- Issue #20113: os.readv() and os.writev() now raise an OSError exception on
error instead of returning -1.
+- Issue #19719: Make importlib.abc.MetaPathFinder.find_module(),
+ PathEntryFinder.find_loader(), and Loader.load_module() use PEP 451 APIs to
+ help with backwards-compatibility.
+
+- Issue #20144: inspect.Signature now supports parsing simple symbolic
+ constants as parameter default values in __text_signature__.
+
- Issue #20072: Fixed multiple errors in tkinter with wantobjects is False.
+- Issue #20229: Avoid plistlib deprecation warning in platform.mac_ver().
+
+- Issue #14455: Fix some problems with the new binary plist support in plistlib.
+
+IDLE
+----
+
++- Issue #17721: Remove non-functional configuration dialog help button until we
++ make it actually gives some help when clicked. Patch by Guilherme Simões.
++
+- Issue #17390: Add Python version to Idle editor window title bar.
+ Original patches by Edmond Burnett and Kent Johnson.
+
+- Issue #18960: IDLE now ignores the source encoding declaration on the second
+ line if the first line contains anything except a comment.
+
+Tests
+-----
+
+- Issue #19990: Added tests for the imghdr module. Based on patch by
+ Claudiu Popa.
+
+- Issue #20358: Tests for curses.window.overlay and curses.window.overwrite
+ no longer specify min{row,col} > max{row,col}.
+
+- Issue #19804: The test_find_mac test in test_uuid is now skipped if the
+ ifconfig executable is not available.
+
+- Issue #19886: Use better estimated memory requirements for bigmem tests.
+
+Tools/Demos
+-----------
+
+- Issue #20390: Argument Clinic's "file" output preset now defaults to
+ "{dirname}/clinic/{basename}.h".
+
+- Issue #20390: Argument Clinic's "class" directive syntax has been extended
+ with two new required arguments: "typedef" and "type_object".
+
+- Issue #20390: Argument Clinic: If __new__ or __init__ functions didn't use
+ kwargs (or args), the PyArg_NoKeywords (or PyArg_NoPositional) calls
+ generated are only run when the type object is an exact match.
+
+- Issue #20390: Argument Clinic now fails if you have required parameters after
+ optional parameters.
+
+- Issue #20390: Argument Clinic converters now have a new template they can
+ inject code into: "modifiers". Code put there is run in the parsing
+ function after argument parsing but before the call to the impl.
+
+- Issue #20376: Argument Clinic now escapes backslashes in docstrings.
+
+- Issue #20381: Argument Clinic now sanity checks the default argument when
+ c_default is also specified, providing a nice failure message for
+ disallowed values.
+
+- Issue #20189: Argument Clinic now ensures that parser functions for
+ __new__ are always of type newfunc, the type of the tp_new slot.
+ Similarly, parser functions for __init__ are now always of type initproc,
+ the type of tp_init.
+
+- Issue #20189: Argument Clinic now suppresses the docstring for __new__
+ and __init__ functions if no docstring is provided in the input.
+
+- Issue #20189: Argument Clinic now suppresses the "self" parameter in the
+ impl for @staticmethod functions.
+
+- Issue #20294: Argument Clinic now supports argument parsing for __new__ and
+ __init__ functions.
+
+- Issue #20299: Argument Clinic custom converters may now change the default
+ value of c_default and py_default with a class member.
+
+- Issue #20287: Argument Clinic's output is now configurable, allowing
+ delaying its output or even redirecting it to a separate file.
+
+- Issue #20226: Argument Clinic now permits simple expressions
+ (e.g. "sys.maxsize - 1") as default values for parameters.
+
+- Issue #19936: Added executable bits or shebang lines to Python scripts which
+ requires them. Disable executable bits and shebang lines in test and
+ benchmark files in order to prevent using a random system python, and in
+ source files of modules which don't provide command line interface. Fixed
+ shebang lines in the unittestgui and checkpip scripts.
+
+- Issue #20268: Argument Clinic now supports cloning the parameters and
+ return converter of existing functions.
+
+- Issue #20228: Argument Clinic now has special support for class special
+ methods.
+
+- Issue #20214: Fixed a number of small issues and documentation errors in
+ Argument Clinic (see issue for details).
+
+- Issue #20196: Fixed a bug where Argument Clinic did not generate correct
+ parsing code for functions with positional-only parameters where all arguments
+ are optional.
+
+- Issue #18960: 2to3 and the findnocoding.py script now ignore the source
+ encoding declaration on the second line if the first line contains anything
+ except a comment.
+
+- Issue #19723: The marker comments Argument Clinic uses have been changed
+ to improve readability.
+
+- Issue #20157: When Argument Clinic renames a parameter because its name
+ collides with a C keyword, it no longer exposes that rename to PyArg_Parse.
+
+- Issue #20141: Improved Argument Clinic's support for the PyArg_Parse "O!"
+ format unit.
+
+- Issue #20144: Argument Clinic now supports simple symbolic constants
+ as parameter default values.
+
+- Issue #20143: The line numbers reported in Argument Clinic errors are
+ now more accurate.
+
+- Issue #20142: Py_buffer variables generated by Argument Clinic are now
+ initialized with a default value.
+
+Build
+-----
+
+- Issue #12837: Silence a tautological comparison warning on OS X under Clang in
+ socketmodule.c.
+
+What's New in Python 3.4.0 Beta 2?
+==================================
+
+Release date: 2014-01-05
+
+Core and Builtins
+-----------------
+
+- Issue #17432: Drop UCS2 from names of Unicode functions in python3.def.
+
+- Issue #19526: Exclude all new API from the stable ABI. Exceptions can be
+ made if a need is demonstrated.
+
+- Issue #19969: PyBytes_FromFormatV() now raises an OverflowError if "%c"
+ argument is not in range [0; 255].
+
+- Issue #19995: %c, %o, %x, and %X now issue a DeprecationWarning on non-integer
+ input; reworded docs to clarify that an integer type should define both __int__
+ and __index__.
+
+- Issue #19787: PyThread_set_key_value() now always set the value. In Python
+ 3.3, the function did nothing if the key already exists (if the current value
+ is a non-NULL pointer).
+
+- Issue #14432: Remove the thread state field from the frame structure. Fix a
+ crash when a generator is created in a C thread that is destroyed while the
+ generator is still used. The issue was that a generator contains a frame, and
+ the frame kept a reference to the Python state of the destroyed C thread. The
+ crash occurs when a trace function is setup.
+
+- Issue #19576: PyGILState_Ensure() now initializes threads. At startup, Python
+ has no concrete GIL. If PyGILState_Ensure() is called from a new thread for
+ the first time and PyEval_InitThreads() was not called yet, a GIL needs to be
+ created.
+
+- Issue #17576: Deprecation warning emitted now when __int__() or __index__()
+ return not int instance.
+
+- Issue #19932: Fix typo in import.h, missing whitespaces in function prototypes.
+
+- Issue #19736: Add module-level statvfs constants defined for GNU/glibc
+ based systems.
+
+- Issue #20097: Fix bad use of "self" in importlib's WindowsRegistryFinder.
+
+- Issue #19729: In str.format(), fix recursive expansion in format spec.
+
+- Issue #19638: Fix possible crash / undefined behaviour from huge (more than 2
+ billion characters) input strings in _Py_dg_strtod.
+
+Library
+-------
+
+- Issue #20154: Deadlock in asyncio.StreamReader.readexactly().
+
+- Issue #16113: Remove sha3 module again.
+
+- Issue #20111: pathlib.Path.with_suffix() now sanity checks the given suffix.
+
+- Fix breakage in TestSuite.countTestCases() introduced by issue #11798.
+
- Issue #20108: Avoid parameter name clash in inspect.getcallargs().
-- Issue #12692: Backport the fix for ResourceWarning in test_urllib2net. This
- also helps in closing the socket when Connection Close header is not sent.
+- Issue #19918: Fix PurePath.relative_to() under Windows.
- 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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