| +++++++++++ |
| Python News |
| +++++++++++ |
| |
| (editors: check NEWS.help for information about editing NEWS using ReST.) |
| |
| What's New in Python 3.1 beta 1? |
| ================================ |
| |
| *Release date: XXXX-XX-XX* |
| |
| Core and Builtins |
| ----------------- |
| |
| - Issue #5799: ntpath (ie, os.path on Windows) fully supports UNC pathnames |
| in all operations, including splitdrive, split, etc. splitunc() now issues |
| a PendingDeprecation warning. |
| |
| - Issue #5920: For float.__format__, change the behavior with the |
| empty presentation type (that is, not one of 'e', 'f', 'g', or 'n') |
| to be like 'g' but with at least one decimal point and with a |
| default precision of 12. Previously, the behavior the same but with |
| a default precision of 6. This more closely matches str(), and |
| reduces surprises when adding alignment flags to the empty |
| presentation type. This also affects the new complex.__format__ in |
| the same way. |
| |
| - Implement PEP 383, Non-decodable Bytes in System Character Interfaces. |
| |
| - Issue #5890: in subclasses of 'property' the __doc__ attribute was |
| shadowed by classtype's, even if it was None. property now |
| inserts the __doc__ into the subclass instance __dict__. |
| |
| - Issue #4426: The UTF-7 decoder was too strict and didn't accept some legal |
| sequences. Patch by Nick Barnes and Victor Stinner. |
| |
| - Issue #3672: Reject surrogates in utf-8 codec; add surrogates error handler. |
| |
| - Issue #5883: In the io module, the BufferedIOBase and TextIOBase ABCs have |
| received a new method, detach(). detach() disconnects the underlying stream |
| from the buffer or text IO and returns it. |
| |
| - Issue #5859: Remove switch from '%f' to '%g'-style formatting for |
| floats with absolute value over 1e50. Also remove length |
| restrictions for float formatting: '%.67f' % 12.34 and '%.120e' % |
| 12.34 no longer raise an exception. |
| |
| - Issue #1588: Add complex.__format__. For example, |
| format(complex(1, 2./3), '.5') now produces a sensible result. |
| |
| - Issue #5864: Fix empty format code formatting for floats so that it |
| never gives more than the requested number of significant digits. |
| |
| - Issue #5793: Rationalize isdigit / isalpha / tolower, etc. Includes |
| new Py_ISDIGIT / Py_ISALPHA / Py_TOLOWER, etc. in pctypes.h. |
| |
| - Issue #5835: Deprecate PyOS_ascii_formatd. |
| |
| - Issue #4971: Fix titlecase for characters that are their own |
| titlecase, but not their own uppercase. |
| |
| - Issue #5283: Setting __class__ in __del__ caused a segfault. |
| |
| - Issue #5816: complex(repr(z)) now recovers z exactly, even when |
| z involves nans, infs or negative zeros. |
| |
| - Issue #3166: Make int -> float conversions correctly rounded. |
| |
| - Issue #1869 (and many duplicates): make round(x, n) correctly |
| rounded for a float x, by using the decimal <-> binary conversions |
| from Python/dtoa.c. As a consequence, (e.g.) round(x, 2) now |
| consistently agrees with format(x, '.2f'). |
| |
| - Issue #5787: object.__getattribute__(some_type, "__bases__") segfaulted on |
| some builtin types. |
| |
| - Issue #5772: format(1e100, '<') produces '1e+100', not '1.0e+100'. |
| |
| - Issue #5515: str.format() type 'n' combined with commas and leading |
| zeros no longer gives odd results with ints and floats. |
| |
| - Implement PEP 378, Format Specifier for Thousands Separator, for |
| floats. |
| |
| - The str function switches to exponential notation at |
| 1e11, not 1e12. This avoids printing 13 significant digits in |
| situations where only 12 of them are correct. Example problem |
| value: str(1e11 + 0.5). (This minor issue has existed in 2.x for a |
| long time.) |
| |
| - Issue #1580: On most platforms, use a 'short' float repr: for a |
| finite float x, repr(x) now outputs a string based on the shortest |
| sequence of decimal digits that rounds to x. Previous behaviour was |
| to output 17 significant digits and then strip trailing zeros. |
| Another minor difference is that the new repr switches to |
| exponential notation at 1e16 instead of the previous 1e17; this |
| avoids misleading output in some cases. |
| |
| There's a new sys attribute sys.float_repr_style, which takes |
| the value 'short' to indicate that we're using short float repr, |
| and 'legacy' if the short float repr isn't available for one |
| reason or another. |
| |
| The float repr change involves incorporating David Gay's 'perfect |
| rounding' code into the Python core (it's in Python/dtoa.c). As a |
| secondary consequence, all string-to-float and float-to-string |
| conversions (including all float formatting operations) will be |
| correctly rounded on these platforms. |
| |
| See issue 1580 discussions for details of platforms for which |
| this change does not apply. |
| |
| - Issue #5759: float() didn't call __float__ on str subclasses. |
| |
| - The string.maketrans() function is deprecated; there is a new static method |
| maketrans() on the bytes and bytearray classes. This removes confusion about |
| the types string.maketrans() is supposed to work with, and mirrors the |
| methods available on the str class. |
| |
| - Issue #2170: refactored xml.dom.minidom.normalize, increasing both |
| its clarity and its speed. |
| |
| - Issue #1113244: Py_XINCREF, Py_DECREF, Py_XDECREF: Add `do { ... } while (0)' |
| to avoid compiler warnings. |
| |
| Installation |
| ------------ |
| |
| - Issue #5756: Install idle and pydoc with a 3 suffix. |
| |
| Library |
| ------- |
| |
| - Issue #5940: distutils.command.build_clib.check_library_list was not doing |
| the right type checkings anymore. |
| |
| - Issue #4875: On win32, ctypes.util.find_library does no longer |
| return directories. |
| |
| - Issue #5142: Add the ability to skip modules while stepping to pdb. |
| |
| - Issue #1309567: Fix linecache behavior of stripping subdirectories when |
| looking for files given by a relative filename. |
| |
| - Issue #5923: Update the ``turtle`` module to version 1.1, add two new |
| turtle demos in Demo/turtle. |
| |
| - Issue #5692: In :class:`zipfile.Zipfile`, fix wrong path calculation when |
| extracting a file to the root directory. |
| |
| - Issue #5913: os.listdir() should fail for empty path on windows. |
| |
| - Issue #5084: unpickling now interns the attribute names of pickled objects, |
| saving memory and avoiding growth in size of subsequent pickles. Proposal |
| and original patch by Jake McGuire. |
| |
| - The json module now works exclusively with str and not bytes. |
| |
| - Issue #3959: The ipaddr module has been added to the standard library. |
| Contributed by Google. |
| |
| - Issue #3002: ``shutil.copyfile()`` and ``shutil.copytree()`` now raise an |
| error when a named pipe is encountered, rather than blocking infinitely. |
| |
| - Issue #5857: tokenize.tokenize() now returns named tuples. |
| |
| - Issue #4305: ctypes should now build again on mipsel-linux-gnu |
| |
| - Issue #1734234: Massively speedup ``unicodedata.normalize()`` when the |
| string is already in normalized form, by performing a quick check beforehand. |
| Original patch by Rauli Ruohonen. |
| |
| - Issue #5853: calling a function of the mimetypes module from several threads |
| at once could hit the recursion limit if the mimetypes database hadn't been |
| initialized before. |
| |
| - Issue #5854: Updated __all__ to include some missing names and remove some |
| names which should not be exported. |
| |
| - Issue #3102: All global symbols that the _ctypes extension defines |
| are now prefixed with 'Py' or '_ctypes'. |
| |
| - Issue #5041: ctypes does now allow pickling wide character. |
| |
| - Issue #5812: For the two-argument form of the Fraction constructor, |
| Fraction(m, n), m and n are permitted to be arbitrary Rational |
| instances. |
| |
| - Issue #5812: Fraction('1e6') is valid: more generally, any string |
| that's valid for float() is now valid for Fraction(), with the |
| exception of strings representing NaNs and infinities. |
| |
| - Issue #5734: BufferedRWPair was poorly tested and had several glaring |
| bugs. Patch by Brian Quinlan. |
| |
| - Issue #1161031: fix readwrite select flag handling: POLLPRI now |
| results in a handle_expt_event call, not handle_read_event, and POLLERR |
| and POLLNVAL now call handle_close, not handle_expt_event. Also, |
| dispatcher now has an 'ignore_log_types' attribute for suppressing |
| log messages, which is set to 'warning' by default. |
| |
| - Issue #2703: SimpleXMLRPCDispatcher.__init__: Provide default values for |
| new arguments introduced in 2.5. |
| |
| - Issue #5828 (Invalid behavior of unicode.lower): Fixed bogus logic in |
| makeunicodedata.py and regenerated the Unicode database (This fixes |
| u'\u1d79'.lower() == '\x00'). |
| |
| Extension Modules |
| ----------------- |
| |
| - Issue #5881: Remove old undocumented compatibility interfaces in hashlib and |
| pwd. |
| |
| - Issue #5463: In struct module, remove deprecated float coercion |
| for integer type codes: struct.pack('L', 0.3) should now raise |
| an error. The _PY_STRUCT_FLOAT_COERCE constant has been removed. |
| The version number has been bumped to 0.3. |
| |
| - Issue #5359: Readd the Berkley-DB detection code to allow _dbm be built |
| using Berkley-DB. |
| |
| Tests |
| ----- |
| |
| - Issue #5354: New test support function import_fresh_module() makes |
| it easy to import both normal and optimised versions of modules. |
| test_heapq and test_warnings have been adjusted to use it, tests for |
| other modules with both C and Python implementations in the stdlib |
| can be adjusted to use it over time. |
| |
| - Issue #5837: Certain sequences of calls to set() and unset() for |
| support.EnvironmentVarGuard objects restored the environment variables |
| incorrectly on __exit__. |
| |
| C-API |
| ----- |
| |
| - Issue #5630: A replacement PyCObject API, PyCapsule, has been added. |
| |
| |
| What's New in Python 3.1 alpha 2? |
| ================================= |
| |
| *Release date: 2009-4-4* |
| |
| Core and Builtins |
| ----------------- |
| |
| - Implement PEP 378, Format Specifier for Thousands Separator, for |
| integers. |
| |
| - Issue #5666: Py_BuildValue's 'c' code should create byte strings. |
| |
| - Issue #5499: The 'c' code for argument parsing functions now only accepts a |
| byte, and the 'C' code only accepts a unicode character. |
| |
| - Fix a problem in PyErr_NormalizeException that leads to "undetected errors" |
| when hitting the recursion limit under certain circumstances. |
| |
| - Issue #1665206: Remove the last eager import in _warnings.c and make it lazy. |
| |
| - Fix a segfault when running test_exceptions with coverage, caused by |
| insufficient checks in accessors of Exception.__context__. |
| |
| - Issue #5604: non-ASCII characters in module name passed to |
| imp.find_module() were converted to UTF-8 while the path is |
| converted to the default filesystem encoding, causing nonsense. |
| |
| - Issue #5126: str.isprintable() returned False for space characters. |
| |
| - Issue #4865: On MacOSX /Library/Python/2.7/site-packages is added to |
| the end sys.path, for compatibility with the system install of Python. |
| |
| - Issue #4688: Add a heuristic so that tuples and dicts containing only |
| untrackable objects are not tracked by the garbage collector. This can |
| reduce the size of collections and therefore the garbage collection overhead |
| on long-running programs, depending on their particular use of datatypes. |
| |
| - Issue #5512: Rewrite PyLong long division algorithm (x_divrem) to |
| improve its performance. Long divisions and remainder operations |
| are now between 50% and 150% faster. |
| |
| - Issue #4258: Make it possible to use base 2**30 instead of base |
| 2**15 for the internal representation of integers, for performance |
| reasons. Base 2**30 is enabled by default on 64-bit machines. Add |
| --enable-big-digits option to configure, which overrides the |
| default. Add sys.int_info structseq to provide information about |
| the internal format. |
| |
| - Issue #4474: PyUnicode_FromWideChar now converts characters outside |
| the BMP to surrogate pairs, on systems with sizeof(wchar_t) == 4 |
| and sizeof(Py_UNICODE) == 2. |
| |
| - Issue #5237: Allow auto-numbered fields in str.format(). For |
| example: '{} {}'.format(1, 2) == '1 2'. |
| |
| - Issue #5392: when a very low recursion limit was set, the interpreter would |
| abort with a fatal error after the recursion limit was hit twice. |
| |
| - Issue #3845: In PyRun_SimpleFileExFlags avoid invalid memory access with |
| short file names. |
| |
| Library |
| ------- |
| |
| - Issue #2625: added missing items() call to the for loop in |
| mailbox.MH.get_message(). |
| |
| - Issue #5640: Fix _multibytecodec so that CJK codecs don't repeat |
| error substitutions from non-strict codec error callbacks in |
| incrementalencoder and StreamWriter. |
| |
| - Issue #5656: Fix the coverage reporting when running the test suite with |
| the -T argument. |
| |
| - Issue #5647: MutableSet.__iand__() no longer mutates self during iteration. |
| |
| - Issue #5624: Fix the _winreg module name still used in several modules. |
| |
| - Issue #5628: Fix io.TextIOWrapper.read() with a unreadable buffer. |
| |
| - Issue #5619: Multiprocessing children disobey the debug flag and causes |
| popups on windows buildbots. Patch applied to work around this issue. |
| |
| - Issue #5400: Added patch for multiprocessing on netbsd compilation/support |
| |
| - Issue #5387: Fixed mmap.move crash by integer overflow. |
| |
| - Issue #5261: Patch multiprocessing's semaphore.c to support context |
| manager use: "with multiprocessing.Lock()" works now. |
| |
| - Issue #5236: Change time.strptime() to only take strings. Didn't work with |
| bytes already but the failure was non-obvious. |
| |
| - Issue #5177: Multiprocessing's SocketListener class now uses |
| socket.SO_REUSEADDR on all connections so that the user no longer needs |
| to wait 120 seconds for the socket to expire. |
| |
| - Issue #5595: Fix UnboundedLocalError in ntpath.ismount(). |
| |
| - Issue #1174606: Calling read() without arguments of an unbounded file |
| (typically /dev/zero under Unix) could crash the interpreter. |
| |
| - The max_buffer_size arguments of io.BufferedWriter, io.BufferedRWPair, and |
| io.BufferedRandom have been deprecated for removal in Python 3.2. |
| |
| - Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop |
| forever on incomplete input. That caused tarfile.open() to hang when used |
| with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or |
| partial bzip2 compressed data. |
| |
| - Issue #2110: Add support for thousands separator and 'n' type |
| specifier to Decimal.__format__ |
| |
| - Fix Decimal.__format__ bug that swapped the meanings of the '<' and |
| '>' alignment characters. |
| |
| - The error detection code in FileIO.close() could fail to reflect the `errno` |
| value, and report it as -1 instead. |
| |
| - Issue #5016: FileIO.seekable() could return False if the file position |
| was negative when truncated to a C int. Patch by Victor Stinner. |
| |
| Extension Modules |
| ----------------- |
| |
| - Issue #5391: mmap now deals exclusively with bytes. |
| |
| - Issue #5463: In struct module, remove deprecated overflow wrapping |
| when packing an integer: struct.pack('=L', -1) now raises |
| struct.error instead of returning b'\xff\xff\xff\xff'. The |
| _PY_STRUCT_RANGE_CHECKING and _PY_STRUCT_OVERFLOW_MASKING constants |
| have been removed from the struct module. |
| |
| |
| What's New in Python 3.1 alpha 1 |
| ================================ |
| |
| *Release date: 2009-03-07* |
| |
| Core and Builtins |
| ----------------- |
| |
| - The io module has been reimplemented in C for speed. |
| |
| - Give dict views an informative __repr__. |
| |
| - Issue #5247: Improve error message when unknown format codes are |
| used when using str.format() with str, int, and float arguments. |
| |
| - Issue #5249: time.strftime returned malformed string when format string |
| contained non ascii character on windows. |
| |
| - Issue #4626: compile(), exec(), and eval() ignore the coding cookie if the |
| source has already been decoded into str. |
| |
| - Issue #5186: Reduce hash collisions for objects with no __hash__ method by |
| rotating the object pointer by 4 bits to the right. |
| |
| - Issue #4575: Fix Py_IS_INFINITY macro to work correctly on x87 FPUs: |
| it now forces its argument to double before testing for infinity. |
| |
| - Issue #5137: Make len() correctly raise a TypeError when a __len__ method |
| returns a non-number type. |
| |
| - Issue #5182: Removed memoryview.__str__. |
| |
| - Issue #1717: Removed builtin cmp() function, dropped tp_compare |
| slot, the C API functions PyObject_Compare and PyUnicode_Compare and |
| the type definition cmpfunc. The tp_compare slot has been renamed |
| to tp_reserved, and is reserved for future usage. |
| |
| - Issue #1242657: the __len__() and __length_hint__() calls in several tools |
| were suppressing all exceptions. These include list() and bytearray(). |
| |
| - Issue #4707: round(x, n) now returns an integer if x is an integer. |
| Previously it returned a float. |
| |
| - Issue #4753: By enabling a configure option named '--with-computed-gotos' |
| on compilers that support it (notably: gcc, SunPro, icc), the bytecode |
| evaluation loop is compiled with a new dispatch mechanism which gives |
| speedups of up to 20%, depending on the system, on various benchmarks. |
| |
| - Issue #4874: Most builtin decoders now reject unicode input. |
| |
| - Issue #4842: Don't allow trailing 'L' when constructing an integer |
| from a string. |
| |
| - Issue #4991: os.fdopen now raises an OSError for invalid file descriptors. |
| |
| - Issue #4838: When a module is deallocated, free the memory backing the |
| optional module state data. |
| |
| - Issue #4910: Rename nb_long slot to nb_reserved, and change its |
| type to (void *). |
| |
| - Issue #4935: The overflow checking code in the expandtabs() method common |
| to str, bytes and bytearray could be optimized away by the compiler, letting |
| the interpreter segfault instead of raising an error. |
| |
| - Issue #3720: Fix a crash when an iterator modifies its class and removes its |
| __next__ method. |
| |
| - Issue #4910: Builtin int() function and PyNumber_Long/PyNumber_Int API |
| function no longer attempt to call the __long__ slot to convert an object |
| to an integer. Only the __int__ and __trunc__ slots are examined. |
| |
| - Issue #4893: Use NT threading on CE. |
| |
| - Issue #4915: Port sysmodule to Windows CE. |
| |
| - Issue #4868: utf-8, utf-16 and latin1 decoding are now 2x to 4x faster. The |
| common cases are optimized thanks to a dedicated fast path and a moderate |
| amount of loop unrolling. |
| |
| - Issue #4074: Change the criteria for doing a full garbage collection (i.e. |
| collecting the oldest generation) so that allocating lots of objects without |
| destroying them does not show quadratic performance. Based on a proposal by |
| Martin von Löwis at |
| http://mail.python.org/pipermail/python-dev/2008-June/080579.html. |
| |
| - Issue #4604: Some objects of the I/O library could still be used after |
| having been closed (for instance, a read() call could return some |
| previously buffered data). Patch by Dmitry Vasiliev. |
| |
| - Issue #4705: Fix the -u ("unbuffered binary stdout and stderr") command-line |
| flag to work properly. Furthermore, when specifying -u, the text stdout |
| and stderr streams have line-by-line buffering enabled (the default being |
| to buffer arbitrary chunks of data). |
| |
| - The internal table, _PyLong_DigitValue, is now an array of unsigned chars |
| instead of ints (reducing its size from 4 to 8 times thereby reducing |
| Python's overall memory). |
| |
| - Issue #1180193: When importing a module from a .pyc (or .pyo) file with |
| an existing .py counterpart, override the co_filename attributes of all |
| code objects if the original filename is obsolete (which can happen if the |
| file has been renamed, moved, or if it is accessed through different paths). |
| Patch by Ziga Seilnacht and Jean-Paul Calderone. |
| |
| - Issue #4580: Fix slicing of memoryviews when the item size is greater than |
| one byte. Also fixes the meaning of len() so that it returns the number of |
| items, rather than the size in bytes. |
| |
| - Issue #4075: Use OutputDebugStringW in Py_FatalError. |
| |
| - Issue #4747: When the terminal does not use utf-8, executing a script with |
| non-ascii characters in its name could fail with a "SyntaxError: None" error. |
| |
| - Issue #4797: IOError.filename was not set when _fileio.FileIO failed to open |
| file with `bytes' filename on Windows. |
| |
| - Issue #3680: Reference cycles created through a dict, set or deque iterator |
| did not get collected. |
| |
| - Issue #4701: PyObject_Hash now implicitly calls PyType_Ready on types |
| where the tp_hash and tp_dict slots are both NULL. |
| |
| - Issue #4759: None is now allowed as the first argument of |
| bytearray.translate(). It was always allowed for bytes.translate(). |
| |
| - Added test case to ensure attempts to read from a file opened for writing |
| fail. |
| |
| - Issue #3106: Speedup some comparisons (str/str and int/int). |
| |
| - Issue #2183: Simplify and optimize bytecode for list, dict and set |
| comprehensions. Original patch for list comprehensions by Neal Norwitz. |
| |
| - Issue #2467: gc.DEBUG_STATS reported invalid elapsed times. Also, always |
| print elapsed times, not only when some objects are uncollectable / |
| unreachable. Original patch by Neil Schemenauer. |
| |
| - Issue #3439: Add a bit_length method to int. |
| |
| - Issue #2173: When getting device encoding, check that return value of |
| nl_langinfo is not the empty string. This was causing silent build |
| failures on OS X. |
| |
| - Issue #4597: Fixed several opcodes that weren't always propagating |
| exceptions. |
| |
| - Issue #4589: Fixed exception handling when the __exit__ function of a |
| context manager returns a value that cannot be converted to a bool. |
| |
| - Issue #4445: Replace "sizeof(PyBytesObject)" with |
| "offsetof(PyBytesObject, ob_sval) + 1" when allocating memory for |
| bytes instances. On a typical machine this saves 3 bytes of memory |
| (on average) per allocation of a bytes instance. |
| |
| - Issue #4533: File read operation was dreadfully slow due to a slowly |
| growing read buffer. Fixed by using the same growth rate algorithm as |
| Python 2.x. |
| |
| - Issue #4509: Various issues surrounding resize of bytearray objects to |
| which there are buffer exports (e.g. memoryview instances). |
| |
| - Issue #4233: Changed semantic of ``_fileio.FileIO``'s ``close()`` |
| method on file objects with closefd=False. The file descriptor is still |
| kept open but the file object behaves like a closed file. The ``FileIO`` |
| object also got a new readonly attribute ``closefd``. |
| |
| - Issue #4569: Interpreter crash when mutating a memoryview with an item size |
| larger than 1. |
| |
| - Issue #4748: Lambda generators no longer return a value. |
| |
| - The re.sub(), re.subn() and re.split() functions now accept a flags parameter. |
| |
| - Issue #5108: Handle %s like %S, %R and %A in PyUnicode_FromFormatV(): Call |
| PyUnicode_DecodeUTF8() once, remember the result and output it in a second |
| step. This avoids problems with counting UTF-8 bytes that ignores the effect |
| of using the replace error handler in PyUnicode_DecodeUTF8(). |
| |
| Library |
| ------- |
| |
| - Issue #2245: aifc now skips chunk types it doesn't recognize, per spec. |
| |
| - Issue #5874: distutils.tests.test_config_cmd is not locale-sensitive |
| anymore. |
| |
| - Issue #5810: Fixed Distutils test_build_scripts so it uses |
| sysconfig.get_config_vars. |
| |
| - Issue #4951: Fixed failure in test_httpservers. |
| |
| - Issue #5795: Fixed test_distutils failure on Debian ppc. |
| |
| - Issue #5607: fixed Distutils test_get_platform for Mac OS X fat binaries. |
| |
| - Issue #5741: don't disallow "%%" (which is an escape for "%") when setting |
| a value in SafeConfigParser. |
| |
| - Issue #5732: added a new command in Distutils: check. |
| |
| - Issue #5731: Distutils bdist_wininst no longer worked on non-Windows |
| platforms. Initial patch by Paul Moore. |
| |
| - Issue #5095: Added bdist_msi to the list of bdist supported formats. |
| Initial fix by Steven Bethard. |
| |
| - Issue #1491431: Fixed distutils.filelist.glob_to_re for edge cases. |
| Initial fix by Wayne Davison. |
| |
| - Issue #5694: removed spurious test output in Distutils (test_clean). |
| |
| - Issue #1326077: fix the formatting of SyntaxErrors by the traceback module. |
| |
| - Issue #1665206 (partially): Move imports in cgitb to the top of the module |
| instead of performing them in functions. Helps prevent import deadlocking in |
| threads. |
| |
| - Issue #2522: locale.format now checks its first argument to ensure it has |
| been passed only one pattern, avoiding mysterious errors where it appeared |
| that it was failing to do localization. |
| |
| - Issue #5583: Added optional Extensions in Distutils. Initial patch by Georg |
| Brandl. |
| |
| - Issue #1222: locale.format() bug when the thousands separator is a space |
| character. |
| |
| - Issue #5472: Fixed distutils.test_util tear down. Original patch by |
| Tim Golden. |
| |
| - collections.deque() objects now have a read-only attribute called maxlen. |
| |
| - Issue #2638: Show a window constructed with tkSimpleDialog.Dialog only after |
| it is has been populated and properly configured in order to prevent |
| window flashing. |
| |
| - Issue #4792: Prevent a segfault in _tkinter by using the |
| guaranteed to be safe interp argument given to the PythonCmd in place of |
| the Tcl interpreter taken from a PythonCmd_ClientData. |
| |
| - Issue #5193: Guarantee that tkinter.Text.search returns a string. |
| |
| - Issue #5394: removed > 2.3 syntax from distutils.msvc9compiler. |
| Original patch by Akira Kitada. |
| |
| - Issue #5334: array.fromfile() failed to insert values when EOFError was raised. |
| |
| - Issue #5385: Fixed mmap crash after resize failure on windows. |
| |
| - Issue #5179: Fixed subprocess handle leak on failure on windows. |
| |
| - PEP 372: Added collections.OrderedDict(). |
| |
| - The _asdict() for method for namedtuples now returns an OrderedDict(). |
| |
| - configparser now defaults to using an ordered dictionary. |
| |
| - Issue #5401: Fixed a performance problem in mimetypes when ``from mimetypes |
| import guess_extension`` was used. |
| |
| - Issue #1733986: Fixed mmap crash in accessing elements of second map object |
| with same tagname but larger size than first map. (Windows) |
| |
| - Issue #5386: mmap.write_byte didn't check map size, so it could cause buffer |
| overrun. |
| |
| - Issue #1533164: Installed but not listed *.pyo was breaking Distutils |
| bdist_rpm command. |
| |
| - Issue #5378: added --quiet option to Distutils bdist_rpm command. |
| |
| - Issue #5052: make Distutils compatible with 2.3 again. |
| |
| - Issue #5316: Fixed buildbot failures introduced by multiple inheritance |
| in Distutils tests. |
| |
| - Issue #5287: Add exception handling around findCaller() call to help out |
| IronPython. |
| |
| - Issue #5282: Fixed mmap resize on 32bit windows and unix. When offset > 0, |
| The file was resized to wrong size. |
| |
| - Issue #5292: Fixed mmap crash on its boundary access m[len(m)]. |
| |
| - Issue #2279: distutils.sdist.add_defaults now add files |
| from the package_data and the data_files metadata. |
| |
| - Issue #5257: refactored all tests in distutils, so they use |
| support.TempdirManager, to avoid writing in the tests directory. |
| |
| - Issue #4524: distutils build_script command failed with --with-suffix=3. |
| Initial patch by Amaury Forgeot d'Arc. |
| |
| - Issue #2461: added tests for distutils.util |
| |
| - Issue #4998: The memory saving effect of __slots__ had been lost on Fractions |
| which inherited from numbers.py which did not have __slots__ defined. The |
| numbers hierarchy now has its own __slots__ declarations. |
| |
| - Issue #4631: Fix urlopen() result when an HTTP response uses chunked |
| encoding. |
| |
| - Issue #5203: Fixed ctypes segfaults when passing a unicode string to a |
| function without argtypes (only occurs if HAVE_USABLE_WCHAR_T is false). |
| |
| - Issue #3386: distutils.sysconfig.get_python_lib prefix argument was ignored |
| under NT and OS2. Patch by Philip Jenvey. |
| |
| - Issue #5128: Make compileall properly inspect bytecode to determine if needs |
| to be recreated. This avoids a timing hole thanks to the old reliance on the |
| ctime of the files involved. |
| |
| - Issue #5122: Synchronize tk load failure check to prevent a potential |
| deadlock. |
| |
| - Issue #1818: collections.namedtuple() now supports a keyword argument |
| 'rename' which lets invalid fieldnames be automatically converted to |
| positional names in the form, _1, _2, ... |
| |
| - Issue #4890: Handle empty text search pattern in Tkinter.Text.search. |
| |
| - Issue #4512 (part 2): Promote ``ZipImporter._get_filename()`` to be a |
| public documented method ``ZipImporter.get_filename()``. |
| |
| - Issue #4195: The ``runpy`` module (and the ``-m`` switch) now support |
| the execution of packages by looking for and executing a ``__main__`` |
| submodule when a package name is supplied. Initial patch by Andi |
| Vajda. |
| |
| - Issue #1731706: Call Tcl_ConditionFinalize for Tcl_Conditions that will |
| not be used again (this requires Tcl/Tk 8.3.1), also fix a memory leak in |
| Tkapp_Call when calling from a thread different than the one that created |
| the Tcl interpreter. Patch by Robert Hancock. |
| |
| - Issue #4285: Change sys.version_info to be a named tuple. Patch by |
| Ross Light. |
| |
| - Issue #1520877: Now distutils.sysconfig reads $AR from the |
| environment/Makefile. Patch by Douglas Greiman. |
| |
| - Issue #1276768: The verbose option was not used in the code of |
| distutils.file_util and distutils.dir_util. |
| |
| - Issue #5132: Fixed trouble building extensions under Solaris with |
| --enabled-shared activated. Initial patch by Dave Peterson. |
| |
| - Issue #1581476: Always use the Tcl global namespace when calling into Tcl. |
| |
| - The shelve module now defaults to pickle protocol 3. |
| |
| - Fix a bug in the trace module where a bytes object from co_lnotab had its |
| items being passed through ord(). |
| |
| - Issue #2047: shutil.move() could believe that its destination path was |
| inside its source path if it began with the same letters (e.g. "src" vs. |
| "src.new"). |
| |
| - Added the ttk module. See issue #2983: Ttk support for Tkinter. |
| |
| - Removed isSequenceType(), isMappingType, and isNumberType() from the |
| operator module; use the abstract base classes instead. Also removed |
| the repeat() function; use mul() instead. |
| |
| - Issue #5021: doctest.testfile() did not create __name__ and |
| collections.namedtuple() relied on __name__ being defined. |
| |
| - Backport importlib from Python 3.1. Only the import_module() function has |
| been backported to help facilitate transitions from 2.7 to 3.1. |
| |
| - Issue #1885: distutils. When running sdist with --formats=tar,gztar |
| the tar file was overriden by the gztar one. |
| |
| - Issue #4863: distutils.mwerkscompiler has been removed. |
| |
| - Added a new itertools functions: combinations_with_replacement() |
| and compress(). |
| |
| - Issue #5032: added a step argument to itertools.count() and |
| allowed non-integer arguments. |
| |
| - Fix and properly document the multiprocessing module's logging |
| support, expose the internal levels and provide proper usage |
| examples. |
| |
| - Issue #1672332: fix unpickling of subnormal floats, which was |
| producing a ValueError on some platforms. |
| |
| - Issue #3881: Help Tcl to load even when started through the |
| unreadable local symlink to "Program Files" on Vista. |
| |
| - Issue #4710: Extract directories properly in the zipfile module; |
| allow adding directories to a zipfile. |
| |
| - Issue #3807: _multiprocessing build fails when configure is passed |
| --without-threads argument. When this occurs, _multiprocessing will |
| be disabled, and not compiled. |
| |
| - Issue #5008: When a file is opened in append mode with the new IO library, |
| do an explicit seek to the end of file (so that e.g. tell() returns the |
| file size rather than 0). This is consistent with the behaviour of the |
| traditional 2.x file object. |
| |
| - Issue #5013: Fixed a bug in FileHandler which occurred when the delay |
| parameter was set. |
| |
| - Issue #4842: Always append a trailing 'L' when pickling longs using |
| pickle protocol 0. When reading, the 'L' is optional. |
| |
| - Add the importlib package. |
| |
| - Issue #4301: Patch the logging module to add processName support, remove |
| _check_logger_class from multiprocessing. |
| |
| - Issue #3325: Remove python2.x try: except: imports for old cPickle from |
| multiprocessing. |
| |
| - Issue #4959: inspect.formatargspec now works for keyword only arguments |
| without defaults. |
| |
| - Issue #3321: _multiprocessing.Connection() doesn't check handle; added checks |
| for *nix machines for negative handles and large int handles. Without this check |
| it is possible to segfault the interpreter. |
| |
| - Issue #4449: AssertionError in mp_benchmarks.py, caused by an underlying issue |
| in sharedctypes.py. |
| |
| - Issue #1225107: inspect.isclass() returned True for instances with a custom |
| __getattr__. |
| |
| - Issue #3826 and #4791: The socket module now closes the underlying socket |
| appropriately when it is being used via socket.makefile() objects |
| rather than delaying the close by waiting for garbage collection to do it. |
| |
| - Issue #1696199: Add collections.Counter() for rapid and convenient |
| counting. |
| |
| - Issue #3860: GzipFile and BZ2File now support the context manager protocol. |
| |
| - Issue #4867: Fixed a crash in ctypes when passing a string to a |
| function without defining argtypes. |
| |
| - Issue #4272: Add an optional argument to the GzipFile constructor to override |
| the timestamp in the gzip stream. The default value remains the current time. |
| The information can be used by e.g. gunzip when decompressing. Patch by |
| Jacques Frechet. |
| |
| - Restore Python 2.3 compatibility for decimal.py. |
| |
| - Issue #3638: Remove functions from _tkinter module level that depend on |
| TkappObject to work with multiple threads. |
| |
| - Issue #4718: Adapt the wsgiref package so that it actually works with |
| Python 3.x, in accordance with the `official amendments of the spec |
| <http://www.wsgi.org/wsgi/Amendments_1.0>`_. |
| |
| - Issue #4796: Added Decimal.from_float() and Context.create_decimal_from_float() |
| to the decimal module. |
| |
| - Fractions.from_float() no longer loses precision for integers too big to |
| cast as floats. |
| |
| - Issue #4812: add missing underscore prefix to some internal-use-only |
| constants in the decimal module. (Dec_0 becomes _Dec_0, etc.) |
| |
| - Issue #4790: The nsmallest() and nlargest() functions in the heapq module |
| did unnecessary work in the common case where no key function was specified. |
| |
| - Issue #4795: inspect.isgeneratorfunction() returns False instead of None when |
| the function is not a generator. |
| |
| - Issue #4702: Throwing a DistutilsPlatformError instead of IOError in case |
| no MSVC compiler is found under Windows. Original patch by Philip Jenvey. |
| |
| - Issue #4646: distutils was choking on empty options arg in the setup |
| function. Original patch by Thomas Heller. |
| |
| - Issue #3767: Convert Tk object to string in tkColorChooser. |
| |
| - Issue #3248: Allow placing ScrolledText in a PanedWindow. |
| |
| - Issue #4444: Allow assertRaises() to be used as a context handler, so that |
| the code under test can be written inline if more practical. |
| |
| - Issue #4739: Add pydoc help topics for symbols, so that e.g. help('@') |
| works as expected in the interactive environment. |
| |
| - Issue #4756: zipfile.is_zipfile() now supports file-like objects. Patch by |
| Gabriel Genellina. |
| |
| - Issue #4574: reading an UTF16-encoded text file crashes if \r on 64-char |
| boundary. |
| |
| - Issue #4223: inspect.getsource() will now correctly display source code |
| for packages loaded via zipimport (or any other conformant PEP 302 |
| loader). Original patch by Alexander Belopolsky. |
| |
| - Issue #4201: pdb can now access and display source code loaded via |
| zipimport (or any other conformant PEP 302 loader). Original patch by |
| Alexander Belopolsky. |
| |
| - Issue #4197: doctests in modules loaded via zipimport (or any other PEP |
| 302 conformant loader) will now work correctly in most cases (they |
| are still subject to the constraints that exist for all code running |
| from inside a module loaded via a PEP 302 loader and attempting to |
| perform IO operations based on __file__). Original patch by |
| Alexander Belopolsky. |
| |
| - Issues #4082 and #4512: Add runpy support to zipimport in a manner that |
| allows backporting to maintenance branches. Original patch by |
| Alexander Belopolsky. |
| |
| - Issue #4163: textwrap module: allow word splitting on a hyphen preceded by |
| a non-ASCII letter. |
| |
| - Issue #4616: TarFile.utime(): Restore directory times on Windows. |
| |
| - Issue #4021: tokenize.detect_encoding() now raises a SyntaxError when the |
| codec cannot be found. This is for compatibility with the builtin behavior. |
| |
| - Issue #4084: Fix max, min, max_mag and min_mag Decimal methods to |
| give correct results in the case where one argument is a quiet NaN |
| and the other is a finite number that requires rounding. |
| |
| - Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat |
| libs. |
| |
| - Added the subprocess.check_call_output() convenience function to get output |
| from a subprocess on success or raise an exception on error. |
| |
| - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to |
| support unusual filenames (such as those containing semi-colons) in |
| Content-Disposition headers. |
| |
| - Issue #4384: Added logging integration with warnings module using |
| captureWarnings(). This change includes a NullHandler which does nothing; |
| it will be of use to library developers who want to avoid the "No handlers |
| could be found for logger XXX" message which can appear if the library user |
| doesn't configure logging. |
| |
| - Issue #3741: DISTUTILS_USE_SDK set causes msvc9compiler.py to raise an |
| exception. |
| |
| - Issue #4529: fix the parser module's validation of try-except-finally |
| statements. |
| |
| - Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument, |
| not a malformed option. |
| |
| - Added the subprocess.check_output() convenience function to get output |
| from a subprocess on success or raise an exception on error. |
| |
| - Issue #4542: On Windows, binascii.crc32 still accepted str as binary input; |
| the corresponding tests now pass. |
| |
| - Issue #4537: webbrowser.UnixBrowser would fail to open the browser because |
| it was calling the wrong open() function. |
| |
| - Issue #1055234: cgi.parse_header(): Fixed parsing of header parameters to |
| support unusual filenames (such as those containing semi-colons) in |
| Content-Disposition headers. |
| |
| - Issue #4861: ctypes.util.find_library(): Robustify. Fix library detection on |
| biarch systems. Try to rely on ldconfig only, without using objdump and gcc. |
| |
| - Issue #5104: The socket module now raises OverflowError when 16-bit port and |
| protocol numbers are supplied outside the allowed 0-65536 range on bind() |
| and getservbyport(). |
| |
| Tools/Demos |
| ----------- |
| |
| - Issue #4704: remove use of cmp() in pybench, bump its version number to 2.1, |
| and make it 2.6-compatible. |
| |
| - Ttk demos added in Demo/tkinter/ttk/ |
| |
| - Issue #4677: add two list comprehension tests to pybench. |
| |
| |
| Build |
| ----- |
| |
| - Issue #5847: Remove -n switch on "Edit with IDLE" menu item. |
| |
| - Issue #5726: Make Modules/ld_so_aix return the actual exit code of the |
| linker, rather than always exit successfully. Patch by Floris Bruynooghe. |
| |
| - Issue #4587: Add configure option --with-dbmliborder=db1:db2:... to specify |
| the order that backends for the dbm extension are checked. |
| |
| - Link the shared python library with $(MODLIBS). |
| |
| - Issue #5134: Silence compiler warnings when compiling sqlite with VC++. |
| |
| - Issue #4494: Fix build with Py_NO_ENABLE_SHARED on Windows. |
| |
| - Issue #4895: Use _strdup on Windows CE. |
| |
| - Issue #4472: "configure --enable-shared" now works on OSX |
| |
| - Issues #4728 and #4060: WORDS_BIGEDIAN is now correct in Universal builds. |
| |
| - Issue #4389: Add icon to the uninstall entry in "add-and-remove-programs". |
| |
| - Issue #4289: Remove Cancel button from AdvancedDlg. |
| |
| - Issue #1656675: Register a drop handler for .py* files on Windows. |
| |
| - Issue #4120: Exclude manifest from extension modules in VS2008. |
| |
| - Issue #4091: Install pythonxy.dll in system32 again. |
| |
| - Issue #4018: Disable "for me" installations on Vista. |
| |
| - Issue #3758: Add ``patchcheck`` build target to .PHONY. |
| |
| - Issue #4204: Fixed module build errors on FreeBSD 4. |
| |
| |
| C-API |
| ----- |
| |
| - Issue #5175: PyLong_AsUnsignedLongLong now raises OverflowError |
| for negative arguments. Previously, it raised TypeError. |
| |
| - Issue #4720: The format for PyArg_ParseTupleAndKeywords can begin with '|'. |
| |
| - Issue #3632: from the gdb debugger, the 'pyo' macro can now be called when |
| the GIL is released, or owned by another thread. |
| |
| - Issue #4122: On Windows, fix a compilation error when using the |
| Py_UNICODE_ISSPACE macro in an extension module. |
| |
| |
| Extension Modules |
| ----------------- |
| |
| - Issue #3745: Fix hashlib to always reject unicode and non buffer-api |
| supporting objects as input no matter how it was compiled (built in |
| implementations or external openssl library). |
| |
| - Issue #4397: Fix occasional test_socket failure on OS X. |
| |
| - Issue #4279: Fix build of parsermodule under Cygwin. |
| |
| - Issue #4751: hashlib now releases the GIL when hashing large buffers |
| (with a hardwired threshold of 2048 bytes), allowing better parallelization |
| on multi-CPU systems. Contributed by Lukas Lueg (ebfe) and Victor Stinner. |
| |
| - Issue #4051: Prevent conflict of UNICODE macros in cPickle. |
| |
| - Issue #4738: Each zlib object now has a separate lock, allowing to compress |
| or decompress several streams at once on multi-CPU systems. Also, the GIL |
| is now released when computing the CRC of a large buffer. Patch by ebfe. |
| |
| - Issue #4228: Pack negative values the same way as 2.4 in struct's L format. |
| |
| - Issue #1040026: Fix os.times result on systems where HZ is incorrect. |
| |
| - Issues #3167, #3682: Fix test_math failures for log, log10 on Solaris, |
| OpenBSD. |
| |
| - Issue #4583: array.array would not always prohibit resizing when a buffer |
| has been exported, resulting in an interpreter crash when accessing the |
| buffer. |
| |
| |
| - Issue #5228: Make functools.partial objects can now be pickled. |
| |
| Tests |
| ----- |
| |
| - regrtest no longer treats ImportError as equivalent to SkipTest. Imports |
| that should cause a test to be skipped are now done using import_module |
| from test support, which does the conversion. |
| |
| - Issue #5083: New 'gui' resource for regrtest. |
| |
| |
| Docs |
| ---- |
| |
| |
| **(For information about older versions, consult the HISTORY file.)** |