- Issue #15033: Fix the exit status bug when modules invoked using -m swith,
return the proper failure return value (1). Patch contributed by Jeff Knupp.
- - Issue #14826: Quote urls in urllib.request.Request identically to how they
+- Issue #15229: An OSError subclass whose __init__ doesn't call back
+ OSError.__init__ could produce incomplete instances, leading to crashes
+ when calling str() on them.
+
+Library
+-------
+
++- Issue #14826: Quote urls in urllib.request.Request similar to how they
+ are quoted by urllib.request.URLopener. Allows urls to spaces in them to work
+ transparently with urllib.request.urlopen(...). Patch contributed by Stephen
+ Thorne.
+
+- Issue #5931: wsgiref environ variable SERVER_SOFTWARE will specify an
+ implementation specific term like Cpython, Jython instead of generic "Python"
+
+- Issue #13248: Remove obsolete argument "max_buffer_size" of BufferedWriter
+ and BufferedRWPair, from the io module.
+
+- Issue #13248: Remove obsolete argument "version" of argparse.ArgumentParser.
+
+- Issue #14814: implement more consistent ordering and sorting behaviour
+ for ipaddress objects
+
+- Issue #14814: ipaddress network objects correctly return NotImplemented
+ when compared to arbitrary objects instead of raising TypeError
+
+- Issue #14990: Correctly fail with SyntaxError on invalid encoding
+ declaration.
+
+- Issue #14814: ipaddress now provides more informative error messages when
+ constructing instances directly (changes permitted during beta due to
+ provisional API status)
+
+- Issue #15247: FileIO now raises an error when given a file descriptor
+ pointing to a directory.
+
+- Issue #15261: Stop os.stat(fd) crashing on Windows when fd not open.
+
+- Issue #15166: Implement imp.get_tag() using sys.implementation.cache_tag.
+
+- Issue #15210: Catch KeyError when imprortlib.__init__ can't find
+ _frozen_importlib in sys.modules, not ImportError.
+
+- Issue #15030: importlib.abc.PyPycLoader now supports the new source size
+ header field in .pyc files.
+
+- Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox
+ files on flush().
+
+- Issue #10571: Fix the "--sign" option of distutils' upload command.
+ Patch by Jakub Wilk.
+
+- 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.
+
+- Issue 10924: Fixed mksalt() to use a RNG that is suitable for cryptographic
+ purpose.
+
+Extension Modules
+-----------------
+
+- Issue #15194: Update libffi to the 3.0.11 release.
+
+Tools/Demos
+-----------
+
+- 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:
+ * 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
+
+Tests
+-----
+
+- Issue #15284: Skip {send,recv}msg tests in test_socket when IPv6 is not
+ enabled. Patch by Brian Brazil.
+
+- Issue #15277: Fix a resource leak in support.py when IPv6 is disabled.
+ Patch by Brian Brazil.
+
+Build
+-----
+
+- Issue #14330: For cross builds, don't use host python, use host search paths
+ for host compiler.
+
+- Issue #15235: Allow Berkley DB versions up to 5.3 to build the dbm module.
+
+- Issue #15268: Search curses.h in /usr/include/ncursesw.
+
+
+What's New in Python 3.3.0 Beta 1?
+==================================
+
+*Release date: 27-Jun-2012*
+
+Core and Builtins
+-----------------
+
+- Fix a (most likely) very rare memory leak when calling main() and not being
+ able to decode a command-line argument.
+
+- Issue #14815: Use Py_ssize_t instead of long for the object hash, to
+ preserve all 64 bits of hash on Win64.
+
- 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
- Issue #10053: Don't close FDs when FileIO.__init__ fails. Loosely based on
the work by Hirokazu Yamamoto.
-- Issue #14775: Fix a potential quadratic dict build-up due to the garbage
- collector repeatedly trying to untrack dicts.
+- Issue #15096: Removed support for ur'' as the raw notation isn't
+ compatible with Python 2.x's raw unicode strings.
-- 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.
+- Issue #13783: Generator objects now use the identifier APIs internally
-- Issue #14761: Fix potential leak on an error case in the import machinery.
+- Issue #14874: Restore charmap decoding speed to pre-PEP 393 levels.
+ Patch by Serhiy Storchaka.
-- Issue #14699: Fix calling the classmethod descriptor directly.
+- Issue #15026: utf-16 encoding is now significantly faster (up to 10x).
+ Patch by Serhiy Storchaka.
-- Issue #14433: Prevent msvcrt crash in interactive prompt when stdin
- is closed.
+- 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.
-- Issue #11603 (again): Setting __repr__ to __str__ now raises a RuntimeError
- when repr() or str() is called on such an object.
+- Issue #14673: Add Eric Snow's sys.implementation implementation.
-- Issue #14658: Fix binding a special method to a builtin implementation of a
- special method with a different name.
+- Issue #15038: Optimize python Locks on Windows.
-- Issue #14630: Fix a memory access bug for instances of a subclass of int
- with value 0.
+Library
+-------
-- Issue #14612: Fix jumping around with blocks by setting f_lineno.
+- Issue #15187: Bugfix: remove temporary directories test_shutil was leaving
+ behind.
-- Issue #14607: Fix keyword-only arguments which started with ``__``.
+- Issue #15177: Added dir_fd parameter to os.fwalk().
-- 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.
+- Issue #15176: Clarified behavior, documentation, and implementation
+ of os.listdir().
-
+
-- Issue #14474: Save and restore exception state in thread.start_new_thread()
- while writing error message if the thread leaves a unhandled exception.
+- 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.
-- Issue #13019: Fix potential reference leaks in bytearray.extend(). Patch
- by Suman Saha.
+- Issue #15164: Change return value of platform.uname() from a
+ plain tuple to a collections.namedtuple.
-- Issue #14378: Fix compiling ast.ImportFrom nodes with a "__future__" string as
- the module name that was not interned.
+- Support Mageia Linux in the platform module.
-- Issue #14331: Use significantly less stack space when importing modules by
- allocating path buffers on the heap instead of the stack.
+- Issue #11678: Support Arch linux in the platform module.
-- Issue #14334: Prevent in a segfault in type.__getattribute__ when it was not
- passed strings.
+- Issue #15118: Change return value of os.uname() and os.times() from
+ plain tuples to immutable iterable objects with named attributes
+ (structseq objects).
-- Issue #1469629: Allow cycles through an object's __dict__ slot to be
- collected. (For example if ``x.__dict__ is x``).
+- 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.
-- Issue #14172: Fix reference leak when marshalling a buffer-like object
- (other than a bytes object).
+- Remove the packaging module, which is not ready for prime time.
-- Issue #13521: dict.setdefault() now does only one lookup for the given key,
- making it "atomic" for many purposes. Patch by Filip Gruszczyński.
+- Issue #15154: Add "dir_fd" parameter to os.rmdir, remove "rmdir"
+ parameter from os.remove / os.unlink.
-- Issue #14471: Fix a possible buffer overrun in the winreg module.
+- Issue #4489: Add a shutil.rmtree that isn't susceptible to symlink attacks.
+ It is used automatically on platforms supporting the necessary os.openat()
+ and os.unlinkat() functions. Main code by Martin von Löwis.
-Library
--------
+- Issue #15156: HTMLParser now uses the new "html.entities.html5" dictionary.
-- Issue #14826: Quote urls in urllib.request.Request similar to how they are
- quoted by urllib.request.URLopener. Allows urls to spaces in them to work
- transparently with urllib.request.urlopen(...). Patch contributed by Stephen
- Thorne.
+- 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.
-- Issue #14990: Correctly fail with SyntaxError on invalid encoding
- declaration.
+- Issue #15114: the strict mode of HTMLParser and the HTMLParseError exception
+ are deprecated now that the parser is able to parse invalid markup.
-- Issue #15247: FileIO now raises an error when given a file descriptor
- pointing to a directory.
+- Issue #3665: \u and \U escapes are now supported in unicode regular
+ expressions. Patch by Serhiy Storchaka.
-- Issue #5346: Preserve permissions of mbox, MMDF and Babyl mailbox
- files on flush().
+- Issue #15153: Added inspect.getgeneratorlocals to simplify white box
+ testing of generator state updates
-- Issue #10571: Fix the "--sign" option of distutils' upload command.
- Patch by Jakub Wilk.
+- Issue #13062: Added inspect.getclosurevars to simplify testing stateful
+ closures
-- 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.
+- Issue #11024: Fixes and additional tests for Time2Internaldate.
+
+- Issue #14626: Large refactoring of functions / parameters in the os module.
+ Many functions now support "dir_fd" and "follow_symlinks" parameters;
+ some also support accepting an open file descriptor in place of of a path
+ 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.
+
+- Issue #15008: Implement PEP 362 "Signature Objects".
+ Patch by Yury Selivanov.
+
+- Issue: #15138: base64.urlsafe_{en,de}code() are now 3-4x faster.
+
+- 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.
+
+- 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.
+
+- Issue #9527: datetime.astimezone() method will now supply a class
+ timezone instance corresponding to the system local timezone when
+ called with no arguments.
- Issue #14653: email.utils.mktime_tz() no longer relies on system
mktime() when timezone offest is supplied.
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