135 lines
4.3 KiB
Plaintext
135 lines
4.3 KiB
Plaintext
+++++++++++
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Python News
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+++++++++++
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What's New in Python 3.4.0 Alpha 1?
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===================================
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*Relase date: XX-XXX-2014*
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Core and Builtins
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-----------------
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- Upgrade Unicode data (UCD) to version 6.2.
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- Issue #15379: Fix passing of non-BMP characters as integers for the charmap
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decoder (already working as unicode strings). Patch by Serhiy Storchaka.
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- Issue #15144: Fix possible integer overflow when handling pointers as
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integer values, by using Py_uintptr_t instead of size_t. Patch by
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Serhiy Storchaka.
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- Issue #15965: Explicitly cast AT_FDCWD as (int). Required on Solaris 10
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(which defines AT_FDCWD as 0xffd19553), harmless on other platforms.
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- Issue #15839: Convert SystemErrors in super() to RuntimeErrors.
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- Issue #15846: Fix SystemError which happened when using ast.parse in an
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exception handler on code with syntax errors.
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- Issue #15801: Make sure mappings passed to '%' formatting are actually
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subscriptable.
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Library
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-------
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- Issue #16034: Fix performance regressions in the new BZ2File implementation.
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Initial patch by Serhiy Storchaka.
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- pty.spawn() now returns the child process status returned by os.waitpid().
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- Issue #15756: subprocess.poll() now properly handles errno.ECHILD to
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return a returncode of 0 when the child has already exited or cannot
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be waited on.
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- Issue #15323: improve failure message of Mock.assert_called_once_with
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- Issue #16064: unittest -m claims executable is "python", not "python3"
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- Issue #12376: Pass on parameters in TextTestResult.__init__ super call
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- Issue #15222: Insert blank line after each message in mbox mailboxes
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- Issue #16013: Fix CSV Reader parsing issue with ending quote characters.
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Patch by Serhiy Storchaka.
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- Issue #15421: Fix an OverflowError in Calendar.itermonthdates() after
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datetime.MAXYEAR. Patch by Cédric Krier.
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- Issue #15970: xml.etree.ElementTree now serializes correctly the empty HTML
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elements 'meta' and 'param'.
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- Issue #15842: The SocketIO.{readable,writable,seekable} methods now
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raise ValueError when the file-like object is closed. Patch by Alessandro
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Moura.
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- Issue #15876: Fix a refleak in the curses module: window.encoding.
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- Issue #15881: Fixed atexit hook in multiprocessing. Original patch
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by Chris McDonough.
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- Issue #15841: The readable(), writable() and seekable() methods of BytesIO
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and StringIO objects now raise ValueError when the object has been closed.
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Patch by Alessandro Moura.
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- Issue #15447: Use subprocess.DEVNULL in webbrowser, instead of opening
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os.devnull explicitly and leaving it open.
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- Issue #15509: webbrowser.UnixBrowser no longer passes empty arguments to
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Popen when %action substitutions produce empty strings.
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- Issue #12776, issue #11839: call argparse type function (specified by add_argument)
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only once. Before, the type function was called twice in the case where the
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default was specified and the argument was given as well. This was especially
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problematic for the FileType type, as a default file would always be opened,
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even if a file argument was specified on the command line.
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- Issue #15906: Fix a regression in argparse caused by the preceding change,
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when action='append', type='str' and default=[].
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Extension Modules
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-----------------
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Tests
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-----
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- Issue #15304: Fix warning message when os.chdir() fails inside
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test.support.temp_cwd(). Patch by Chris Jerdonek.
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- Issue #15802: Fix test logic in TestMaildir.test_create_tmp. Patch
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by Serhiy Storchaka.
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- Issue #15557: Added a test suite for the webbrowser module, thanks
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to Anton Barkovsky.
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Build
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-----
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- Issue #15923: fix a mistake in asdl_c.py that resulted in a TypeError after
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2801bf875a24 (see #15801).
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- Issue #15819: Make sure we can build Python out-of-tree from a readonly
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source directory. (Somewhat related to Issue #9860.)
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Documentation
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-------------
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- Issue #15533: Clarify docs and add tests for subprocess.Popen()'s cwd
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argument.
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- Issue #16036: Improve documentation of built-in int()'s signature and
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arguments.
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- Issue #15935: Clarification of argparse docs, re: add_argument() type and
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default arguments. Patch contributed by Chris Jerdonek.
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- Issue #11964: Document a change in v3.2 to the behavior of the indent
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parameter of json encoding operations.
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Tools/Demos
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-----------
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**(For information about older versions, consult the HISTORY file.)**
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