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Python News
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What's New in Python 3.3.4 release candidate 1?
===============================================
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*Not yet released, see sections below for changes released in 3.3.3*
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Core and Builtins
-----------------

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- Issue #19081: When a zipimport .zip file in sys.path being imported from
  is modified during the lifetime of the Python process after zipimport has
  already cached the zip's table of contents we detect this and recover
  rather than read bad data from the .zip (causing odd import errors).

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- Issue #17432: Drop UCS2 from names of Unicode functions in python3.def.

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- Issue #19969: PyBytes_FromFormatV() now raises an OverflowError if "%c"
  argument is not in range [0; 255].

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- Issue #14432: Generator now clears the borrowed reference to the thread
  state. 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.

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- Issue #19932: Fix typo in import.h, missing whitespaces in function prototypes.

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- Issue #19729: In str.format(), fix recursive expansion in format spec.

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- Issue #19638: Fix possible crash / undefined behaviour from huge (more than 2
  billion characters) input strings in _Py_dg_strtod.

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Library
-------

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- Issue #20113: os.readv() and os.writev() now raise an OSError exception on
  error instead of returning -1.

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- Issue #20072: Fixed multiple errors in tkinter with wantobjects is False.

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- Issue #20108: Avoid parameter name clash in inspect.getcallargs().

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- Issue #12692: Backport the fix for ResourceWarning in test_urllib2net. This
  also helps in closing the socket when Connection Close header is not sent.

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- Issue #19422: Explicitly disallow non-SOCK_STREAM sockets in the ssl
  module, rather than silently let them emit clear text data.

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- Issue #18116: getpass was always getting an error when testing /dev/tty,
  and thus was always falling back to stdin, and would then raise an exception
  if stdin could not be used (such as /dev/null).  It also leaked an open file.
  All of these issues are now fixed.

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- Issue #20027: Fixed locale aliases for devanagari locales.

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- Issue #20067: Tkinter variables now work when wantobjects is false.

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- Issue #19020: Tkinter now uses splitlist() instead of split() in configure
  methods.

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- Fix TypeError on "setup.py upload --show-response".

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- Issue #12226: HTTPS is now used by default when connecting to PyPI.
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- Issue #20045: Fix "setup.py register --list-classifiers".

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- Issue #18879: When a method is looked up on a temporary file, avoid closing
  the file before the method is possibly called.

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- Issue #20034: Updated alias mapping to most recent locale.alias file
  from X.org distribution using makelocalealias.py.

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- Issue #5815: Fixed support for locales with modifiers.  Fixed support for
  locale encodings with hyphens.

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- Issue #20026: Fix the sqlite module to handle correctly invalid isolation
  level (wrong type).

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- Issue #18829: csv.Dialect() now checks type for delimiter, escapechar and
  quotechar fields.  Original patch by Vajrasky Kok.

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- 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.

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- Issue #20007: HTTPResponse.read(0) no more prematurely closes connection.
  Original patch by Simon Sapin.

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- Issue #19912: Fixed numerous bugs in ntpath.splitunc().

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- Issue #19911: ntpath.splitdrive() now correctly processes the 'İ' character
  (U+0130, LATIN CAPITAL LETTER I WITH DOT ABOVE).

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- Issue #19532: python -m compileall with no filename/directory arguments now
  respects the -f and -q flags instead of ignoring them.

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- Issue #19623: Fixed writing to unseekable files in the aifc module.

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- Issue #17919: select.poll.register() again works with poll.POLLNVAL on AIX.
  Fixed integer overflow in the eventmask parameter.
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- 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.

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- Issue #17200: telnetlib's read_until and expect timeout was broken by the
  fix to Issue #14635 in Python 3.3.0 to be interpreted as milliseconds
  instead of seconds when the platform supports select.poll (ie: everywhere).
  It is now treated as seconds once again.

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- 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.

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- 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.

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- Issue #19506: Use a memoryview to avoid a data copy when piping data
  to stdin within subprocess.Popen.communicate.  5-10% less cpu usage.

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- Issue #19839: Fix regression in bz2 module's handling of non-bzip2 data at
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  EOF, and analogous bug in lzma module.
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- 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).

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- Issue #19834: Support unpickling of exceptions pickled by Python 2.

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- Issue #15798: Fixed subprocess.Popen() to no longer fail if file
  descriptor 0, 1 or 2 is closed.

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- Issue #19088: Fixed incorrect caching of the copyreg module in
  object.__reduce__() and object.__reduce_ex__().

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- Fixed _pickle.Unpickler to not fail when loading empty strings as
  persistent IDs.

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- Issue #11480: Fixed copy.copy to work with classes with custom metaclasses.
  Patch by Daniel Urban.

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- Issue #6477: Added support for pickling the types of built-in singletons
  (i.e., Ellipsis, NotImplemented, None).

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- Issue #11508: Fixed uuid.getnode() and uuid.uuid1() on environment with
  virtual interface.  Original patch by Kent Frazier.

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- Issue #11489: JSON decoder now accepts lone surrogates.

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- Issue #19545: Avoid chained exceptions while passing stray % to
  time.strptime().  Initial patch by Claudiu Popa.

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- Issue #19633: Fixed writing not compressed 16- and 32-bit wave files on
  big-endian platforms.

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- Issue #19449: in csv's writerow, handle non-string keys when generating the
  error message that certain keys are not in the 'fieldnames' list.

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- 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.

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- Fix compilation error under gcc of the ctypes module bundled libffi for arm.

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- Issue #19523: Closed FileHandler leak which occurred when delay was set.

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- Issue #13674: Prevented time.strftime from crashing on Windows when given
  a year before 1900 and a format of %y.

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- 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.

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- Issue #19544 and Issue #7457: Restore the read_pkg_file method to
  distutils.dist.DistributionMetadata accidentally removed in the undo of
  distutils2.

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- Issue #1575020: Fixed support of 24-bit wave files on big-endian platforms.

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- Issue #19480: HTMLParser now accepts all valid start-tag names as defined
  by the HTML5 standard.

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- Issue #6157: Fixed tkinter.Text.debug().  Original patch by Guilherme Polo.

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- Issue #6160: The bbox() method of tkinter.Spinbox now returns a tuple of
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  integers instead of a string.  Based on patch by Guilherme Polo.
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- Issue #10197: Rework subprocess.get[status]output to use subprocess
  functionality and thus to work on Windows. Patch by Nick Coghlan.
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- Issue #19286: Directories in ``package_data`` are no longer added to
  the filelist, preventing failure outlined in the ticket.

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IDLE
----

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- Issue #20058: sys.stdin.readline() in IDLE now always returns only one line.

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- Issue #19481: print() of string subclass instance in IDLE no longer hangs.

- Issue #18270: Prevent possible IDLE AttributeError on OS X when no initial
  shell window is present.
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Tests
-----

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- Issue #20055: Fix test_shutil under Windows with symlink privileges held.
  Patch by Vajrasky Kok.

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- Issue #19938: Re-enabled test_bug_1333982 in test_dis, which had been
  disabled since 3.0 due to the changes in listcomp handling.

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- Issue #19320: test_tcl no longer fails when wantobjects is false.

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- Issue #19683: Removed empty tests from test_minidom.  Patch by Ajitesh Gupta.

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- Issue #19919: Fix flacky SSL test. connect_ex() sometimes returns
  EWOULDBLOCK on Windows or VMs hosted on Windows.

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- Issue #19912: Added tests for ntpath.splitunc().

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- Issue #19828: Fixed test_site when the whole suite is run with -S.

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- Issue #19928: Implemented a test for repr() of cell objects.

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- Issue #19535: Fixed test_docxmlrpc when python is run with -OO.

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- Issue #19926: Removed unneeded test_main from test_abstract_numbers.
  Patch by Vajrasky Kok.

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- Issue #19595, #19987: Re-enabled a long-disabled test in test_winsound.
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- Issue #19588: Fixed tests in test_random that were silently skipped most
  of the time.  Patch by Julian Gindi.

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- Issue #19596: Set untestable tests in test_importlib to None to avoid
  reporting success on empty tests.

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- 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 within a unittest TestCase.

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- Issue #18702, 19572: All skipped tests now reported as skipped.
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- Issue #19085: Added basic tests for all tkinter widget options.

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Documentation
-------------

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- Issue #19963: Document that importlib.import_module() no longer requires
  importing parent packages separately.

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- Issue #18840: Introduce the json module in the tutorial, and deemphasize
  the pickle module.

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- Issue #19845: Updated the Compiling Python on Windows section.

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- Issue #19795: Improved markup of True/False constants.

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- 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.

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Build
-----

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- 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.

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- Add workaround for VS 2010 nmake clean issue. VS 2010 doesn't set up PATH
  for nmake.exe correctly.

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What's New in Python 3.3.3?
===========================

*Release date: 17-Nov-2013*

No changes from release candidate 2.


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What's New in Python 3.3.3 release candidate 2?
===============================================
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*Release date: 11-Nov-2013*
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Library
-------

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- Issue #19227: Any re-seeding of the OpenSSL RNG on fork has been removed;
  this should be handled by OpenSSL itself or by the application.

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- Issue #19435: Fix directory traversal attack on CGIHttpRequestHandler.

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Tests
-----

- Issue #18964: Fix test_tcl when run with Tcl/Tk versions  < 8.5.

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Build
-----

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- Issue #15663: Revert OS X installer built-in Tcl/Tk support for 3.3.3.
  Some third-party projects, such as Matplotlib and PIL/Pillow,
  depended on being able to build with Tcl and Tk frameworks in
  /Library/Frameworks.

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What's New in Python 3.3.3 release candidate 1?
===============================================

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*Release date: 27-Oct-2013*
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Core and Builtins
-----------------

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- Issue #18603: Ensure that PyOS_mystricmp and PyOS_mystrnicmp are in the
  Python executable and not removed by the linker's optimizer.

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- Issue #19279: UTF-7 decoder no more produces illegal strings.

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- Fix macro expansion of _PyErr_OCCURRED(), and make sure to use it in at
  least one place so as to avoid regressions.

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- Issue #19014: memoryview.cast() is now allowed on zero-length views.

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- Issue #19098: Prevent overflow in the compiler when the recursion limit is set
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  absurdly high.
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- Issue #18942: sys._debugmallocstats() output was damaged on Windows.

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- Issue #18667: Add missing "HAVE_FCHOWNAT" symbol to posix._have_functions.

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- Issue #18368: PyOS_StdioReadline() no longer leaks memory when realloc()
  fails.

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- Issue #16741: Fix an error reporting in int().

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- Issue #17899: Fix rare file descriptor leak in os.listdir().

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- Issue #18552: Check return value of PyArena_AddPyObject() in
  obj2ast_object().

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- Issue #18560: Fix potential NULL pointer dereference in sum().

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- Issue #15905: Fix theoretical buffer overflow in handling of sys.argv[0],
  prefix and exec_prefix if the operation system does not obey MAXPATHLEN.

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- Issue #18344: Fix potential ref-leaks in _bufferedreader_read_all().

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- Issue #17872: Fix a segfault in marshal.load() when input stream returns
  more bytes than requested.

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- Issue #18426: Fix NULL pointer dereference in C extension import when
  PyModule_GetDef() returns an error.

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- Issue #18328: Reorder ops in PyThreadState_Delete*() functions. Now the
  tstate is first removed from TLS and then deallocated.

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- Issue #18184: PyUnicode_FromFormat() and PyUnicode_FromFormatV() now raise
  OverflowError when an argument of %c format is out of range.

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- Issue #18137: Detect integer overflow on precision in float.__format__()
  and complex.__format__().

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- Issue #18183: Fix various unicode operations on strings with large unicode
  codepoints.

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- Issue #18180: Fix ref leak in _PyImport_GetDynLoadWindows().

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- Issue #18038: SyntaxError raised during compilation sources with illegal
  encoding now always contains an encoding name.

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- Issue #17644: Fix a crash in str.format when curly braces are used in square
  brackets.

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- Issue #17983: Raise a SyntaxError for a ``global __class__`` statement in a
  class body.

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- Issue #17927: Frame objects kept arguments alive if they had been copied into
  a cell, even if the cell was cleared.

Library
-------

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- Issue #19395: Raise an exception when attempting to pickle a bz2 or lzma
  compressor/decompressor object, rather than creating a pickle that would
  cause a segfault when loaded and used.

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- Issue #19227: Try to fix deadlocks caused by re-seeding then OpenSSL
  pseudo-random number generator on fork().

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- Issue #16037: HTTPMessage.readheaders() raises an HTTPException when more than
  100 headers are read.  Adapted from patch by Jyrki Pulliainen.

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- 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.

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- 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.

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- 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.

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- Issue #16039: CVE-2013-1752: Change use of readline in imaplib module to limit
  line length.  Patch by Emil Lind.

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- Issue #19393: Fix symtable.symtable function to not be confused when there are
  functions or classes named "top".

422 423 424
- Issue #19339: telnetlib module is now using time.monotonic() when available
  to compute timeout.

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- Issue #19288: Fixed the "in" operator of dbm.gnu databases for string
  argument.  Original patch by Arfrever Frehtes Taifersar Arahesis.

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- Issue #19287: Fixed the "in" operator of dbm.ndbm databases for string
  argument.  Original patch by Arfrever Frehtes Taifersar Arahesis.

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- Issue #19327: Fixed the working of regular expressions with too big charset.

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- Issue #19350: Increasing the test coverage of macurl2path. Patch by Colin
  Williams.

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- Issue #19352: Fix unittest discovery when a module can be reached
  through several paths (e.g. under Debian/Ubuntu with virtualenv).

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- Issue #15207: Fix mimetypes to read from correct part of Windows registry
  Original patch by Dave Chambers

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- Issue #8964: fix platform._sys_version to handle IronPython 2.6+.
  Patch by Martin Matusiak.

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- 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.

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- Issue #18235: Fix the sysconfig variables LDSHARED and BLDSHARED under AIX.
  Patch by David Edelsohn.

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- Issue #19276: Fixed the wave module on 64-bit big-endian platforms.

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- Issue #18776: atexit callbacks now display their full traceback when they
  raise an exception.

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- Issue #17827: Add the missing documentation for ``codecs.encode`` and
  ``codecs.decode``.

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- Issue #18458: Prevent crashes with newer versions of libedit.  Its readline
  emulation has changed from 0-based indexing to 1-based like gnu readline.
  Original patch by Ronald Oussoren.

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- Issue #18919: If the close() method of a writer in the sunau or wave module
  failed, second invocation of close() and destructor no more raise an
  exception.

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- Issue #19131: The aifc module now correctly reads and writes sampwidth of
  compressed streams.

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- Issue #19158:  a rare race in BoundedSemaphore could allow .release() too
  often.
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- Issue #18037: 2to3 now escapes '\u' and '\U' in native strings.

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- Issue #19137: The pprint module now correctly formats instances of set and
  frozenset subclasses.

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- Issue #19092: contextlib.ExitStack now correctly reraises exceptions
  from the __exit__ callbacks of inner context managers (Patch by Hrvoje
  Nikšić)

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- Issue #12641: Avoid passing "-mno-cygwin" to the mingw32 compiler, except
  when necessary.  Patch by Oscar Benjamin.

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- Issue #18594: The fast path for collections.Counter() was never taken
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  due to an over-restrictive type check.  And the fallback path did
  not implement the same algorithm as the pure python code.
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- Properly initialize all fields of a SSL object after allocation.

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- Issue #4366: Fix building extensions on all platforms when --enable-shared
  is used.

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- 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.

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- Issue #19053: ZipExtFile.read1() with non-zero argument no more returns empty
  bytes until end of data.

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- Issue #19028: Fixed tkinter.Tkapp.merge() for non-string arguments.

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- Issue #3015: Fixed tkinter with wantobject=False.  Any Tcl command call
  returned empty string.

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- Issue #18050: Fixed an incompatibility of the re module with Python 3.3.0
  binaries.

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- Issue #19037: The mailbox module now makes all changes to maildir files
  before moving them into place, to avoid race conditions with other programs
  that may be accessing the maildir directory.

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- Issue #14984: On POSIX systems, when netrc is called without a filename
  argument (and therefore is reading the user's $HOME/.netrc file), it now
  enforces the same security rules as typical ftp clients: the .netrc file must
  be owned by the user that owns the process and must not be readable by any
  other user.
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- Issue #18873: The tokenize module now detects Python source code encoding
  only in comment lines.
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- Issue #17324: Fix http.server's request handling case on trailing '/'. Patch
  contributed by Vajrasky Kok.

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- Issue #19018: The heapq.merge() function no longer suppresses IndexError
  in the underlying iterables.

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- Issue #18784: The uuid module no more attempts to load libc via ctypes.CDLL,
  if all necessary functions are already found in libuuid.
  Patch by Evgeny Sologubov.

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- Issue #18672: Fixed format specifiers for Py_ssize_t in debugging output in
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  the _sre module.
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- Issue #18830: inspect.getclasstree() no more produces duplicated entries even
  when input list contains duplicates.

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- Issue #18909: Fix _tkinter.tkapp.interpaddr() on Windows 64-bit, don't cast
  64-bit pointer to long (32 bits).

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- Issue #18876: The FileIO.mode attribute now better reflects the actual mode
  under which the file was opened.  Patch by Erik Bray.

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- Issue #18418: After fork(), reinit all threads states, not only active ones.
  Patch by A. Jesse Jiryu Davis.

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- Issue #16611: http.cookie now correctly parses the 'secure' and 'httponly'
  cookie flags.

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- Issue #11973: Fix a problem in kevent. The flags and fflags fields are now
  properly handled as unsigned.

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- Issue #17702: On error, os.environb now removes suppress the except context
  when raising a new KeyError with the original key.

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- Issue #18755: Fixed the loader used in imp to allow get_data() to be called
  multiple times.

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- Issue #16809: Fixed some tkinter incompabilities with Tcl/Tk 8.6.

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- Issue #16809: Tkinter's splitlist() and split() methods now accept Tcl_Obj
  argument.

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- Issue #18324: set_payload now correctly handles binary input.  This also
  supersedes the previous fixes for #14360, #1717, and #16564.

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- Issue #17119: Fixed integer overflows when processing large strings and tuples
  in the tkinter module.

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- Issue #18747: Re-seed OpenSSL's pseudo-random number generator after fork.
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  A pthread_atfork() parent handler is used to seed the PRNG with pid, time
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  and some stack data.

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- Issue #8865: Concurrent invocation of select.poll.poll() now raises a
  RuntimeError exception.  Patch by Christian Schubert.

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- Issue #13461: Fix a crash in the TextIOWrapper.tell method on 64-bit
  platforms.  Patch by Yogesh Chaudhari.

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- Issue #18777: The ssl module now uses the new CRYPTO_THREADID API of
  OpenSSL 1.0.0+ instead of the deprecated CRYPTO id callback function.

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- Issue #18768: Correct doc string of RAND_edg(). Patch by Vajrasky Kok.
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- Issue #18178: Fix ctypes on BSD. dlmalloc.c was compiled twice which broke
  malloc weak symbols.

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- Issue #18709: Fix CVE-2013-4238. The SSL module now handles NULL bytes
  inside subjectAltName correctly. Formerly the module has used OpenSSL's
  GENERAL_NAME_print() function to get the string represention of ASN.1
  strings for ``rfc822Name`` (email), ``dNSName`` (DNS) and
  ``uniformResourceIdentifier`` (URI).

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- Issue #18756: Improve error reporting in os.urandom() when the failure
  is due to something else than /dev/urandom not existing (for example,
  exhausting the file descriptor limit).

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- Issue #18405: Improve the entropy of crypt.mksalt().

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- Issue #19151: Fix docstring and use of _get_supported_file_loaders() to
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  reflect 2-tuples.

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- Issue #18676: Change 'positive' to 'non-negative' in queue.py put and get
  docstrings and ValueError messages. Patch by Zhongyue Luo

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- Issue #18681: Fix a NameError in imp.reload() (noticed by Weizhao Li).

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- Issue #8112: xlmrpc.server's DocXMLRPCServer server no longer raises an error
  if methods have annotations; it now correctly displays the annotations.

615 616
- Issue #17998: Fix an internal error in regular expression engine.

617 618 619
- Issue #17557: Fix os.getgroups() to work with the modified behavior of
  getgroups(2) on OS X 10.8.  Original patch by Mateusz Lenik.

620 621 622
- Issue #18599: Fix name attribute of _sha1.sha1() object. It now returns
  'SHA1' instead of 'SHA'.

623 624
- Issue #18561: Skip name in ctypes' _build_callargs() if name is NULL.

625 626
- Issue #18559: Fix NULL pointer dereference error in _pickle module

627 628 629
- Issue #18556: Check the return value of a PyUnicode_AsWideChar() call in
  ctypes' U_set().

630 631
- Issue #18549: Eliminate dead code in socket_ntohl()

632 633
- Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj()

634 635 636
- Issue #18513: Fix behaviour of cmath.rect w.r.t. signed zeros on OS X 10.8 +
  gcc.

637 638
- Issue #18480: Add missing call to PyType_Ready to the _elementtree extension.

639 640 641
- Issue #17778: Fix test discovery for test_multiprocessing. (Patch by
  Zachary Ware.)

642 643 644
- Issue #18431: The new email header parser now decodes RFC2047 encoded words
  in structured headers.

645 646 647
- Issue #18432: The sched module's queue method was incorrectly returning
  an iterator instead of a list.

648 649 650 651
- Issue #18044: The new email header parser was mis-parsing encoded words where
  an encoded character immediately followed the '?' that follows the CTE
  character, resulting in a decoding failure.  They are now decoded correctly.

652 653 654
- Issue #18101: Tcl.split() now process strings nested in a tuple as it
  do with byte strings.

655 656 657
- Issue #17198: Fix a NameError in the dbm module.  Patch by Valentina
  Mukhamedzhanova.

658 659
- Issue #18013: Fix cgi.FieldStorage to parse the W3C sample form.

660 661 662
- Issue #18347: ElementTree's html serializer now preserves the case of
  closing tags.

663 664
- Issue #17261: Ensure multiprocessing's proxies use proper address.

665 666 667 668
- Issue #18343: faulthandler.register() now keeps the previous signal handler
  when the function is called twice, so faulthandler.unregister() restores
  correctly the original signal handler.

669 670
- Issue #17097: Make multiprocessing ignore EINTR.

671 672 673
- Issue #18339: Negative ints keys in unpickler.memo dict no longer cause a
  segfault inside the _pickle C extension.

674 675 676
- Issue #18224: Removed pydoc script from created venv, as it causes problems
  on Windows and adds no value over and above python -m pydoc ...

677 678 679 680
- Issue #18155: The csv module now correctly handles csv files that use
  a delimter character that has a special meaning in regexes, instead of
  throwing an exception.

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681 682 683
- Issue #14360: encode_quopri can now be successfully used as an encoder
  when constructing a MIMEApplication object.

684 685 686 687
- Issue #18135: ssl.SSLSocket.write() now raises an OverflowError if the input
  string in longer than 2 gigabytes, and ssl.SSLContext.load_cert_chain()
  raises a ValueError if the password is longer than 2 gigabytes. The ssl
  module does not support partial write.
688

689 690
- Issue #18248: Fix libffi build on AIX.

691 692
- Issue #18259: Declare sethostname in socketmodule.c for AIX

693
- Issue #18167: cgi.FieldStorage no longer fails to handle multipart/form-data
694 695
  when \r\n appears at end of 65535 bytes without other newlines.

696 697 698 699
- subprocess: Prevent a possible double close of parent pipe fds when the
  subprocess exec runs into an error.  Prevent a regular multi-close of the
  /dev/null fd when any of stdin, stdout and stderr was set to DEVNULL.

700 701
- Issue #16102: Make uuid._netbios_getnode() work again on Python 3.

702 703 704 705
- Issue #18109: os.uname() now decodes fields from the locale encoding, and
  socket.gethostname() now decodes the hostname from the locale encoding,
  instead of using the UTF-8 encoding in strict mode.

706 707 708 709
- Issue #17403: urllib.parse.robotparser normalizes the urls before adding to
  ruleline. This helps in handling certain types invalid urls in a conservative
  manner.

710 711 712
- Issue #18025: Fixed a segfault in io.BufferedIOBase.readinto() when raw
  stream's read() returns more bytes than requested.

713 714 715
- Issue #18011: As was originally intended, base64.b32decode() now raises a
  binascii.Error if there are non-b32-alphabet characters present in the input
  string, instead of a TypeError.
716

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- Issue #13772: Restored directory detection of targets in ``os.symlink`` on
  Windows, which was temporarily removed in Python 3.2.3 due to an incomplete
  implementation. The implementation now works even if the symlink is created
  in a location other than the current directory.

722 723 724
- Issue #16986: ElementTree now correctly parses a string input not only when
  an internal XML encoding is UTF-8 or US-ASCII.

725 726
- Issue #17812: Fixed quadratic complexity of base64.b32encode().

727 728 729
- Issue #17980: Fix possible abuse of ssl.match_hostname() for denial of
  service using certificates with many wildcards (CVE-2013-2099).

730 731
- Issue #17981: Closed socket on error in SysLogHandler.

732 733 734 735
- Fix typos in the multiprocessing module.

- Issue #17754: Make ctypes.util.find_library() independent of the locale.

736 737
- Issue #17968: Fix memory leak in os.listxattr().

738 739 740
- Issue #17269: Workaround for socket.getaddrinfo crash on MacOS X
  with port None or "0" and flags AI_NUMERICSERV.

741 742
- Issue #18698: Ensure imp.reload() returns the module out of sys.modules.

743 744 745 746 747
- Issue #18080: When building a C extension module on OS X, if the compiler
  is overriden with the CC environment variable, use the new compiler as
  the default for linking if LDSHARED is not also overriden.  This restores
  Distutils behavior introduced in 3.2.3 and inadvertently dropped in 3.3.0.

748 749 750
- Issue #18113: Fixed a refcount leak in the curses.panel module's
  set_userptr() method.  Reported by Atsuo Ishimoto.

751 752 753 754
- Issue #18849: Fixed a Windows-specific tempfile bug where collision with an
  existing directory caused mkstemp and related APIs to fail instead of
  retrying. Report and fix by Vlad Shcherbina.

755 756 757 758
- Issue #19400: Prevent extension module build failures with Xcode 5 on OS X
  10.8+ when using a universal Python that included a PPC architecture,
  such as with a python.org 32-bit-only binary installer.

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C API
-----

- Issue #18351: Fix various issues with a helper function in importlib used
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  by PyImport_ExecCodeModuleWithPathnames() (and thus by extension
  PyImport_ExecCodeModule() and PyImport_ExecCodeModuleEx()).
765

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IDLE
----

769 770 771
- Issue #18873: IDLE now detects Python source code encoding only in comment
  lines.

772 773
- Issue #18988: The "Tab" key now works when a word is already autocompleted.

774 775
- Issue #18489: Add tests for SearchEngine. Original patch by Phil Webster.

776 777 778 779
- Issue #18429: Format / Format Paragraph, now works when comment blocks
  are selected. As with text blocks, this works best when the selection
  only includes complete lines.

780 781 782
- Issue #18226: Add docstrings and unittests for FormatParagraph.py.
  Original patches by Todd Rovito and Phil Webster.

783 784 785 786
- Issue #18279: Format - Strip trailing whitespace no longer marks a file as
  changed when it has not been changed. This fix followed the addition of a
  test file originally written by Phil Webster (the issue's main goal).

787 788 789
- Issue #7136: In the Idle File menu, "New Window" is renamed "New File".
  Patch by Tal Einat, Roget Serwy, and Todd Rovito.

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790 791
- Remove dead imports of imp.

792 793
- Issue #18196: Avoid displaying spurious SystemExit tracebacks.

794 795
- Issue #5492: Avoid traceback when exiting IDLE caused by a race condition.

796 797 798
- Issue #17511: Keep IDLE find dialog open after clicking "Find Next".
  Original patch by Sarah K.

799 800
- Issue #18055: Move IDLE off of imp and on to importlib.

801
- Issue #15392: Create a unittest framework for IDLE.
802
  Initial patch by Rajagopalasarma Jayakrishnan.
803
  See Lib/idlelib/idle_test/README.txt for how to run Idle tests.
804

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- Issue #14146: Highlight source line while debugging on Windows.

807 808 809
- Issue #17532: Always include Options menu for IDLE on OS X.
  Patch by Guilherme Simões.

810 811 812
Tests
-----

813 814
- Issue #14407: Fix unittest test discovery in test_concurrent_futures.

815 816 817
- Issue #18919: Unified and extended tests for audio modules: aifc, sunau and
  wave.

818 819 820 821
- Issue #18952: Fix regression in support data downloads introduced when
  test.support was converted to a package. Regression noticed by Zachary
  Ware.

822 823
- Issue #12037: Fix test_email for desktop Windows.

824 825 826 827 828
- Issue #15507: test_subprocess's test_send_signal could fail if the test
  runner were run in an environment where the process inherited an ignore
  setting for SIGINT.  Restore the SIGINT handler to the desired
  KeyboardInterrupt raising one during that test.

829 830 831 832
- Issue #18792: Use "127.0.0.1" or "::1" instead of "localhost" as much as
  possible, since "localhost" goes through a DNS lookup under recent Windows
  versions.

833 834 835
- Issue #1666318: Add a test that shutil.copytree() retains directory
  permissions.  Patch by Catherine Devlin.

836 837 838
- Issue #18357: add tests for dictview set difference.
  Patch by Fraser Tweedale.

839 840 841
- Issue #18273: move the tests in Lib/test/json_tests to Lib/test/test_json
  and make them discoverable by unittest.  Patch by Zachary Ware.

842 843
- Fix a fcntl test case on KFreeBSD, Debian #708653 (Petr Salinger).

844 845 846
- Issue #18396: Fix spurious test failure in test_signal on Windows when
  faulthandler is enabled (Patch by Jeremy Kloth)

847 848
- Issue #17046: Fix broken test_executable_without_cwd in test_subprocess.

849 850 851
- Issue #15415: Add new temp_dir() and change_cwd() context managers to
  test.support, and refactor temp_cwd() to use them.  Patch by Chris Jerdonek.

852 853 854
- Issue #15494: test.support is now a package rather than a module (Initial
  patch by Indra Talip)

855 856 857 858
- Issue #17944: test_zipfile now discoverable and uses subclassing to
  generate tests for different compression types.  Fixed a bug with skipping
  some tests due to use of exhausted iterators.

859 860 861
- Issue #18266: test_largefile now works with unittest test discovery and
  supports running only selected tests.  Patch by Zachary Ware.

862 863 864
- Issue #17767: test_locale now works with unittest test discovery.
  Original patch by Zachary Ware.

865 866 867
- Issue #18375: Assume --randomize when --randseed is used for running the
  testsuite.

868 869
- Issue #11185: Fix test_wait4 under AIX.  Patch by Sébastien Sablé.

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- Issue #17691: test_univnewlines now works with unittest test discovery.
  Patch by Zachary Ware.

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- Issue #18094: test_uuid no more reports skipped tests as passed.

875 876
- Issue #11995: test_pydoc doesn't import all sys.path modules anymore.

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Documentation
-------------

880 881 882
- Issue #19392: Document that `imp.reload()` now also requires `__loader__` to
  be set on the module being reloaded.

883 884
- Issue #18758: Fixed and improved cross-references.

885 886
- Issue #18743: Fix references to non-existant "StringIO" module.

887 888 889
- Issue #18783: Removed existing mentions of Python long type in docstrings,
  error messages and comments.

890 891
- Issue #17701: Improving strftime documentation.

892 893 894
- Issue #18440: Clarify that `hash()` can truncate the value returned from an
  object's custom `__hash__()` method.

895 896 897
- Issue #17953: Mention that you shouldn't replace sys.modules and deleting key
  items will cause Python to not be happy.

898 899
- Issue #17844: Add links to encoders and decoders for bytes-to-bytes codecs.

900 901
- Issue #14097: improve the "introduction" page of the tutorial.

902 903 904
- Issue #17977: The documentation for the cadefault argument's default value
  in urllib.request.urlopen() is fixed to match the code.

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Tools/Demos
-----------

908 909 910
- Issue #18873: 2to3 and the findnocoding.py script now detect Python source
  code encoding only in comment lines.

911 912
- Issue #18817: Fix a resource warning in Lib/aifc.py demo.

913 914
- Issue #18439: Make patchcheck work on Windows for ACKS, NEWS.

915 916
- Issue #18448: Fix a typo in Tools/demo/eiffel.py.

917 918 919
- Issue #18457: Fixed saving of formulas and complex numbers in
  Tools/demo/ss1.py.

920 921 922
- Issue #18449: Make Tools/demo/ss1.py work again on Python 3.  Patch by
  Févry Thibault.

923 924
- Issue #15239: Make mkstringprep.py work again on Python 3.

925 926 927
- Issue #12990: The "Python Launcher" on OSX could not launch python scripts
  that have paths that include wide characters.

928 929 930
Build
-----

931 932 933
- Issue #19356: Avoid using a C variabled named "_self", it's a reserved
  word in some C compilers.

934 935
- Issue #19130: Correct PCbuild/readme.txt, Python 3.3 and 3.4 require VS 2010.

936 937
- Issue #16067: Add description into MSI file to replace installer's temporary name.

938 939 940
- Issue #18256: Compilation fix for recent AIX releases.  Patch by
  David Edelsohn.

941 942
- Issue #15172: Document NASM 2.10+ as requirement for building OpenSSL 1.0.1
  on Windows.
943

944 945 946
- Issue #1584: Provide options to override default search paths for
  Tcl and Tk when building _tkinter.

947 948 949 950 951 952
- Issue #15663: Tcl/Tk 8.5.15 is now included with the OS X 10.6+
  64-bit/32-bit installer for 10.6+.  It is no longer necessary
  to install a third-party version of Tcl/Tk 8.5 to work around the
  problems in the Apple-supplied Tcl/Tk 8.5 shipped in OS X 10.6
  and later releases.

953 954 955 956 957
- 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.

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959
What's New in Python 3.3.2?
Georg Brandl's avatar
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===========================

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*Release date: 13-May-2013*
963 964 965 966

Core and Builtins
-----------------

967 968
- Issue #17237: Fix crash in the ASCII decoder on m68k.

969 970 971
- Issue #17408: Avoid using an obsolete instance of the copyreg module when
  the interpreter is shutdown and then started again.

972 973 974
- Issue #17863: In the interactive console, don't loop forever if the encoding
  can't be fetched from stdin.

975 976
- Issue #17867: Raise an ImportError if __import__ is not found in __builtins__.

977 978 979
- Issue #17857: Prevent build failures with pre-3.5.0 versions of sqlite3,
  such as was shipped with Centos 5 and Mac OS X 10.4.

980 981 982 983
- Issue #17413: sys.settrace callbacks were being passed a string instead of an
  exception instance for the 'value' element of the arg tuple if the exception
  originated from C code; now an exception instance is always provided.

984 985 986
- Issue #17782: Fix undefined behaviour on platforms where
  ``struct timespec``'s "tv_nsec" member is not a C long.

987 988 989
- Issue #17715: Fix segmentation fault from raising an exception in a __trunc__
  method.

990 991 992
- Issue #16447: Fixed potential segmentation fault when setting __name__ on a
  class.

993 994
- Issue #17669: Fix crash involving finalization of generators using yield from.

995 996
- Issue #17619: Make input() check for Ctrl-C correctly on Windows.

997 998
- Issue #17610: Don't rely on non-standard behavior of the C qsort() function.

999 1000
- Issue #17357: Add missing verbosity output when using -v/-vv.

1001 1002 1003
Library
-------

1004
- Issue #17606: Fixed support of encoded byte strings in the XMLGenerator
1005
  characters() and ignorableWhitespace() methods.  Original patch by Sebastian
1006 1007
  Ortiz Vasquez.

1008 1009 1010
- Issue #17732: Ignore distutils.cfg options pertaining to install paths if a
  virtual environment is active.

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- Issue #1159051: Back out a fix for handling corrupted gzip files that
  broke backwards compatibility.

- Issue #17915: Fix interoperability of xml.sax with file objects returned by
  codecs.open().

1017 1018 1019
- Issue #16601: Restarting iteration over tarfile no more continues from where
  it left off.  Patch by Michael Birtwell.

1020 1021 1022 1023
- Issue #17289: The readline module now plays nicer with external modules
  or applications changing the rl_completer_word_break_characters global
  variable.  Initial patch by Bradley Froehle.

1024 1025 1026
- Issue #12181: select module: Fix struct kevent definition on OpenBSD 64-bit
  platforms. Patch by Federico Schwindt.

1027 1028 1029
- Issue #14173: Avoid crashing when reading a signal handler during
  interpreter shutdown.

1030 1031
- Issue #16316: mimetypes now recognizes the .xz and .txz (.tar.xz) extensions.

1032 1033 1034
- Issue #15902: Fix imp.load_module() accepting None as a file when loading an
  extension module.

1035 1036 1037
- Issue #17802: Fix an UnboundLocalError in html.parser.  Initial tests by
  Thomas Barlow.

1038 1039 1040
- Issue #15535: Fix namedtuple pickles which were picking up the OrderedDict
  instead of just the underlying tuple.

1041 1042 1043
- Issue #17192: Restore the patch for Issue #11729 which was ommitted in
  3.3.1 when updating the bundled version of libffi used by ctypes.  Update
  many libffi files that were missed in 3.3.1's update to libffi-3.0.13.
Gregory P. Smith's avatar
Gregory P. Smith committed
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1045 1046 1047
- Issue #17358: Modules loaded by imp.load_source() and load_compiled() (and by
  extention load_module()) now have a better chance of working when reloaded.

1048 1049
- Issue #17353: Plistlib emitted empty data tags with deeply nested datastructures

1050 1051 1052
- Issue #11714: Use 'with' statements to assure a Semaphore releases a
  condition variable.  Original patch by Thomas Rachel.

1053 1054 1055
- Issue #17795: Reverted backwards-incompatible change in SysLogHandler with
  Unix domain sockets.

1056 1057 1058
- Issue #17555: Fix ForkAwareThreadLock so that size of after fork
  registry does not grow exponentially with generation of process.

1059 1060 1061
- Issue #17707: multiprocessing.Queue's get() method does not block for short
  timeouts.

1062 1063 1064
- Isuse #17720: Fix the Python implementation of pickle.Unpickler to correctly
  process the APPENDS opcode when it is used on non-list objects.

1065 1066 1067
- Issue #17012: shutil.which() no longer fallbacks to the PATH environment
  variable if empty path argument is specified.  Patch by Serhiy Storchaka.

1068 1069
- Issue #17710: Fix pickle raising a SystemError on bogus input.

1070 1071 1072
- Issue #17341: Include the invalid name in the error messages from re about
  invalid group names.

1073 1074 1075 1076
- Issue #17702: os.environ now raises KeyError with the original environment
  variable name (str on UNIX), instead of using the encoded name (bytes on
  UNIX).

1077 1078 1079
- Issue #16163: Make the importlib based version of pkgutil.iter_importers
  work for submodules. Initial patch by Berker Peksag.

1080 1081 1082
- Issue #16804: Fix a bug in the 'site' module that caused running
  'python -S -m site' to incorrectly throw an exception.

1083 1084 1085
- Issue #17016: Get rid of possible pointer wraparounds and integer overflows
  in the re module.  Patch by Nickolai Zeldovich.

1086 1087 1088
- Issue #16658: add missing return to HTTPConnection.send()
  Patch by Jeff Knupp.

1089 1090 1091
- Issue #14971: unittest test discovery no longer gets confused when a function
  has a different __name__ than its name in the TestCase class dictionary.

1092 1093 1094
- Issue #17678: Fix DeprecationWarning in the http/cookiejar.py by changing the
  usage of get_origin_req_host() to origin_req_host.

1095 1096
- Issue #17666: Fix reading gzip files with an extra field.

1097 1098 1099
- Issue #17502: Process DEFAULT values in mock side_effect that returns iterator.
  Patch by Michael Foord.

1100 1101 1102
- Issue #17572: Avoid chained exceptions while passing bad directives to
  time.strptime().  Initial patch by Claudiu Popa.

1103 1104 1105 1106 1107 1108
- Issue #17435: threading.Timer's __init__ method no longer uses mutable
  default values for the args and kwargs parameters.

- Issue #17526: fix an IndexError raised while passing code without filename to
  inspect.findsource().  Initial patch by Tyler Doyle.

1109 1110 1111
- Issue #16550: Update the opcode descriptions of pickletools to use unsigned
  integers where appropriate.  Initial patch by Serhiy Storchaka.

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IDLE
----

1115 1116
- Issue #17838: Allow sys.stdin to be reassigned.

1117 1118
- Issue #13495: Avoid loading the color delegator twice in IDLE.

1119 1120
- Issue #17798: Allow IDLE to edit new files when specified on command line.

1121 1122
- Issue #14735: Update IDLE docs to omit "Control-z on Windows".

1123 1124
- Issue #17585: Fixed IDLE regression. Now closes when using exit() or quit().

1125 1126 1127
- Issue #17657: Show full Tk version in IDLE's about dialog.
  Patch by Todd Rovito.

1128 1129
- Issue #17613: Prevent traceback when removing syntax colorizer in IDLE.

1130 1131
- Issue #1207589: Backwards-compatibility patch for right-click menu in IDLE.

1132 1133
- Issue #16887: IDLE now accepts Cancel in tabify/untabify dialog box.

1134 1135
- Issue #17625: In IDLE, close the replace dialog after it is used.

1136 1137
- Issue #14254: IDLE now handles readline correctly across shell restarts.

1138 1139
- Issue #17614: IDLE no longer raises exception when quickly closing a file.

1140 1141
- Issue #6698: IDLE now opens just an editor window when configured to do so.

1142 1143 1144
- Issue #8900: Using keyboard shortcuts in IDLE to open a file no longer
  raises an exception.

1145 1146
- Issue #6649: Fixed missing exit status in IDLE. Patch by Guilherme Polo.

1147 1148 1149
Tests
-----

1150 1151 1152
- Issue #17833: Fix test_gdb failures seen on machines where debug symbols
  for glibc are available (seen on PPC64 Linux).

1153 1154 1155
- Issue #7855: Add tests for ctypes/winreg for issues found in IronPython.
  Initial patch by Dino Viehland.

1156 1157
- Issue #17712: Fix test_gdb failures on Ubuntu 13.04.

1158 1159 1160
- Issue #17835: Fix test_io when the default OS pipe buffer size is larger
  than one million bytes.

1161 1162 1163
- Issue #17065: Use process-unique key for winreg tests to avoid failures if
  test is run multiple times in parallel (eg: on a buildbot host).

1164 1165 1166
- Issue #12820: add tests for the xml.dom.minicompat module.
  Patch by John Chandler and Phil Connell.

1167 1168 1169
- Issue #17790: test_set now works with unittest test discovery.
  Patch by Zachary Ware.

1170 1171 1172
- Issue #17789: test_random now works with unittest test discovery.
  Patch by Zachary Ware.

1173 1174 1175
- Issue #17779: test_osx_env now works with unittest test discovery.
  Patch by Zachary Ware.

1176 1177 1178
- Issue #17766: test_iterlen now works with unittest test discovery.
  Patch by Zachary Ware.

1179 1180 1181
- Issue #17690: test_time now works with unittest test discovery.
  Patch by Zachary Ware.

1182 1183 1184
- Issue #17692: test_sqlite now works with unittest test discovery.
  Patch by Zachary Ware.

1185 1186 1187
- Issue #17843: Removed bz2 test data file that was triggering false-positive
  virus warnings with certain antivirus software.

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Documentation
-------------

- Issue #15940: Specify effect of locale on time functions.

1193 1194 1195
- Issue #6696: add documentation for the Profile objects, and improve
  profile/cProfile docs.  Patch by Tom Pinckney.

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1196 1197 1198
- Issue #17915: Fix interoperability of xml.sax with file objects returned by
  codecs.open().

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Build
-----

- Issue #17547: In configure, explicitly pass -Wformat for the benefit for GCC
  4.8.

1205 1206
- Issue #17962: Build with OpenSSL 1.0.1e on Windows.

1207 1208 1209 1210 1211

What's New in Python 3.3.1?
===========================

*Release date: 07-Apr-2013*
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Build
-----

- Issue #17550: Fix the --enable-profiling configure switch.

1218
IDLE
1219 1220 1221 1222
-------

- Issue #17625: In IDLE, close the replace dialog after it is used.

1223

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What's New in Python 3.3.1 release candidate 1?
===============================================
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*Release date: 24-Mar-2013*
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Core and Builtins
-----------------

1232 1233
- Issue #17328: Fix possible refleak in dict.setdefault.

1234 1235 1236
- Issue #17223: Fix PyUnicode_FromUnicode() for string of 1 character outside
  the range U+0000-U+10ffff.

1237 1238 1239
- Issue #1692335: Move initial args assignment to
  BaseException.__new__ to help pickling of naive subclasses.

1240 1241 1242
- Issue #17275: Corrected class name in init error messages of the C version of
  BufferedWriter and BufferedRandom.

1243 1244 1245
- Issue #7963: Fixed misleading error message that issued when object is
  called without arguments.

1246 1247 1248
- Issue #5308: Raise ValueError when marshalling too large object (a sequence
  with size >= 2**31), instead of producing illegal marshal data.

1249 1250 1251
- Issue #12983: Bytes literals with invalid \x escape now raise a SyntaxError
  and a full traceback including line number.

1252 1253 1254
- Issue #17173: Remove uses of locale-dependent C functions (isalpha() etc.)
  in the interpreter.

1255 1256 1257
- Issue #17137: When an Unicode string is resized, the internal wide character
  string (wstr) format is now cleared.

1258 1259
- Issue #17043: The unicode-internal decoder no longer read past the end of
  input buffer.
1260

1261 1262 1263
- Issue #17098: All modules now have __loader__ set even if they pre-exist the
  bootstrapping of importlib.

1264 1265
- Issue #16979: Fix error handling bugs in the unicode-escape-decode decoder.

1266 1267 1268
- Issue #10156: In the interpreter's initialization phase, unicode globals
  are now initialized dynamically as needed.

1269 1270 1271
- Issue #16980: Fix processing of escaped non-ascii bytes in the
  unicode-escape-decode decoder.

1272 1273
- Issue #16975: Fix error handling bug in the escape-decode bytes decoder.

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1274
- Issue #14850: Now a charmap decoder treats U+FFFE as "undefined mapping"
1275 1276
  in any mapping, not only in a string.

1277 1278 1279 1280 1281
- Issue #16730: importlib.machinery.FileFinder now no longers raises an
  exception when trying to populate its cache and it finds out the directory is
  unreadable or has turned into a file. Reported and diagnosed by
  David Pritchard.

1282 1283 1284
- Issue #16906: Fix a logic error that prevented most static strings from being
  cleared.

1285 1286 1287
- Issue #11461: Fix the incremental UTF-16 decoder. Original patch by
  Amaury Forgeot d'Arc.

1288 1289 1290
- Issue #16856: Fix a segmentation fault from calling repr() on a dict with
  a key whose repr raise an exception.

1291 1292
- Issue #16367: Fix FileIO.readall() on Windows for files larger than 2 GB.

1293 1294 1295 1296 1297 1298
- Issue #16455: On FreeBSD and Solaris, if the locale is C, the
  ASCII/surrogateescape codec is now used, instead of the locale encoding, to
  decode the command line arguments. This change fixes inconsistencies with
  os.fsencode() and os.fsdecode() because these operating systems announces an
  ASCII locale encoding, whereas the ISO-8859-1 encoding is used in practice.

1299
- Issue #16761: Calling int() with base argument only now raises TypeError.
1300

1301
- Issue #16759: Support the full DWORD (unsigned long) range in Reg2Py
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1302
  when retrieving a REG_DWORD value. This corrects functions like
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  winreg.QueryValueEx that may have been returning truncated values.

1305 1306 1307
- Issue #14420: Support the full DWORD (unsigned long) range in Py2Reg
  when passed a REG_DWORD value. Fixes OverflowError in winreg.SetValueEx.

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1308 1309
- Issue #16597: In buffered and text IO, call close() on the underlying stream
  if invoking flush() fails.
1310

1311 1312 1313
- Issue #16722: In the bytes() constructor, try to call __bytes__ on the
  argument before __index__.

1314 1315 1316 1317
- Issue #16602: When a weakref's target was part of a long deallocation
  chain, the object could remain reachable through its weakref even though
  its refcount had dropped to zero.

1318 1319 1320 1321 1322 1323
- Issue #16416: On Mac OS X, operating system data are now always
  encoded/decoded to/from UTF-8/surrogateescape, instead of the locale encoding
  (which may be ASCII if no locale environment variable is set), to avoid
  inconsistencies with os.fsencode() and os.fsdecode() functions which are
  already using UTF-8/surrogateescape.

1324 1325
- Issue #16588: Silence unused-but-set warnings in Python/thread_pthread

1326 1327
- Issue #16546: Fix: ast.YieldFrom argument is now mandatory.

1328 1329 1330
- Issue #16514: Fix regression causing a traceback when sys.path[0] is None
  (actually, any non-string or non-bytes type).

1331 1332 1333
- Issue #16306: Fix multiple error messages when unknown command line
  parameters where passed to the interpreter.  Patch by Hieu Nguyen.

1334 1335 1336
- Issue #16215: Fix potential double memory free in str.replace().  Patch
  by Serhiy Storchaka.

1337 1338
- Issue #16453: Fix equality testing of dead weakref objects.

1339 1340 1341
- Issue #9535: Fix pending signals that have been received but not yet
  handled by Python to not persist after os.fork() in the child process.

1342
- Issue #15001: fix segfault on "del sys.modules['__main__']". Patch by Victor
1343 1344
  Stinner.

1345 1346 1347 1348
- Issue #8271: the utf-8 decoder now outputs the correct number of U+FFFD
  characters when used with the 'replace' error handler on invalid utf-8
  sequences.  Patch by Serhiy Storchaka, tests by Ezio Melotti.

1349
- Issue #5765: Apply a hard recursion limit in the compiler instead of
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  blowing the stack and segfaulting. Initial patch by Andrea Griffini.
1351

1352 1353 1354
- Issue #16402: When slicing a range, fix shadowing of exceptions from
  __index__.

1355 1356 1357
- Issue #16336: fix input checking in the surrogatepass error handler.
  Patch by Serhiy Storchaka.

1358 1359 1360
- Issue #8401: assigning an int to a bytearray slice (e.g. b[3:4] = 5) now
  raises an error.

1361 1362 1363
- Fix segfaults on setting __qualname__ on builtin types and attempting to
  delete it on any type.

1364
- Issue #16345: Fix an infinite loop when ``fromkeys`` on a dict subclass
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  received a nonempty dict from the constructor.
1366

1367 1368 1369
- Issue #16271: Fix strange bugs that resulted from __qualname__ appearing in a
  class's __dict__ and on type.

1370 1371 1372
- Issue #6074: Ensure cached bytecode files can always be updated by the
  user that created them, even when the source file is read-only.

1373 1374 1375
- Issue #14783: Improve int() docstring and switch docstrings for str(),
  range(), and slice() to use multi-line signatures.

1376 1377
- Issue #16160: Subclass support now works for types.SimpleNamespace.

1378 1379 1380
- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
  decoder (already working as unicode strings).  Patch by Serhiy Storchaka.

1381 1382 1383
- Issue #15144: Fix possible integer overflow when handling pointers as integer
  values, by using `Py_uintptr_t` instead of `size_t`.  Patch by Serhiy
  Storchaka.
1384

1385 1386
- Issue #15965: Explicitly cast `AT_FDCWD` as (int).  Required on Solaris 10
  (which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms.
1387

1388
- Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors.
1389

1390
- Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
1391 1392 1393 1394 1395
  exception handler on code with syntax errors.

- Issue #15801: Make sure mappings passed to '%' formatting are actually
  subscriptable.

1396 1397 1398 1399
- Issue #15111: __import__ should let ImportError propagate when a module that
  is imported as a side-effect of using fromlist tries to import a module
  that cannot be found.

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Library
-------

1403 1404
- Issue #17540: Added style to formatter configuration by dict.

1405 1406 1407
- Issue #17536: Add to webbrowser's browser list: www-browser, x-www-browser,
  iceweasel, iceape.

1408 1409 1410 1411 1412
- Issue #17488: Change the subprocess.Popen bufsize parameter default value
  from unbuffered (0) to buffering (-1) to match the behavior existing code
  expects and match the behavior of the subprocess module in Python 2 to avoid
  introducing hard to track down bugs.

1413 1414 1415
- Issue #17521: Corrected non-enabling of logger following two calls to
  fileConfig().

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1416 1417 1418
- Issue #17508: Corrected MemoryHandler configuration in dictConfig() where
  the target handler wasn't configured first.

1419 1420 1421
- Issue #17209: curses.window.get_wch() now handles correctly KeyboardInterrupt
  (CTRL+c).

1422 1423 1424 1425
- Issue #5713: smtplib now handles 421 (closing connection) error codes when
  sending mail by closing the socket and reporting the 421 error code via the
  exception appropriate to the command that received the error response.

1426 1427 1428 1429
- Issue #17192: Update the ctypes module's libffi to v3.0.13.  This
  specifically addresses a stack misalignment issue on x86 and issues on
  some more recent platforms.

1430 1431
- Issue #8862: Fixed curses cleanup when getkey is interrputed by a signal.

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1432
- Issue #17443: imaplib.IMAP4_stream was using the default unbuffered IO
1433 1434 1435
  in subprocess, but the imap code assumes buffered IO.  In Python2 this
  worked by accident.  IMAP4_stream now explicitly uses buffered IO.

1436 1437 1438
- Issue #17476: Fixed regression relative to Python2 in undocumented pydoc
  'allmethods'; it was missing unbound methods on the class.

1439
- Issue #16880: Do not assume _imp.load_dynamic() is defined in the imp module.
1440

1441
- Issue #16389: Fixed a performance regression relative to Python 3.1 in the
1442 1443
  caching of compiled regular expressions.

1444 1445
- Issue #17431: Fix missing import of BytesFeedParser in email.parser.

1446 1447 1448
- Issue #1285086: Get rid of the refcounting hack and speed up
  urllib.parse.unquote() and urllib.parse.unquote_to_bytes().

1449 1450 1451 1452
- Issue #17368: Fix an off-by-one error in the Python JSON decoder that caused
  a failure while decoding empty object literals when object_pairs_hook was
  specified.

1453 1454 1455 1456 1457
- Issue #14645: The email generator classes now produce output using the
  specified linesep throughout.  Previously if the prolog, epilog, or
  body were stored with a different linesep, that linesep was used.  This
  fix corrects an RFC non-compliance issue with smtplib.send_message.

1458 1459 1460
- Issue #17278: Fix a crash in heapq.heappush() and heapq.heappop() when
  the list is being resized concurrently.

1461 1462 1463
- Issue #16962: Use getdents64 instead of the obsolete getdents syscall
  in the subprocess module on Linux.

1464 1465
- Issue #17018: Make Process.join() retry if os.waitpid() fails with EINTR.

1466 1467 1468 1469
- Issue #17223: array module: Fix a crasher when converting an array containing
  invalid characters (outside range [U+0000; U+10ffff]) to Unicode:
  repr(array), str(array) and array.tounicode(). Patch written by Manuel Jacob.

1470 1471 1472
- Issue #14720: sqlite3: Convert datetime microseconds correctly.
  Patch by Lowe Thiderman.

1473 1474 1475
- Issue #17225: JSON decoder now counts columns in the first line starting
  with 1, as in other lines.

1476 1477 1478
- Issue #13700: Fix byte/string handling in imaplib authentication when an
  authobject is specified.

1479 1480 1481
- Issue #13153: Tkinter functions now raise TclError instead of ValueError when
  a string argument contains non-BMP character.

1482 1483 1484
- Issue #9669: Protect re against infinite loops on zero-width matching in
  non-greedy repeat.  Patch by Matthew Barnett.

1485 1486 1487 1488
- Issue #13169: The maximal repetition number in a regular expression has been
  increased from 65534 to 2147483647 (on 32-bit platform) or 4294967294 (on
  64-bit).

1489 1490 1491
- Issue #17143: Fix a missing import in the trace module.  Initial patch by
  Berker Peksag.

1492 1493
- Issue #16743: Fix mmap overflow check on 32 bit Windows.

1494 1495 1496
- Issue #16800: tempfile.gettempdir() no longer left temporary files when
  the disk is full.  Original patch by Amir Szekely.

1497 1498 1499
- Issue #16564: Fixed regression relative to Python2 in the operation of
  email.encoders.encode_7or8bit when used with binary data.

1500
- Issue #17052: unittest discovery should use self.testLoader.
1501

1502 1503
- Issue #4591: Uid and gid values larger than 2**31 are supported now.

1504 1505
- Issue #17141: random.vonmisesvariate() no more hangs for large kappas.

1506 1507 1508
- Issue #17149: Fix random.vonmisesvariate to always return results in
  [0, 2*math.pi].

1509 1510
- Issue #1470548: XMLGenerator now works with binary output streams.

1511 1512 1513
- Issue #6975: os.path.realpath() now correctly resolves multiple nested
  symlinks on POSIX platforms.

1514 1515 1516
- Issue #16564: Fixed regression relative to Python2 in the operation of
  email.encoders.encode_noop when used with binary data.

1517 1518 1519 1520
- Issue #10355: The mode, name, encoding and newlines properties now work on
  SpooledTemporaryFile objects even when they have not yet rolled over.
  Obsolete method xreadline (which has never worked in Python 3) has been
  removed.
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1522 1523 1524 1525 1526 1527
- Issue #16686: Fixed a lot of bugs in audioop module.  Fixed crashes in
  avgpp(), maxpp() and ratecv().  Fixed an integer overflow in add(), bias(),
  and ratecv().  reverse(), lin2lin() and ratecv() no more lose precision for
  32-bit samples.  max() and rms() no more returns a negative result and
  various other functions now work correctly with 32-bit sample -0x80000000.

1528 1529
- Issue #17073: Fix some integer overflows in sqlite3 module.

1530 1531
- Issue #16723: httplib.HTTPResponse no longer marked closed when the connection
  is automatically closed.
1532 1533 1534 1535

- Issue #16948: Fix quoted printable body encoding for non-latin1 character
  sets in the email package.

1536 1537 1538
- Issue #16811: Fix folding of headers with no value in the provisional email
  policies.

1539 1540
- Issue #17132: Update symbol for "yield from" grammar changes.

1541 1542 1543
- Issue #17076: Make copying of xattrs more permissive of missing FS support.
  Patch by Thomas Wouters.

1544 1545 1546 1547
- Issue #17089: Expat parser now correctly works with string input not only when
  an internal XML encoding is UTF-8 or US-ASCII.  It now accepts bytes and
  strings larger than 2 GiB.

1548 1549 1550
- Issue #6083: Fix multiple segmentation faults occured when PyArg_ParseTuple
  parses nested mutating sequence.

1551 1552
- Issue #5289: Fix ctypes.util.find_library on Solaris.

1553 1554 1555 1556
- Issue #17106: Fix a segmentation fault in io.TextIOWrapper when an underlying
  stream or a decoder produces data of an unexpected type (i.e. when
  io.TextIOWrapper initialized with text stream or use bytes-to-bytes codec).

1557 1558 1559
- Issue #15633: httplib.HTTPResponse is now mark closed when the server
  sends less than the advertised Content-Length.

1560 1561 1562
- Issue #12268: The io module file object write methods no longer abort early
  when one of its write system calls is interrupted (EINTR).

1563 1564 1565
- Issue #6972: The zipfile module no longer overwrites files outside of
  its destination path when extracting malicious zip files.

1566 1567 1568 1569
- Issue #4844: ZipFile now raises BadZipFile when opens a ZIP file with an
  incomplete "End of Central Directory" record.  Original patch by Guilherme
  Polo and Alan McIntyre.

1570 1571 1572
- Issue #17071: Signature.bind() now works when one of the keyword arguments
  is named ``self``.

1573 1574 1575
- Issue #12004: Fix an internal error in PyZipFile when writing an invalid
  Python file.  Patch by Ben Morgan.

1576 1577 1578
- Issue #1602133: on Mac OS X a shared library build (``--enable-shared``)
  now fills the ``os.environ`` variable correctly.

1579 1580 1581
- Issue #15505: `unittest.installHandler` no longer assumes SIGINT handler is
  set to a callable object.

1582 1583 1584
- Issue #13454: Fix a crash when deleting an iterator created by itertools.tee()
  if all other iterators were very advanced before.

1585 1586 1587
- Issue #12411: Fix to cgi.parse_multipart to correctly use bytes boundaries
  and bytes data. Patch by Jonas Wagner.

1588 1589 1590 1591
- Issue #16957: shutil.which() no longer searches a bare file name in the
  current directory on Unix and no longer searches a relative file path with
  a directory part in PATH directories.  Patch by Thomas Kluyver.

1592 1593 1594
- Issue #16993: shutil.which() now preserves the case of the path and extension
  on Windows.

1595 1596 1597
- Issue #16992: On Windows in signal.set_wakeup_fd, validate the file
  descriptor argument.

1598 1599
- Issue #16422: For compatibility with the Python version, the C version of
  decimal now uses strings instead of integers for rounding mode constants.
1600

1601 1602 1603
- Issue #15861: tkinter now correctly works with lists and tuples containing
  strings with whitespaces, backslashes or unbalanced braces.

1604 1605
- Issue #10527: Use poll() instead of select() for multiprocessing pipes.

1606 1607 1608
- Issue #9720: zipfile now writes correct local headers for files larger than
  4 GiB.

1609 1610 1611
- Issue #16955: Fix the poll() method for multiprocessing's socket
  connections on Windows.

1612 1613
- SSLContext.load_dh_params() now properly closes the input file.

1614 1615
- Issue #16900: Issue a ResourceWarning when an ssl socket is left unclosed.

1616 1617 1618
- Issue #13899: \A, \Z, and \B now correctly match the A, Z, and B literals
  when used inside character classes (e.g. '[\A]').  Patch by Matthew Barnett.

1619 1620 1621 1622
- Issue #15545: Fix regression in sqlite3's iterdump method where it was
  failing if the connection used a row factory (such as sqlite3.Row) that
  produced unsortable objects. (Regression was introduced by fix for 9750).

1623 1624 1625
- Issue #15972: Fix error messages when os functions expecting a file name or
  file descriptor receive the incorrect type.

1626 1627
- Issue #16828: Fix error incorrectly raised by bz2.compress(b'') and
  bz2.BZ2Compressor.compress(b''). Initial patch by Martin Packman.
1628

1629 1630
- Issue #16541: tk_setPalette() now works with keyword arguments.

1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641
- Issue #16820: In configparser, `parser.popitem()` no longer raises ValueError.
  This makes `parser.clean()` work correctly.

- Issue #16820: In configparser, ``parser['section'] = {}`` now preserves
  section order within the parser. This makes `parser.update()` preserve section
  order as well.

- Issue #16820: In configparser, ``parser['DEFAULT'] = {}`` now correctly
  clears previous values stored in the default section. Same goes for
  ``parser.update({'DEFAULT': {}})``.

1642 1643
- Issue #9586: Redefine SEM_FAILED on MacOSX to keep compiler happy.

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1644
- Issue #10527: make multiprocessing use poll() instead of select() if available.
1645

1646 1647
- Issue #16688: Now regexes contained backreferences correctly work with
  non-ASCII strings.  Patch by Matthew Barnett.
1648

1649 1650
- Issue #16485: Now file descriptors are closed if file header patching failed
  on closing an aifc file.
1651

1652 1653
- Issue #16165: sched.scheduler.run() no longer blocks a scheduler for other
  threads.
1654

1655
- Issue #16641: Default values of sched.scheduler.enter() are no longer
1656 1657
  modifiable.

1658 1659 1660
- Issue #16618: Make glob.glob match consistently across strings and bytes
  regarding leading dots.  Patch by Serhiy Storchaka.

1661 1662 1663
- Issue #16713: Parsing of 'tel' urls using urlparse separates params from
  path.

1664 1665 1666
- Issue #16443: Add docstrings to regular expression match objects.
  Patch by Anton Kasyanov.

1667 1668
- Issue #15701: Fix HTTPError info method call to return the headers information.

1669 1670
- Issue #16752: Add a missing import to modulefinder. Patch by Berker Peksag.

1671 1672 1673
- Issue #16646: ftplib.FTP.makeport() might lose socket error details.
  (patch by Serhiy Storchaka)

1674 1675 1676 1677
- Issue #16626: Fix infinite recursion in glob.glob() on Windows when the
  pattern contains a wildcard in the drive or UNC path.  Patch by Serhiy
  Storchaka.

1678 1679 1680 1681
- Issue #15783: Except for the number methods, the C version of decimal now
  supports all None default values present in decimal.py. These values were
  largely undocumented.

1682 1683 1684 1685
- Issue #16298: In HTTPResponse.read(), close the socket when there is no
  Content-Length and the incoming stream is finished.  Patch by Eran
  Rundstein.

1686 1687 1688 1689
- Issue #15872: Fix 3.3 regression introduced by the new fd-based shutil.rmtree
  that caused it to not ignore certain errors when ignore_errors was set.
  Patch by Alessandro Moura and Serhiy Storchaka.

1690 1691 1692
- Issue #16248: Disable code execution from the user's home directory by
  tkinter when the -E flag is passed to Python.  Patch by Zachary Ware.

1693 1694
- Issue #16628: Fix a memory leak in ctypes.resize().

1695 1696 1697
- Issue #13614: Fix setup.py register failure with invalid rst in description.
  Patch by Julien Courteau and Pierre Paul Lefebvre.

1698 1699 1700
- Issue #13512: Create ~/.pypirc securely (CVE-2011-4944).  Initial patch by
  Philip Jenvey, tested by Mageia and Debian.

1701 1702 1703
- Issue #7719: Make distutils ignore ``.nfs*`` files instead of choking later
  on.  Initial patch by SilentGhost and Jeff Ramnani.

1704 1705 1706
- Issue #13120: Allow to call pdb.set_trace() from thread.
  Patch by Ilya Sandler.

1707 1708 1709
- Issue #16585: Make CJK encoders support error handlers that return bytes per
  PEP 383.

1710 1711 1712
- Issue #10182: The re module doesn't truncate indices to 32 bits anymore.
  Patch by Serhiy Storchaka.

Benjamin Peterson's avatar
Benjamin Peterson committed
1713 1714 1715 1716
- Issue #16573: In 2to3, treat enumerate() like a consuming call, so superfluous
  list() calls aren't added to filter(), map(), and zip() which are directly
  passed enumerate().

1717 1718 1719 1720
- Issue #12848: The pure Python pickle implementation now treats object
  lengths as unsigned 32-bit integers, like the C implementation does.
  Patch by Serhiy Storchaka.

1721 1722 1723
- Issue #16408: Fix file descriptors not being closed in error conditions
  in the zipfile module.  Patch by Serhiy Storchaka.

1724 1725
- Issue #16481: multiprocessing no longer leaks process handles on Windows.

1726 1727 1728
- Issue #16140: The subprocess module no longer double closes its child
  subprocess.PIPE parent file descriptors on child error prior to exec().

1729 1730 1731
- Remove a bare print to stdout from the subprocess module that could have
  happened if the child process wrote garbage to its pre-exec error pipe.

1732 1733 1734
- Issue #16327: The subprocess module no longer leaks file descriptors
  used for stdin/stdout/stderr pipes to the child when fork() fails.

1735 1736 1737
- Issue #14396: Handle the odd rare case of waitpid returning 0 when not
  expected in subprocess.Popen.wait().

1738 1739 1740
- Issue #16411: Fix a bug where zlib.decompressobj().flush() might try to access
  previously-freed memory. Patch by Serhiy Storchaka.

1741 1742 1743
- Issue #16357: fix calling accept() on a SSLSocket created through
  SSLContext.wrap_socket().  Original patch by Jeff McNeil.

1744 1745 1746 1747 1748
- Issue #16409: The reporthook callback made by the legacy
  urllib.request.urlretrieve API now properly supplies a constant non-zero
  block_size as it did in Python 3.2 and 2.7.  This matches the behavior of
  urllib.request.URLopener.retrieve.

1749 1750 1751
- Issue #16431: Use the type information when constructing a Decimal subtype
  from a Decimal argument.

1752
- Issue #16350: zlib.decompressobj().decompress() now accumulates data from
1753
  successive calls after EOF in unused_data, instead of only saving the argument
1754 1755 1756
  to the last call. decompressobj().flush() now correctly sets unused_data and
  unconsumed_tail. A bug in the handling of MemoryError when setting the
  unconsumed_tail attribute has also been fixed. Patch by Serhiy Storchaka.
1757

1758 1759 1760
- Issue #12759: sre_parse now raises a proper error when the name of the group
  is missing.  Initial patch by Serhiy Storchaka.

1761 1762 1763
- Issue #16152: fix tokenize to ignore whitespace at the end of the code when
  no newline is found.  Patch by Ned Batchelder.

1764 1765 1766
- Issue #16230: Fix a crash in select.select() when one the lists changes
  size while iterated on.  Patch by Serhiy Storchaka.

1767 1768 1769
- Issue #16228: Fix a crash in the json module where a list changes size
  while it is being encoded.  Patch by Serhiy Storchaka.

1770 1771 1772
- Issue #14897: Enhance error messages of struct.pack and
  struct.pack_into. Patch by Matti Mäki.

1773 1774 1775
- Issue #12890: cgitb no longer prints spurious <p> tags in text
  mode when the logdir option is specified.

1776 1777 1778
- Issue #16307: Fix multiprocessing.Pool.map_async not calling its callbacks.
  Patch by Janne Karila.

1779 1780
- Issue #16250: Fix URLError invocation with proper args.

1781
- Issue #16116: Fix include and library paths to be correct when building C
1782 1783
  extensions in venvs.

1784 1785
- Issue #16245: Fix the value of a few entities in html.entities.html5.

1786 1787
- Issue #14398: Fix size truncation and overflow bugs in the bz2 module.

1788 1789 1790
- Issue #16220: wsgiref now always calls close() on an iterable response.
  Patch by Brent Tubbs.

1791 1792 1793
- Issue #16270: urllib may hang when used for retrieving files via FTP by using
  a context manager.  Patch by Giampaolo Rodola'.

1794 1795 1796
- Issue #16461: Wave library should be able to deal with 4GB wav files,
  and sample rate of 44100 Hz.

1797 1798
- Issue #16176: Properly identify Windows 8 via platform.platform()

1799 1800 1801
- Issue #16114: The subprocess module no longer provides a misleading error
  message stating that args[0] did not exist when either the cwd or executable
  keyword arguments specified a path that did not exist.
1802

1803 1804
- Issue #16169: Fix ctypes.WinError()'s confusion between errno and winerror.

1805 1806 1807 1808 1809
- Issue #16076: Made _elementtree.Element pickleable in a way that is compatible
  with the Python Element. Pickling/unpickling of xml.etree.ElementTree.Element
  works again - this was a temporary regression from 3.2 where the by-default
  imported _elementtree had no pickling capability.

1810 1811 1812
- Issue #16089: Allow ElementTree.TreeBuilder to work again with a non-Element
  element_factory (fixes a regression in SimpleTAL).

1813
- Issue #16913: Fix Element.itertext()'s handling of text with XML entities.,
1814

1815 1816
- Issue #16034: Fix performance regressions in the new `bz2.BZ2File`
  implementation.  Initial patch by Serhiy Storchaka.
1817

1818 1819 1820
- Issue #16112: platform.architecture does not correctly escape argument to
  /usr/bin/file.  Patch by David Benjamin.

1821 1822 1823
- Issue #15756: `subprocess.poll()` now properly handles `errno.ECHILD` to
  return a returncode of 0 when the child has already exited or cannot be waited
  on.
1824

1825
- Issue #15323: Improve failure message of `Mock.assert_called_once_with()`.
1826

1827
- Issue #16064: ``unittest -m`` claims executable is "python", not "python3".
1828

1829
- Issue #12376: Pass on parameters in `TextTestResult.__init__()` super call.
1830

1831
- Issue #15222: Insert blank line after each message in mbox mailboxes.
1832

1833
- Issue #16013: Fix `csv.Reader` parsing issue with ending quote characters.
1834 1835
  Patch by Serhiy Storchaka.

1836 1837
- Issue #15421: Fix an OverflowError in `Calendar.itermonthdates()` after
  `datetime.MAXYEAR`.  Patch by Cédric Krier.
1838

1839
- Issue #15970: `xml.etree.ElementTree` now serializes correctly the empty HTML
1840 1841
  elements 'meta' and 'param'.

1842 1843
- Issue #15842: The `SocketIO.{readable,writable,seekable}` methods now raise
  ValueError when the file-like object is closed.  Patch by Alessandro Moura.
1844

1845
- Issue #15876: Fix a refleak in the `curses` module: window.encoding.
1846

1847 1848
- Issue #15881: Fix `atexit` hook in `multiprocessing`.  Original patch by Chris
  McDonough.
1849

1850 1851 1852
- Issue #15841: The readable(), writable() and seekable() methods of
  `io.BytesIO` and `io.StringIO` objects now raise ValueError when the object
  has been closed.  Patch by Alessandro Moura.
1853

1854 1855
- Issue #15447: Use `subprocess.DEVNULL` in webbrowser, instead of opening
  `os.devnull` explicitly and leaving it open.
1856

1857 1858
- Issue #15509: `webbrowser.UnixBrowser` no longer passes empty arguments to
  Popen when ``%action`` substitutions produce empty strings.
1859

1860 1861 1862 1863 1864
- Issue #12776, issue #11839: Call `argparse` type function (specified by
  add_argument) only once.  Before, the type function was called twice in the
  case where the default was specified and the argument was given as well.  This
  was especially problematic for the FileType type, as a default file would
  always be opened, even if a file argument was specified on the command line.
1865

1866 1867
- Issue #15906: Fix a regression in `argparse` caused by the preceding change,
  when ``action='append'``, ``type='str'`` and ``default=[]``.
1868

1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1881 1882 1883 1884 1885 1886 1887 1888 1889 1890 1891
IDLE
----

- Issue #17114: IDLE now uses non-strict config parser.

- Issue #9290: In IDLE the sys.std* streams now implement io.TextIOBase
  interface and support all mandatory methods and properties.

- Issue #16829: IDLE printing no longer fails if there are spaces or other
  special characters in the file path.

- Issue #16491: IDLE now prints chained exception tracebacks.

- Issue #16819: IDLE method completion now correctly works for bytes literals.

- Issue #16504: IDLE now catches SyntaxErrors raised by tokenizer. Patch by
  Roger Serwy.

- Issue #16511: Use default IDLE width and height if config param is not valid.
  Patch Serhiy Storchaka.

- Issue #1207589: Add Cut/Copy/Paste items to IDLE right click Context Menu
  Patch by Todd Rovito.
1892

1893 1894 1895
Tests
-----

1896 1897
- Issue #17448: test_sax now skips if there are no xml parsers available
  instead of raising an ImportError.
1898

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1899 1900
- Issue #11420: make test suite pass with -B/DONTWRITEBYTECODE set.
  Initial patch by Thomas Wouters.
1901

1902 1903
- Issue #10652: make tcl/tk tests run after __all__ test, patch by
  Zachary Ware.
1904

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Ezio Melotti committed
1905
- Issue #11963: remove human verification from test_parser and test_subprocess.
1906

1907 1908
- Issue #11732: add a new suppress_crash_popup() context manager to test.support
  that disables crash popups on Windows and use it in test_faulthandler and
1909
  test_capi.
1910

1911
- Issue #13898: test_ssl no longer prints a spurious stack trace on Ubuntu.
1912

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Ezio Melotti committed
1913
- Issue #17249: convert a test in test_capi to use unittest and reap threads.
1914

1915 1916
- Issue #17041: Fix testing when Python is configured with the
  --without-doc-strings.
1917

1918 1919
- Issue #16923: Fix ResourceWarnings in test_ssl.

1920
- Issue #15539: Added regression tests for Tools/scripts/pindent.py.
1921

1922 1923 1924
- Issue #17479: test_io now works with unittest test discovery.
  Patch by Zachary Ware.

1925 1926 1927
- Issue #17066: test_robotparser now works with unittest test discovery.
  Patch by Zachary Ware.

1928 1929
- Issue #17334: test_index now works with unittest test discovery.
  Patch by Zachary Ware.
1930

1931 1932 1933
- Issue #17333: test_imaplib now works with unittest test discovery.
  Patch by Zachary Ware.

1934 1935 1936
- Issue #17082: test_dbm* now work with unittest test discovery.
  Patch by Zachary Ware.

1937 1938 1939
- Issue #17079: test_ctypes now works with unittest test discovery.
  Patch by Zachary Ware.

1940 1941 1942
- Issue #17304: test_hash now works with unittest test discovery.
  Patch by Zachary Ware.

1943 1944 1945
- Issue #17303: test_future* now work with unittest test discovery.
  Patch by Zachary Ware.

1946 1947 1948
- Issue #17163: test_file now works with unittest test discovery.
  Patch by Zachary Ware.

1949 1950 1951
- Issue #16925: test_configparser now works with unittest test discovery.
  Patch by Zachary Ware.

1952 1953 1954
- Issue #16918: test_codecs now works with unittest test discovery.
  Patch by Zachary Ware.

1955 1956 1957
- Issue #16919: test_crypt now works with unittest test discovery.
  Patch by Zachary Ware.

1958 1959 1960
- Issue #16910: test_bytes, test_unicode, and test_userstring now work with
  unittest test discovery.  Patch by Zachary Ware.

1961 1962 1963
- Issue #16905: test_warnings now works with unittest test discovery.
  Initial patch by Berker Peksag.

1964 1965 1966
- Issue #16898: test_bufio now works with unittest test discovery.
  Patch by Zachary Ware.

1967 1968 1969
- Issue #16888: test_array now works with unittest test discovery.
  Patch by Zachary Ware.

1970 1971 1972
- Issue #16896: test_asyncore now works with unittest test discovery.
  Patch by Zachary Ware.

1973 1974 1975
- Issue #16897: test_bisect now works with unittest test discovery.
  Initial patch by Zachary Ware.

1976 1977 1978
- Issue #16852: test_genericpath, test_posixpath, test_ntpath, and test_macpath
  now work with unittest test discovery.  Patch by Zachary Ware.

1979 1980
- Issue #16748: test_heapq now works with unittest test discovery.

1981 1982
- Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize
  options.
1983

1984 1985 1986
- Issue #16702: test_urllib2_localnet tests now correctly ignores proxies for
  localhost tests.

1987 1988
- Issue #16664: Add regression tests for glob's behaviour concerning entries
  starting with a ".".  Patch by Sebastian Kreft.
1989

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1990 1991
- Issue #16559: Add more tests for the json module, including some from the
  official test suite at json.org.  Patch by Serhiy Storchaka.
1992

1993 1994 1995
- Issue #16661: Fix the `os.getgrouplist()` test by not assuming that it gives
  the same output as :command:`id -G`.

1996 1997 1998
- Issue #16115: Add some tests for the executable argument to
  subprocess.Popen().  Initial patch by Kushal Das.

1999 2000 2001
- Issue #16126: PyErr_Format format mismatch in _testcapimodule.c.
  Patch by Serhiy Storchaka.

2002 2003
- Issue #15304: Fix warning message when `os.chdir()` fails inside
  `test.support.temp_cwd()`.  Patch by Chris Jerdonek.
2004

2005 2006
- Issue #15802: Fix test logic in `TestMaildir.test_create_tmp()`. Patch by
  Serhiy Storchaka.
2007

2008 2009
- Issue #15557: Add a test suite for the `webbrowser` module, thanks to Anton
  Barkovsky.
2010

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2011 2012
- Issue #16698: Skip posix test_getgroups when built with OS X
  deployment target prior to 10.6.
2013

2014 2015 2016
Build
-----

Benjamin Peterson's avatar
Benjamin Peterson committed
2017 2018
- Issue #17550: Fix the --enable-profiling configure switch.

2019 2020
- Issue #17425: Build with openssl 1.0.1d on Windows.

2021 2022 2023
- Issue #16754: Fix the incorrect shared library extension on linux. Introduce
  two makefile macros SHLIB_SUFFIX and EXT_SUFFIX. SO now has the value of
  SHLIB_SUFFIX again (as in 2.x and 3.1). The SO macro is removed in 3.4.
2024

2025 2026
- Issue #5033: Fix building of the sqlite3 extension module when the
  SQLite library version has "beta" in it. Patch by Andreas Pelme.
2027

2028 2029
- Issue #17228: Fix building without pymalloc.

2030 2031
- Issue #3718: Use AC_ARG_VAR to set MACHDEP in configure.ac.

2032 2033
- Issue #17031: Fix running regen in cross builds.

2034
- Issue #3754: fix typo in pthread AC_CACHE_VAL.
2035

2036 2037 2038
- Issue #15484: Fix _PYTHON_PROJECT_BASE for srcdir != builddir builds;
  use _PYTHON_PROJECT_BASE in distutils/sysconfig.py.

2039
- Issue #17029: Let h2py search the multiarch system include directory.
2040

2041 2042
- Issue #16953: Fix socket module compilation on platforms with
  HAVE_BROKEN_POLL. Patch by Jeffrey Armstrong.
2043

2044
- Issue #16836: Enable IPv6 support even if IPv6 is disabled on the build host.
2045

2046 2047 2048
- Cross compiling needs host and build settings. configure no longer
  creates a broken PYTHON_FOR_BUILD variable when --build is missing.

2049 2050 2051
- Fix cross compiling issue in setup.py, ensure that lib_dirs and inc_dirs are
  defined in cross compiling mode, too.

2052
- Issue #16593: Have BSD 'make -s' do the right thing, thanks to Daniel Shahaf
2053

2054
- Issue #16262: fix out-of-src-tree builds, if mercurial is not installed.
2055

2056 2057 2058
- Issue #15298: ensure _sysconfigdata is generated in build directory, not
  source directory.

2059 2060 2061 2062
- Issue #15833: Fix a regression in 3.3 that resulted in exceptions being
  raised if importlib failed to write byte-compiled files.  This affected
  attempts to build Python out-of-tree from a read-only source directory.

2063 2064
- Issue #15923: Fix a mistake in ``asdl_c.py`` that resulted in a TypeError
  after 2801bf875a24 (see #15801).
2065

2066 2067
- Issue #15819: Make sure we can build Python out-of-tree from a read-only
  source directory.  (Somewhat related to issue #9860.)
2068

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2069 2070 2071
- Issue #15587: Enable Tk high-resolution text rendering on Macs with
  Retina displays.  Applies to Tkinter apps, such as IDLE, on OS X
  framework builds linked with Cocoa Tk 8.5.
2072

2073
- Issue #17161: make install now also installs a python3 man page.
2074

2075 2076
C-API
-----
2077

2078
- Issue #16881: Fix Py_ARRAY_LENGTH macro for GCC < 3.1.
2079

2080 2081 2082
Documentation
-------------

2083
- Issue 17538: Document XML vulnerabilties
2084

2085 2086 2087
- Issue #16642: sched.scheduler timefunc initial default is time.monotonic.
  Patch by Ramchandra Apte

2088 2089
- Issue #17047: remove doubled words in docs and docstrings
  reported by Serhiy Storchaka and Matthew Barnett.
2090

2091 2092 2093
- Issue #15465: Document the versioning macros in the C API docs rather than
  the standard library docs. Patch by Kushal Das.

2094
- Issue #16406: Combine the pages for uploading and registering to PyPI.
2095

2096 2097
- Issue #16403: Document how distutils uses the maintainer field in
  PKG-INFO. Patch by Jyrki Pulliainen.
2098

2099 2100
- Issue #16695: Document how glob handles filenames starting with a
  dot. Initial patch by Jyrki Pulliainen.
2101

2102 2103 2104
- Issue #8890: Stop advertising an insecure practice by replacing uses
  of the /tmp directory with better alternatives in the documentation.
  Patch by Geoff Wilson.
2105

2106
- Issue #17203: add long option names to unittest discovery docs.
2107

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2108 2109
- Issue #13094: add "Why do lambdas defined in a loop with different values
  all return the same result?" programming FAQ.
2110

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Brian Curtin committed
2111 2112
- Issue #14901: Update portions of the Windows FAQ.
  Patch by Ashish Nitin Patil.
2113

2114 2115 2116
- Issue #16267: Better document the 3.3+ approach to combining
  @abstractmethod with @staticmethod, @classmethod and @property

2117 2118 2119
- Issue #15209: Clarify exception chaining description in exceptions module
  documentation

2120
- Issue #15990: Improve argument/parameter documentation.
2121

2122 2123 2124
- Issue #16209: Move the documentation for the str built-in function to a new
  str class entry in the "Text Sequence Type" section.

2125 2126
- Issue #13538: Improve str() and object.__str__() documentation.

2127 2128 2129
- Issue #16489: Make it clearer that importlib.find_loader() requires any and
  all packages to be separately imported.

2130 2131
- Issue #16400: Update the description of which versions of a given package
  PyPI displays.
2132

2133 2134
- Issue #15677: Document that zlib and gzip accept a compression level of 0 to
  mean 'no compression'. Patch by Brian Brazil.
2135

2136 2137 2138
- Issue #16197: Update winreg docstrings and documentation to match code.
  Patch by Zachary Ware.

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2139 2140
- Issue #8040: added a version switcher to the documentation.  Patch by
  Yury Selivanov.
2141

2142 2143 2144
- Issue #16241: Document -X faulthandler command line option.
  Patch by Marek Šuppa.

2145 2146 2147
- Additional comments and some style changes in the concurrent.futures URL
  retrieval example

2148 2149 2150
- Issue #16115: Improve subprocess.Popen() documentation around args, shell,
  and executable arguments.

2151
- Issue #15533: Clarify docs and add tests for `subprocess.Popen()`'s cwd
2152
  argument.
2153

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2154 2155
- Issue #15979: Improve timeit documentation.

2156
- Issue #16036: Improve documentation of built-in `int()`'s signature and
2157 2158
  arguments.

2159
- Issue #15935: Clarification of `argparse` docs, re: add_argument() type and
2160 2161 2162 2163 2164
  default arguments.  Patch contributed by Chris Jerdonek.

- Issue #11964: Document a change in v3.2 to the behavior of the indent
  parameter of json encoding operations.

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2165 2166
- Issue #15116: Remove references to appscript as it is no longer being
  supported.
2167

2168 2169 2170
Tools/Demos
-----------

2171 2172 2173
- Issue #17156: pygettext.py now uses an encoding of source file and correctly
  writes and escapes non-ascii characters.

2174 2175 2176 2177
- Issue #15539: Fix a number of bugs in Tools/scripts/pindent.py.  Now
  pindent.py works with a "with" statement.  pindent.py no longer produces
  improper indentation.  pindent.py now works with continued lines broken after
  "class" or "def" keywords and with continuations at the start of line.
2178

2179
- Issue #15378: Fix Tools/unicode/comparecodecs.py.  Patch by Serhiy Storchaka.
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2180

2181 2182 2183 2184 2185 2186 2187 2188
- Issue #16476: Fix json.tool to avoid including trailing whitespace.

- Issue #16549: Make json.tool work again on Python 3 and add tests.
  Initial patch by Berker Peksag and Serhiy Storchaka.

- Issue #13301: use ast.literal_eval() instead of eval() in Tools/i18n/msgfmt.py
  Patch by Serhiy Storchaka.

2189

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2190 2191 2192
What's New in Python 3.3.0?
===========================

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2193
*Release date: 29-Sep-2012*
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2194 2195 2196 2197

Core and Builtins
-----------------

2198 2199
- Issue #16046: Fix loading sourceless legacy .pyo files.

2200 2201
- Issue #16060: Fix refcounting bug when `__trunc__()` returns an object whose
  `__int__()` gives a non-integer.  Patch by Serhiy Storchaka.
2202

2203 2204 2205
Extension Modules
-----------------

2206
- Issue #16012: Fix a regression in pyexpat. The parser's `UseForeignDTD()`
2207 2208
  method doesn't require an argument again.

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2210
What's New in Python 3.3.0 Release Candidate 3?
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2211
===============================================
2212

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2213
*Release date: 23-Sep-2012*
2214 2215 2216 2217

Core and Builtins
-----------------

2218
- Issue #15900: Fix reference leak in `PyUnicode_TranslateCharmap()`.
2219

2220 2221
- Issue #15926: Fix crash after multiple reinitializations of the interpreter.

2222
- Issue #15895: Fix FILE pointer leak in one error branch of
2223 2224
  `PyRun_SimpleFileExFlags()` when filename points to a pyc/pyo file, closeit is
  false an and set_main_loader() fails.
2225

2226 2227
- Fixes for a few crash and memory leak regressions found by Coverity.

2228 2229 2230
Library
-------

2231 2232 2233 2234
- 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).
2235

2236 2237
- Issue #15925: Fix a regression in `email.util` where the `parsedate()` and
  `parsedate_tz()` functions did not return None anymore when the argument could
2238 2239
  not be parsed.

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2240 2241 2242
Extension Modules
-----------------

2243 2244 2245
- Issue #15973: Fix a segmentation fault when comparing datetime timezone
  objects.

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2246 2247 2248
- Issue #15977: Fix memory leak in Modules/_ssl.c when the function
  _set_npn_protocols() is called multiple times, thanks to Daniel Sommermann.

2249
- Issue #15969: `faulthandler` module: rename dump_tracebacks_later() to
2250 2251 2252
  dump_traceback_later() and cancel_dump_tracebacks_later() to
  cancel_dump_traceback_later().

2253
- _decimal module: use only C 89 style comments.
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2254

2255

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2256 2257 2258
What's New in Python 3.3.0 Release Candidate 2?
===============================================

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2259
*Release date: 09-Sep-2012*
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2260 2261 2262 2263

Core and Builtins
-----------------

2264
- Issue #13992: The trashcan mechanism is now thread-safe.  This eliminates
2265 2266
  sporadic crashes in multi-thread programs when several long deallocator chains
  ran concurrently and involved subclasses of built-in container types.
2267

2268 2269
- Issue #15784: Modify `OSError`.__str__() to better distinguish between errno
  error numbers and Windows error numbers.
2270

2271 2272
- Issue #15781: Fix two small race conditions in import's module locking.

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2273 2274 2275
Library
-------

2276 2277
- Issue #15847: Fix a regression in argparse, which did not accept tuples as
  argument lists anymore.
2278

2279
- Issue #15828: Restore support for C extensions in `imp.load_module()`.
2280

2281 2282
- Issue #15340: Fix importing the random module when ``/dev/urandom`` cannot be
  opened.  This was a regression caused by the hash randomization patch.
2283

2284
- Issue #10650: Deprecate the watchexp parameter of the `Decimal.quantize()`
2285 2286
  method.

2287 2288 2289 2290
- 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.
2291

2292
- Issue #14223: Fix `window.addch()` of the curses module for special characters
2293 2294 2295 2296 2297 2298
  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.

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Build
-----

- Issue #15822: Really ensure 2to3 grammar pickles are properly installed
  (replaces fixes for Issue #15645).

2305 2306 2307
Documentation
-------------

2308 2309 2310 2311
- 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.
2312

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2313

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2314 2315 2316
What's New in Python 3.3.0 Release Candidate 1?
===============================================

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2317
*Release date: 25-Aug-2012*
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2318 2319 2320 2321

Core and Builtins
-----------------

2322
- Issue #15573: memoryview comparisons are now performed by value with full
2323
  support for any valid struct module format definition.
2324

2325
- Issue #15316: When an item in the fromlist for `__import__()` doesn't exist,
2326 2327 2328
  don't raise an error, but if an exception is raised as part of an import do
  let that propagate.

2329 2330
- Issue #15778: Ensure that ``str(ImportError(msg))`` returns a str even when
  msg isn't a str.
2331

2332 2333 2334 2335
- 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)
2336

2337
- Issue #15761: Fix crash when ``PYTHONEXECUTABLE`` is set on Mac OS X.
2338

2339 2340
- Issue #15726: Fix incorrect bounds checking in PyState_FindModule.  Patch by
  Robin Schreiber.
2341

2342
- Issue #15604: Update uses of `PyObject_IsTrue()` to check for and handle
2343 2344
  errors correctly.  Patch by Serhiy Storchaka.

2345 2346
- Issue #14846: `importlib.FileFinder` now handles the case where the directory
  being searched is removed after a previous import attempt.
2347

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Library
-------

2351 2352
- Issue #13370: Ensure that ctypes works on Mac OS X when Python is compiled
  using the clang compiler.
2353

2354 2355
- Issue #13072: The array module's 'u' format code is now deprecated and will be
  removed in Python 4.0.
2356

2357 2358
- Issue #15544: Fix Decimal.__float__ to work with payload-carrying NaNs.

2359 2360
- Issue #15776: Allow pyvenv to work in existing directory with --clean.

2361
- Issue #15249: email's BytesGenerator now correctly mangles From lines (when
2362
  requested) even if the body contains undecodable bytes.
2363

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Ross Lagerwall committed
2364
- Issue #15777: Fix a refleak in _posixsubprocess.
2365

2366
- Issue ##665194: Update `email.utils.localtime` to use datetime.astimezone and
2367 2368
  correctly handle historic changes in UTC offsets.

2369 2370
- Issue #15199: Fix JavaScript's default MIME type to application/javascript.
  Patch by Bohuslav Kabrda.
2371

2372 2373
- Issue #12643: `code.InteractiveConsole` now respects `sys.excepthook` when
  displaying exceptions.  Patch by Aaron Iles.
2374

2375
- Issue #13579: `string.Formatter` now understands the 'a' conversion specifier.
2376

2377 2378
- Issue #15595: Fix ``subprocess.Popen(universal_newlines=True)`` for certain
  locales (utf-16 and utf-32 family). Patch by Chris Jerdonek.
2379

2380 2381
- Issue #15477: In cmath and math modules, add workaround for platforms whose
  system-supplied log1p function doesn't respect signs of zeros.
2382

2383 2384
- Issue #15715: `importlib.__import__()` will silence an ImportError when the
  use of fromlist leads to a failed import.
2385

2386 2387 2388
- 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.
2389

2390
- Issue #11062: Fix adding a message from file to Babyl mailbox.
2391

2392 2393
- Issue #15646: Prevent equivalent of a fork bomb when using `multiprocessing`
  on Windows without the ``if __name__ == '__main__'`` idiom.
2394

2395 2396 2397
IDLE
----

2398 2399
- Issue #15678: Fix IDLE menus when started from OS X command line (3.3.0b2
  regression).
2400

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2401 2402
Documentation
-------------
2403

2404 2405
- Touched up the Python 2 to 3 porting guide.

2406
- Issue #14674: Add a discussion of the `json` module's standard compliance.
2407
  Patch by Chris Rebert.
2408

2409 2410
- Create a 'Concurrent Execution' section in the docs, and split up the
  'Optional Operating System Services' section to use a more user-centric
2411
  classification scheme (splitting them across the new CE section, IPC and text
2412
  processing). Operating system limitations can be reflected with the Sphinx
2413
  ``:platform:`` tag, it doesn't make sense as part of the Table of Contents.
2414

2415 2416
- Issue #4966: Bring the sequence docs up to date for the Py3k transition and
  the many language enhancements since they were original written.
2417

2418
- The "path importer" misnomer has been replaced with Eric Snow's
2419 2420
  more-awkward-but-at-least-not-wrong suggestion of "path based finder" in the
  import system reference docs.
2421

2422
- Issue #15640: Document `importlib.abc.Finder` as deprecated.
2423

2424
- Issue #15630: Add an example for "continue" stmt in the tutorial.  Patch by
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2425
  Daniel Ellis.
2426

2427 2428
Tests
-----
2429

2430
- Issue #15747: ZFS always returns EOPNOTSUPP when attempting to set the
2431 2432
  UF_IMMUTABLE flag (via either chflags or lchflags); refactor affected tests in
  test_posix.py to account for this.
2433

2434 2435
- Issue #15285: Refactor the approach for testing connect timeouts using two
  external hosts that have been configured specifically for this type of test.
2436

2437
- Issue #15743: Remove the deprecated method usage in `urllib` tests. Patch by
2438 2439
  Jeff Knupp.

2440 2441
- Issue #15615: Add some tests for the `json` module's handling of invalid input
  data.  Patch by Kushal Das.
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2443 2444 2445
Build
-----

2446 2447
- Output lib files for PGO build into PGO directory.

2448 2449
- Pick up 32-bit launcher from PGO directory on 64-bit PGO build.

2450
- Drop ``PC\python_nt.h`` as it's not used.  Add input dependency on custom
2451 2452
  build step.

2453 2454
- Issue #15511: Drop explicit dependency on pythonxy.lib from _decimal amd64
  configuration.
2455

2456 2457
- Add missing PGI/PGO configurations for pywlauncher.

2458 2459
- Issue #15645: Ensure 2to3 grammar pickles are properly installed.

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2461 2462 2463
What's New in Python 3.3.0 Beta 2?
==================================

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2464
*Release date: 12-Aug-2012*
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2466 2467 2468
Core and Builtins
-----------------

2469
- Issue #15568: Fix the return value of ``yield from`` when StopIteration is
2470 2471
  raised by a custom iterator.

2472
- Issue #13119: `sys.stdout` and `sys.stderr` are now using "\r\n" newline on
2473 2474
  Windows, as Python 2.

2475 2476
- Issue #15534: Fix the fast-search function for non-ASCII Unicode strings.

2477
- Issue #15508: Fix the docstring for `__import__()` to have the proper default
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2478 2479
  value of 0 for 'level' and to not mention negative levels since they are not
  supported.
2480

2481
- Issue #15425: Eliminated traceback noise from more situations involving
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2482
  importlib.
2483

2484 2485
- Issue #14578: Support modules registered in the Windows registry again.

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2486 2487
- Issue #15466: Stop using TYPE_INT64 in marshal, to make importlib.h (and other
  byte code files) equal between 32-bit and 64-bit systems.
2488

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Georg Brandl committed
2489
- Issue #1692335: Move initial exception args assignment to
2490
  `BaseException.__new__()` to help pickling of naive subclasses.
2491

2492
- Issue #12834: Fix `PyBuffer_ToContiguous()` for non-contiguous arrays.
2493

2494
- Issue #15456: Fix code `__sizeof__()` after #12399 change.  Patch by Serhiy
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  Storchaka.
2496

2497 2498
- Issue #15404: Refleak in PyMethodObject repr.

2499 2500
- Issue #15394: An issue in `PyModule_Create()` that caused references to be
  leaked on some error paths has been fixed.  Patch by Julia Lawall.
2501

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2502 2503
- Issue #15368: An issue that caused bytecode generation to be non-deterministic
  has been fixed.
2504

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2505 2506
- Issue #15202: Consistently use the name "follow_symlinks" for new parameters
  in os and shutil functions.
2507

2508
- Issue #15314: ``__main__.__loader__`` is now set correctly during interpreter
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2509
  startup.
2510

2511 2512 2513 2514
- Issue #15111: When a module imported using 'from import' has an ImportError
  inside itself, don't mask that fact behind a generic ImportError for the
  module itself.

2515 2516
- Issue #15293: Add GC support to the AST base node type.

2517 2518 2519
- Issue #15291: Fix a memory leak where AST nodes where not properly
  deallocated.

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2520 2521
- Issue #15110: Fix the tracebacks generated by "import xxx" to not show the
  importlib stack frames.
2522

2523
- Issue #16369: Global PyTypeObjects not initialized with PyType_Ready(...).
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2524

2525 2526 2527
- Issue #15020: The program name used to search for Python's path is now
  "python3" under Unix, not "python".

2528 2529
- Issue #15897: zipimport.c doesn't check return value of fseek().
  Patch by Felipe Cruz.
2530

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Ezio Melotti committed
2531
- Issue #15033: Fix the exit status bug when modules invoked using -m switch,
2532 2533
  return the proper failure return value (1). Patch contributed by Jeff Knupp.

2534
- Issue #15229: An `OSError` subclass whose __init__ doesn't call back
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2535 2536
  OSError.__init__ could produce incomplete instances, leading to crashes when
  calling str() on them.
2537

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2538
- Issue #15307: Virtual environments now use symlinks with framework builds on
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  Mac OS X, like other POSIX builds.
2540

2541 2542 2543
Library
-------

2544 2545 2546
- Issue #14590: configparser now correctly strips inline comments when delimiter
  occurs earlier without preceding space.

2547
- Issue #15424: Add a `__sizeof__()` implementation for array objects.  Patch by
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2548
  Ludwig Hähne.
2549

2550 2551
- Issue #15576: Allow extension modules to act as a package's __init__ module.

2552 2553
- Issue #15502: Have `importlib.invalidate_caches()` work on `sys.meta_path`
  instead of `sys.path_importer_cache`.
2554

2555 2556
- Issue #15163: Pydoc shouldn't list __loader__ as module data.

2557
- Issue #15471: Do not use mutable objects as defaults for
2558
  `importlib.__import__()`.
2559

2560
- Issue #15559: To avoid a problematic failure mode when passed to the bytes
2561 2562
  constructor, objects in the ipaddress module no longer implement `__index__()`
  (they still implement `__int__()` as appropriate).
2563

2564 2565
- Issue #15546: Fix handling of pathological input data in the peek() and
  read1() methods of the BZ2File, GzipFile and LZMAFile classes.
2566

2567 2568 2569
- Issue #12655: Instead of requiring a custom type, `os.sched_getaffinity()` and
  `os.sched_setaffinity()` now use regular sets of integers to represent the
  CPUs a process is restricted to.
2570

2571 2572
- Issue #15538: Fix compilation of the `socket.getnameinfo()` /
  `socket.getaddrinfo()` emulation code.  Patch by Philipp Hagemeister.
2573

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2574
- Issue #15519: Properly expose WindowsRegistryFinder in importlib (and use the
2575
  correct term for it).  Original patch by Eric Snow.
2576

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2577
- Issue #15502: Bring the importlib ABCs into line with the current state of the
2578
  import protocols given PEP 420.  Original patch by Eric Snow.
2579

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2580 2581
- Issue #15499: Launching a webbrowser in Unix used to sleep for a few seconds.
  Original patch by Anton Barkovsky.
2582

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2583 2584
- Issue #15463: The faulthandler module truncates strings to 500 characters,
  instead of 100, to be able to display long file paths.
2585

2586
- Issue #6056: Make `multiprocessing` use setblocking(True) on the sockets it
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2587
  uses.  Original patch by J Derek Wilson.
2588

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2589
- Issue #15364: Fix sysconfig.get_config_var('srcdir') to be an absolute path.
2590

2591
- Issue #15413: `os.times()` had disappeared under Windows.
2592

2593
- Issue #15402: An issue in the struct module that caused `sys.getsizeof()` to
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2594 2595
  return incorrect results for struct.Struct instances has been fixed.  Initial
  patch by Serhiy Storchaka.
2596

2597 2598 2599
- Issue #15232: When mangle_from is True, `email.Generator` now correctly
  mangles lines that start with 'From ' that occur in a MIME preamble or
  epilogue.
2600

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2601 2602
- Issue #15094: Incorrectly placed #endif in _tkinter.c.  Patch by Serhiy
  Storchaka.
2603

2604
- Issue #13922: `argparse` no longer incorrectly strips '--'s that appear after
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2605
  the first one.
2606

2607
- Issue #12353: `argparse` now correctly handles null argument values.
2608

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2609
- Issue #10017, issue #14998: Fix TypeError using pprint on dictionaries with
2610
  user-defined types as keys or other unorderable keys.
2611

2612 2613
- Issue #15397: `inspect.getmodulename()` is now based directly on importlib via
  a new `importlib.machinery.all_suffixes()` API.
2614

2615
- Issue #14635: `telnetlib` will use poll() rather than select() when possible to
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2616
  avoid failing due to the select() file descriptor limit.
2617

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2618
- Issue #15180: Clarify posixpath.join() error message when mixing str & bytes.
2619

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2620 2621 2622
- Issue #15343: pkgutil now includes an iter_importer_modules implementation for
  importlib.machinery.FileFinder (similar to the way it already handled
  zipimport.zipimporter).
2623

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2624
- Issue #15314: runpy now sets __main__.__loader__ correctly.
2625

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2626 2627
- Issue #15357: The import emulation in pkgutil is now deprecated. pkgutil uses
  importlib internally rather than the emulation.
2628

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2629 2630
- Issue #15233: Python now guarantees that callables registered with the atexit
  module will be called in a deterministic order.
2631

2632
- Issue #15238: `shutil.copystat()` now copies Linux "extended attributes".
2633

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2634 2635
- Issue #15230: runpy.run_path now correctly sets __package__ as described in
  the documentation.
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2636

2637 2638
- Issue #15315: Support VS 2010 in distutils cygwincompiler.

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2639 2640
- Issue #15294: Fix a regression in pkgutil.extend_path()'s handling of nested
  namespace packages.
2641

2642 2643
- Issue #15056: `imp.cache_from_source()` and `imp.source_from_cache()` raise
  NotImplementedError when `sys.implementation.cache_tag` is set to None.
2644

2645
- Issue #15256: Grammatical mistake in exception raised by `imp.find_module()`.
2646

2647
- Issue #5931: `wsgiref` environ variable SERVER_SOFTWARE will specify an
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2648
  implementation specific term like CPython, Jython instead of generic "Python".
2649

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2650 2651
- Issue #13248: Remove obsolete argument "max_buffer_size" of BufferedWriter and
  BufferedRWPair, from the io module.
2652

2653
- Issue #13248: Remove obsolete argument "version" of `argparse.ArgumentParser`.
2654

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2655 2656
- Issue #14814: Implement more consistent ordering and sorting behaviour for
  ipaddress objects.
2657

2658
- Issue #14814: `ipaddress` network objects correctly return NotImplemented when
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2659
  compared to arbitrary objects instead of raising TypeError.
2660

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2661
- Issue #14990: Correctly fail with SyntaxError on invalid encoding declaration.
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2662

2663
- Issue #14814: `ipaddress` now provides more informative error messages when
2664
  constructing instances directly (changes permitted during beta due to
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  provisional API status).
2666

2667 2668
- Issue #15247: `io.FileIO` now raises an error when given a file descriptor
  pointing to a directory.
2669

2670 2671
- Issue #15261: Stop os.stat(fd) crashing on Windows when fd not open.

2672
- Issue #15166: Implement `imp.get_tag()` using `sys.implementation.cache_tag`.
2673

2674
- Issue #15210: Catch KeyError when `importlib.__init__()` can't find
2675 2676
  _frozen_importlib in sys.modules, not ImportError.

2677
- Issue #15030: `importlib.abc.PyPycLoader` now supports the new source size
2678 2679
  header field in .pyc files.

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2680 2681
- Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox files on
  flush().
2682

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2683 2684
- Issue #10571: Fix the "--sign" option of distutils' upload command.  Patch by
  Jakub Wilk.
2685

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2686 2687 2688
- Issue #9559: If messages were only added, a new file is no longer created and
  renamed over the old file when flush() is called on an mbox, MMDF or Babyl
  mailbox.
2689

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2690
- Issue #10924: Fixed `crypt.mksalt()` to use a RNG that is suitable for
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2691
  cryptographic purpose.
2692

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2693 2694 2695 2696
- Issue #15184: Ensure consistent results of OS X configuration tailoring for
  universal builds by factoring out common OS X-specific customizations from
  sysconfig, distutils.sysconfig, distutils.util, and distutils.unixccompiler
  into a new module _osx_support.
2697

2698 2699 2700
C API
-----

2701
- Issue #15610: `PyImport_ImportModuleEx()` now uses a 'level' of 0 instead of -1.
2702

2703 2704
- Issue #15169, issue #14599: Strip out the C implementation of
  `imp.source_from_cache()` used by PyImport_ExecCodeModuleWithPathnames() and
2705 2706 2707 2708
  used the Python code instead. Leads to PyImport_ExecCodeModuleObject() to not
  try to infer the source path from the bytecode path as
  PyImport_ExecCodeModuleWithPathnames() does.

2709 2710 2711
Extension Modules
-----------------

2712 2713
- Issue #6493: An issue in ctypes on Windows that caused structure bitfields of
  type `ctypes.c_uint32` and width 32 to incorrectly be set has been fixed.
2714

2715 2716
- Issue #15194: Update libffi to the 3.0.11 release.

2717 2718 2719 2720 2721 2722
IDLE
----

- Issue #13052: Fix IDLE crashing when replace string in Search/Replace dialog
  ended with ``\``.  Patch by Roger Serwy.

2723 2724 2725
Tools/Demos
-----------

Georg Brandl's avatar
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2726 2727
- Issue #15458: python-config gets a new option --configdir to print the $LIBPL
  value.
2728

2729 2730
- Move importlib.test.benchmark to Tools/importbench.

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2731 2732 2733
- Issue #12605: The gdb hooks for debugging CPython (within Tools/gdb) have been
  enhanced to show information on more C frames relevant to CPython within the
  "py-bt" and "py-bt-full" commands:
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  * C frames that are waiting on the GIL
  * C frames that are garbage-collecting
  * C frames that are due to the invocation of a PyCFunction
2738

2739 2740 2741
Documentation
-------------

2742 2743
- Issue #15041: Update "see also" list in tkinter documentation.

2744 2745
- Issue #15444: Use proper spelling for non-ASCII contributor names.  Patch by
  Serhiy Storchaka.
2746

2747
- Issue #15295: Reorganize and rewrite the documentation on the import system.
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Barry Warsaw committed
2748

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2749 2750
- Issue #15230: Clearly document some of the limitations of the runpy module and
  nudge readers towards importlib when appropriate.
2751

2752 2753 2754
- Issue #15053: Copy Python 3.3 import lock change notice to all relevant
  functions in imp instead of just at the top of the relevant section.

2755 2756 2757 2758 2759
- Issue #15288: Link to the term "loader" in notes in pkgutil about how things
  won't work as expected in Python 3.3 and mark the requisite functions as
  "changed" since they will no longer work with modules directly imported by
  import itself.

2760 2761
- Issue #13557: Clarify effect of giving two different namespaces to `exec()` or
  `execfile()`.
2762

2763
- Issue #15250: Document that `filecmp.dircmp()` compares files shallowly. Patch
2764
  contributed by Chris Jerdonek.
2765

2766 2767 2768
Tests
-----

2769 2770
- Issue #15467: Move helpers for `__sizeof__()` tests into test_support.  Patch
  by Serhiy Storchaka.
2771

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2772 2773
- Issue #15320: Make iterating the list of tests thread-safe when running tests
  in multiprocess mode. Patch by Chris Jerdonek.
2774

2775
- Issue #15168: Move `importlib.test` to `test.test_importlib`.
2776

2777
- Issue #15091: Reactivate a test on UNIX which was failing thanks to a
2778
  forgotten `importlib.invalidate_caches()` call.
2779 2780

- Issue #15230: Adopted a more systematic approach in the runpy tests.
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2781

2782 2783 2784 2785
- 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.

2786 2787 2788
- Issue #15284: Skip {send,recv}msg tests in test_socket when IPv6 is not
  enabled. Patch by Brian Brazil.

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2789 2790
- Issue #15277: Fix a resource leak in support.py when IPv6 is disabled.  Patch
  by Brian Brazil.
2791

2792 2793 2794
Build
-----

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2795 2796
- Issue #11715: Fix multiarch detection without having Debian development tools
  (dpkg-dev) installed.
2797

2798 2799 2800 2801
- 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.

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- 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.
2806

2807
- Issue #8847: Disable COMDAT folding in Windows PGO builds.
2808

2809 2810
- Issue #14018: Fix OS X Tcl/Tk framework checking when using OS X SDKs.

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2811
- Issue #16256: OS X installer now sets correct permissions for doc directory.
2812

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2813 2814
- Issue #15431: Add _freeze_importlib project to regenerate importlib.h on
  Windows. Patch by Kristján Valur Jónsson.
2815

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2816 2817
- Issue #14197: For OS X framework builds, ensure links to the shared library
  are created with the proper ABI suffix.
2818

2819 2820 2821
- Issue #14330: For cross builds, don't use host python, use host search paths
  for host compiler.

2822 2823
- Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module.

2824 2825
- Issue #15268: Search curses.h in /usr/include/ncursesw.

2826

2827
What's New in Python 3.3.0 Beta 1?
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2828
==================================
2829

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2830
*Release date: 27-Jun-2012*
2831

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Core and Builtins
-----------------

2835 2836 2837
- Fix a (most likely) very rare memory leak when calling main() and not being
  able to decode a command-line argument.

2838 2839 2840
- Issue #14815: Use Py_ssize_t instead of long for the object hash, to
  preserve all 64 bits of hash on Win64.

2841 2842 2843 2844 2845
- 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.

2846 2847
- Issue #11626: Add _SizeT functions to stable ABI.

2848 2849 2850
- Issue #15142: Fix reference leak when deallocating instances of types
  created using PyType_FromSpec().

2851 2852 2853
- Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on
  the work by Hirokazu Yamamoto.

2854 2855 2856
- Issue #15096: Removed support for ur'' as the raw notation isn't
  compatible with Python 2.x's raw unicode strings.

2857 2858
- Issue #13783: Generator objects now use the identifier APIs internally

2859 2860 2861
- Issue #14874: Restore charmap decoding speed to pre-PEP 393 levels.
  Patch by Serhiy Storchaka.

2862 2863 2864
- Issue #15026: utf-16 encoding is now significantly faster (up to 10x).
  Patch by Serhiy Storchaka.

2865 2866 2867 2868 2869 2870
- 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.

Barry Warsaw's avatar
Barry Warsaw committed
2871 2872
- Issue #14673: Add Eric Snow's sys.implementation implementation.

2873 2874
- Issue #15038: Optimize python Locks on Windows.

2875 2876 2877
Library
-------

2878 2879
- Issue #16305: Fix a segmentation fault occurring when interrupting
  math.factorial.
2880

2881 2882
- Issue #12288: Consider '0' and '0.0' as valid initialvalue
  for tkinter SimpleDialog.
2883

2884 2885
- Issue #15512: Add a __sizeof__ implementation for parser.
  Patch by Serhiy Storchaka.
2886

2887 2888
- Issue #15469: Add a __sizeof__ implementation for deque objects.
  Patch by Serhiy Storchaka.
R David Murray's avatar
R David Murray committed
2889

2890 2891
- Issue #15489: Add a __sizeof__ implementation for BytesIO objects.
  Patch by Serhiy Storchaka.
2892

2893 2894
- Issue #15487: Add a __sizeof__ implementation for buffered I/O objects.
  Patch by Serhiy Storchaka.
2895

2896 2897 2898
- Issue #15514: Correct __sizeof__ support for cpu_set.
  Patch by Serhiy Storchaka.

2899 2900
- Issue #15177: Added dir_fd parameter to os.fwalk().

2901 2902 2903 2904
- 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.

2905 2906
- Issue #15164: Change return value of platform.uname() from a
  plain tuple to a collections.namedtuple.
2907

2908 2909 2910 2911
- Support Mageia Linux in the platform module.

- Issue #11678: Support Arch linux in the platform module.

2912 2913 2914 2915
- Issue #15118: Change return value of os.uname() and os.times() from
  plain tuples to immutable iterable objects with named attributes
  (structseq objects).

2916 2917 2918 2919
- 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.

2920 2921
- Remove the packaging module, which is not ready for prime time.

2922 2923 2924
- Issue #15154: Add "dir_fd" parameter to os.rmdir, remove "rmdir"
  parameter from os.remove / os.unlink.

Hynek Schlawack's avatar
Hynek Schlawack committed
2925
- Issue #4489: Add a shutil.rmtree that isn't susceptible to symlink attacks.
2926 2927 2928
  It is used automatically on platforms supporting the necessary os.openat()
  and os.unlinkat() functions. Main code by Martin von Löwis.

2929 2930
- Issue #15156: HTMLParser now uses the new "html.entities.html5" dictionary.

2931 2932 2933 2934
- 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.

2935 2936 2937
- Issue #15114: the strict mode of HTMLParser and the HTMLParseError exception
  are deprecated now that the parser is able to parse invalid markup.

2938 2939 2940
- Issue #3665: \u and \U escapes are now supported in unicode regular
  expressions.  Patch by Serhiy Storchaka.

2941 2942 2943
- Issue #15153: Added inspect.getgeneratorlocals to simplify white box
  testing of generator state updates

2944 2945 2946 2947
- Issue #13062: Added inspect.getclosurevars to simplify testing stateful
  closures

- Issue #11024: Fixes and additional tests for Time2Internaldate.
2948

2949 2950
- Issue #14626: Large refactoring of functions / parameters in the os module.
  Many functions now support "dir_fd" and "follow_symlinks" parameters;
2951
  some also support accepting an open file descriptor in place of a path
2952 2953 2954 2955 2956
  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.

2957 2958 2959
- Issue #15008: Implement PEP 362 "Signature Objects".
  Patch by Yury Selivanov.

2960 2961
- Issue: #15138: base64.urlsafe_{en,de}code() are now 3-4x faster.

2962 2963 2964 2965
- 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.

2966 2967 2968 2969
- 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.

2970 2971 2972
- Issue #9527: datetime.astimezone() method will now supply a class
  timezone instance corresponding to the system local timezone when
  called with no arguments.
2973

2974 2975
- Issue #14653: email.utils.mktime_tz() no longer relies on system
  mktime() when timezone offest is supplied.
2976

2977 2978 2979
- Issue #14684: zlib.compressobj() and zlib.decompressobj() now support the use
  of predefined compression dictionaries. Original patch by Sam Rushing.

2980
- Fix GzipFile's handling of filenames given as bytes objects.
2981

2982 2983
- Issue #14772: Return destination values from some shutil functions.

2984 2985
- Issue #15064: Implement context manager protocol for multiprocessing types

2986
- Issue #15101: Make pool finalizer avoid joining current thread.
2987

2988 2989 2990
- Issue #14657: The frozen instance of importlib used for bootstrap is now
  also the module imported as importlib._bootstrap.

2991 2992
- Issue #14055: Add __sizeof__ support to _elementtree.

2993 2994 2995 2996
- 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.

2997 2998
- Issue #15006: Allow equality comparison between naive and aware
  time or datetime objects.
2999

Petri Lehtinen's avatar
Petri Lehtinen committed
3000 3001 3002
- 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.
3003

3004 3005
- Issue #14059: Implement multiprocessing.Barrier.

3006
- Issue #15061: The inappropriately named hmac.secure_compare has been
Nick Coghlan's avatar
Nick Coghlan committed
3007 3008
  renamed to hmac.compare_digest, restricted to operating on bytes inputs
  only and had its documentation updated to more accurately reflect both its
3009 3010
  intent and its limitations

3011 3012
- Issue #13841: Make child processes exit using sys.exit() on Windows.

3013
- Issue #14936: curses_panel was converted to PEP 3121 and PEP 384 API.
3014 3015
  Patch by Robin Schreiber.

3016 3017 3018 3019 3020
- 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.

3021 3022
- Rename adjusted attribute to adjustable in time.get_clock_info() result.

3023 3024 3025
- Issue #3518: Remove references to non-existent BaseManager.from_address()
  method.

3026 3027 3028
- Issue #13857: Added textwrap.indent() function (initial patch by Ezra
  Berch)

3029 3030
- Issue #2736: Added datetime.timestamp() method.

3031 3032
- Issue #13854: Make multiprocessing properly handle non-integer
  non-string argument to SystemExit.
3033

3034 3035
- Issue #12157: Make pool.map() empty iterables correctly.  Initial
  patch by mouad.
3036

3037 3038
- Issue #11823: disassembly now shows argument counts on calls with keyword args.

3039 3040
- Issue #14711: os.stat_float_times() has been deprecated.

3041 3042
- LZMAFile now accepts the modes "rb"/"wb"/"ab" as synonyms of "r"/"w"/"a".

3043 3044
- 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.
3045

3046 3047
- BZ2File.__init__() and LZMAFile.__init__() now accept a file object as their
  first argument, rather than requiring a separate "fileobj" argument.
3048

3049 3050
- gzip.open() now accepts file objects as well as filenames.

3051 3052 3053 3054 3055
- 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.

3056 3057 3058
- Issue #14989: Make the CGI enable option to http.server available via command
  line.

3059 3060
- Issue #14987: Add a missing import statement to inspect.

3061 3062 3063 3064
- 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.

3065 3066
- Issue #14969: Better handling of exception chaining in contextlib.ExitStack

3067 3068 3069
- Issue #14963: Convert contextlib.ExitStack.__exit__ to use an iterative
  algorithm (Patch by Alon Horev)

3070 3071 3072
- Issue #14785: Add sys._debugmallocstats() to help debug low-level memory
  allocation issues

3073 3074 3075
- Issue #14443: Ensure that .py files are byte-compiled with the correct Python
  executable within bdist_rpm even on older versions of RPM

3076 3077 3078
C-API
-----

3079 3080 3081 3082 3083
- Issue #15146: Add PyType_FromSpecWithBases. Patch by Robin Schreiber.

- Issue #15042: Add PyState_AddModule and PyState_RemoveModule. Add version
  guard for Py_LIMITED_API additions. Patch by Robin Schreiber.

3084 3085 3086
- Issue #13783: Inadvertent additions to the public C API in the PEP 380
  implementation have either been removed or marked as private interfaces.

3087 3088
Extension Modules
-----------------
3089

3090
- Issue #15000: Support the "unique" x32 architecture in _posixsubprocess.c.
3091

3092 3093 3094 3095 3096 3097 3098 3099 3100
IDLE
----

- Issue #9803: Don't close IDLE on saving if breakpoint is open.
  Patch by Roger Serwy.

- Issue #14962: Update text coloring in IDLE shell window after changing
  options.  Patch by Roger Serwy.

3101 3102 3103
Documentation
-------------

3104 3105 3106 3107 3108 3109 3110
- Issue #15176: Clarified behavior, documentation, and implementation
  of os.listdir().

- Issue #14982: Document that pkgutil's iteration functions require the
  non-standard iter_modules() method to be defined by an importer (something
  the importlib importers do not define).

3111 3112 3113
- Issue #15081: Document PyState_FindModule.
  Patch by Robin Schreiber.

3114 3115
- Issue #14814: Added first draft of ipaddress module API reference

3116 3117 3118
Tests
-----

3119 3120 3121
- Issue #15187: Bugfix: remove temporary directories test_shutil was leaving
  behind.

3122 3123 3124 3125
- 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".

3126 3127 3128
- test_nntplib now tolerates being run from behind NNTP gateways that add
  "X-Antivirus" headers to articles

3129 3130 3131 3132
- Issue #15043: test_gdb is now skipped entirely if gdb security settings
  block loading of the gdb hooks

- Issue #14963: Add test cases for exception handling behaviour
3133
  in contextlib.ExitStack (Initial patch by Alon Horev)
3134

3135 3136 3137
Build
-----

3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152
- 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.

3153 3154
- Issue #14225: Fix Unicode support for curses (#12567) on OS X

3155 3156 3157
- Issue #14928: Fix importlib bootstrap issues by using a custom executable
  (Modules/_freeze_importlib) to build Python/importlib.h.

Georg Brandl's avatar
Georg Brandl committed
3158

3159 3160 3161
What's New in Python 3.3.0 Alpha 4?
===================================

Georg Brandl's avatar
Georg Brandl committed
3162
*Release date: 31-May-2012*
3163 3164 3165 3166

Core and Builtins
-----------------

3167 3168 3169
- Issue #14835: Make plistlib output empty arrays & dicts like OS X.
  Patch by Sidney San Martín.

3170 3171 3172
- Issue #14744: Use the new _PyUnicodeWriter internal API to speed up
  str%args and str.format(args).

3173 3174
- Issue #14930: Make memoryview objects weakrefable.

3175 3176 3177
- Issue #14775: Fix a potential quadratic dict build-up due to the garbage
  collector repeatedly trying to untrack dicts.

3178 3179 3180
- Issue #14857: fix regression in references to PEP 3135 implicit __class__
  closure variable (Reopens issue #12370)

Vinay Sajip's avatar
Vinay Sajip committed
3181 3182
- Issue #14712 (PEP 405): Virtual environments. Implemented by Vinay Sajip.

3183 3184
- Issue #14660 (PEP 420): Namespace packages. Implemented by Eric Smith.

3185 3186 3187 3188
- 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.

3189 3190 3191 3192
- 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.

3193 3194 3195
- Issue #14624: UTF-16 decoding is now 3x to 4x faster on various inputs.
  Patch by Serhiy Storchaka.

Martin v. Löwis's avatar
Martin v. Löwis committed
3196 3197
- asdl_seq and asdl_int_seq are now Py_ssize_t sized.

3198 3199 3200
- Issue #14133 (PEP 415): Implement suppression of __context__ display with an
  attribute on BaseException. This replaces the original mechanism of PEP 409.

3201 3202 3203
- Issue #14417: Mutating a dict during lookup now restarts the lookup instead
  of raising a RuntimeError (undoes issue #14205).

3204 3205 3206
- Issue #14738: Speed-up UTF-8 decoding on non-ASCII data.  Patch by Serhiy
  Storchaka.

3207 3208 3209
- Issue #14700: Fix two broken and undefined-behaviour-inducing overflow checks
  in old-style string formatting.

3210 3211 3212
Library
-------

3213 3214 3215
- Issue #14690: Use monotonic clock instead of system clock in the sched,
  subprocess and trace modules.

3216 3217 3218
- Issue #14443: Tell rpmbuild to use the correct version of Python in
  bdist_rpm. Initial patch by Ross Lagerwall.

3219 3220 3221 3222 3223 3224 3225
- Issue #12515: email now registers a defect if it gets to EOF while parsing
  a MIME part without seeing the closing MIME boundary.

- Issue #1672568: email now always decodes base64 payloads, adding padding and
  ignoring non-base64-alphabet characters if needed, and registering defects
  for any such problems.

3226 3227 3228 3229
- 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.

3230 3231
- Issue #10365: File open dialog now works instead of crashing even when
  the parent window is closed before the dialog. Patch by Roger Serwy.
3232

3233 3234 3235
- Issue #8739: Updated smtpd to support RFC 5321, and added support for the
  RFC 1870 SIZE extension.

3236 3237 3238
- Issue #665194: Added a localtime function to email.utils to provide an
  aware local datetime for use in setting Date headers.

3239 3240 3241 3242 3243 3244 3245 3246
- Issue #12586: Added new provisional policies that implement convenient
  unicode support for email headers.  See What's New for details.

- Issue #14731: Refactored email Policy framework to support full backward
  compatibility with Python 3.2 by default yet allow for the introduction of
  new features through new policies.  Note that Policy.must_be_7bit is renamed
  to cte_type.

3247 3248
- Issue #14876: Use user-selected font for highlight configuration.

3249 3250 3251
- Issue #14920: Fix the help(urllib.parse) failure on locale C on terminals.
  Have ascii characters in help.

3252 3253 3254
- Issue #14548: Make multiprocessing finalizers check pid before
  running to cope with possibility of gc running just after fork.

3255 3256 3257
- Issue #14036: Add an additional check to validate that port in urlparse does
  not go in illegal range and returns None.

3258 3259
- Issue #14862: Add missing names to os.__all__

3260 3261
- Issue #14875: Use float('inf') instead of float('1e66666') in the json module.

3262 3263
- Issue #13585: Added contextlib.ExitStack

3264 3265
- PEP 3144, Issue #14814: Added the ipaddress module

Senthil Kumaran's avatar
Senthil Kumaran committed
3266 3267 3268
- Issue #14426: Correct the Date format in Expires attribute of Set-Cookie
  Header in Cookie.py.

3269 3270 3271 3272
- 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.

3273 3274 3275
- Issue #13152: Allow to specify a custom tabsize for expanding tabs in
  textwrap. Patch by John Feuerstein.

3276 3277 3278
- Issue #14721: Send the correct 'Content-length: 0' header when the body is an
  empty string ''. Initial Patch contributed by Arve Knudsen.

3279 3280 3281
- Issue #14072: Fix parsing of 'tel' URIs in urlparse by making the check for
  ports stricter.

3282 3283 3284
- Issue #9374: Generic parsing of query and fragment portions of url for any
  scheme. Supported both by RFC3986 and RFC2396.

3285 3286 3287 3288
- 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.

3289 3290 3291 3292
- Issue #12098: multiprocessing on Windows now starts child processes
  using the same sys.flags as the current process.  Initial patch by
  Sergey Mezentsev.

3293 3294 3295
- Issue #13031: Small speed-up for tarfile when unzipping tarfiles.
  Patch by Justin Peel.

3296 3297 3298
- Issue #14780: urllib.request.urlopen() now has a ``cadefault`` argument
  to use the default certificate store.  Initial patch by James Oakley.

3299 3300 3301
- Issue #14829: Fix bisect and range() indexing with large indices
  (>= 2 ** 32) under 64-bit Windows.

3302 3303 3304
- Issue #14732: The _csv module now uses PEP 3121 module initialization.
  Patch by Robin Schreiber.

3305 3306 3307
- Issue #14809: Add HTTP status codes introduced by RFC 6585 to http.server
  and http.client. Patch by EungJun Yi.

Ned Deily's avatar
Ned Deily committed
3308 3309 3310 3311 3312
- 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.
3313

3314
- Issue #14773: Fix os.fwalk() failing on dangling symlinks.
3315

3316 3317 3318
- Issue #12541: Be lenient with quotes around Realm field of HTTP Basic
  Authentation in urllib2.

3319
- Issue #14807: move undocumented tarfile.filemode() to stat.filemode() and add
3320 3321
  doc entry. Add tarfile.filemode alias with deprecation warning.

3322 3323
- Issue #13815: TarFile.extractfile() now returns io.BufferedReader objects.

3324
- Issue #14532: Add a secure_compare() helper to the hmac module, to mitigate
3325
  timing attacks. Patch by Jon Oberheide.
3326

3327 3328
- Add importlib.util.resolve_name().

3329 3330 3331
- Issue #14366: Support lzma compression in zip files.
  Patch by Serhiy Storchaka.

3332 3333
- Issue #13959: Introduce importlib.find_loader() and document
  imp.find_module/load_module as deprecated.
3334

3335 3336 3337
- Issue #14082: shutil.copy2() now copies extended attributes, if possible.
  Patch by Hynek Schlawack.

Brett Cannon's avatar
Brett Cannon committed
3338 3339 3340 3341 3342
- 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().

3343 3344 3345 3346 3347
- 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().

3348 3349 3350
- Issue #14662: Prevent shutil failures on OS X when destination does not
  support chflag operations.  Patch by Hynek Schlawack.

3351 3352 3353
- Issue #14157: Fix time.strptime failing without a year on February 29th.
  Patch by Hynek Schlawack.

3354 3355 3356
- Issue #14753: Make multiprocessing's handling of negative timeouts
  the same as it was in Python 3.2.

3357 3358 3359
- Issue #14583: Fix importlib bug when a package's __init__.py would first
  import one of its modules then raise an error.

3360 3361
- Issue #14741: Fix missing support for Ellipsis ('...') in parser module.

3362 3363 3364
- Issue #14697: Fix missing support for set displays and set comprehensions in
  parser module.

3365 3366
- Issue #14701: Fix missing support for 'raise ... from' in parser module.

3367 3368 3369
- Add support for timeouts to the acquire() methods of
  multiprocessing's lock/semaphore/condition proxies.

3370 3371
- Issue #13989: Add support for text mode to gzip.open().

3372
- Issue #14127: The os.stat() result object now provides three additional
Georg Brandl's avatar
Georg Brandl committed
3373 3374 3375 3376
  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.
3377

Georg Brandl's avatar
Georg Brandl committed
3378 3379
- Issue #14127 and #10148: shutil.copystat now preserves exact mtime and atime
  on filesystems providing nanosecond resolution.
3380

3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395
IDLE
----

- Issue #14958: Change IDLE systax highlighting to recognize all string and
  byte literals supported in Python 3.3.

- Issue #10997: Prevent a duplicate entry in IDLE's "Recent Files" menu.

- Issue #14929: Stop IDLE 3.x from closing on Unicode decode errors when
  grepping. Patch by Roger Serwy.

- Issue #12510: Attempting to get invalid tooltip no longer closes IDLE.
  Other tooltipss have been corrected or improved and the number of tests
  has been tripled. Original patch by Roger Serwy.

3396 3397 3398
Tools/Demos
-----------

3399
- Issue #14695: Bring Tools/parser/unparse.py support up to date with
3400 3401
  the Python 3.3 Grammar.

3402 3403 3404
Build
-----

Petri Lehtinen's avatar
Petri Lehtinen committed
3405 3406
- Issue #14472: Update .gitignore. Patch by Matej Cepl.

Martin v. Löwis's avatar
Martin v. Löwis committed
3407 3408
- Upgrade Windows library versions: bzip 1.0.6, OpenSSL 1.0.1c.

3409 3410 3411
- Issue #14693: Under non-Windows platforms, hashlib's fallback modules are
  always compiled, even if OpenSSL is present at build time.

3412 3413
- Issue #13210: Windows build now uses VS2010, ported from VS2008.

3414 3415 3416 3417 3418 3419 3420
C-API
-----

- Issue #14705: The PyArg_Parse() family of functions now support the 'p' format
  unit, which accepts a "boolean predicate" argument.  It converts any Python
  value into an integer--0 if it is "false", and 1 otherwise.

3421 3422 3423
Documentation
-------------

3424 3425 3426
- Issue #14863: Update the documentation of os.fdopen() to reflect the
  fact that it's only a thin wrapper around open() anymore.

3427 3428 3429
- Issue #14588: The language reference now accurately documents the Python 3
  class definition process. Patch by Nick Coghlan.

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3430 3431
- Issue #14943: Correct a default argument value for winreg.OpenKey
  and correctly list the argument names in the function's explanation.
3432

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3433

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3434 3435 3436
What's New in Python 3.3.0 Alpha 3?
===================================

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3437
*Release date: 01-May-2012*
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3438 3439 3440 3441

Core and Builtins
-----------------

3442 3443
- Issue #14699: Fix calling the classmethod descriptor directly.

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3444
- Issue #14433: Prevent msvcrt crash in interactive prompt when stdin is closed.
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3445

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3446 3447
- Issue #14521: Make result of float('nan') and float('-nan') more consistent
  across platforms.
3448

3449 3450
- Issue #14646: __import__() sets __loader__ if the loader did not.

3451 3452 3453
- Issue #14605: No longer have implicit entries in sys.meta_path. If
  sys.meta_path is found to be empty, raise ImportWarning.

3454
- Issue #14605: No longer have implicit entries in sys.path_hooks. If
3455 3456 3457
  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.
3458

3459 3460 3461 3462
- 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.

3463 3464 3465 3466 3467 3468
- Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError
  when repr() or str() is called on such an object.

- Issue #14658: Fix binding a special method to a builtin implementation of a
  special method with a different name.

3469 3470 3471
- Issue #14630: Fix a memory access bug for instances of a subclass of int
  with value 0.

3472 3473 3474
- Issue #14339: Speed improvements to bin, oct and hex functions.  Patch by
  Serhiy Storchaka.

3475 3476 3477 3478 3479
- 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__.

3480 3481 3482 3483
- Issue #12599: Be more strict in accepting None compared to a false-like
  object for importlib.util.module_for_loader and
  importlib.machinery.PathFinder.

3484 3485
- Issue #14612: Fix jumping around with blocks by setting f_lineno.

3486 3487 3488
- Issue #14592: Attempting a relative import w/o __package__ or __name__ set in
  globals raises a KeyError.

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3489
- Issue #14607: Fix keyword-only arguments which started with ``__``.
3490

3491 3492 3493 3494
- 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.

3495 3496 3497 3498
- 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.

3499 3500 3501
- __import__() now matches PEP 328 and documentation by defaulting 'index' to 0
  instead of -1 and removing support for negative values.

3502 3503
- Issue #2377: Make importlib the implementation of __import__().

3504 3505 3506 3507
- 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.

3508 3509 3510
- Issue #14474: Save and restore exception state in thread.start_new_thread()
  while writing error message if the thread leaves a unhandled exception.

3511 3512 3513
- Issue #13019: Fix potential reference leaks in bytearray.extend().  Patch
  by Suman Saha.

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3514 3515 3516
Library
-------

3517
- Issue #14768: os.path.expanduser('~/a') doesn't works correctly when HOME is '/'.
3518

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3519
- Issue #14371: Support bzip2 in zipfile module.  Patch by Serhiy Storchaka.
3520

3521 3522 3523
- Issue #13183: Fix pdb skipping frames after hitting a breakpoint and running
  step.  Patch by Xavier de Gaye.

3524 3525
- Issue #14696: Fix parser module to understand 'nonlocal' declarations.

3526 3527 3528
- Issue #10941: Fix imaplib.Internaldate2tuple to produce correct result near
  the DST transition.  Patch by Joe Peterson.

3529
- Issue #9154: Fix parser module to understand function annotations.
3530

3531 3532 3533
- Issue #6085: In http.server.py SimpleHTTPServer.address_string returns the
  client ip address instead client hostname. Patch by Charles-François Natali.

3534 3535 3536
- Issue #14309: Deprecate time.clock(), use time.perf_counter() or
  time.process_time() instead.

3537 3538 3539 3540
- 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().

3541 3542 3543
- Issue #14646: importlib.util.module_for_loader() now sets __loader__ and
  __package__ (when possible).

3544 3545 3546
- 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).

3547 3548 3549
- Issue #4892: multiprocessing Connections can now be transferred over
  multiprocessing Connections.  Patch by Richard Oudkerk (sbt).

3550 3551 3552
- Issue #14160: TarFile.extractfile() failed to resolve symbolic links when
  the links were not located in an archive subdirectory.

3553 3554 3555
- Issue #14638: pydoc now treats non-string __name__ values as if they
  were missing, instead of raising an error.

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3556 3557 3558
- Issue #13684: Fix httplib tunnel issue of infinite loops for certain sites
  which send EOF without trailing \r\n.

3559
- Issue #14605: Add importlib.abc.FileLoader, importlib.machinery.(FileFinder,
3560
  SourceFileLoader, SourcelessFileLoader, ExtensionFileLoader).
3561

3562 3563 3564 3565 3566
- 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.

3567 3568
- Issue #2193: Allow ":" character in Cookie NAME values.

3569 3570 3571
- Issue #14629: tokenizer.detect_encoding will specify the filename in the
  SyntaxError exception if found at readline.__self__.name.

3572 3573 3574
- Issue #14629: Raise SyntaxError in tokenizer.detect_encoding if the
  first two lines have non-UTF-8 characters without an encoding declaration.

3575 3576 3577
- Issue #14308: Fix an exception when a "dummy" thread is in the threading
  module's active list after a fork().

3578 3579 3580 3581
- Issue #11750: The Windows API functions scattered in the _subprocess and
  _multiprocessing.win32 modules now live in a single module "_winapi".
  Patch by sbt.

3582 3583
- Issue #14087: multiprocessing: add Condition.wait_for(). Patch by sbt.

3584 3585 3586
- Issue #14538: HTMLParser can now parse correctly start tags that contain
  a bare '/'.

3587 3588
- Issue #14452: SysLogHandler no longer inserts a UTF-8 BOM into the message.

3589 3590
- Issue #14386: Expose the dict_proxy internal type as types.MappingProxyType.

3591 3592 3593
- Issue #13959: Make imp.reload() always use a module's __loader__ to perform
  the reload.

3594 3595 3596
- Issue #13959: Add imp.py and rename the built-in module to _imp, allowing for
  re-implementing parts of the module in pure Python.

3597 3598 3599
- Issue #13496: Fix potential overflow in bisect.bisect algorithm when applied
  to a collection of size > sys.maxsize / 2.

3600 3601 3602
- Have importlib take advantage of ImportError's new 'name' and 'path'
  attributes.

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3603 3604
- 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
3605
  trying to set a non-binary value as a comment is now raised at the time
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3606
  the comment is set rather than at the time the zipfile is written.
3607

3608 3609 3610 3611
- trace.CoverageResults.is_ignored_filename() now ignores any name that starts
  with "<" and ends with ">" instead of special-casing "<string>" and
  "<doctest ".

3612 3613 3614
- Issue #12537: The mailbox module no longer depends on knowledge of internal
  implementation details of the email package Message object.

3615 3616 3617 3618
- Issue #7978: socketserver now restarts the select() call when EINTR is
  returned.  This avoids crashing the server loop when a signal is received.
  Patch by Jerzy Kozera.

3619 3620 3621
- Issue #14522: Avoid duplicating socket handles in multiprocessing.connection.
  Patch by sbt.

3622 3623
- Don't Py_DECREF NULL variable in io.IncrementalNewlineDecoder.

3624 3625
- Issue #3033: Add displayof parameter to tkinter font. Patch by Guilherme Polo.

3626 3627 3628 3629
- Issue #14482: Raise a ValueError, not a NameError, when trying to create
  a multiprocessing Client or Listener with an AF_UNIX type address under
  Windows.  Patch by Popa Claudiu.

3630 3631
- Issue #802310: Generate always unique tkinter font names if not directly passed.

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3632 3633 3634 3635
- Issue #14151: Raise a ValueError, not a NameError, when trying to create
  a multiprocessing Client or Listener with an AF_PIPE type address under
  non-Windows platforms.  Patch by Popa Claudiu.

3636
- Issue #14493: Use gvfs-open or xdg-open in webbrowser.
3637

3638 3639 3640 3641 3642 3643
Build
-----

- "make touch" will now touch generated files that are checked into Mercurial,
  after a "hg update" which failed to bring the timestamps into the right order.

3644 3645 3646
Tests
-----

3647 3648 3649
- Issue #14026: In test_cmd_line_script, check that sys.argv is populated
  correctly for the various invocation approaches (Patch by Jason Yeo)

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3650 3651 3652
- Issue #14032: Fix incorrect variable name in test_cmd_line_script debugging
  message (Patch by Jason Yeo)

3653 3654 3655
- Issue #14589: Update certificate chain for sha256.tbs-internet.com, fixing
  a test failure in test_ssl.

3656 3657 3658
- Issue #14355: Regrtest now supports the standard unittest test loading, and
  will use it if a test file contains no `test_main` method.

3659 3660 3661 3662 3663 3664 3665 3666 3667
IDLE
----

- Issue #8515: Set __file__ when run file in IDLE.
  Initial patch by Bruce Frederiksen.

- Issue #14496: Fix wrong name in idlelib/tabbedpages.py.
  Patch by Popa Claudiu.

3668 3669 3670
Tools / Demos
-------------

3671 3672 3673
- Issue #3561: The Windows installer now has an option, off by default, for
  placing the Python installation into the system "Path" environment variable.

3674 3675 3676
- Issue #13165: stringbench is now available in the Tools/stringbench folder.
  It used to live in its own SVN project.

3677 3678 3679 3680 3681 3682
C-API
-----

- Issue #14098: New functions PyErr_GetExcInfo and PyErr_SetExcInfo.
  Patch by Stefan Behnel.

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3683

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What's New in Python 3.3.0 Alpha 2?
===================================

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3687
*Release date: 01-Apr-2012*
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3688 3689 3690 3691

Core and Builtins
-----------------

3692 3693 3694
- Issue #1683368: object.__new__ and object.__init__ raise a TypeError if they
  are passed arguments and their complementary method is not overridden.

3695 3696 3697
- Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as
  the module name that was not interned.

3698 3699
- Issue #14331: Use significantly less stack space when importing modules by
  allocating path buffers on the heap instead of the stack.
3700

3701 3702 3703
- Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not
  passed strings.

3704 3705 3706
- Issue #1469629: Allow cycles through an object's __dict__ slot to be
  collected. (For example if ``x.__dict__ is x``).

3707 3708 3709
- Issue #14205: dict lookup raises a RuntimeError if the dict is modified
  during a lookup.

3710 3711 3712
- Issue #14220: When a generator is delegating to another iterator with the
  yield from syntax, it needs to have its ``gi_running`` flag set to True.

3713 3714 3715
- Issue #14435: Remove dedicated block allocator from floatobject.c and rely
  on the PyObject_Malloc() api like all other objects.

3716 3717
- Issue #14471: Fix a possible buffer overrun in the winreg module.

3718 3719
- Issue #14288: Allow the serialization of builtin iterators

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3720 3721 3722
Library
-------

3723 3724 3725
- Issue #14300: Under Windows, sockets created using socket.dup() now allow
  overlapped I/O.  Patch by sbt.

3726 3727 3728
- Issue #13872: socket.detach() now marks the socket closed (as mirrored
  in the socket repr()).  Patch by Matt Joiner.

3729 3730 3731
- Issue #14406: Fix a race condition when using ``concurrent.futures.wait(
  return_when=ALL_COMPLETED)``.  Patch by Matt Joiner.

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3732
- Issue #5136: deprecate old, unused functions from tkinter.
3733

3734 3735 3736
- Issue #14416: syslog now defines the LOG_ODELAY and LOG_AUTHPRIV constants
  if they are defined in <syslog.h>.

3737 3738
- Issue #14295: Add unittest.mock

3739 3740 3741
- Issue #7652: Add --with-system-libmpdec option to configure for linking
  the _decimal module against an installed libmpdec.

3742 3743 3744
- Issue #14380: MIMEText now defaults to utf-8 when passed non-ASCII unicode
  with no charset specified.

3745 3746 3747 3748
- Issue #10340: asyncore - properly handle EINVAL in dispatcher constructor on
  OSX; avoid to call handle_connect in case of a disconnected socket which
  was not meant to connect.

3749 3750 3751 3752
- Issue #14204: The ssl module now has support for the Next Protocol
  Negotiation extension, if available in the underlying OpenSSL library.
  Patch by Colin Marc.

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3753
- Issue #3035: Unused functions from tkinter are marked as pending deprecated.
3754

3755 3756 3757
- Issue #12757: Fix the skipping of doctests when python is run with -OO so
  that it works in unittest's verbose mode as well as non-verbose mode.

3758 3759
- Issue #7652: Integrate the decimal floating point libmpdec library to speed
  up the decimal module. Performance gains of the new C implementation are
3760
  between 10x and 100x, depending on the application.
3761

3762 3763 3764
- Issue #14269: SMTPD now conforms to the RFC and requires a HELO command
  before MAIL, RCPT, or DATA.

3765 3766 3767
- Issue #13694: asynchronous connect in asyncore.dispatcher does not set addr
  attribute.

3768 3769
- Issue #14344: fixed the repr of email.policy objects.

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3770 3771 3772
- Issue #11686: Added missing entries to email package __all__ lists
  (mostly the new Bytes classes).

3773 3774 3775
- Issue #14335: multiprocessing's custom Pickler subclass now inherits from
  the C-accelerated implementation.  Patch by sbt.

3776 3777
- Issue #10484: Fix the CGIHTTPServer's PATH_INFO handling problem.

3778 3779
- Issue #11199: Fix the with urllib which hangs on particular ftp urls.

3780 3781
- Improve the memory utilization and speed of functools.lru_cache.

3782 3783 3784 3785
- Issue #14222: Use the new time.steady() function instead of time.time() for
  timeout in queue and threading modules to not be affected of system time
  update.

3786 3787
- Issue #13248: Remove lib2to3.pytree.Base.get_prefix/set_prefix.

3788 3789 3790 3791 3792
- Issue #14234: CVE-2012-0876: Randomize hashes of xml attributes in the hash
  table internal to the pyexpat module's copy of the expat library to avoid a
  denial of service due to hash collisions.  Patch by David Malcolm with some
  modifications by the expat project.

3793 3794 3795
- Issue #12818: format address no longer needlessly \ escapes ()s in names when
  the name ends up being quoted.

3796 3797 3798
- Issue #14062: BytesGenerator now correctly folds Header objects,
  including using linesep when folding.

3799 3800 3801 3802
- Issue #13839: When invoked on the command-line, the pstats module now
  accepts several filenames of profile stat files and merges them all.
  Patch by Matt Joiner.

3803 3804 3805
- Issue #14291: Email now defaults to utf-8 for non-ASCII unicode headers
  instead of raising an error.  This fixes a regression relative to 2.7.

3806 3807
- Issue #989712: Support using Tk without a mainloop.

3808 3809
- Issue #3835: Refuse to use unthreaded Tcl in threaded Python.

3810 3811
- Issue #2843: Add new Tk API to Tkinter.

3812 3813 3814
- Issue #14184: Increase the default stack size for secondary threads on
  Mac OS X to avoid interpreter crashes when using threads on 10.7.

3815 3816 3817 3818
- Issue #14180: datetime.date.fromtimestamp(),
  datetime.datetime.fromtimestamp() and datetime.datetime.utcfromtimestamp()
  now raise an OSError instead of ValueError if localtime() or gmtime() failed.

3819 3820 3821 3822 3823 3824 3825 3826 3827
- Issue #14180: time.ctime(), gmtime(), time.localtime(),
  datetime.date.fromtimestamp(), datetime.datetime.fromtimestamp() and
  datetime.datetime.utcfromtimestamp() now raises an OverflowError, instead of
  a ValueError, if the timestamp does not fit in time_t.

- Issue #14180: datetime.datetime.fromtimestamp() and
  datetime.datetime.utcfromtimestamp() now round microseconds towards zero
  instead of rounding to nearest with ties going away from zero.

3828 3829
- Issue #10543: Fix unittest test discovery with Jython bytecode files.

3830 3831 3832 3833
- Issue #1178863: Separate initialisation from setting when initializing
  Tkinter.Variables; harmonize exceptions to ValueError; only delete variables
  that have not been deleted; assert that variable names are strings.

3834 3835 3836
- Issue #14104: Implement time.monotonic() on Mac OS X, patch written by
  Nicholas Riley.

3837 3838
- Issue #13394: the aifc module now uses warnings.warn() to signal warnings.

3839 3840 3841
- Issue #14252: Fix subprocess.Popen.terminate() to not raise an error under
  Windows when the child process has already exited.

3842 3843 3844 3845
- Issue #14223: curses.addch() is no more limited to the range 0-255 when the
  Python curses is not linked to libncursesw. It was a regression introduced
  in Python 3.3a1.

3846
- Issue #14168: Check for presence of Element._attrs in minidom before
3847 3848
  accessing it.

3849 3850 3851 3852
- Issue #12328: Fix multiprocessing's use of overlapped I/O on Windows.
  Also, add a multiprocessing.connection.wait(rlist, timeout=None) function
  for polling multiple objects at once.  Patch by sbt.

3853 3854 3855 3856
- Issue #14007: Accept incomplete TreeBuilder objects (missing start, end,
  data or close method) for the Python implementation as well.
  Drop the no-op TreeBuilder().xml() method from the C implementation.

3857 3858 3859
- Issue #14210: pdb now has tab-completion not only for command names, but
  also for their arguments, wherever possible.

3860 3861 3862
- Issue #14310: Sockets can now be with other processes on Windows using
  the api socket.socket.share() and socket.fromshare().

3863 3864 3865
- Issue #10576: The gc module now has a 'callbacks' member that will get
  called when garbage collection takes place.

3866 3867 3868
Build
-----

3869 3870
- Issue #14557: Fix extensions build on HP-UX. Patch by Adi Roiban.

3871 3872
- Issue #14387: Do not include accu.h from Python.h.

3873 3874 3875
- Issue #14359: Only use O_CLOEXEC in _posixmodule.c if it is defined.
  Based on patch from Hervé Coatanhay.

3876
- Issue #14321: Do not run pgen during the build if files are up to date.
3877

3878 3879 3880 3881 3882
Documentation
-------------

- Issue #14034: added the argparse tutorial.

3883 3884
- Issue #14324: Fix configure tests for cross builds.

3885
- Issue #14327: Call AC_CANONICAL_HOST in configure.ac and check in
3886
  config.{guess,sub}. Don't use uname calls for cross builds.
3887

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3888 3889 3890
Extension Modules
-----------------

3891 3892 3893
- Issue #9041: An issue in ctypes.c_longdouble, ctypes.c_double, and
  ctypes.c_float that caused an incorrect exception to be returned in the
  case of overflow has been fixed.
3894

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3895 3896 3897
- Issue #14212: The re module didn't retain a reference to buffers it was
  scanning, resulting in segfaults.

3898 3899 3900
- Issue #14259: The finditer() method of re objects did not take any
  keyword arguments, contrary to the documentation.

3901 3902
- Issue #10142: Support for SEEK_HOLE/SEEK_DATA (for example, under ZFS).

3903 3904 3905
Tests
-----

3906 3907
- Issue #14442: Add missing errno import in test_smtplib.

3908 3909
- Issue #8315: (partial fix) python -m unittest test.test_email now works.

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3910

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3911 3912
What's New in Python 3.3.0 Alpha 1?
===================================
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3913

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3914
*Release date: 05-Mar-2012*
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3915

3916 3917 3918
Core and Builtins
-----------------

3919 3920 3921
- Issue #14172: Fix reference leak when marshalling a buffer-like object
  (other than a bytes object).

3922 3923 3924
- Issue #13521: dict.setdefault() now does only one lookup for the given key,
  making it "atomic" for many purposes.  Patch by Filip Gruszczyński.

3925 3926 3927 3928
- PEP 409, Issue #6210: "raise X from None" is now supported as a means of
  suppressing the display of the chained exception context. The chained
  context still remains available as the __context__ attribute.

3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945
- Issue #10181: New memoryview implementation fixes multiple ownership
  and lifetime issues of dynamically allocated Py_buffer members (#9990)
  as well as crashes (#8305, #7433). Many new features have been added
  (See whatsnew/3.3), and the documentation has been updated extensively.
  The ndarray test object from _testbuffer.c implements all aspects of
  PEP-3118, so further development towards the complete implementation
  of the PEP can proceed in a test-driven manner.

  Thanks to Nick Coghlan, Antoine Pitrou and Pauli Virtanen for review
  and many ideas.

- Issue #12834: Fix incorrect results of memoryview.tobytes() for
  non-contiguous arrays.

- Issue #5231: Introduce memoryview.cast() method that allows changing
  format and shape without making a copy of the underlying memory.

3946 3947 3948
- Issue #14084: Fix a file descriptor leak when importing a module with a
  bad encoding.

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3949 3950
- Upgrade Unicode data to Unicode 6.1.

3951 3952 3953
- Issue #14040: Remove rarely used file name suffixes for C extensions
  (under POSIX mainly).

3954 3955 3956
- Issue #14051: Allow arbitrary attributes to be set of classmethod and
  staticmethod.

3957 3958 3959
- Issue #13703: oCERT-2011-003: Randomize hashes of str and bytes to protect
  against denial of service attacks due to hash collisions within the dict and
  set types.  Patch by David Malcolm, based on work by Victor Stinner.
3960

3961 3962 3963
- Issue #13020: Fix a reference leak when allocating a structsequence object
  fails.  Patch by Suman Saha.

3964 3965
- Issue #13908: Ready types returned from PyType_FromSpec.

3966 3967 3968
- Issue #11235: Fix OverflowError when trying to import a source file whose
  modification time doesn't fit in a 32-bit timestamp.

3969 3970 3971
- Issue #12705: A SyntaxError exception is now raised when attempting to
  compile multiple statements as a single interactive statement.

3972 3973 3974
- Fix the builtin module initialization code to store the init function for
  future reinitialization.

3975 3976 3977 3978 3979
- Issue #8052: The posix subprocess module would take a long time closing
  all possible file descriptors in the child process rather than just open
  file descriptors.  It now closes only the open fds if possible for the
  default close_fds=True behavior.

3980 3981 3982
- Issue #13629: Renumber the tokens in token.h so that they match the indexes
  into _PyParser_TokenNames.

3983 3984
- Issue #13752: Add a casefold() method to str.

3985 3986 3987
- Issue #13761: Add a "flush" keyword argument to the print() function,
  used to ensure flushing the output stream.

3988 3989 3990 3991
- Issue #13645: pyc files now contain the size of the corresponding source
  code, to avoid timestamp collisions (especially on filesystems with a low
  timestamp resolution) when checking for freshness of the bytecode.

3992 3993 3994 3995
- PEP 380, Issue #11682: Add "yield from <x>" to support easy delegation to
  subgenerators (initial patch by Greg Ewing, integration into 3.3 by
  Renaud Blanch, Ryan Kelly, Zbigniew Jędrzejewski-Szmek and Nick Coghlan)

3996 3997 3998
- Issue #13748: Raw bytes literals can now be written with the ``rb`` prefix
  as well as ``br``.

3999 4000
- Issue #12736: Use full unicode case mappings for upper, lower, and title case.

4001 4002
- Issue #12760: Add a create mode to open(). Patch by David Townshend.

4003 4004
- Issue #13738: Simplify implementation of bytes.lower() and bytes.upper().

4005 4006 4007
- Issue #13577: Built-in methods and functions now have a __qualname__.
  Patch by sbt.

4008 4009 4010
- Issue #6695: Full garbage collection runs now clear the freelist of set
  objects.  Initial patch by Matthias Troffaes.

4011 4012 4013
- Fix OSError.__init__ and OSError.__new__ so that each of them can be
  overriden and take additional arguments (followup to issue #12555).

4014 4015 4016 4017
- Fix the fix for issue #12149: it was incorrect, although it had the side
  effect of appearing to resolve the issue.  Thanks to Mark Shannon for
  noticing.

4018 4019 4020
- Issue #13505: Pickle bytes objects in a way that is compatible with
  Python 2 when using protocols <= 2.

4021 4022 4023
- Issue #11147: Fix an unused argument in _Py_ANNOTATE_MEMORY_ORDER.  (Fix
  given by Campbell Barton).

4024 4025 4026 4027
- Issue #13503: Use a more efficient reduction format for bytearrays with
  pickle protocol >= 3.  The old reduction format is kept with older protocols
  in order to allow unpickling under Python 2.  Patch by Irmen de Jong.

4028 4029 4030 4031
- Issue #7111: Python can now be run without a stdin, stdout or stderr
  stream.  It was already the case with Python 2.  However, the corresponding
  sys module entries are now set to None (instead of an unusable file object).

4032 4033 4034 4035
- Issue #11849: Ensure that free()d memory arenas are really released
  on POSIX systems supporting anonymous memory mappings.  Patch by
  Charles-François Natali.

4036 4037
- PEP 3155 / issue #13448: Qualified name for classes and functions.

4038 4039 4040
- Issue #13436: Fix a bogus error message when an AST object was passed
  an invalid integer value.

4041 4042 4043
- Issue #13411: memoryview objects are now hashable when the underlying
  object is hashable.

4044 4045 4046 4047
- Issue #13338: Handle all enumerations in _Py_ANNOTATE_MEMORY_ORDER
  to allow compiling extension modules with -Wswitch-enum on gcc.
  Initial patch by Floris Bruynooghe.

4048 4049 4050
- Issue #10227: Add an allocation cache for a single slice object.  Patch by
  Stefan Behnel.

4051 4052 4053
- Issue #13393: BufferedReader.read1() now asks the full requested size to
  the raw stream instead of limiting itself to the buffer size.

4054 4055
- Issue #13392: Writing a pyc file should now be atomic under Windows as well.

4056 4057 4058
- Issue #13333: The UTF-7 decoder now accepts lone surrogates (the encoder
  already accepts them).

4059 4060 4061 4062
- Issue #13389: Full garbage collection passes now clear the freelists for
  list and dict objects.  They already cleared other freelists in the
  interpreter.

4063
- Issue #13327: Remove the need for an explicit None as the second argument
Brian Curtin's avatar
Brian Curtin committed
4064 4065 4066
  to os.utime, os.lutimes, os.futimes, os.futimens, os.futimesat, in
  order to update to the current time. Also added keyword argument
  handling to os.utimensat in order to remove the need for explicit None.
4067

4068 4069 4070
- Issue #13350: Simplify some C code by replacing most usages of
  PyUnicode_Format by PyUnicode_FromFormat.

4071 4072 4073
- Issue #13342: input() used to ignore sys.stdin's and sys.stdout's unicode
  error handler in interactive mode (when calling into PyOS_Readline()).

4074 4075
- Issue #9896: Add start, stop, and step attributes to range objects.

4076
- Issue #13343: Fix a SystemError when a lambda expression uses a global
Georg Brandl's avatar
Georg Brandl committed
4077 4078
  variable in the default value of a keyword-only argument: ``lambda *,
  arg=GLOBAL_NAME: None``
4079

4080 4081 4082
- Issue #12797: Added custom opener parameter to builtin open() and
  FileIO.open().

4083 4084 4085
- Issue #10519: Avoid unnecessary recursive function calls in
  setobject.c.

4086 4087
- Issue #10363: Deallocate global locks in Py_Finalize().

4088 4089 4090
- Issue #13018: Fix reference leaks in error paths in dictobject.c.
  Patch by Suman Saha.

4091 4092 4093 4094
- Issue #13201: Define '==' and '!=' to compare range objects based on
  the sequence of values they define (instead of comparing based on
  object identity).

4095 4096 4097 4098
- Issue #1294232: In a few cases involving metaclass inheritance, the
  interpreter would sometimes invoke the wrong metaclass when building a new
  class object. These cases now behave correctly. Patch by Daniel Urban.

4099
- Issue #12753: Add support for Unicode name aliases and named sequences.
Georg Brandl's avatar
Georg Brandl committed
4100 4101
  Both ``unicodedata.lookup()`` and '\N{...}' now resolve aliases,
  and ``unicodedata.lookup()`` resolves named sequences too.
4102

4103 4104 4105 4106
- Issue #12170: The count(), find(), rfind(), index() and rindex() methods
  of bytes and bytearray objects now accept an integer between 0 and 255
  as their first argument.  Patch by Petri Lehtinen.

4107 4108 4109
- Issue #12604: VTRACE macro expanded to no-op in _sre.c to avoid compiler
  warnings. Patch by Josh Triplett and Petri Lehtinen.

4110 4111 4112 4113
- Issue #12281: Rewrite the MBCS codec to handle correctly replace and ignore
  error handlers on all Windows versions. The MBCS codec is now supporting all
  error handlers, instead of only replace to encode and ignore to decode.

4114 4115 4116 4117
- Issue #13188: When called without an explicit traceback argument,
  generator.throw() now gets the traceback from the passed exception's
  ``__traceback__`` attribute.  Patch by Petri Lehtinen.

4118 4119
- Issue #13146: Writing a pyc file is now atomic under POSIX.

4120 4121 4122 4123
- Issue #7833: Extension modules built using distutils on Windows will no
  longer include a "manifest" to prevent them failing at import time in some
  embedded situations.

4124 4125
- PEP 3151 / issue #12555: reworking the OS and IO exception hierarchy.

4126
- Add internal API for static strings (_Py_identifier et al.).
4127

4128 4129 4130 4131
- Issue #13063: the Windows error ERROR_NO_DATA (numbered 232 and described
  as "The pipe is being closed") is now mapped to POSIX errno EPIPE
  (previously EINVAL).

4132 4133 4134
- Issue #12911: Fix memory consumption when calculating the repr() of huge
  tuples or lists.

Martin v. Löwis's avatar
Martin v. Löwis committed
4135 4136
- PEP 393: flexible string representation. Thanks to Torsten Becker for the
  initial implementation, and Victor Stinner for various bug fixes.
Martin v. Löwis's avatar
Martin v. Löwis committed
4137

4138 4139 4140
- Issue #14081: The 'sep' and 'maxsplit' parameter to str.split, bytes.split,
  and bytearray.split may now be passed as keyword arguments.

4141 4142 4143 4144
- Issue #13012: The 'keepends' parameter to str.splitlines may now be passed
  as a keyword argument:  "my_string.splitlines(keepends=True)".  The same
  change also applies to bytes.splitlines and bytearray.splitlines.

4145 4146 4147 4148
- Issue #7732: Don't open a directory as a file anymore while importing a
  module. Ignore the direcotry if its name matchs the module name (e.g.
  "__init__.py") and raise a ImportError instead.

4149 4150 4151
- Issue #13021: Missing decref on an error path.  Thanks to Suman Saha for
  finding the bug and providing a patch.

4152 4153 4154
- Issue #12973: Fix overflow checks that relied on undefined behaviour in
  list_repeat (listobject.c) and islice_next (itertoolsmodule.c).  These bugs
  caused test failures with recent versions of Clang.
4155

4156 4157 4158
- Issue #12904: os.utime, os.futimes, os.lutimes, and os.futimesat now write
  atime and mtime with nanosecond precision on modern POSIX platforms.

4159 4160 4161
- Issue #12802: the Windows error ERROR_DIRECTORY (numbered 267) is now
  mapped to POSIX errno ENOTDIR (previously EINVAL).

4162 4163 4164
- Issue #9200: The str.is* methods now work with strings that contain non-BMP
  characters even in narrow Unicode builds.

4165 4166 4167
- Issue #12791: Break reference cycles early when a generator exits with
  an exception.

4168 4169
- Issue #12773: Make __doc__ mutable on user-defined classes.

4170
- Issue #12766: Raise a ValueError when creating a class with a class variable
4171 4172
  that conflicts with a name in __slots__.

4173 4174 4175
- Issue #12266: Fix str.capitalize() to correctly uppercase/lowercase
  titlecased and cased non-letter characters.

4176 4177 4178
- Issue #12732: In narrow unicode builds, allow Unicode identifiers which fall
  outside the BMP.

4179 4180
- Issue #12575: Validate user-generated AST before it is compiled.

4181 4182
- Make type(None), type(Ellipsis), and type(NotImplemented) callable. They
  return the respective singleton instances.
4183

Benjamin Peterson's avatar
Benjamin Peterson committed
4184
- Forbid summing bytes with sum().
4185

4186 4187 4188
- Verify the types of AST strings and identifiers provided by the user before
  compiling them.

4189 4190 4191 4192
- Issue #12647: The None object now has a __bool__() method that returns False.
  Formerly, bool(None) returned False only because of special case logic
  in PyObject_IsTrue().

4193 4194 4195 4196
- Issue #12579: str.format_map() now raises a ValueError if used on a
  format string that contains positional fields. Initial patch by
  Julian Berman.

4197 4198
- Issue #10271: Allow warnings.showwarning() be any callable.

4199 4200
- Issue #11627: Fix segfault when __new__ on a exception returns a
  non-exception class.
4201

Georg Brandl's avatar
Georg Brandl committed
4202
- Issue #12149: Update the method cache after a type's dictionary gets
4203 4204 4205 4206 4207
  cleared by the garbage collector.  This fixes a segfault when an instance
  and its type get caught in a reference cycle, and the instance's
  deallocator calls one of the methods on the type (e.g. when subclassing
  IOBase).  Diagnosis and patch by Davide Rizzo.

4208 4209
- Issue #9611, #9015: FileIO.read() clamps the length to INT_MAX on Windows.

4210 4211 4212
- Issue #9642: Uniformize the tests on the availability of the mbcs codec, add
  a new HAVE_MBCS define.

4213 4214 4215 4216 4217
- Issue #9642: Fix filesystem encoding initialization: use the ANSI code page
  on Windows if the mbcs codec is not available, and fail with a fatal error if
  we cannot get the locale encoding (if nl_langinfo(CODESET) is not available)
  instead of using UTF-8.

4218 4219 4220
- When a generator yields, do not retain the caller's exception state on the
  generator.

4221
- Issue #12475: Prevent generators from leaking their exception state into the
Benjamin Peterson's avatar
add '  
Benjamin Peterson committed
4222
  caller's frame as they return for the last time.
4223

4224 4225 4226
- Issue #12291: You can now load multiple marshalled objects from a stream,
  with other data interleaved between marshalled objects.

4227 4228 4229 4230
- Issue #12356: When required positional or keyword-only arguments are not
  given, produce a informative error message which includes the name(s) of the
  missing arguments.

4231
- Issue #12370: Fix super with no arguments when __class__ is overriden in the
4232 4233
  class body.

4234 4235 4236
- Issue #12084: os.stat on Windows now works properly with relative symbolic
  links when called from any directory.

4237 4238 4239
- Loosen type restrictions on the __dir__ method. __dir__ can now return any
  sequence, which will be converted to a list and sorted by dir().

4240 4241 4242
- Issue #12265: Make error messages produced by passing an invalid set of
  arguments to a function more informative.

Benjamin Peterson's avatar
Benjamin Peterson committed
4243 4244 4245
- Issue #12225: Still allow Python to build if Python is not in its hg repo or
  mercurial is not installed.

4246
- Issue #1195: my_fgets() now always clears errors before calling fgets(). Fix
4247 4248 4249
  the following case: sys.stdin.read() stopped with CTRL+d (end of file),
  raw_input() interrupted by CTRL+c.

4250 4251
- Issue #12216: Allow unexpected EOF errors to happen on any line of the file.

4252 4253 4254
- Issue #12199: The TryExcept and TryFinally and AST nodes have been unified
  into a Try node.

4255 4256 4257 4258 4259
- Issue #9670: Increase the default stack size for secondary threads on
  Mac OS X and FreeBSD to reduce the chances of a crash instead of a
  "maximum recursion depth" RuntimeError exception.
  (patch by Ronald Oussoren)

4260 4261 4262
- Issue #12106: The use of the multiple-with shorthand syntax is now reflected
  in the AST.

4263 4264 4265
- Issue #12190: Try to use the same filename object when compiling unmarshalling
  a code objects in the same file.

4266 4267 4268
- Issue #12166: Move implementations of dir() specialized for various types into
  the __dir__() methods of those types.

4269
- Issue #5715: In socketserver, close the server socket in the child process.
4270

Benjamin Peterson's avatar
Benjamin Peterson committed
4271 4272 4273
- Correct lookup of __dir__ on objects. Among other things, this causes errors
  besides AttributeError found on lookup to be propagated.

4274 4275 4276
- Issue #12060: Use sig_atomic_t type and volatile keyword in the signal
  module. Patch written by Charles-François Natali.

4277 4278
- Issue #1746656: Added the if_nameindex, if_indextoname, if_nametoindex
  methods to the socket module.
4279

4280 4281 4282 4283
- Issue #12044: Fixed subprocess.Popen when used as a context manager to
  wait for the process to end when exiting the context to avoid unintentionally
  leaving zombie processes around.

4284 4285 4286
- Issue #1195: Fix input() if it is interrupted by CTRL+d and then CTRL+c,
  clear the end-of-file indicator after CTRL+d.

4287 4288 4289 4290
- Issue #1856: Avoid crashes and lockups when daemon threads run while the
  interpreter is shutting down; instead, these threads are now killed when
  they try to take the GIL.

4291 4292 4293
- Issue #9756: When calling a method descriptor or a slot wrapper descriptor,
  the check of the object type doesn't read the __class__ attribute anymore.
  Fix a crash if a class override its __class__ attribute (e.g. a proxy of the
4294
  str type). Patch written by Andreas Stührk.
4295

4296 4297 4298 4299
- Issue #10517: After fork(), reinitialize the TLS used by the PyGILState_*
  APIs, to avoid a crash with the pthread implementation in RHEL 5.  Patch
  by Charles-François Natali.

4300 4301 4302 4303
- Issue #10914: Initialize correctly the filesystem codec when creating a new
  subinterpreter to fix a bootstrap issue with codecs implemented in Python, as
  the ISO-8859-15 codec.

4304 4305 4306
- Issue #11918: OS/2 and VMS are no more supported because of the lack of
  maintainer.

4307 4308 4309
- Issue #6780: fix starts/endswith error message to mention that tuples are
  accepted too.

4310 4311 4312 4313
- Issue #5057: fix a bug in the peepholer that led to non-portable pyc files
  between narrow and wide builds while optimizing BINARY_SUBSCR on non-BMP
  chars (e.g. "\U00012345"[0]).

4314 4315 4316
- Issue #11845: Fix typo in rangeobject.c that caused a crash in
  compute_slice_indices.  Patch by Daniel Urban.

4317 4318 4319 4320 4321
- Issue #5673: Added a `timeout` keyword argument to subprocess.Popen.wait,
  subprocess.Popen.communicated, subprocess.call, subprocess.check_call, and
  subprocess.check_output.  If the blocking operation takes more than `timeout`
  seconds, the `subprocess.TimeoutExpired` exception is raised.

4322 4323 4324 4325
- Issue #11650: PyOS_StdioReadline() retries fgets() if it was interrupted
  (EINTR), for example if the program is stopped with CTRL+z on Mac OS X. Patch
  written by Charles-Francois Natali.

4326 4327
- Issue #9319: Include the filename in "Non-UTF8 code ..." syntax error.

4328 4329
- Issue #10785: Store the filename as Unicode in the Python parser.

4330 4331 4332
- Issue #11619: _PyImport_LoadDynamicModule() doesn't encode the path to bytes
  on Windows.

4333 4334 4335
- Issue #10998: Remove mentions of -Q, sys.flags.division_warning and
  Py_DivisionWarningFlag left over from Python 2.

4336 4337 4338
- Issue #11244: Remove an unnecessary peepholer check that was preventing
  negative zeros from being constant-folded properly.

4339 4340 4341 4342 4343 4344
- Issue #11395: io.FileIO().write() clamps the data length to 32,767 bytes on
  Windows if the file is a TTY to workaround a Windows bug. The Windows console
  returns an error (12: not enough space error) on writing into stdout if
  stdout mode is binary and the length is greater than 66,000 bytes (or less,
  depending on heap usage).

4345
- Issue #11320: fix bogus memory management in Modules/getpath.c, leading to
4346 4347
  a possible crash when calling Py_SetPath().

Gregory P. Smith's avatar
Gregory P. Smith committed
4348 4349 4350 4351
- Issue #11432: A bug was introduced in subprocess.Popen on posix systems with
  3.2.0 where the stdout or stderr file descriptor being the same as the stdin
  file descriptor would raise an exception. webbrowser.open would fail. fixed.

4352 4353 4354 4355
- Issue #9856: Change object.__format__ with a non-empty format string
  to be a DeprecationWarning. In 3.2 it was a PendingDeprecationWarning.
  In 3.4 it will be a TypeError.

4356 4357 4358 4359
- Issue #11244: The peephole optimizer is now able to constant-fold
  arbitrarily complex expressions.  This also fixes a 3.2 regression where
  operations involving negative numbers were not constant-folded.

4360 4361 4362
- Issue #11450: Don't truncate hg version info in Py_GetBuildInfo() when
  there are many tags (e.g. when using mq).  Patch by Nadeem Vawda.

4363 4364 4365
- Issue #11335: Fixed a memory leak in list.sort when the key function
  throws an exception.

4366 4367 4368 4369 4370
- Issue #8923: When a string is encoded to UTF-8 in strict mode, the result is
  cached into the object. Examples: str.encode(), str.encode('utf-8'),
  PyUnicode_AsUTF8String() and PyUnicode_AsEncodedString(unicode, "utf-8",
  NULL).

4371 4372 4373
- Issue #10829: Refactor PyUnicode_FromFormat(), use the same function to parse
  the format string in the 3 steps, fix crashs on invalid format strings.

4374 4375
- Issue #13007: whichdb should recognize gdbm 1.9 magic numbers.

4376 4377 4378
- Issue #11286: Raise a ValueError from calling PyMemoryView_FromBuffer with
  a buffer struct having a NULL data pointer.

4379 4380 4381
- Issue #11272: On Windows, input() strips '\r' (and not only '\n'), and
  sys.stdin uses universal newline (replace '\r\n' by '\n').

4382
- Issue #11828: startswith and endswith now accept None as slice index.
4383 4384
  Patch by Torsten Becker.

4385 4386 4387 4388
- Issue #11168: Remove filename debug variable from PyEval_EvalFrameEx().
  It encoded the Unicode filename to UTF-8, but the encoding fails on
  undecodable filename (on surrogate characters) which raises an unexpected
  UnicodeEncodeError on recursion limit.
4389

4390 4391 4392 4393
- Issue #11187: Remove bootstrap code (use ASCII) of
  PyUnicode_AsEncodedString(), it was replaced by a better fallback (use the
  locale encoding) in PyUnicode_EncodeFSDefault().

4394 4395
- Check for NULL result in PyType_FromSpec.

4396
- Issue #10516: New copy() and clear() methods for lists and bytearrays.
4397

4398 4399 4400
- Issue #11386: bytearray.pop() now throws IndexError when the bytearray is
  empty, instead of OverflowError.

4401 4402 4403
- Issue #12380: The rjust, ljust and center methods of bytes and bytearray
  now accept a bytearray argument.

4404 4405
Library
-------
4406

4407 4408 4409 4410
- Issue #14195: An issue that caused weakref.WeakSet instances to incorrectly
  return True for a WeakSet instance 'a' in both 'a < a' and 'a > a' has been
  fixed.

4411 4412 4413 4414
- Issue #14166: Pickler objects now have an optional ``dispatch_table``
  attribute which allows to set custom per-pickler reduction functions.
  Patch by sbt.

4415 4416 4417
- Issue #14177: marshal.loads() now raises TypeError when given an unicode
  string.  Patch by Guilherme Gonçalves.

4418 4419 4420
- Issue #13550: Remove the debug machinery from the threading module: remove
  verbose arguments from all threading classes and functions.

4421 4422 4423 4424 4425
- Issue #14159: Fix the len() of weak containers (WeakSet, WeakKeyDictionary,
  WeakValueDictionary) to return a better approximation when some objects
  are dead or dying.  Moreover, the implementation is now O(1) rather than
  O(n).

4426 4427 4428
- Issue #11841: Fix comparison bug with 'rc' versions in packaging.version.
  Patch by Filip Gruszczyński.

4429
- Issue #6884: Fix long-standing bugs with MANIFEST.in parsing in distutils
4430
  on Windows.  Also fixed in packaging.
4431

4432 4433 4434
- Issue #8033: sqlite3: Fix 64-bit integer handling in user functions
  on 32-bit architectures. Initial patch by Philippe Devalkeneer.

4435 4436
- HTMLParser is now able to handle slashes in the start tag.

4437 4438 4439
- Issue #13641: Decoding functions in the base64 module now accept ASCII-only
  unicode strings.  Patch by Catalin Iacob.

4440 4441 4442
- Issue #14043: Speed up importlib's _FileFinder by at least 8x, and add a
  new importlib.invalidate_caches() function.

4443 4444 4445
- Issue #14001: CVE-2012-0845: xmlrpc: Fix an endless loop in
  SimpleXMLRPCServer upon malformed POST request.

4446 4447
- Issue #13961: Move importlib over to using os.replace() for atomic renaming.

4448 4449 4450
- Do away with ambiguous level values (as suggested by PEP 328) in
  importlib.__import__() by raising ValueError when level < 0.

4451 4452
- Issue #2489: pty.spawn could consume 100% cpu when it encountered an EOF.

4453 4454
- Issue #13014: Fix a possible reference leak in SSLSocket.getpeercert().

4455 4456 4457
- Issue #13777: Add PF_SYSTEM sockets on OS X.
  Patch by Michael Goderbauer.

4458 4459 4460
- Issue #13015: Fix a possible reference leak in defaultdict.__repr__.
  Patch by Suman Saha.

4461 4462 4463
- Issue #1326113: distutils' and packaging's build_ext commands option now
  correctly parses multiple values (separated by whitespace or commas) given
  to their --libraries option.
4464

4465 4466 4467 4468
- Issue #10287: nntplib now queries the server's CAPABILITIES first before
  sending MODE READER, and only sends it if not already in READER mode.
  Patch by Hynek Schlawack.

4469 4470 4471
- Issue #13993: HTMLParser is now able to handle broken end tags when
  strict=False.

4472 4473 4474 4475
- Issue #13930: lib2to3 now supports writing converted output files to another
  directory tree as well as copying unchanged files and altering the file
  suffix.

4476 4477 4478 4479
- Issue #9750: Fix sqlite3.Connection.iterdump on tables and fields
  with a name that is a keyword or contains quotes. Patch by Marko
  Kohtala.

4480 4481 4482 4483
- Issue #10287: nntplib now queries the server's CAPABILITIES again after
  authenticating (since the result may change, according to RFC 4643).
  Patch by Hynek Schlawack.

4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496
- Issue #13590: On OS X 10.7 and 10.6 with Xcode 4.2, building
  Distutils-based packages with C extension modules may fail because
  Apple has removed gcc-4.2, the version used to build python.org
  64-bit/32-bit Pythons.  If the user does not explicitly override
  the default C compiler by setting the CC environment variable,
  Distutils will now attempt to compile extension modules with clang
  if gcc-4.2 is required but not found. Also as a convenience, if
  the user does explicitly set CC, substitute its value as the default
  compiler in the Distutils LDSHARED configuration variable for OS X.
  (Note, the python.org 32-bit-only Pythons use gcc-4.0 and the 10.4u
  SDK, neither of which are available in Xcode 4.  This change does not
  attempt to override settings to support their use with Xcode 4.)

4497 4498 4499
- Issue #13960: HTMLParser is now able to handle broken comments when
  strict=False.

4500
- When '' is a path (e.g. in sys.path), make sure __file__ uses the current
Brett Cannon's avatar
Brett Cannon committed
4501
  working directory instead of '' in importlib.
4502

4503 4504 4505 4506
- Issue #13609: Add two functions to query the terminal size:
  os.get_terminal_size (low level) and shutil.get_terminal_size (high level).
  Patch by Zbigniew Jędrzejewski-Szmek.

4507 4508 4509
- Issue #13845: On Windows, time.time() now uses GetSystemTimeAsFileTime()
  instead of ftime() to have a resolution of 100 ns instead of 1 ms (the clock
  accuracy is between 0.5 ms and 15 ms).
4510

4511 4512
- Issue #13846: Add time.monotonic(), monotonic clock.

4513 4514 4515 4516 4517
- Issue #8184: multiprocessing: On Windows, don't set SO_REUSEADDR on
  Connection sockets, and set FILE_FLAG_FIRST_PIPE_INSTANCE on named pipes, to
  make sure two listeners can't bind to the same socket/pipe (or any existing
  socket/pipe).

4518 4519 4520
- Issue #10811: Fix recursive usage of cursors. Instead of crashing,
  raise a ProgrammingError now.

4521 4522 4523
- Issue #13734: Add os.fwalk(), a directory walking function yielding file
  descriptors.

4524 4525
- Issue #2945: Make the distutils upload command aware of bdist_rpm products.

4526 4527
- Issue #13712: pysetup create should not convert package_data to extra_files.

4528 4529
- Issue #11805: package_data in setup.cfg should allow more than one value.

4530 4531
- Issue #13676: Handle strings with embedded zeros correctly in sqlite3.

4532 4533 4534
- Issue #8828: Add new function os.replace(), for cross-platform renaming
  with overwriting.

4535 4536 4537
- Issue #13848: open() and the FileIO constructor now check for NUL
  characters in the file name.  Patch by Hynek Schlawack.

4538 4539 4540
- Issue #13806: The size check in audioop decompression functions was too
  strict and could reject valid compressed data.  Patch by Oleg Plakhotnyuk.

4541 4542 4543
- Issue #13812: When a multiprocessing Process child raises an exception,
  flush stderr after printing the exception traceback.

4544 4545 4546
- Issue #13885: CVE-2011-3389: the _ssl module would always disable the CBC
  IV attack countermeasure.

4547 4548
- Issue #13847: time.localtime() and time.gmtime() now raise an OSError instead
  of ValueError on failure. time.ctime() and time.asctime() now raises an
4549 4550
  OSError if localtime() failed. time.clock() now raises a RuntimeError if the
  processor time used is not available or its value cannot be represented
4551

4552 4553 4554 4555
- Issue #13772: In os.symlink() under Windows, do not try to guess the link
  target's type (file or directory).  The detection was buggy and made the
  call non-atomic (therefore prone to race conditions).

4556
- Issue #6631: Disallow relative file paths in urllib urlopen methods.
4557

4558 4559 4560
- Issue #13722: Avoid silencing ImportErrors when initializing the codecs
  registry.

4561 4562 4563
- Issue #13781: Fix GzipFile bug that caused an exception to be raised when
  opening for writing using a fileobj returned by os.fdopen().

4564 4565 4566
- Issue #13803: Under Solaris, distutils doesn't include bitness
  in the directory name.

4567 4568
- Issue #10278: Add time.wallclock() function, monotonic clock.

4569 4570 4571
- Issue #13809: Fix regression where bz2 module wouldn't work when threads are
  disabled. Original patch by Amaury Forgeot d'Arc.

4572 4573 4574
- Issue #13589: Fix some serialization primitives in the aifc module.
  Patch by Oleg Plakhotnyuk.

4575
- Issue #13642: Unquote before b64encoding ``user:password`` during Basic
4576 4577
  Authentication. Patch contributed by Joonas Kuorilehto.

4578 4579 4580 4581
- Issue #12364: Fix a hang in concurrent.futures.ProcessPoolExecutor.
  The hang would occur when retrieving the result of a scheduled future after
  the executor had been shut down.

4582 4583 4584
- Issue #13502: threading: Fix a race condition in Event.wait() that made it
  return False when the event was set and cleared right after.

4585 4586 4587 4588 4589
- Issue #9993: When the source and destination are on different filesystems,
  and the source is a symlink, shutil.move() now recreates a symlink on the
  destination instead of copying the file contents.  Patch by Jonathan Niehof
  and Hynek Schlawack.

4590 4591
- Issue #12926: Fix a bug in tarfile's link extraction.

4592 4593
- Issue #13696: Fix the 302 Relative URL Redirection problem.

4594 4595 4596
- Issue #13636: Weak ciphers are now disabled by default in the ssl module
  (except when SSLv2 is explicitly asked for).

4597 4598 4599 4600 4601
- Issue #12715: Add an optional symlinks argument to shutil functions
  (copyfile, copymode, copystat, copy, copy2).  When that parameter is
  true, symlinks aren't dereferenced and the operation instead acts on the
  symlink itself (or creates one, if relevant).  Patch by Hynek Schlawack.

4602 4603
- Add a flags parameter to select.epoll.

4604 4605 4606
- Issue #13626: Add support for SSL Diffie-Hellman key exchange, through the
  SSLContext.load_dh_params() method and the ssl.OP_SINGLE_DH_USE option.

4607 4608
- Issue #11006: Don't issue low level warning in subprocess when pipe2() fails.

4609
- Issue #13620: Support for Chrome browser in webbrowser.  Patch contributed
4610 4611
  by Arnaud Calmettes.

4612 4613 4614
- Issue #11829: Fix code execution holes in inspect.getattr_static for
  metaclasses with metaclasses. Patch by Andreas Stührk.

4615 4616 4617
- Issue #12708: Add starmap() and starmap_async() methods (similar to
  itertools.starmap()) to multiprocessing.Pool.  Patch by Hynek Schlawack.

4618 4619
- Issue #1785: Fix inspect and pydoc with misbehaving descriptors.

4620 4621 4622
- Issue #13637: "a2b" functions in the binascii module now accept ASCII-only
  unicode strings.

4623 4624
- Issue #13634: Add support for querying and disabling SSL compression.

4625 4626 4627 4628
- Issue #13627: Add support for SSL Elliptic Curve-based Diffie-Hellman
  key exchange, through the SSLContext.set_ecdh_curve() method and the
  ssl.OP_SINGLE_ECDH_USE option.

4629 4630 4631 4632
- Issue #13635: Add ssl.OP_CIPHER_SERVER_PREFERENCE, so that SSL servers
  choose the cipher based on their own preferences, rather than on the
  client's.

4633
- Issue #11813: Fix inspect.getattr_static for modules. Patch by Andreas
4634 4635
  Stührk.

4636 4637 4638
- Issue #7502: Fix equality comparison for DocTestCase instances.  Patch by
  Cédric Krier.

4639 4640 4641
- Issue #11870: threading: Properly reinitialize threads internal locks and
  condition variables to avoid deadlocks in child processes.

4642 4643 4644
- Issue #8035: urllib: Fix a bug where the client could remain stuck after a
  redirection or an error.

4645 4646 4647
- Issue #13560: os.strerror() now uses the current locale encoding instead of
  UTF-8.

4648 4649 4650 4651
- Issue #8373: The filesystem path of AF_UNIX sockets now uses the filesystem
  encoding and the surrogateescape error handler, rather than UTF-8.  Patch
  by David Watson.

4652 4653 4654
- Issue #10350: Read and save errno before calling a function which might
  overwrite it.  Original patch by Hallvard B Furuseth.

4655 4656
- Issue #11610: Introduce a more general way to declare abstract properties.

4657 4658 4659
- Issue #13591: A bug in importlib has been fixed that caused import_module
  to load a module twice.

4660 4661 4662 4663
- Issue #13449 sched.scheduler.run() method has a new "blocking" parameter which
  when set to False makes run() execute the scheduled events due to expire
  soonest (if any) and then return.  Patch by Giampaolo Rodolà.

4664
- Issue #8684 sched.scheduler class can be safely used in multi-threaded
4665
  environments.  Patch by Josiah Carlson and Giampaolo Rodolà.
4666

4667 4668
- Alias resource.error to OSError ala PEP 3151.

4669 4670
- Issue #5689: Add support for lzma compression to the tarfile module.

4671 4672 4673 4674 4675
- Issue #13248: Turn 3.2's PendingDeprecationWarning into 3.3's
  DeprecationWarning.  It covers 'cgi.escape', 'importlib.abc.PyLoader',
  'importlib.abc.PyPycLoader', 'nntplib.NNTP.xgtitle', 'nntplib.NNTP.xpath',
  and private attributes of 'smtpd.SMTPChannel'.

4676 4677
- Issue #5905, #13560: time.strftime() is now using the current locale
  encoding, instead of UTF-8, if the wcsftime() function is not available.
4678

4679 4680 4681
- Issue #13464: Add a readinto() method to http.client.HTTPResponse.  Patch
  by Jon Kuhn.

4682 4683 4684
- tarfile.py: Correctly detect bzip2 compressed streams with blocksizes
  other than 900k.

4685 4686
- Issue #13439: Fix many errors in turtle docstrings.

4687
- Issue #6715: Add a module 'lzma' for compression using the LZMA algorithm.
4688
  Thanks to Per Øyvind Karlsen for the initial implementation.
4689

4690 4691 4692
- Issue #13487: Make inspect.getmodule robust against changes done to
  sys.modules while it is iterating over it.

4693 4694 4695
- Issue #12618: Fix a bug that prevented py_compile from creating byte
  compiled files in the current directory.  Initial patch by Sjoerd de Vries.

4696 4697 4698
- Issue #13444: When stdout has been closed explicitly, we should not attempt
  to flush it at shutdown and print an error.

4699 4700 4701 4702
- Issue #12567: The curses module uses Unicode functions for Unicode arguments
  when it is linked to the ncurses library. It encodes also Unicode strings to
  the locale encoding instead of UTF-8.

4703 4704 4705 4706
- Issue #12856: Ensure child processes do not inherit the parent's random
  seed for filename generation in the tempfile module.  Patch by Brian
  Harring.

4707 4708 4709
- Issue #9957: SpooledTemporaryFile.truncate() now accepts an optional size
  parameter, as other file-like objects.  Patch by Ryan Kelly.

4710 4711 4712
- Issue #13458: Fix a memory leak in the ssl module when decoding a
  certificate with a subjectAltName.  Patch by Robert Xiao.

4713 4714
- Issue #13415: os.unsetenv() doesn't ignore errors anymore.

Giampaolo Rodola's avatar
Giampaolo Rodola committed
4715 4716 4717
- Issue #13245: sched.scheduler class constructor's timefunc and
  delayfunct parameters are now optional.
  scheduler.enter and scheduler.enterabs methods gained a new kwargs parameter.
4718
  Patch contributed by Chris Clark.
Giampaolo Rodola's avatar
Giampaolo Rodola committed
4719

4720 4721 4722 4723
- Issue #12328: Under Windows, refactor handling of Ctrl-C events and
  make _multiprocessing.win32.WaitForMultipleObjects interruptible when
  the wait_flag parameter is false.  Patch by sbt.

4724 4725 4726 4727 4728 4729
- Issue #13322: Fix BufferedWriter.write() to ensure that BlockingIOError is
  raised when the wrapped raw file is non-blocking and the write would block.
  Previous code assumed that the raw write() would raise BlockingIOError, but
  RawIOBase.write() is defined to returned None when the call would block.
  Patch by sbt.

4730 4731
- Issue #13358: HTMLParser now calls handle_data only once for each CDATA.

4732 4733 4734 4735
- Issue #4147: minidom's toprettyxml no longer adds whitespace around a text
  node when it is the only child of an element.  Initial patch by Dan
  Kenigsberg.

4736 4737 4738 4739
- Issue #13374: The Windows bytes API has been deprecated in the os module. Use
  Unicode filenames instead of bytes filenames to not depend on the ANSI code
  page anymore and to support any filename.

4740 4741
- Issue #13297: Use bytes type to send and receive binary data through XMLRPC.

4742 4743 4744
- Issue #6397: Support "/dev/poll" polling objects in select module,
  under Solaris & derivatives.

4745 4746 4747
- Issues #1745761, #755670, #13357, #12629, #1200313: HTMLParser now correctly
  handles non-valid attributes, including adjacent and unquoted attributes.

4748 4749
- Issue #13193: Fix distutils.filelist.FileList and packaging.manifest.Manifest
  under Windows.
Antoine Pitrou's avatar
Antoine Pitrou committed
4750

4751 4752
- Issue #13384: Remove unnecessary __future__ import in Lib/random.py

4753 4754
- Issue #13149: Speed up append-only StringIO objects.

4755 4756 4757
- Issue #13373: multiprocessing.Queue.get() could sometimes block indefinitely
  when called with a timeout.  Patch by Arnaud Ysmal.

4758 4759 4760
- Issue #13254: Fix Maildir initialization so that maildir contents
  are read correctly.

4761
- Issue #3067: locale.setlocale() now raises TypeError if the second
4762 4763
  argument is an invalid iterable. Its documentation and docstring
  were also updated. Initial patch by Jyrki Pulliainen.
4764

4765 4766
- Issue #13140: Fix the daemon_threads attribute of ThreadingMixIn.

4767 4768 4769
- Issue #13339: Fix compile error in posixmodule.c due to missing semicolon.
  Thanks to Robert Xiao.

4770 4771 4772
- Byte compilation in packaging is now isolated from the calling Python -B or
  -O options, instead of being disallowed under -B or buggy under -O.

4773
- Issue #10570: curses.putp() and curses.tparm() are now expecting a byte
4774
  string, instead of a Unicode string.
4775

4776 4777
- Issue #13295: http.server now produces valid HTML 4.01 strict.

4778 4779
- Issue #2892: preserve iterparse events in case of SyntaxError.

4780
- Issue #13287: urllib.request and urllib.error now contains an __all__
Éric Araujo's avatar
Éric Araujo committed
4781
  attribute to expose only relevant classes and functions.  Patch by Florent
4782
  Xicluna.
4783

4784 4785 4786 4787
- Issue #670664: Fix HTMLParser to correctly handle the content of
  ``<script>...</script>`` and ``<style>...</style>``.

- Issue #10817: Fix urlretrieve function to raise ContentTooShortError even
4788 4789
  when reporthook is None. Patch by Jyrki Pulliainen.

4790 4791 4792
- Fix the xmlrpc.client user agent to return something similar to
  urllib.request user agent: "Python-xmlrpc/3.3".

4793 4794 4795
- Issue #13293: Better error message when trying to marshal bytes using
  xmlrpc.client.

4796 4797
- Issue #13291: NameError in xmlrpc package.

4798 4799
- Issue #13258: Use callable() built-in in the standard library.

4800 4801 4802
- Issue #13273: fix a bug that prevented HTMLParser to properly detect some
  tags when strict=False.

4803 4804 4805
- Issue #11183: Add finer-grained exceptions to the ssl module, so that
  you don't have to inspect the exception's attributes in the common case.

4806
- Issue #13216: Add cp65001 codec, the Windows UTF-8 (CP_UTF8).
4807

Victor Stinner's avatar
Victor Stinner committed
4808
- Issue #13226: Add RTLD_xxx constants to the os module. These constants can be
4809 4810
  used with sys.setdlopenflags().

4811 4812 4813 4814
- Issue #10278: Add clock_getres(), clock_gettime() and CLOCK_xxx constants to
  the time module. time.clock_gettime(time.CLOCK_MONOTONIC) provides a
  monotonic clock

4815 4816 4817
- Issue #10332: multiprocessing: fix a race condition when a Pool is closed
  before all tasks have completed.

4818 4819
- Issue #13255: wrong docstrings in array module.

4820 4821
- Issue #8540: Remove deprecated Context._clamp attribute in Decimal module.

R David Murray's avatar
R David Murray committed
4822
- Issue #13235: Added DeprecationWarning to logging.warn() method and function.
4823

4824 4825
- Issue #9168: now smtpd is able to bind privileged port.

4826 4827 4828
- Issue #12529: fix cgi.parse_header issue on strings with double-quotes and
  semicolons together. Patch by Ben Darnell and Petri Lehtinen.

4829 4830 4831
- Issue #13227: functools.lru_cache() now has a option to distinguish
  calls with different argument types.

4832 4833
- Issue #6090: zipfile raises a ValueError when a document with a timestamp
  earlier than 1980 is provided. Patch contributed by Petri Lehtinen.
4834

4835 4836 4837 4838
- Issue #13150: sysconfig no longer parses the Makefile and config.h files
  when imported, instead doing it at build time.  This makes importing
  sysconfig faster and reduces Python startup time by 20%.

Ezio Melotti's avatar
Ezio Melotti committed
4839 4840
- Issue #12448: smtplib now flushes stdout while running ``python -m smtplib``
  in order to display the prompt correctly.
4841

4842
- Issue #12454: The mailbox module is now using ASCII, instead of the locale
R David Murray's avatar
R David Murray committed
4843
  encoding, to read and write .mh_sequences files.
4844

4845 4846
- Issue #13194: zlib.compressobj().copy() and zlib.decompressobj().copy() are
  now available on Windows.
4847

R David Murray's avatar
R David Murray committed
4848
- Issue #1673007: urllib.request now supports HEAD request via new method argument.
4849 4850
  Patch contributions by David Stanek, Patrick Westerhoff and Ezio Melotti.

4851 4852
- Issue #12386: packaging does not fail anymore when writing the RESOURCES
  file.
4853

4854 4855
- Issue #13158: Fix decoding and encoding of GNU tar specific base-256 number
  fields in tarfile.
4856

4857 4858
- Issue #13025: mimetypes is now reading MIME types using the UTF-8 encoding,
  instead of the locale encoding.
4859

4860 4861
- Issue #10653: On Windows, use strftime() instead of wcsftime() because
  wcsftime() doesn't format time zone correctly.
4862

4863 4864 4865
- Issue #13150: The tokenize module doesn't compile large regular expressions
  at startup anymore.

Éric Araujo's avatar
Éric Araujo committed
4866 4867
- Issue #11171: Fix distutils.sysconfig.get_makefile_filename when Python was
  configured with different prefix and exec-prefix.
4868

4869
- Issue #11254: Teach distutils and packaging to compile .pyc and .pyo files in
4870
  PEP 3147-compliant __pycache__ directories.
4871

Ned Deily's avatar
Ned Deily committed
4872 4873
- Issue #7367: Fix pkgutil.walk_paths to skip directories whose
  contents cannot be read.
4874

4875 4876 4877
- Issue #3163: The struct module gets new format characters 'n' and 'N'
  supporting C integer types ``ssize_t`` and ``size_t``, respectively.

4878 4879
- Issue #13099: Fix sqlite3.Cursor.lastrowid under a Turkish locale.
  Reported and diagnosed by Thomas Kluyver.
4880

4881 4882 4883
- Issue #13087: BufferedReader.seek() now always raises UnsupportedOperation
  if the underlying raw stream is unseekable, even if the seek could be
  satisfied using the internal buffer.  Patch by John O'Connor.
4884

4885 4886 4887
- Issue #7689: Allow pickling of dynamically created classes when their
  metaclass is registered with copyreg.  Patch by Nicolas M. Thiéry and Craig
  Citro.
4888

4889 4890 4891
- Issue #13034: When decoding some SSL certificates, the subjectAltName
  extension could be unreported.

4892 4893 4894
- Issue #12306: Expose the runtime version of the zlib C library as a constant,
  ZLIB_RUNTIME_VERSION, in the zlib module. Patch by Torsten Landschoff.

4895
- Issue #12959: Add collections.ChainMap to collections.__all__.
4896

4897 4898 4899
- Issue #8933: distutils' PKG-INFO files and packaging's METADATA files will
  now correctly report Metadata-Version: 1.1 instead of 1.0 if a Classifier or
  Download-URL field is present.
4900

4901 4902 4903
- Issue #12567: Add curses.unget_wch() function. Push a character so the next
  get_wch() will return it.

4904
- Issue #9561: distutils and packaging now writes egg-info files using UTF-8,
4905 4906
  instead of the locale encoding.

4907 4908 4909
- Issue #8286: The distutils command sdist will print a warning message instead
  of crashing when an invalid path is given in the manifest template.

4910 4911 4912 4913 4914
- Issue #12841: tarfile unnecessarily checked the existence of numerical user
  and group ids on extraction. If one of them did not exist the respective id
  of the current user (i.e. root) was used for the file and ownership
  information was lost.

Ezio Melotti's avatar
Ezio Melotti committed
4915 4916 4917
- Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape
  more than 128 entities.  Patch by Peter Otten.

4918 4919
- Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses.

4920 4921 4922 4923
- Issue #12494: On error, call(), check_call(), check_output() and
  getstatusoutput() functions of the subprocess module now kill the process,
  read its status (to avoid zombis) and close pipes.

Benjamin Peterson's avatar
Benjamin Peterson committed
4924 4925
- Issue #12720: Expose low-level Linux extended file attribute functions in os.

Éric Araujo's avatar
Éric Araujo committed
4926
- Issue #10946: The distutils commands bdist_dumb, bdist_wininst and bdist_msi
4927 4928
  now respect a --skip-build option given to bdist.  The packaging commands
  were fixed too.
Éric Araujo's avatar
Éric Araujo committed
4929

4930 4931 4932
- Issue #12847: Fix a crash with negative PUT and LONG_BINPUT arguments in
  the C pickle implementation.

4933 4934 4935
- Issue #11564: Avoid crashes when trying to pickle huge objects or containers
  (more than 2**31 items).  Instead, in most cases, an OverflowError is raised.

4936 4937 4938
- Issue #12287: Fix a stack corruption in ossaudiodev module when the FD is
  greater than FD_SETSIZE.

4939 4940 4941
- Issue #12839: Fix crash in zlib module due to version mismatch.
  Fix by Richard M. Tew.

4942 4943 4944
- Issue #9923: The mailcap module now correctly uses the platform path
  separator for the MAILCAP environment variable on non-POSIX platforms.

4945 4946 4947 4948
- Issue #12835: Follow up to #6560 that unconditionally prevents use of the
  unencrypted sendmsg/recvmsg APIs on SSL wrapped sockets. Patch by David
  Watson.

4949 4950 4951
- Issue #12803: SSLContext.load_cert_chain() now accepts a password argument
  to be used if the private key is encrypted.  Patch by Adam Simpkins.

4952 4953 4954
- Issue #11657: Fix sending file descriptors over 255 over a multiprocessing
  Pipe.

4955 4956 4957
- Issue #12811: tabnanny.check() now promptly closes checked files. Patch by
  Anthony Briggs.

4958 4959
- Issue #6560: The sendmsg/recvmsg API is now exposed by the socket module
  when provided by the underlying platform, supporting processing of
4960
  ancillary data in pure Python code. Patch by David Watson and Heiko Wundram.
4961

4962 4963 4964 4965
- Issue #12326: On Linux, sys.platform doesn't contain the major version
  anymore. It is now always 'linux', instead of 'linux2' or 'linux3' depending
  on the Linux version used to build Python.

4966 4967 4968
- Issue #12213: Fix a buffering bug with interleaved reads and writes that
  could appear on BufferedRandom streams.

4969 4970 4971
- Issue #12778: Reduce memory consumption when JSON-encoding a large
  container of many small objects.

4972 4973 4974
- Issue #12650: Fix a race condition where a subprocess.Popen could leak
  resources (FD/zombie) when killed at the wrong time.

4975 4976 4977
- Issue #12744: Fix inefficient representation of integers between 2**31 and
  2**63 on systems with a 64-bit C "long".

4978 4979 4980
- Issue #12646: Add an 'eof' attribute to zlib.Decompress, to make it easier to
  detect truncated input streams.

4981 4982 4983
- Issue #11513: Fix exception handling ``tarfile.TarFile.gzopen()`` when
  the file cannot be opened.

4984 4985 4986
- Issue #12687: Fix a possible buffering bug when unpickling text mode
  (protocol 0, mostly) pickles.

Senthil Kumaran's avatar
Senthil Kumaran committed
4987 4988
- Issue #10087: Fix the html output format of the calendar module.

4989 4990 4991
- Issue #13121: add support for inplace math operators to collections.Counter.

- Add support for unary plus and unary minus to collections.Counter.
4992

4993 4994
- Issue #12683: urlparse updated to include svn as schemes that uses relative
  paths. (svn from 1.5 onwards support relative path).
4995

4996 4997 4998 4999 5000
- Issue #12655: Expose functions from sched.h in the os module: sched_yield(),
  sched_setscheduler(), sched_getscheduler(), sched_setparam(),
  sched_get_min_priority(), sched_get_max_priority(), sched_rr_get_interval(),
  sched_getaffinity(), sched_setaffinity().

5001 5002
- Add ThreadError to threading.__all__.

5003 5004
- Issues #11104, #8688: Fix the behavior of distutils' sdist command with
  manually-maintained MANIFEST files.
5005

5006 5007 5008 5009
- Issue #11281: smtplib.STMP gets source_address parameter, which adds the
  ability to bind to specific source address on a machine with multiple
  interfaces. Patch by Paulo Scardine.

5010 5011
- Issue #12464: tempfile.TemporaryDirectory.cleanup() should not follow
  symlinks: fix it. Patch by Petri Lehtinen.
5012

Éric Araujo's avatar
Éric Araujo committed
5013 5014
- Issue #8887: "pydoc somebuiltin.somemethod" (or help('somebuiltin.somemethod')
  in Python code) now finds the doc of the method.
5015

5016
- Issue #10968: Remove indirection in threading.  The public names (Event,
5017
  Condition, etc.) used to be factory functions returning instances of hidden
5018 5019 5020
  classes (_Event, _Condition, etc.), because (if Guido recalls correctly) this
  code pre-dates the ability to subclass extension types.  It is now possible
  to inherit from these classes, without having to import the private
5021 5022
  underscored names like multiprocessing did.

5023 5024 5025
- Issue #9723: Add shlex.quote functions, to escape filenames and command
  lines.

5026 5027
- Issue #12603: Fix pydoc.synopsis() on files with non-negative st_mtime.

5028 5029 5030
- Issue #12514: Use try/finally to assure the timeit module restores garbage
  collections when it is done.

5031 5032 5033
- Issue #12607: In subprocess, fix issue where if stdin, stdout or stderr is
  given as a low fd, it gets overwritten.

5034 5035
- Issue #12576: Fix urlopen behavior on sites which do not send (or obfuscate)
  a ``Connection: close`` header.
5036

5037 5038
- Issue #12560: Build libpython.so on OpenBSD. Patch by Stefan Sperling.

5039 5040
- Issue #1813: Fix codec lookup under Turkish locales.

5041 5042 5043
- Issue #12591: Improve support of "universal newlines" in the subprocess
  module: the piped streams can now be properly read from or written to.

5044 5045 5046 5047
- Issue #12591: Allow io.TextIOWrapper to work with raw IO objects (without
  a read1() method), and add a *write_through* parameter to mandate
  unbuffered writes.

5048 5049
- Issue #10883: Fix socket leaks in urllib.request when using FTP.

5050 5051
- Issue #12592: Make Python build on OpenBSD 5 (and future major releases).

5052 5053
- Issue #12372: POSIX semaphores are broken on AIX: don't use them.

5054 5055 5056 5057 5058 5059
- Issue #12551: Provide a get_channel_binding() method on SSL sockets so as
  to get channel binding data for the current SSL session (only the
  "tls-unique" channel binding is implemented).  This allows the implementation
  of certain authentication mechanisms such as SCRAM-SHA-1-PLUS.  Patch by
  Jacek Konieczny.

5060 5061 5062
- Issue #665194: email.utils now has format_datetime and parsedate_to_datetime
  functions, allowing for round tripping of RFC2822 format dates.

5063 5064 5065 5066
- Issue #12571: Add a plat-linux3 directory mirroring the plat-linux2
  directory, so that "import DLFCN" and other similar imports work on
  Linux 3.0.

5067 5068 5069
- Issue #7484: smtplib no longer puts <> around addresses in VRFY and EXPN
  commands; they aren't required and in fact postfix doesn't support that form.

Benjamin Peterson's avatar
Benjamin Peterson committed
5070 5071 5072
- Issue #12273: Remove ast.__version__. AST changes can be accounted for by
  checking sys.version_info or sys._mercurial.

5073 5074 5075
- Silence spurious "broken pipe" tracebacks when shutting down a
  ProcessPoolExecutor.

5076 5077 5078
- Fix potential resource leaks in concurrent.futures.ProcessPoolExecutor
  by joining all queues and processes when shutdown() is called.

5079 5080 5081
- Issue #11603: Fix a crash when __str__ is rebound as __repr__.  Patch by
  Andreas Stührk.

5082 5083 5084
- Issue #11321: Fix a crash with multiple imports of the _pickle module when
  embedding Python.  Patch by Andreas Stührk.

5085 5086 5087
- Issue #6755: Add get_wch() method to curses.window class. Patch by Iñigo
  Serna.

5088 5089
- Add cgi.closelog() function to close the log file.

5090 5091
- Issue #12502: asyncore: fix polling loop with AF_UNIX sockets.

5092 5093 5094
- Issue #4376: ctypes now supports nested structures in a endian different than
  the parent structure. Patch by Vlad Riscutia.

5095 5096 5097
- Raise ValueError when attempting to set the _CHUNK_SIZE attribute of a
  TextIOWrapper to a huge value, not TypeError.

5098 5099 5100
- Issue #12504: Close file handles in a timely manner in packaging.database.
  This fixes a bug with the remove (uninstall) feature on Windows.

5101 5102 5103
- Issues #12169 and #10510: Factor out code used by various packaging commands
  to make HTTP POST requests, and make sure it uses CRLF.

5104 5105 5106 5107
- Issue #12016: Multibyte CJK decoders now resynchronize faster. They only
  ignore the first byte of an invalid byte sequence. For example,
  b'\xff\n'.decode('gb2312', 'replace') gives '\ufffd\n' instead of '\ufffd'.

5108 5109 5110 5111
- Issue #12459: time.sleep() now raises a ValueError if the sleep length is
  negative, instead of an infinite sleep on Windows or raising an IOError on
  Linux for example, to have the same behaviour on all platforms.

5112 5113 5114 5115
- Issue #12451: pydoc: html_getfile() now uses tokenize.open() to support
  Python scripts using a encoding different than UTF-8 (read the coding cookie
  of the script).

5116 5117 5118
- Issue #12493: subprocess: Popen.communicate() now also handles EINTR errors
  if the process has only one pipe.

5119 5120 5121
- Issue #12467: warnings: fix a race condition if a warning is emitted at
  shutdown, if globals()['__file__'] is None.

5122 5123 5124
- Issue #12451: pydoc: importfile() now opens the Python script in binary mode,
  instead of text mode using the locale encoding, to avoid encoding issues.

5125 5126 5127 5128
- Issue #12451: runpy: run_path() now opens the Python script in binary mode,
  instead of text mode using the locale encoding, to support other encodings
  than UTF-8 (scripts using the coding cookie).

5129 5130 5131
- Issue #12451: xml.dom.pulldom: parse() now opens files in binary mode instead
  of the text mode (using the locale encoding) to avoid encoding issues.

5132 5133 5134
- Issue #12147: Adjust the new-in-3.2 smtplib.send_message method for better
  conformance to the RFCs:  correctly handle Sender and Resent- headers.

5135 5136
- Issue #12352: Fix a deadlock in multiprocessing.Heap when a block is freed by
  the garbage collector while the Heap lock is held.
5137

R David Murray's avatar
R David Murray committed
5138
- Issue #12462: time.sleep() now immediately calls the (Python) signal handler
5139 5140 5141
  if it is interrupted by a signal, instead of having to wait until the next
  instruction.

5142 5143 5144
- Issue #12442: new shutil.disk_usage function, providing total, used and free
  disk space statistics.

5145 5146 5147 5148 5149
- Issue #12451: The XInclude default loader of xml.etree now decodes files from
  UTF-8 instead of the locale encoding if the encoding is not specified. It now
  also opens XML files for the parser in binary mode instead of the text mode
  to avoid encoding issues.

5150 5151 5152
- Issue #12451: doctest.debug_script() doesn't create a temporary file
  anymore to avoid encoding issues.

5153 5154 5155
- Issue #12451: pydoc.synopsis() now reads the encoding cookie if available,
  to read the Python script from the right encoding.

5156 5157 5158
- Issue #12451: distutils now opens the setup script in binary mode to read the
  encoding cookie, instead of opening it in UTF-8.

Ned Deily's avatar
Ned Deily committed
5159 5160 5161 5162
- Issue #9516: On Mac OS X, change Distutils to no longer globally attempt to
  check or set the MACOSX_DEPLOYMENT_TARGET environment variable for the
  interpreter process.  This could cause failures in non-Distutils subprocesses
  and was unreliable since tests or user programs could modify the interpreter
5163
  environment after Distutils set it.  Instead, have Distutils set the
Ned Deily's avatar
Ned Deily committed
5164 5165 5166 5167
  deployment target only in the environment of each build subprocess.  It is
  still possible to globally override the default by setting
  MACOSX_DEPLOYMENT_TARGET before launching the interpreter; its value must be
  greater or equal to the default value, the value with which the interpreter
5168
  was built.  Also, implement the same handling in packaging.
Ned Deily's avatar
Ned Deily committed
5169

5170 5171 5172
- Issue #12422: In the copy module, don't store objects that are their own copy
  in the memo dict.

5173 5174
- Issue #12303: Add sigwaitinfo() and sigtimedwait() to the signal module.

5175 5176 5177
- Issue #12404: Remove C89 incompatible code from mmap module. Patch by Akira
  Kitada.

5178 5179 5180
- Issue #1874: email now detects and reports as a defect the presence of
  any CTE other than 7bit, 8bit, or binary on a multipart.

5181 5182 5183
- Issue #12383: Fix subprocess module with env={}: don't copy the environment
  variables, start with an empty environment.

5184 5185 5186 5187
- Issue #11637: Fix support for importing packaging setup hooks from the
  project directory.

- Issue #6771: Moved the curses.wrapper function from the single-function
5188 5189 5190
  wrapper module into __init__, eliminating the module.  Since __init__ was
  already importing the function to curses.wrapper, there is no API change.

5191
- Issue #11584: email.header.decode_header no longer fails if the header
5192 5193
  passed to it is a Header object, and Header/make_header no longer fail
  if given binary unknown-8bit input.
5194

5195 5196 5197
- Issue #11700: mailbox proxy object close methods can now be called multiple
  times without error.

5198 5199
- Issue #11767: Correct file descriptor leak in mailbox's __getitem__ method.

5200 5201 5202 5203
- Issue #12133: AbstractHTTPHandler.do_open() of urllib.request closes the HTTP
  connection if its getresponse() method fails with a socket error. Patch
  written by Ezio Melotti.

5204 5205 5206
- Issue #12240: Allow multiple setup hooks in packaging's setup.cfg files.
  Original patch by Erik Bray.

5207 5208 5209
- Issue #9284: Allow inspect.findsource() to find the source of doctest
  functions.

5210 5211 5212 5213
- Issue #11595: Fix assorted bugs in packaging.util.cfg_to_args, a
  compatibility helper for the distutils-packaging transition.  Original patch
  by Erik Bray.

5214 5215 5216
- Issue #12287: In ossaudiodev, check that the device isn't closed in several
  methods.

Benjamin Peterson's avatar
Benjamin Peterson committed
5217
- Issue #12009: Fixed regression in netrc file comment handling.
5218

5219 5220 5221 5222
- Issue #12246: Warn and fail when trying to install a third-party project from
  an uninstalled Python (built in a source checkout).  Original patch by
  Tshepang Lekhonkhobe.

5223 5224
- Issue #10694: zipfile now ignores garbage at the end of a zipfile.

5225 5226
- Issue #12283: Fixed regression in smtplib quoting of leading dots in DATA.

5227 5228 5229
- Issue #10424: Argparse now includes the names of the missing required
  arguments in the missing arguments error message.

5230 5231 5232
- Issue #12168: SysLogHandler now allows NUL termination to be controlled using
  a new 'append_nul' attribute on the handler.

5233 5234 5235
- Issue #11583: Speed up os.path.isdir on Windows by using GetFileAttributes
  instead of os.stat.

5236 5237 5238
- Issue #12021: Make mmap's read() method argument optional. Patch by Petri
  Lehtinen.

5239 5240 5241 5242
- Issue #9205: concurrent.futures.ProcessPoolExecutor now detects killed
  children and raises BrokenProcessPool in such a situation.  Previously it
  would reliably freeze/deadlock.

5243
- Issue #12040: Expose a new attribute ``sentinel`` on instances of
Georg Brandl's avatar
Georg Brandl committed
5244 5245
  ``multiprocessing.Process``.  Also, fix Process.join() to not use polling
  anymore, when given a timeout.
5246

5247 5248 5249
- Issue #11893: Remove obsolete internal wrapper class ``SSLFakeFile`` in the
  smtplib module.  Patch by Catalin Iacob.

5250 5251 5252
- Issue #12080: Fix a Decimal.power() case that took an unreasonably long time
  to compute.

5253 5254 5255 5256
- Issue #12221: Remove __version__ attributes from pyexpat, pickle, tarfile,
  pydoc, tkinter, and xml.parsers.expat. This were useless version constants
  left over from the Mercurial transition

Raymond Hettinger's avatar
merge  
Raymond Hettinger committed
5257
- Named tuples now work correctly with vars().
5258

5259 5260 5261 5262
- Issue #12085: Fix an attribute error in subprocess.Popen destructor if the
  constructor has failed, e.g. because of an undeclared keyword argument. Patch
  written by Oleg Oshmyan.

5263
- Issue #12028: Make threading._get_ident() public, rename it to
5264
  threading.get_ident() and document it. This function was already used using
5265 5266
  _thread.get_ident().

5267 5268 5269
- Issue #12171: IncrementalEncoder.reset() of CJK codecs (multibytecodec) calls
  encreset() instead of decreset().

5270 5271
- Issue #12218: Removed wsgiref.egg-info.

5272
- Issue #12196: Add pipe2() to the os module.
5273

5274 5275 5276
- Issue #985064: Make plistlib more resilient to faulty input plists.
  Patch by Mher Movsisyan.

5277 5278 5279
- Issue #1625: BZ2File and bz2.decompress() now support multi-stream files.
  Initial patch by Nir Aides.

5280 5281
- Issue #12175: BufferedReader.read(-1) now calls raw.readall() if available.

5282 5283 5284
- Issue #12175: FileIO.readall() now only reads the file position and size
  once.

5285 5286 5287 5288 5289 5290
- Issue #12175: RawIOBase.readall() now returns None if read() returns None.

- Issue #12175: FileIO.readall() now raises a ValueError instead of an IOError
  if the file is closed.

- Issue #11109: New service_action method for BaseServer, used by ForkingMixin
5291
  class for cleanup. Initial Patch by Justin Warkentin.
5292 5293 5294

- Issue #12045: Avoid duplicate execution of command in
  ctypes.util._get_soname().  Patch by Sijin Joseph.
Senthil Kumaran's avatar
Senthil Kumaran committed
5295

5296 5297 5298
- Issue #10818: Remove the Tk GUI and the serve() function of the pydoc module,
  pydoc -g has been deprecated in Python 3.2 and it has a new enhanced web
  server.
5299

5300 5301 5302
- Issue #1441530: In imaplib, read the data in one chunk to speed up large
  reads and simplify code.

5303 5304 5305
- Issue #12070: Fix the Makefile parser of the sysconfig module to handle
  correctly references to "bogus variable" (e.g. "prefix=$/opt/python").

5306 5307 5308 5309
- Issue #12100: Don't reset incremental encoders of CJK codecs at each call to
  their encode() method anymore, but continue to call the reset() method if the
  final argument is True.

5310 5311 5312
- Issue #12049: Add RAND_bytes() and RAND_pseudo_bytes() functions to the ssl
  module.

5313 5314 5315
- Issue #6501: os.device_encoding() returns None on Windows if the application
  has no console.

5316 5317
- Issue #12105: Add O_CLOEXEC to the os module.

5318 5319 5320 5321
- Issue #12079: Decimal('Infinity').fma(Decimal('0'), (3.91224318126786e+19+0j))
  now raises TypeError (reflecting the invalid type of the 3rd argument) rather
  than Decimal.InvalidOperation.

5322 5323 5324
- Issue #12124: zipimport doesn't keep a reference to zlib.decompress() anymore
  to be able to unload the module.

5325 5326
- Add the packaging module, an improved fork of distutils (also known as
  distutils2).
5327

5328 5329 5330
- Issue #12065: connect_ex() on an SSL socket now returns the original errno
  when the socket's timeout expires (it used to return None).

5331 5332 5333 5334
- Issue #8809: The SMTP_SSL constructor and SMTP.starttls() now support
  passing a ``context`` argument pointing to an ssl.SSLContext instance.
  Patch by Kasun Herath.

5335 5336 5337
- Issue #9516: Issue #9516: avoid errors in sysconfig when MACOSX_DEPLOYMENT_TARGET
  is set in shell.

5338 5339 5340 5341 5342
- Issue #8650: Make zlib module 64-bit clean. compress(), decompress() and
  their incremental counterparts now raise OverflowError if given an input
  larger than 4GB, instead of silently truncating the input and returning
  an incorrect result.

5343 5344 5345
- Issue #12050: zlib.decompressobj().decompress() now clears the unconsumed_tail
  attribute when called without a max_length argument.

5346 5347 5348 5349 5350
- Issue #12062: Fix a flushing bug when doing a certain type of I/O sequence
  on a file opened in read+write mode (namely: reading, seeking a bit forward,
  writing, then seeking before the previous write but still within buffered
  data, and writing again).

5351 5352 5353
- Issue #9971: Write an optimized implementation of BufferedReader.readinto().
  Patch by John O'Connor.

5354 5355 5356 5357
- Issue #11799: urllib.request Authentication Handlers will raise a ValueError
  when presented with an unsupported Authentication Scheme. Patch contributed
  by Yuval Greenfield.

5358 5359 5360 5361 5362
- Issue #10419, #6011: build_scripts command of distutils handles correctly
  non-ASCII path (path to the Python executable). Open and write the script in
  binary mode, but ensure that the shebang is decodable from UTF-8 and from the
  encoding of the script.

5363 5364 5365
- Issue #8498: In socket.accept(), allow to specify 0 as a backlog value in
  order to accept exactly one connection.  Patch by Daniel Evers.

5366 5367 5368
- Issue #12011: signal.signal() and signal.siginterrupt() raise an OSError,
  instead of a RuntimeError: OSError has an errno attribute.

R David Murray's avatar
R David Murray committed
5369 5370 5371
- Issue #3709: add a flush_headers method to BaseHTTPRequestHandler, which
  manages the sending of headers to output stream and flushing the internal
  headers buffer. Patch contribution by Andrew Schaaf
5372

5373 5374
- Issue #11743: Rewrite multiprocessing connection classes in pure Python.

5375 5376
- Issue #11164: Stop trying to use _xmlplus in the xml module.

5377 5378 5379
- Issue #11888: Add log2 function to math module. Patch written by Mark
  Dickinson.

5380 5381
- Issue #12012: ssl.PROTOCOL_SSLv2 becomes optional.

5382 5383 5384 5385
- Issue #8407: The signal handler writes the signal number as a single byte
  instead of a nul byte into the wakeup file descriptor. So it is possible to
  wait more than one signal and know which signals were raised.

5386 5387 5388
- Issue #8407: Add pthread_kill(), sigpending() and sigwait() functions to the
  signal module.

5389 5390 5391
- Issue #11927: SMTP_SSL now uses port 465 by default as documented.  Patch
  by Kasun Herath.

Giampaolo Rodola's avatar
Giampaolo Rodola committed
5392
- Issue #12002: ftplib's abort() method raises TypeError.
5393

Ezio Melotti's avatar
Ezio Melotti committed
5394
- Issue #11916: Add a number of MacOSX specific definitions to the errno module.
5395 5396
  Patch by Pierre Carrier.

5397
- Issue #11999: fixed sporadic sync failure mailbox.Maildir due to its trying to
5398 5399 5400
  detect mtime changes by comparing to the system clock instead of to the
  previous value of the mtime.

5401 5402
- Issue #11072: added MLSD command (RFC-3659) support to ftplib.

5403 5404 5405 5406
- Issue #8808: The IMAP4_SSL constructor now allows passing an SSLContext
  parameter to control parameters of the secure channel.  Patch by Sijin
  Joseph.

5407 5408 5409
- ntpath.samefile failed to notice that "a.txt" and "A.TXT" refer to the same
  file on Windows XP. As noticed in issue #10684.

5410 5411 5412 5413
- Issue #12000: When a SSL certificate has a subjectAltName without any
  dNSName entry, ssl.match_hostname() should use the subject's commonName.
  Patch by Nicolas Bareil.

5414 5415 5416 5417
- Issue #10775: assertRaises, assertRaisesRegex, assertWarns, and
  assertWarnsRegex now accept a keyword argument 'msg' when used as context
  managers.  Initial patch by Winston Ewert.

Ronald Oussoren's avatar
Ronald Oussoren committed
5418 5419 5420 5421
- Issue #10684: shutil.move used to delete a folder on case insensitive
  filesystems when the source and destination name where the same except
  for the case.

5422 5423 5424 5425
- Issue #11647: objects created using contextlib.contextmanager now support
  more than one call to the function when used as a decorator. Initial patch
  by Ysj Ray.

5426 5427 5428
- Issue #11930: Removed deprecated time.accept2dyear variable.
  Removed year >= 1000 restriction from datetime.strftime.

5429 5430
- logging: don't define QueueListener if Python has no thread support.

5431 5432
- functools.cmp_to_key() now works with collections.Hashable().

5433 5434 5435
- Issue #11277: mmap.mmap() calls fcntl(fd, F_FULLFSYNC) on Mac OS X to get
  around a mmap bug with sparse files. Patch written by Steffen Daode Nurpmeso.

5436 5437 5438
- Issue #8407: Add signal.pthread_sigmask() function to fetch and/or change the
  signal mask of the calling thread.

5439 5440 5441 5442 5443
- Issue #11858: configparser.ExtendedInterpolation expected lower-case section
  names.

- Issue #11324: ConfigParser(interpolation=None) now works correctly.

5444 5445 5446
- Issue #11811: ssl.get_server_certificate() is now IPv6-compatible.  Patch
  by Charles-François Natali.

5447 5448 5449
- Issue #11763: don't use difflib in TestCase.assertMultiLineEqual if the
  strings are too long.

5450 5451
- Issue #11236: getpass.getpass responds to ctrl-c or ctrl-z on terminal.

5452 5453
- Issue #11856: Speed up parsing of JSON numbers.

5454
- Issue #11005: threading.RLock()._release_save() raises a RuntimeError if the
5455 5456
  lock was not acquired.

5457 5458 5459
- Issue #11258: Speed up ctypes.util.find_library() under Linux by a factor
  of 5 to 10.  Initial patch by Jonas H.

5460 5461 5462
- Issue #11382: Trivial system calls, such as dup() or pipe(), needn't
  release the GIL.  Patch by Charles-François Natali.

5463 5464 5465
- Issue #11223: Add threading._info() function providing informations about
  the thread implementation.

5466 5467 5468
- Issue #11731: simplify/enhance email parser/generator API by introducing
  policy objects.

5469 5470 5471 5472
- Issue #11768: The signal handler of the signal module only calls
  Py_AddPendingCall() for the first signal to fix a deadlock on reentrant or
  parallel calls. PyErr_SetInterrupt() writes also into the wake up file.

5473 5474
- Issue #11492: fix several issues with header folding in the email package.

5475 5476
- Issue #11852: Add missing imports and update tests.

5477 5478 5479
- Issue #11875: collections.OrderedDict's __reduce__ was temporarily
  mutating the object instead of just working on a copy.

5480
- Issue #11467: Fix urlparse behavior when handling urls which contains scheme
5481 5482
  specific part only digits. Patch by Santoso Wijaya.

5483 5484
- collections.Counter().copy() now works correctly for subclasses.

5485 5486 5487
- Issue #11474: Fix the bug with url2pathname() handling of '/C|/' on Windows.
  Patch by Santoso Wijaya.

5488 5489
- Issue #11684: complete email.parser bytes API by adding BytesHeaderParser.

5490 5491
- The bz2 module now handles 4GiB+ input buffers correctly.

Ezio Melotti's avatar
Ezio Melotti committed
5492 5493
- Issue #9233: Fix json.loads('{}') to return a dict (instead of a list), when
  _json is not available.
5494

Ezio Melotti's avatar
Ezio Melotti committed
5495
- Issue #11830: Remove unnecessary introspection code in the decimal module.
5496 5497

- Issue #11703: urllib2.geturl() does not return correct url when the original
5498
  url contains #fragment.
5499

5500 5501 5502
- Issue #10019: Fixed regression in json module where an indent of 0 stopped
  adding newlines and acted instead like 'None'.

5503 5504 5505
- Issue #11186: pydoc ignores a module if its name contains a surrogate
  character in the index of modules.

5506 5507 5508
- Issue #11815: Use a light-weight SimpleQueue for the result queue in
  concurrent.futures.ProcessPoolExecutor.

brian.curtin's avatar
brian.curtin committed
5509 5510 5511
- Issue #5162: Treat services like frozen executables to allow child spawning
  from multiprocessing.forking on Windows.

5512 5513 5514 5515
- logging.basicConfig now supports an optional 'handlers' argument taking an
  iterable of handlers to be added to the root logger. Additional parameter
  checks were also added to basicConfig.

5516 5517
- Issue #11814: Fix likely typo in multiprocessing.Pool._terminate().

5518 5519 5520
- Issue #11747: Fix range formatting in difflib.context_diff() and
  difflib.unified_diff().

5521 5522 5523 5524
- Issue #8428: Fix a race condition in multiprocessing.Pool when terminating
  worker processes: new processes would be spawned while the pool is being
  shut down.  Patch by Charles-François Natali.

5525 5526
- Issue #2650: re.escape() no longer escapes the '_'.

5527 5528 5529 5530
- Issue #11757: select.select() now raises ValueError when a negative timeout
  is passed (previously, a select.error with EINVAL would be raised).  Patch
  by Charles-François Natali.

5531 5532
- Issue #7311: fix html.parser to accept non-ASCII attribute values.

Georg Brandl's avatar
Georg Brandl committed
5533
- Issue #11605: email.parser.BytesFeedParser was incorrectly converting
Éric Araujo's avatar
Éric Araujo committed
5534
  multipart subparts with an 8-bit CTE into unicode instead of preserving the
Georg Brandl's avatar
Georg Brandl committed
5535
  bytes.
5536

Éric Araujo's avatar
Éric Araujo committed
5537 5538
- Issue #1690608: email.util.formataddr is now RFC 2047 aware:  it now has a
  charset parameter that defaults to utf-8 and is used as the charset for RFC
5539 5540
  2047 encoding when the realname contains non-ASCII characters.

5541 5542
- Issue #10963: Ensure that subprocess.communicate() never raises EPIPE.

5543 5544 5545
- Issue #10791: Implement missing method GzipFile.read1(), allowing GzipFile
  to be wrapped in a TextIOWrapper.  Patch by Nadeem Vawda.

5546 5547 5548
- Issue #11707: Added a fast C version of functools.cmp_to_key().
  Patch by Filip Gruszczyński.

5549 5550 5551
- Issue #11688: Add sqlite3.Connection.set_trace_callback().  Patch by
  Torsten Landschoff.

5552 5553 5554
- Issue #11746: Fix SSLContext.load_cert_chain() to accept elliptic curve
  private keys.

5555 5556 5557 5558
- Issue #5863: Rewrite BZ2File in pure Python, and allow it to accept
  file-like objects using a new ``fileobj`` constructor argument.  Patch by
  Nadeem Vawda.

5559 5560
- unittest.TestCase.assertSameElements has been removed.

5561 5562 5563
- sys.getfilesystemencoding() raises a RuntimeError if initfsencoding() was not
  called yet: detect bootstrap (startup) issues earlier.

5564 5565
- Issue #11393: Add the new faulthandler module.

5566 5567
- Issue #11618: Fix the timeout logic in threading.Lock.acquire() under Windows.

5568 5569 5570
- Removed the 'strict' argument to email.parser.Parser, which has been
  deprecated since Python 2.4.

5571 5572 5573
- Issue #11256: Fix inspect.getcallargs on functions that take only keyword
  arguments.

5574 5575
- Issue #11696: Fix ID generation in msilib.

5576 5577 5578
- itertools.accumulate now supports an optional *func* argument for
  a user-supplied binary function.

5579 5580
- Issue #11692: Remove unnecessary demo functions in subprocess module.

5581 5582 5583
- Issue #9696: Fix exception incorrectly raised by xdrlib.Packer.pack_int when
  trying to pack a negative (in-range) integer.

5584 5585 5586 5587
- Issue #11675: multiprocessing.[Raw]Array objects created from an integer size
  are now zeroed on creation.  This matches the behaviour specified by the
  documentation.

Martin v. Löwis's avatar
Martin v. Löwis committed
5588
- Issue #7639: Fix short file name generation in bdist_msi
5589

5590 5591 5592
- Issue #11635: Don't use polling in worker threads and processes launched by
  concurrent.futures.

5593 5594 5595 5596
- Issue #6811: Allow importlib to change a code object's co_filename attribute
  to match the path to where the source code currently is, not where the code
  object originally came from.

5597 5598
- Issue #8754: Have importlib use the repr of a module name in error messages.

5599 5600 5601
- Issue #11591: Prevent "import site" from modifying sys.path when python
  was started with -S.

5602 5603 5604 5605 5606
- collections.namedtuple() now adds a _source attribute to the generated
  class.  This make the source more accessible than the outdated
  "verbose" option which prints to stdout but doesn't make the source
  string available.

5607 5608 5609
- Issue #11371: Mark getopt error messages as localizable.  Patch by Filip
  Gruszczyński.

5610 5611
- Issue #11333: Add __slots__ to collections ABCs.

5612
- Issue #11628: cmp_to_key generated class should use __slots__.
5613

5614 5615 5616
- Issue #11666: let help() display named tuple attributes and methods
  that start with a leading underscore.

Guido van Rossum's avatar
Guido van Rossum committed
5617 5618 5619
- Issue #11662: Make urllib and urllib2 ignore redirections if the
  scheme is not HTTP, HTTPS or FTP (CVE-2011-1521).

5620 5621 5622
- Issue #5537: Fix time2isoz() and time2netscape() functions of
  httplib.cookiejar for expiration year greater than 2038 on 32-bit systems.

5623 5624
- Issue #4391: Use proper gettext plural forms in optparse.

5625 5626
- Issue #11127: Raise a TypeError when trying to pickle a socket object.

5627
- Issue #11563: ``Connection: close`` header is sent by requests using URLOpener
Senthil Kumaran's avatar
Senthil Kumaran committed
5628 5629 5630
  class which helps in closing of sockets after connection is over. Patch
  contributions by Jeff McNeil and Nadeem Vawda.

5631 5632 5633
- Issue #11459: A ``bufsize`` value of 0 in subprocess.Popen() really creates
  unbuffered pipes, such that select() works properly on them.

5634 5635
- Issue #5421: Fix misleading error message when one of socket.sendto()'s
  arguments has the wrong type.  Patch by Nikita Vetoshkin.
5636

5637
- Issue #10812: Add some extra posix functions to the os module.
5638 5639 5640 5641

- Issue #10979: unittest stdout buffering now works with class and module
  setup and teardown.

5642 5643 5644
- Issue #11243: fix the parameter querying methods of Message to work if
  the headers contain un-encoded non-ASCII data.

5645 5646 5647
- Issue #11401: fix handling of headers with no value; this fixes a regression
  relative to Python2 and the result is now the same as it was in Python2.

5648 5649 5650 5651
- Issue #9298: base64 bodies weren't being folded to line lengths less than 78,
  which was a regression relative to Python2.  Unlike Python2, the last line
  of the folded body now ends with a carriage return.

Nick Coghlan's avatar
Nick Coghlan committed
5652
- Issue #11560: shutil.unpack_archive now correctly handles the format
Nick Coghlan's avatar
Nick Coghlan committed
5653 5654
  parameter. Patch by Evan Dandrea.

5655 5656
- Issue #5870: Add `subprocess.DEVNULL` constant.

5657
- Issue #11133: fix two cases where inspect.getattr_static can trigger code
5658
  execution. Patch by Andreas Stührk.
5659

5660 5661 5662 5663
- Issue #11569: use absolute path to the sysctl command in multiprocessing to
  ensure that it will be found regardless of the shell PATH. This ensures
  that multiprocessing.cpu_count works on default installs of MacOSX.

5664 5665 5666 5667
- Issue #11501: disutils.archive_utils.make_zipfile no longer fails if zlib is
  not installed. Instead, the zipfile.ZIP_STORED compression is used to create
  the ZipFile. Patch by Natalia B. Bidart.

5668
- Issue #11289: `smtp.SMTP` class is now a context manager so it can be used
5669 5670
  in a `with` statement.  Contributed by Giampaolo Rodola.

5671 5672 5673
- Issue #11554: Fixed support for Japanese codecs; previously the body output
  encoding was not done if euc-jp or shift-jis was specified as the charset.

5674 5675 5676
- Issue #11407: `TestCase.run` returns the result object used or created.
  Contributed by Janathan Hartley.

5677
- Issue #11500: Fixed a bug in the OS X proxy bypass code for fully qualified
Antoine Pitrou's avatar
Antoine Pitrou committed
5678
  IP addresses in the proxy exception list.
5679

5680 5681 5682 5683
- Issue #11491: dbm.error is no longer raised when dbm.open is called with
  the "n" as the flag argument and the file exists. The behavior matches
  the documentation and general logic.

Éric Araujo's avatar
Éric Araujo committed
5684
- Issue #1162477: Postel Principle adjustment to email date parsing: handle the
5685 5686
  fact that some non-compliant MUAs use '.' instead of ':' in time specs.

5687 5688 5689
- Issue #11131: Fix sign of zero in decimal.Decimal plus and minus
  operations when the rounding mode is ROUND_FLOOR.

5690 5691
- Issue #9935: Speed up pickling of instances of user-defined classes.

5692 5693 5694
- Issue #5622: Fix curses.wrapper to raise correct exception if curses
  initialization fails.

5695 5696 5697
- Issue #11408: In threading.Lock.acquire(), only call gettimeofday() when
  really necessary.  Patch by Charles-François Natali.

5698 5699 5700 5701
- Issue #11391: Writing to a mmap object created with
  ``mmap.PROT_READ|mmap.PROT_EXEC`` would segfault instead of raising a
  TypeError.  Patch by Charles-François Natali.

5702 5703
- Issue #9795: add context manager protocol support for nntplib.NNTP class.

5704 5705 5706 5707
- Issue #11306: mailbox in certain cases adapts to an inability to open
  certain files in read-write mode.  Previously it detected this by
  checking for EACCES, now it also checks for EROFS.

5708 5709 5710
- Issue #11265: asyncore now correctly handles EPIPE, EBADF and EAGAIN errors
  on accept(), send() and recv().

5711 5712
- Issue #11377: Deprecate platform.popen() and reimplement it with os.popen().

5713 5714
- Issue #8513: On UNIX, subprocess supports bytes command string.

5715 5716
- Issue #10866: Add socket.sethostname().  Initial patch by Ross Lagerwall.

5717 5718
- Issue #11140: Lock.release() now raises a RuntimeError when attempting
  to release an unacquired lock, as claimed in the threading documentation.
Antoine Pitrou's avatar
Antoine Pitrou committed
5719
  The _thread.error exception is now an alias of RuntimeError.  Patch by
5720
  Filip Gruszczyński.  Patch for _dummy_thread by Aymeric Augustin.
5721

5722
- Issue #8594: ftplib now provides a source_address parameter to specify which
5723 5724
  (address, port) to bind to before connecting.

5725 5726 5727
- Issue #11326: Add the missing connect_ex() implementation for SSL sockets,
  and make it work for non-blocking connects.

5728 5729
- Issue #11297: Add collections.ChainMap().

5730
- Issue #10755: Add the posix.flistdir() function.  Patch by Ross Lagerwall.
5731

Georg Brandl's avatar
Georg Brandl committed
5732 5733
- Issue #4761: Add the ``*at()`` family of functions (openat(), etc.) to the
  posix module.  Patch by Ross Lagerwall.
5734

5735 5736 5737
- Issue #7322: Trying to read from a socket's file-like object after a timeout
  occurred now raises an error instead of silently losing data.

5738
- Issue #11291: poplib.POP no longer suppresses errors on quit().
5739

5740
- Issue #11177: asyncore's create_socket() arguments can now be omitted.
5741

5742 5743 5744 5745 5746
- Issue #6064: Add a ``daemon`` keyword argument to the threading.Thread
  and multiprocessing.Process constructors in order to override the
  default behaviour of inheriting the daemonic property from the current
  thread/process.

5747 5748 5749
- Issue #10956: Buffered I/O classes retry reading or writing after a signal
  has arrived and the handler returned successfully.

5750 5751
- Issue #10784: New os.getpriority() and os.setpriority() functions.

5752 5753 5754 5755
- Issue #11114: Fix catastrophic performance of tell() on text files (up
  to 1000x faster in some cases).  It is still one to two order of magnitudes
  slower than binary tell().

5756
- Issue #10882: Add os.sendfile function.
5757

5758 5759 5760
- Issue #10868: Allow usage of the register method of an ABC as a class
  decorator.

5761 5762 5763 5764
- Issue #11224: Fixed a regression in tarfile that affected the file-like
  objects returned by TarFile.extractfile() regarding performance, memory
  consumption and failures with the stream interface.

5765 5766 5767 5768
- Issue #10924: Adding salt and Modular Crypt Format to crypt library.
  Moved old C wrapper to _crypt, and added a Python wrapper with
  enhanced salt generation and simpler API for password generation.

5769 5770
- Issue #11074: Make 'tokenize' so it can be reloaded.

5771 5772 5773 5774 5775
- Issue #11085: Moved collections abstract base classes into a separate
  module called collections.abc, following the pattern used by importlib.abc.
  For backwards compatibility, the names are imported into the collections
  module.

5776 5777 5778 5779
- Issue #4681: Allow mmap() to work on file sizes and offsets larger than
  4GB, even on 32-bit builds.  Initial patch by Ross Lagerwall, adapted for
  32-bit Windows.

5780 5781 5782
- Issue #11169: compileall module uses repr() to format filenames and paths to
  escape surrogate characters and show spaces.

5783
- Issue #11089: Fix performance issue limiting the use of ConfigParser()
5784
  with large config files.
5785

5786 5787 5788
- Issue #10276: Fix the results of zlib.crc32() and zlib.adler32() on buffers
  larger than 4GB.  Patch by Nadeem Vawda.

5789 5790
- Issue #11388: Added a clear() method to MutableSequence

5791 5792 5793
- Issue #11174: Add argparse.MetavarTypeHelpFormatter, which uses type names
  for the names of optional and positional arguments in help messages.

5794 5795
- Issue #9348: Raise an early error if argparse nargs and metavar don't match.

5796 5797
- Issue #9026: Fix order of argparse sub-commands in help messages.

5798 5799
- Issue #9347: Fix formatting for tuples in argparse type= error messages.

5800 5801 5802
- Issue #12191: Added shutil.chown() to change user and/or group owner of a
  given path also specifying their names.

5803 5804 5805
- Issue #13988: The _elementtree accelerator is used whenever available.
  Now xml.etree.cElementTree becomes a deprecated alias to ElementTree.

5806 5807 5808
Build
-----

Martin v. Löwis's avatar
Martin v. Löwis committed
5809 5810
- Issue #6807: Run msisupport.mak earlier.

Martin v. Löwis's avatar
Martin v. Löwis committed
5811 5812
- Issue #10580: Minor grammar change in Windows installer.

5813 5814
- Issue #13326: Clean __pycache__ directories correctly on OpenBSD.

5815 5816
- PEP 393: the configure option --with-wide-unicode is removed.

5817 5818 5819
- Issue #12852: Set _XOPEN_SOURCE to 700, instead of 600, to get POSIX 2008
  functions on OpenBSD (e.g. fdopendir).

5820 5821 5822 5823
- Issue #11863: Remove support for legacy systems deprecated in Python 3.2
  (following PEP 11).  These systems are systems using Mach C Threads,
  SunOS lightweight processes, GNU pth threads and IRIX threads.

5824 5825
- Issue #8746: Correct faulty configure checks so that os.chflags() and
  os.lchflags() are once again built on systems that support these
Georg Brandl's avatar
Georg Brandl committed
5826
  functions (BSD and OS X).  Also add new stat file flags for OS X
5827 5828
  (UF_HIDDEN and UF_COMPRESSED).

5829
- Issue #10645: Installing Python no longer creates a
5830 5831
  Python-X.Y.Z-pyX.Y.egg-info file in the lib-dynload directory.

5832 5833 5834
- Do not accidentally include the directory containing sqlite.h twice when
  building sqlite3.

5835 5836 5837 5838
- Issue #11217: For 64-bit/32-bit Mac OS X universal framework builds,
  ensure "make install" creates symlinks in --prefix bin for the "-32"
  files in the framework bin directory like the installer does.

5839
- Issue #11347: Use --no-as-needed when linking libpython3.so.
5840

Thomas Wouters's avatar
Thomas Wouters committed
5841
- Issue #11411: Fix 'make DESTDIR=' with a relative destination.
Georg Brandl's avatar
Georg Brandl committed
5842

5843 5844
- Issue #11268: Prevent Mac OS X Installer failure if Documentation
  package had previously been installed.
5845

5846
- Issue #11495: OSF support is eliminated. It was deprecated in Python 3.2.
5847

5848 5849 5850
IDLE
----

5851 5852 5853 5854 5855 5856 5857 5858 5859 5860 5861 5862 5863 5864 5865 5866 5867 5868 5869 5870 5871 5872 5873 5874 5875 5876 5877 5878 5879 5880 5881 5882 5883 5884 5885 5886 5887 5888 5889 5890 5891 5892 5893 5894 5895 5896 5897 5898 5899 5900 5901 5902
- Issue #14409: IDLE now properly executes commands in the Shell window
  when it cannot read the normal config files on startup and
  has to use the built-in default key bindings.
  There was previously a bug in one of the defaults.

- IDLE can be launched as python -m idlelib

- Issue #3573: IDLE hangs when passing invalid command line args
  (directory(ies) instead of file(s)) (Patch by Guilherme Polo)

- Issue #14200: IDLE shell crash on printing non-BMP unicode character.

- Issue #5219: Prevent event handler cascade in IDLE.

- Issue #964437: Make IDLE help window non-modal.
  Patch by Guilherme Polo and Roger Serwy.

- Issue #13933: IDLE auto-complete did not work with some imported
  module, like hashlib.  (Patch by Roger Serwy)

- Issue #13506: Add '' to path for IDLE Shell when started and restarted with Restart Shell.
  Original patches by Marco Scataglini and Roger Serwy.

- Issue #4625: If IDLE cannot write to its recent file or breakpoint files,
  display a message popup and continue rather than crash.  Original patch by
  Roger Serwy.

- Issue #8641: Update IDLE 3 syntax coloring to recognize b".." and not u"..".
  Patch by Tal Einat.

- Issue #13296: Fix IDLE to clear compile __future__ flags on shell restart.
  (Patch by Roger Serwy)

- Issue #9871: Prevent IDLE 3 crash when given byte stings
  with invalid hex escape sequences, like b'\x0'.
  (Original patch by Claudiu Popa.)

- Issue #12636: IDLE reads the coding cookie when executing a Python script.

- Issue #12540: Prevent zombie IDLE processes on Windows due to changes
  in os.kill().

- Issue #12590: IDLE editor window now always displays the first line
  when opening a long file.  With Tk 8.5, the first line was hidden.

- Issue #11088: don't crash when using F5 to run a script in IDLE on MacOSX
  with Tk 8.5.

- Issue #1028: Tk returns invalid Unicode null in %A: UnicodeDecodeError.
  With Tk < 8.5 _tkinter.c:PythonCmd() raised UnicodeDecodeError, caused
  IDLE to exit.  Converted to valid Unicode null in PythonCmd().

5903 5904
- Issue #11718: IDLE's open module dialog couldn't find the __init__.py
  file in a package.
5905

5906 5907 5908
Tools/Demos
-----------

5909 5910 5911
- Issue #14053: patchcheck.py ("make patchcheck") now works with MQ patches.
  Patch by Francisco Martín Brugué.

5912 5913 5914 5915 5916
- Issue #13930: 2to3 is now able to write its converted output files to another
  directory tree as well as copying unchanged files and altering the file
  suffix.  See its new -o, -W and --add-suffix options.  This makes it more
  useful in many automated code translation workflows.

5917 5918 5919
- Issue #13628: python-gdb.py is now able to retrieve more frames in the Python
  traceback if Python is optimized.

5920 5921 5922
- Issue #11996: libpython (gdb), replace "py-bt" command by "py-bt-full" and
  add a smarter "py-bt" command printing a classic Python traceback.

5923 5924
- Issue #11179: Make ccbench work under Python 3.1 and 2.7 again.

5925 5926
- Issue #10639: reindent.py no longer converts newlines and will raise
  an error if attempting to convert a file with mixed newlines.
5927
  "--newline" option added to specify new line character.
5928

Ezio Melotti's avatar
Ezio Melotti committed
5929 5930
Extension Modules
-----------------
5931

5932 5933 5934 5935
- Issue #16847: Fixed improper use of _PyUnicode_CheckConsistency() in
  non-pydebug builds. Several extension modules now compile cleanly when
  assert()s are enabled in standard builds (-DDEBUG flag).

5936 5937 5938
- Issue #13840: The error message produced by ctypes.create_string_buffer
  when given a Unicode string has been fixed.

5939 5940 5941
- Issue #9975: socket: Fix incorrect use of flowinfo and scope_id. Patch by
  Vilmos Nebehaj.

5942 5943
- Issue #7777: socket: Add Reliable Datagram Sockets (PF_RDS) support.

5944 5945 5946
- Issue #13159: FileIO and BZ2Compressor/BZ2Decompressor now use a linear-time
  buffer growth strategy instead of a quadratic-time one.

5947 5948 5949
- Issue #10141: socket: Add SocketCAN (PF_CAN) support. Initial patch by
  Matthias Fuchs, updated by Tiago Gonçalves.

5950 5951 5952 5953
- Issue #13070: Fix a crash when a TextIOWrapper caught in a reference cycle
  would be finalized after the reference to its underlying BufferedRWPair's
  writer got cleared by the GC.

5954 5955
- Issue #12881: ctypes: Fix segfault with large structure field names.

5956 5957 5958
- Issue #13058: ossaudiodev: fix a file descriptor leak on error. Patch by
  Thomas Jarosch.

5959 5960 5961
- Issue #13013: ctypes: Fix a reference leak in PyCArrayType_from_ctype.
  Thanks to Suman Saha for finding the bug and providing a patch.

5962 5963 5964
- Issue #13022: Fix: _multiprocessing.recvfd() doesn't check that
  file descriptor was actually received.

5965 5966 5967
- Issue #1172711: Add 'long long' support to the array module.
  Initial patch by Oren Tirosh and Hirokazu Yamamoto.

5968 5969 5970
- Issue #12483: ctypes: Fix a crash when the destruction of a callback
  object triggers the garbage collector.

Jesus Cea's avatar
NEWS  
Jesus Cea committed
5971 5972 5973
- Issue #12950: Fix passing file descriptors in multiprocessing, under
  OpenIndiana/Illumos.

5974 5975 5976
- Issue #12764: Fix a crash in ctypes when the name of a Structure field is not
  a string.

Amaury Forgeot d'Arc's avatar
Amaury Forgeot d'Arc committed
5977 5978 5979 5980 5981
- Issue #11241: subclasses of ctypes.Array can now be subclassed.

- Issue #9651: Fix a crash when ctypes.create_string_buffer(0) was passed to
  some functions like file.write().

5982 5983 5984 5985
- Issue #10309: Define _GNU_SOURCE so that mremap() gets the proper
  signature.  Without this, architectures where sizeof void* != sizeof int are
  broken.  Patch given by Hallvard B Furuseth.

Ezio Melotti's avatar
Ezio Melotti committed
5986 5987
- Issue #12051: Fix segfault in json.dumps() while encoding highly-nested
  objects using the C accelerations.
5988

Ezio Melotti's avatar
Ezio Melotti committed
5989 5990
- Issue #12017: Fix segfault in json.loads() while decoding highly-nested
  objects using the C accelerations.
5991

Benjamin Peterson's avatar
Benjamin Peterson committed
5992 5993
- Issue #1838: Prevent segfault in ctypes, when _as_parameter_ on a class is set
  to an instance of the class.
5994

5995
Tests
5996
-----
5997

5998 5999 6000 6001 6002 6003 6004 6005 6006 6007 6008 6009 6010 6011 6012 6013 6014 6015 6016 6017 6018 6019 6020 6021 6022 6023 6024
- Issue #13125: Silence spurious test_lib2to3 output when in non-verbose mode.
  Patch by Mikhail Novikov.

- Issue #13447: Add a test file to host regression tests for bugs in the
  scripts found in the Tools directory.

- Issue #10881: Fix test_site failure with OS X framework builds.

- Issue #13901: Prevent test_distutils failures on OS X with --enable-shared.

- Issue #13862: Fix spurious failure in test_zlib due to runtime/compile time
  minor versions not matching.

- Issue #12804: Fix test_socket and test_urllib2net failures when running tests
  on a system without internet access.

- Issue #13726: Fix the ambiguous -S flag in regrtest. It is -o/--slow for slow
  tests.

- Issue #11659: Fix ResourceWarning in test_subprocess introduced by #11459.
  Patch by Ben Hayden.

- Issue #11577: fix ResourceWarning triggered by improved binhex test coverage

- Issue #11509: Significantly increase test coverage of fileinput.
  Patch by Denver Coneybeare at PyCon 2011 Sprints.

Petri Lehtinen's avatar
Petri Lehtinen committed
6025 6026
- Issue #11689: Fix a variable scoping error in an sqlite3 test

6027 6028
- Issue #13786: Remove unimplemented 'trace' long option from regrtest.py.

6029 6030 6031
- Issue #13725: Fix regrtest to recognize the documented -d flag.
  Patch by Erno Tukia.

6032 6033 6034
- Issue #13304: Skip test case if user site-packages disabled (-s or
  PYTHONNOUSERSITE).  (Patch by Carl Meyer)

6035 6036 6037
- Issue #5661: Add a test for ECONNRESET/EPIPE handling to test_asyncore. Patch
  by Xavier de Gaye.

6038 6039
- Issue #13218: Fix test_ssl failures on Debian/Ubuntu.

6040 6041 6042
- Re-enable lib2to3's test_parser.py tests, though with an expected failure
  (see issue 13125).

6043 6044
- Issue #12656: Add tests for IPv6 and Unix sockets to test_asyncore.

6045 6046
- Issue #6484: Add unit tests for mailcap module (patch by Gregory Nofi)

6047 6048 6049 6050 6051
- Issue #11651: Improve the Makefile test targets to run more of the test suite
  more quickly. The --multiprocess option is now enabled by default, reducing
  the amount of time needed to run the tests. "make test" and "make quicktest"
  now include some resource-intensive tests, but no longer run the test suite
  twice to check for bugs in .pyc generation. Tools/scripts/run_test.py provides
Éric Araujo's avatar
Éric Araujo committed
6052
  an easy platform-independent way to run test suite with sensible defaults.
6053

6054 6055 6056
- Issue #12331: The test suite for the packaging module can now run from an
  installed Python.

6057 6058 6059
- Issue #12331: The test suite for lib2to3 can now run from an installed
  Python.

6060 6061 6062 6063 6064
- Issue #12626: In regrtest, allow to filter tests using a glob filter
  with the ``-m`` (or ``--match``) option.  This works with all test cases
  using the unittest module.  This is useful with long test suites
  such as test_io or test_subprocess.

6065 6066 6067 6068 6069
- Issue #12624: It is now possible to fail after the first failure when
  running in verbose mode (``-v`` or ``-W``), by using the ``--failfast``
  (or ``-G``) option to regrtest.  This is useful with long test suites
  such as test_io or test_subprocess.

6070 6071 6072
- Issue #12587: Correct faulty test file and reference in test_tokenize.
  (Patch by Robert Xiao)

6073 6074
- Issue #12573: Add resource checks for dangling Thread and Process objects.

6075 6076 6077
- Issue #12549: Correct test_platform to not fail when OS X returns 'x86_64'
  as the processor type on some Mac systems.

6078 6079 6080
- Skip network tests when getaddrinfo() returns EAI_AGAIN, meaning a temporary
  failure in name resolution.

6081 6082 6083
- Issue #11812: Solve transient socket failure to connect to 'localhost'
  in test_telnetlib.py.

6084 6085
- Solved a potential deadlock in test_telnetlib.py. Related to issue #11812.

6086 6087 6088 6089
- Avoid failing in test_robotparser when mueblesmoraleda.com is flaky and
  an overzealous DNS service (e.g. OpenDNS) redirects to a placeholder
  Web site.

6090 6091 6092 6093
- Avoid failing in test_urllibnet.test_bad_address when some overzealous
  DNS service (e.g. OpenDNS) resolves a non-existent domain name.  The test
  is now skipped instead.

6094 6095 6096 6097
- Issue #12440: When testing whether some bits in SSLContext.options can be
  reset, check the version of the OpenSSL headers Python was compiled against,
  rather than the runtime version of the OpenSSL library.

6098 6099
- Issue #11512: Add a test suite for the cgitb module. Patch by Robbie Clemons.

6100 6101 6102 6103
- Issue #12497: Install test/data to prevent failures of the various codecmaps
  tests.

- Issue #12496: Install test/capath directory to prevent test_connect_capath
6104 6105
  testcase failure in test_ssl.

6106 6107 6108 6109
- Issue #12469: Run wakeup and pending signal tests in a subprocess to run the
  test in a fresh process with only one thread and to not change signal
  handling of the parent process.

6110 6111 6112 6113
- Issue #8716: Avoid crashes caused by Aqua Tk on OSX when attempting to run
  test_tk or test_ttk_guionly under a username that is not currently logged
  in to the console windowserver (as may be the case under buildbot or ssh).

6114 6115
- Issue #12407: Explicitly skip test_capi.EmbeddingTest under Windows.

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- Issue #12400: regrtest -W doesn't rerun the tests twice anymore, but captures
  the output and displays it on failure instead. regrtest -v doesn't print the
  error twice anymore if there is only one error.

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- Issue #12141: Install copies of template C module file so that
  test_build_ext of test_distutils and test_command_build_ext of
  test_packaging are no longer silently skipped when
  run outside of a build directory.

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- Issue #8746: Add additional tests for os.chflags() and os.lchflags().
  Patch by Garrett Cooper.

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- Issue #10736: Fix test_ttk test_widgets failures with Cocoa Tk 8.5.9
  2.8 +  on Mac OS X.  (Patch by Ronald Oussoren)

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- Issue #12057: Add tests for ISO 2022 codecs (iso2022_jp, iso2022_jp_2,
  iso2022_kr).

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- Issue #12096: Fix a race condition in test_threading.test_waitfor(). Patch
  written by Charles-François Natali.

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- Issue #11614: import __hello__ prints "Hello World!". Patch written by
  Andreas Stührk.

Ezio Melotti's avatar
Ezio Melotti committed
6140 6141
- Issue #5723: Improve json tests to be executed with and without accelerations.

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- Issue #12041: Make test_wait3 more robust.

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- Issue #11873: Change regex in test_compileall to fix occasional failures when
  when the randomly generated temporary path happened to match the regex.

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- Issue #11958: Fix FTP tests for IPv6, bind to "::1" instead of "localhost".
  Patch written by Charles-Francois Natali.

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- Issue #8407, #11859: Fix tests of test_io using threads and an alarm: use
  pthread_sigmask() to ensure that the SIGALRM signal is received by the main
  thread.

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- Issue #11811: Factor out detection of IPv6 support on the current host
  and make it available as ``test.support.IPV6_ENABLED``.  Patch by
  Charles-François Natali.

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- Issue #10914: Add a minimal embedding test to test_capi.

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- Issue #11223: Skip test_lock_acquire_interruption() and
  test_rlock_acquire_interruption() of test_threadsignals if a thread lock is
  implemented using a POSIX mutex and a POSIX condition variable. A POSIX
  condition variable cannot be interrupted by a signal (e.g. on Linux, the
  futex system call is restarted).

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- Issue #11790: Fix sporadic failures in test_multiprocessing.WithProcessesTestCondition.

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- Fix possible "file already exists" error when running the tests in parallel.

Ross Lagerwall's avatar
Ross Lagerwall committed
6170 6171
- Issue #11719: Fix message about unexpected test_msilib skip on non-Windows
  platforms. Patch by Nadeem Vawda.
6172

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- Issue #11727: Add a --timeout option to regrtest: if a test takes more than
  TIMEOUT seconds, dumps the traceback of all threads and exits.
6175

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- Issue #11653: fix -W with -j in regrtest.

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- The email test suite now lives in the Lib/test/test_email package.  The test
  harness code has also been modernized to allow use of new unittest features.

- regrtest now discovers test packages as well as test modules.

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- Issue #11577: improve test coverage of binhex.py. Patch by Arkady Koplyarov.
6184

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- New test_crashers added to exercise the scripts in the Lib/test/crashers
  directory and confirm they fail as expected

Éric Araujo's avatar
Éric Araujo committed
6188
- Issue #11578: added test for the timeit module.  Patch by Michael Henry.
6189

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- Issue #11503: improve test coverage of posixpath.py. Patch by Evan Dandrea.

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- Issue #11505: improves test coverage of string.py, increases granularity of
  string.Formatter tests. Initial patch by Alicia Arlen.
6194

Nick Coghlan's avatar
Nick Coghlan committed
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- Issue #11548: Improve test coverage of the shutil module. Patch by
  Evan Dandrea.

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- Issue #11554: Reactivated test_email_codecs.

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- Issue #11505: improves test coverage of string.py. Patch by Alicia
  Arlen
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6203
- Issue #11490: test_subprocess.test_leaking_fds_on_error no longer gives a
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  false positive if the last directory in the path is inaccessible.

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- Issue #11223: Fix test_threadsignals to fail, not hang, when the
  non-semaphore implementation of locks is used under POSIX.

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- Issue #10911: Add tests on CGI with non-ASCII characters. Patch written by
  Pierre Quentel.

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- Issue #9931: Fix hangs in GUI tests under Windows in certain conditions.
  Patch by Hirokazu Yamamoto.

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- Issue #10512: Properly close sockets under test.test_cgi.

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- Issue #10992: Make tests pass under coverage.

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- Issue #10826: Prevent sporadic failure in test_subprocess on Solaris due
  to open door files.

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- Issue #10990: Prevent tests from clobbering a set trace function.

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C-API
-----

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- Issue #13452: PyUnicode_EncodeDecimal() doesn't support error handlers
  different than "strict" anymore. The caller was unable to compute the
  size of the output buffer: it depends on the error handler.

- Issue #13560: Add PyUnicode_DecodeLocale(), PyUnicode_DecodeLocaleAndSize()
  and PyUnicode_EncodeLocale() functions to the C API to decode/encode from/to
  the current locale encoding.

- Issue #10831: PyUnicode_FromFormat() supports %li, %lli and %zi formats.

- Issue #11246: Fix PyUnicode_FromFormat("%V") to decode the byte string from
  UTF-8 (with replace error handler) instead of ISO-8859-1 (in strict mode).
  Patch written by Ray Allen.

- Issue #10830: Fix PyUnicode_FromFormatV("%c") for non-BMP characters on
  narrow build.

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- Add PyObject_GenericGetDict and PyObject_GeneriSetDict. They are generic
  implementations for the getter and setter of a ``__dict__`` descriptor of C
  types.

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- Issue #13727: Add 3 macros to access PyDateTime_Delta members:
  PyDateTime_DELTA_GET_DAYS, PyDateTime_DELTA_GET_SECONDS,
  PyDateTime_DELTA_GET_MICROSECONDS.

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- Issue #10542: Add 4 macros to work with surrogates: Py_UNICODE_IS_SURROGATE,
  Py_UNICODE_IS_HIGH_SURROGATE, Py_UNICODE_IS_LOW_SURROGATE,
  Py_UNICODE_JOIN_SURROGATES.

Brian Curtin's avatar
Brian Curtin committed
6256 6257
- Issue #12724: Add Py_RETURN_NOTIMPLEMENTED macro for returning NotImplemented.

Benjamin Peterson's avatar
Benjamin Peterson committed
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- PY_PATCHLEVEL_REVISION has been removed, since it's meaningless with
  Mercurial.
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6261
- Issue #12173: The first argument of PyImport_ImportModuleLevel is now `const
Benjamin Peterson's avatar
Benjamin Peterson committed
6262
  char *` instead of `char *`.
6263

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- Issue #12380: PyArg_ParseTuple now accepts a bytearray for the 'c' format.

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Documentation
-------------

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- Issue #13989: Document that GzipFile does not support text mode, and give a
  more helpful error message when opened with an invalid mode string.

- Issue #13921: Undocument and clean up sqlite3.OptimizedUnicode,
  which is obsolete in Python 3.x. It's now aliased to str for
  backwards compatibility.

- Issue #12102: Document that buffered files must be flushed before being used
  with mmap. Patch by Steffen Daode Nurpmeso.

- Issue #8982: Improve the documentation for the argparse Namespace object.

- Issue #9343: Document that argparse parent parsers must be configured before
  their children.

Hynek Schlawack's avatar
Hynek Schlawack committed
6284 6285
- Issue #13498: Clarify docs of os.makedirs()'s exist_ok argument.  Done with
  great native-speaker help from R. David Murray.
6286

Petri Lehtinen's avatar
Petri Lehtinen committed
6287 6288
- Issues #13491 and #13995: Fix many errors in sqlite3 documentation.
  Initial patch for #13491 by Johannes Vogel.
Petri Lehtinen's avatar
Petri Lehtinen committed
6289

Petri Lehtinen's avatar
Petri Lehtinen committed
6290 6291
- Issue #13402: Document absoluteness of sys.executable.

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- Issue #13883: PYTHONCASEOK also works on OS X.

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- Issue #9021: Add an introduction to the copy module documentation.

- Issue #6005: Examples in the socket library documentation use sendall, where
  relevant, instead send method.

- Issue #12798: Updated the mimetypes documentation.

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- Issue #12949: Document the kwonlyargcount argument for the PyCode_New
  C API function.

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- Issue #13513: Fix io.IOBase documentation to correctly link to the
  io.IOBase.readline method instead of the readline module.

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- Issue #13237: Reorganise subprocess documentation to emphasise convenience
  functions and the most commonly needed arguments to Popen.

Florent Xicluna's avatar
Florent Xicluna committed
6310 6311
- Issue #13141: Demonstrate recommended style for socketserver examples.

6312 6313
- Issue #11818: Fix tempfile examples for Python 3.

Georg Brandl's avatar
Georg Brandl committed
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**(For information about older versions, consult the HISTORY file.)**