From: Serhiy Storchaka Date: Sun, 9 Aug 2015 10:11:36 +0000 (+0300) Subject: Fixed doubled spaces in Misc/NEWS. X-Git-Tag: v3.5.0rc1~4 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=89e51221b6ab5cef06be02a5da79b23b6040d95f;p=python Fixed doubled spaces in Misc/NEWS. --- 89e51221b6ab5cef06be02a5da79b23b6040d95f diff --cc Misc/NEWS index 209a4b953e,e2da905cb0..5becbfd874 --- a/Misc/NEWS +++ b/Misc/NEWS @@@ -225,2529 -150,2537 +225,2529 @@@ Librar - 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 #5633: Fixed timeit when the statement is a string and the setup is not. +- Issue #24408: Fixed AttributeError in measure() and metrics() methods of + tkinter.Font. -- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument. - Original patch by David Moore. +- Issue #14373: C implementation of functools.lru_cache() now can be used with + methods. -- Issue #23840: tokenize.open() now closes the temporary binary file on error - to fix a resource warning. +- Issue #8232: webbrowser support incomplete on Windows. Patch by Brandon + Milam -- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked - cursor type. +- Issue #24347: Set KeyError if PyDict_GetItemWithError returns NULL. -- 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 #24348: Drop superfluous incref/decref. -- Issue #6598: Increased time precision and random number range in - email.utils.make_msgid() to strengthen the uniqueness of the message ID. +- Issue #24359: Check for changed OrderedDict size during iteration. -- Issue #24091: Fixed various crashes in corner cases in C implementation of - ElementTree. +- Issue #24368: Support keyword arguments in OrderedDict methods. -- Issue #21931: msilib.FCICreate() now raises TypeError in the case of a bad - argument instead of a ValueError with a bogus FCI error number. - Patch by Jeffrey Armstrong. +- Issue #24362: Simplify the C OrderedDict fast nodes resize logic. -- Issue #23796: peek and read1 methods of BufferedReader now raise ValueError - if they called on a closed object. Patch by John Hergenroeder. +- Issue #24377: Fix a ref leak in OrderedDict.__repr__. -- Issue #24521: Fix possible integer overflows in the pickle module. +- Issue #24369: Defend against key-changes during iteration. -- Issue #22931: Allow '[' and ']' in cookie values. +Tests +----- -- Issue #20274: Remove ignored and erroneous "kwargs" parameters from three - METH_VARARGS methods on _sqlite.Connection. +- 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) -- Issue #24094: Fix possible crash in json.encode with poorly behaved dict - subclasses. +Documentation +------------- -- Asyncio issue 222 / PR 231 (Victor Stinner) -- fix @coroutine - functions without __name__. +- Issue #24458: Update documentation to cover multi-phase initialization for + extension modules (PEP 489). Patch by Petr Viktorin. -- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes. - Patch written by William Orr. +- Issue #24351: Clarify what is meant by "identifier" in the context of + string.Template instances. -- The keywords attribute of functools.partial is now always a dictionary. +Build +----- -- Issues #24099, #24100, and #24101: Fix free-after-use bug in heapq's siftup - and siftdown functions. +- Issue #24432: Update Windows builds and OS X 10.5 installer to use OpenSSL + 1.0.2c. -- 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 #23008: Fixed resolving attributes with boolean value is False in pydoc. +What's New in Python 3.5.0 beta 2? +================================== -- Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't - increment unfinished tasks (this bug was introduced in 3.4.3 when - JoinableQueue was merged with Queue). +Release date: 2015-05-31 -- Issue #23908: os functions now reject paths with embedded null character - on Windows instead of silently truncate them. +Core and Builtins +----------------- -- Issue #23728: binascii.crc_hqx() could return an integer outside of the range - 0-0xffff for empty data. +- 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 #23811: Add missing newline to the PyCompileError error message. - Patch by Alex Shkop. +- Issue #24115: Update uses of PyObject_IsTrue(), PyObject_Not(), + PyObject_IsInstance(), PyObject_RichCompareBool() and _PyDict_Contains() + to check for and handle errors correctly. -- Issue #17898: Fix exception in gettext.py when parsing certain plural forms. +- Issue #24328: Fix importing one character extension modules. -- Issue #22982: Improve BOM handling when seeking to multiple positions of - a writable text file. +- Issue #11205: In dictionary displays, evaluate the key before the value. -- 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 #24285: Fixed regression that prevented importing extension modules + from inside packages. Patch by Petr Viktorin. -- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if - the FTP connection failed to fix a ResourceWarning. +Library +------- -- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not - available. Patch by Davin Potts. +- Issue #23247: Fix a crash in the StreamWriter.reset() of CJK codecs. -- 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 #24270: Add math.isclose() and cmath.isclose() functions as per PEP 485. + Contributed by Chris Barker and Tal Einat. -- Issue #23338: Fixed formatting ctypes error messages on Cygwin. - Patch by Makoto Kato. +- Issue #5633: Fixed timeit when the statement is a string and the setup is not. -- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and - arbitrary precision integers added in Tcl 8.5. +- Issue #24326: Fixed audioop.ratecv() with non-default weightB argument. + Original patch by David Moore. -- 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 #16991: Add a C implementation of OrderedDict. -- Issue #21526: Tkinter now supports new boolean type in Tcl 8.5. +- Issue #23934: Fix inspect.signature to fail correctly for builtin types + lacking signature information. Initial patch by James Powell. -- Issue #23838: linecache now clears the cache and returns an empty result on - MemoryError. -- 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. +What's New in Python 3.5.0 beta 1? +================================== -- Issue #23745: The new email header parser now handles duplicate MIME - parameter names without error, similar to how get_param behaves. +Release date: 2015-05-24 -- 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. +Core and Builtins +----------------- -- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes. +- Issue #24276: Fixed optimization of property descriptor getter. -- Issue #21802: The reader in BufferedRWPair now is closed even when closing - writer failed in BufferedRWPair.close(). +- Issue #24268: PEP 489: Multi-phase extension module initialization. + Patch by Petr Viktorin. -- 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 #23955: Add pyvenv.cfg option to suppress registry/environment + lookup for generating sys.path on Windows. -- Issue #21560: An attempt to write a data of wrong type no longer cause - GzipFile corruption. Original patch by Wolfgang Maier. +- Issue #24257: Fixed system error in the comparison of faked + types.SimpleNamespace. -- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes. +- Issue #22939: Fixed integer overflow in iterator object. Patch by + Clement Rouault. -- Issue #23539: If body is None, http.client.HTTPConnection.request now sets - Content-Length to 0 for PUT, POST, and PATCH headers to avoid 411 errors from - some web servers. +- Issue #23985: Fix a possible buffer overrun when deleting a slice from + the front of a bytearray and then appending some other bytes data. -- Issue #22351: The nntplib.NNTP constructor no longer leaves the connection - and socket open until the garbage collector cleans them up. Patch by - Martin Panter. +- Issue #24102: Fixed exception type checking in standard error handlers. -- Issue #23136: _strptime now uniformly handles all days in week 0, including - Dec 30 of previous year. Based on patch by Jim Carroll. +- Issue #15027: The UTF-32 encoder is now 3x to 7x faster. - - Issue #23290: Optimize set_merge() for cases where the target is empty. -- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to - NamedTemporaryFile instance. Patch by Bohuslav Kabrda. ++- Issue #23290: Optimize set_merge() for cases where the target is empty. + (Contributed by Serhiy Storchaka.) -- Issue #22903: The fake test case created by unittest.loader when it fails - importing a test module is now picklable. +- Issue #2292: PEP 448: Additional Unpacking Generalizations. -- Issue #23568: Add rdivmod support to MagicMock() objects. - Patch by Håkan Lövdahl. +- Issue #24096: Make warnings.warn_explicit more robust against mutation of the + warnings.filters list. -- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar. - Patch by Demian Brecht. +- Issue #23996: Avoid a crash when a delegated generator raises an + unnormalized StopIteration exception. Patch by Stefan Behnel. -- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now - handle exceptions raised by an iterator. Patch by Alon Diamant and Davin - Potts. +- Issue #23910: Optimize property() getter calls. Patch by Joe Jevnik. -- Issue #22928: Disabled HTTP header injections in http.client. - Original patch by Demian Brecht. +- Issue #23911: Move path-based importlib bootstrap code to a separate + frozen module. -- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with - imp.reload(). Patch by Thomas Kluyver. +- Issue #24192: Fix namespace package imports. -- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST - flag on certificate stores when it is available. +- Issue #24022: Fix tokenizer crash when processing undecodable source code. -- Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the - SSL layer but the underlying connection hasn't been closed. +- Issue #9951: Added a hex() method to bytes, bytearray, and memoryview. -- Issue #23504: Added an __all__ to the types module. +- Issue #22906: PEP 479: Change StopIteration handling inside generators. -- Issue #20204: Added the __module__ attribute to _tkinter classes. +- Issue #24017: PEP 492: Coroutines with async and await syntax. -- Issue #23521: Corrected pure python implementation of timedelta division. +Library +------- - * Eliminated OverflowError from timedelta * float for some floats; - * Corrected rounding in timedlta true division. +- Issue #14373: Added C implementation of functools.lru_cache(). Based on + patches by Matt Joiner and Alexey Kachayev. -- 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 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 #6639: Module-level turtle functions no longer raise TclError after - closing the window. +- Issue #22189: collections.UserString now supports __getnewargs__(), + __rmod__(), casefold(), format_map(), isprintable(), and maketrans(). + Patch by Joe Jevnik. -- Issues #814253, #9179: Warnings now are raised when group references and - conditional group references are used in lookbehind assertions in regular - expressions. +- Issue 24244: Prevents termination when an invalid format string is + encountered on Windows in strftime. -- Issue #23215: Multibyte codecs with custom error handlers that ignores errors - consumed too much memory and raised SystemError or MemoryError. - Original patch by Aleksi Torhamo. +- Issue #23973: PEP 484: Add the typing module. -- Issue #5700: io.FileIO() called flush() after closing the file. - flush() was not called in close() if closefd=False. +- Issue #23086: The collections.abc.Sequence() abstract base class added + *start* and *stop* parameters to the index() mixin. + Patch by Devin Jeanpierre. -- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding - differs from file system encoding (e.g. on Mac OS). +- 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 #23481: Remove RC4 from the SSL module's default cipher list. +- Issue #24257: Fixed segmentation fault in sqlite3.Row constructor with faked + cursor type. -- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty - docstrings. +- 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 #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb - module. Original patch by Claudiu Popa. +- Issue #9858: Add missing method stubs to _io.RawIOBase. Patch by Laura + Rupprecht. -- Issue #23146: Fix mishandling of absolute Windows paths with forward - slashes in pathlib. +- 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 #23421: Fixed compression in tarfile CLI. Patch by wdv4758h. +- 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 #23367: Fix possible overflows in the unicodedata module. +- Issue #23780: Improved error message in os.path.join() with single argument. -- Issue #23361: Fix possible overflow in Windows subprocess creation code. +- Issue #6598: Increased time precision and random number range in + email.utils.make_msgid() to strengthen the uniqueness of the message ID. -- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the - entire preamble to a multipart body. +- Issue #24091: Fixed various crashes in corner cases in C implementation of + ElementTree. -- Issue #23310: Fix MagicMock's initializer to work with __methods__, just - like configure_mock(). Patch by Kasia Jachim. +- Issue #21931: msilib.FCICreate() now raises TypeError in the case of a bad + argument instead of a ValueError with a bogus FCI error number. + Patch by Jeffrey Armstrong. -- asyncio: New event loop APIs: set_task_factory() and get_task_factory(). +- Issue #13866: *quote_via* argument added to urllib.parse.urlencode. -- asyncio: async() function is deprecated in favour of ensure_future(). +- Issue #20098: New mangle_from policy option for email, default True + for compat32, but False for all other policies. -- Issue #23898: Fix inspect.classify_class_attrs() to support attributes - with overloaded __eq__ and __bool__. Patch by Mike Bayer. +- Issue #24211: The email library now supports RFC 6532: it can generate + headers using utf-8 instead of encoded words. -- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers - around bound methods. +- Issue #16314: Added support for the LZMA compression in distutils. -IDLE ----- +- Issue #21804: poplib now supports RFC 6856 (UTF8). -- Issue #23184: remove unused names and imports in idlelib. - Initial patch by Al Sweigart. +- Issue #18682: Optimized pprint functions for builtin scalar types. -Tests ------ +- Issue #22027: smtplib now supports RFC 6531 (SMTPUTF8). -- 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 #23488: Random generator objects now consume 2x less memory on 64-bit. -- Issue #21520: test_zipfile no longer fails if the word 'bad' appears - anywhere in the name of the current directory. +- Issue #1322: platform.dist() and platform.linux_distribution() functions are + now deprecated. Initial patch by Vajrasky Kok. -- Issue #23799: Added test.support.start_threads() for running and - cleaning up multiple threads. +- Issue #22486: Added the math.gcd() function. The fractions.gcd() function now is + deprecated. Based on patch by Mark Dickinson. -- Issue #22390: test.regrtest now emits a warning if temporary files or - directories are left after running a test. +- Issue #24064: Property() docstrings are now writeable. + (Patch by Berker Peksag.) -- Issue #23583: Added tests for standard IO streams in IDLE. +- Issue #22681: Added support for the koi8_t encoding. -Build ------ +- Issue #22682: Added support for the kz1048 encoding. -- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make - the resulting executable faster. +- Issue #23796: peek and read1 methods of BufferedReader now raise ValueError + if they called on a closed object. Patch by John Hergenroeder. -- Issue #24603: Update Windows builds and OS X 10.5 installer to use OpenSSL - 1.0.2d. +- Issue #21795: smtpd now supports the 8BITMIME extension whenever + the new *decode_data* constructor argument is set to False. -C API ------ +- Issue #24155: optimize heapq.heapify() for better cache performance + when heapifying large lists. -- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error +- Issue #21800: imaplib now supports RFC 5161 (enable), RFC 6855 + (utf8/internationalized email) and automatically encodes non-ASCII + usernames and passwords to UTF8. -Documentation -------------- +- Issue #20274: When calling a _sqlite.Connection, it now complains if passed + any keyword arguments. Previously it silently ignored them. -- 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 #20274: Remove ignored and erroneous "kwargs" parameters from three + METH_VARARGS methods on _sqlite.Connection. -- Issue #20769: Improve reload() docs. Patch by Dorian Pula. +- 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 #23589: Remove duplicate sentence from the FAQ. Patch by Yongzhi Pan. +- Issue #24018: Add a collections.abc.Generator abstract base class. + Contributed by Stefan Behnel. -- Issue #24729: Correct IO tutorial to match implementation regarding - encoding parameter to open function. +- Issue #23880: Tkinter's getint() and getdouble() now support Tcl_Obj. + Tkinter's getdouble() now supports any numbers (in particular int). -- Issue #24351: Clarify what is meant by "identifier" in the context of - string.Template instances. +- Issue #22619: Added negative limit support in the traceback module. + Based on patch by Dmitry Kazakov. -- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter - doc. Remove obsolete example from FAQ. Patch by Martin Panter. +- Issue #24094: Fix possible crash in json.encode with poorly behaved dict + subclasses. -- Issue #24029: Document the name binding behavior for submodule imports. +- Issue #9246: On POSIX, os.getcwd() now supports paths longer than 1025 bytes. + Patch written by William Orr. -- Issue #24077: Fix typo in man page for -I command option: -s, not -S. +- Issue #17445: add difflib.diff_bytes() to support comparison of + byte strings (fixes a regression from Python 2). -Tools/Demos ------------ +- Issue #23917: Fall back to sequential compilation when ProcessPoolExecutor + doesn't exist. Patch by Claudiu Popa. -- Issue #23330: h2py now supports arbitrary filenames in #include. +- Issue #23008: Fixed resolving attributes with boolean value is False in pydoc. -- Issue #24031: make patchcheck now supports git checkouts, too. +- Fix asyncio issue 235: LifoQueue and PriorityQueue's put didn't + increment unfinished tasks (this bug was introduced when + JoinableQueue was merged with Queue). +- Issue #23908: os functions now reject paths with embedded null character + on Windows instead of silently truncate them. -What's New in Python 3.4.3? -=========================== +- Issue #23728: binascii.crc_hqx() could return an integer outside of the range + 0-0xffff for empty data. -Release date: 2015-02-23 +- Issue #23887: urllib.error.HTTPError now has a proper repr() representation. + Patch by Berker Peksag. -Core and Builtins ------------------ +- asyncio: New event loop APIs: set_task_factory() and get_task_factory(). -- Issue #22735: Fix many edge cases (including crashes) involving custom mro() - implementations. +- asyncio: async() function is deprecated in favour of ensure_future(). -- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer() - and PyObject_AsWriteBuffer(). +- Issue 24178: asyncio.Lock, Condition, Semaphore, and BoundedSemaphore + support new 'async with' syntax. Contributed by Yury Selivanov. -- Issue #21295: Revert some changes (issue #16795) to AST line numbers and - column offsets that constituted a regression. +- Issue 24179: Support 'async for' for asyncio.StreamReader. + Contributed by Yury Selivanov. -- Issue #21408: The default __ne__() now returns NotImplemented if __eq__() - returned NotImplemented. Original patch by Martin Panter. +- Issue 24184: Add AsyncIterator and AsyncIterable ABCs to + collections.abc. Contributed by Yury Selivanov. -- Issue #23321: Fixed a crash in str.decode() when error handler returned - replacment string longer than mailformed input data. +- Issue 22547: Implement informative __repr__ for inspect.BoundArguments. + Contributed by Yury Selivanov. -- Issue #23048: Fix jumping out of an infinite while loop in the pdb. +- Issue 24190: Implement inspect.BoundArgument.apply_defaults() method. + Contributed by Yury Selivanov. -- Issue #20335: bytes constructor now raises TypeError when encoding or errors - is specified with non-string argument. Based on patch by Renaud Blanch. +- Issue 20691: Add 'follow_wrapped' argument to + inspect.Signature.from_callable() and inspect.signature(). + Contributed by Yury Selivanov. -- Issue #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff - bytes on a 32-bit platform. +- Issue 24248: Deprecate inspect.Signature.from_function() and + inspect.Signature.from_builtin(). -- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant - dict insertion in debug mode. +- Issue #23898: Fix inspect.classify_class_attrs() to support attributes + with overloaded __eq__ and __bool__. Patch by Mike Bayer. -- Issue #22643: Fix integer overflow in Unicode case operations (upper, lower, - title, swapcase, casefold). +- Issue #24298: Fix inspect.signature() to correctly unwrap wrappers + around bound methods. -- Issue #22604: Fix assertion error in debug mode when dividing a complex - number by (nan+0j). +IDLE +---- -- Issue #22470: Fixed integer overflow issues in "backslashreplace", - "xmlcharrefreplace", and "surrogatepass" error handlers. +- Issue #23184: remove unused names and imports in idlelib. + Initial patch by Al Sweigart. -- Issue #22520: Fix overflow checking when generating the repr of a unicode - object. +Tests +----- -- Issue #22519: Fix overflow checking in PyBytes_Repr. +- Issue #21520: test_zipfile no longer fails if the word 'bad' appears + anywhere in the name of the current directory. -- Issue #22518: Fix integer overflow issues in latin-1 encoding. +- Issue #9517: Move script_helper into the support package. + Patch by Christie Wilson. -- Issue #23165: Perform overflow checks before allocating memory in the - _Py_char2wchar function. +Documentation +------------- -Library -------- +- Issue #22155: Add File Handlers subsection with createfilehandler to tkinter + doc. Remove obsolete example from FAQ. Patch by Martin Panter. -- Issue #23399: pyvenv creates relative symlinks where possible. +- Issue #24029: Document the name binding behavior for submodule imports. -- Issue #23099: Closing io.BytesIO with exported buffer is rejected now to - prevent corrupting exported buffer. +- Issue #24077: Fix typo in man page for -I command option: -s, not -S -- Issue #23363: Fix possible overflow in itertools.permutations. +Tools/Demos +----------- -- Issue #23364: Fix possible overflow in itertools.product. +- Issue #24000: Improved Argument Clinic's mapping of converters to legacy + "format units". Updated the documentation to match. -- Issue #23366: Fixed possible integer overflow in itertools.combinations. +- Issue #24001: Argument Clinic converters now use accept={type} + instead of types={'type'} to specify the types the converter accepts. -- Issue #23369: Fixed possible integer overflow in - _json.encode_basestring_ascii. +- Issue #23330: h2py now supports arbitrary filenames in #include. -- Issue #23353: Fix the exception handling of generators in - PyEval_EvalFrameEx(). At entry, save or swap the exception state even if - PyEval_EvalFrameEx() is called with throwflag=0. At exit, the exception state - is now always restored or swapped, not only if why is WHY_YIELD or - WHY_RETURN. Patch co-written with Antoine Pitrou. +- Issue #24031: make patchcheck now supports git checkouts, too. -- Issue #18518: timeit now rejects statements which can't be compiled outside - a function or a loop (e.g. "return" or "break"). -- Issue #23094: Fixed readline with frames in Python implementation of pickle. +What's New in Python 3.5.0 alpha 4? +=================================== -- Issue #23268: Fixed bugs in the comparison of ipaddress classes. +Release date: 2015-04-19 -- Issue #21408: Removed incorrect implementations of __ne__() which didn't - returned NotImplemented if __eq__() returned NotImplemented. The default - __ne__() now works correctly. +Core and Builtins +----------------- -- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed) - headers with no key rather than assuming the body has started. +- 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 #23248: Update ssl error codes from latest OpenSSL git master. +- Issue #22631: Added Linux-specific socket constant CAN_RAW_FD_FRAMES. + Patch courtesy of Joe Jevnik. -- Issue #23098: 64-bit dev_t is now supported in the os module. +- Issue #23731: Implement PEP 488: removal of .pyo files. -- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure" - as they are written in the standard. +- 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 #23063: In the disutils' check command, fix parsing of reST with code or - code-block directives. +- 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 #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 #22977: Fixed formatting Windows error messages on Wine. + Patch by Martin Panter. -- 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 #23466: %c, %o, %x, and %X in bytes formatting now raise TypeError on + non-integer input. -- 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 #24044: Fix possible null pointer dereference in list.sort in out of + memory conditions. -- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol - version. +- Issue #21354: PyCFunction_New function is exposed by python DLL again. -- Issue #23132: Mitigate regression in speed and clarity in functools.total_ordering. +Library +------- -- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), - instead of reading /dev/urandom, to get pseudo-random bytes. +- Issue #23840: tokenize.open() now closes the temporary binary file on error + to fix a resource warning. -- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and - fragment when it redirects to add a trailing slash. +- Issue #16914: new debuglevel 2 in smtplib adds timestamps to debug output. -- Issue #23093: In the io, module allow more operations to work on detached - streams. +- 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 #19104: pprint now produces evaluable output for wrapped strings. +- Issue #23703: Fix a regression in urljoin() introduced in 901e4e52b20a. + Patch by Demian Brecht. -- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter. +- Issue #4254: Adds _curses.update_lines_cols() Patch by Arnon Yaari -- Issue #15513: Added a __sizeof__ implementation for pickle classes. +- Issue 19933: Provide default argument for ndigits in round. Patch by + Vajrasky Kok. -- Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can - produce more compact result and no longer produces invalid output if input - data contains MEMOIZE opcodes together with PUT or BINPUT opcodes. +- Issue #23193: Add a numeric_owner parameter to + tarfile.TarFile.extract and tarfile.TarFile.extractall. Patch by + Michael Vogt and Eric Smith. -- Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port - value in the host header was set to "None". Patch by Demian Brecht. +- Issue #23342: Add a subprocess.run() function than returns a CalledProcess + instance for a more consistent API than the existing call* functions. -- Issue #23016: A warning no longer produces an AttributeError when the program - is run with pythonw.exe. +- 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 #21775: shutil.copytree(): fix crash when copying to VFAT. An exception - handler assumed that that OSError objects always have a 'winerror' attribute. - That is not the case, so the exception handler itself raised AttributeError - when run on Linux (and, presumably, any other non-Windows OS). - Patch by Greg Ward. +- Issue #24521: Fix possible integer overflows in the pickle module. -- Issue #1218234: Fix inspect.getsource() to load updated source of - reloaded module. Initial patch by Berker Peksag. +- Issue #22931: Allow '[' and ']' in cookie values. -- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the - context's check_hostname attribute over the *check_hostname* parameter. +- The keywords attribute of functools.partial is now always a dictionary. -- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode - will return. This resolves CVE-2013-1753. +- Issue #23811: Add missing newline to the PyCompileError error message. + Patch by Alex Shkop. -- Issue #22966: Fix __pycache__ pyc file name clobber when pyc_compile is - asked to compile a source file containing multiple dots in the source file - name. +- Issue #21116: Avoid blowing memory when allocating a multiprocessing shared + array that's larger than 50% of the available RAM. Patch by Médéric Boquien. -- Issue #21971: Update turtledemo doc and add module to the index. +- Issue #22982: Improve BOM handling when seeking to multiple positions of + a writable text file. -- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails. - Original patch by Martin Panter. +- Issue #23464: Removed deprecated asyncio JoinableQueue. -- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor. +- 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 #22915: SAX parser now supports files opened with file descriptor or - bytes path. +- Issue #21859: Added Python implementation of io.FileIO. -- Issue #22609: Constructors and update methods of mapping classes in the - collections module now accept the self keyword argument. +- 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 #22788: Add *context* parameter to logging.handlers.HTTPHandler. +- Issue #23400: Raise same exception on both Python 2 and 3 if sem_open is not + available. Patch by Davin Potts. -- Issue #22921: Allow SSLContext to take the *hostname* parameter even if - OpenSSL doesn't support SNI. +- 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 #22894: TestCase.subTest() would cause the test suite to be stopped - when in failfast mode, even in the absence of failures. +- Issue #23411: Added DefragResult, ParseResult, SplitResult, DefragResultBytes, + ParseResultBytes, and SplitResultBytes to urllib.parse.__all__. + Patch by Martin Panter. -- Issue #22638: SSLv3 is now disabled throughout the standard library. - It can still be enabled by instantiating a SSLContext manually. +- Issue #23881: urllib.request.ftpwrapper constructor now closes the socket if + the FTP connection failed to fix a ResourceWarning. -- Issue #22370: Windows detection in pathlib is now more robust. +- 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 #22841: Reject coroutines in asyncio add_signal_handler(). - Patch by Ludovic.Gasc. +- 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 #22849: Fix possible double free in the io.TextIOWrapper constructor. +- 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 #12728: Different Unicode characters having the same uppercase but - different lowercase are now matched in case-insensitive regular expressions. +- Issue #10590: xml.sax.parseString() now supports string argument. -- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian - platforms. +- Issue #23338: Fixed formatting ctypes error messages on Cygwin. + Patch by Makoto Kato. -- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x. - Based on patch by Martin Panter. +- Issue #15582: inspect.getdoc() now follows inheritance chains. -- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat. - Based on patch by Aivars Kalvāns. +- Issue #2175: SAX parsers now support a character stream of InputSource object. -- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments. +- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and + arbitrary precision integers added in Tcl 8.5. -- Issue #22417: Verify certificates by default in httplib (PEP 476). +- 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 #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2 - and above. Patch by Tim Graham. +- 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 #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 #21526: Tkinter now supports new boolean type in Tcl 8.5. -- Issue #22776: Brought excluded code into the scope of a try block in - SysLogHandler.emit(). +- Issue #23836: Fix the faulthandler module to handle reentrant calls to + its signal handlers. -- Issue #22665: Add missing get_terminal_size and SameFileError to - shutil.__all__. +- Issue #23838: linecache now clears the cache and returns an empty result on + MemoryError. -- Issue #17381: Fixed handling of case-insensitive ranges in regular - expressions. +- Issue #10395: Added os.path.commonpath(). Implemented in posixpath and ntpath. + Based on patch by Rafik Draoui. -- Issue #22410: Module level functions in the re module now cache compiled - locale-dependent regular expressions taking into account the locale. +- Issue #23611: Serializing more "lookupable" objects (such as unbound methods + or nested classes) now are supported with pickle protocols < 4. -- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.) - now return False when the underlying stat call raises NotADirectoryError. +- Issue #13583: sqlite3.Row now supports slice indexing. -- Issue #8876: distutils now falls back to copying files when hard linking - doesn't work. This allows use with special filesystems such as VirtualBox - shared folders. +- Issue #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 #18853: Fixed ResourceWarning in shlex.__nain__. +- 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 #9351: Defaults set with set_defaults on an argparse subparser - are no longer ignored when also set on the parent parser. +- 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 #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 #23704: collections.deque() objects now support __add__, __mul__, and + __imul__(). -- Issue #22641: In asyncio, the default SSL context for client connections - is now created using ssl.create_default_context(), for stronger security. +- Issue #23171: csv.Writer.writerow() now supports arbitrary iterables. -- Issue #22435: Fix a file descriptor leak when SocketServer bind fails. +- Issue #23745: The new email header parser now handles duplicate MIME + parameter names without error, similar to how get_param behaves. -- Issue #13096: Fixed segfault in CTypes POINTER handling of large - values. +- Issue #22117: Fix os.utime(), it now rounds the timestamp towards minus + infinity (-inf) instead of rounding towards zero. -- Issue #11694: Raise ConversionError in xdrlib as documented. Patch - by Filip Gruszczyński and Claudiu Popa. +- Issue #23310: Fix MagicMock's initializer to work with __methods__, just + like configure_mock(). Patch by Kasia Jachim. -- Issue #22462: Fix pyexpat's creation of a dummy frame to make it - appear in exception tracebacks. +Build +----- -- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called - with an iterator alive. +- Issue #23817: FreeBSD now uses "1.0" the the SOVERSION as other operating + systems, instead of just "1". -- Issue #11866: Eliminated race condition in the computation of names - for new threads. +- Issue #23501: Argument Clinic now generates code into separate files by default. -- Issue #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules - is mutated while iterating. Patch by Olivier Grisel. +Tests +----- -- Issue #22219: The zipfile module CLI now adds entries for directories - (including empty directories) in ZIP file. +- Issue #23799: Added test.support.start_threads() for running and + cleaning up multiple threads. -- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the - environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows. +- Issue #22390: test.regrtest now emits a warning if temporary files or + directories are left after running a test. -- Issue #20076: Added non derived UTF-8 aliases to locale aliases table. +Tools/Demos +----------- -- Issue #20079: Added locales supported in glibc 2.18 to locale alias table. +- Issue #18128: pygettext now uses standard +NNNN format in the + POT-Creation-Date header. -- 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 #23935: Argument Clinic's understanding of format units + accepting bytes, bytearrays, and buffers is now consistent with + both the documentation and the implementation. -- Issue #22517: When a io.BufferedRWPair object is deallocated, clear its - weakrefs. +- Issue #23944: Argument Clinic now wraps long impl prototypes at column 78. -- Issue #22448: Improve canceled timer handles cleanup to prevent - unbound memory usage. Patch by Joshua Moore-Oliva. +- Issue #20586: Argument Clinic now ensures that functions without docstrings + have signatures. -- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no - FD is registered. +- Issue #23492: Argument Clinic now generates argument parsing code with + PyArg_Parse instead of PyArg_ParseTuple if possible. -IDLE ----- +- 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. -- 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. +C API +----- -- Issue #16893: Update Idle doc chapter to match current Idle and add new - information. +- Issue #23998: PyImport_ReInitLock() now checks for lock allocation error -- 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. +What's New in Python 3.5.0 alpha 3? +=================================== -- 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. +Release date: 2015-03-28 -- Issue #21986: Code objects are not normally pickled by the pickle module. - To match this, they are no longer pickled when running under Idle. +Core and Builtins +----------------- -- Issue #23180: Rename IDLE "Windows" menu item to "Window". - Patch by Al Sweigart. +- 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). -Tests ------ +- Issue #23753: Python doesn't support anymore platforms without stat() or + fstat(), these functions are always required. -- Issue #23392: Added tests for marshal C API that works with FILE*. +- Issue #23681: The -b option now affects comparisons of bytes with int. -- Issue #18982: Add tests for CLI of the calendar module. +- Issue #23632: Memoryviews now allow tuple indexing (including for + multi-dimensional memoryviews). -- Issue #19548: Added some additional checks to test_codecs to ensure that - statements in the updated documentation remain accurate. Patch by Martin - Panter. +- Issue #23192: Fixed generator lambdas. Patch by Bruno Cauet. -- Issue #22838: All test_re tests now work with unittest test discovery. +- Issue #23629: Fix the default __sizeof__ implementation for variable-sized + objects. -- Issue #22173: Update lib2to3 tests to use unittest test discovery. +Library +------- -- Issue #16000: Convert test_curses to use unittest. +- Issue #14260: The groupindex attribute of regular expression pattern object + now is non-modifiable mapping. -- Issue #21456: Skip two tests in test_urllib2net.py if _ssl module not - present. Patch by Remi Pointel. +- 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 #22770: Prevent some Tk segfaults on OS X when running gui tests. +- Issue #23775: pprint() of OrderedDict now outputs the same representation + as repr(). -- Issue #23211: Workaround test_logging failure on some OS X 10.6 systems. +- Issue #23765: Removed IsBadStringPtr calls in ctypes -- Issue #23345: Prevent test_ssl failures with large OpenSSL patch level - values (like 0.9.8zc). +- Issue #22364: Improved some re error messages using regex for hints. -- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout. +- Issue #23742: ntpath.expandvars() no longer loses unbalanced single quotes. -Build ------ +- Issue #21717: The zipfile.ZipFile.open function now supports 'x' (exclusive + creation) mode. -- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure - script. +- Issue #21802: The reader in BufferedRWPair now is closed even when closing + writer failed in BufferedRWPair.close(). -- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support - SSL 3. +- 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 #16537: Check whether self.extensions is empty in setup.py. Patch by - Jonathan Hosmer. +- 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 #18096: Fix library order returned by python-config. +- Issue #23502: The pprint module now supports mapping proxies. -- Issue #17219: Add library build dir for Python extension cross-builds. +- Issue #17530: pprint now wraps long bytes objects and bytearrays. -- Issue #17128: Use private version of OpenSSL for 3.4.3 OS X 10.5+ installer. +- Issue #22687: Fixed some corner cases in breaking words in tetxtwrap. + Got rid of quadratic complexity in breaking long words. -C API ------ +- 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 #22079: PyType_Ready() now checks that statically allocated type has - no dynamically allocated bases. +- 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). -Documentation -------------- +- Issue #23657: Avoid explicit checks for str in zipapp, adding support + for pathlib.Path objects as arguments. -- 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 #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 #22914: Update the Python 2/3 porting HOWTO to describe a more automated - approach. ++- Issue #23252: Added support for writing ZIP files to unseekable streams. -- Issue #21514: The documentation of the json module now refers to new JSON RFC - 7159 instead of obsoleted RFC 4627. +- Issue #23647: Increase impalib's MAXLINE to accommodate modern mailbox sizes. -Tools/Demos ------------ +- Issue #23539: If body is None, http.client.HTTPConnection.request now sets + Content-Length to 0 for PUT, POST, and PATCH headers to avoid 411 errors from + some web servers. -- Issue #22314: pydoc now works when the LINES environment variable is set. +- Issue #22351: The nntplib.NNTP constructor no longer leaves the connection + and socket open until the garbage collector cleans them up. Patch by + Martin Panter. -Windows -------- +- 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 #17896: The Windows build scripts now expect external library sources - to be in ``PCbuild\..\externals`` rather than ``PCbuild\..\..``. +- 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 #17717: The Windows build scripts now use a copy of NASM pulled from - svn.python.org to build OpenSSL. +- 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 #22644: The bundled version of OpenSSL has been updated to 1.0.1j. +- 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. -What's New in Python 3.4.2? -=========================== +- Issue #23700: Iterator of NamedTemporaryFile now keeps a reference to + NamedTemporaryFile instance. Patch by Bohuslav Kabrda. -Release date: 2014-10-06 +- Issue #22903: The fake test case created by unittest.loader when it fails + importing a test module is now picklable. -Library -------- +- 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 #10510: distutils register and upload methods now use HTML standards - compliant CRLF line endings. +- Issue #18983: Allow selection of output units in timeit. + Patch by Julian Gindi. -- Issue #9850: Fixed macpath.join() for empty first component. Patch by - Oleg Oshmyan. +- Issue #23631: Fix traceback.format_list when a traceback has been mutated. -- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when - used in the with statement in generator. +- Issue #23568: Add rdivmod support to MagicMock() objects. + Patch by Håkan Lövdahl. -- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS - directory attributes. +- Issue #2052: Add charset parameter to HtmlDiff.make_file(). -- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory - records if allowZip64 is false. +- Issue #23668: Support os.truncate and os.ftruncate on Windows. -- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re - module. Removed trailing spaces in debugging output. +- Issue #23138: Fixed parsing cookies with absent keys or values in cookiejar. + Patch by Demian Brecht. -- Issue #22423: Unhandled exception in thread no longer causes unhandled - AttributeError when sys.stderr is None. +- Issue #23051: multiprocessing.Pool methods imap() and imap_unordered() now + handle exceptions raised by an iterator. Patch by Alon Diamant and Davin + Potts. -- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects - line buffering, rather than block buffering. Patch by Akira Li. +- 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. -What's New in Python 3.4.2rc1? -============================== +- Issue #22928: Disabled HTTP header injections in http.client. + Original patch by Demian Brecht. -Release date: 2014-09-22 +- Issue #23615: Modules bz2, tarfile and tokenize now can be reloaded with + imp.reload(). Patch by Thomas Kluyver. -Core and Builtins ------------------ +- 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. -- 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``). +Build +----- -- 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 #23585: make patchcheck will ensure the interpreter is built. -- 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. +Tests +----- -- 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 #23583: Added tests for standard IO streams in IDLE. -Library -------- +- Issue #22289: Prevent test_urllib2net failures due to ftp connection timeout. -- 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. +Tools/Demos +----------- -- Issue #21079: Fix email.message.EmailMessage.is_attachment to return the - correct result when the header has parameters as well as a value. +- 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). -- Issue #22247: Add NNTPError to nntplib.__all__. -- Issue #4180: The warnings registries are now reset when the filters - are modified. +What's New in Python 3.5 alpha 2? +================================= -- Issue #22419: Limit the length of incoming HTTP request in wsgiref server to - 65536 bytes and send a 414 error code for higher lengths. Patch contributed - by Devin Cook. +Release date: 2015-03-09 -- Lax cookie parsing in http.cookies could be a security issue when combined - with non-standard cookie handling in some Web browsers. Reported by - Sergey Bobrov. +Core and Builtins +----------------- -- Issue #22384: An exception in Tkinter callback no longer crashes the program - when it is run with pythonw.exe. +- 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. -- Issue #22168: Prevent turtle AttributeError with non-default Canvas on OS X. +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 #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 #21951: Fixed a crash in Tkinter on AIX when called Tcl command with - empty string or tuple argument. +- Issue #23103: Reduced the memory consumption of IPv4Address and IPv6Address. -- Issue #21951: Tkinter now most likely raises MemoryError instead of crash - if the memory allocation fails. +- Issue #21793: BaseHTTPRequestHandler again logs response code as numeric, + not as stringified enum. Patch by Demian Brecht. -- Issue #22338: Fix a crash in the json module on memory allocation failure. +- Issue #23476: In the ssl module, enable OpenSSL's X509_V_FLAG_TRUSTED_FIRST + flag on certificate stores when it is available. -- Issue #22226: First letter no longer is stripped from the "status" key in - the result of Treeview.heading(). +- Issue #23576: Avoid stalling in SSL reads when EOF has been reached in the + SSL layer but the underlying connection hasn't been closed. -- Issue #19524: Fixed resource leak in the HTTP connection when an invalid - response is received. Patch by Martin Panter. +- Issue #23504: Added an __all__ to the types module. -- 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. +- Issue #23563: Optimized utility functions in urllib.parse. -- Issue #21933: Turtledemo users can change the code font size with a menu - selection or control(command) '-' or '+' or control-mousewheel. - Original patch by Lita Cho. +- Issue #7830: Flatten nested functools.partial. -- Issue #21597: The separator between the turtledemo text pane and the drawing - canvas can now be grabbed and dragged with a mouse. The code text pane can - be widened to easily view or copy the full width of the text. The canvas - can be widened on small screens. Original patches by Jan Kanis and Lita Cho. +- Issue #20204: Added the __module__ attribute to _tkinter classes. -- Issue #18132: Turtledemo buttons no longer disappear when the window is - shrunk. Original patches by Jan Kanis and Lita Cho. +- 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 #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 #23521: Corrected pure python implementation of timedelta division. -- 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. + * Eliminated OverflowError from timedelta * float for some floats; + * Corrected rounding in timedlta true division. -- Issue #22182: Use e.args to unpack exceptions correctly in - distutils.file_util.move_file. Patch by Claudiu Popa. +- Issue #21619: Popen objects no longer leave a zombie after exit in the with + statement if the pipe was broken. Patch by Martin Panter. -- The webbrowser module now uses subprocess's start_new_session=True rather - than a potentially risky preexec_fn=os.setsid call. +- Issue #22936: Make it possible to show local variables in tracebacks for + both the traceback module and unittest. -- Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode. +- Issue #15955: Add an option to limit the output size in bz2.decompress(). + Patch by Nikolaus Rath. -- Issue #22191: Fix warnings.__all__. +- Issue #6639: Module-level turtle functions no longer raise TclError after + closing the window. -- Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows. +- Issues #814253, #9179: Group references and conditional group references now + work in lookbehind assertions in regular expressions. -- Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter. +- Issue #23215: Multibyte codecs with custom error handlers that ignores errors + consumed too much memory and raised SystemError or MemoryError. + Original patch by Aleksi Torhamo. -- Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names. +- Issue #5700: io.FileIO() called flush() after closing the file. + flush() was not called in close() if closefd=False. -- Issue #8797: Raise HTTPError on failed Basic Authentication immediately. - Initial patch by Sam Bull. +- Issue #23374: Fixed pydoc failure with non-ASCII files when stdout encoding + differs from file system encoding (e.g. on Mac OS). -- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems() - in the mailbox module. +- Issue #23481: Remove RC4 from the SSL module's default cipher list. -- Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when - parsing long line. Original patch by Raymond Hettinger. +- Issue #21548: Fix pydoc.synopsis() and pydoc.apropos() on modules with empty + docstrings. -- Issue #22184: The functools LRU Cache decorator factory now gives an earlier - and clearer error message when the user forgets the required parameters. +- Issue #22885: Fixed arbitrary code execution vulnerability in the dbm.dumb + module. Original patch by Claudiu Popa. -- Issue #17923: glob() patterns ending with a slash no longer match non-dirs on - AIX. Based on patch by Delhallt. +- Issue #23239: ssl.match_hostname() now supports matching of IP addresses. -- Issue #21121: Don't force 3rd party C extensions to be built with - -Werror=declaration-after-statement. +- Issue #23146: Fix mishandling of absolute Windows paths with forward + slashes in pathlib. -- Issue #21975: Fixed crash when using uninitialized sqlite3.Row (in particular - when unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the - __new__() method. +- Issue #23096: Pickle representation of floats with protocol 0 now is the same + for both Python and C implementations. -- Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk. - In particular this allows to initialize images from binary data. +- Issue #19105: pprint now more efficiently uses free space at the right. -- Issue #17172: Make turtledemo start as active on OS X even when run with - subprocess. Patch by Lita Cho. +- Issue #14910: Add allow_abbrev parameter to argparse.ArgumentParser. Patch by + Jonathan Paugh, Steven Bethard, paul j3 and Daniel Eriksson. -- Issue #21704: Fix build error for _multiprocessing when semaphores - are not available. Patch by Arfrever Frehtes Taifersar Arahesis. +- Issue #21717: tarfile.open() now supports 'x' (exclusive creation) mode. -- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError - on closed socket. repr(socket.socket) already works fine. +- Issue #23344: marshal.dumps() is now 20-25% faster on average. -- Issue #16133: The asynchat.async_chat.handle_read() method now ignores - BlockingIOError exceptions. +- Issue #20416: marshal.dumps() with protocols 3 and 4 is now 40-50% faster on + average. -- Issue #22044: Fixed premature DECREF in call_tzinfo_method. - Patch by Tom Flanagan. +- Issue #23421: Fixed compression in tarfile CLI. Patch by wdv4758h. -- Issue #19884: readline: Disable the meta modifier key if stdout is not - a terminal to not write the ANSI sequence "\033[1034h" into stdout. This - sequence is used on some terminal (ex: TERM=xterm-256color") to enable - support of 8 bit characters. +- Issue #23367: Fix possible overflows in the unicodedata module. -- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is - specified. +- Issue #23361: Fix possible overflow in Windows subprocess creation code. -- Issue #21044: tarfile.open() now handles fileobj with an integer 'name' - attribute. Based on patch by Antoine Pietri. +- 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 #21867: Prevent turtle crash due to invalid undo buffer size. +- Issue #19705: turtledemo now has a visual sorting algorithm demo. Original + patch from Jason Yeo. -- Issue #19076: Don't pass the redundant 'file' argument to self.error(). +- Issue #23801: Fix issue where cgi.FieldStorage did not always ignore the + entire preamble to a multipart body. -- Issue #21942: Fixed source file viewing in pydoc's server mode on Windows. +Build +----- -- Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError - if the number of received bytes is negative. +- Issue #23445: pydebug builds now use "gcc -Og" where possible, to make + the resulting executable faster. -- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't - get a bytes string +- Issue #23686: Update OS X 10.5 installer build to use OpenSSL 1.0.2a. -- Issue #21707: Add missing kwonlyargcount argument to - ModuleFinder.replace_paths_in_code(). +C API +----- -- Issue #20639: calling Path.with_suffix('') allows removing the suffix - again. Patch by July Tikhonov. +- Issue #20204: Deprecation warning is now raised for builtin type without the + __module__ attribute. -- Issue #21714: Disallow the construction of invalid paths using - Path.with_name(). Original patch by Antony Lee. +Windows +------- -- Issue #21897: Fix a crash with the f_locals attribute with closure - variables when frame.clear() has been called. +- Issue #23465: Implement PEP 486 - Make the Python Launcher aware of virtual + environments. Patch by Paul Moore. -- Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed - as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman. +- Issue #23437: Make user scripts directory versioned on Windows. Patch by Paul + Moore. -- 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 #21781: ssl.RAND_add() now supports strings longer than 2 GB. +What's New in Python 3.5 alpha 1? +================================= -- 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. +Release date: 2015-02-08 -- Issue #21858: Better handling of Python exceptions in the sqlite3 module. +Core and Builtins +----------------- -- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is - discarded after parsing, so the input file isn't unexpectedly closed. +- Issue #23285: PEP 475 - EINTR handling. -- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure - files closing. Patch by Claudiu Popa. +- Issue #22735: Fix many edge cases (including crashes) involving custom mro() + implementations. -- Issue #21491: socketserver: Fix a race condition in child processes reaping. +- Issue #22896: Avoid using PyObject_AsCharBuffer(), PyObject_AsReadBuffer() + and PyObject_AsWriteBuffer(). -- Issue #21832: Require named tuple inputs to be exact strings. +- Issue #21295: Revert some changes (issue #16795) to AST line numbers and + column offsets that constituted a regression. -- 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 #22986: Allow changing an object's __class__ between a dynamic type and + static type in some cases. -- Issue #21812: turtle.shapetransform did not tranform the turtle on the - first call. (Issue identified and fixed by Lita Cho.) +- 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 #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 #21408: The default __ne__() now returns NotImplemented if __eq__() + returned NotImplemented. Original patch by Martin Panter. -- Issue #21722: The distutils "upload" command now exits with a non-zero - return code when uploading fails. Patch by Martin Dengler. +- Issue #23321: Fixed a crash in str.decode() when error handler returned + replacment string longer than mailformed input data. -- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the - maximum size. Patch written by Vajrasky Kok. +- Issue #22286: The "backslashreplace" error handlers now works with + decoding and translating. -- 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 #23253: Delay-load ShellExecute[AW] in os.startfile for reduced + startup overhead on Windows. -- 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 #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 #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths - before checking for a CGI script at that path. +- Issue #20284: %-interpolation (aka printf) formatting added for bytes and + bytearray. -- Issue #21310: Fixed possible resource leak in failed open(). +- Issue #23048: Fix jumping out of an infinite while loop in the pdb. -- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods. +- Issue #20335: bytes constructor now raises TypeError when encoding or errors + is specified with non-string argument. Based on patch by Renaud Blanch. -- Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a - valid file. +- Issue #22834: If the current working directory ends up being set to a + non-existent directory then import will no longer raise FileNotFoundError. -- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods - that use 'self' in the example code is generated correctly. +- Issue #22869: Move the interpreter startup & shutdown code to a new + dedicated pylifecycle.c module -- Issue #21463: In urllib.request, fix pruning of the FTP cache. +- Issue #22847: Improve method cache efficiency. -- Issue #21618: The subprocess module could fail to close open fds that were - inherited by the calling process and already higher than POSIX resource - 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 #22335: Fix crash when trying to enlarge a bytearray to 0x7fffffff + bytes on a 32-bit platform. -- Issue #21552: Fixed possible integer overflow of too long string lengths in - the tkinter module on 64-bit platforms. +- Issue #22653: Fix an assertion failure in debug mode when doing a reentrant + dict insertion in debug mode. -- Issue #14315: The zipfile module now ignores extra fields in the central - directory that are too short to be parsed instead of letting a struct.unpack - 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 #22643: Fix integer overflow in Unicode case operations (upper, lower, + title, swapcase, casefold). -- Issue #21402: tkinter.ttk now works when default root window is not set. +- Issue #17636: Circular imports involving relative imports are now + supported. -- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particulr - it supports reverse() and negative indices. Original patch by Claudiu Popa. - -- Issue #18807: If copying (no symlinks) specified for a venv, then the python - interpreter aliases (python, python3) are now created by copying rather than - symlinking. +- Issue #22604: Fix assertion error in debug mode when dividing a complex + number by (nan+0j). -- Issue #14710: pkgutil.get_loader() no longer raises an exception when None is - found in sys.modules. +- Issue #21052: Do not raise ImportWarning when sys.path_hooks or sys.meta_path + are set to None. -- Issue #14710: pkgutil.find_loader() no longer raises an exception when a - module doesn't exist. +- 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 #21481: Argparse equality and inequality tests now return - NotImplemented when comparing to an unknown type. +- Issue #22470: Fixed integer overflow issues in "backslashreplace", + "xmlcharrefreplace", and "surrogatepass" error handlers. -- Issue #8743: Fix interoperability between set objects and the - collections.Set() abstract base class. +- Issue #22540: speed up `PyObject_IsInstance` and `PyObject_IsSubclass` in the + common case that the second argument has metaclass `type`. -- Issue #13355: random.triangular() no longer fails with a ZeroDivisionError - when low equals high. +- Issue #18711: Add a new `PyErr_FormatV` function, similar to `PyErr_Format` + but accepting a `va_list` argument. -- Issue #21538: The plistlib module now supports loading of binary plist files - when reference or offset size is not a power of two. +- Issue #22520: Fix overflow checking when generating the repr of a unicode + object. -- Issue #21801: Validate that __signature__ is None or an instance of Signature. +- Issue #22519: Fix overflow checking in PyBytes_Repr. -- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler - due to possible uninitialized _config_vars. +- Issue #22518: Fix integer overflow issues in latin-1 encoding. -- 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 #16324: _charset parameter of MIMEText now also accepts + email.charset.Charset instances. Initial patch by Claude Paroz. -Extension Modules ------------------ +- Issue #1764286: Fix inspect.getsource() to support decorated functions. + Patch by Claudiu Popa. -- 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 #18554: os.__all__ includes posix functions. -Build ------ +- Issue #21391: Use os.path.abspath in the shutil module. -- Issue #15661: python.org OS X installers are now distributed as signed - installer packages compatible with the Gatekeeper security feature. +- 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 #21958: Define HAVE_ROUND when building with Visual Studio 2013 and - above. Patch by Zachary Turner. +- Issue #22215: Now ValueError is raised instead of TypeError when str or bytes + argument contains not permitted null character or byte. -- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/ - now display special message when and only when there are failures. +- 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 #17095: Fix Modules/Setup *shared* support. +- Issue #21389: Displaying the __qualname__ of the underlying function in the + repr of a bound method. -- Issue #21811: Anticipated fixes to support OS X versions > 10.9. +- Issue #22206: Using pthread, PyThread_create_key() now sets errno to ENOMEM + and returns -1 (error) on integer overflow. -- Issue #21166: Prevent possible segfaults and other random failures of - python --generate-posix-vars in pybuilddir.txt build target. +- Issue #20184: Argument Clinic based signature introspection added for + 30 of the builtin functions. -IDLE ----- +- Issue #22116: C functions and methods (of the 'builtin_function_or_method' + type) can now be weakref'ed. Patch by Wei Wu. -- Issue #17390: Adjust Editor window title; remove 'Python', - move version to end. +- Issue #22077: Improve index error messages for bytearrays, bytes, lists, + and tuples by adding 'or slices'. Added ', not 0. Patch by Demian Brecht. -- Issue #22201: Command-line interface of the zipfile module now correctly - extracts ZIP files with directory entries. Patch by Ryan Wilson. +- Issue #15381: Optimized io.BytesIO to make less allocations and copyings. -- Issue #21906: Make Tools/scripts/md5sum.py work in Python 3. - Patch by Zachary Ware. +- 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 #21629: Fix Argument Clinic's "--converters" feature. +- 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. -What's New in Python 3.4.1? -=========================== +- Issue #23363: Fix possible overflow in itertools.permutations. -Release date: 2014-05-18 +- Issue #23364: Fix possible overflow in itertools.product. -Core and Builtins ------------------ +- Issue #23366: Fixed possible integer overflow in itertools.combinations. -- Issue #21418: Fix a crash in the builtin function super() when called without - argument and without current frame (ex: embedded Python). +- Issue #23369: Fixed possible integer overflow in + _json.encode_basestring_ascii. -- Issue #21425: Fix flushing of standard streams in the interactive - interpreter. +- Issue #23353: Fix the exception handling of generators in + PyEval_EvalFrameEx(). At entry, save or swap the exception state even if + PyEval_EvalFrameEx() is called with throwflag=0. At exit, the exception state + is now always restored or swapped, not only if why is WHY_YIELD or + WHY_RETURN. Patch co-written with Antoine Pitrou. -- Issue #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 #14099: Restored support of writing ZIP files to tellable but + non-seekable streams. -Library -------- +- Issue #14099: Writing to ZipFile and reading multiple ZipExtFiles is + threadsafe now. -- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial - shape. +- Issue #19361: JSON decoder now raises JSONDecodeError instead of ValueError. -- Issue #20998: Fixed re.fullmatch() of repeated single character pattern - with ignore case. Original patch by Matthew Barnett. +- Issue #18518: timeit now rejects statements which can't be compiled outside + a function or a loop (e.g. "return" or "break"). -- Issue #21075: fileinput.FileInput now reads bytes from standard stream if - binary mode is specified. Patch by Sam Kimbrel. +- Issue #23094: Fixed readline with frames in Python implementation of pickle. -- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a - flush() on the underlying binary stream. Patch by akira. +- Issue #23268: Fixed bugs in the comparison of ipaddress classes. -- 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 #21408: Removed incorrect implementations of __ne__() which didn't + returned NotImplemented if __eq__() returned NotImplemented. The default + __ne__() now works correctly. -- Issue #21398: Fix an unicode error in the pydoc pager when the documentation - contains characters not encodable to the stdout encoding. +- Issue #19996: :class:`email.feedparser.FeedParser` now handles (malformed) + headers with no key rather than assuming the body has started. -Tests ------ +- Issue #20188: Support Application-Layer Protocol Negotiation (ALPN) in the ssl + module. -- Issue #17756: Fix test_code test when run from the installed location. +- Issue #23133: Pickling of ipaddress objects now produces more compact and + portable representation. -- Issue #17752: Fix distutils tests when run from the installed location. +- Issue #23248: Update ssl error codes from latest OpenSSL git master. -IDLE ----- +- Issue #23266: Much faster implementation of ipaddress.collapse_addresses() + when there are many non-consecutive addresses. -- 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 #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. -What's New in Python 3.4.1rc1? -============================== +- Issue #15955: Add an option to limit output size when decompressing LZMA + data. Patch by Nikolaus Rath and Martin Panter. -Release date: 2014-05-05 +- Issue #23250: In the http.cookies module, capitalize "HttpOnly" and "Secure" + as they are written in the standard. -Core and Builtins ------------------ +- Issue #23063: In the disutils' check command, fix parsing of reST with code or + code-block directives. -- Issue #21274: Define PATH_MAX for GNU/Hurd in Python/pythonrun.c. +- 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 #21209: Fix sending tuples to custom generator objects with the yield - from syntax. +- Issue #17911: Provide a way to seed the linecache for a PEP-302 module + without actually loading the code. -- Issue #21134: Fix segfault when str is called on an uninitialized - UnicodeEncodeError, UnicodeDecodeError, or UnicodeTranslateError object. +- 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 #19537: Fix PyUnicode_DATA() alignment under m68k. Patch by - Andreas Schwab. +- Issue #19777: Provide a home() classmethod on Path objects. Contributed + by Victor Salgado and Mayank Tripathi. -- Issue #20929: Add a type cast to avoid shifting a negative number. +- Issue #23206: Make ``json.dumps(..., ensure_ascii=False)`` as fast as the + default case of ``ensure_ascii=True``. Patch by Naoki Inada. -- Issue #20731: Properly position in source code files even if they - are opened in text mode. Patch by Serhiy Storchaka. +- Issue #23185: Add math.inf and math.nan constants. -- Issue #20637: Key-sharing now also works for instance dictionaries of - subclasses. Patch by Peter Ingebretson. +- Issue #23186: Add ssl.SSLObject.shared_ciphers() and + ssl.SSLSocket.shared_ciphers() to fetch the client's list ciphers sent at + handshake. -- Issue #12546: Allow \x00 to be used as a fill character when using str, int, - float, and complex __format__ methods. +- Issue #23143: Remove compatibility with OpenSSLs older than 0.9.8. -- 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 #23132: Improve performance and introspection support of comparison + methods created by functool.total_ordering. -Library -------- +- Issue #19776: Add a expanduser() method on Path objects. -- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0. - In porting to Argument Clinic, the first two arguments were reversed. +- Issue #23112: Fix SimpleHTTPServer to correctly carry the query string and + fragment when it redirects to add a trailing slash. -- 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 #21793: Added http.HTTPStatus enums (i.e. HTTPStatus.OK, + HTTPStatus.NOT_FOUND). Patch by Demian Brecht. -- Issue #21321: itertools.islice() now releases the reference to the source - iterator when the slice is exhausted. Patch by Anton Afanasyev. +- Issue #23093: In the io, module allow more operations to work on detached + streams. -- Issue #9815: assertRaises now tries to clear references to local variables - in the exception's traceback. +- Issue #23111: In the ftplib, make ssl.PROTOCOL_SSLv23 the default protocol + version. -- Issue #13204: Calling sys.flags.__new__ would crash the interpreter, - now it raises a TypeError. +- Issue #22585: On OpenBSD 5.6 and newer, os.urandom() now calls getentropy(), + instead of reading /dev/urandom, to get pseudo-random bytes. -- Issue #19385: Make operations on a closed dbm.dumb database always raise the - same exception. +- Issue #19104: pprint now produces evaluable output for wrapped strings. -- Issue #21207: Detect when the os.urandom cached fd has been closed or - replaced, and open it anew. +- Issue #23071: Added missing names to codecs.__all__. Patch by Martin Panter. -- Issue #21291: subprocess's Popen.wait() is now thread safe so that - multiple threads may be calling wait() or poll() on a Popen instance - at the same time without losing the Popen.returncode value. +- Issue #22783: Pickling now uses the NEWOBJ opcode instead of the NEWOBJ_EX + opcode if possible. -- Issue #21127: Path objects can now be instantiated from str subclass - instances (such as ``numpy.str_``). +- Issue #15513: Added a __sizeof__ implementation for pickle classes. -- Issue #15002: urllib.response object to use _TemporaryFileWrapper (and - _TemporaryFileCloser) facility. Provides a better way to handle file - descriptor close. Patch contributed by Christian Theune. +- Issue #19858: pickletools.optimize() now aware of the MEMOIZE opcode, can + produce more compact result and no longer produces invalid output if input + data contains MEMOIZE opcodes together with PUT or BINPUT opcodes. -- Issue #12220: mindom now raises a custom ValueError indicating it doesn't - support spaces in URIs instead of letting a 'split' ValueError bubble up. +- Issue #22095: Fixed HTTPConnection.set_tunnel with default port. The port + value in the host header was set to "None". Patch by Demian Brecht. -- Issue #21239: patch.stopall() didn't work deterministically when the same - name was patched more than once. +- Issue #23016: A warning no longer produces an AttributeError when the program + is run with pythonw.exe. -- Issue #21222: Passing name keyword argument to mock.create_autospec now - works. +- Issue #21775: shutil.copytree(): fix crash when copying to VFAT. An exception + handler assumed that that OSError objects always have a 'winerror' attribute. + That is not the case, so the exception handler itself raised AttributeError + when run on Linux (and, presumably, any other non-Windows OS). + Patch by Greg Ward. -- Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX. +- Issue #1218234: Fix inspect.getsource() to load updated source of + reloaded module. Initial patch by Berker Peksag. -- Issue #17498: Some SMTP servers disconnect after certain errors, violating - strict RFC conformance. Instead of losing the error code when we issue the - subsequent RSET, smtplib now returns the error code and defers raising the - SMTPServerDisconnected error until the next command is issued. +- Issue #21740: Support wrapped callables in doctest. Patch by Claudiu Popa. -- Issue #17826: setting an iterable side_effect on a mock function created by - create_autospec now works. Patch by Kushal Das. +- Issue #23009: Make sure selectors.EpollSelecrtor.select() works when no + FD is registered. -- Issue #7776: Fix ``Host:`` header and reconnection when using - http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath. +- Issue #22959: In the constructor of http.client.HTTPSConnection, prefer the + context's check_hostname attribute over the *check_hostname* parameter. -- Issue #20968: unittest.mock.MagicMock now supports division. - Patch by Johannes Baiter. +- Issue #22696: Add function :func:`sys.is_finalizing` to know about + interpreter shutdown. -- Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second - parameter. Bug reported by Guido Vranken. +- Issue #16043: Add a default limit for the amount of data xmlrpclib.gzip_decode + will return. This resolves CVE-2013-1753. -- Issue #21169: getpass now handles non-ascii characters that the - input stream encoding cannot encode by re-encoding using the - replace error handler. +- 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 #21171: Fixed undocumented filter API of the rot13 codec. - Patch by Berker Peksag. +- Issue #22966: Fix __pycache__ pyc file name clobber when pyc_compile is + asked to compile a source file containing multiple dots in the source file + name. -- Issue #21172: isinstance check relaxed from dict to collections.Mapping. +- Issue #21971: Update turtledemo doc and add module to the index. -- Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError - if path and sock are specified at the same time. +- Issue #21032. Fixed socket leak if HTTPConnection.getresponse() fails. + Original patch by Martin Panter. -- Issue #21149: Improved thread-safety in logging cleanup during interpreter - shutdown. Thanks to Devin Jeanpierre for the patch. +- Issue #22407: Deprecated the use of re.LOCALE flag with str patterns or + re.ASCII. It was newer worked. -- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a - TypeError if the second argument is not a string or compiled regex. +- Issue #22902: The "ip" command is now used on Linux to determine MAC address + in uuid.getnode(). Pach by Bruno Cauet. -- Issue #21058: Fix a leak of file descriptor in - :func:`tempfile.NamedTemporaryFile`, close the file descriptor if - :func:`io.open` fails +- Issue #22960: Add a context argument to xmlrpclib.ServerProxy constructor. -- Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing. +- Issue #22389: Add contextlib.redirect_stderr(). -- Issue #21013: Enhance ssl.create_default_context() when used for server side - sockets to provide better security by default. +- 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 #20633: Replace relative import by absolute import. +- Issue #22915: SAX parser now supports files opened with file descriptor or + bytes path. -- Issue #20980: Stop wrapping exception when using ThreadPool. +- Issue #22609: Constructors and update methods of mapping classes in the + collections module now accept the self keyword argument. -- Issue #21082: In os.makedirs, do not set the process-wide umask. Note this - changes behavior of makedirs when exist_ok=True. +- Issue #22940: Add readline.append_history_file. -- Issue #20990: Fix issues found by pyflakes for multiprocessing. +- Issue #19676: Added the "namereplace" error handler. -- Issue #21015: SSL contexts will now automatically select an elliptic - curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise - default to "prime256v1". +- Issue #22788: Add *context* parameter to logging.handlers.HTTPHandler. -- Issue #20995: Enhance default ciphers used by the ssl module to enable - better security an prioritize perfect forward secrecy. +- Issue #22921: Allow SSLContext to take the *hostname* parameter even if + OpenSSL doesn't support SNI. -- Issue #20884: Don't assume that __file__ is defined on importlib.__init__. +- Issue #22894: TestCase.subTest() would cause the test suite to be stopped + when in failfast mode, even in the absence of failures. -- Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests. +- Issue #22796: HTTP cookie parsing is now stricter, in order to protect + against potential injection attacks. -- 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 - not waste memory if these modules are not used. +- Issue #22370: Windows detection in pathlib is now more robust. -- Issue #19157: Include the broadcast address in the usuable hosts for IPv6 - in ipaddress. +- Issue #22841: Reject coroutines in asyncio add_signal_handler(). + Patch by Ludovic.Gasc. -- Issue #11599: When an external command (e.g. compiler) fails, distutils now - prints out the whole command line (instead of just the command name) if the - environment variable DISTUTILS_DEBUG is set. +- Issue #19494: Added urllib.request.HTTPBasicPriorAuthHandler. Patch by + Matej Cepl. -- Issue #4931: distutils should not produce unhelpful "error: None" messages - anymore. distutils.util.grok_environment_error is kept but doc-deprecated. +- Issue #22578: Added attributes to the re.error class. -- Issue #20875: Prevent possible gzip "'read' is not defined" NameError. - Patch by Claudiu Popa. +- Issue #22849: Fix possible double free in the io.TextIOWrapper constructor. -- Issue #11558: ``email.message.Message.attach`` now returns a more - useful error message if ``attach`` is called on a message for which - ``is_multipart`` is False. +- Issue #12728: Different Unicode characters having the same uppercase but + different lowercase are now matched in case-insensitive regular expressions. -- Issue #20283: RE pattern methods now accept the string keyword parameters - as documented. The pattern and source keyword parameters are left as - deprecated aliases. +- Issue #22821: Fixed fcntl() with integer argument on 64-bit big-endian + platforms. -- Issue #20778: Fix modulefinder to work with bytecode-only modules. +- Issue #21650: Add an `--sort-keys` option to json.tool CLI. - - Issue #22824: Updated reprlib output format for sets to use set literals. -- Issue #20791: copy.copy() now doesn't make a copy when the input is - a bytes object. Initial patch by Peter Otten. ++- 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 -- Issue #19748: On AIX, time.mktime() now raises an OverflowError for year - outsize range [1902; 2037]. ++- Issue #22824: Updated reprlib output format for arrays to display empty + arrays without an unnecessary empty list. Suggested by Serhiy Storchaka. -- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for - missing keyword-only arguments. Patch by Jeremiah Lowin. +- Issue #22406: Fixed the uu_codec codec incorrectly ported to 3.x. + Based on patch by Martin Panter. -- Issue #20817: Fix inspect.getcallargs() to fail correctly if more - than 3 arguments are missing. Patch by Jeremiah Lowin. +- Issue #17293: uuid.getnode() now determines MAC address on AIX using netstat. + Based on patch by Aivars Kalvāns. -- Issue #6676: Ensure a meaningful exception is raised when attempting - to parse more than one XML document per pyexpat xmlparser instance. - (Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with - suggested wording by David Gutteridge) +- Issue #22769: Fixed ttk.Treeview.tag_has() when called without arguments. -- Issue #21117: Fix inspect.signature to better support functools.partial. - Due to the specifics of functools.partial implementation, - positional-or-keyword arguments passed as keyword arguments become - keyword-only. +- Issue #22417: Verify certificates by default in httplib (PEP 476). -- Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug - in yield-from implementation in CPythons prior to 3.4.1. +- Issue #22775: Fixed unpickling of http.cookies.SimpleCookie with protocol 2 + and above. Patch by Tim Graham. -- asyncio: Add gi_{frame,running,code} properties to CoroWrapper - (upstream issue #163). +- Issue #22776: Brought excluded code into the scope of a try block in + SysLogHandler.emit(). -- Issue #21311: Avoid exception in _osx_support with non-standard compiler - configurations. Patch by John Szakmeister. +- Issue #22665: Add missing get_terminal_size and SameFileError to + shutil.__all__. -- Issue #11571: Ensure that the turtle window becomes the topmost window - when launched on OS X. +- Issue #6623: Remove deprecated Netrc class in the ftplib module. Patch by + Matt Chaput. -Extension Modules ------------------ +- Issue #17381: Fixed handling of case-insensitive ranges in regular + expressions. -- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. +- Issue #22410: Module level functions in the re module now cache compiled + locale-dependent regular expressions taking into account the locale. -- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject - (and friends). +- Issue #22759: Query methods on pathlib.Path() (exists(), is_dir(), etc.) + now return False when the underlying stat call raises NotADirectoryError. -IDLE ----- +- Issue #8876: distutils now falls back to copying files when hard linking + doesn't work. This allows use with special filesystems such as VirtualBox + shared folders. -- Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation. +- Issue #22217: Implemented reprs of classes in the zipfile module. -- Issue #21284: Paragraph reformat test passes after user changes reformat width. +- Issue #22457: Honour load_tests in the start_dir of discovery. -- Issue #17654: Ensure IDLE menus are customized properly on OS X for - non-framework builds and for all variants of Tk. +- Issue #18216: gettext now raises an error when a .mo file has an + unsupported major version number. Patch by Aaron Hill. -Build ------ +- 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. -- The Windows build now includes OpenSSL 1.0.1g +- Issue #22676: Make the pickling of global objects which don't have a + __module__ attribute less slow. -- Issue #21285: Refactor and fix curses configure check to always search - in a ncursesw directory. +- Issue #18853: Fixed ResourceWarning in shlex.__nain__. -- Issue #15234: For BerkelyDB and Sqlite, only add the found library and - include directories if they aren't already being searched. This avoids - an explicit runtime library dependency. +- Issue #9351: Defaults set with set_defaults on an argparse subparser + are no longer ignored when also set on the parent parser. -- 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 #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. -C API ------ +- 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 #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(). +- 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. -Documentation -------------- +- Issue #22638: SSLv3 is now disabled throughout the standard library. + It can still be enabled by instantiating a SSLContext manually. -- Issue #17386: Expanded functionality of the ``Doc/make.bat`` script to make - it much more comparable to ``Doc/Makefile``. +- Issue #22641: In asyncio, the default SSL context for client connections + is now created using ssl.create_default_context(), for stronger security. -- Issue #21043: Remove the recommendation for specific CA organizations and to - mention the ability to load the OS certificates. +- Issue #17401: Include closefd in io.FileIO repr. -- Issue #20765: Add missing documentation for PurePath.with_name() and - PurePath.with_suffix(). +- 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 #19407: New package installation and distribution guides based on - the Python Packaging Authority tools. Existing guides have been retained - as legacy links from the distutils docs, as they still contain some - required reference material for tool developers that isn't recorded - anywhere else. +- Issue #20152: Convert the array and cmath modules to Argument Clinic. -- Issue #19697: Document cases where __main__.__spec__ is None. +- Issue #18643: Add socket.socketpair() on Windows. -Tests ------ +- Issue #22435: Fix a file descriptor leak when SocketServer bind fails. -- Issue #18604: Consolidated checks for GUI availability. All platforms now - at least check whether Tk can be instantiated when the GUI resource is - requested. +- Issue #13096: Fixed segfault in CTypes POINTER handling of large + values. -- Issue #21275: Fix a socket test on KFreeBSD. +- Issue #11694: Raise ConversionError in xdrlib as documented. Patch + by Filip Gruszczyński and Claudiu Popa. -- Issue #21223: Pass test_site/test_startup_imports when some of the extensions - are built as builtins. +- Issue #19380: Optimized parsing of regular expressions. -- Issue #20635: Added tests for Tk geometry managers. +- Issue #1519638: Now unmatched groups are replaced with empty strings in re.sub() + and re.subn(). -- Add test case for freeze. +- Issue #18615: sndhdr.what/whathdr now return a namedtuple. -- Issue #20743: Fix a reference leak in test_tcl. +- Issue #22462: Fix pyexpat's creation of a dummy frame to make it + appear in exception tracebacks. -- Issue #21097: Move test_namespace_pkgs into test_importlib. +- Issue #21965: Add support for in-memory SSL to the ssl module. Patch + by Geert Jansen. -- 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. +- Issue #21173: Fix len() on a WeakKeyDictionary when .clear() was called + with an iterator alive. -- Issue #20668: asyncio tests no longer rely on tests.txt file. - (Patch by Vajrasky Kok) +- Issue #11866: Eliminated race condition in the computation of names + for new threads. -- 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 #21905: Avoid RuntimeError in pickle.whichmodule() when sys.modules + is mutated while iterating. Patch by Olivier Grisel. -Tools/Demos ------------ +- 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. -- Add support for ``yield from`` to 2to3. +- 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. -- Add support for the PEP 465 matrix multiplication operator to 2to3. +- Issue #22219: The zipfile module CLI now adds entries for directories + (including empty directories) in ZIP file. -- Issue #16047: Fix module exception list and __file__ handling in freeze. - Patch by Meador Inge. +- Issue #22449: In the ssl.SSLContext.load_default_certs, consult the + environmental variables SSL_CERT_DIR and SSL_CERT_FILE on Windows. -- Issue #11824: Consider ABI tags in freeze. Patch by Meador Inge. +- 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 #20535: PYTHONWARNING no longer affects the run_tests.py script. - Patch by Arfrever Frehtes Taifersar Arahesis. +- 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. -What's New in Python 3.4.0? -=========================== +- Issue #20218: Added convenience methods read_text/write_text and read_bytes/ + write_bytes to pathlib.Path objects. -Release date: 2014-03-16 +- Issue #22437: Number of capturing groups in regular expression is no longer + limited by 100. -Library -------- +- Issue #17442: InteractiveInterpreter now displays the full chained traceback + in its showtraceback method, to match the built in interactive interpreter. -- Issue #20939: Fix test_geturl failure in test_urllibnet due to - new redirect of http://www.python.org/ to https://www.python.org. +- Issue #23392: Added tests for marshal C API that works with FILE*. -Documentation -------------- -- Merge in all documentation changes since branching 3.4.0rc1. +- Issue #10510: distutils register and upload methods now use HTML standards + compliant CRLF line endings. +- Issue #9850: Fixed macpath.join() for empty first component. Patch by + Oleg Oshmyan. -What's New in Python 3.4.0 release candidate 3? -=============================================== +- Issue #5309: distutils' build and build_ext commands now accept a ``-j`` + option to enable parallel building of extension modules. -Release date: 2014-03-09 +- Issue #22448: Improve canceled timer handles cleanup to prevent + unbound memory usage. Patch by Joshua Moore-Oliva. -Core and Builtins ------------------ +- Issue #22427: TemporaryDirectory no longer attempts to clean up twice when + used in the with statement in generator. -- Issue #20786: Fix signatures for dict.__delitem__ and - property.__delete__ builtins. +- Issue #22362: Forbidden ambiguous octal escapes out of range 0-0o377 in + regular expressions. -Library -------- +- Issue #20912: Now directories added to ZIP file have correct Unix and MS-DOS + directory attributes. -- Issue #20839: Don't trigger a DeprecationWarning in the still supported - pkgutil.get_loader() API when __loader__ isn't set on a module (nor - when pkgutil.find_loader() is called directly). +- Issue #21866: ZipFile.close() no longer writes ZIP64 central directory + records if allowZip64 is false. -Build ------ +- Issue #22278: Fix urljoin problem with relative urls, a regression observed + after changes to issue22118 were submitted. -- Issue #14512: Launch pydoc -b instead of pydocgui.pyw on Windows. +- Issue #22415: Fixed debugging output of the GROUPREF_EXISTS opcode in the re + module. Removed trailing spaces in debugging output. -- Issue #20748: Uninstalling pip does not leave behind the pyc of - the uninstaller anymore. +- Issue #22423: Unhandled exception in thread no longer causes unhandled + AttributeError when sys.stderr is None. -- Issue #20568: The Windows installer now installs the unversioned ``pip`` - command in addition to the versioned ``pip3`` and ``pip3.4`` commands. +- Issue #21332: Ensure that ``bufsize=1`` in subprocess.Popen() selects + line buffering, rather than block buffering. Patch by Akira Li. -- Issue #20757: The ensurepip helper for the Windows uninstaller now skips - uninstalling pip (rather than failing) if the user has updated pip to a - different version from the one bundled with ensurepip. +- Issue #21091: Fix API bug: email.message.EmailMessage.is_attachment is now + a method. -- Issue #20465: Update OS X and Windows installer builds to use - SQLite 3.8.3.1. +- 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__. -What's New in Python 3.4.0 release candidate 2? -=============================================== +- 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. -Release date: 2014-02-23 +- Issue #4180: The warnings registries are now reset when the filters + are modified. -Core and Builtins ------------------ +- Issue #22419: Limit the length of incoming HTTP request in wsgiref server to + 65536 bytes and send a 414 error code for higher lengths. Patch contributed + by Devin Cook. -- Issue #20625: Parameter names in __annotations__ were not mangled properly. - Discovered by Jonas Wielicki, patch by Yury Selivanov. +- Lax cookie parsing in http.cookies could be a security issue when combined + with non-standard cookie handling in some Web browsers. Reported by + Sergey Bobrov. -- Issue #20261: In pickle, lookup __getnewargs__ and __getnewargs_ex__ on the - type of the object. +- 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 #20619: Give the AST nodes of keyword-only arguments a column and line - number. +- Issue #22384: An exception in Tkinter callback no longer crashes the program + when it is run with pythonw.exe. -- Issue #20526: Revert changes of issue #19466 which introduces a regression: - don't clear anymore the state of Python threads early during the Python - shutdown. +- Issue #22168: Prevent turtle AttributeError with non-default Canvas on OS X. -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 #20710: The pydoc summary line no longer displays the "self" parameter - for bound methods. +- Issue #13968: The glob module now supports recursive search in + subdirectories using the "**" pattern. -- Issue #20566: Change asyncio.as_completed() to use a Queue, to - avoid O(N**2) behavior. +- Issue #21951: Fixed a crash in Tkinter on AIX when called Tcl command with + empty string or tuple argument. -- Issue #20704: Implement new debug API in asyncio. Add new methods - BaseEventLoop.set_debug() and BaseEventLoop.get_debug(). - Add support for setting 'asyncio.tasks._DEBUG' variable with - 'PYTHONASYNCIODEBUG' environment variable. +- Issue #21951: Tkinter now most likely raises MemoryError instead of crash + if the memory allocation fails. -- asyncio: Refactoring and fixes: BaseEventLoop.sock_connect() raises an - error if the address is not resolved; use __slots__ in Handle and - TimerHandle; as_completed() and wait() raise TypeError if the passed - list of Futures is a single Future; call_soon() and other 'call_*()' - functions raise TypeError if the passed callback is a coroutine - function; _ProactorBasePipeTransport uses _FlowControlMixin; - WriteTransport.set_write_buffer_size() calls _maybe_pause_protocol() - to consider pausing receiving if the watermark limits have changed; - fix _check_resolved_address() for IPv6 address; and other minor - improvements, along with multiple documentation updates. +- Issue #22338: Fix a crash in the json module on memory allocation failure. -- Issue #20684: Fix inspect.getfullargspec() to not to follow __wrapped__ - chains. Make its behaviour consistent with bound methods first argument. - Patch by Nick Coghlan and Yury Selivanov. +- Issue #12410: imaplib.IMAP4 now supports the context management protocol. + Original patch by Tarek Ziadé. -- Issue #20681: Add new error handling API in asyncio. New APIs: - loop.set_exception_handler(), loop.default_exception_handler(), and - loop.call_exception_handler(). +- Issue #21270: We now override tuple methods in mock.call objects so that + they can be used as normal call attributes. -- Issue #20673: Implement support for UNIX Domain Sockets in asyncio. - New APIs: loop.create_unix_connection(), loop.create_unix_server(), - streams.open_unix_connection(), and streams.start_unix_server(). +- 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 #20616: Add a format() method to tracemalloc.Traceback. +- Issue #22226: First letter no longer is stripped from the "status" key in + the result of Treeview.heading(). -- Issue #19744: the ensurepip installation step now just prints a warning to - stderr rather than failing outright if SSL/TLS is unavailable. This allows - local installation of POSIX builds without SSL/TLS support. +- Issue #19524: Fixed resource leak in the HTTP connection when an invalid + response is received. Patch by Martin Panter. -- Issue #20594: Avoid name clash with the libc function posix_close. +- Issue #20421: Add a .version() method to SSL sockets exposing the actual + protocol version in use. -Build ------ +- Issue #19546: configparser exceptions no longer expose implementation details. + Chained KeyErrors are removed, which leads to cleaner tracebacks. Patch by + Claudiu Popa. -- Issue #20641: Run MSI custom actions (pip installation, pyc compilation) - with the NoImpersonate flag, to support elevated execution (UAC). +- 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. -- Issue #20221: Removed conflicting (or circular) hypot definition when - compiled with VS 2010 or above. Initial patch by Tabrez Mohammed. +- Issue #21933: Turtledemo users can change the code font size with a menu + selection or control(command) '-' or '+' or control-mousewheel. + Original patch by Lita Cho. -- Issue #20609: Restored the ability to build 64-bit Windows binaries on - 32-bit Windows, which was broken by the change in issue #19788. +- Issue #21597: The separator between the turtledemo text pane and the drawing + canvas can now be grabbed and dragged with a mouse. The code text pane can + be widened to easily view or copy the full width of the text. The canvas + can be widened on small screens. Original patches by Jan Kanis and Lita Cho. +- Issue #18132: Turtledemo buttons no longer disappear when the window is + shrunk. Original patches by Jan Kanis and Lita Cho. -What's New in Python 3.4.0 release candidate 1? -=============================================== +- 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. -Release date: 2014-02-10 +- Issue #21527: Add a default number of workers to ThreadPoolExecutor equal + to 5 times the number of CPUs. Patch by Claudiu Popa. -Core and Builtins ------------------ +- 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 #19255: The builtins module is restored to initial value before - cleaning other modules. The sys and builtins modules are cleaned last. +- 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 #20588: Make Python-ast.c C89 compliant. +- 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 #20437: Fixed 22 potential bugs when deleting objects references. +- 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 #20500: Displaying an exception at interpreter shutdown no longer - risks triggering an assertion failure in PyObject_Str. +- Issue #22182: Use e.args to unpack exceptions correctly in + distutils.file_util.move_file. Patch by Claudiu Popa. -- Issue #20538: UTF-7 incremental decoder produced inconsistent string when - input was truncated in BASE64 section. +- The webbrowser module now uses subprocess's start_new_session=True rather + than a potentially risky preexec_fn=os.setsid call. -- Issue #20404: io.TextIOWrapper (and hence the open() builtin) now uses the - internal codec marking system added for issue #19619 to throw LookupError - for known non-text encodings at stream construction time. The existing - output type checks remain in place to deal with unmarked third party - codecs. +- Issue #22042: signal.set_wakeup_fd(fd) now raises an exception if the file + descriptor is in blocking mode. -- Issue #17162: Add PyType_GetSlot. +- Issue #16808: inspect.stack() now returns a named tuple instead of a tuple. + Patch by Daniel Shahaf. -- Issue #20162: Fix an alignment issue in the siphash24() hash function which - caused a crash on PowerPC 64-bit (ppc64). +- Issue #22236: Fixed Tkinter images copying operations in NoDefaultRoot mode. -Library -------- +- 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 #20530: The signatures for slot builtins have been updated - to reflect the fact that they only accept positional-only arguments. +- 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 #20517: Functions in the os module that accept two filenames - now register both filenames in the exception on failure. +- Issue #21549: Added the "members" parameter to TarFile.list(). -- Issue #20563: The ipaddress module API is now considered stable. +- Issue #19628: Allow compileall recursion depth to be specified with a -r + option. -- Issue #14983: email.generator now always adds a line end after each MIME - boundary marker, instead of doing so only when there is an epilogue. This - fixes an RFC compliance bug and solves an issue with signed MIME parts. +- Issue #15696: Add a __sizeof__ implementation for mmap objects on Windows. -- Issue #20540: Fix a performance regression (vs. Python 3.2) when layering - a multiprocessing Connection over a TCP socket. For small payloads, Nagle's - algorithm would introduce idle delays before the entire transmission of a - message. +- Issue #22068: Avoided reference loops with Variables and Fonts in Tkinter. -- Issue #16983: the new email header parsing code will now decode encoded words - that are (incorrectly) surrounded by quotes, and register a defect. +- Issue #22165: SimpleHTTPRequestHandler now supports undecodable file names. -- Issue #19772: email.generator no longer mutates the message object when - doing a down-transform from 8bit to 7bit CTEs. +- Issue #15381: Optimized line reading in io.BytesIO. -- Issue #20536: the statistics module now correctly handle Decimal instances - with positive exponents +- Issue #8797: Raise HTTPError on failed Basic Authentication immediately. + Initial patch by Sam Bull. -- Issue #18805: the netmask/hostmask parsing in ipaddress now more reliably - filters out illegal values and correctly allows any valid prefix length. +- Issue #20729: Restored the use of lazy iterkeys()/itervalues()/iteritems() + in the mailbox module. -- Issue #20481: For at least Python 3.4, the statistics module will require - that all inputs for a single operation be of a single consistent type, or - else a mixed of ints and a single other consistent type. This avoids - some interoperability issues that arose with the previous approach of - coercing to a suitable common type. +- Issue #21448: Changed FeedParser feed() to avoid O(N**2) behavior when + parsing long line. Original patch by Raymond Hettinger. - - Issue #22184: The functools LRU Cache decorator factory now gives an earlier -- Issue #20478: the statistics module now treats collections.Counter inputs - like any other iterable. ++- Issue #22184: The functools LRU Cache decorator factory now gives an earlier + and clearer error message when the user forgets the required parameters. -- Issue #17369: get_filename was raising an exception if the filename - parameter's RFC2231 encoding was broken in certain ways. This was - a regression relative to python2. +- Issue #17923: glob() patterns ending with a slash no longer match non-dirs on + AIX. Based on patch by Delhallt. -- Issue #20013: Some imap servers disconnect if the current mailbox is - deleted, and imaplib did not handle that case gracefully. Now it - handles the 'bye' correctly. +- Issue #21725: Added support for RFC 6531 (SMTPUTF8) in smtpd. -- Issue #20531: Revert 3.4 version of fix for #19063, and apply the 3.3 - version. That is, do *not* raise an error if unicode is passed to - email.message.Message.set_payload. +- 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 #20476: If a non-compat32 policy is used with any of the email parsers, - EmailMessage is now used as the factory class. The factory class should - really come from the policy; that will get fixed in 3.5. +- Issue #5411: Added support for the "xztar" format in the shutil module. -- Issue #19920: TarFile.list() no longer fails when outputs a listing - containing non-encodable characters. Based on patch by Vajrasky Kok. +- Issue #21121: Don't force 3rd party C extensions to be built with + -Werror=declaration-after-statement. -- Issue #20515: Fix NULL pointer dereference introduced by issue #20368. +- Issue #21975: Fixed crash when using uninitialized sqlite3.Row (in particular + when unpickling pickled sqlite3.Row). sqlite3.Row is now initialized in the + __new__() method. -- Issue #19186: Restore namespacing of expat symbols inside the pyexpat module. +- Issue #20170: Convert posixmodule to use Argument Clinic. -- Issue #20053: ensurepip (and hence venv) are no longer affected by the - settings in the default pip configuration file. +- 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 #20426: When passing the re.DEBUG flag, re.compile() displays the - debug output every time it is called, regardless of the compilation cache. +- Issue #22127: Bypass IDNA for pure-ASCII host names in the socket module + (in particular for numeric IPs). -- Issue #20368: The null character now correctly passed from Tcl to Python. - Improved error handling in variables-related commands. +- Issue #21047: set the default value for the *convert_charrefs* argument + of HTMLParser to True. Patch by Berker Peksag. -- Issue #20435: Fix _pyio.StringIO.getvalue() to take into account newline - translation settings. +- Add an __all__ to html.entities. -- tracemalloc: Fix slicing traces and fix slicing a traceback. +- Issue #15114: the strict mode and argument of HTMLParser, HTMLParser.error, + and the HTMLParserError exception have been removed. -- Issue #20354: Fix an alignment issue in the tracemalloc module on 64-bit - platforms. Bug seen on 64-bit Linux when using "make profile-opt". +- Issue #22085: Dropped support of Tk 8.3 in Tkinter. -- Issue #17159: inspect.signature now accepts duck types of functions, - which adds support for Cython functions. Initial patch by Stefan Behnel. +- Issue #21580: Now Tkinter correctly handles bytes arguments passed to Tk. + In particular this allows to initialize images from binary data. -- Issue #18801: Fix inspect.classify_class_attrs to correctly classify - object.__new__ and object.__init__. +- 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. -- Fixed cmath.isinf's name in its argument parsing code. +- Issue #22018: On Windows, signal.set_wakeup_fd() now also supports sockets. + A side effect is that Python depends to the WinSock library. -- Issue #20311, #20452: poll and epoll now round the timeout away from zero, - instead of rounding towards zero, in select and selectors modules: - select.epoll.poll(), selectors.PollSelector.poll() and - selectors.EpollSelector.poll(). For example, a timeout of one microsecond - (1e-6) is now rounded to one millisecondi (1e-3), instead of being rounded to - zero. However, the granularity property and asyncio's resolution feature - were removed again. +- 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. -- asyncio: Some refactoring; various fixes; add write flow control to - unix pipes; Future.set_exception() instantiates the exception - argument if it is a class; improved proactor pipe transport; support - wait_for(f, None); don't log broken/disconnected pipes; use - ValueError instead of assert for forbidden subprocess_{shell,exec} - arguments; added a convenience API for subprocess management; added - StreamReader.at_eof(); properly handle duplicate coroutines/futures - in gather(), wait(), as_completed(); use a bytearray for buffering - in StreamReader; and more. +- Issue #17172: Make turtledemo start as active on OS X even when run with + subprocess. Patch by Lita Cho. -- Issue #20288: fix handling of invalid numeric charrefs in HTMLParser. +- Issue #21704: Fix build error for _multiprocessing when semaphores + are not available. Patch by Arfrever Frehtes Taifersar Arahesis. -- Issue #20424: Python implementation of io.StringIO now supports lone surrogates. +- Issue #20173: Convert sha1, sha256, sha512 and md5 to ArgumentClinic. + Patch by Vajrasky Kok. -- Issue #20308: inspect.signature now works on classes without user-defined - __init__ or __new__ methods. +- Fix repr(_socket.socket) on Windows 64-bit: don't fail with OverflowError + on closed socket. repr(socket.socket) already works fine. -- Issue #20372: inspect.getfile (and a bunch of other inspect functions that - use it) doesn't crash with unexpected AttributeError on classes defined in C - without __module__. +- Issue #22033: Reprs of most Python implemened classes now contain actual + class name instead of hardcoded one. -- Issue #20356: inspect.signature formatting uses '/' to separate - positional-only parameters from others. +- Issue #21947: The dis module can now disassemble generator-iterator + objects based on their gi_code attribute. Patch by Clement Rouault. -- Issue #20223: inspect.signature now supports methods defined with - functools.partialmethods. +- Issue #16133: The asynchat.async_chat.handle_read() method now ignores + BlockingIOError exceptions. -- Issue #19456: ntpath.join() now joins relative paths correctly when a drive - is present. +- Issue #22044: Fixed premature DECREF in call_tzinfo_method. + Patch by Tom Flanagan. -- Issue #19077: tempfile.TemporaryDirectory cleanup no longer fails when - called during shutdown. Emitting resource warning in __del__ no longer fails. - Original patch by Antoine Pitrou. +- Issue #19884: readline: Disable the meta modifier key if stdout is not + a terminal to not write the ANSI sequence "\033[1034h" into stdout. This + sequence is used on some terminal (ex: TERM=xterm-256color") to enable + support of 8 bit characters. -- Issue #20394: Silence Coverity warning in audioop module. +- Issue #4350: Removed a number of out-of-dated and non-working for a long time + Tkinter methods. -- Issue #20367: Fix behavior of concurrent.futures.as_completed() for - duplicate arguments. Patch by Glenn Langford. +- 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 #8260: The read(), readline() and readlines() methods of - codecs.StreamReader returned incomplete data when were called after - readline() or read(size). Based on patch by Amaury Forgeot d'Arc. +- Issue #15275: Clean up and speed up the ntpath module. -- Issue #20105: the codec exception chaining now correctly sets the - traceback of the original exception as its __traceback__ attribute. +- Issue #21888: plistlib's load() and loads() now work if the fmt parameter is + specified. -- Issue #17481: inspect.getfullargspec() now uses inspect.signature() API. +- Issue #22032: __qualname__ instead of __name__ is now always used to format + fully qualified class names of Python implemented classes. -- Issue #15304: concurrent.futures.wait() can block forever even if - Futures have completed. Patch by Glenn Langford. +- Issue #22031: Reprs now always use hexadecimal format with the "0x" prefix + when contain an id in form " at 0x...". -- Issue #14455: plistlib: fix serializing integers in the range - of an unsigned long long but outside of the range of signed long long for - binary plist files. +- Issue #22018: signal.set_wakeup_fd() now raises an OSError instead of a + ValueError on ``fstat()`` failure. -IDLE ----- +- Issue #21044: tarfile.open() now handles fileobj with an integer 'name' + attribute. Based on patch by Antoine Pietri. -- Issue #20406: Use Python application icons for Idle window title bars. - Patch mostly by Serhiy Storchaka. +- Issue #21966: Respect -q command-line option when code module is ran. -- Update the python.gif icon for the Idle classbrowser and pathbowser - from the old green snake to the new blue and yellow snakes. +- Issue #19076: Don't pass the redundant 'file' argument to self.error(). -- Issue #17721: Remove non-functional configuration dialog help button until we - make it actually gives some help when clicked. Patch by Guilherme Simões. +- Issue #16382: Improve exception message of warnings.warn() for bad + category. Initial patch by Phil Elson. -Tests ------ +- 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 #20532: Tests which use _testcapi now are marked as CPython only. +- Issue #21942: Fixed source file viewing in pydoc's server mode on Windows. -- Issue #19920: Added tests for TarFile.list(). Based on patch by Vajrasky Kok. +- Issue #11259: asynchat.async_chat().set_terminator() now raises a ValueError + if the number of received bytes is negative. -- Issue #19990: Added tests for the imghdr module. Based on patch by - Claudiu Popa. +- Issue #12523: asynchat.async_chat.push() now raises a TypeError if it doesn't + get a bytes string -- Issue #20474: Fix test_socket "unexpected success" failures on OS X 10.7+. +- Issue #21707: Add missing kwonlyargcount argument to + ModuleFinder.replace_paths_in_code(). -Tools/Demos ------------ +- Issue #20639: calling Path.with_suffix('') allows removing the suffix + again. Patch by July Tikhonov. -- Issue #20530: Argument Clinic's signature format has been revised again. - The new syntax is highly human readable while still preventing false - positives. The syntax also extends Python syntax to denote "self" and - positional-only parameters, allowing inspect.Signature objects to be - totally accurate for all supported builtins in Python 3.4. +- Issue #21714: Disallow the construction of invalid paths using + Path.with_name(). Original patch by Antony Lee. -- Issue #20456: Argument Clinic now observes the C preprocessor conditional - compilation statements of the C files it parses. When a Clinic block is - inside a conditional code, it adjusts its output to match, including - automatically generating an empty methoddef macro. +- Issue #15014: Added 'auth' method to smtplib to make implementing auth + mechanisms simpler, and used it internally in the login method. -- Issue #20456: Cloned functions in Argument Clinic now use the correct - name, not the name of the function they were cloned from, for text - strings inside generated code. +- Issue #21151: Fixed a segfault in the winreg module when ``None`` is passed + as a ``REG_BINARY`` value to SetValueEx. Patch by John Ehresman. -- Issue #20456: Fixed Argument Clinic's test suite and "--converters" feature. +- 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 #20456: Argument Clinic now allows specifying different names - for a parameter in Python and C, using "as" on the parameter line. +- Issue #5800: headers parameter of wsgiref.headers.Headers is now optional. + Initial patch by Pablo Torres Navarrete and SilentGhost. -- Issue #20326: Argument Clinic now uses a simple, unique signature to - annotate text signatures in docstrings, resulting in fewer false - positives. "self" parameters are also explicitly marked, allowing - inspect.Signature() to authoritatively detect (and skip) said parameters. +- Issue #21781: ssl.RAND_add() now supports strings longer than 2 GB. -- Issue #20326: Argument Clinic now generates separate checksums for the - input and output sections of the block, allowing external tools to verify - that the input has not changed (and thus the output is not out-of-date). +- Issue #21679: Prevent extraneous fstat() calls during open(). Patch by + Bohuslav Kabrda. -Build ------ +- Issue #21863: cProfile now displays the module name of C extension functions, + in addition to their own name. -- Issue #20465: Update SQLite shipped with OS X installer to 3.8.3. +- 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. -C-API ------ +- Issue #21858: Better handling of Python exceptions in the sqlite3 module. -- Issue #20517: Added new functions allowing OSError exceptions to reference - two filenames instead of one: PyErr_SetFromErrnoWithFilenameObjects() and - PyErr_SetExcFromWindowsErrWithFilenameObjects(). +- Issue #21476: Make sure the email.parser.BytesParser TextIOWrapper is + discarded after parsing, so the input file isn't unexpectedly closed. -Documentation -------------- +- Issue #20295: imghdr now recognizes OpenEXR format images. -- Issue #20488: Change wording to say importlib is *the* implementation of - import instead of just *an* implementation. +- Issue #21729: Used the "with" statement in the dbm.dumb module to ensure + files closing. Patch by Claudiu Popa. -- Issue #6386: Clarify in the tutorial that specifying a symlink to execute - means the directory containing the executed script and not the symlink is - added to sys.path. +- Issue #21491: socketserver: Fix a race condition in child processes reaping. +- Issue #21719: Added the ``st_file_attributes`` field to os.stat_result on + Windows. - - Issue #21832: Require named tuple inputs to be exact strings. -What's New in Python 3.4.0 Beta 3? -================================== ++- Issue #21832: Require named tuple inputs to be exact strings. -Release date: 2014-01-26 +- Issue #21722: The distutils "upload" command now exits with a non-zero + return code when uploading fails. Patch by Martin Dengler. -Core and Builtins ------------------ +- Issue #21723: asyncio.Queue: support any type of number (ex: float) for the + maximum size. Patch written by Vajrasky Kok. -- Issue #20189: Four additional builtin types (PyTypeObject, - PyMethodDescr_Type, _PyMethodWrapper_Type, and PyWrapperDescr_Type) - have been modified to provide introspection information for builtins. +- Issue #21711: support for "site-python" directories has now been removed + from the site module (it was deprecated in 3.4). -- Issue #17825: Cursor "^" is correctly positioned for SyntaxError and - IndentationError. +- 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 #2382: SyntaxError cursor "^" is now written at correct position in most - cases when multibyte characters are in line (before "^"). This still not - works correctly with wide East Asian characters. +- Issue #18039: dbm.dump.open() now always creates a new database when the + flag has the value 'n'. Patch by Claudiu Popa. -- Issue #18960: The first line of Python script could be executed twice when - the source encoding was specified on the second line. Now the source encoding - declaration on the second line isn't effective if the first line contains - anything except a comment. 'python -x' works now again with files with the - source encoding declarations, and can be used to make Python batch files - on Windows. +- 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. -Library -------- +- Issue #21766: Prevent a security hole in CGIHTTPServer by URL unquoting paths + before checking for a CGI script at that path. -- asyncio: Various improvements and small changes not all covered by - issues listed below. E.g. wait_for() now cancels the inner task if - the timeout occcurs; tweaked the set of exported symbols; renamed - Empty/Full to QueueEmpty/QueueFull; "with (yield from lock)" now - uses a separate context manager; readexactly() raises if not enough - data was read; PTY support tweaks. +- Issue #21310: Fixed possible resource leak in failed open(). -- Issue #20311: asyncio: Add a granularity attribute to BaseEventLoop: maximum - between the resolution of the BaseEventLoop.time() method and the resolution - of the selector. The granuarility is used in the scheduler to round time and - deadline. +- Issue #21256: Printout of keyword args should be in deterministic order in + a mock function call. This will help to write better doctests. -- Issue #20311: selectors: Add a resolution attribute to BaseSelector. +- Issue #21677: Fixed chaining nonnormalized exceptions in io close() methods. -- Issue #20189: unittest.mock now no longer assumes that any object for - which it could get an inspect.Signature is a callable written in Python. - Fix courtesy of Michael Foord. +- Issue #11709: Fix the pydoc.help function to not fail when sys.stdin is not a + valid file. -- Issue #20317: ExitStack.__exit__ could create a self-referential loop if an - exception raised by a cleanup operation already had its context set - correctly (for example, by the @contextmanager decorator). The infinite - loop this caused is now avoided by checking if the expected context is - already set before trying to fix it. +- Issue #21515: tempfile.TemporaryFile now uses os.O_TMPFILE flag is available. -- Issue #20374: Fix build with GNU readline >= 6.3. +- Issue #13223: Fix pydoc.writedoc so that the HTML documentation for methods + that use 'self' in the example code is generated correctly. -- Issue #20262: Warnings are raised now when duplicate names are added in the - ZIP file or too long ZIP file comment is truncated. +- Issue #21463: In urllib.request, fix pruning of the FTP cache. -- Issue #20165: The unittest module no longer considers tests marked with - @expectedFailure successful if they pass. +- Issue #21618: The subprocess module could fail to close open fds that were + inherited by the calling process and already higher than POSIX resource + 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 #18574: Added missing newline in 100-Continue reply from - http.server.BaseHTTPRequestHandler. Patch by Nikolaus Rath. +- Issue #20383: Introduce importlib.util.module_from_spec() as the preferred way + to create a new module. -- Issue #20270: urllib.urlparse now supports empty ports. +- Issue #21552: Fixed possible integer overflow of too long string lengths in + the tkinter module on 64-bit platforms. -- Issue #20243: TarFile no longer raise ReadError when opened in write mode. +- Issue #14315: The zipfile module now ignores extra fields in the central + directory that are too short to be parsed instead of letting a struct.unpack + 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(). -- Issue #20238: TarFile opened with external fileobj and "w:gz" mode didn't - write complete output on close. ++- Issue #13742: Added "key" and "reverse" parameters to heapq.merge(). + (First draft of patch contributed by Simon Sapin.) -- Issue #20245: The open functions in the tarfile module now correctly handle - empty mode. +- Issue #21402: tkinter.ttk now works when default root window is not set. -- Issue #20242: Fixed basicConfig() format strings for the alternative - formatting styles. Thanks to kespindler for the bug report and patch. +- Issue #3015: _tkinter.create() now creates tkapp object with wantobject=1 by + default. -- Issue #20246: Fix buffer overflow in socket.recvfrom_into. +- Issue #10203: sqlite3.Row now truly supports sequence protocol. In particulr + it supports reverse() and negative indices. Original patch by Claudiu Popa. -- Issues #20206 and #5803: Fix edge case in email.quoprimime.encode where it - truncated lines ending in a character needing encoding but no newline by - using a more efficient algorithm that doesn't have the bug. +- Issue #18807: If copying (no symlinks) specified for a venv, then the python + interpreter aliases (python, python3) are now created by copying rather than + symlinking. -- Issue #19082: Working xmlrpc.server and xmlrpc.client examples. Both in - modules and in documentation. Initial patch contributed by Vajrasky Kok. +- Issue #20197: Added support for the WebP image type in the imghdr module. + Patch by Fabrice Aneche and Claudiu Popa. -- Issue #20138: The wsgiref.application_uri() and wsgiref.request_uri() - functions now conform to PEP 3333 when handle non-ASCII URLs. +- Issue #21513: Speedup some properties of IP addresses (IPv4Address, + IPv6Address) such as .is_private or .is_multicast. -- Issue #19097: Raise the correct Exception when cgi.FieldStorage is given an - invalid fileobj. +- Issue #21137: Improve the repr for threading.Lock() and its variants + by showing the "locked" or "unlocked" status. Patch by Berker Peksag. -- Issue #20152: Ported Python/import.c over to Argument Clinic. +- Issue #21538: The plistlib module now supports loading of binary plist files + when reference or offset size is not a power of two. -- Issue #13107: argparse and optparse no longer raises an exception when output - a help on environment with too small COLUMNS. Based on patch by - Elazar Gershuni. +- Issue #21455: Add a default backlog to socket.listen(). -- Issue #20207: Always disable SSLv2 except when PROTOCOL_SSLv2 is explicitly - asked for. +- Issue #21525: Most Tkinter methods which accepted tuples now accept lists too. - - Issue #22166: with the assistance of a new internal _codecs._forget_codec -- Issue #18960: The tokenize module now ignore the source encoding declaration - on the second line if the first line contains anything except a comment. ++- Issue #22166: With the assistance of a new internal _codecs._forget_codec + helping function, test_codecs now clears the encoding caches to avoid the + appearance of a reference leak -- Issue #20078: Reading malformed zipfiles no longer hangs with 100% CPU - consumption. +- Issue #22236: Tkinter tests now don't reuse default root window. New root + window is created for every test class. -- Issue #20113: os.readv() and os.writev() now raise an OSError exception on - error instead of returning -1. +- Issue #10744: Fix PEP 3118 format strings on ctypes objects with a nontrivial + shape. -- Issue #19719: Make importlib.abc.MetaPathFinder.find_module(), - PathEntryFinder.find_loader(), and Loader.load_module() use PEP 451 APIs to - help with backwards-compatibility. +- Issue #20826: Optimize ipaddress.collapse_addresses(). -- Issue #20144: inspect.Signature now supports parsing simple symbolic - constants as parameter default values in __text_signature__. +- Issue #21487: Optimize ipaddress.summarize_address_range() and + ipaddress.{IPv4Network,IPv6Network}.subnets(). -- Issue #20072: Fixed multiple errors in tkinter with wantobjects is False. +- Issue #21486: Optimize parsing of netmasks in ipaddress.IPv4Network and + ipaddress.IPv6Network. -- Issue #20229: Avoid plistlib deprecation warning in platform.mac_ver(). +- Issue #13916: Disallowed the surrogatepass error handler for non UTF-* + encodings. -- Issue #14455: Fix some problems with the new binary plist support in plistlib. +- Issue #20998: Fixed re.fullmatch() of repeated single character pattern + with ignore case. Original patch by Matthew Barnett. -IDLE ----- +- Issue #21075: fileinput.FileInput now reads bytes from standard stream if + binary mode is specified. Patch by Sam Kimbrel. -- Issue #17390: Add Python version to Idle editor window title bar. - Original patches by Edmond Burnett and Kent Johnson. +- Issue #19775: Add a samefile() method to pathlib Path objects. Initial + patch by Vajrasky Kok. -- Issue #18960: IDLE now ignores the source encoding declaration on the second - line if the first line contains anything except a comment. +- Issue #21226: Set up modules properly in PyImport_ExecCodeModuleObject + (and friends). -Tests ------ +- Issue #21398: Fix an unicode error in the pydoc pager when the documentation + contains characters not encodable to the stdout encoding. -- Issue #20358: Tests for curses.window.overlay and curses.window.overwrite - no longer specify min{row,col} > max{row,col}. +- 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 #19804: The test_find_mac test in test_uuid is now skipped if the - ifconfig executable is not available. +- Issue #21156: importlib.abc.InspectLoader.source_to_code() is now a + staticmethod. -- Issue #19886: Use better estimated memory requirements for bigmem tests. +- Issue #21424: Simplified and optimized heaqp.nlargest() and nmsmallest() + to make fewer tuple comparisons. -Tools/Demos ------------ +- Issue #21396: Fix TextIOWrapper(..., write_through=True) to not force a + flush() on the underlying binary stream. Patch by akira. -- Issue #20390: Argument Clinic's "file" output preset now defaults to - "{dirname}/clinic/{basename}.h". +- Issue #18314: Unlink now removes junctions on Windows. Patch by Kim Gräsman -- Issue #20390: Argument Clinic's "class" directive syntax has been extended - with two new required arguments: "typedef" and "type_object". +- Issue #21088: Bugfix for curses.window.addch() regression in 3.4.0. + In porting to Argument Clinic, the first two arguments were reversed. -- Issue #20390: Argument Clinic: If __new__ or __init__ functions didn't use - kwargs (or args), the PyArg_NoKeywords (or PyArg_NoPositional) calls - generated are only run when the type object is an exact match. +- Issue #21407: _decimal: The module now supports function signatures. -- Issue #20390: Argument Clinic now fails if you have required parameters after - optional parameters. +- 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 #21469: Reduced the risk of false positives in robotparser by -- Issue #20390: Argument Clinic converters now have a new template they can - inject code into: "modifiers". Code put there is run in the parsing - function after argument parsing but before the call to the impl. ++- 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 #20376: Argument Clinic now escapes backslashes in docstrings. +- Issue #19414: Have the OrderedDict mark deleted links as unusable. + This gives an early failure if the link is deleted during iteration. -- Issue #20381: Argument Clinic now sanity checks the default argument when - c_default is also specified, providing a nice failure message for - disallowed values. +- Issue #21421: Add __slots__ to the MappingViews ABC. + Patch by Josh Rosenberg. -- Issue #20189: Argument Clinic now ensures that parser functions for - __new__ are always of type newfunc, the type of the tp_new slot. - Similarly, parser functions for __init__ are now always of type initproc, - the type of tp_init. +- Issue #21101: Eliminate double hashing in the C speed-up code for + collections.Counter(). -- Issue #20189: Argument Clinic now suppresses the docstring for __new__ - and __init__ functions if no docstring is provided in the input. +- Issue #21321: itertools.islice() now releases the reference to the source + iterator when the slice is exhausted. Patch by Anton Afanasyev. -- Issue #20189: Argument Clinic now suppresses the "self" parameter in the - impl for @staticmethod functions. +- 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 #20294: Argument Clinic now supports argument parsing for __new__ and - __init__ functions. +- 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 #20299: Argument Clinic custom converters may now change the default - value of c_default and py_default with a class member. +- Issue #13248: removed previously deprecated asyncore.dispatcher __getattr__ + cheap inheritance hack. -- Issue #20287: Argument Clinic's output is now configurable, allowing - delaying its output or even redirecting it to a separate file. +- Issue #9815: assertRaises now tries to clear references to local variables + in the exception's traceback. -- Issue #20226: Argument Clinic now permits simple expressions - (e.g. "sys.maxsize - 1") as default values for parameters. +- 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 #19936: Added executable bits or shebang lines to Python scripts which - requires them. Disable executable bits and shebang lines in test and - benchmark files in order to prevent using a random system python, and in - source files of modules which don't provide command line interface. Fixed - shebang lines in the unittestgui and checkpip scripts. +- Issue #13204: Calling sys.flags.__new__ would crash the interpreter, + now it raises a TypeError. -- Issue #20268: Argument Clinic now supports cloning the parameters and - return converter of existing functions. +- Issue #19385: Make operations on a closed dbm.dumb database always raise the + same exception. -- Issue #20228: Argument Clinic now has special support for class special - methods. +- Issue #21207: Detect when the os.urandom cached fd has been closed or + replaced, and open it anew. -- Issue #20214: Fixed a number of small issues and documentation errors in - Argument Clinic (see issue for details). +- Issue #21291: subprocess's Popen.wait() is now thread safe so that + multiple threads may be calling wait() or poll() on a Popen instance + at the same time without losing the Popen.returncode value. -- Issue #20196: Fixed a bug where Argument Clinic did not generate correct - parsing code for functions with positional-only parameters where all arguments - are optional. +- Issue #21127: Path objects can now be instantiated from str subclass + instances (such as ``numpy.str_``). -- Issue #18960: 2to3 and the findnocoding.py script now ignore the source - encoding declaration on the second line if the first line contains anything - except a comment. +- Issue #15002: urllib.response object to use _TemporaryFileWrapper (and + _TemporaryFileCloser) facility. Provides a better way to handle file + descriptor close. Patch contributed by Christian Theune. -- Issue #19723: The marker comments Argument Clinic uses have been changed - to improve readability. +- 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 #20157: When Argument Clinic renames a parameter because its name - collides with a C keyword, it no longer exposes that rename to PyArg_Parse. +- Issue #21068: The ssl.PROTOCOL* constants are now enum members. -- Issue #20141: Improved Argument Clinic's support for the PyArg_Parse "O!" - format unit. +- Issue #21276: posixmodule: Don't define USE_XATTRS on KFreeBSD and the Hurd. -- Issue #20144: Argument Clinic now supports simple symbolic constants - as parameter default values. +- Issue #21262: New method assert_not_called for Mock. + It raises AssertionError if the mock has been called. -- Issue #20143: The line numbers reported in Argument Clinic errors are - now more accurate. +- Issue #21238: New keyword argument `unsafe` to Mock. It raises + `AttributeError` incase of an attribute startswith assert or assret. -- Issue #20142: Py_buffer variables generated by Argument Clinic are now - initialized with a default value. +- Issue #20896: ssl.get_server_certificate() now uses PROTOCOL_SSLv23, not + PROTOCOL_SSLv3, for maximum compatibility. -Build ------ +- Issue #21239: patch.stopall() didn't work deterministically when the same + name was patched more than once. -- Issue #12837: Silence a tautological comparison warning on OS X under Clang in - socketmodule.c. +- 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. -What's New in Python 3.4.0 Beta 2? -================================== +- Issue #21197: Add lib64 -> lib symlink in venvs on 64-bit non-OS X POSIX. -Release date: 2014-01-05 +- Issue #17498: Some SMTP servers disconnect after certain errors, violating + strict RFC conformance. Instead of losing the error code when we issue the + subsequent RSET, smtplib now returns the error code and defers raising the + SMTPServerDisconnected error until the next command is issued. -Core and Builtins ------------------ +- Issue #17826: setting an iterable side_effect on a mock function created by + create_autospec now works. Patch by Kushal Das. -- Issue #17432: Drop UCS2 from names of Unicode functions in python3.def. +- Issue #7776: Fix ``Host:`` header and reconnection when using + http.client.HTTPConnection.set_tunnel(). Patch by Nikolaus Rath. -- Issue #19526: Exclude all new API from the stable ABI. Exceptions can be - made if a need is demonstrated. +- Issue #20968: unittest.mock.MagicMock now supports division. + Patch by Johannes Baiter. -- Issue #19969: PyBytes_FromFormatV() now raises an OverflowError if "%c" - argument is not in range [0; 255]. +- Fix arbitrary memory access in JSONDecoder.raw_decode with a negative second + parameter. Bug reported by Guido Vranken. -- Issue #19995: %c, %o, %x, and %X now issue a DeprecationWarning on non-integer - input; reworded docs to clarify that an integer type should define both __int__ - and __index__. +- Issue #21169: getpass now handles non-ascii characters that the + input stream encoding cannot encode by re-encoding using the + replace error handler. -- Issue #19787: PyThread_set_key_value() now always set the value. In Python - 3.3, the function did nothing if the key already exists (if the current value - is a non-NULL pointer). +- Issue #21171: Fixed undocumented filter API of the rot13 codec. + Patch by Berker Peksag. -- Issue #14432: Remove the thread state field from the frame structure. Fix a - crash when a generator is created in a C thread that is destroyed while the - generator is still used. The issue was that a generator contains a frame, and - the frame kept a reference to the Python state of the destroyed C thread. The - crash occurs when a trace function is setup. +- Issue #20539: Improved math.factorial error message for large positive inputs + and changed exception type (OverflowError -> ValueError) for large negative + inputs. -- Issue #19576: PyGILState_Ensure() now initializes threads. At startup, Python - has no concrete GIL. If PyGILState_Ensure() is called from a new thread for - the first time and PyEval_InitThreads() was not called yet, a GIL needs to be - created. +- Issue #21172: isinstance check relaxed from dict to collections.Mapping. -- Issue #17576: Deprecation warning emitted now when __int__() or __index__() - return not int instance. +- Issue #21155: asyncio.EventLoop.create_unix_server() now raises a ValueError + if path and sock are specified at the same time. -- Issue #19932: Fix typo in import.h, missing whitespaces in function prototypes. +- Issue #21136: Avoid unnecessary normalization of Fractions resulting from + power and other operations. Patch by Raymond Hettinger. -- Issue #19736: Add module-level statvfs constants defined for GNU/glibc - based systems. +- Issue #17621: Introduce importlib.util.LazyLoader. -- Issue #20097: Fix bad use of "self" in importlib's WindowsRegistryFinder. +- Issue #21076: signal module constants were turned into enums. + Patch by Giampaolo Rodola'. -- Issue #19729: In str.format(), fix recursive expansion in format spec. +- Issue #20636: Improved the repr of Tkinter widgets. -- Issue #19638: Fix possible crash / undefined behaviour from huge (more than 2 - billion characters) input strings in _Py_dg_strtod. +- Issue #19505: The items, keys, and values views of OrderedDict now support + reverse iteration using reversed(). -Library -------- +- Issue #21149: Improved thread-safety in logging cleanup during interpreter + shutdown. Thanks to Devin Jeanpierre for the patch. -- Issue #20154: Deadlock in asyncio.StreamReader.readexactly(). +- Issue #21058: Fix a leak of file descriptor in + :func:`tempfile.NamedTemporaryFile`, close the file descriptor if + :func:`io.open` fails -- Issue #16113: Remove sha3 module again. +- Issue #21200: Return None from pkgutil.get_loader() when __spec__ is missing. -- Issue #20111: pathlib.Path.with_suffix() now sanity checks the given suffix. +- Issue #21013: Enhance ssl.create_default_context() when used for server side + sockets to provide better security by default. -- Fix breakage in TestSuite.countTestCases() introduced by issue #11798. +- Issue #20145: `assertRaisesRegex` and `assertWarnsRegex` now raise a + TypeError if the second argument is not a string or compiled regex. -- Issue #20108: Avoid parameter name clash in inspect.getcallargs(). +- Issue #20633: Replace relative import by absolute import. -- Issue #19918: Fix PurePath.relative_to() under Windows. +- Issue #20980: Stop wrapping exception when using ThreadPool. -- Issue #19422: Explicitly disallow non-SOCK_STREAM sockets in the ssl - module, rather than silently let them emit clear text data. +- Issue #21082: In os.makedirs, do not set the process-wide umask. Note this + changes behavior of makedirs when exist_ok=True. -- Issue #20046: Locale alias table no longer contains entities which can be - calculated. Generalized support of the euro modifier. +- Issue #20990: Fix issues found by pyflakes for multiprocessing. -- Issue #20027: Fixed locale aliases for devanagari locales. +- Issue #21015: SSL contexts will now automatically select an elliptic + curve for ECDH key exchange on OpenSSL 1.0.2 and later, and otherwise + default to "prime256v1". -- Issue #20067: Tkinter variables now work when wantobjects is false. +- Issue #21000: Improve the command-line interface of json.tool. -- Issue #19020: Tkinter now uses splitlist() instead of split() in configure - methods. +- Issue #20995: Enhance default ciphers used by the ssl module to enable + better security an prioritize perfect forward secrecy. -- Issue #19744: ensurepip now provides a better error message when Python is - built without SSL/TLS support (pip currently requires that support to run, - even if only operating with local wheel files) +- Issue #20884: Don't assume that __file__ is defined on importlib.__init__. -- Issue #19734: ensurepip now ignores all pip environment variables to avoid - odd behaviour based on user configuration settings +- Issue #21499: Ignore __builtins__ in several test_importlib.test_api tests. -- Fix TypeError on "setup.py upload --show-response". +- Issue #20627: xmlrpc.client.ServerProxy is now a context manager. -- Issue #20045: Fix "setup.py register --list-classifiers". +- Issue #19165: The formatter module now raises DeprecationWarning instead of + PendingDeprecationWarning. -- Issue #18879: When a method is looked up on a temporary file, avoid closing - the file before the method is possibly called. +- Issue #13936: Remove the ability of datetime.time instances to be considered + false in boolean contexts. -- Issue #20037: Avoid crashes when opening a text file late at interpreter - shutdown. +- Issue 18931: selectors module now supports /dev/poll on Solaris. + Patch by Giampaolo Rodola'. -- Issue #19967: Thanks to the PEP 442, asyncio.Future now uses a - destructor to log uncaught exceptions, instead of the dedicated - _TracebackLogger class. +- 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. -- Added a Task.current_task() class method to asyncio. +- Issue #20574: Implement incremental decoder for cp65001 code (Windows code + page 65001, Microsoft UTF-8). -- Issue #19850: Set SA_RESTART in asyncio when registering a signal - handler to limit EINTR occurrences. +- 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 + not waste memory if these modules are not used. -- Implemented write flow control in asyncio for proactor event loop (Windows). +- Issue #19157: Include the broadcast address in the usuable hosts for IPv6 + in ipaddress. -- Change write buffer in asyncio use to avoid O(N**2) behavior. Make - write()/sendto() accept bytearray/memoryview. +- Issue #11599: When an external command (e.g. compiler) fails, distutils now + prints out the whole command line (instead of just the command name) if the + environment variable DISTUTILS_DEBUG is set. -- Issue #20034: Updated alias mapping to most recent locale.alias file - from X.org distribution using makelocalealias.py. +- Issue #4931: distutils should not produce unhelpful "error: None" messages + anymore. distutils.util.grok_environment_error is kept but doc-deprecated. -- Issue #5815: Fixed support for locales with modifiers. Fixed support for - locale encodings with hyphens. +- Issue #20875: Prevent possible gzip "'read' is not defined" NameError. + Patch by Claudiu Popa. -- Issue #20026: Fix the sqlite module to handle correctly invalid isolation - level (wrong type). +- Issue #11558: ``email.message.Message.attach`` now returns a more + useful error message if ``attach`` is called on a message for which + ``is_multipart`` is False. -- Issue #18829: csv.Dialect() now checks type for delimiter, escapechar and - quotechar fields. Original patch by Vajrasky Kok. +- Issue #20283: RE pattern methods now accept the string keyword parameters + as documented. The pattern and source keyword parameters are left as + deprecated aliases. -- Issue #19855: uuid.getnode() on Unix now looks on the PATH for the - executables used to find the mac address, with /sbin and /usr/sbin as - fallbacks. +- Issue #20778: Fix modulefinder to work with bytecode-only modules. -- Issue #20007: HTTPResponse.read(0) no more prematurely closes connection. - Original patch by Simon Sapin. +- Issue #20791: copy.copy() now doesn't make a copy when the input is + a bytes object. Initial patch by Peter Otten. -- Issue #19946: multiprocessing now uses runpy to initialize __main__ in - child processes when necessary, allowing it to correctly handle scripts - without suffixes and submodules that use explicit relative imports or - otherwise rely on parent modules being correctly imported prior to - execution. +- Issue #19748: On AIX, time.mktime() now raises an OverflowError for year + outsize range [1902; 2037]. -- Issue #19921: When Path.mkdir() is called with parents=True, any missing - parent is created with the default permissions, ignoring the mode argument - (mimicking the POSIX "mkdir -p" command). +- Issue #19573: inspect.signature: Use enum for parameter kind constants. -- Issue #19887: Improve the Path.resolve() algorithm to support certain - symlink chains. +- Issue #20726: inspect.signature: Make Signature and Parameter picklable. -- Issue #19912: Fixed numerous bugs in ntpath.splitunc(). +- Issue #17373: Add inspect.Signature.from_callable method. -- Issue #19911: ntpath.splitdrive() now correctly processes the 'İ' character - (U+0130, LATIN CAPITAL LETTER I WITH DOT ABOVE). +- Issue #20378: Improve repr of inspect.Signature and inspect.Parameter. -- Issue #19532: python -m compileall with no filename/directory arguments now - respects the -f and -q flags instead of ignoring them. +- Issue #20816: Fix inspect.getcallargs() to raise correct TypeError for + missing keyword-only arguments. Patch by Jeremiah Lowin. -- Issue #19623: Fixed writing to unseekable files in the aifc module. +- Issue #20817: Fix inspect.getcallargs() to fail correctly if more + than 3 arguments are missing. Patch by Jeremiah Lowin. -- Issue #19946: multiprocessing.spawn now raises ImportError when the module to - be used as the main module cannot be imported. +- Issue #6676: Ensure a meaningful exception is raised when attempting + to parse more than one XML document per pyexpat xmlparser instance. + (Original patches by Hirokazu Yamamoto and Amaury Forgeot d'Arc, with + suggested wording by David Gutteridge) -- Issue #17919: select.poll.register() again works with poll.POLLNVAL on AIX. - Fixed integer overflow in the eventmask parameter. +- Issue #21117: Fix inspect.signature to better support functools.partial. + Due to the specifics of functools.partial implementation, + positional-or-keyword arguments passed as keyword arguments become + keyword-only. -- Issue #19063: if a Charset's body_encoding was set to None, the email - package would generate a message claiming the Content-Transfer-Encoding - was 7bit, and produce garbage output for the content. This now works. - A couple of other set_payload mishandlings of non-ASCII are also fixed. - In addition, calling set_payload with a string argument without - specifying a charset now raises an error (this is a new error in 3.4). +- Issue #20334: inspect.Signature and inspect.Parameter are now hashable. + Thanks to Antony Lee for bug reports and suggestions. -- Issue #15475: Add __sizeof__ implementations for itertools objects. +- Issue #15916: doctest.DocTestSuite returns an empty unittest.TestSuite instead + of raising ValueError if it finds no tests -- Issue #19944: Fix importlib.find_spec() so it imports parents as needed - and move the function to importlib.util. +- Issue #21209: Fix asyncio.tasks.CoroWrapper to workaround a bug + in yield-from implementation in CPythons prior to 3.4.1. -- Issue #19880: Fix a reference leak in unittest.TestCase. Explicitly break - reference cycles between frames and the _Outcome instance. +- asyncio: Add gi_{frame,running,code} properties to CoroWrapper + (upstream issue #163). -- Issue #17429: platform.linux_distribution() now decodes files from the UTF-8 - encoding with the surrogateescape error handler, instead of decoding from the - locale encoding in strict mode. It fixes the function on Fedora 19 which is - probably the first major distribution release with a non-ASCII name. Patch - written by Toshio Kuratomi. +- Issue #21311: Avoid exception in _osx_support with non-standard compiler + configurations. Patch by John Szakmeister. -- Issue #19343: Expose FreeBSD-specific APIs in resource module. Original - patch by Koobs. +- Issue #11571: Ensure that the turtle window becomes the topmost window + when launched on OS X. -- Issue #19929: Call os.read with 32768 within subprocess.Popen.communicate - rather than 4096 for efficiency. A microbenchmark shows Linux and OS X - both using ~50% less cpu time this way. +- Issue #21801: Validate that __signature__ is None or an instance of Signature. -- Issue #19506: Use a memoryview to avoid a data copy when piping data - to stdin within subprocess.Popen.communicate. 5-10% less cpu usage. +- Issue #21923: Prevent AttributeError in distutils.sysconfig.customize_compiler + due to possible uninitialized _config_vars. -- Issue #19876: selectors unregister() no longer raises ValueError or OSError - if the FD is closed (as long as it was registered). +- 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 #19908: pathlib now joins relative Windows paths correctly when a drive - is present. Original patch by Antoine Pitrou. +- Issue #22733: Fix ffi_prep_args not zero-extending argument values correctly + on 64-bit Windows. -- Issue #19296: Silence compiler warning in dbm_open +- 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. -- Issue #6784: Strings from Python 2 can now be unpickled as bytes - objects by setting the encoding argument of Unpickler to be 'bytes'. - Initial patch by Merlijn van Deen. +IDLE +---- -- Issue #19839: Fix regression in bz2 module's handling of non-bzip2 data at - EOF, and analogous bug in lzma module. +- 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 #19881: Fix pickling bug where cpickle would emit bad pickle data for - large bytes string (i.e., with size greater than 2**32-1). +- Issue #16893: Update Idle doc chapter to match current Idle and add new + information. -- Issue #19138: doctest's IGNORE_EXCEPTION_DETAIL now allows a match when - no exception detail exists (no colon following the exception's name, or - a colon does follow but no text follows the colon). +- 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 #19927: Add __eq__ to path-based loaders in importlib. +- 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 ++ 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 #19827: On UNIX, setblocking() and settimeout() methods of - socket.socket can now avoid a second syscall if the ioctl() function can be - used, or if the non-blocking flag of the socket is unchanged. +- 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 #19785: smtplib now supports SSLContext.check_hostname and server name - indication for TLS/SSL connections. +- 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 #19784: poplib now supports SSLContext.check_hostname and server name - indication for TLS/SSL connections. +- Issue #17390: Adjust Editor window title; remove 'Python', + move version to end. -- Issue #19783: nntplib now supports SSLContext.check_hostname and server name - indication for TLS/SSL connections. +- Issue #14105: Idle debugger breakpoints no longer disappear + when inseting or deleting lines. -- Issue #19782: imaplib now supports SSLContext.check_hostname and server name - indication for TLS/SSL connections. +- 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 #20123: Fix pydoc.synopsis() for "binary" modules. +- Issue #21765: Add support for non-ascii identifiers to HyperParser. -- Issue #19834: Support unpickling of exceptions pickled by Python 2. +- Issue #21940: Add unittest for WidgetRedirector. Initial patch by Saimadhav + Heblikar. -- Issue #19781: ftplib now supports SSLContext.check_hostname and server name - indication for TLS/SSL connections. +- Issue #18592: Add unittest for SearchDialogBase. Patch by Phil Webster. -- Issue #19509: Add SSLContext.check_hostname to match the peer's certificate - with server_hostname on handshake. +- Issue #21694: Add unittest for ParenMatch. Patch by Saimadhav Heblikar. -- Issue #15798: Fixed subprocess.Popen() to no longer fail if file - descriptor 0, 1 or 2 is closed. +- Issue #21686: add unittest for HyperParser. Original patch by Saimadhav + Heblikar. -- Issue #17897: Optimized unpickle prefetching. +- 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 #3693: Make the error message more helpful when the array.array() - constructor is given a str. Move the array module typecode documentation to - the docstring of the constructor. +- Issue #21695: Closing a Find-in-files output window while the search is + still in progress no longer closes Idle. -- Issue #19088: Fixed incorrect caching of the copyreg module in - object.__reduce__() and object.__reduce_ex__(). +- Issue #18910: Add unittest for textView. Patch by Phil Webster. -- Issue #19698: Removed exec_module() methods from - importlib.machinery.BuiltinImporter and ExtensionFileLoader. +- Issue #18292: Add unittest for AutoExpand. Patch by Saihadhav Heblikar. -- Issue #18864: Added a setter for ModuleSpec.has_location. +- Issue #18409: Add unittest for AutoComplete. Patch by Phil Webster. -- Fixed _pickle.Unpickler to not fail when loading empty strings as - persistent IDs. +- Issue #21477: htest.py - Improve framework, complete set of tests. + Patches by Saimadhav Heblikar -- Issue #11480: Fixed copy.copy to work with classes with custom metaclasses. - Patch by Daniel Urban. +- 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 #6477: Added support for pickling the types of built-in singletons - (i.e., Ellipsis, NotImplemented, None). +- Issue #21139: Change default paragraph width to 72, the PEP 8 recommendation. -- Issue #19713: Add remaining PEP 451-related deprecations and move away - from using find_module/find_loaer/load_module. +- Issue #21284: Paragraph reformat test passes after user changes reformat width. -- Issue #19708: Update pkgutil to use the new importer APIs. +- Issue #17654: Ensure IDLE menus are customized properly on OS X for + non-framework builds and for all variants of Tk. -- Issue #19703: Update pydoc to use the new importer APIs. +- Issue #23180: Rename IDLE "Windows" menu item to "Window". + Patch by Al Sweigart. -- Issue #19851: Fixed a regression in reloading sub-modules. +Build +----- -- ssl.create_default_context() sets OP_NO_COMPRESSION to prevent CRIME. +- Issue #15506: Use standard PKG_PROG_PKG_CONFIG autoconf macro in the configure + script. -- Issue #19802: Add socket.SO_PRIORITY. +- Issue #22935: Allow the ssl module to be compiled if openssl doesn't support + SSL 3. -- Issue #11508: Fixed uuid.getnode() and uuid.uuid1() on environment with - virtual interface. Original patch by Kent Frazier. +- Issue #22592: Drop support of the Borland C compiler to build Python. The + distutils module still supports it to build extensions. -- Issue #11489: JSON decoder now accepts lone surrogates. +- Issue #22591: Drop support of MS-DOS, especially of the DJGPP compiler + (MS-DOS port of GCC). -- Issue #19545: Avoid chained exceptions while passing stray % to - time.strptime(). Initial patch by Claudiu Popa. +- Issue #16537: Check whether self.extensions is empty in setup.py. Patch by + Jonathan Hosmer. -IDLE ----- +- Issue #22359: Remove incorrect uses of recursive make. Patch by Jonas + Wagner. -- Issue #20058: sys.stdin.readline() in IDLE now always returns only one line. +- Issue #21958: Define HAVE_ROUND when building with Visual Studio 2013 and + above. Patch by Zachary Turner. -- Issue #19481: print() of string subclass instance in IDLE no longer hangs. +- 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 #18270: Prevent possible IDLE AttributeError on OS X when no initial - shell window is present. +- Issue #15759: "make suspicious", "make linkcheck" and "make doctest" in Doc/ + now display special message when and only when there are failures. -Tests ------ +- 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 #20055: Fix test_shutil under Windows with symlink privileges held. - Patch by Vajrasky Kok. +- Issue #21037: Add a build option to enable AddressSanitizer support. -- Issue #20070: Don't run test_urllib2net when network resources are not - enabled. +- 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 #19938: Re-enabled test_bug_1333982 in test_dis, which had been - disabled since 3.0 due to the changes in listcomp handling. +- Issue #21285: Refactor and fix curses configure check to always search + in a ncursesw directory. -- Issue #19320: test_tcl no longer fails when wantobjects is false. +- Issue #15234: For BerkelyDB and Sqlite, only add the found library and + include directories if they aren't already being searched. This avoids + an explicit runtime library dependency. -- Issue #19919: Fix flaky SSL test. connect_ex() sometimes returns - EWOULDBLOCK on Windows or VMs hosted on Windows. +- Issue #17861: Tools/scripts/generate_opcode_h.py automatically regenerates + Include/opcode.h from Lib/opcode.py if the later gets any change. -- Issue #19912: Added tests for ntpath.splitunc(). +- 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 #19828: Fixed test_site when the whole suite is run with -S. +- Issue #20022: Eliminate use of deprecated bundlebuilder in OS X builds. -- Issue #19928: Implemented a test for repr() of cell objects. +- Issue #15968: Incorporated Tcl, Tk, and Tix builds into the Windows build + solution. -- Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and - test_statistics when python is run with -OO. +- Issue #17095: Fix Modules/Setup *shared* support. -- Issue #19926: Removed unneeded test_main from test_abstract_numbers. - Patch by Vajrasky Kok. +- Issue #21811: Anticipated fixes to support OS X versions > 10.9. -- Issue #19572: More skipped tests explicitly marked as skipped. +- Issue #21166: Prevent possible segfaults and other random failures of + python --generate-posix-vars in pybuilddir.txt build target. -- Issue #19595, #19987: Re-enabled a long-disabled test in test_winsound. +- Issue #18096: Fix library order returned by python-config. -- Issue #19588: Fixed tests in test_random that were silently skipped most - of the time. Patch by Julian Gindi. +- Issue #17219: Add library build dir for Python extension cross-builds. -Build +- 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 #19728: Enable pip installation by default on Windows. +- 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 #16136: Remove VMS support +- 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 #18215: Add script Tools/ssl/test_multiple_versions.py to compile and - run Python's unit tests with multiple versions of OpenSSL. +- Issue #22079: PyType_Ready() now checks that statically allocated type has + no dynamically allocated bases. -- Issue #19922: define _INCLUDE__STDC_A1_SOURCE in HP-UX to include mbstate_t - for mbrtowc(). +- Issue #22453: Removed non-documented macro PyObject_REPR(). -- Issue #19788: kill_python(_d).exe is now run as a PreBuildEvent on the - pythoncore sub-project. This should prevent build errors due a previous - build's python(_d).exe still running. +- 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(). Documentation ------------- @@@ -3387,209 -6020,220 +3387,209 @@@ Core and Builtin 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. +- asyncio: Various improvements and small changes not all covered by + issues listed below. E.g. wait_for() now cancels the inner task if + the timeout occcurs; tweaked the set of exported symbols; renamed + Empty/Full to QueueEmpty/QueueFull; "with (yield from lock)" now + uses a separate context manager; readexactly() raises if not enough + data was read; PTY support tweaks. +- Issue #20311: asyncio: Add a granularity attribute to BaseEventLoop: maximum + between the resolution of the BaseEventLoop.time() method and the resolution + of the selector. The granuarility is used in the scheduler to round time and + deadline. -What's New in Python 3.3.0 Release Candidate 2? -=============================================== +- Issue #20311: selectors: Add a resolution attribute to BaseSelector. -*Release date: 09-Sep-2012* +- Issue #20189: unittest.mock now no longer assumes that any object for + which it could get an inspect.Signature is a callable written in Python. + Fix courtesy of Michael Foord. -Core and Builtins ------------------ +- Issue #20317: ExitStack.__exit__ could create a self-referential loop if an + exception raised by a cleanup operation already had its context set + correctly (for example, by the @contextmanager decorator). The infinite + loop this caused is now avoided by checking if the expected context is + already set before trying to fix it. -- 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 #20374: Fix build with GNU readline >= 6.3. -- Issue #15784: Modify `OSError`.__str__() to better distinguish between errno - error numbers and Windows error numbers. +- Issue #20262: Warnings are raised now when duplicate names are added in the + ZIP file or too long ZIP file comment is truncated. -- Issue #15781: Fix two small race conditions in import's module locking. +- Issue #20165: The unittest module no longer considers tests marked with + @expectedFailure successful if they pass. -Library -------- +- Issue #18574: Added missing newline in 100-Continue reply from + http.server.BaseHTTPRequestHandler. Patch by Nikolaus Rath. -- Issue #17158: Add 'symbols' to help() welcome message; clarify - 'modules spam' messages. +- Issue #20270: urllib.urlparse now supports empty ports. -- Issue #15847: Fix a regression in argparse, which did not accept tuples as - argument lists anymore. +- Issue #20243: TarFile no longer raise ReadError when opened in write mode. -- Issue #15828: Restore support for C extensions in `imp.load_module()`. +- Issue #20238: TarFile opened with external fileobj and "w:gz" mode didn't + write complete output on close. -- Issue #15340: Fix importing the random module when ``/dev/urandom`` cannot be - opened. This was a regression caused by the hash randomization patch. +- Issue #20245: The open functions in the tarfile module now correctly handle + empty mode. -- Issue #10650: Deprecate the watchexp parameter of the `Decimal.quantize()` - method. +- Issue #20242: Fixed basicConfig() format strings for the alternative + formatting styles. Thanks to kespindler for the bug report and patch. -- 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 #20246: Fix buffer overflow in socket.recvfrom_into. -- 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. +- Issues #20206 and #5803: Fix edge case in email.quoprimime.encode where it + truncated lines ending in a character needing encoding but no newline by + using a more efficient algorithm that doesn't have the bug. -Build ------ +- Issue #19082: Working xmlrpc.server and xmlrpc.client examples. Both in + modules and in documentation. Initial patch contributed by Vajrasky Kok. -- Issue #15822: Really ensure 2to3 grammar pickles are properly installed - (replaces fixes for Issue #15645). +- Issue #20138: The wsgiref.application_uri() and wsgiref.request_uri() + functions now conform to PEP 3333 when handle non-ASCII URLs. -Documentation -------------- +- Issue #19097: Raise the correct Exception when cgi.FieldStorage is given an + invalid fileobj. -- 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. +- Issue #20152: Ported Python/import.c over to Argument Clinic. +- Issue #13107: argparse and optparse no longer raises an exception when output + a help on environment with too small COLUMNS. Based on patch by + Elazar Gershuni. -What's New in Python 3.3.0 Release Candidate 1? -=============================================== +- Issue #20207: Always disable SSLv2 except when PROTOCOL_SSLv2 is explicitly + asked for. -*Release date: 25-Aug-2012* +- Issue #18960: The tokenize module now ignore the source encoding declaration + on the second line if the first line contains anything except a comment. -Core and Builtins ------------------ +- Issue #20078: Reading malformed zipfiles no longer hangs with 100% CPU + consumption. -- Issue #15573: memoryview comparisons are now performed by value with full - support for any valid struct module format definition. +- Issue #20113: os.readv() and os.writev() now raise an OSError exception on + error instead of returning -1. -- 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 #19719: Make importlib.abc.MetaPathFinder.find_module(), + PathEntryFinder.find_loader(), and Loader.load_module() use PEP 451 APIs to + help with backwards-compatibility. -- Issue #15778: Ensure that ``str(ImportError(msg))`` returns a str even when - msg isn't a str. +- Issue #20144: inspect.Signature now supports parsing simple symbolic + constants as parameter default values in __text_signature__. -- 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 #20072: Fixed multiple errors in tkinter with wantobjects is False. -- Issue #15761: Fix crash when ``PYTHONEXECUTABLE`` is set on Mac OS X. +- Issue #20229: Avoid plistlib deprecation warning in platform.mac_ver(). -- Issue #15726: Fix incorrect bounds checking in PyState_FindModule. Patch by - Robin Schreiber. +- Issue #14455: Fix some problems with the new binary plist support in plistlib. -- Issue #15604: Update uses of `PyObject_IsTrue()` to check for and handle - errors correctly. Patch by Serhiy Storchaka. +IDLE +---- -- Issue #14846: `importlib.FileFinder` now handles the case where the directory - being searched is removed after a previous import attempt. +- Issue #17390: Add Python version to Idle editor window title bar. + Original patches by Edmond Burnett and Kent Johnson. -Library -------- +- Issue #18960: IDLE now ignores the source encoding declaration on the second + line if the first line contains anything except a comment. -- Issue #13370: Ensure that ctypes works on Mac OS X when Python is compiled - using the clang compiler. +Tests +----- -- Issue #13072: The array module's 'u' format code is now deprecated and will be - removed in Python 4.0. +- Issue #20358: Tests for curses.window.overlay and curses.window.overwrite + no longer specify min{row,col} > max{row,col}. -- Issue #15544: Fix Decimal.__float__ to work with payload-carrying NaNs. +- Issue #19804: The test_find_mac test in test_uuid is now skipped if the + ifconfig executable is not available. -- Issue #15776: Allow pyvenv to work in existing directory with --clean. +- Issue #19886: Use better estimated memory requirements for bigmem tests. -- Issue #15249: email's BytesGenerator now correctly mangles From lines (when - requested) even if the body contains undecodable bytes. +Tools/Demos +----------- -- Issue #15777: Fix a refleak in _posixsubprocess. +- Issue #20390: Argument Clinic's "file" output preset now defaults to + "{dirname}/clinic/{basename}.h". -- Issue ##665194: Update `email.utils.localtime` to use datetime.astimezone and - correctly handle historic changes in UTC offsets. +- Issue #20390: Argument Clinic's "class" directive syntax has been extended - with two new required arguments: "typedef" and "type_object". ++ with two new required arguments: "typedef" and "type_object". -- Issue #15199: Fix JavaScript's default MIME type to application/javascript. - Patch by Bohuslav Kabrda. +- Issue #20390: Argument Clinic: If __new__ or __init__ functions didn't use + kwargs (or args), the PyArg_NoKeywords (or PyArg_NoPositional) calls + generated are only run when the type object is an exact match. -- Issue #12643: `code.InteractiveConsole` now respects `sys.excepthook` when - displaying exceptions. Patch by Aaron Iles. +- Issue #20390: Argument Clinic now fails if you have required parameters after + optional parameters. -- Issue #13579: `string.Formatter` now understands the 'a' conversion specifier. +- Issue #20390: Argument Clinic converters now have a new template they can + inject code into: "modifiers". Code put there is run in the parsing + function after argument parsing but before the call to the impl. -- Issue #15595: Fix ``subprocess.Popen(universal_newlines=True)`` for certain - locales (utf-16 and utf-32 family). Patch by Chris Jerdonek. +- Issue #20376: Argument Clinic now escapes backslashes in docstrings. -- Issue #15477: In cmath and math modules, add workaround for platforms whose - system-supplied log1p function doesn't respect signs of zeros. +- Issue #20381: Argument Clinic now sanity checks the default argument when + c_default is also specified, providing a nice failure message for + disallowed values. -- Issue #15715: `importlib.__import__()` will silence an ImportError when the - use of fromlist leads to a failed import. +- Issue #20189: Argument Clinic now ensures that parser functions for + __new__ are always of type newfunc, the type of the tp_new slot. + Similarly, parser functions for __init__ are now always of type initproc, + the type of tp_init. -- 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 #20189: Argument Clinic now suppresses the docstring for __new__ + and __init__ functions if no docstring is provided in the input. -- Issue #11062: Fix adding a message from file to Babyl mailbox. +- Issue #20189: Argument Clinic now suppresses the "self" parameter in the + impl for @staticmethod functions. -- Issue #15646: Prevent equivalent of a fork bomb when using `multiprocessing` - on Windows without the ``if __name__ == '__main__'`` idiom. +- Issue #20294: Argument Clinic now supports argument parsing for __new__ and + __init__ functions. -IDLE ----- +- Issue #20299: Argument Clinic custom converters may now change the default + value of c_default and py_default with a class member. -- Issue #15678: Fix IDLE menus when started from OS X command line (3.3.0b2 - regression). +- Issue #20287: Argument Clinic's output is now configurable, allowing + delaying its output or even redirecting it to a separate file. -Documentation -------------- +- Issue #20226: Argument Clinic now permits simple expressions + (e.g. "sys.maxsize - 1") as default values for parameters. -- Touched up the Python 2 to 3 porting guide. +- Issue #19936: Added executable bits or shebang lines to Python scripts which + requires them. Disable executable bits and shebang lines in test and + benchmark files in order to prevent using a random system python, and in + source files of modules which don't provide command line interface. Fixed + shebang lines in the unittestgui and checkpip scripts. -- Issue #14674: Add a discussion of the `json` module's standard compliance. - Patch by Chris Rebert. +- Issue #20268: Argument Clinic now supports cloning the parameters and + return converter of existing functions. -- 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 #20228: Argument Clinic now has special support for class special + methods. -- Issue #4966: Bring the sequence docs up to date for the Py3k transition and - the many language enhancements since they were original written. +- Issue #20214: Fixed a number of small issues and documentation errors in + Argument Clinic (see issue for details). -- 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 #20196: Fixed a bug where Argument Clinic did not generate correct + parsing code for functions with positional-only parameters where all arguments + are optional. -- Issue #15640: Document `importlib.abc.Finder` as deprecated. +- Issue #18960: 2to3 and the findnocoding.py script now ignore the source + encoding declaration on the second line if the first line contains anything + except a comment. -- Issue #15630: Add an example for "continue" stmt in the tutorial. Patch by - Daniel Ellis. +- Issue #19723: The marker comments Argument Clinic uses have been changed + to improve readability. -Tests ------ +- Issue #20157: When Argument Clinic renames a parameter because its name + collides with a C keyword, it no longer exposes that rename to PyArg_Parse. -- 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 #20141: Improved Argument Clinic's support for the PyArg_Parse "O!" + format unit. -- Issue #15285: Refactor the approach for testing connect timeouts using two - external hosts that have been configured specifically for this type of test. +- Issue #20144: Argument Clinic now supports simple symbolic constants + as parameter default values. -- Issue #15743: Remove the deprecated method usage in `urllib` tests. Patch by - Jeff Knupp. +- Issue #20143: The line numbers reported in Argument Clinic errors are + now more accurate. -- Issue #15615: Add some tests for the `json` module's handling of invalid input - data. Patch by Kushal Das. +- Issue #20142: Py_buffer variables generated by Argument Clinic are now + initialized with a default value. Build ----- @@@ -3896,870 -6565,877 +3896,870 @@@ IDL 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 #20055: Fix test_shutil under Windows with symlink privileges held. + Patch by Vajrasky Kok. -- Issue #15168: Move `importlib.test` to `test.test_importlib`. +- Issue #20070: Don't run test_urllib2net when network resources are not + enabled. -- Issue #15091: Reactivate a test on UNIX which was failing thanks to a - forgotten `importlib.invalidate_caches()` call. +- Issue #19938: Re-enabled test_bug_1333982 in test_dis, which had been + disabled since 3.0 due to the changes in listcomp handling. -- Issue #15230: Adopted a more systematic approach in the runpy tests. +- Issue #19320: test_tcl no longer fails when wantobjects is false. -- 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 #19919: Fix flaky SSL test. connect_ex() sometimes returns + EWOULDBLOCK on Windows or VMs hosted on Windows. -- Issue #15284: Skip {send,recv}msg tests in test_socket when IPv6 is not - enabled. Patch by Brian Brazil. +- Issue #19912: Added tests for ntpath.splitunc(). -- Issue #15277: Fix a resource leak in support.py when IPv6 is disabled. Patch - by Brian Brazil. +- Issue #19828: Fixed test_site when the whole suite is run with -S. -Build ------ +- Issue #19928: Implemented a test for repr() of cell objects. -- Issue #11715: Fix multiarch detection without having Debian development tools - (dpkg-dev) installed. +- Issue #19535: Fixed test_docxmlrpc, test_functools, test_inspect, and + test_statistics when python is run with -OO. -- 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 #19926: Removed unneeded test_main from test_abstract_numbers. + Patch by Vajrasky Kok. -- 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 #19572: More skipped tests explicitly marked as skipped. -- Issue #8847: Disable COMDAT folding in Windows PGO builds. +- Issue #19595, #19987: Re-enabled a long-disabled test in test_winsound. -- Issue #14018: Fix OS X Tcl/Tk framework checking when using OS X SDKs. +- Issue #19588: Fixed tests in test_random that were silently skipped most + of the time. Patch by Julian Gindi. -- Issue #16256: OS X installer now sets correct permissions for doc directory. +Build +----- -- Issue #15431: Add _freeze_importlib project to regenerate importlib.h on - Windows. Patch by Kristján Valur Jónsson. +- Issue #19728: Enable pip installation by default on Windows. -- Issue #14197: For OS X framework builds, ensure links to the shared library - are created with the proper ABI suffix. +- Issue #16136: Remove VMS support -- Issue #14330: For cross builds, don't use host python, use host search paths - for host compiler. +- Issue #18215: Add script Tools/ssl/test_multiple_versions.py to compile and + run Python's unit tests with multiple versions of OpenSSL. -- Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module. +- Issue #19922: define _INCLUDE__STDC_A1_SOURCE in HP-UX to include mbstate_t + for mbrtowc(). -- Issue #15268: Search curses.h in /usr/include/ncursesw. +- Issue #19788: kill_python(_d).exe is now run as a PreBuildEvent on the + pythoncore sub-project. This should prevent build errors due a previous + build's python(_d).exe still running. +Documentation +------------- -What's New in Python 3.3.0 Beta 1? -================================== +- Issue #20265: Updated some parts of the Using Windows document. -*Release date: 27-Jun-2012* +- Issue #20266: Updated some parts of the Windows FAQ. -Core and Builtins ------------------ +- Issue #20255: Updated the about and bugs pages. -- Fix a (most likely) very rare memory leak when calling main() and not being - able to decode a command-line argument. +- Issue #20253: Fixed a typo in the ipaddress docs that advertised an + illegal attribute name. Found by INADA Naoki. -- Issue #14815: Use Py_ssize_t instead of long for the object hash, to - preserve all 64 bits of hash on Win64. +- Issue #18840: Introduce the json module in the tutorial, and de-emphasize + the pickle module. -- 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 #19845: Updated the Compiling Python on Windows section. -- Issue #11626: Add _SizeT functions to stable ABI. +- Issue #19795: Improved markup of True/False constants. -- Issue #15142: Fix reference leak when deallocating instances of types - created using PyType_FromSpec(). +Tools/Demos +----------- -- Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on - the work by Hirokazu Yamamoto. +- Issue #19659: Added documentation for Argument Clinic. -- Issue #15096: Removed support for ur'' as the raw notation isn't - compatible with Python 2.x's raw unicode strings. +- Issue #19976: Argument Clinic METH_NOARGS functions now always + take two parameters. -- 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. +What's New in Python 3.4.0 Beta 1? +================================== -- Issue #15026: utf-16 encoding is now significantly faster (up to 10x). - Patch by Serhiy Storchaka. +Release date: 2013-11-24 -- 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. +Core and Builtins +----------------- -- Issue #14673: Add Eric Snow's sys.implementation implementation. +- Use the repr of a module name in more places in import, especially + exceptions. -- Issue #15038: Optimize python Locks on Windows. +- Issue #19619: str.encode, bytes.decode and bytearray.decode now use an + internal API to throw LookupError for known non-text encodings, rather + than attempting the encoding or decoding operation and then throwing a + TypeError for an unexpected output type. (The latter mechanism remains + in place for third party non-text encodings) -Library -------- +- Issue #19183: Implement PEP 456 'secure and interchangeable hash algorithm'. + Python now uses SipHash24 on all major platforms. -- Issue #12288: Consider '0' and '0.0' as valid initialvalue - for tkinter SimpleDialog. +- Issue #12892: The utf-16* and utf-32* encoders no longer allow surrogate code + points (U+D800-U+DFFF) to be encoded. The utf-32* decoders no longer decode + byte sequences that correspond to surrogate code points. The surrogatepass + error handler now works with the utf-16* and utf-32* codecs. Based on + patches by Victor Stinner and Kang-Hao (Kenny) Lu. -- Issue #15512: Add a __sizeof__ implementation for parser. - Patch by Serhiy Storchaka. +- Issue #17806: Added keyword-argument support for "tabsize" to + str/bytes.expandtabs(). -- Issue #15469: Add a __sizeof__ implementation for deque objects. - Patch by Serhiy Storchaka. +- Issue #17828: Output type errors in str.encode(), bytes.decode() and + bytearray.decode() now direct users to codecs.encode() or codecs.decode() + as appropriate. -- Issue #15489: Add a __sizeof__ implementation for BytesIO objects. - Patch by Serhiy Storchaka. +- Issue #17828: The interpreter now attempts to chain errors that occur in + codec processing with a replacement exception of the same type that + includes the codec name in the error message. It ensures it only does this + when the creation of the replacement exception won't lose any information. -- Issue #15487: Add a __sizeof__ implementation for buffered I/O objects. - Patch by Serhiy Storchaka. +- Issue #19466: Clear the frames of daemon threads earlier during the + Python shutdown to call objects destructors. So "unclosed file" resource + warnings are now corretly emitted for daemon threads. -- Issue #15514: Correct __sizeof__ support for cpu_set. - Patch by Serhiy Storchaka. +- Issue #19514: Deduplicate some _Py_IDENTIFIER declarations. + Patch by Andrei Dorian Duma. -- Issue #15177: Added dir_fd parameter to os.fwalk(). +- Issue #17936: Fix O(n**2) behaviour when adding or removing many subclasses + of a given type. -- 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 #19428: zipimport now handles errors when reading truncated or invalid + ZIP archive. -- Issue #15164: Change return value of platform.uname() from a - plain tuple to a collections.namedtuple. +- Issue #18408: Add a new PyFrame_FastToLocalsWithError() function to handle + exceptions when merging fast locals into f_locals of a frame. + PyEval_GetLocals() now raises an exception and return NULL on failure. -- Support Mageia Linux in the platform module. +- Issue #19369: Optimized the usage of __length_hint__(). -- Issue #11678: Support Arch linux in the platform module. +- Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the + Python executable and not removed by the linker's optimizer. -- Issue #15118: Change return value of os.uname() and os.times() from - plain tuples to immutable iterable objects with named attributes - (structseq objects). +- Issue #19306: Add extra hints to the faulthandler module's stack + dumps that these are "upside down". -- 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. +Library +------- -- Remove the packaging module, which is not ready for prime time. +- Issue #3158: doctest can now find doctests in functions and methods + written in C. -- Issue #15154: Add "dir_fd" parameter to os.rmdir, remove "rmdir" - parameter from os.remove / os.unlink. +- Issue #13477: Added command line interface to the tarfile module. + Original patch by Berker Peksag. -- 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 #19674: inspect.signature() now produces a correct signature + for some builtins. -- Issue #15156: HTMLParser now uses the new "html.entities.html5" dictionary. +- Issue #19722: Added opcode.stack_effect(), which + computes the stack effect of bytecode instructions. -- 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 #19735: Implement private function ssl._create_stdlib_context() to + create SSLContext objects in Python's stdlib module. It provides a single + configuration point and makes use of SSLContext.load_default_certs(). -- Issue #15114: the strict mode of HTMLParser and the HTMLParseError exception - are deprecated now that the parser is able to parse invalid markup. +- Issue #16203: Add re.fullmatch() function and regex.fullmatch() method, + which anchor the pattern at both ends of the string to match. + Original patch by Matthew Barnett. -- Issue #3665: \u and \U escapes are now supported in unicode regular - expressions. Patch by Serhiy Storchaka. +- Issue #13592: Improved the repr for regular expression pattern objects. + Based on patch by Hugo Lopes Tavares. -- Issue #15153: Added inspect.getgeneratorlocals to simplify white box - testing of generator state updates +- Issue #19641: Added the audioop.byteswap() function to convert big-endian + samples to little-endian and vice versa. -- Issue #13062: Added inspect.getclosurevars to simplify testing stateful - closures +- Issue #15204: Deprecated the 'U' mode in file-like objects. -- Issue #11024: Fixes and additional tests for Time2Internaldate. +- Issue #17810: Implement PEP 3154, pickle protocol 4. -- 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 #19668: Added support for the cp1125 encoding. -- Issue #15008: Implement PEP 362 "Signature Objects". - Patch by Yury Selivanov. +- Issue #19689: Add ssl.create_default_context() factory function. It creates + a new SSLContext object with secure default settings. -- Issue: #15138: base64.urlsafe_{en,de}code() are now 3-4x faster. +- Issue #19727: os.utime(..., None) is now potentially more precise + under Windows. -- 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 #17201: ZIP64 extensions now are enabled by default. Patch by + William Mallard. -- 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 #19292: Add SSLContext.load_default_certs() to load default root CA + certificates from default stores or system stores. By default the method + loads CA certs for authentication of server certs. -- Issue #9527: datetime.astimezone() method will now supply a class - timezone instance corresponding to the system local timezone when - called with no arguments. +- Issue #19673: Add pathlib to the stdlib as a provisional module (PEP 428). -- Issue #14653: email.utils.mktime_tz() no longer relies on system - mktime() when timezone offest is supplied. +- Issue #16596: pdb in a generator now properly skips over yield and + yield from rather than stepping out of the generator into its + caller. (This is essential for stepping through asyncio coroutines.) -- Issue #14684: zlib.compressobj() and zlib.decompressobj() now support the use - of predefined compression dictionaries. Original patch by Sam Rushing. +- Issue #17916: Added dis.Bytecode.from_traceback() and + dis.Bytecode.current_offset to easily display "current instruction" + markers in the new disassembly API (Patch by Claudiu Popa). -- Fix GzipFile's handling of filenames given as bytes objects. +- Issue #19552: venv now supports bootstrapping pip into virtual environments -- Issue #14772: Return destination values from some shutil functions. +- Issue #17134: Finalize interface to Windows' certificate store. Cert and + CRL enumeration are now two functions. enum_certificates() also returns + purpose flags as set of OIDs. -- Issue #15064: Implement context manager protocol for multiprocessing types +- Issue #19555: Restore sysconfig.get_config_var('SO'), (and the distutils + equivalent) with a DeprecationWarning pointing people at $EXT_SUFFIX. -- Issue #15101: Make pool finalizer avoid joining current thread. +- Issue #8813: Add SSLContext.verify_flags to change the verification flags + of the context in order to enable certification revocation list (CRL) + checks or strict X509 rules. -- Issue #14657: The frozen instance of importlib used for bootstrap is now - also the module imported as importlib._bootstrap. +- Issue #18294: Fix the zlib module to make it 64-bit safe. -- Issue #14055: Add __sizeof__ support to _elementtree. +- Issue #19682: Fix compatibility issue with old version of OpenSSL that + was introduced by Issue #18379. -- 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 #14455: plistlib now supports binary plists and has an updated API. -- Issue #15006: Allow equality comparison between naive and aware - time or datetime objects. +- Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on + big-endian platforms. -- 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 #18379: SSLSocket.getpeercert() returns CA issuer AIA fields, OCSP + and CRL distribution points. -- Issue #14059: Implement multiprocessing.Barrier. +- Issue #18138: Implement cadata argument of SSLContext.load_verify_location() + to load CA certificates and CRL from memory. It supports PEM and DER + encoded strings. -- 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 #18775: Add name and block_size attribute to HMAC object. They now + provide the same API elements as non-keyed cryptographic hash functions. -- Issue #13841: Make child processes exit using sys.exit() on Windows. +- Issue #17276: MD5 as default digestmod for HMAC is deprecated. The HMAC + module supports digestmod names, e.g. hmac.HMAC('sha1'). -- Issue #14936: curses_panel was converted to PEP 3121 and PEP 384 API. - Patch by Robin Schreiber. +- Issue #19449: in csv's writerow, handle non-string keys when generating the + error message that certain keys are not in the 'fieldnames' list. -- 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. +- Issue #13633: Added a new convert_charrefs keyword arg to HTMLParser that, + when True, automatically converts all character references. -- Rename adjusted attribute to adjustable in time.get_clock_info() result. +- Issue #2927: Added the unescape() function to the html module. -- Issue #3518: Remove references to non-existent BaseManager.from_address() - method. +- Issue #8402: Added the escape() function to the glob module. -- Issue #13857: Added textwrap.indent() function (initial patch by Ezra - Berch) +- Issue #17618: Add Base85 and Ascii85 encoding/decoding to the base64 module. -- Issue #2736: Added datetime.timestamp() method. +- Issue #19634: time.strftime("%y") now raises a ValueError on AIX when given a + year before 1900. -- Issue #13854: Make multiprocessing properly handle non-integer - non-string argument to SystemExit. +- Fix test.support.bind_port() to not cause an error when Python was compiled + on a system with SO_REUSEPORT defined in the headers but run on a system + with an OS kernel that does not support that reasonably new socket option. -- Issue #12157: Make pool.map() empty iterables correctly. Initial - patch by mouad. +- Fix compilation error under gcc of the ctypes module bundled libffi for arm. -- Issue #11823: disassembly now shows argument counts on calls with keyword args. +- Issue #19448: Add private API to SSL module to lookup ASN.1 objects by OID, + NID, short name and long name. -- Issue #14711: os.stat_float_times() has been deprecated. +- Issue #19282: dbm.open now supports the context management protocol. (Inital + patch by Claudiu Popa) -- LZMAFile now accepts the modes "rb"/"wb"/"ab" as synonyms of "r"/"w"/"a". +- Issue #8311: Added support for writing any bytes-like objects in the aifc, + sunau, and wave modules. -- 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. +- Issue #5202: Added support for unseekable files in the wave module. -- BZ2File.__init__() and LZMAFile.__init__() now accept a file object as their - first argument, rather than requiring a separate "fileobj" argument. +- Issue #19544 and Issue #1180: Restore global option to ignore + ~/.pydistutils.cfg in Distutils, accidentally removed in backout of + distutils2 changes. -- gzip.open() now accepts file objects as well as filenames. +- Issue #19523: Closed FileHandler leak which occurred when delay was set. -- 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 #19544 and Issue #6516: Restore support for --user and --group + parameters to sdist command accidentally rolled back as part of the + distutils2 rollback. -- Issue #14989: Make the CGI enable option to http.server available via command - line. +- Issue #13674: Prevented time.strftime from crashing on Windows when given + a year before 1900 and a format of %y. -- Issue #14987: Add a missing import statement to inspect. +- Issue #19406: implementation of the ensurepip module (part of PEP 453). + Patch by Donald Stufft and Nick Coghlan. -- 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 #19544 and Issue #6286: Restore use of urllib over http allowing use + of http_proxy for Distutils upload command, a feature accidentally lost + in the rollback of distutils2. -- Issue #14969: Better handling of exception chaining in contextlib.ExitStack +- Issue #19544 and Issue #7457: Restore the read_pkg_file method to + distutils.dist.DistributionMetadata accidentally removed in the undo of + distutils2. -- Issue #14963: Convert contextlib.ExitStack.__exit__ to use an iterative - algorithm (Patch by Alon Horev) +- Issue #16685: Added support for any bytes-like objects in the audioop module. + Removed support for strings. -- Issue #14785: Add sys._debugmallocstats() to help debug low-level memory - allocation issues +- Issue #7171: Add Windows implementation of ``inet_ntop`` and ``inet_pton`` + to socket module. Patch by Atsuo Ishimoto. -- Issue #14443: Ensure that .py files are byte-compiled with the correct Python - executable within bdist_rpm even on older versions of RPM +- Issue #19261: Added support for writing 24-bit samples in the sunau module. -C-API ------ +- Issue #1097797: Added CP273 encoding, used on IBM mainframes in + Germany and Austria. Mapping provided by Michael Bierenfeld. -- Issue #15146: Add PyType_FromSpecWithBases. Patch by Robin Schreiber. +- Issue #1575020: Fixed support of 24-bit wave files on big-endian platforms. -- Issue #15042: Add PyState_AddModule and PyState_RemoveModule. Add version - guard for Py_LIMITED_API additions. Patch by Robin Schreiber. +- Issue #19378: Fixed a number of cases in the dis module where the new + "file" parameter was not being honoured correctly -- Issue #13783: Inadvertent additions to the public C API in the PEP 380 - implementation have either been removed or marked as private interfaces. +- Issue #19378: Removed the "dis.Bytecode.show_info" method -Extension Modules ------------------ +- Issue #19378: Renamed the "dis.Bytecode.display_code" method to + "dis.Bytecode.dis" and converted it to returning a string rather than + printing output. -- Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c. +- Issue #19378: the "line_offset" parameter in the new "dis.get_instructions" + API has been renamed to "first_line" (and the default value and usage + changed accordingly). This should reduce confusion with the more common use + of "offset" in the dis docs to refer to bytecode offsets. -IDLE ----- +- Issue #18678: Corrected spwd struct member names in spwd module: + sp_nam->sp_namp, and sp_pwd->sp_pwdp. The old names are kept as extra + structseq members, for backward compatibility. -- Issue #9803: Don't close IDLE on saving if breakpoint is open. - Patch by Roger Serwy. +- Issue #6157: Fixed tkinter.Text.debug(). tkinter.Text.bbox() now raises + TypeError instead of TclError on wrong number of arguments. Original patch + by Guilherme Polo. -- Issue #14962: Update text coloring in IDLE shell window after changing - options. Patch by Roger Serwy. +- Issue #10197: Rework subprocess.get[status]output to use subprocess + functionality and thus to work on Windows. Patch by Nick Coghlan -Documentation -------------- +- Issue #6160: The bbox() method of tkinter.Spinbox now returns a tuple of + integers instead of a string. Based on patch by Guilherme Polo. -- Issue #15176: Clarified behavior, documentation, and implementation - of os.listdir(). +- Issue #19403: contextlib.redirect_stdout is now reentrant -- 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 #19286: Directories in ``package_data`` are no longer added to + the filelist, preventing failure outlined in the ticket. -- Issue #15081: Document PyState_FindModule. - Patch by Robin Schreiber. +- Issue #19480: HTMLParser now accepts all valid start-tag names as defined + by the HTML5 standard. -- Issue #14814: Added first draft of ipaddress module API reference +- Issue #15114: The html.parser module now raises a DeprecationWarning when the + strict argument of HTMLParser or the HTMLParser.error method are used. -Tests ------ +- Issue #19410: Undo the special-casing removal of '' for + importlib.machinery.FileFinder. -- Issue #15187: Bugfix: remove temporary directories test_shutil was leaving - behind. +- Issue #19424: Fix the warnings module to accept filename containing surrogate + characters. -- 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". +- Issue #19435: Fix directory traversal attack on CGIHttpRequestHandler. -- test_nntplib now tolerates being run from behind NNTP gateways that add - "X-Antivirus" headers to articles +- Issue #19227: Remove pthread_atfork() handler. The handler was added to + solve #18747 but has caused issues. -- Issue #15043: test_gdb is now skipped entirely if gdb security settings - block loading of the gdb hooks +- Issue #19420: Fix reference leak in module initalization code of + _hashopenssl.c -- Issue #14963: Add test cases for exception handling behaviour - in contextlib.ExitStack (Initial patch by Alon Horev) +- Issue #19329: Optimized compiling charsets in regular expressions. -Build ------ +- Issue #19227: Try to fix deadlocks caused by re-seeding then OpenSSL + pseudo-random number generator on fork(). -- 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 #16037: HTTPMessage.readheaders() raises an HTTPException when more than + 100 headers are read. Adapted from patch by Jyrki Pulliainen. -- Issue #14225: Fix Unicode support for curses (#12567) on OS X +- Issue #16040: CVE-2013-1752: nntplib: Limit maximum line lengths to 2048 to + prevent readline() calls from consuming too much memory. Patch by Jyrki + Pulliainen. -- Issue #14928: Fix importlib bootstrap issues by using a custom executable - (Modules/_freeze_importlib) to build Python/importlib.h. +- Issue #16041: CVE-2013-1752: poplib: Limit maximum line lengths to 2048 to + prevent readline() calls from consuming too much memory. Patch by Jyrki + Pulliainen. +- Issue #17997: Change behavior of ``ssl.match_hostname()`` to follow RFC 6125, + for security reasons. It now doesn't match multiple wildcards nor wildcards + inside IDN fragments. -What's New in Python 3.3.0 Alpha 4? -=================================== +- Issue #16039: CVE-2013-1752: Change use of readline in imaplib module to limit + line length. Patch by Emil Lind. -*Release date: 31-May-2012* +- Issue #19330: the unnecessary wrapper functions have been removed from the + implementations of the new contextlib.redirect_stdout and + contextlib.suppress context managers, which also ensures they provide + reasonable help() output on instances -Core and Builtins ------------------ +- Issue #19393: Fix symtable.symtable function to not be confused when there are + functions or classes named "top". -- Issue #14835: Make plistlib output empty arrays & dicts like OS X. - Patch by Sidney San Martín. +- Issue #18685: Restore re performance to pre-PEP 393 levels. -- Issue #14744: Use the new _PyUnicodeWriter internal API to speed up - str%args and str.format(args). +- Issue #19339: telnetlib module is now using time.monotonic() when available + to compute timeout. -- Issue #14930: Make memoryview objects weakrefable. +- Issue #19399: fix sporadic test_subprocess failure. -- Issue #14775: Fix a potential quadratic dict build-up due to the garbage - collector repeatedly trying to untrack dicts. +- Issue #13234: Fix os.listdir to work with extended paths on Windows. + Patch by Santoso Wijaya. -- Issue #14857: fix regression in references to PEP 3135 implicit __class__ - closure variable (Reopens issue #12370) +- Issue #19375: The site module adding a "site-python" directory to sys.path, + if it exists, is now deprecated. -- Issue #14712 (PEP 405): Virtual environments. Implemented by Vinay Sajip. +- Issue #19379: Lazily import linecache in the warnings module, to make + startup with warnings faster until a warning gets printed. -- Issue #14660 (PEP 420): Namespace packages. Implemented by Eric Smith. +- Issue #19288: Fixed the "in" operator of dbm.gnu databases for string + argument. Original patch by Arfrever Frehtes Taifersar Arahesis. -- 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 #19287: Fixed the "in" operator of dbm.ndbm databases for string + argument. Original patch by Arfrever Frehtes Taifersar Arahesis. -- 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 #19327: Fixed the working of regular expressions with too big charset. -- Issue #14624: UTF-16 decoding is now 3x to 4x faster on various inputs. - Patch by Serhiy Storchaka. +- Issue #17400: New 'is_global' attribute for ipaddress to tell if an address + is allocated by IANA for global or private networks. -- asdl_seq and asdl_int_seq are now Py_ssize_t sized. +- Issue #19350: Increasing the test coverage of macurl2path. Patch by Colin + Williams. -- Issue #14133 (PEP 415): Implement suppression of __context__ display with an - attribute on BaseException. This replaces the original mechanism of PEP 409. +- Issue #19365: Optimized the parsing of long replacement string in re.sub*() + functions. -- Issue #14417: Mutating a dict during lookup now restarts the lookup instead - of raising a RuntimeError (undoes issue #14205). +- Issue #19352: Fix unittest discovery when a module can be reached + through several paths (e.g. under Debian/Ubuntu with virtualenv). -- Issue #14738: Speed-up UTF-8 decoding on non-ASCII data. Patch by Serhiy - Storchaka. +- Issue #15207: Fix mimetypes to read from correct part of Windows registry + Original patch by Dave Chambers -- Issue #14700: Fix two broken and undefined-behaviour-inducing overflow checks - in old-style string formatting. +- Issue #16595: Add prlimit() to resource module. -Library -------- +- Issue #19324: Expose Linux-specific constants in resource module. -- Issue #14690: Use monotonic clock instead of system clock in the sched, - subprocess and trace modules. +- Load SSL's error strings in hashlib. -- Issue #14443: Tell rpmbuild to use the correct version of Python in - bdist_rpm. Initial patch by Ross Lagerwall. +- Issue #18527: Upgrade internal copy of zlib to 1.2.8. -- Issue #12515: email now registers a defect if it gets to EOF while parsing - a MIME part without seeing the closing MIME boundary. +- Issue #19274: Add a filterfunc parameter to PyZipFile.writepy. -- 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 #8964: fix platform._sys_version to handle IronPython 2.6+. + Patch by Martin Matusiak. -- 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 #19413: Restore pre-3.3 reload() semantics of re-finding modules. -- 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 #18958: Improve error message for json.load(s) while passing a string + that starts with a UTF-8 BOM. -- Issue #8739: Updated smtpd to support RFC 5321, and added support for the - RFC 1870 SIZE extension. +- Issue #19307: Improve error message for json.load(s) while passing objects + of the wrong type. -- Issue #665194: Added a localtime function to email.utils to provide an - aware local datetime for use in setting Date headers. +- Issue #16038: CVE-2013-1752: ftplib: Limit amount of data read by + limiting the call to readline(). Original patch by Michał + Jastrzębski and Giampaolo Rodola. -- Issue #12586: Added new provisional policies that implement convenient - unicode support for email headers. See What's New for details. +- Issue #17087: Improved the repr for regular expression match objects. -- 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. +Tests +----- -- Issue #14876: Use user-selected font for highlight configuration. +- Issue #19664: test_userdict's repr test no longer depends on the order + of dict elements. -- Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals. - Have ascii characters in help. +- Issue #19440: Clean up test_capi by removing an unnecessary __future__ + import, converting from test_main to unittest.main, and running the + _testcapi module tests as subTests of a unittest TestCase method. -- Issue #14548: Make multiprocessing finalizers check pid before - running to cope with possibility of gc running just after fork. +- Issue #19378: the main dis module tests are now run with both stdout + redirection *and* passing an explicit file parameter -- Issue #14036: Add an additional check to validate that port in urlparse does - not go in illegal range and returns None. +- Issue #19378: removed the not-actually-helpful assertInstructionMatches + and assertBytecodeExactlyMatches helpers from bytecode_helper -- Issue #14862: Add missing names to os.__all__ +- Issue #18702: All skipped tests now reported as skipped. -- Issue #14875: Use float('inf') instead of float('1e66666') in the json module. +- Issue #19439: interpreter embedding tests are now executed on Windows + (Patch by Zachary Ware) -- Issue #13585: Added contextlib.ExitStack +- Issue #19085: Added basic tests for all tkinter widget options. -- PEP 3144, Issue #14814: Added the ipaddress module +- Issue #19384: Fix test_py_compile for root user, patch by Claudiu Popa. -- Issue #14426: Correct the Date format in Expires attribute of Set-Cookie - Header in Cookie.py. +Documentation +------------- -- 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 #18326: Clarify that list.sort's arguments are keyword-only. Also, + attempt to reduce confusion in the glossary by not saying there are + different "types" of arguments and parameters. -- Issue #13152: Allow to specify a custom tabsize for expanding tabs in - textwrap. Patch by John Feuerstein. +Build +----- -- Issue #14721: Send the correct 'Content-length: 0' header when the body is an - empty string ''. Initial Patch contributed by Arve Knudsen. +- Issue #19358: "make clinic" now runs the Argument Clinic preprocessor + over all CPython source files. -- Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for - ports stricter. +- Update SQLite to 3.8.1, xz to 5.0.5, and Tcl/Tk to 8.6.1 on Windows. -- Issue #9374: Generic parsing of query and fragment portions of url for any - scheme. Supported both by RFC3986 and RFC2396. +- Issue #16632: Enable DEP and ASLR on Windows. -- 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 #17791: Drop PREFIX and EXEC_PREFIX definitions from PC/pyconfig.h -- Issue #12098: multiprocessing on Windows now starts child processes - using the same sys.flags as the current process. Initial patch by - Sergey Mezentsev. +- Add workaround for VS 2010 nmake clean issue. VS 2010 doesn't set up PATH + for nmake.exe correctly. -- Issue #13031: Small speed-up for tarfile when unzipping tarfiles. - Patch by Justin Peel. +- Issue #19550: Implement Windows installer changes of PEP 453 (ensurepip). -- Issue #14780: urllib.request.urlopen() now has a ``cadefault`` argument - to use the default certificate store. Initial patch by James Oakley. +- Issue #19520: Fix compiler warning in the _sha3 module on 32bit Windows. -- Issue #14829: Fix bisect and range() indexing with large indices - (>= 2 ** 32) under 64-bit Windows. +- Issue #19356: Avoid using a C variabled named "_self", it's a reserved + word in some C compilers. -- Issue #14732: The _csv module now uses PEP 3121 module initialization. - Patch by Robin Schreiber. +- Issue #15792: Correct build options on Win64. Patch by Jeremy Kloth. -- Issue #14809: Add HTTP status codes introduced by RFC 6585 to http.server - and http.client. Patch by EungJun Yi. +- Issue #19373: Apply upstream change to Tk 8.5.15 fixing OS X 10.9 + screen refresh problem for OS X installer build. -- 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 #19649: On OS X, the same set of file names are now installed + in bin directories for all configurations: non-framework vs framework, + and single arch vs universal builds. pythonx.y-32 is now always + installed for 64-bit/32-bit universal builds. The obsolete and + undocumented pythonw* symlinks are no longer installed anywhere. -- Issue #14773: Fix os.fwalk() failing on dangling symlinks. +- Issue #19553: PEP 453 - "make install" and "make altinstall" now install or + upgrade pip by default, using the bundled pip provided by the new ensurepip + module. A new configure option, --with-ensurepip[=upgrade|install|no], is + available to override the default ensurepip "--upgrade" option. The option + can also be set with "make [alt]install ENSUREPIP=[upgrade|install\no]". -- Issue #12541: Be lenient with quotes around Realm field of HTTP Basic - Authentation in urllib2. +- Issue #19551: PEP 453 - the OS X installer now installs pip by default. -- Issue #14807: move undocumented tarfile.filemode() to stat.filemode() and add - doc entry. Add tarfile.filemode alias with deprecation warning. +- Update third-party libraries for OS X installers: xz 5.0.3 -> 5.0.5, + SQLite 3.7.13 -> 3.8.1 -- Issue #13815: TarFile.extractfile() now returns io.BufferedReader objects. +- Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.4.0b1. + Some third-party projects, such as Matplotlib and PIL/Pillow, + depended on being able to build with Tcl and Tk frameworks in + /Library/Frameworks. -- Issue #14532: Add a secure_compare() helper to the hmac module, to mitigate - timing attacks. Patch by Jon Oberheide. +Tools/Demos +----------- -- Add importlib.util.resolve_name(). +- Issue #19730: Argument Clinic now supports all the existing PyArg + "format units" as legacy converters, as well as two new features: + "self converters" and the "version" directive. -- Issue #14366: Support lzma compression in zip files. - Patch by Serhiy Storchaka. +- Issue #19552: pyvenv now bootstraps pip into virtual environments by + default (pass --without-pip to request the old behaviour) -- Issue #13959: Introduce importlib.find_loader() and document - imp.find_module/load_module as deprecated. +- Issue #19390: Argument Clinic no longer accepts malformed Python + and C ids. -- 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(). +What's New in Python 3.4.0 Alpha 4? +=================================== -- 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(). +Release date: 2013-10-20 -- Issue #14662: Prevent shutil failures on OS X when destination does not - support chflag operations. Patch by Hynek Schlawack. +Core and Builtins +----------------- -- Issue #14157: Fix time.strptime failing without a year on February 29th. - Patch by Hynek Schlawack. +- Issue #19301: Give classes and functions that are explicitly marked global a + global qualname. -- Issue #14753: Make multiprocessing's handling of negative timeouts - the same as it was in Python 3.2. +- Issue #19279: UTF-7 decoder no longer produces illegal strings. -- Issue #14583: Fix importlib bug when a package's __init__.py would first - import one of its modules then raise an error. +- Issue #16612: Add "Argument Clinic", a compile-time preprocessor for + C files to generate argument parsing code. (See PEP 436.) -- Issue #14741: Fix missing support for Ellipsis ('...') in parser module. +- Issue #18810: Shift stat calls in importlib.machinery.FileFinder such that + the code is optimistic that if something exists in a directory named exactly + like the possible package being searched for that it's in actuality a + directory. -- Issue #14697: Fix missing support for set displays and set comprehensions in - parser module. +- Issue #18416: importlib.machinery.PathFinder now treats '' as the cwd and + importlib.machinery.FileFinder no longer special-cases '' to '.'. This leads + to modules imported from cwd to now possess an absolute file path for + __file__ (this does not affect modules specified by path on the CLI but it + does affect -m/runpy). It also allows FileFinder to be more consistent by not + having an edge case. -- Issue #14701: Fix missing support for 'raise ... from' in parser module. +- Issue #4555: All exported C symbols are now prefixed with either + "Py" or "_Py". -- Add support for timeouts to the acquire() methods of - multiprocessing's lock/semaphore/condition proxies. +- Issue #19219: Speed up marshal.loads(), and make pyc files slightly + (5% to 10%) smaller. -- Issue #13989: Add support for text mode to gzip.open(). +- Issue #19221: Upgrade Unicode database to version 6.3.0. -- 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 #16742: The result of the C callback PyOS_ReadlineFunctionPointer must + now be a string allocated by PyMem_RawMalloc() or PyMem_RawRealloc() (or NULL + if an error occurred), instead of a string allocated by PyMem_Malloc() or + PyMem_Realloc(). -- Issue #14127 and #10148: shutil.copystat now preserves exact mtime and atime - on filesystems providing nanosecond resolution. +- Issue #19199: Remove ``PyThreadState.tick_counter`` field -IDLE ----- +- Fix macro expansion of _PyErr_OCCURRED(), and make sure to use it in at + least one place so as to avoid regressions. -- Issue #14958: Change IDLE systax highlighting to recognize all string and - byte literals supported in Python 3.3. +- Issue #19087: Improve bytearray allocation in order to allow cheap popping + of data at the front (slice deletion). -- Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu. +- Issue #19014: memoryview.cast() is now allowed on zero-length views. -- Issue #14929: Stop IDLE 3.x from closing on Unicode decode errors when - grepping. Patch by Roger Serwy. +- Issue #18690: memoryview is now automatically registered with + collections.abc.Sequence -- 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. +- Issue #19078: memoryview now correctly supports the reversed builtin + (Patch by Claudiu Popa) -Tools/Demos ------------ +Library +------- -- Issue #14695: Bring Tools/parser/unparse.py support up to date with - the Python 3.3 Grammar. +- Issue #17457: unittest test discovery now works with namespace packages. + Patch by Claudiu Popa. -Build ------ +- Issue #18235: Fix the sysconfig variables LDSHARED and BLDSHARED under AIX. + Patch by David Edelsohn. -- Issue #14472: Update .gitignore. Patch by Matej Cepl. +- Issue #18606: Add the new "statistics" module (PEP 450). Contributed + by Steven D'Aprano. -- Upgrade Windows library versions: bzip 1.0.6, OpenSSL 1.0.1c. +- Issue #12866: The audioop module now supports 24-bit samples. -- Issue #14693: Under non-Windows platforms, hashlib's fallback modules are - always compiled, even if OpenSSL is present at build time. +- Issue #19254: Provide an optimized Python implementation of pbkdf2_hmac. -- Issue #13210: Windows build now uses VS2010, ported from VS2008. +- Issues #19201, Issue #19222, Issue #19223: Add "x" mode (exclusive creation) + in opening file to bz2, gzip and lzma modules. Patches by Tim Heaney and + Vajrasky Kok. -C-API ------ +- Fix a reference count leak in _sre. -- 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. +- Issue #19262: Initial check in of the 'asyncio' package (a.k.a. Tulip, + a.k.a. PEP 3156). There are no docs yet, and the PEP is slightly + out of date with the code. This module will have *provisional* status + in Python 3.4. -Documentation -------------- +- Issue #19276: Fixed the wave module on 64-bit big-endian platforms. -- Issue #14863: Update the documentation of os.fdopen() to reflect the - fact that it's only a thin wrapper around open() anymore. +- Issue #19266: Rename the new-in-3.4 ``contextlib.ignore`` context manager + to ``contextlib.suppress`` in order to be more consistent with existing + descriptions of that operation elsewhere in the language and standard + library documentation (Patch by Zero Piraeus). -- Issue #14588: The language reference now accurately documents the Python 3 - class definition process. Patch by Nick Coghlan. +- Issue #18891: Completed the new email package (provisional) API additions + by adding new classes EmailMessage, MIMEPart, and ContentManager. -- Issue #14943: Correct a default argument value for winreg.OpenKey - and correctly list the argument names in the function's explanation. +- Issue #18281: Unused stat constants removed from `tarfile`. +- Issue #18999: Multiprocessing now supports 'contexts' with the same API + as the module, but bound to specified start methods. -What's New in Python 3.3.0 Alpha 3? -=================================== +- Issue #18468: The re.split, re.findall, and re.sub functions and the group() + and groups() methods of match object now always return a string or a bytes + object. -*Release date: 01-May-2012* +- Issue #18725: The textwrap module now supports truncating multiline text. -Core and Builtins ------------------ +- Issue #18776: atexit callbacks now display their full traceback when they + raise an exception. -- Issue #14699: Fix calling the classmethod descriptor directly. +- Issue #17827: Add the missing documentation for ``codecs.encode`` and + ``codecs.decode``. -- Issue #14433: Prevent msvcrt crash in interactive prompt when stdin is closed. +- Issue #19218: Rename collections.abc to _collections_abc in order to + speed up interpreter start. -- Issue #14521: Make result of float('nan') and float('-nan') more consistent - across platforms. +- Issue #18582: Add 'pbkdf2_hmac' to the hashlib module. It implements PKCS#5 + password-based key derivation functions with HMAC as pseudorandom function. -- Issue #14646: __import__() sets __loader__ if the loader did not. +- Issue #19131: The aifc module now correctly reads and writes sampwidth of + compressed streams. -- Issue #14605: No longer have implicit entries in sys.meta_path. If - sys.meta_path is found to be empty, raise ImportWarning. +- Issue #19209: Remove import of copyreg from the os module to speed up + interpreter startup. stat_result and statvfs_result are now hard-coded to + reside in the os module. -- 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 #19205: Don't import the 're' module in site and sysconfig module to + speed up interpreter start. -- 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 #9548: Add a minimal "_bootlocale" module that is imported by the + _io module instead of the full locale module. - - Issue #18764: remove the 'print' alias for the PDB 'p' command so that it no -- Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError - when repr() or str() is called on such an object. ++- Issue #18764: Remove the 'print' alias for the PDB 'p' command so that it no + longer shadows the print function. - - Issue #19158: a rare race in BoundedSemaphore could allow .release() too -- Issue #14658: Fix binding a special method to a builtin implementation of a - special method with a different name. ++- Issue #19158: A rare race in BoundedSemaphore could allow .release() too + often. -- Issue #14630: Fix a memory access bug for instances of a subclass of int - with value 0. +- Issue #15805: Add contextlib.redirect_stdout(). -- Issue #14339: Speed improvements to bin, oct and hex functions. Patch by - Serhiy Storchaka. +- Issue #18716: Deprecate the formatter module. -- 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 #10712: 2to3 has a new "asserts" fixer that replaces deprecated names + of unittest methods (e.g. failUnlessEqual -> assertEqual). -- 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 #18037: 2to3 now escapes '\u' and '\U' in native strings. -- Issue #14612: Fix jumping around with blocks by setting f_lineno. +- Issue #17839: base64.decodebytes and base64.encodebytes now accept any + object that exports a 1 dimensional array of bytes (this means the same + is now also true for base64_codec) -- Issue #14592: Attempting a relative import w/o __package__ or __name__ set in - globals raises a KeyError. +- Issue #19132: The pprint module now supports compact mode. -- Issue #14607: Fix keyword-only arguments which started with ``__``. +- Issue #19137: The pprint module now correctly formats instances of set and + frozenset subclasses. -- 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 #10042: functools.total_ordering now correctly handles + NotImplemented being returned by the underlying comparison function (Patch + by Katie Miller) -- 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. +- Issue #19092: contextlib.ExitStack now correctly reraises exceptions + from the __exit__ callbacks of inner context managers (Patch by Hrvoje + Nikšić) -- __import__() now matches PEP 328 and documentation by defaulting 'index' to 0 - instead of -1 and removing support for negative values. +- Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except + when necessary. Patch by Oscar Benjamin. -- Issue #2377: Make importlib the implementation of __import__(). +- Issue #5845: In site.py, only load readline history from ~/.python_history + if no history has been read already. This avoids double writes to the + history file at shutdown. -- 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. +- Properly initialize all fields of a SSL object after allocation. -- Issue #14474: Save and restore exception state in thread.start_new_thread() - while writing error message if the thread leaves a unhandled exception. +- Issue #19095: SSLSocket.getpeercert() now raises ValueError when the + SSL handshake hasn't been done. -- Issue #13019: Fix potential reference leaks in bytearray.extend(). Patch - by Suman Saha. +- Issue #4366: Fix building extensions on all platforms when --enable-shared + is used. -Library -------- +- Issue #19030: Fixed `inspect.getmembers` and `inspect.classify_class_attrs` + to attempt activating descriptors before falling back to a __dict__ search + for faulty descriptors. `inspect.classify_class_attrs` no longer returns + Attributes whose home class is None. -- Issue #14768: os.path.expanduser('~/a') doesn't works correctly when HOME is '/'. +C API +----- -- Issue #14371: Support bzip2 in zipfile module. Patch by Serhiy Storchaka. +- Issue #1772673: The type of `char*` arguments now changed to `const char*`. -- Issue #13183: Fix pdb skipping frames after hitting a breakpoint and running - step. Patch by Xavier de Gaye. +- Issue #16129: Added a `Py_SetStandardStreamEncoding` pre-initialization API + to allow embedding applications like Blender to force a particular + encoding and error handler for the standard IO streams (initial patch by + Bastien Montagne) -- Issue #14696: Fix parser module to understand 'nonlocal' declarations. +Tests +----- -- Issue #10941: Fix imaplib.Internaldate2tuple to produce correct result near - the DST transition. Patch by Joe Peterson. +- Issue #19275: Fix test_site on AMD64 Snow Leopard -- Issue #9154: Fix parser module to understand function annotations. +- Issue #14407: Fix unittest test discovery in test_concurrent_futures. -- Issue #6085: In http.server.py SimpleHTTPServer.address_string returns the - client ip address instead client hostname. Patch by Charles-François Natali. +- Issue #18919: Unified and extended tests for audio modules: aifc, sunau and + wave. -- Issue #14309: Deprecate time.clock(), use time.perf_counter() or - time.process_time() instead. +- Issue #18714: Added tests for ``pdb.find_function()``. -- 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(). +Documentation +------------- -- Issue #14646: importlib.util.module_for_loader() now sets __loader__ and - __package__ (when possible). +- Issue #18758: Fixed and improved cross-references. -- 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 #18972: Modernize email examples and use the argparse module in them. -- Issue #4892: multiprocessing Connections can now be transferred over - multiprocessing Connections. Patch by Richard Oudkerk (sbt). +Build +----- -- Issue #14160: TarFile.extractfile() failed to resolve symbolic links when - the links were not located in an archive subdirectory. +- Issue #19130: Correct PCbuild/readme.txt, Python 3.3 and 3.4 require VS 2010. -- Issue #14638: pydoc now treats non-string __name__ values as if they - were missing, instead of raising an error. +- Issue #15663: Update OS X 10.6+ installer to use Tcl/Tk 8.5.15. -- Issue #13684: Fix httplib tunnel issue of infinite loops for certain sites - which send EOF without trailing \r\n. +- Issue #14499: Fix several problems with OS X universal build support: + 1. ppc arch detection for extension module builds broke with Xcode 5 + 2. ppc arch detection in configure did not work on OS X 10.4 + 3. -sysroot and -arch flags were unnecessarily duplicated + 4. there was no obvious way to configure an intel-32 only build. -- Issue #14605: Add importlib.abc.FileLoader, importlib.machinery.(FileFinder, - SourceFileLoader, SourcelessFileLoader, ExtensionFileLoader). +- Issue #19019: Change the OS X installer build script to use CFLAGS instead + of OPT for special build options. By setting OPT, some compiler-specific + options like -fwrapv were overridden and thus not used, which could result + in broken interpreters when building with clang. -- 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. +What's New in Python 3.4.0 Alpha 3? +=================================== -- Issue #14629: tokenizer.detect_encoding will specify the filename in the - SyntaxError exception if found at readline.__self__.name. +Release date: 2013-09-29 -- Issue #14629: Raise SyntaxError in tokenizer.detect_encoding if the - first two lines have non-UTF-8 characters without an encoding declaration. +Core and Builtins +----------------- -- Issue #14308: Fix an exception when a "dummy" thread is in the threading - module's active list after a fork(). +- Issue #18818: The "encodingname" part of PYTHONIOENCODING is now optional. -- 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 #19098: Prevent overflow in the compiler when the recursion limit is set + absurdly high. -- Issue #14087: multiprocessing: add Condition.wait_for(). Patch by sbt. +Library +------- -- Issue #14538: HTMLParser can now parse correctly start tags that contain - a bare '/'. +- Issue #18929: `inspect.classify_class_attrs()` now correctly finds class + attributes returned by `dir()` that are located in the metaclass. -- Issue #14452: SysLogHandler no longer inserts a UTF-8 BOM into the message. +- Issue #18950: Fix miscellaneous bugs in the sunau module. + Au_read.readframes() now updates current file position and reads correct + number of frames from multichannel stream. Au_write.writeframesraw() now + correctly updates current file position. Au_read.getnframes() now returns an + integer (as in Python 2). Au_read and Au_write now correctly works with file + object if start file position is not a zero. -- Issue #14386: Expose the dict_proxy internal type as types.MappingProxyType. +- Issue #18594: The fast path for collections.Counter() was never taken + due to an over-restrictive type check. -- Issue #13959: Make imp.reload() always use a module's __loader__ to perform - the reload. +- Issue #19053: ZipExtFile.read1() with non-zero argument no more returns empty + bytes until end of data. -- Issue #13959: Add imp.py and rename the built-in module to _imp, allowing for - re-implementing parts of the module in pure Python. +- logging: added support for Unix domain sockets to SocketHandler and + DatagramHandler. -- Issue #13496: Fix potential overflow in bisect.bisect algorithm when applied - to a collection of size > sys.maxsize / 2. +- Issue #18996: TestCase.assertEqual() now more cleverly shorten differing + strings in error report. -- Have importlib take advantage of ImportError's new 'name' and 'path' - attributes. +- Issue #19034: repr() for tkinter.Tcl_Obj now exposes string reperesentation. -- 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. +- Issue #18978: ``urllib.request.Request`` now allows the method to be + indicated on the class and no longer sets it to None in ``__init__``. -- trace.CoverageResults.is_ignored_filename() now ignores any name that starts - with "<" and ends with ">" instead of special-casing "" and - "