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+++++++++++
Python News
+++++++++++
What's New in Python 3.4.0 Alpha 1?
===================================
*Relase date: XX-XXX-2014*
Core and Builtins
-----------------
- Upgrade Unicode data (UCD) to version 6.2.
- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
decoder (already working as unicode strings). Patch by Serhiy Storchaka.
- 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.
- Issue #15965: Explicitly cast `AT_FDCWD` as (int). Required on Solaris 10
(which defines `AT_FDCWD` as ``0xffd19553``), harmless on other platforms.
- Issue #15839: Convert SystemErrors in `super()` to RuntimeErrors.
- Issue #15846: Fix SystemError which happened when using `ast.parse()` in an
exception handler on code with syntax errors.
- Issue #15801: Make sure mappings passed to '%' formatting are actually
subscriptable.
Library
-------
- Issue #16034: Fix performance regressions in the new `bz2.BZ2File`
implementation. Initial patch by Serhiy Storchaka.
- `pty.spawn()` now returns the child process status returned by `os.waitpid()`.
- 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.
- Issue #15323: Improve failure message of `Mock.assert_called_once_with()`.
- Issue #16064: ``unittest -m`` claims executable is "python", not "python3".
- Issue #12376: Pass on parameters in `TextTestResult.__init__()` super call.
- Issue #15222: Insert blank line after each message in mbox mailboxes.
- Issue #16013: Fix `csv.Reader` parsing issue with ending quote characters.
Patch by Serhiy Storchaka.
- Issue #15421: Fix an OverflowError in `Calendar.itermonthdates()` after
`datetime.MAXYEAR`. Patch by Cédric Krier.
- Issue #15970: `xml.etree.ElementTree` now serializes correctly the empty HTML
elements 'meta' and 'param'.
- Issue #15842: The `SocketIO.{readable,writable,seekable}` methods now raise
ValueError when the file-like object is closed. Patch by Alessandro Moura.
- Issue #15876: Fix a refleak in the `curses` module: window.encoding.
- Issue #15881: Fix `atexit` hook in `multiprocessing`. Original patch by Chris
McDonough.
- 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.
- Issue #15447: Use `subprocess.DEVNULL` in webbrowser, instead of opening
`os.devnull` explicitly and leaving it open.
- Issue #15509: `webbrowser.UnixBrowser` no longer passes empty arguments to
Popen when ``%action`` substitutions produce empty strings.
- 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.
- Issue #15906: Fix a regression in argparse caused by the preceding change,
when ``action='append'``, ``type='str'`` and ``default=[]``.
Extension Modules
-----------------
Tests
-----
- Issue #15304: Fix warning message when `os.chdir()` fails inside
`test.support.temp_cwd()`. Patch by Chris Jerdonek.
- Issue #15802: Fix test logic in `TestMaildir.test_create_tmp()`. Patch by
Serhiy Storchaka.
- Issue #15557: Added a test suite for the webbrowser module, thanks to Anton
Barkovsky.
Build
-----
- Issue #15923: Fix a mistake in ``asdl_c.py`` that resulted in a TypeError
after 2801bf875a24 (see #15801).
- Issue #15819: Make sure we can build Python out-of-tree from a readonly source
directory. (Somewhat related to Issue #9860.)
Documentation
-------------
- Issue #15533: Clarify docs and add tests for `subprocess.Popen()`'s cwd
argument.
- Issue #16036: Improve documentation of built-in `int()`'s signature and
arguments.
- Issue #15935: Clarification of `argparse` docs, re: add_argument() type and
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.
Tools/Demos
-----------
**(For information about older versions, consult the HISTORY file.)**
|
