* - -Core and Builtins ------------------ - -- Fix a (most likely) very rare memory leak when calling main() and not being - able to decode a command-line argument. - -- Issue #14815: Use Py_ssize_t instead of long for the object hash, to - preserve all 64 bits of hash on Win64. - -- Issue #12268: File readline, readlines and read() or readall() methods - no longer lose data when an underlying read system call is interrupted. - IOError is no longer raised due to a read system call returning EINTR - from within these methods. - -- Issue #11626: Add _SizeT functions to stable ABI. - -- Issue #15142: Fix reference leak when deallocating instances of types - created using PyType_FromSpec(). - -- Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on - the work by Hirokazu Yamamoto. - -- Issue #15096: Removed support for ur'' as the raw notation isn't - compatible with Python 2.x's raw unicode strings. - -- Issue #13783: Generator objects now use the identifier APIs internally - -- Issue #14874: Restore charmap decoding speed to pre-PEP 393 levels. - Patch by Serhiy Storchaka. - -- Issue #15026: utf-16 encoding is now significantly faster (up to 10x). - Patch by Serhiy Storchaka. - -- Issue #11022: open() and io.TextIOWrapper are now calling - locale.getpreferredencoding(False) instead of locale.getpreferredencoding() - in text mode if the encoding is not specified. Don't change temporary the - locale encoding using locale.setlocale(), use the current locale encoding - instead of the user preferred encoding. - -- Issue #14673: Add Eric Snow's sys.implementation implementation. - -- Issue #15038: Optimize python Locks on Windows. - -Library -------- - -- Issue #12288: Consider '0' and '0.0' as valid initialvalue - for tkinter SimpleDialog. - -- Issue #15512: Add a __sizeof__ implementation for parser. - Patch by Serhiy Storchaka. - -- Issue #15469: Add a __sizeof__ implementation for deque objects. - Patch by Serhiy Storchaka. - -- Issue #15489: Add a __sizeof__ implementation for BytesIO objects. - Patch by Serhiy Storchaka. - -- Issue #15487: Add a __sizeof__ implementation for buffered I/O objects. - Patch by Serhiy Storchaka. - -- Issue #15514: Correct __sizeof__ support for cpu_set. - Patch by Serhiy Storchaka. - -- Issue #15177: Added dir_fd parameter to os.fwalk(). - -- Issue #15061: Re-implemented hmac.compare_digest() in C to prevent further - timing analysis and to support all buffer protocol aware objects as well as - ASCII only str instances safely. - -- Issue #15164: Change return value of platform.uname() from a - plain tuple to a collections.namedtuple. - -- Support Mageia Linux in the platform module. - -- Issue #11678: Support Arch linux in the platform module. - -- Issue #15118: Change return value of os.uname() and os.times() from - plain tuples to immutable iterable objects with named attributes - (structseq objects). - -- Speed up _decimal by another 10-15% by caching the thread local context - that was last accessed. In the pi benchmark (64-bit platform, prec=9), - _decimal is now only 1.5x slower than float. - -- Remove the packaging module, which is not ready for prime time. - -- Issue #15154: Add "dir_fd" parameter to os.rmdir, remove "rmdir" - parameter from os.remove / os.unlink. - -- Issue #4489: Add a shutil.rmtree that isn't susceptible to symlink attacks. - It is used automatically on platforms supporting the necessary os.openat() - and os.unlinkat() functions. Main code by Martin von Löwis. - -- Issue #15156: HTMLParser now uses the new "html.entities.html5" dictionary. - -- Issue #11113: add a new "html5" dictionary containing the named character - references defined by the HTML5 standard and the equivalent Unicode - character(s) to the html.entities module. - -- Issue #15114: the strict mode of HTMLParser and the HTMLParseError exception - are deprecated now that the parser is able to parse invalid markup. - -- Issue #3665: \u and \U escapes are now supported in unicode regular - expressions. Patch by Serhiy Storchaka. - -- Issue #15153: Added inspect.getgeneratorlocals to simplify white box - testing of generator state updates - -- Issue #13062: Added inspect.getclosurevars to simplify testing stateful - closures - -- Issue #11024: Fixes and additional tests for Time2Internaldate. - -- Issue #14626: Large refactoring of functions / parameters in the os module. - Many functions now support "dir_fd" and "follow_symlinks" parameters; - some also support accepting an open file descriptor in place of a path - string. Added os.support_* collections as LBYL helpers. Removed many - functions only previously seen in 3.3 alpha releases (often starting with - "f" or "l", or ending with "at"). Originally suggested by Serhiy Storchaka; - implemented by Larry Hastings. - -- Issue #15008: Implement PEP 362 "Signature Objects". - Patch by Yury Selivanov. - -- Issue: #15138: base64.urlsafe_{en,de}code() are now 3-4x faster. - -- Issue #444582: Add shutil.which, for finding programs on the system path. - Original patch by Erik Demaine, with later iterations by Jan Killian - and Brian Curtin. - -- Issue #14837: SSL errors now have ``library`` and ``reason`` attributes - describing precisely what happened and in which OpenSSL submodule. The - str() of a SSLError is also enhanced accordingly. - -- Issue #9527: datetime.astimezone() method will now supply a class - timezone instance corresponding to the system local timezone when - called with no arguments. - -- Issue #14653: email.utils.mktime_tz() no longer relies on system - mktime() when timezone offest is supplied. - -- Issue #14684: zlib.compressobj() and zlib.decompressobj() now support the use - of predefined compression dictionaries. Original patch by Sam Rushing. - -- Fix GzipFile's handling of filenames given as bytes objects. - -- Issue #14772: Return destination values from some shutil functions. - -- Issue #15064: Implement context manager protocol for multiprocessing types - -- Issue #15101: Make pool finalizer avoid joining current thread. - -- Issue #14657: The frozen instance of importlib used for bootstrap is now - also the module imported as importlib._bootstrap. - -- Issue #14055: Add __sizeof__ support to _elementtree. - -- Issue #15054: A bug in tokenize.tokenize that caused string literals - with 'b' prefixes to be incorrectly tokenized has been fixed. - Patch by Serhiy Storchaka. - -- Issue #15006: Allow equality comparison between naive and aware - time or datetime objects. - -- Issue #15036: Mailbox no longer throws an error if a flush is done - between operations when removing or changing multiple items in mbox, - MMDF, or Babyl mailboxes. - -- Issue #14059: Implement multiprocessing.Barrier. - -- Issue #15061: The inappropriately named hmac.secure_compare has been - renamed to hmac.compare_digest, restricted to operating on bytes inputs - only and had its documentation updated to more accurately reflect both its - intent and its limitations - -- Issue #13841: Make child processes exit using sys.exit() on Windows. - -- Issue #14936: curses_panel was converted to PEP 3121 and PEP 384 API. - Patch by Robin Schreiber. - -- Issue #1667546: On platforms supporting tm_zone and tm_gmtoff fields - in struct tm, time.struct_time objects returned by time.gmtime(), - time.localtime() and time.strptime() functions now have tm_zone and - tm_gmtoff attributes. Original patch by Paul Boddie. - -- Rename adjusted attribute to adjustable in time.get_clock_info() result. - -- Issue #3518: Remove references to non-existent BaseManager.from_address() - method. - -- Issue #13857: Added textwrap.indent() function (initial patch by Ezra - Berch) - -- Issue #2736: Added datetime.timestamp() method. - -- Issue #13854: Make multiprocessing properly handle non-integer - non-string argument to SystemExit. - -- Issue #12157: Make pool.map() empty iterables correctly. Initial - patch by mouad. - -- Issue #11823: disassembly now shows argument counts on calls with keyword args. - -- Issue #14711: os.stat_float_times() has been deprecated. - -- LZMAFile now accepts the modes "rb"/"wb"/"ab" as synonyms of "r"/"w"/"a". - -- The bz2 and lzma modules now each contain an open() function, allowing - compressed files to readily be opened in text mode as well as binary mode. - -- BZ2File.__init__() and LZMAFile.__init__() now accept a file object as their - first argument, rather than requiring a separate "fileobj" argument. - -- gzip.open() now accepts file objects as well as filenames. - -- Issue #14992: os.makedirs(path, exist_ok=True) would raise an OSError - when the path existed and had the S_ISGID mode bit set when it was - not explicitly asked for. This is no longer an exception as mkdir - cannot control if the OS sets that bit for it or not. - -- Issue #14989: Make the CGI enable option to http.server available via command - line. - -- Issue #14987: Add a missing import statement to inspect. - -- Issue #1079: email.header.decode_header now correctly parses all the examples - in RFC2047. There is a necessary visible behavior change: the leading and/or - trailing whitespace on ASCII parts is now preserved. - -- Issue #14969: Better handling of exception chaining in contextlib.ExitStack - -- Issue #14963: Convert contextlib.ExitStack.__exit__ to use an iterative - algorithm (Patch by Alon Horev) - -- Issue #14785: Add sys._debugmallocstats() to help debug low-level memory - allocation issues - -- Issue #14443: Ensure that .py files are byte-compiled with the correct Python - executable within bdist_rpm even on older versions of RPM - -C-API ------ - -- Issue #15146: Add PyType_FromSpecWithBases. Patch by Robin Schreiber. - -- Issue #15042: Add PyState_AddModule and PyState_RemoveModule. Add version - guard for Py_LIMITED_API additions. Patch by Robin Schreiber. - -- Issue #13783: Inadvertent additions to the public C API in the PEP 380 - implementation have either been removed or marked as private interfaces. - -Extension Modules ------------------ - -- Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c. - -IDLE ----- - -- Issue #9803: Don't close IDLE on saving if breakpoint is open. - Patch by Roger Serwy. - -- Issue #14962: Update text coloring in IDLE shell window after changing - options. Patch by Roger Serwy. - -Documentation -------------- - -- Issue #15176: Clarified behavior, documentation, and implementation - of os.listdir(). - -- Issue #14982: Document that pkgutil's iteration functions require the - non-standard iter_modules() method to be defined by an importer (something - the importlib importers do not define). - -- Issue #15081: Document PyState_FindModule. - Patch by Robin Schreiber. - -- Issue #14814: Added first draft of ipaddress module API reference - -Tests ------ - -- Issue #15187: Bugfix: remove temporary directories test_shutil was leaving - behind. - -- Issue #14769: test_capi now has SkipitemTest, which cleverly checks - for "parity" between PyArg_ParseTuple() and the Python/getargs.c static - function skipitem() for all possible "format units". - -- test_nntplib now tolerates being run from behind NNTP gateways that add - "X-Antivirus" headers to articles - -- Issue #15043: test_gdb is now skipped entirely if gdb security settings - block loading of the gdb hooks - -- Issue #14963: Add test cases for exception handling behaviour - in contextlib.ExitStack (Initial patch by Alon Horev) - -Build ------ - -- Issue #13590: Improve support for OS X Xcode 4: - * Try to avoid building Python or extension modules with problematic - llvm-gcc compiler. - * Since Xcode 4 removes ppc support, extension module builds now - check for ppc compiler support and automatically remove ppc and - ppc64 archs when not available. - * Since Xcode 4 no longer install SDKs in default locations, - extension module builds now revert to using installed headers - and libs if the SDK used to build the interpreter is not - available. - * Update ./configure to use better defaults for universal builds; - in particular, --enable-universalsdk=yes uses the Xcode default - SDK and --with-universal-archs now defaults to "intel" if ppc - not available. - -- Issue #14225: Fix Unicode support for curses (#12567) on OS X - -- Issue #14928: Fix importlib bootstrap issues by using a custom executable - (Modules/_freeze_importlib) to build Python/importlib.h. - - -What's New in Python 3.3.0 Alpha 4? -=================================== - -*Release date: 31-May-2012* - -Core and Builtins ------------------ - -- Issue #14835: Make plistlib output empty arrays & dicts like OS X. - Patch by Sidney San Martín. - -- Issue #14744: Use the new _PyUnicodeWriter internal API to speed up - str%args and str.format(args). - -- Issue #14930: Make memoryview objects weakrefable. - -- Issue #14775: Fix a potential quadratic dict build-up due to the garbage - collector repeatedly trying to untrack dicts. - -- Issue #14857: fix regression in references to PEP 3135 implicit __class__ - closure variable (Reopens issue #12370) - -- Issue #14712 (PEP 405): Virtual environments. Implemented by Vinay Sajip. - -- Issue #14660 (PEP 420): Namespace packages. Implemented by Eric Smith. - -- Issue #14494: Fix __future__.py and its documentation to note that - absolute imports are the default behavior in 3.0 instead of 2.7. - Patch by Sven Marnach. - -- Issue #9260: A finer-grained import lock. Most of the import sequence - now uses per-module locks rather than the global import lock, eliminating - well-known issues with threads and imports. - -- Issue #14624: UTF-16 decoding is now 3x to 4x faster on various inputs. - Patch by Serhiy Storchaka. - -- asdl_seq and asdl_int_seq are now Py_ssize_t sized. - -- Issue #14133 (PEP 415): Implement suppression of __context__ display with an - attribute on BaseException. This replaces the original mechanism of PEP 409. - -- Issue #14417: Mutating a dict during lookup now restarts the lookup instead - of raising a RuntimeError (undoes issue #14205). - -- Issue #14738: Speed-up UTF-8 decoding on non-ASCII data. Patch by Serhiy - Storchaka. - -- Issue #14700: Fix two broken and undefined-behaviour-inducing overflow checks - in old-style string formatting. - -Library -------- - -- Issue #14690: Use monotonic clock instead of system clock in the sched, - subprocess and trace modules. - -- Issue #14443: Tell rpmbuild to use the correct version of Python in - bdist_rpm. Initial patch by Ross Lagerwall. - -- Issue #12515: email now registers a defect if it gets to EOF while parsing - a MIME part without seeing the closing MIME boundary. - -- Issue #1672568: email now always decodes base64 payloads, adding padding and - ignoring non-base64-alphabet characters if needed, and registering defects - for any such problems. - -- Issue #14925: email now registers a defect when the parser decides that there - is a missing header/body separator line. MalformedHeaderDefect, which the - existing code would never actually generate, is deprecated. - -- Issue #10365: File open dialog now works instead of crashing even when - the parent window is closed before the dialog. Patch by Roger Serwy. - -- Issue #8739: Updated smtpd to support RFC 5321, and added support for the - RFC 1870 SIZE extension. - -- Issue #665194: Added a localtime function to email.utils to provide an - aware local datetime for use in setting Date headers. - -- Issue #12586: Added new provisional policies that implement convenient - unicode support for email headers. See What's New for details. - -- Issue #14731: Refactored email Policy framework to support full backward - compatibility with Python 3.2 by default yet allow for the introduction of - new features through new policies. Note that Policy.must_be_7bit is renamed - to cte_type. - -- Issue #14876: Use user-selected font for highlight configuration. - -- Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals. - Have ascii characters in help. - -- Issue #14548: Make multiprocessing finalizers check pid before - running to cope with possibility of gc running just after fork. - -- Issue #14036: Add an additional check to validate that port in urlparse does - not go in illegal range and returns None. - -- Issue #14862: Add missing names to os.__all__ - -- Issue #14875: Use float('inf') instead of float('1e66666') in the json module. - -- Issue #13585: Added contextlib.ExitStack - -- PEP 3144, Issue #14814: Added the ipaddress module - -- Issue #14426: Correct the Date format in Expires attribute of Set-Cookie - Header in Cookie.py. - -- Issue #14588: The types module now provide new_class() and prepare_class() - functions to support PEP 3115 compliant dynamic class creation. Patch by - Daniel Urban and Nick Coghlan. - -- Issue #13152: Allow to specify a custom tabsize for expanding tabs in - textwrap. Patch by John Feuerstein. - -- Issue #14721: Send the correct 'Content-length: 0' header when the body is an - empty string ''. Initial Patch contributed by Arve Knudsen. - -- Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for - ports stricter. - -- Issue #9374: Generic parsing of query and fragment portions of url for any - scheme. Supported both by RFC3986 and RFC2396. - -- Issue #14798: Fix the functions in pyclbr to raise an ImportError - when the first part of a dotted name is not a package. Patch by - Xavier de Gaye. - -- Issue #12098: multiprocessing on Windows now starts child processes - using the same sys.flags as the current process. Initial patch by - Sergey Mezentsev. - -- Issue #13031: Small speed-up for tarfile when unzipping tarfiles. - Patch by Justin Peel. - -- Issue #14780: urllib.request.urlopen() now has a ``cadefault`` argument - to use the default certificate store. Initial patch by James Oakley. - -- Issue #14829: Fix bisect and range() indexing with large indices - (>= 2 ** 32) under 64-bit Windows. - -- Issue #14732: The _csv module now uses PEP 3121 module initialization. - Patch by Robin Schreiber. - -- Issue #14809: Add HTTP status codes introduced by RFC 6585 to http.server - and http.client. Patch by EungJun Yi. - -- Issue #14777: tkinter may return undecoded UTF-8 bytes as a string when - accessing the Tk clipboard. Modify clipboad_get() to first request type - UTF8_STRING when no specific type is requested in an X11 windowing - environment, falling back to the current default type STRING if that fails. - Original patch by Thomas Kluyver. - -- Issue #14773: Fix os.fwalk() failing on dangling symlinks. - -- Issue #12541: Be lenient with quotes around Realm field of HTTP Basic - Authentation in urllib2. - -- Issue #14807: move undocumented tarfile.filemode() to stat.filemode() and add - doc entry. Add tarfile.filemode alias with deprecation warning. - -- Issue #13815: TarFile.extractfile() now returns io.BufferedReader objects. - -- Issue #14532: Add a secure_compare() helper to the hmac module, to mitigate - timing attacks. Patch by Jon Oberheide. - -- Add importlib.util.resolve_name(). - -- Issue #14366: Support lzma compression in zip files. - Patch by Serhiy Storchaka. - -- Issue #13959: Introduce importlib.find_loader() and document - imp.find_module/load_module as deprecated. - -- Issue #14082: shutil.copy2() now copies extended attributes, if possible. - Patch by Hynek Schlawack. - -- Issue #13959: Make importlib.abc.FileLoader.load_module()/get_filename() and - importlib.machinery.ExtensionFileLoader.load_module() have their single - argument be optional. Allows for the replacement (and thus deprecation) of - imp.load_source()/load_package()/load_compiled(). - -- Issue #13959: imp.get_suffixes() has been deprecated in favour of the new - attributes on importlib.machinery: SOURCE_SUFFIXES, DEBUG_BYTECODE_SUFFIXES, - OPTIMIZED_BYTECODE_SUFFIXES, BYTECODE_SUFFIXES, and EXTENSION_SUFFIXES. This - led to an indirect deprecation of inspect.getmoduleinfo(). - -- Issue #14662: Prevent shutil failures on OS X when destination does not - support chflag operations. Patch by Hynek Schlawack. - -- Issue #14157: Fix time.strptime failing without a year on February 29th. - Patch by Hynek Schlawack. - -- Issue #14753: Make multiprocessing's handling of negative timeouts - the same as it was in Python 3.2. - -- Issue #14583: Fix importlib bug when a package's __init__.py would first - import one of its modules then raise an error. - -- Issue #14741: Fix missing support for Ellipsis ('...') in parser module. - -- Issue #14697: Fix missing support for set displays and set comprehensions in - parser module. - -- Issue #14701: Fix missing support for 'raise ... from' in parser module. - -- Add support for timeouts to the acquire() methods of - multiprocessing's lock/semaphore/condition proxies. - -- Issue #13989: Add support for text mode to gzip.open(). - -- Issue #14127: The os.stat() result object now provides three additional - fields: st_ctime_ns, st_mtime_ns, and st_atime_ns, providing those times as an - integer with nanosecond resolution. The functions os.utime(), os.lutimes(), - and os.futimes() now accept a new parameter, ns, which accepts mtime and atime - as integers with nanosecond resolution. - -- Issue #14127 and #10148: shutil.copystat now preserves exact mtime and atime - on filesystems providing nanosecond resolution. - -IDLE ----- - -- Issue #14958: Change IDLE systax highlighting to recognize all string and - byte literals supported in Python 3.3. - -- Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu. - -- Issue #14929: Stop IDLE 3.x from closing on Unicode decode errors when - grepping. Patch by Roger Serwy. - -- Issue #12510: Attempting to get invalid tooltip no longer closes IDLE. - Other tooltipss have been corrected or improved and the number of tests - has been tripled. Original patch by Roger Serwy. - -Tools/Demos ------------ - -- Issue #14695: Bring Tools/parser/unparse.py support up to date with - the Python 3.3 Grammar. - -Build ------ - -- Issue #14472: Update .gitignore. Patch by Matej Cepl. - -- Upgrade Windows library versions: bzip 1.0.6, OpenSSL 1.0.1c. - -- Issue #14693: Under non-Windows platforms, hashlib's fallback modules are - always compiled, even if OpenSSL is present at build time. - -- Issue #13210: Windows build now uses VS2010, ported from VS2008. - -C-API ------ - -- Issue #14705: The PyArg_Parse() family of functions now support the 'p' format - unit, which accepts a "boolean predicate" argument. It converts any Python - value into an integer--0 if it is "false", and 1 otherwise. - -Documentation -------------- - -- Issue #14863: Update the documentation of os.fdopen() to reflect the - fact that it's only a thin wrapper around open() anymore. - -- Issue #14588: The language reference now accurately documents the Python 3 - class definition process. Patch by Nick Coghlan. - -- Issue #14943: Correct a default argument value for winreg.OpenKey - and correctly list the argument names in the function's explanation. - - -What's New in Python 3.3.0 Alpha 3? -=================================== - -*Release date: 01-May-2012* - -Core and Builtins ------------------ - -- Issue #14699: Fix calling the classmethod descriptor directly. - -- Issue #14433: Prevent msvcrt crash in interactive prompt when stdin is closed. - -- Issue #14521: Make result of float('nan') and float('-nan') more consistent - across platforms. - -- Issue #14646: __import__() sets __loader__ if the loader did not. - -- Issue #14605: No longer have implicit entries in sys.meta_path. If - sys.meta_path is found to be empty, raise ImportWarning. - -- Issue #14605: No longer have implicit entries in sys.path_hooks. If - sys.path_hooks is found to be empty, a warning will be raised. None is now - inserted into sys.path_importer_cache if no finder was discovered. This also - means imp.NullImporter is no longer implicitly used. - -- Issue #13903: Implement PEP 412. Individual dictionary instances can now share - their keys with other dictionaries. Classes take advantage of this to share - their instance dictionary keys for improved memory and performance. - -- Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError - when repr() or str() is called on such an object. - -- Issue #14658: Fix binding a special method to a builtin implementation of a - special method with a different name. - -- Issue #14630: Fix a memory access bug for instances of a subclass of int - with value 0. - -- Issue #14339: Speed improvements to bin, oct and hex functions. Patch by - Serhiy Storchaka. - -- Issue #14385: It is now possible to use a custom type for the __builtins__ - namespace, instead of a dict. It can be used for sandboxing for example. - Raise also a NameError instead of ImportError if __build_class__ name if not - found in __builtins__. - -- Issue #12599: Be more strict in accepting None compared to a false-like - object for importlib.util.module_for_loader and - importlib.machinery.PathFinder. - -- Issue #14612: Fix jumping around with blocks by setting f_lineno. - -- Issue #14592: Attempting a relative import w/o __package__ or __name__ set in - globals raises a KeyError. - -- Issue #14607: Fix keyword-only arguments which started with ``__``. - -- Issue #10854: The ImportError raised when an extension module on Windows - fails to import now uses the new path and name attributes from - Issue #1559549. - -- Issue #13889: Check and (if necessary) set FPU control word before calling - any of the dtoa.c string <-> float conversion functions, on MSVC builds of - Python. This fixes issues when embedding Python in a Delphi app. - -- __import__() now matches PEP 328 and documentation by defaulting 'index' to 0 - instead of -1 and removing support for negative values. - -- Issue #2377: Make importlib the implementation of __import__(). - -- Issue #1559549: ImportError now has 'name' and 'path' attributes that are set - using keyword arguments to its constructor. They are currently not set by - import as they are meant for use by importlib. - -- Issue #14474: Save and restore exception state in thread.start_new_thread() - while writing error message if the thread leaves a unhandled exception. - -- Issue #13019: Fix potential reference leaks in bytearray.extend(). Patch - by Suman Saha. - -Library -------- - -- Issue #14768: os.path.expanduser('~/a') doesn't works correctly when HOME is '/'. - -- Issue #14371: Support bzip2 in zipfile module. Patch by Serhiy Storchaka. - -- Issue #13183: Fix pdb skipping frames after hitting a breakpoint and running - step. Patch by Xavier de Gaye. - -- Issue #14696: Fix parser module to understand 'nonlocal' declarations. - -- Issue #10941: Fix imaplib.Internaldate2tuple to produce correct result near - the DST transition. Patch by Joe Peterson. - -- Issue #9154: Fix parser module to understand function annotations. - -- Issue #6085: In http.server.py SimpleHTTPServer.address_string returns the - client ip address instead client hostname. Patch by Charles-François Natali. - -- Issue #14309: Deprecate time.clock(), use time.perf_counter() or - time.process_time() instead. - -- Issue #14428: Implement the PEP 418. Add time.get_clock_info(), - time.perf_counter() and time.process_time() functions, and rename - time.steady() to time.monotonic(). - -- Issue #14646: importlib.util.module_for_loader() now sets __loader__ and - __package__ (when possible). - -- Issue #14664: It is now possible to use @unittest.skip{If,Unless} on a - test class that doesn't inherit from TestCase (i.e. a mixin). - -- Issue #4892: multiprocessing Connections can now be transferred over - multiprocessing Connections. Patch by Richard Oudkerk (sbt). - -- Issue #14160: TarFile.extractfile() failed to resolve symbolic links when - the links were not located in an archive subdirectory. - -- Issue #14638: pydoc now treats non-string __name__ values as if they - were missing, instead of raising an error. - -- Issue #13684: Fix httplib tunnel issue of infinite loops for certain sites - which send EOF without trailing \r\n. - -- Issue #14605: Add importlib.abc.FileLoader, importlib.machinery.(FileFinder, - SourceFileLoader, SourcelessFileLoader, ExtensionFileLoader). - -- Issue #13959: imp.cache_from_source()/source_from_cache() now follow - os.path.join()/split() semantics for path manipulation instead of its prior, - custom semantics of caring the right-most path separator forward in path - joining. - -- Issue #2193: Allow ":" character in Cookie NAME values. - -- Issue #14629: tokenizer.detect_encoding will specify the filename in the - SyntaxError exception if found at readline.__self__.name. - -- Issue #14629: Raise SyntaxError in tokenizer.detect_encoding if the - first two lines have non-UTF-8 characters without an encoding declaration. - -- Issue #14308: Fix an exception when a "dummy" thread is in the threading - module's active list after a fork(). - -- Issue #11750: The Windows API functions scattered in the _subprocess and - _multiprocessing.win32 modules now live in a single module "_winapi". - Patch by sbt. - -- Issue #14087: multiprocessing: add Condition.wait_for(). Patch by sbt. - -- Issue #14538: HTMLParser can now parse correctly start tags that contain - a bare '/'. - -- Issue #14452: SysLogHandler no longer inserts a UTF-8 BOM into the message. - -- Issue #14386: Expose the dict_proxy internal type as types.MappingProxyType. - -- Issue #13959: Make imp.reload() always use a module's __loader__ to perform - the reload. - -- Issue #13959: Add imp.py and rename the built-in module to _imp, allowing for - re-implementing parts of the module in pure Python. - -- Issue #13496: Fix potential overflow in bisect.bisect algorithm when applied - to a collection of size > sys.maxsize / 2. - -- Have importlib take advantage of ImportError's new 'name' and 'path' - attributes. - -- Issue #14399: zipfile now recognizes that the archive has been modified even - if only the comment is changed. In addition, the TypeError that results from - trying to set a non-binary value as a comment is now raised at the time - the comment is set rather than at the time the zipfile is written. - -- trace.CoverageResults.is_ignored_filename() now ignores any name that starts - with "<" and ends with ">" instead of special-casing "<string>" and - "<doctest ". - -- Issue #12537: The mailbox module no longer depends on knowledge of internal - implementation details of the email package Message object. - -- Issue #7978: socketserver now restarts the select() call when EINTR is - returned. This avoids crashing the server loop when a signal is received. - Patch by Jerzy Kozera. - -- Issue #14522: Avoid duplicating socket handles in multiprocessing.connection. - Patch by sbt. - -- Don't Py_DECREF NULL variable in io.IncrementalNewlineDecoder. - -- Issue #3033: Add displayof parameter to tkinter font. Patch by Guilherme Polo. - -- Issue #14482: Raise a ValueError, not a NameError, when trying to create - a multiprocessing Client or Listener with an AF_UNIX type address under - Windows. Patch by Popa Claudiu. - -- Issue #802310: Generate always unique tkinter font names if not directly passed. - -- Issue #14151: Raise a ValueError, not a NameError, when trying to create - a multiprocessing Client or Listener with an AF_PIPE type address under - non-Windows platforms. Patch by Popa Claudiu. - -- Issue #14493: Use gvfs-open or xdg-open in webbrowser. - -Build ------ - -- "make touch" will now touch generated files that are checked into Mercurial, - after a "hg update" which failed to bring the timestamps into the right order. - -Tests ------ - -- Issue #14026: In test_cmd_line_script, check that sys.argv is populated - correctly for the various invocation approaches (Patch by Jason Yeo) - -- Issue #14032: Fix incorrect variable name in test_cmd_line_script debugging - message (Patch by Jason Yeo) - -- Issue #14589: Update certificate chain for sha256.tbs-internet.com, fixing - a test failure in test_ssl. - -- Issue #14355: Regrtest now supports the standard unittest test loading, and - will use it if a test file contains no `test_main` method. - -IDLE ----- - -- Issue #8515: Set __file__ when run file in IDLE. - Initial patch by Bruce Frederiksen. - -- Issue #14496: Fix wrong name in idlelib/tabbedpages.py. - Patch by Popa Claudiu. - -Tools / Demos -------------- - -- Issue #3561: The Windows installer now has an option, off by default, for - placing the Python installation into the system "Path" environment variable. - -- Issue #13165: stringbench is now available in the Tools/stringbench folder. - It used to live in its own SVN project. - -C-API ------ - -- Issue #14098: New functions PyErr_GetExcInfo and PyErr_SetExcInfo. - Patch by Stefan Behnel. - - -What's New in Python 3.3.0 Alpha 2? -=================================== - -*Release date: 01-Apr-2012* - -Core and Builtins ------------------ - -- Issue #1683368: object.__new__ and object.__init__ raise a TypeError if they - are passed arguments and their complementary method is not overridden. - -- Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as - the module name that was not interned. - -- Issue #14331: Use significantly less stack space when importing modules by - allocating path buffers on the heap instead of the stack. - -- Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not - passed strings. - -- Issue #1469629: Allow cycles through an object's __dict__ slot to be - collected. (For example if ``x.__dict__ is x``). - -- Issue #14205: dict lookup raises a RuntimeError if the dict is modified - during a lookup. - -- Issue #14220: When a generator is delegating to another iterator with the - yield from syntax, it needs to have its ``gi_running`` flag set to True. - -- Issue #14435: Remove dedicated block allocator from floatobject.c and rely - on the PyObject_Malloc() api like all other objects. - -- Issue #14471: Fix a possible buffer overrun in the winreg module. - -- Issue #14288: Allow the serialization of builtin iterators - -Library -------- - -- Issue #14300: Under Windows, sockets created using socket.dup() now allow - overlapped I/O. Patch by sbt. - -- Issue #13872: socket.detach() now marks the socket closed (as mirrored - in the socket repr()). Patch by Matt Joiner. - -- Issue #14406: Fix a race condition when using ``concurrent.futures.wait( - return_when=ALL_COMPLETED)``. Patch by Matt Joiner. - -- Issue #5136: deprecate old, unused functions from tkinter. - -- Issue #14416: syslog now defines the LOG_ODELAY and LOG_AUTHPRIV constants - if they are defined in <syslog.h>. - -- Issue #14295: Add unittest.mock - -- Issue #7652: Add --with-system-libmpdec option to configure for linking - the _decimal module against an installed libmpdec. - -- Issue #14380: MIMEText now defaults to utf-8 when passed non-ASCII unicode - with no charset specified. - -- Issue #10340: asyncore - properly handle EINVAL in dispatcher constructor on - OSX; avoid to call handle_connect in case of a disconnected socket which - was not meant to connect. - -- Issue #14204: The ssl module now has support for the Next Protocol - Negotiation extension, if available in the underlying OpenSSL library. - Patch by Colin Marc. - -- Issue #3035: Unused functions from tkinter are marked as pending deprecated. - -- Issue #12757: Fix the skipping of doctests when python is run with -OO so - that it works in unittest's verbose mode as well as non-verbose mode. - -- Issue #7652: Integrate the decimal floating point libmpdec library to speed - up the decimal module. Performance gains of the new C implementation are - between 10x and 100x, depending on the application. - -- Issue #14269: SMTPD now conforms to the RFC and requires a HELO command - before MAIL, RCPT, or DATA. - -- Issue #13694: asynchronous connect in asyncore.dispatcher does not set addr - attribute. - -- Issue #14344: fixed the repr of email.policy objects. - -- Issue #11686: Added missing entries to email package __all__ lists - (mostly the new Bytes classes). - -- Issue #14335: multiprocessing's custom Pickler subclass now inherits from - the C-accelerated implementation. Patch by sbt. - -- Issue #10484: Fix the CGIHTTPServer's PATH_INFO handling problem. - -- Issue #11199: Fix the with urllib which hangs on particular ftp urls. - -- Improve the memory utilization and speed of functools.lru_cache. - -- Issue #14222: Use the new time.steady() function instead of time.time() for - timeout in queue and threading modules to not be affected of system time - update. - -- Issue #13248: Remove lib2to3.pytree.Base.get_prefix/set_prefix. - -- Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash - table internal to the pyexpat module's copy of the expat library to avoid a - denial of service due to hash collisions. Patch by David Malcolm with some - modifications by the expat project. - -- Issue #12818: format address no longer needlessly \ escapes ()s in names when - the name ends up being quoted. - -- Issue #14062: BytesGenerator now correctly folds Header objects, - including using linesep when folding. - -- Issue #13839: When invoked on the command-line, the pstats module now - accepts several filenames of profile stat files and merges them all. - Patch by Matt Joiner. - -- Issue #14291: Email now defaults to utf-8 for non-ASCII unicode headers - instead of raising an error. This fixes a regression relative to 2.7. - -- Issue #989712: Support using Tk without a mainloop. - -- Issue #3835: Refuse to use unthreaded Tcl in threaded Python. - -- Issue #2843: Add new Tk API to Tkinter. - -- Issue #14184: Increase the default stack size for secondary threads on - Mac OS X to avoid interpreter crashes when using threads on 10.7. - -- Issue #14180: datetime.date.fromtimestamp(), - datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp() - now raise an OSError instead of ValueError if localtime() or gmtime() failed. - -- Issue #14180: time.ctime(), gmtime(), time.localtime(), - datetime.date.fromtimestamp(), datetime.datetime.fromtimestamp() and - datetime.datetime.utcfromtimestamp() now raises an OverflowError, instead of - a ValueError, if the timestamp does not fit in time_t. - -- Issue #14180: datetime.datetime.fromtimestamp() and - datetime.datetime.utcfromtimestamp() now round microseconds towards zero - instead of rounding to nearest with ties going away from zero. - -- Issue #10543: Fix unittest test discovery with Jython bytecode files. - -- Issue #1178863: Separate initialisation from setting when initializing - Tkinter.Variables; harmonize exceptions to ValueError; only delete variables - that have not been deleted; assert that variable names are strings. - -- Issue #14104: Implement time.monotonic() on Mac OS X, patch written by - Nicholas Riley. - -- Issue #13394: the aifc module now uses warnings.warn() to signal warnings. - -- Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under - Windows when the child process has already exited. - -- Issue #14223: curses.addch() is no more limited to the range 0-255 when the - Python curses is not linked to libncursesw. It was a regression introduced - in Python 3.3a1. - -- Issue #14168: Check for presence of Element._attrs in minidom before - accessing it. - -- Issue #12328: Fix multiprocessing's use of overlapped I/O on Windows. - Also, add a multiprocessing.connection.wait(rlist, timeout=None) function - for polling multiple objects at once. Patch by sbt. - -- Issue #14007: Accept incomplete TreeBuilder objects (missing start, end, - data or close method) for the Python implementation as well. - Drop the no-op TreeBuilder().xml() method from the C implementation. - -- Issue #14210: pdb now has tab-completion not only for command names, but - also for their arguments, wherever possible. - -- Issue #14310: Sockets can now be with other processes on Windows using - the api socket.socket.share() and socket.fromshare(). - -- Issue #10576: The gc module now has a 'callbacks' member that will get - called when garbage collection takes place. - -Build ------ - -- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban. - -- Issue #14387: Do not include accu.h from Python.h. - -- Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined. - Based on patch from Hervé Coatanhay. - -- Issue #14321: Do not run pgen during the build if files are up to date. - -Documentation -------------- - -- Issue #14034: added the argparse tutorial. - -- Issue #14324: Fix configure tests for cross builds. - -- Issue #14327: Call AC_CANONICAL_HOST in configure.ac and check in - config.{guess,sub}. Don't use uname calls for cross builds. - -Extension Modules ------------------ - -- Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and - ctypes.c_float that caused an incorrect exception to be returned in the - case of overflow has been fixed. - -- Issue #14212: The re module didn't retain a reference to buffers it was - scanning, resulting in segfaults. - -- Issue #14259: The finditer() method of re objects did not take any - keyword arguments, contrary to the documentation. - -- Issue #10142: Support for SEEK_HOLE/SEEK_DATA (for example, under ZFS). - -Tests ------ - -- Issue #14442: Add missing errno import in test_smtplib. - -- Issue #8315: (partial fix) python -m unittest test.test_email now works. - - -What's New in Python 3.3.0 Alpha 1? -=================================== - -*Release date: 05-Mar-2012* - -Core and Builtins ------------------ - -- Issue #14172: Fix reference leak when marshalling a buffer-like object - (other than a bytes object). - -- Issue #13521: dict.setdefault() now does only one lookup for the given key, - making it "atomic" for many purposes. Patch by Filip Gruszczyński. - -- PEP 409, Issue #6210: "raise X from None" is now supported as a means of - suppressing the display of the chained exception context. The chained - context still remains available as the __context__ attribute. - -- Issue #10181: New memoryview implementation fixes multiple ownership - and lifetime issues of dynamically allocated Py_buffer members (#9990) - as well as crashes (#8305, #7433). Many new features have been added - (See whatsnew/3.3), and the documentation has been updated extensively. - The ndarray test object from _testbuffer.c implements all aspects of - PEP-3118, so further development towards the complete implementation - of the PEP can proceed in a test-driven manner. - - Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review - and many ideas. - -- Issue #12834: Fix incorrect results of memoryview.tobytes() for - non-contiguous arrays. - -- Issue #5231: Introduce memoryview.cast() method that allows changing - format and shape without making a copy of the underlying memory. - -- Issue #14084: Fix a file descriptor leak when importing a module with a - bad encoding. - -- Upgrade Unicode data to Unicode 6.1. - -- Issue #14040: Remove rarely used file name suffixes for C extensions - (under POSIX mainly). - -- Issue #14051: Allow arbitrary attributes to be set of classmethod and - staticmethod. - -- Issue #13703: oCERT-2011-003: Randomize hashes of str and bytes to protect - against denial of service attacks due to hash collisions within the dict and - set types. Patch by David Malcolm, based on work by Victor Stinner. - -- Issue #13020: Fix a reference leak when allocating a structsequence object - fails. Patch by Suman Saha. - -- Issue #13908: Ready types returned from PyType_FromSpec. - -- Issue #11235: Fix OverflowError when trying to import a source file whose - modification time doesn't fit in a 32-bit timestamp. - -- Issue #12705: A SyntaxError exception is now raised when attempting to - compile multiple statements as a single interactive statement. - -- Fix the builtin module initialization code to store the init function for - future reinitialization. - -- Issue #8052: The posix subprocess module would take a long time closing - all possible file descriptors in the child process rather than just open - file descriptors. It now closes only the open fds if possible for the - default close_fds=True behavior. - -- Issue #13629: Renumber the tokens in token.h so that they match the indexes - into _PyParser_TokenNames. - -- Issue #13752: Add a casefold() method to str. - -- Issue #13761: Add a "flush" keyword argument to the print() function, - used to ensure flushing the output stream. - -- Issue #13645: pyc files now contain the size of the corresponding source - code, to avoid timestamp collisions (especially on filesystems with a low - timestamp resolution) when checking for freshness of the bytecode. - -- PEP 380, Issue #11682: Add "yield from <x>" to support easy delegation to - subgenerators (initial patch by Greg Ewing, integration into 3.3 by - Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan) - -- Issue #13748: Raw bytes literals can now be written with the ``rb`` prefix - as well as ``br``. - -- Issue #12736: Use full unicode case mappings for upper, lower, and title case. - -- Issue #12760: Add a create mode to open(). Patch by David Townshend. - -- Issue #13738: Simplify implementation of bytes.lower() and bytes.upper(). - -- Issue #13577: Built-in methods and functions now have a __qualname__. - Patch by sbt. - -- Issue #6695: Full garbage collection runs now clear the freelist of set - objects. Initial patch by Matthias Troffaes. - -- Fix OSError.__init__ and OSError.__new__ so that each of them can be - overriden and take additional arguments (followup to issue #12555). - -- Fix the fix for issue #12149: it was incorrect, although it had the side - effect of appearing to resolve the issue. Thanks to Mark Shannon for - noticing. - -- Issue #13505: Pickle bytes objects in a way that is compatible with - Python 2 when using protocols <= 2. - -- Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER. (Fix - given by Campbell Barton). - -- Issue #13503: Use a more efficient reduction format for bytearrays with - pickle protocol >= 3. The old reduction format is kept with older protocols - in order to allow unpickling under Python 2. Patch by Irmen de Jong. - -- Issue #7111: Python can now be run without a stdin, stdout or stderr - stream. It was already the case with Python 2. However, the corresponding - sys module entries are now set to None (instead of an unusable file object). - -- Issue #11849: Ensure that free()d memory arenas are really released - on POSIX systems supporting anonymous memory mappings. Patch by - Charles-François Natali. - -- PEP 3155 / issue #13448: Qualified name for classes and functions. - -- Issue #13436: Fix a bogus error message when an AST object was passed - an invalid integer value. - -- Issue #13411: memoryview objects are now hashable when the underlying - object is hashable. - -- Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER - to allow compiling extension modules with -Wswitch-enum on gcc. - Initial patch by Floris Bruynooghe. - -- Issue #10227: Add an allocation cache for a single slice object. Patch by - Stefan Behnel. - -- Issue #13393: BufferedReader.read1() now asks the full requested size to - the raw stream instead of limiting itself to the buffer size. - -- Issue #13392: Writing a pyc file should now be atomic under Windows as well. - -- Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder - already accepts them). - -- Issue #13389: Full garbage collection passes now clear the freelists for - list and dict objects. They already cleared other freelists in the - interpreter. - -- Issue #13327: Remove the need for an explicit None as the second argument - to os.utime, os.lutimes, os.futimes, os.futimens, os.futimesat, in - order to update to the current time. Also added keyword argument - handling to os.utimensat in order to remove the need for explicit None. - -- Issue #13350: Simplify some C code by replacing most usages of - PyUnicode_Format by PyUnicode_FromFormat. - -- Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode - error handler in interactive mode (when calling into PyOS_Readline()). - -- Issue #9896: Add start, stop, and step attributes to range objects. - -- Issue #13343: Fix a SystemError when a lambda expression uses a global - variable in the default value of a keyword-only argument: ``lambda *, - arg=GLOBAL_NAME: None`` - -- Issue #12797: Added custom opener parameter to builtin open() and - FileIO.open(). - -- Issue #10519: Avoid unnecessary recursive function calls in - setobject.c. - -- Issue #10363: Deallocate global locks in Py_Finalize(). - -- Issue #13018: Fix reference leaks in error paths in dictobject.c. - Patch by Suman Saha. - -- Issue #13201: Define '==' and '!=' to compare range objects based on - the sequence of values they define (instead of comparing based on - object identity). - -- Issue #1294232: In a few cases involving metaclass inheritance, the - interpreter would sometimes invoke the wrong metaclass when building a new - class object. These cases now behave correctly. Patch by Daniel Urban. - -- Issue #12753: Add support for Unicode name aliases and named sequences. - Both ``unicodedata.lookup()`` and '\N{...}' now resolve aliases, - and ``unicodedata.lookup()`` resolves named sequences too. - -- Issue #12170: The count(), find(), rfind(), index() and rindex() methods - of bytes and bytearray objects now accept an integer between 0 and 255 - as their first argument. Patch by Petri Lehtinen. - -- Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler - warnings. Patch by Josh Triplett and Petri Lehtinen. - -- Issue #12281: Rewrite the MBCS codec to handle correctly replace and ignore - error handlers on all Windows versions. The MBCS codec is now supporting all - error handlers, instead of only replace to encode and ignore to decode. - -- Issue #13188: When called without an explicit traceback argument, - generator.throw() now gets the traceback from the passed exception's - ``__traceback__`` attribute. Patch by Petri Lehtinen. - -- Issue #13146: Writing a pyc file is now atomic under POSIX. - -- Issue #7833: Extension modules built using distutils on Windows will no - longer include a "manifest" to prevent them failing at import time in some - embedded situations. - -- PEP 3151 / issue #12555: reworking the OS and IO exception hierarchy. - -- Add internal API for static strings (_Py_identifier et al.). - -- Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described - as "The pipe is being closed") is now mapped to POSIX errno EPIPE - (previously EINVAL). - -- Issue #12911: Fix memory consumption when calculating the repr() of huge - tuples or lists. - -- PEP 393: flexible string representation. Thanks to Torsten Becker for the - initial implementation, and Victor Stinner for various bug fixes. - -- Issue #14081: The 'sep' and 'maxsplit' parameter to str.split, bytes.split, - and bytearray.split may now be passed as keyword arguments. - -- Issue #13012: The 'keepends' parameter to str.splitlines may now be passed - as a keyword argument: "my_string.splitlines(keepends=True)". The same - change also applies to bytes.splitlines and bytearray.splitlines. - -- Issue #7732: Don't open a directory as a file anymore while importing a - module. Ignore the direcotry if its name matchs the module name (e.g. - "__init__.py") and raise a ImportError instead. - -- Issue #13021: Missing decref on an error path. Thanks to Suman Saha for - finding the bug and providing a patch. - -- Issue #12973: Fix overflow checks that relied on undefined behaviour in - list_repeat (listobject.c) and islice_next (itertoolsmodule.c). These bugs - caused test failures with recent versions of Clang. - -- Issue #12904: os.utime, os.futimes, os.lutimes, and os.futimesat now write - atime and mtime with nanosecond precision on modern POSIX platforms. - -- Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now - mapped to POSIX errno ENOTDIR (previously EINVAL). - -- Issue #9200: The str.is* methods now work with strings that contain non-BMP - characters even in narrow Unicode builds. - -- Issue #12791: Break reference cycles early when a generator exits with - an exception. - -- Issue #12773: Make __doc__ mutable on user-defined classes. - -- Issue #12766: Raise a ValueError when creating a class with a class variable - that conflicts with a name in __slots__. - -- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase - titlecased and cased non-letter characters. - -- Issue #12732: In narrow unicode builds, allow Unicode identifiers which fall - outside the BMP. - -- Issue #12575: Validate user-generated AST before it is compiled. - -- Make type(None), type(Ellipsis), and type(NotImplemented) callable. They - return the respective singleton instances. - -- Forbid summing bytes with sum(). - -- Verify the types of AST strings and identifiers provided by the user before - compiling them. - -- Issue #12647: The None object now has a __bool__() method that returns False. - Formerly, bool(None) returned False only because of special case logic - in PyObject_IsTrue(). - -- Issue #12579: str.format_map() now raises a ValueError if used on a - format string that contains positional fields. Initial patch by - Julian Berman. - -- Issue #10271: Allow warnings.showwarning() be any callable. - -- Issue #11627: Fix segfault when __new__ on a exception returns a - non-exception class. - -- Issue #12149: Update the method cache after a type's dictionary gets - cleared by the garbage collector. This fixes a segfault when an instance - and its type get caught in a reference cycle, and the instance's - deallocator calls one of the methods on the type (e.g. when subclassing - IOBase). Diagnosis and patch by Davide Rizzo. - -- Issue #9611, Issue #9015: FileIO.read() clamps the length to INT_MAX on Windows. - -- Issue #9642: Uniformize the tests on the availability of the mbcs codec, add - a new HAVE_MBCS define. - -- Issue #9642: Fix filesystem encoding initialization: use the ANSI code page - on Windows if the mbcs codec is not available, and fail with a fatal error if - we cannot get the locale encoding (if nl_langinfo(CODESET) is not available) - instead of using UTF-8. - -- When a generator yields, do not retain the caller's exception state on the - generator. - -- Issue #12475: Prevent generators from leaking their exception state into the - caller's frame as they return for the last time. - -- Issue #12291: You can now load multiple marshalled objects from a stream, - with other data interleaved between marshalled objects. - -- Issue #12356: When required positional or keyword-only arguments are not - given, produce a informative error message which includes the name(s) of the - missing arguments. - -- Issue #12370: Fix super with no arguments when __class__ is overriden in the - class body. - -- Issue #12084: os.stat on Windows now works properly with relative symbolic - links when called from any directory. - -- Loosen type restrictions on the __dir__ method. __dir__ can now return any - sequence, which will be converted to a list and sorted by dir(). - -- Issue #12265: Make error messages produced by passing an invalid set of - arguments to a function more informative. - -- Issue #12225: Still allow Python to build if Python is not in its hg repo or - mercurial is not installed. - -- Issue #1195: my_fgets() now always clears errors before calling fgets(). Fix - the following case: sys.stdin.read() stopped with CTRL+d (end of file), - raw_input() interrupted by CTRL+c. - -- Issue #12216: Allow unexpected EOF errors to happen on any line of the file. - -- Issue #12199: The TryExcept and TryFinally and AST nodes have been unified - into a Try node. - -- Issue #9670: Increase the default stack size for secondary threads on - Mac OS X and FreeBSD to reduce the chances of a crash instead of a - "maximum recursion depth" RuntimeError exception. - (patch by Ronald Oussoren) - -- Issue #12106: The use of the multiple-with shorthand syntax is now reflected - in the AST. - -- Issue #12190: Try to use the same filename object when compiling unmarshalling - a code objects in the same file. - -- Issue #12166: Move implementations of dir() specialized for various types into - the __dir__() methods of those types. - -- Issue #5715: In socketserver, close the server socket in the child process. - -- Correct lookup of __dir__ on objects. Among other things, this causes errors - besides AttributeError found on lookup to be propagated. - -- Issue #12060: Use sig_atomic_t type and volatile keyword in the signal - module. Patch written by Charles-François Natali. - -- Issue #1746656: Added the if_nameindex, if_indextoname, if_nametoindex - methods to the socket module. - -- Issue #12044: Fixed subprocess.Popen when used as a context manager to - wait for the process to end when exiting the context to avoid unintentionally - leaving zombie processes around. - -- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c, - clear the end-of-file indicator after CTRL+d. - -- Issue #1856: Avoid crashes and lockups when daemon threads run while the - interpreter is shutting down; instead, these threads are now killed when - they try to take the GIL. - -- Issue #9756: When calling a method descriptor or a slot wrapper descriptor, - the check of the object type doesn't read the __class__ attribute anymore. - Fix a crash if a class override its __class__ attribute (e.g. a proxy of the - str type). Patch written by Andreas Stührk. - -- Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_* - APIs, to avoid a crash with the pthread implementation in RHEL 5. Patch - by Charles-François Natali. - -- Issue #10914: Initialize correctly the filesystem codec when creating a new - subinterpreter to fix a bootstrap issue with codecs implemented in Python, as - the ISO-8859-15 codec. - -- Issue #11918: OS/2 and VMS are no more supported because of the lack of - maintainer. - -- Issue #6780: fix starts/endswith error message to mention that tuples are - accepted too. - -- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files - between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP - chars (e.g. "\U00012345"[0]). - -- Issue #11845: Fix typo in rangeobject.c that caused a crash in - compute_slice_indices. Patch by Daniel Urban. - -- Issue #5673: Added a `timeout` keyword argument to subprocess.Popen.wait, - subprocess.Popen.communicated, subprocess.call, subprocess.check_call, and - subprocess.check_output. If the blocking operation takes more than `timeout` - seconds, the `subprocess.TimeoutExpired` exception is raised. - -- Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted - (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch - written by Charles-Francois Natali. - -- Issue #9319: Include the filename in "Non-UTF8 code ..." syntax error. - -- Issue #10785: Store the filename as Unicode in the Python parser. - -- Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes - on Windows. - -- Issue #10998: Remove mentions of -Q, sys.flags.division_warning and - Py_DivisionWarningFlag left over from Python 2. - -- Issue #11244: Remove an unnecessary peepholer check that was preventing - negative zeros from being constant-folded properly. - -- Issue #11395: io.FileIO().write() clamps the data length to 32,767 bytes on - Windows if the file is a TTY to workaround a Windows bug. The Windows console - returns an error (12: not enough space error) on writing into stdout if - stdout mode is binary and the length is greater than 66,000 bytes (or less, - depending on heap usage). - -- Issue #11320: fix bogus memory management in Modules/getpath.c, leading to - a possible crash when calling Py_SetPath(). - -- Issue #11432: A bug was introduced in subprocess.Popen on posix systems with - 3.2.0 where the stdout or stderr file descriptor being the same as the stdin - file descriptor would raise an exception. webbrowser.open would fail. fixed. - -- Issue #9856: Change object.__format__ with a non-empty format string - to be a DeprecationWarning. In 3.2 it was a PendingDeprecationWarning. - In 3.4 it will be a TypeError. - -- Issue #11244: The peephole optimizer is now able to constant-fold - arbitrarily complex expressions. This also fixes a 3.2 regression where - operations involving negative numbers were not constant-folded. - -- Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when - there are many tags (e.g. when using mq). Patch by Nadeem Vawda. - -- Issue #11335: Fixed a memory leak in list.sort when the key function - throws an exception. - -- Issue #8923: When a string is encoded to UTF-8 in strict mode, the result is - cached into the object. Examples: str.encode(), str.encode('utf-8'), - PyUnicode_AsUTF8String() and PyUnicode_AsEncodedString(unicode, "utf-8", - NULL). - -- Issue #10829: Refactor PyUnicode_FromFormat(), use the same function to parse - the format string in the 3 steps, fix crashs on invalid format strings. - -- Issue #13007: whichdb should recognize gdbm 1.9 magic numbers. - -- Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with - a buffer struct having a NULL data pointer. - -- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and - sys.stdin uses universal newline (replace '\r\n' by '\n'). - -- Issue #11828: startswith and endswith now accept None as slice index. - Patch by Torsten Becker. - -- Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx(). - It encoded the Unicode filename to UTF-8, but the encoding fails on - undecodable filename (on surrogate characters) which raises an unexpected - UnicodeEncodeError on recursion limit. - -- Issue #11187: Remove bootstrap code (use ASCII) of - PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the - locale encoding) in PyUnicode_EncodeFSDefault(). - -- Check for NULL result in PyType_FromSpec. - -- Issue #10516: New copy() and clear() methods for lists and bytearrays. - -- Issue #11386: bytearray.pop() now throws IndexError when the bytearray is - empty, instead of OverflowError. - -- Issue #12380: The rjust, ljust and center methods of bytes and bytearray - now accept a bytearray argument. - -Library -------- - -- Issue #14195: An issue that caused weakref.WeakSet instances to incorrectly - return True for a WeakSet instance 'a' in both 'a < a' and 'a > a' has been - fixed. - -- Issue #14166: Pickler objects now have an optional ``dispatch_table`` - attribute which allows to set custom per-pickler reduction functions. - Patch by sbt. - -- Issue #14177: marshal.loads() now raises TypeError when given an unicode - string. Patch by Guilherme Gonçalves. - -- Issue #13550: Remove the debug machinery from the threading module: remove - verbose arguments from all threading classes and functions. - -- Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary, - WeakValueDictionary) to return a better approximation when some objects - are dead or dying. Moreover, the implementation is now O(1) rather than - O(n). - -- Issue #11841: Fix comparison bug with 'rc' versions in packaging.version. - Patch by Filip Gruszczyński. - -- Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils - on Windows. Also fixed in packaging. - -- Issue #8033: sqlite3: Fix 64-bit integer handling in user functions - on 32-bit architectures. Initial patch by Philippe Devalkeneer. - -- HTMLParser is now able to handle slashes in the start tag. - -- Issue #13641: Decoding functions in the base64 module now accept ASCII-only - unicode strings. Patch by Catalin Iacob. - -- Issue #14043: Speed up importlib's _FileFinder by at least 8x, and add a - new importlib.invalidate_caches() function. - -- Issue #14001: CVE-2012-0845: xmlrpc: Fix an endless loop in - SimpleXMLRPCServer upon malformed POST request. - -- Issue #13961: Move importlib over to using os.replace() for atomic renaming. - -- Do away with ambiguous level values (as suggested by PEP 328) in - importlib.__import__() by raising ValueError when level < 0. - -- Issue #2489: pty.spawn could consume 100% cpu when it encountered an EOF. - -- Issue #13014: Fix a possible reference leak in SSLSocket.getpeercert(). - -- Issue #13777: Add PF_SYSTEM sockets on OS X. - Patch by Michael Goderbauer. - -- Issue #13015: Fix a possible reference leak in defaultdict.__repr__. - Patch by Suman Saha. - -- Issue #1326113: distutils' and packaging's build_ext commands option now - correctly parses multiple values (separated by whitespace or commas) given - to their --libraries option. - -- Issue #10287: nntplib now queries the server's CAPABILITIES first before - sending MODE READER, and only sends it if not already in READER mode. - Patch by Hynek Schlawack. - -- Issue #13993: HTMLParser is now able to handle broken end tags when - strict=False. - -- Issue #13930: lib2to3 now supports writing converted output files to another - directory tree as well as copying unchanged files and altering the file - suffix. - -- Issue #9750: Fix sqlite3.Connection.iterdump on tables and fields - with a name that is a keyword or contains quotes. Patch by Marko - Kohtala. - -- Issue #10287: nntplib now queries the server's CAPABILITIES again after - authenticating (since the result may change, according to RFC 4643). - Patch by Hynek Schlawack. - -- Issue #13590: On OS X 10.7 and 10.6 with Xcode 4.2, building - Distutils-based packages with C extension modules may fail because - Apple has removed gcc-4.2, the version used to build python.org - 64-bit/32-bit Pythons. If the user does not explicitly override - the default C compiler by setting the CC environment variable, - Distutils will now attempt to compile extension modules with clang - if gcc-4.2 is required but not found. Also as a convenience, if - the user does explicitly set CC, substitute its value as the default - compiler in the Distutils LDSHARED configuration variable for OS X. - (Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u - SDK, neither of which are available in Xcode 4. This change does not - attempt to override settings to support their use with Xcode 4.) - -- Issue #13960: HTMLParser is now able to handle broken comments when - strict=False. - -- When '' is a path (e.g. in sys.path), make sure __file__ uses the current - working directory instead of '' in importlib. - -- Issue #13609: Add two functions to query the terminal size: - os.get_terminal_size (low level) and shutil.get_terminal_size (high level). - Patch by Zbigniew Jędrzejewski-Szmek. - -- Issue #13845: On Windows, time.time() now uses GetSystemTimeAsFileTime() - instead of ftime() to have a resolution of 100 ns instead of 1 ms (the clock - accuracy is between 0.5 ms and 15 ms). - -- Issue #13846: Add time.monotonic(), monotonic clock. - -- Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on - Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to - make sure two listeners can't bind to the same socket/pipe (or any existing - socket/pipe). - -- Issue #10811: Fix recursive usage of cursors. Instead of crashing, - raise a ProgrammingError now. - -- Issue #13734: Add os.fwalk(), a directory walking function yielding file - descriptors. - -- Issue #2945: Make the distutils upload command aware of bdist_rpm products. - -- Issue #13712: pysetup create should not convert package_data to extra_files. - -- Issue #11805: package_data in setup.cfg should allow more than one value. - -- Issue #13676: Handle strings with embedded zeros correctly in sqlite3. - -- Issue #8828: Add new function os.replace(), for cross-platform renaming - with overwriting. - -- Issue #13848: open() and the FileIO constructor now check for NUL - characters in the file name. Patch by Hynek Schlawack. - -- Issue #13806: The size check in audioop decompression functions was too - strict and could reject valid compressed data. Patch by Oleg Plakhotnyuk. - -- Issue #13812: When a multiprocessing Process child raises an exception, - flush stderr after printing the exception traceback. - -- Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC - IV attack countermeasure. - -- Issue #13847: time.localtime() and time.gmtime() now raise an OSError instead - of ValueError on failure. time.ctime() and time.asctime() now raises an - OSError if localtime() failed. time.clock() now raises a RuntimeError if the - processor time used is not available or its value cannot be represented - -- Issue #13772: In os.symlink() under Windows, do not try to guess the link - target's type (file or directory). The detection was buggy and made the - call non-atomic (therefore prone to race conditions). - -- Issue #6631: Disallow relative file paths in urllib urlopen methods. - -- Issue #13722: Avoid silencing ImportErrors when initializing the codecs - registry. - -- Issue #13781: Fix GzipFile bug that caused an exception to be raised when - opening for writing using a fileobj returned by os.fdopen(). - -- Issue #13803: Under Solaris, distutils doesn't include bitness - in the directory name. - -- Issue #10278: Add time.wallclock() function, monotonic clock. - -- Issue #13809: Fix regression where bz2 module wouldn't work when threads are - disabled. Original patch by Amaury Forgeot d'Arc. - -- Issue #13589: Fix some serialization primitives in the aifc module. - Patch by Oleg Plakhotnyuk. - -- Issue #13642: Unquote before b64encoding user:password during Basic - Authentication. Patch contributed by Joonas Kuorilehto. - -- Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor. - The hang would occur when retrieving the result of a scheduled future after - the executor had been shut down. - -- Issue #13502: threading: Fix a race condition in Event.wait() that made it - return False when the event was set and cleared right after. - -- Issue #9993: When the source and destination are on different filesystems, - and the source is a symlink, shutil.move() now recreates a symlink on the - destination instead of copying the file contents. Patch by Jonathan Niehof - and Hynek Schlawack. - -- Issue #12926: Fix a bug in tarfile's link extraction. - -- Issue #13696: Fix the 302 Relative URL Redirection problem. - -- Issue #13636: Weak ciphers are now disabled by default in the ssl module - (except when SSLv2 is explicitly asked for). - -- Issue #12715: Add an optional symlinks argument to shutil functions - (copyfile, copymode, copystat, copy, copy2). When that parameter is - true, symlinks aren't dereferenced and the operation instead acts on the - symlink itself (or creates one, if relevant). Patch by Hynek Schlawack. - -- Add a flags parameter to select.epoll. - -- Issue #13626: Add support for SSL Diffie-Hellman key exchange, through the - SSLContext.load_dh_params() method and the ssl.OP_SINGLE_DH_USE option. - -- Issue #11006: Don't issue low level warning in subprocess when pipe2() fails. - -- Issue #13620: Support for Chrome browser in webbrowser. Patch contributed - by Arnaud Calmettes. - -- Issue #11829: Fix code execution holes in inspect.getattr_static for - metaclasses with metaclasses. Patch by Andreas Stührk. - -- Issue #12708: Add starmap() and starmap_async() methods (similar to - itertools.starmap()) to multiprocessing.Pool. Patch by Hynek Schlawack. - -- Issue #1785: Fix inspect and pydoc with misbehaving descriptors. - -- Issue #13637: "a2b" functions in the binascii module now accept ASCII-only - unicode strings. - -- Issue #13634: Add support for querying and disabling SSL compression. - -- Issue #13627: Add support for SSL Elliptic Curve-based Diffie-Hellman - key exchange, through the SSLContext.set_ecdh_curve() method and the - ssl.OP_SINGLE_ECDH_USE option. - -- Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers - choose the cipher based on their own preferences, rather than on the - client's. - -- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas - Stührk. - -- Issue #7502: Fix equality comparison for DocTestCase instances. Patch by - Cédric Krier. - -- Issue #11870: threading: Properly reinitialize threads internal locks and - condition variables to avoid deadlocks in child processes. - -- Issue #8035: urllib: Fix a bug where the client could remain stuck after a - redirection or an error. - -- Issue #13560: os.strerror() now uses the current locale encoding instead of - UTF-8. - -- Issue #8373: The filesystem path of AF_UNIX sockets now uses the filesystem - encoding and the surrogateescape error handler, rather than UTF-8. Patch - by David Watson. - -- Issue #10350: Read and save errno before calling a function which might - overwrite it. Original patch by Hallvard B Furuseth. - -- Issue #11610: Introduce a more general way to declare abstract properties. - -- Issue #13591: A bug in importlib has been fixed that caused import_module - to load a module twice. - -- Issue #13449 sched.scheduler.run() method has a new "blocking" parameter which - when set to False makes run() execute the scheduled events due to expire - soonest (if any) and then return. Patch by Giampaolo Rodolà. - -- Issue #8684 sched.scheduler class can be safely used in multi-threaded - environments. Patch by Josiah Carlson and Giampaolo Rodolà. - -- Alias resource.error to OSError ala PEP 3151. - -- Issue #5689: Add support for lzma compression to the tarfile module. - -- Issue #13248: Turn 3.2's PendingDeprecationWarning into 3.3's - DeprecationWarning. It covers 'cgi.escape', 'importlib.abc.PyLoader', - 'importlib.abc.PyPycLoader', 'nntplib.NNTP.xgtitle', 'nntplib.NNTP.xpath', - and private attributes of 'smtpd.SMTPChannel'. - -- Issue #5905, Issue #13560: time.strftime() is now using the current locale - encoding, instead of UTF-8, if the wcsftime() function is not available. - -- Issue #13464: Add a readinto() method to http.client.HTTPResponse. Patch - by Jon Kuhn. - -- tarfile.py: Correctly detect bzip2 compressed streams with blocksizes - other than 900k. - -- Issue #13439: Fix many errors in turtle docstrings. - -- Issue #6715: Add a module 'lzma' for compression using the LZMA algorithm. - Thanks to Per Øyvind Karlsen for the initial implementation. - -- Issue #13487: Make inspect.getmodule robust against changes done to - sys.modules while it is iterating over it. - -- Issue #12618: Fix a bug that prevented py_compile from creating byte - compiled files in the current directory. Initial patch by Sjoerd de Vries. - -- Issue #13444: When stdout has been closed explicitly, we should not attempt - to flush it at shutdown and print an error. - -- Issue #12567: The curses module uses Unicode functions for Unicode arguments - when it is linked to the ncurses library. It encodes also Unicode strings to - the locale encoding instead of UTF-8. - -- Issue #12856: Ensure child processes do not inherit the parent's random - seed for filename generation in the tempfile module. Patch by Brian - Harring. - -- Issue #9957: SpooledTemporaryFile.truncate() now accepts an optional size - parameter, as other file-like objects. Patch by Ryan Kelly. - -- Issue #13458: Fix a memory leak in the ssl module when decoding a - certificate with a subjectAltName. Patch by Robert Xiao. - -- Issue #13415: os.unsetenv() doesn't ignore errors anymore. - -- Issue #13245: sched.scheduler class constructor's timefunc and - delayfunct parameters are now optional. - scheduler.enter and scheduler.enterabs methods gained a new kwargs parameter. - Patch contributed by Chris Clark. - -- Issue #12328: Under Windows, refactor handling of Ctrl-C events and - make _multiprocessing.win32.WaitForMultipleObjects interruptible when - the wait_flag parameter is false. Patch by sbt. - -- Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is - raised when the wrapped raw file is non-blocking and the write would block. - Previous code assumed that the raw write() would raise BlockingIOError, but - RawIOBase.write() is defined to returned None when the call would block. - Patch by sbt. - -- Issue #13358: HTMLParser now calls handle_data only once for each CDATA. - -- Issue #4147: minidom's toprettyxml no longer adds whitespace around a text - node when it is the only child of an element. Initial patch by Dan - Kenigsberg. - -- Issue #13374: The Windows bytes API has been deprecated in the os module. Use - Unicode filenames instead of bytes filenames to not depend on the ANSI code - page anymore and to support any filename. - -- Issue #13297: Use bytes type to send and receive binary data through XMLRPC. - -- Issue #6397: Support "/dev/poll" polling objects in select module, - under Solaris & derivatives. - -- Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly - handles non-valid attributes, including adjacent and unquoted attributes. - -- Issue #13193: Fix distutils.filelist.FileList and packaging.manifest.Manifest - under Windows. - -- Issue #13384: Remove unnecessary __future__ import in Lib/random.py - -- Issue #13149: Speed up append-only StringIO objects. - -- Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely - when called with a timeout. Patch by Arnaud Ysmal. - -- Issue #13254: Fix Maildir initialization so that maildir contents - are read correctly. - -- Issue #3067: locale.setlocale() now raises TypeError if the second - argument is an invalid iterable. Its documentation and docstring - were also updated. Initial patch by Jyrki Pulliainen. - -- Issue #13140: Fix the daemon_threads attribute of ThreadingMixIn. - -- Issue #13339: Fix compile error in posixmodule.c due to missing semicolon. - Thanks to Robert Xiao. - -- Byte compilation in packaging is now isolated from the calling Python -B or - -O options, instead of being disallowed under -B or buggy under -O. - -- Issue #10570: curses.putp() and curses.tparm() are now expecting a byte - string, instead of a Unicode string. - -- Issue #13295: http.server now produces valid HTML 4.01 strict. - -- Issue #2892: preserve iterparse events in case of SyntaxError. - -- Issue #13287: urllib.request and urllib.error now contains an __all__ - attribute to expose only relevant classes and functions. Patch by Florent - Xicluna. - -- Issue #670664: Fix HTMLParser to correctly handle the content of - ``<script>...</script>`` and ``<style>...</style>``. - -- Issue #10817: Fix urlretrieve function to raise ContentTooShortError even - when reporthook is None. Patch by Jyrki Pulliainen. - -- Fix the xmlrpc.client user agent to return something similar to - urllib.request user agent: "Python-xmlrpc/3.3". - -- Issue #13293: Better error message when trying to marshal bytes using - xmlrpc.client. - -- Issue #13291: NameError in xmlrpc package. - -- Issue #13258: Use callable() built-in in the standard library. - -- Issue #13273: fix a bug that prevented HTMLParser to properly detect some - tags when strict=False. - -- Issue #11183: Add finer-grained exceptions to the ssl module, so that - you don't have to inspect the exception's attributes in the common case. - -- Issue #13216: Add cp65001 codec, the Windows UTF-8 (CP_UTF8). - -- Issue #13226: Add RTLD_xxx constants to the os module. These constants can be - used with sys.setdlopenflags(). - -- Issue #10278: Add clock_getres(), clock_gettime() and CLOCK_xxx constants to - the time module. time.clock_gettime(time.CLOCK_MONOTONIC) provides a - monotonic clock - -- Issue #10332: multiprocessing: fix a race condition when a Pool is closed - before all tasks have completed. - -- Issue #13255: wrong docstrings in array module. - -- Issue #8540: Remove deprecated Context._clamp attribute in Decimal module. - -- Issue #13235: Added DeprecationWarning to logging.warn() method and function. - -- Issue #9168: now smtpd is able to bind privileged port. - -- Issue #12529: fix cgi.parse_header issue on strings with double-quotes and - semicolons together. Patch by Ben Darnell and Petri Lehtinen. - -- Issue #13227: functools.lru_cache() now has a option to distinguish - calls with different argument types. - -- Issue #6090: zipfile raises a ValueError when a document with a timestamp - earlier than 1980 is provided. Patch contributed by Petri Lehtinen. - -- Issue #13150: sysconfig no longer parses the Makefile and config.h files - when imported, instead doing it at build time. This makes importing - sysconfig faster and reduces Python startup time by 20%. - -- Issue #12448: smtplib now flushes stdout while running ``python -m smtplib`` - in order to display the prompt correctly. - -- Issue #12454: The mailbox module is now using ASCII, instead of the locale - encoding, to read and write .mh_sequences files. - -- Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are - now available on Windows. - -- Issue #1673007: urllib.request now supports HEAD request via new method argument. - Patch contributions by David Stanek, Patrick Westerhoff and Ezio Melotti. - -- Issue #12386: packaging does not fail anymore when writing the RESOURCES - file. - -- Issue #13158: Fix decoding and encoding of GNU tar specific base-256 number - fields in tarfile. - -- Issue #13025: mimetypes is now reading MIME types using the UTF-8 encoding, - instead of the locale encoding. - -- Issue #10653: On Windows, use strftime() instead of wcsftime() because - wcsftime() doesn't format time zone correctly. - -- Issue #13150: The tokenize module doesn't compile large regular expressions - at startup anymore. - -- Issue #11171: Fix distutils.sysconfig.get_makefile_filename when Python was - configured with different prefix and exec-prefix. - -- Issue #11254: Teach distutils and packaging to compile .pyc and .pyo files in - PEP 3147-compliant __pycache__ directories. - -- Issue #7367: Fix pkgutil.walk_paths to skip directories whose - contents cannot be read. - -- Issue #3163: The struct module gets new format characters 'n' and 'N' - supporting C integer types ``ssize_t`` and ``size_t``, respectively. - -- Issue #13099: Fix sqlite3.Cursor.lastrowid under a Turkish locale. - Reported and diagnosed by Thomas Kluyver. - -- Issue #13087: BufferedReader.seek() now always raises UnsupportedOperation - if the underlying raw stream is unseekable, even if the seek could be - satisfied using the internal buffer. Patch by John O'Connor. - -- Issue #7689: Allow pickling of dynamically created classes when their - metaclass is registered with copyreg. Patch by Nicolas M. Thiéry and Craig - Citro. - -- Issue #13034: When decoding some SSL certificates, the subjectAltName - extension could be unreported. - -- Issue #12306: Expose the runtime version of the zlib C library as a constant, - ZLIB_RUNTIME_VERSION, in the zlib module. Patch by Torsten Landschoff. - -- Issue #12959: Add collections.ChainMap to collections.__all__. - -- Issue #8933: distutils' PKG-INFO files and packaging's METADATA files will - now correctly report Metadata-Version: 1.1 instead of 1.0 if a Classifier or - Download-URL field is present. - -- Issue #12567: Add curses.unget_wch() function. Push a character so the next - get_wch() will return it. - -- Issue #9561: distutils and packaging now writes egg-info files using UTF-8, - instead of the locale encoding. - -- Issue #8286: The distutils command sdist will print a warning message instead - of crashing when an invalid path is given in the manifest template. - -- Issue #12841: tarfile unnecessarily checked the existence of numerical user - and group ids on extraction. If one of them did not exist the respective id - of the current user (i.e. root) was used for the file and ownership - information was lost. - -- Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape - more than 128 entities. Patch by Peter Otten. - -- Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses. - -- Issue #12494: On error, call(), check_call(), check_output() and - getstatusoutput() functions of the subprocess module now kill the process, - read its status (to avoid zombis) and close pipes. - -- Issue #12720: Expose low-level Linux extended file attribute functions in os. - -- Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi - now respect a --skip-build option given to bdist. The packaging commands - were fixed too. - -- Issue #12847: Fix a crash with negative PUT and LONG_BINPUT arguments in - the C pickle implementation. - -- Issue #11564: Avoid crashes when trying to pickle huge objects or containers - (more than 2**31 items). Instead, in most cases, an OverflowError is raised. - -- Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is - greater than FD_SETSIZE. - -- Issue #12839: Fix crash in zlib module due to version mismatch. - Fix by Richard M. Tew. - -- Issue #9923: The mailcap module now correctly uses the platform path - separator for the MAILCAP environment variable on non-POSIX platforms. - -- Issue #12835: Follow up to #6560 that unconditionally prevents use of the - unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets. Patch by David - Watson. - -- Issue #12803: SSLContext.load_cert_chain() now accepts a password argument - to be used if the private key is encrypted. Patch by Adam Simpkins. - -- Issue #11657: Fix sending file descriptors over 255 over a multiprocessing - Pipe. - -- Issue #12811: tabnanny.check() now promptly closes checked files. Patch by - Anthony Briggs. - -- Issue #6560: The sendmsg/recvmsg API is now exposed by the socket module - when provided by the underlying platform, supporting processing of - ancillary data in pure Python code. Patch by David Watson and Heiko Wundram. - -- Issue #12326: On Linux, sys.platform doesn't contain the major version - anymore. It is now always 'linux', instead of 'linux2' or 'linux3' depending - on the Linux version used to build Python. - -- Issue #12213: Fix a buffering bug with interleaved reads and writes that - could appear on BufferedRandom streams. - -- Issue #12778: Reduce memory consumption when JSON-encoding a large - container of many small objects. - -- Issue #12650: Fix a race condition where a subprocess.Popen could leak - resources (FD/zombie) when killed at the wrong time. - -- Issue #12744: Fix inefficient representation of integers between 2**31 and - 2**63 on systems with a 64-bit C "long". - -- Issue #12646: Add an 'eof' attribute to zlib.Decompress, to make it easier to - detect truncated input streams. - -- Issue #11513: Fix exception handling ``tarfile.TarFile.gzopen()`` when - the file cannot be opened. - -- Issue #12687: Fix a possible buffering bug when unpickling text mode - (protocol 0, mostly) pickles. - -- Issue #10087: Fix the html output format of the calendar module. - -- Issue #13121: add support for inplace math operators to collections.Counter. - -- Add support for unary plus and unary minus to collections.Counter. - -- Issue #12683: urlparse updated to include svn as schemes that uses relative - paths. (svn from 1.5 onwards support relative path). - -- Issue #12655: Expose functions from sched.h in the os module: sched_yield(), - sched_setscheduler(), sched_getscheduler(), sched_setparam(), - sched_get_min_priority(), sched_get_max_priority(), sched_rr_get_interval(), - sched_getaffinity(), sched_setaffinity(). - -- Add ThreadError to threading.__all__. - -- Issues #11104, #8688: Fix the behavior of distutils' sdist command with - manually-maintained MANIFEST files. - -- Issue #11281: smtplib.STMP gets source_address parameter, which adds the - ability to bind to specific source address on a machine with multiple - interfaces. Patch by Paulo Scardine. - -- Issue #12464: tempfile.TemporaryDirectory.cleanup() should not follow - symlinks: fix it. Patch by Petri Lehtinen. - -- Issue #8887: "pydoc somebuiltin.somemethod" (or help('somebuiltin.somemethod') - in Python code) now finds the doc of the method. - -- Issue #10968: Remove indirection in threading. The public names (Event, - Condition, etc.) used to be factory functions returning instances of hidden - classes (_Event, _Condition, etc.), because (if Guido recalls correctly) this - code pre-dates the ability to subclass extension types. It is now possible - to inherit from these classes, without having to import the private - underscored names like multiprocessing did. - -- Issue #9723: Add shlex.quote functions, to escape filenames and command - lines. - -- Issue #12603: Fix pydoc.synopsis() on files with non-negative st_mtime. - -- Issue #12514: Use try/finally to assure the timeit module restores garbage - collections when it is done. - -- Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is - given as a low fd, it gets overwritten. - -- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscates) - ``Connection: close`` header. - -- Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling. - -- Issue #1813: Fix codec lookup under Turkish locales. - -- Issue #12591: Improve support of "universal newlines" in the subprocess - module: the piped streams can now be properly read from or written to. - -- Issue #12591: Allow io.TextIOWrapper to work with raw IO objects (without - a read1() method), and add a *write_through* parameter to mandate - unbuffered writes. - -- Issue #10883: Fix socket leaks in urllib.request when using FTP. - -- Issue #12592: Make Python build on OpenBSD 5 (and future major releases). - -- Issue #12372: POSIX semaphores are broken on AIX: don't use them. - -- Issue #12551: Provide a get_channel_binding() method on SSL sockets so as - to get channel binding data for the current SSL session (only the - "tls-unique" channel binding is implemented). This allows the implementation - of certain authentication mechanisms such as SCRAM-SHA-1-PLUS. Patch by - Jacek Konieczny. - -- Issue #665194: email.utils now has format_datetime and parsedate_to_datetime - functions, allowing for round tripping of RFC2822 format dates. - -- Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2 - directory, so that "import DLFCN" and other similar imports work on - Linux 3.0. - -- Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN - commands; they aren't required and in fact postfix doesn't support that form. - -- Issue #12273: Remove ast.__version__. AST changes can be accounted for by - checking sys.version_info or sys._mercurial. - -- Silence spurious "broken pipe" tracebacks when shutting down a - ProcessPoolExecutor. - -- Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor - by joining all queues and processes when shutdown() is called. - -- Issue #11603: Fix a crash when __str__ is rebound as __repr__. Patch by - Andreas Stührk. - -- Issue #11321: Fix a crash with multiple imports of the _pickle module when - embedding Python. Patch by Andreas Stührk. - -- Issue #6755: Add get_wch() method to curses.window class. Patch by Iñigo - Serna. - -- Add cgi.closelog() function to close the log file. - -- Issue #12502: asyncore: fix polling loop with AF_UNIX sockets. - -- Issue #4376: ctypes now supports nested structures in a endian different than - the parent structure. Patch by Vlad Riscutia. - -- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a - TextIOWrapper to a huge value, not TypeError. - -- Issue #12504: Close file handles in a timely manner in packaging.database. - This fixes a bug with the remove (uninstall) feature on Windows. - -- Issues #12169 and #10510: Factor out code used by various packaging commands - to make HTTP POST requests, and make sure it uses CRLF. - -- Issue #12016: Multibyte CJK decoders now resynchronize faster. They only - ignore the first byte of an invalid byte sequence. For example, - b'\xff\n'.decode('gb2312', 'replace') gives '\ufffd\n' instead of '\ufffd'. - -- Issue #12459: time.sleep() now raises a ValueError if the sleep length is - negative, instead of an infinite sleep on Windows or raising an IOError on - Linux for example, to have the same behaviour on all platforms. - -- Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support - Python scripts using a encoding different than UTF-8 (read the coding cookie - of the script). - -- Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors - if the process has only one pipe. - -- Issue #12467: warnings: fix a race condition if a warning is emitted at - shutdown, if globals()['__file__'] is None. - -- Issue #12451: pydoc: importfile() now opens the Python script in binary mode, - instead of text mode using the locale encoding, to avoid encoding issues. - -- Issue #12451: runpy: run_path() now opens the Python script in binary mode, - instead of text mode using the locale encoding, to support other encodings - than UTF-8 (scripts using the coding cookie). - -- Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead - of the text mode (using the locale encoding) to avoid encoding issues. - -- Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better - conformance to the RFCs: correctly handle Sender and Resent- headers. - -- Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by - the garbage collector while the Heap lock is held. - -- Issue #12462: time.sleep() now immediately calls the (Python) signal handler - if it is interrupted by a signal, instead of having to wait until the next - instruction. - -- Issue #12442: new shutil.disk_usage function, providing total, used and free - disk space statistics. - -- Issue #12451: The XInclude default loader of xml.etree now decodes files from - UTF-8 instead of the locale encoding if the encoding is not specified. It now - also opens XML files for the parser in binary mode instead of the text mode - to avoid encoding issues. - -- Issue #12451: doctest.debug_script() doesn't create a temporary file - anymore to avoid encoding issues. - -- Issue #12451: pydoc.synopsis() now reads the encoding cookie if available, - to read the Python script from the right encoding. - -- Issue #12451: distutils now opens the setup script in binary mode to read the - encoding cookie, instead of opening it in UTF-8. - -- Issue #9516: On Mac OS X, change Distutils to no longer globally attempt to - check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the - interpreter process. This could cause failures in non-Distutils subprocesses - and was unreliable since tests or user programs could modify the interpreter - environment after Distutils set it. Instead, have Distutils set the - deployment target only in the environment of each build subprocess. It is - still possible to globally override the default by setting - MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be - greater or equal to the default value, the value with which the interpreter - was built. Also, implement the same handling in packaging. - -- Issue #12422: In the copy module, don't store objects that are their own copy - in the memo dict. - -- Issue #12303: Add sigwaitinfo() and sigtimedwait() to the signal module. - -- Issue #12404: Remove C89 incompatible code from mmap module. Patch by Akira - Kitada. - -- Issue #1874: email now detects and reports as a defect the presence of - any CTE other than 7bit, 8bit, or binary on a multipart. - -- Issue #12383: Fix subprocess module with env={}: don't copy the environment - variables, start with an empty environment. - -- Issue #11637: Fix support for importing packaging setup hooks from the - project directory. - -- Issue #6771: Moved the curses.wrapper function from the single-function - wrapper module into __init__, eliminating the module. Since __init__ was - already importing the function to curses.wrapper, there is no API change. - -- Issue #11584: email.header.decode_header no longer fails if the header - passed to it is a Header object, and Header/make_header no longer fail - if given binary unknown-8bit input. - -- Issue #11700: mailbox proxy object close methods can now be called multiple - times without error. - -- Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method. - -- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP - connection if its getresponse() method fails with a socket error. Patch - written by Ezio Melotti. - -- Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files. - Original patch by Erik Bray. - -- Issue #9284: Allow inspect.findsource() to find the source of doctest - functions. - -- Issue #11595: Fix assorted bugs in packaging.util.cfg_to_args, a - compatibility helper for the distutils-packaging transition. Original patch - by Erik Bray. - -- Issue #12287: In ossaudiodev, check that the device isn't closed in several - methods. - -- Issue #12009: Fixed regression in netrc file comment handling. - -- Issue #12246: Warn and fail when trying to install a third-party project from - an uninstalled Python (built in a source checkout). Original patch by - Tshepang Lekhonkhobe. - -- Issue #10694: zipfile now ignores garbage at the end of a zipfile. - -- Issue #12283: Fixed regression in smtplib quoting of leading dots in DATA. - -- Issue #10424: Argparse now includes the names of the missing required - arguments in the missing arguments error message. - -- Issue #12168: SysLogHandler now allows NUL termination to be controlled using - a new 'append_nul' attribute on the handler. - -- Issue #11583: Speed up os.path.isdir on Windows by using GetFileAttributes - instead of os.stat. - -- Issue #12021: Make mmap's read() method argument optional. Patch by Petri - Lehtinen. - -- Issue #9205: concurrent.futures.ProcessPoolExecutor now detects killed - children and raises BrokenProcessPool in such a situation. Previously it - would reliably freeze/deadlock. - -- Issue #12040: Expose a new attribute ``sentinel`` on instances of - ``multiprocessing.Process``. Also, fix Process.join() to not use polling - anymore, when given a timeout. - -- Issue #11893: Remove obsolete internal wrapper class ``SSLFakeFile`` in the - smtplib module. Patch by Catalin Iacob. - -- Issue #12080: Fix a Decimal.power() case that took an unreasonably long time - to compute. - -- Issue #12221: Remove __version__ attributes from pyexpat, pickle, tarfile, - pydoc, tkinter, and xml.parsers.expat. This were useless version constants - left over from the Mercurial transition - -- Named tuples now work correctly with vars(). - -- Issue #12085: Fix an attribute error in subprocess.Popen destructor if the - constructor has failed, e.g. because of an undeclared keyword argument. Patch - written by Oleg Oshmyan. - -- Issue #12028: Make threading._get_ident() public, rename it to - threading.get_ident() and document it. This function was already used using - _thread.get_ident(). - -- Issue #12171: IncrementalEncoder.reset() of CJK codecs (multibytecodec) calls - encreset() instead of decreset(). - -- Issue #12218: Removed wsgiref.egg-info. - -- Issue #12196: Add pipe2() to the os module. - -- Issue #985064: Make plistlib more resilient to faulty input plists. - Patch by Mher Movsisyan. - -- Issue #1625: BZ2File and bz2.decompress() now support multi-stream files. - Initial patch by Nir Aides. - -- Issue #12175: BufferedReader.read(-1) now calls raw.readall() if available. - -- Issue #12175: FileIO.readall() now only reads the file position and size - once. - -- Issue #12175: RawIOBase.readall() now returns None if read() returns None. - -- Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError - if the file is closed. - -- Issue #11109: New service_action method for BaseServer, used by ForkingMixin - class for cleanup. Initial Patch by Justin Warkentin. - -- Issue #12045: Avoid duplicate execution of command in - ctypes.util._get_soname(). Patch by Sijin Joseph. - -- Issue #10818: Remove the Tk GUI and the serve() function of the pydoc module, - pydoc -g has been deprecated in Python 3.2 and it has a new enhanced web - server. - -- Issue #1441530: In imaplib, read the data in one chunk to speed up large - reads and simplify code. - -- Issue #12070: Fix the Makefile parser of the sysconfig module to handle - correctly references to "bogus variable" (e.g. "prefix=$/opt/python"). - -- Issue #12100: Don't reset incremental encoders of CJK codecs at each call to - their encode() method anymore, but continue to call the reset() method if the - final argument is True. - -- Issue #12049: Add RAND_bytes() and RAND_pseudo_bytes() functions to the ssl - module. - -- Issue #6501: os.device_encoding() returns None on Windows if the application - has no console. - -- Issue #12105: Add O_CLOEXEC to the os module. - -- Issue #12079: Decimal('Infinity').fma(Decimal('0'), (3.91224318126786e+19+0j)) - now raises TypeError (reflecting the invalid type of the 3rd argument) rather - than Decimal.InvalidOperation. - -- Issue #12124: zipimport doesn't keep a reference to zlib.decompress() anymore - to be able to unload the module. - -- Add the packaging module, an improved fork of distutils (also known as - distutils2). - -- Issue #12065: connect_ex() on an SSL socket now returns the original errno - when the socket's timeout expires (it used to return None). - -- Issue #8809: The SMTP_SSL constructor and SMTP.starttls() now support - passing a ``context`` argument pointing to an ssl.SSLContext instance. - Patch by Kasun Herath. - -- Issue #9516: Issue #9516: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET - is set in shell. - -- Issue #8650: Make zlib module 64-bit clean. compress(), decompress() and - their incremental counterparts now raise OverflowError if given an input - larger than 4GB, instead of silently truncating the input and returning - an incorrect result. - -- Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail - attribute when called without a max_length argument. - -- Issue #12062: Fix a flushing bug when doing a certain type of I/O sequence - on a file opened in read+write mode (namely: reading, seeking a bit forward, - writing, then seeking before the previous write but still within buffered - data, and writing again). - -- Issue #9971: Write an optimized implementation of BufferedReader.readinto(). - Patch by John O'Connor. - -- Issue #11799: urllib.request Authentication Handlers will raise a ValueError - when presented with an unsupported Authentication Scheme. Patch contributed - by Yuval Greenfield. - -- Issue #10419, #6011: build_scripts command of distutils handles correctly - non-ASCII path (path to the Python executable). Open and write the script in - binary mode, but ensure that the shebang is decodable from UTF-8 and from the - encoding of the script. - -- Issue #8498: In socket.accept(), allow to specify 0 as a backlog value in - order to accept exactly one connection. Patch by Daniel Evers. - -- Issue #12011: signal.signal() and signal.siginterrupt() raise an OSError, - instead of a RuntimeError: OSError has an errno attribute. - -- Issue #3709: add a flush_headers method to BaseHTTPRequestHandler, which - manages the sending of headers to output stream and flushing the internal - headers buffer. Patch contribution by Andrew Schaaf - -- Issue #11743: Rewrite multiprocessing connection classes in pure Python. - -- Issue #11164: Stop trying to use _xmlplus in the xml module. - -- Issue #11888: Add log2 function to math module. Patch written by Mark - Dickinson. - -- Issue #12012: ssl.PROTOCOL_SSLv2 becomes optional. - -- Issue #8407: The signal handler writes the signal number as a single byte - instead of a nul byte into the wakeup file descriptor. So it is possible to - wait more than one signal and know which signals were raised. - -- Issue #8407: Add pthread_kill(), sigpending() and sigwait() functions to the - signal module. - -- Issue #11927: SMTP_SSL now uses port 465 by default as documented. Patch - by Kasun Herath. - -- Issue #12002: ftplib's abort() method raises TypeError. - -- Issue #11916: Add a number of MacOSX specific definitions to the errno module. - Patch by Pierre Carrier. - -- Issue #11999: fixed sporadic sync failure mailbox.Maildir due to its trying to - detect mtime changes by comparing to the system clock instead of to the - previous value of the mtime. - -- Issue #11072: added MLSD command (RFC-3659) support to ftplib. - -- Issue #8808: The IMAP4_SSL constructor now allows passing an SSLContext - parameter to control parameters of the secure channel. Patch by Sijin - Joseph. - -- ntpath.samefile failed to notice that "a.txt" and "A.TXT" refer to the same - file on Windows XP. As noticed in issue #10684. - -- Issue #12000: When a SSL certificate has a subjectAltName without any - dNSName entry, ssl.match_hostname() should use the subject's commonName. - Patch by Nicolas Bareil. - -- Issue #10775: assertRaises, assertRaisesRegex, assertWarns, and - assertWarnsRegex now accept a keyword argument 'msg' when used as context - managers. Initial patch by Winston Ewert. - -- Issue #10684: shutil.move used to delete a folder on case insensitive - filesystems when the source and destination name where the same except - for the case. - -- Issue #11647: objects created using contextlib.contextmanager now support - more than one call to the function when used as a decorator. Initial patch - by Ysj Ray. - -- Issue #11930: Removed deprecated time.accept2dyear variable. - Removed year >= 1000 restriction from datetime.strftime. - -- logging: don't define QueueListener if Python has no thread support. - -- functools.cmp_to_key() now works with collections.Hashable(). - -- Issue #11277: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get - around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso. - -- Issue #8407: Add signal.pthread_sigmask() function to fetch and/or change the - signal mask of the calling thread. - -- Issue #11858: configparser.ExtendedInterpolation expected lower-case section - names. - -- Issue #11324: ConfigParser(interpolation=None) now works correctly. - -- Issue #11811: ssl.get_server_certificate() is now IPv6-compatible. Patch - by Charles-François Natali. - -- Issue #11763: don't use difflib in TestCase.assertMultiLineEqual if the - strings are too long. - -- Issue #11236: getpass.getpass responds to ctrl-c or ctrl-z on terminal. - -- Issue #11856: Speed up parsing of JSON numbers. - -- Issue #11005: threading.RLock()._release_save() raises a RuntimeError if the - lock was not acquired. - -- Issue #11258: Speed up ctypes.util.find_library() under Linux by a factor - of 5 to 10. Initial patch by Jonas H. - -- Issue #11382: Trivial system calls, such as dup() or pipe(), needn't - release the GIL. Patch by Charles-François Natali. - -- Issue #11223: Add threading._info() function providing informations about - the thread implementation. - -- Issue #11731: simplify/enhance email parser/generator API by introducing - policy objects. - -- Issue #11768: The signal handler of the signal module only calls - Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or - parallel calls. PyErr_SetInterrupt() writes also into the wake up file. - -- Issue #11492: fix several issues with header folding in the email package. - -- Issue #11852: Add missing imports and update tests. - -- Issue #11875: collections.OrderedDict's __reduce__ was temporarily - mutating the object instead of just working on a copy. - -- Issue #11467: Fix urlparse behavior when handling urls which contains scheme - specific part only digits. Patch by Santoso Wijaya. - -- collections.Counter().copy() now works correctly for subclasses. - -- Issue #11474: Fix the bug with url2pathname() handling of '/C|/' on Windows. - Patch by Santoso Wijaya. - -- Issue #11684: complete email.parser bytes API by adding BytesHeaderParser. - -- The bz2 module now handles 4GiB+ input buffers correctly. - -- Issue #9233: Fix json.loads('{}') to return a dict (instead of a list), when - _json is not available. - -- Issue #11830: Remove unnecessary introspection code in the decimal module. - -- Issue #11703: urllib2.geturl() does not return correct url when the original - url contains #fragment. - -- Issue #10019: Fixed regression in json module where an indent of 0 stopped - adding newlines and acted instead like 'None'. - -- Issue #11186: pydoc ignores a module if its name contains a surrogate - character in the index of modules. - -- Issue #11815: Use a light-weight SimpleQueue for the result queue in - concurrent.futures.ProcessPoolExecutor. - -- Issue #5162: Treat services like frozen executables to allow child spawning - from multiprocessing.forking on Windows. - -- logging.basicConfig now supports an optional 'handlers' argument taking an - iterable of handlers to be added to the root logger. Additional parameter - checks were also added to basicConfig. - -- Issue #11814: Fix likely typo in multiprocessing.Pool._terminate(). - -- Issue #11747: Fix range formatting in difflib.context_diff() and - difflib.unified_diff(). - -- Issue #8428: Fix a race condition in multiprocessing.Pool when terminating - worker processes: new processes would be spawned while the pool is being - shut down. Patch by Charles-François Natali. - -- Issue #2650: re.escape() no longer escapes the '_'. - -- Issue #11757: select.select() now raises ValueError when a negative timeout - is passed (previously, a select.error with EINVAL would be raised). Patch - by Charles-François Natali. - -- Issue #7311: fix html.parser to accept non-ASCII attribute values. - -- Issue #11605: email.parser.BytesFeedParser was incorrectly converting - multipart subparts with an 8-bit CTE into unicode instead of preserving the - bytes. - -- Issue #1690608: email.util.formataddr is now RFC 2047 aware: it now has a - charset parameter that defaults to utf-8 and is used as the charset for RFC - 2047 encoding when the realname contains non-ASCII characters. - -- Issue #10963: Ensure that subprocess.communicate() never raises EPIPE. - -- Issue #10791: Implement missing method GzipFile.read1(), allowing GzipFile - to be wrapped in a TextIOWrapper. Patch by Nadeem Vawda. - -- Issue #11707: Added a fast C version of functools.cmp_to_key(). - Patch by Filip Gruszczyński. - -- Issue #11688: Add sqlite3.Connection.set_trace_callback(). Patch by - Torsten Landschoff. - -- Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve - private keys. - -- Issue #5863: Rewrite BZ2File in pure Python, and allow it to accept - file-like objects using a new ``fileobj`` constructor argument. Patch by - Nadeem Vawda. - -- unittest.TestCase.assertSameElements has been removed. - -- sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not - called yet: detect bootstrap (startup) issues earlier. - -- Issue #11393: Add the new faulthandler module. - -- Issue #11618: Fix the timeout logic in threading.Lock.acquire() under Windows. - -- Removed the 'strict' argument to email.parser.Parser, which has been - deprecated since Python 2.4. - -- Issue #11256: Fix inspect.getcallargs on functions that take only keyword - arguments. - -- Issue #11696: Fix ID generation in msilib. - -- itertools.accumulate now supports an optional *func* argument for - a user-supplied binary function. - -- Issue #11692: Remove unnecessary demo functions in subprocess module. - -- Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when - trying to pack a negative (in-range) integer. - -- Issue #11675: multiprocessing.[Raw]Array objects created from an integer size - are now zeroed on creation. This matches the behaviour specified by the - documentation. - -- Issue #7639: Fix short file name generation in bdist_msi - -- Issue #11635: Don't use polling in worker threads and processes launched by - concurrent.futures. - -- Issue #5845: Automatically read readline configuration to enable completion - in interactive mode. - -- Issue #6811: Allow importlib to change a code object's co_filename attribute - to match the path to where the source code currently is, not where the code - object originally came from. - -- Issue #8754: Have importlib use the repr of a module name in error messages. - -- Issue #11591: Prevent "import site" from modifying sys.path when python - was started with -S. - -- collections.namedtuple() now adds a _source attribute to the generated - class. This make the source more accessible than the outdated - "verbose" option which prints to stdout but doesn't make the source - string available. - -- Issue #11371: Mark getopt error messages as localizable. Patch by Filip - Gruszczyński. - -- Issue #11333: Add __slots__ to collections ABCs. - -- Issue #11628: cmp_to_key generated class should use __slots__. - -- Issue #11666: let help() display named tuple attributes and methods - that start with a leading underscore. - -- Issue #11662: Make urllib and urllib2 ignore redirections if the - scheme is not HTTP, HTTPS or FTP (CVE-2011-1521). - -- Issue #5537: Fix time2isoz() and time2netscape() functions of - httplib.cookiejar for expiration year greater than 2038 on 32-bit systems. - -- Issue #4391: Use proper gettext plural forms in optparse. - -- Issue #11127: Raise a TypeError when trying to pickle a socket object. - -- Issue #11563: ``Connection: close`` header is sent by requests using URLOpener - class which helps in closing of sockets after connection is over. Patch - contributions by Jeff McNeil and Nadeem Vawda. - -- Issue #11459: A ``bufsize`` value of 0 in subprocess.Popen() really creates - unbuffered pipes, such that select() works properly on them. - -- Issue #5421: Fix misleading error message when one of socket.sendto()'s - arguments has the wrong type. Patch by Nikita Vetoshkin. - -- Issue #10812: Add some extra posix functions to the os module. - -- Issue #10979: unittest stdout buffering now works with class and module - setup and teardown. - -- Issue #11243: fix the parameter querying methods of Message to work if - the headers contain un-encoded non-ASCII data. - -- Issue #11401: fix handling of headers with no value; this fixes a regression - relative to Python2 and the result is now the same as it was in Python2. - -- Issue #9298: base64 bodies weren't being folded to line lengths less than 78, - which was a regression relative to Python2. Unlike Python2, the last line - of the folded body now ends with a carriage return. - -- Issue #11560: shutil.unpack_archive now correctly handles the format - parameter. Patch by Evan Dandrea. - -- Issue #5870: Add `subprocess.DEVNULL` constant. - -- Issue #11133: fix two cases where inspect.getattr_static can trigger code - execution. Patch by Andreas Stührk. - -- Issue #11569: use absolute path to the sysctl command in multiprocessing to - ensure that it will be found regardless of the shell PATH. This ensures - that multiprocessing.cpu_count works on default installs of MacOSX. - -- Issue #11501: disutils.archive_utils.make_zipfile no longer fails if zlib is - not installed. Instead, the zipfile.ZIP_STORED compression is used to create - the ZipFile. Patch by Natalia B. Bidart. - -- Issue #11289: `smtp.SMTP` class is now a context manager so it can be used - in a `with` statement. Contributed by Giampaolo Rodola. - -- Issue #11554: Fixed support for Japanese codecs; previously the body output - encoding was not done if euc-jp or shift-jis was specified as the charset. - -- Issue #11407: `TestCase.run` returns the result object used or created. - Contributed by Janathan Hartley. - -- Issue #11500: Fixed a bug in the OS X proxy bypass code for fully qualified - IP addresses in the proxy exception list. - -- Issue #11491: dbm.error is no longer raised when dbm.open is called with - the "n" as the flag argument and the file exists. The behavior matches - the documentation and general logic. - -- Issue #1162477: Postel Principle adjustment to email date parsing: handle the - fact that some non-compliant MUAs use '.' instead of ':' in time specs. - -- Issue #11131: Fix sign of zero in decimal.Decimal plus and minus - operations when the rounding mode is ROUND_FLOOR. - -- Issue #9935: Speed up pickling of instances of user-defined classes. - -- Issue #5622: Fix curses.wrapper to raise correct exception if curses - initialization fails. - -- Issue #11408: In threading.Lock.acquire(), only call gettimeofday() when - really necessary. Patch by Charles-François Natali. - -- Issue #11391: Writing to a mmap object created with - ``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a - TypeError. Patch by Charles-François Natali. - -- Issue #9795: add context manager protocol support for nntplib.NNTP class. - -- Issue #11306: mailbox in certain cases adapts to an inability to open - certain files in read-write mode. Previously it detected this by - checking for EACCES, now it also checks for EROFS. - -- Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors - on accept(), send() and recv(). - -- Issue #11377: Deprecate platform.popen() and reimplement it with os.popen(). - -- Issue #8513: On UNIX, subprocess supports bytes command string. - -- Issue #10866: Add socket.sethostname(). Initial patch by Ross Lagerwall. - -- Issue #11140: Lock.release() now raises a RuntimeError when attempting - to release an unacquired lock, as claimed in the threading documentation. - The _thread.error exception is now an alias of RuntimeError. Patch by - Filip Gruszczyński. Patch for _dummy_thread by Aymeric Augustin. - -- Issue #8594: ftplib now provides a source_address parameter to specify which - (address, port) to bind to before connecting. - -- Issue #11326: Add the missing connect_ex() implementation for SSL sockets, - and make it work for non-blocking connects. - -- Issue #11297: Add collections.ChainMap(). - -- Issue #10755: Add the posix.flistdir() function. Patch by Ross Lagerwall. - -- Issue #4761: Add the ``*at()`` family of functions (openat(), etc.) to the - posix module. Patch by Ross Lagerwall. - -- Issue #7322: Trying to read from a socket's file-like object after a timeout - occurred now raises an error instead of silently losing data. - -- Issue #11291: poplib.POP no longer suppresses errors on quit(). - -- Issue #11177: asyncore's create_socket() arguments can now be omitted. - -- Issue #6064: Add a ``daemon`` keyword argument to the threading.Thread - and multiprocessing.Process constructors in order to override the - default behaviour of inheriting the daemonic property from the current - thread/process. - -- Issue #10956: Buffered I/O classes retry reading or writing after a signal - has arrived and the handler returned successfully. - -- Issue #10784: New os.getpriority() and os.setpriority() functions. - -- Issue #11114: Fix catastrophic performance of tell() on text files (up - to 1000x faster in some cases). It is still one to two order of magnitudes - slower than binary tell(). - -- Issue #10882: Add os.sendfile function. - -- Issue #10868: Allow usage of the register method of an ABC as a class - decorator. - -- Issue #11224: Fixed a regression in tarfile that affected the file-like - objects returned by TarFile.extractfile() regarding performance, memory - consumption and failures with the stream interface. - -- Issue #10924: Adding salt and Modular Crypt Format to crypt library. - Moved old C wrapper to _crypt, and added a Python wrapper with - enhanced salt generation and simpler API for password generation. - -- Issue #11074: Make 'tokenize' so it can be reloaded. - -- Issue #11085: Moved collections abstract base classes into a separate - module called collections.abc, following the pattern used by importlib.abc. - For backwards compatibility, the names are imported into the collections - module. - -- Issue #4681: Allow mmap() to work on file sizes and offsets larger than - 4GB, even on 32-bit builds. Initial patch by Ross Lagerwall, adapted for - 32-bit Windows. - -- Issue #11169: compileall module uses repr() to format filenames and paths to - escape surrogate characters and show spaces. - -- Issue #11089: Fix performance issue limiting the use of ConfigParser() - with large config files. - -- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers - larger than 4GB. Patch by Nadeem Vawda. - -- Issue #11388: Added a clear() method to MutableSequence - -- Issue #11174: Add argparse.MetavarTypeHelpFormatter, which uses type names - for the names of optional and positional arguments in help messages. - -- Issue #9348: Raise an early error if argparse nargs and metavar don't match. - -- Issue #9026: Fix order of argparse sub-commands in help messages. - -- Issue #9347: Fix formatting for tuples in argparse type= error messages. - -- Issue #12191: Added shutil.chown() to change user and/or group owner of a - given path also specifying their names. - -- Issue #13988: The _elementtree accelerator is used whenever available. - Now xml.etree.cElementTree becomes a deprecated alias to ElementTree. - -Build ------ - -- Issue #6807: Run msisupport.mak earlier. - -- Issue #10580: Minor grammar change in Windows installer. - -- Issue #13326: Clean __pycache__ directories correctly on OpenBSD. - -- PEP 393: the configure option --with-wide-unicode is removed. - -- Issue #12852: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008 - functions on OpenBSD (e.g. fdopendir). - -- Issue #11863: Remove support for legacy systems deprecated in Python 3.2 - (following PEP 11). These systems are systems using Mach C Threads, - SunOS lightweight processes, GNU pth threads and IRIX threads. - -- Issue #8746: Correct faulty configure checks so that os.chflags() and - os.lchflags() are once again built on systems that support these - functions (BSD and OS X). Also add new stat file flags for OS X - (UF_HIDDEN and UF_COMPRESSED). - -- Issue #10645: Installing Python no longer creates a - Python-X.Y.Z-pyX.Y.egg-info file in the lib-dynload directory. - -- Do not accidentally include the directory containing sqlite.h twice when - building sqlite3. - -- Issue #11217: For 64-bit/32-bit Mac OS X universal framework builds, - ensure "make install" creates symlinks in --prefix bin for the "-32" - files in the framework bin directory like the installer does. - -- Issue #11347: Use --no-as-needed when linking libpython3.so. - -- Issue #11411: Fix 'make DESTDIR=' with a relative destination. - -- Issue #11268: Prevent Mac OS X Installer failure if Documentation - package had previously been installed. - -- Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2. - -IDLE ----- - -- Issue #14409: IDLE now properly executes commands in the Shell window - when it cannot read the normal config files on startup and - has to use the built-in default key bindings. - There was previously a bug in one of the defaults. - -- IDLE can be launched as python -m idlelib - -- Issue #3573: IDLE hangs when passing invalid command line args - (directory(ies) instead of file(s)) (Patch by Guilherme Polo) - -- Issue #14200: IDLE shell crash on printing non-BMP unicode character. - -- Issue #5219: Prevent event handler cascade in IDLE. - -- Issue #964437: Make IDLE help window non-modal. - Patch by Guilherme Polo and Roger Serwy. - -- Issue #13933: IDLE auto-complete did not work with some imported - module, like hashlib. (Patch by Roger Serwy) - -- Issue #13506: Add '' to path for IDLE Shell when started and restarted with Restart Shell. - Original patches by Marco Scataglini and Roger Serwy. - -- Issue #4625: If IDLE cannot write to its recent file or breakpoint files, - display a message popup and continue rather than crash. Original patch by - Roger Serwy. - -- Issue #8641: Update IDLE 3 syntax coloring to recognize b".." and not u"..". - Patch by Tal Einat. - -- Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart. - (Patch by Roger Serwy) - -- Issue #9871: Prevent IDLE 3 crash when given byte stings - with invalid hex escape sequences, like b'\x0'. - (Original patch by Claudiu Popa.) - -- Issue #12636: IDLE reads the coding cookie when executing a Python script. - -- Issue #12540: Prevent zombie IDLE processes on Windows due to changes - in os.kill(). - -- Issue #12590: IDLE editor window now always displays the first line - when opening a long file. With Tk 8.5, the first line was hidden. - -- Issue #11088: don't crash when using F5 to run a script in IDLE on MacOSX - with Tk 8.5. - -- Issue #1028: Tk returns invalid Unicode null in %A: UnicodeDecodeError. - With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused - IDLE to exit. Converted to valid Unicode null in PythonCmd(). - -- Issue #11718: IDLE's open module dialog couldn't find the __init__.py - file in a package. - -Tools/Demos ------------ - -- Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches. - Patch by Francisco Martín Brugué. - -- Issue #13930: 2to3 is now able to write its converted output files to another - directory tree as well as copying unchanged files and altering the file - suffix. See its new -o, -W and --add-suffix options. This makes it more - useful in many automated code translation workflows. - -- Issue #13628: python-gdb.py is now able to retrieve more frames in the Python - traceback if Python is optimized. - -- Issue #11996: libpython (gdb), replace "py-bt" command by "py-bt-full" and - add a smarter "py-bt" command printing a classic Python traceback. - -- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again. - -- Issue #10639: reindent.py no longer converts newlines and will raise - an error if attempting to convert a file with mixed newlines. - "--newline" option added to specify new line character. - -Extension Modules ------------------ - -- Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in - non-pydebug builds. Several extension modules now compile cleanly when - assert()s are enabled in standard builds (-DDEBUG flag). - -- Issue #13840: The error message produced by ctypes.create_string_buffer - when given a Unicode string has been fixed. - -- Issue #9975: socket: Fix incorrect use of flowinfo and scope_id. Patch by - Vilmos Nebehaj. - -- Issue #7777: socket: Add Reliable Datagram Sockets (PF_RDS) support. - -- Issue #13159: FileIO and BZ2Compressor/BZ2Decompressor now use a linear-time - buffer growth strategy instead of a quadratic-time one. - -- Issue #10141: socket: Add SocketCAN (PF_CAN) support. Initial patch by - Matthias Fuchs, updated by Tiago Gonçalves. - -- Issue #13070: Fix a crash when a TextIOWrapper caught in a reference cycle - would be finalized after the reference to its underlying BufferedRWPair's - writer got cleared by the GC. - -- Issue #12881: ctypes: Fix segfault with large structure field names. - -- Issue #13058: ossaudiodev: fix a file descriptor leak on error. Patch by - Thomas Jarosch. - -- Issue #13013: ctypes: Fix a reference leak in PyCArrayType_from_ctype. - Thanks to Suman Saha for finding the bug and providing a patch. - -- Issue #13022: Fix: _multiprocessing.recvfd() doesn't check that - file descriptor was actually received. - -- Issue #1172711: Add 'long long' support to the array module. - Initial patch by Oren Tirosh and Hirokazu Yamamoto. - -- Issue #12483: ctypes: Fix a crash when the destruction of a callback - object triggers the garbage collector. - -- Issue #12950: Fix passing file descriptors in multiprocessing, under - OpenIndiana/Illumos. - -- Issue #12764: Fix a crash in ctypes when the name of a Structure field is not - a string. - -- Issue #11241: subclasses of ctypes.Array can now be subclassed. - -- Issue #9651: Fix a crash when ctypes.create_string_buffer(0) was passed to - some functions like file.write(). - -- Issue #10309: Define _GNU_SOURCE so that mremap() gets the proper - signature. Without this, architectures where sizeof void* != sizeof int are - broken. Patch given by Hallvard B Furuseth. - -- Issue #12051: Fix segfault in json.dumps() while encoding highly-nested - objects using the C accelerations. - -- Issue #12017: Fix segfault in json.loads() while decoding highly-nested - objects using the C accelerations. - -- Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set - to an instance of the class. - -Tests ------ - -- Issue #13125: Silence spurious test_lib2to3 output when in non-verbose mode. - Patch by Mikhail Novikov. - -- Issue #13447: Add a test file to host regression tests for bugs in the - scripts found in the Tools directory. - -- Issue #10881: Fix test_site failure with OS X framework builds. - -- Issue #13901: Prevent test_distutils failures on OS X with --enable-shared. - -- Issue #13862: Fix spurious failure in test_zlib due to runtime/compile time - minor versions not matching. - -- Issue #12804: Fix test_socket and test_urllib2net failures when running tests - on a system without internet access. - -- Issue #13726: Fix the ambiguous -S flag in regrtest. It is -o/--slow for slow - tests. - -- Issue #11659: Fix ResourceWarning in test_subprocess introduced by #11459. - Patch by Ben Hayden. - -- Issue #11577: fix ResourceWarning triggered by improved binhex test coverage - -- Issue #11509: Significantly increase test coverage of fileinput. - Patch by Denver Coneybeare at PyCon 2011 Sprints. - -- Issue #11689: Fix a variable scoping error in an sqlite3 test - -- Issue #13786: Remove unimplemented 'trace' long option from regrtest.py. - -- Issue #13725: Fix regrtest to recognize the documented -d flag. - Patch by Erno Tukia. - -- Issue #13304: Skip test case if user site-packages disabled (-s or - PYTHONNOUSERSITE). (Patch by Carl Meyer) - -- Issue #5661: Add a test for ECONNRESET/EPIPE handling to test_asyncore. Patch - by Xavier de Gaye. - -- Issue #13218: Fix test_ssl failures on Debian/Ubuntu. - -- Re-enable lib2to3's test_parser.py tests, though with an expected failure - (see issue #13125). - -- Issue #12656: Add tests for IPv6 and Unix sockets to test_asyncore. - -- Issue #6484: Add unit tests for mailcap module (patch by Gregory Nofi) - -- Issue #11651: Improve the Makefile test targets to run more of the test suite - more quickly. The --multiprocess option is now enabled by default, reducing - the amount of time needed to run the tests. "make test" and "make quicktest" - now include some resource-intensive tests, but no longer run the test suite - twice to check for bugs in .pyc generation. Tools/scripts/run_test.py provides - an easy platform-independent way to run test suite with sensible defaults. - -- Issue #12331: The test suite for the packaging module can now run from an - installed Python. - -- Issue #12331: The test suite for lib2to3 can now run from an installed - Python. - -- Issue #12626: In regrtest, allow to filter tests using a glob filter - with the ``-m`` (or ``--match``) option. This works with all test cases - using the unittest module. This is useful with long test suites - such as test_io or test_subprocess. - -- Issue #12624: It is now possible to fail after the first failure when - running in verbose mode (``-v`` or ``-W``), by using the ``--failfast`` - (or ``-G``) option to regrtest. This is useful with long test suites - such as test_io or test_subprocess. - -- Issue #12587: Correct faulty test file and reference in test_tokenize. - (Patch by Robert Xiao) - -- Issue #12573: Add resource checks for dangling Thread and Process objects. - -- Issue #12549: Correct test_platform to not fail when OS X returns 'x86_64' - as the processor type on some Mac systems. - -- Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary - failure in name resolution. - -- Issue #11812: Solve transient socket failure to connect to 'localhost' - in test_telnetlib.py. - -- Solved a potential deadlock in test_telnetlib.py. Related to issue #11812. - -- Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and - an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder - Web site. - -- Avoid failing in test_urllibnet.test_bad_address when some overzealous - DNS service (e.g. OpenDNS) resolves a non-existent domain name. The test - is now skipped instead. - -- Issue #12440: When testing whether some bits in SSLContext.options can be - reset, check the version of the OpenSSL headers Python was compiled against, - rather than the runtime version of the OpenSSL library. - -- Issue #11512: Add a test suite for the cgitb module. Patch by Robbie Clemons. - -- Issue #12497: Install test/data to prevent failures of the various codecmaps - tests. - -- Issue #12496: Install test/capath directory to prevent test_connect_capath - testcase failure in test_ssl. - -- Issue #12469: Run wakeup and pending signal tests in a subprocess to run the - test in a fresh process with only one thread and to not change signal - handling of the parent process. - -- Issue #8716: Avoid crashes caused by Aqua Tk on OSX when attempting to run - test_tk or test_ttk_guionly under a username that is not currently logged - in to the console windowserver (as may be the case under buildbot or ssh). - -- Issue #12407: Explicitly skip test_capi.EmbeddingTest under Windows. - -- Issue #12400: regrtest -W doesn't rerun the tests twice anymore, but captures - the output and displays it on failure instead. regrtest -v doesn't print the - error twice anymore if there is only one error. - -- Issue #12141: Install copies of template C module file so that - test_build_ext of test_distutils and test_command_build_ext of - test_packaging are no longer silently skipped when - run outside of a build directory. - -- Issue #8746: Add additional tests for os.chflags() and os.lchflags(). - Patch by Garrett Cooper. - -- Issue #10736: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9 - 2.8+ on Mac OS X. (Patch by Ronald Oussoren) - -- Issue #12057: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2, - iso2022_kr). - -- Issue #12096: Fix a race condition in test_threading.test_waitfor(). Patch - written by Charles-François Natali. - -- Issue #11614: import __hello__ prints "Hello World!". Patch written by - Andreas Stührk. - -- Issue #5723: Improve json tests to be executed with and without accelerations. - -- Issue #12041: Make test_wait3 more robust. - -- Issue #11873: Change regex in test_compileall to fix occasional failures when - when the randomly generated temporary path happened to match the regex. - -- Issue #11958: Fix FTP tests for IPv6, bind to "::1" instead of "localhost". - Patch written by Charles-Francois Natali. - -- Issue #8407, #11859: Fix tests of test_io using threads and an alarm: use - pthread_sigmask() to ensure that the SIGALRM signal is received by the main - thread. - -- Issue #11811: Factor out detection of IPv6 support on the current host - and make it available as ``test.support.IPV6_ENABLED``. Patch by - Charles-François Natali. - -- Issue #10914: Add a minimal embedding test to test_capi. - -- Issue #11223: Skip test_lock_acquire_interruption() and - test_rlock_acquire_interruption() of test_threadsignals if a thread lock is - implemented using a POSIX mutex and a POSIX condition variable. A POSIX - condition variable cannot be interrupted by a signal (e.g. on Linux, the - futex system call is restarted). - -- Issue #11790: Fix sporadic failures in test_multiprocessing.WithProcessesTestCondition. - -- Fix possible "file already exists" error when running the tests in parallel. - -- Issue #11719: Fix message about unexpected test_msilib skip on non-Windows - platforms. Patch by Nadeem Vawda. - -- Issue #11727: Add a --timeout option to regrtest: if a test takes more than - TIMEOUT seconds, dumps the traceback of all threads and exits. - -- Issue #11653: fix -W with -j in regrtest. - -- The email test suite now lives in the Lib/test/test_email package. The test - harness code has also been modernized to allow use of new unittest features. - -- regrtest now discovers test packages as well as test modules. - -- Issue #11577: improve test coverage of binhex.py. Patch by Arkady Koplyarov. - -- New test_crashers added to exercise the scripts in the Lib/test/crashers - directory and confirm they fail as expected - -- Issue #11578: added test for the timeit module. Patch by Michael Henry. - -- Issue #11503: improve test coverage of posixpath.py. Patch by Evan Dandrea. - -- Issue #11505: improves test coverage of string.py, increases granularity of - string.Formatter tests. Initial patch by Alicia Arlen. - -- Issue #11548: Improve test coverage of the shutil module. Patch by - Evan Dandrea. - -- Issue #11554: Reactivated test_email_codecs. - -- Issue #11505: improves test coverage of string.py. Patch by Alicia - Arlen - -- Issue #11490: test_subprocess.test_leaking_fds_on_error no longer gives a - false positive if the last directory in the path is inaccessible. - -- Issue #11223: Fix test_threadsignals to fail, not hang, when the - non-semaphore implementation of locks is used under POSIX. - -- Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by - Pierre Quentel. - -- Issue #9931: Fix hangs in GUI tests under Windows in certain conditions. - Patch by Hirokazu Yamamoto. - -- Issue #10512: Properly close sockets under test.test_cgi. - -- Issue #10992: Make tests pass under coverage. - -- Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due - to open door files. - -- Issue #10990: Prevent tests from clobbering a set trace function. - -C-API ------ - -- Issue #13452: PyUnicode_EncodeDecimal() doesn't support error handlers - different than "strict" anymore. The caller was unable to compute the - size of the output buffer: it depends on the error handler. - -- Issue #13560: Add PyUnicode_DecodeLocale(), PyUnicode_DecodeLocaleAndSize() - and PyUnicode_EncodeLocale() functions to the C API to decode/encode from/to - the current locale encoding. - -- Issue #10831: PyUnicode_FromFormat() supports %li, %lli and %zi formats. - -- Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from - UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode). - Patch written by Ray Allen. - -- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on - narrow build. - -- Add PyObject_GenericGetDict and PyObject_GeneriSetDict. They are generic - implementations for the getter and setter of a ``__dict__`` descriptor of C - types. - -- Issue #13727: Add 3 macros to access PyDateTime_Delta members: - PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS, - PyDateTime_DELTA_GET_MICROSECONDS. - -- Issue #10542: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE, - Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE, - Py_UNICODE_JOIN_SURROGATES. - -- Issue #12724: Add Py_RETURN_NOTIMPLEMENTED macro for returning NotImplemented. - -- PY_PATCHLEVEL_REVISION has been removed, since it's meaningless with - Mercurial. - -- Issue #12173: The first argument of PyImport_ImportModuleLevel is now `const - char *` instead of `char *`. - -- Issue #12380: PyArg_ParseTuple now accepts a bytearray for the 'c' format. - -Documentation -------------- - -- Issue #23006: Improve the documentation and indexing of dict.__missing__. - Add an entry in the language datamodel special methods section. - Revise and index its discussion in the stdtypes mapping/dict section. - -- Issue #13989: Document that GzipFile does not support text mode, and give a - more helpful error message when opened with an invalid mode string. - -- Issue #13921: Undocument and clean up sqlite3.OptimizedUnicode, - which is obsolete in Python 3.x. It's now aliased to str for - backwards compatibility. - -- Issue #12102: Document that buffered files must be flushed before being used - with mmap. Patch by Steffen Daode Nurpmeso. - -- Issue #8982: Improve the documentation for the argparse Namespace object. - -- Issue #9343: Document that argparse parent parsers must be configured before - their children. - -- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument. Done with - great native-speaker help from R. David Murray. - -- Issues #13491 and #13995: Fix many errors in sqlite3 documentation. - Initial patch for #13491 by Johannes Vogel. - -- Issue #13402: Document absoluteness of sys.executable. - -- Issue #13883: PYTHONCASEOK also works on OS X. - -- Issue #9021: Add an introduction to the copy module documentation. - -- Issue #6005: Examples in the socket library documentation use sendall, where - relevant, instead send method. - -- Issue #12798: Updated the mimetypes documentation. - -- Issue #12949: Document the kwonlyargcount argument for the PyCode_New - C API function. - -- Issue #13513: Fix io.IOBase documentation to correctly link to the - io.IOBase.readline method instead of the readline module. - -- Issue #13237: Reorganise subprocess documentation to emphasise convenience - functions and the most commonly needed arguments to Popen. - -- Issue #13141: Demonstrate recommended style for socketserver examples. - -- Issue #11818: Fix tempfile examples for Python 3. - - **(For information about older versions, consult the HISTORY file.)** |