Mailman 3 September 2013 - Python-Dev

Re: [Python-Dev] cpython: Issue #18571: Implementation of the PEP 446: file descriptors and file handles
by Georg Brandl Sept. 15, 2013

Sept. 15, 2013

On 08/28/2013 01:20 AM, victor.stinner wrote: > http://hg.python.org/cpython/rev/ef889c3d5dc6 > changeset: 85420:ef889c3d5dc6 > user: Victor Stinner <victor.stinner(a)gmail.com> > date: Wed Aug 28 00:53:59 2013 +0200 > summary: > Issue #18571: Implementation of the PEP 446: file descriptors and file handles > are now created non-inheritable; add functions os.get/set_inheritable(), > os.get/set_handle_inheritable() and socket.socket.get/set_inheritable(). > +.. _fd_inheritance: > + > +Inheritance of File Descriptors > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > + > +A file descriptor has a inheritable flag which indicates if the file descriptor > +can be inherited or not in child processes. Since Python 3.4, file descriptors > +created by Python are non-inheritable by default. > + > +On UNIX, non-inheritable file descriptors are closed in child processes at the > +execution of a new program, other file descriptors are inherited. > + > +On Windows, non-inheritable handles and file descriptors are closed in child > +processes, except standard streams (file descriptors 0, 1 and 2: stdin, stdout > +and stderr) which are always inherited. Using :func:`os.spawn*` functions, > +all inheritable handles and all inheritable file descriptors are inherited. > +Using the :mod:`subprocess` module, all file descriptors except standard > +streams are closed, inheritable handles are only inherited if the *close_fds* > +parameter is ``False``. > + > +.. versionadded:: 3.4 > + > +.. function:: get_inheritable(fd) > + > + Get the `inheritable flag <fd_inheritance>`_ of the specified file > + descriptor. Return a :class:`bool`. > + > +.. function:: set_inheritable(fd, inheritable) > + > + Set the `inheritable flag <fd_inheritance>`_ of the specified file descriptor. > + > +.. function:: get_handle_inheritable(handle) > + > + Get the `inheritable flag <fd_inheritance>`_ of the specified handle. Return a :class:`bool`. > + > + Availability: Windows. > + > +.. function:: set_handle_inheritable(handle, inheritable) > + > + Set the `inheritable flag <fd_inheritance>`_ of the specified handle. > + > + Availability: Windows. > + "Handle" is used nowhere else in the os module documentation. Do you think it would make sense to have a brief paragraph on what are possible handles under Windows (and that file descriptors aren't handles)? Georg

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Re: [Python-Dev] [Python-checkins] cpython: Issue #18937: Add an assertLogs() context manager to unittest.TestCase to
by Terry Reedy Sept. 14, 2013

Sept. 14, 2013

On 9/14/2013 1:45 PM, antoine.pitrou wrote: > http://hg.python.org/cpython/rev/4f5815747f58 > changeset: 85701:4f5815747f58 > user: Antoine Pitrou <solipsis(a)pitrou.net> > date: Sat Sep 14 19:45:47 2013 +0200 > summary: > Issue #18937: Add an assertLogs() context manager to unittest.TestCase to ensure that a block of code emits a message using the logging module. > > files: > Doc/library/unittest.rst | 41 +++++++ > Lib/unittest/case.py | 109 +++++++++++++++++++- > Lib/unittest/test/test_case.py | 96 ++++++++++++++++++ > Misc/NEWS | 2 + > 4 files changed, 242 insertions(+), 6 deletions(-) > > > diff --git a/Doc/library/unittest.rst b/Doc/library/unittest.rst > --- a/Doc/library/unittest.rst > +++ b/Doc/library/unittest.rst > @@ -1031,6 +1031,47 @@ > .. versionchanged:: 3.3 > Added the *msg* keyword argument when used as a context manager. assertWarnsRegex > + .. method:: assertLogs(logger=None, level=None) > + > + A context manager to test that at least one message is logged on > + the *logger* or one of its children, with at least the given > + *level*. > + > + If given, *logger* should be a :class:`logging.Logger` object or a > + :class:`str` giving the name of a logger. The default is the root > + logger, which will catch all messages. > + > + If given, *level* should be either a numeric logging level or > + its string equivalent (for example either ``"ERROR"`` or > + :attr:`logging.ERROR`). The default is :attr:`logging.INFO`. > + > + The test passes if at least one message emitted inside the ``with`` > + block matches the *logger* and *level* conditions, otherwise it fails. > + > + The object returned by the context manager is a recording helper > + which keeps tracks of the matching log messages. It has two > + attributes: > + > + .. attribute:: records > + > + A list of :class:`logging.LogRecord` objects of the matching > + log messages. > + > + .. attribute:: output > + > + A list of :class:`str` objects with the formatted output of > + matching messages. > + > + Example:: > + > + with self.assertLogs('foo', level='INFO') as cm: > + logging.getLogger('foo').info('first message') > + logging.getLogger('foo.bar').error('second message') > + self.assertEqual(cm.output, ['INFO:foo:first message', > + 'ERROR:foo.bar:second message']) > + > + .. versionadded:: 3.4 > + > > There are also other methods used to perform more specific checks, such as: The new method should be added to the table of raises/warns methods that starts this group. The table intro sentence "It is also possible to check that exceptions and warnings are raised using the following methods:" should be modified to something like "It is also possible to check the production of exception, warning, and log messages using the following methods:" Terry

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Summary of Python tracker Issues
by Python tracker Sept. 13, 2013

Sept. 13, 2013

ACTIVITY SUMMARY (2013-09-06 - 2013-09-13) Python tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue. Do NOT respond to this message. Issues counts and deltas: open 4212 (+17) closed 26571 (+48) total 30783 (+65) Open issues with patches: 1935 Issues opened (46) ================== #18939: Venv docs regarding original python install http://bugs.python.org/issue18939 reopened by gwideman #18948: deliberately crashing tests should prevent core dumps http://bugs.python.org/issue18948 opened by pitrou #18950: Miscellaneous fixes for the sunau module http://bugs.python.org/issue18950 opened by serhiy.storchaka #18951: In unittest.TestCase.assertRegex change "re" and "regex" to "r http://bugs.python.org/issue18951 opened by py.user #18955: Confusing documentation in Lib/importlib/util.py http://bugs.python.org/issue18955 opened by vajrasky #18956: Document useful functions in ‘pydoc’ module http://bugs.python.org/issue18956 opened by bignose #18958: Exception('No JSON object could be decoded') when parsing a va http://bugs.python.org/issue18958 opened by Gallaecio #18959: Create a "Superseded modules" section in standard library ToC http://bugs.python.org/issue18959 opened by ncoghlan #18960: First line can be executed twice http://bugs.python.org/issue18960 opened by serhiy.storchaka #18961: Non-UTF8 encoding line http://bugs.python.org/issue18961 opened by serhiy.storchaka #18965: 2to3 can produce illegal bytes literals http://bugs.python.org/issue18965 opened by serhiy.storchaka #18966: Threads within multiprocessing Process terminate early http://bugs.python.org/issue18966 opened by pietvo #18967: Find a less conflict prone approach to Misc/NEWS http://bugs.python.org/issue18967 opened by ncoghlan #18968: Find a way to detect incorrectly skipped tests http://bugs.python.org/issue18968 opened by ncoghlan #18969: test suite: enable faulthandler timeout in assert_python http://bugs.python.org/issue18969 opened by neologix #18970: run_setup() behavior differs from cli invocation of setup.py http://bugs.python.org/issue18970 opened by l #18971: Use argparse in the profile/cProfile modules http://bugs.python.org/issue18971 opened by serhiy.storchaka #18972: Use argparse in email example scripts http://bugs.python.org/issue18972 opened by serhiy.storchaka #18973: Use argparse in the calendar module http://bugs.python.org/issue18973 opened by serhiy.storchaka #18974: Use argparse in the diff script http://bugs.python.org/issue18974 opened by serhiy.storchaka #18975: timeit: Use thousands separators and print number of loops per http://bugs.python.org/issue18975 opened by jstasiak #18976: distutils/command/build_ext passes wrong linker flags http://bugs.python.org/issue18976 opened by Benedikt.Morbach #18977: The -t option has no effect in for uu command-line http://bugs.python.org/issue18977 opened by serhiy.storchaka #18978: Allow urllib.request.Request subclasses to override method http://bugs.python.org/issue18978 opened by jason.coombs #18979: Use argparse in the uu module http://bugs.python.org/issue18979 opened by serhiy.storchaka #18981: Typo in the ctypes tests http://bugs.python.org/issue18981 opened by Anoop.Thomas.Mathew #18982: Add tests for CLI of the calendar module http://bugs.python.org/issue18982 opened by serhiy.storchaka #18983: Specify time unit for timeit CLI http://bugs.python.org/issue18983 opened by serhiy.storchaka #18985: Improve the documentation in fcntl module http://bugs.python.org/issue18985 opened by vajrasky #18986: Add a case-insensitive case-preserving dict http://bugs.python.org/issue18986 opened by pitrou #18987: distutils.utils.get_platform() for 32-bit Python on a 64-bit m http://bugs.python.org/issue18987 opened by sferencik #18989: reuse of enum names in class creation inconsistent http://bugs.python.org/issue18989 opened by ethan.furman #18990: Remove unnecessary API inconsistency from ElementTree.XMLPullP http://bugs.python.org/issue18990 opened by scoder #18993: There is an overshadowed and invalid test in testmock.py http://bugs.python.org/issue18993 opened by vajrasky #18994: Inside fcntl module, we does not check the return code of all_ http://bugs.python.org/issue18994 opened by vajrasky #18995: Enum does not work with reversed http://bugs.python.org/issue18995 opened by vajrasky #18996: unittest: more helpful truncating long strings http://bugs.python.org/issue18996 opened by serhiy.storchaka #18998: iter() not working in ElementTree http://bugs.python.org/issue18998 opened by Kronuz #18999: Robustness issues in multiprocessing.{get,set}_start_method http://bugs.python.org/issue18999 opened by larsmans #19001: test_gdb fails on Fedora buildbot http://bugs.python.org/issue19001 opened by pitrou #19003: email.generator.BytesGenerator corrupts data by changing line http://bugs.python.org/issue19003 opened by Alexander.Kruppa #19005: PyIter_Next crashes if passed a non-iterator http://bugs.python.org/issue19005 opened by abacabadabacaba #19006: UnitTest docs should have a single list of assertions http://bugs.python.org/issue19006 opened by roysmith #19007: precise time.time() under Windows 8 http://bugs.python.org/issue19007 opened by pitrou #19009: Enhance HTTPResponse.readline() performance http://bugs.python.org/issue19009 opened by kristjan.jonsson #19010: Make XMLPullParser in ElementTree inherit from XMLParser http://bugs.python.org/issue19010 opened by scoder Most recent 15 issues with no replies (15) ========================================== #19010: Make XMLPullParser in ElementTree inherit from XMLParser http://bugs.python.org/issue19010 #19005: PyIter_Next crashes if passed a non-iterator http://bugs.python.org/issue19005 #19003: email.generator.BytesGenerator corrupts data by changing line http://bugs.python.org/issue19003 #19001: test_gdb fails on Fedora buildbot http://bugs.python.org/issue19001 #18996: unittest: more helpful truncating long strings http://bugs.python.org/issue18996 #18994: Inside fcntl module, we does not check the return code of all_ http://bugs.python.org/issue18994 #18985: Improve the documentation in fcntl module http://bugs.python.org/issue18985 #18982: Add tests for CLI of the calendar module http://bugs.python.org/issue18982 #18981: Typo in the ctypes tests http://bugs.python.org/issue18981 #18979: Use argparse in the uu module http://bugs.python.org/issue18979 #18977: The -t option has no effect in for uu command-line http://bugs.python.org/issue18977 #18976: distutils/command/build_ext passes wrong linker flags http://bugs.python.org/issue18976 #18974: Use argparse in the diff script http://bugs.python.org/issue18974 #18972: Use argparse in email example scripts http://bugs.python.org/issue18972 #18971: Use argparse in the profile/cProfile modules http://bugs.python.org/issue18971 Most recent 15 issues waiting for review (15) ============================================= #19009: Enhance HTTPResponse.readline() performance http://bugs.python.org/issue19009 #18999: Robustness issues in multiprocessing.{get,set}_start_method http://bugs.python.org/issue18999 #18996: unittest: more helpful truncating long strings http://bugs.python.org/issue18996 #18995: Enum does not work with reversed http://bugs.python.org/issue18995 #18994: Inside fcntl module, we does not check the return code of all_ http://bugs.python.org/issue18994 #18993: There is an overshadowed and invalid test in testmock.py http://bugs.python.org/issue18993 #18990: Remove unnecessary API inconsistency from ElementTree.XMLPullP http://bugs.python.org/issue18990 #18989: reuse of enum names in class creation inconsistent http://bugs.python.org/issue18989 #18986: Add a case-insensitive case-preserving dict http://bugs.python.org/issue18986 #18985: Improve the documentation in fcntl module http://bugs.python.org/issue18985 #18982: Add tests for CLI of the calendar module http://bugs.python.org/issue18982 #18981: Typo in the ctypes tests http://bugs.python.org/issue18981 #18979: Use argparse in the uu module http://bugs.python.org/issue18979 #18978: Allow urllib.request.Request subclasses to override method http://bugs.python.org/issue18978 #18977: The -t option has no effect in for uu command-line http://bugs.python.org/issue18977 Top 10 most discussed issues (10) ================================= #18986: Add a case-insensitive case-preserving dict http://bugs.python.org/issue18986 46 msgs #18943: argparse: default args in mutually exclusive groups http://bugs.python.org/issue18943 12 msgs #18999: Robustness issues in multiprocessing.{get,set}_start_method http://bugs.python.org/issue18999 12 msgs #17797: Visual C++ 11.0 reports fileno(stdin) == 0 for non-console pro http://bugs.python.org/issue17797 10 msgs #18967: Find a less conflict prone approach to Misc/NEWS http://bugs.python.org/issue18967 10 msgs #18975: timeit: Use thousands separators and print number of loops per http://bugs.python.org/issue18975 10 msgs #18987: distutils.utils.get_platform() for 32-bit Python on a 64-bit m http://bugs.python.org/issue18987 10 msgs #5815: locale.getdefaultlocale() missing corner case http://bugs.python.org/issue5815 9 msgs #18829: csv produces confusing error message when passed a non-string http://bugs.python.org/issue18829 8 msgs #1565525: tracebacks eat up memory by holding references to locals and g http://bugs.python.org/issue1565525 8 msgs Issues closed (46) ================== #14927: add "Do not supply 'int' argument" to random.shuffle docstring http://bugs.python.org/issue14927 closed by orsenthil #14971: (unittest) loadTestsFromName does not work on method with a de http://bugs.python.org/issue14971 closed by python-dev #17324: SimpleHTTPServer serves files even if the URL has a trailing s http://bugs.python.org/issue17324 closed by orsenthil #18033: Example for Profile Module shows incorrect method http://bugs.python.org/issue18033 closed by orsenthil #18206: license url in site.py should always use X.Y.Z form of version http://bugs.python.org/issue18206 closed by orsenthil #18301: In itertools.chain.from_iterable() there is no cls argument http://bugs.python.org/issue18301 closed by rhettinger #18438: Obsolete url in comment inside decimal module http://bugs.python.org/issue18438 closed by orsenthil #18553: os.isatty() is not Unix only http://bugs.python.org/issue18553 closed by orsenthil #18623: Factor out the _SuppressCoreFiles context manager http://bugs.python.org/issue18623 closed by pitrou #18752: Make chain.from_iterable an alias for a new chain_iterable. http://bugs.python.org/issue18752 closed by rhettinger #18784: minor uuid.py loading optimization http://bugs.python.org/issue18784 closed by serhiy.storchaka #18800: Document Fraction's numerator and denominator properties http://bugs.python.org/issue18800 closed by orsenthil #18808: Thread.join returns before PyThreadState is destroyed http://bugs.python.org/issue18808 closed by pitrou #18815: DOCUMENTATION: "mmap .close()" doesn't close the underlying fi http://bugs.python.org/issue18815 closed by orsenthil #18818: Empty PYTHONIOENCODING is not the same as nonexistent http://bugs.python.org/issue18818 closed by serhiy.storchaka #18821: Add .lastitem attribute to takewhile instances http://bugs.python.org/issue18821 closed by rhettinger #18852: site.py does not handle readline.__doc__ being None http://bugs.python.org/issue18852 closed by r.david.murray #18894: In unittest.TestResult.failures remove deprecated fail* method http://bugs.python.org/issue18894 closed by ezio.melotti #18895: In unittest.TestResult.addError split the sentence http://bugs.python.org/issue18895 closed by ezio.melotti #18904: Unnecessary test in file descriptor inheritance test http://bugs.python.org/issue18904 closed by haypo #18908: Enum docs: sections leak out http://bugs.python.org/issue18908 closed by python-dev #18915: ssl.wrap_socket, pass in certfile and keyfile as PEM strings http://bugs.python.org/issue18915 closed by asvetlov #18917: python won't display greek characters in apache under windows http://bugs.python.org/issue18917 closed by nickl1 #18934: multiprocessing: use selectors module http://bugs.python.org/issue18934 closed by neologix #18935: test_regrtest.test_timeout failure http://bugs.python.org/issue18935 closed by neologix #18944: Minor mistake in test_set.py http://bugs.python.org/issue18944 closed by tim.peters #18946: HTMLParser should ignore errors when parsing text in <script> http://bugs.python.org/issue18946 closed by ezio.melotti #18947: Bug in module netaddr http://bugs.python.org/issue18947 closed by r.david.murray #18949: codeop possible flow error http://bugs.python.org/issue18949 closed by serhiy.storchaka #18952: Fix test.support.open_urlresource (support package regression) http://bugs.python.org/issue18952 closed by python-dev #18953: Typo in NEWS about fixed format specifiers for Py_ssize_t in d http://bugs.python.org/issue18953 closed by python-dev #18954: Grammatically incorrect sentences in Python/fileutils.c http://bugs.python.org/issue18954 closed by python-dev #18957: PYTHONFAULTHANDLER enables faulthandler when the variable is e http://bugs.python.org/issue18957 closed by python-dev #18962: Add special case for single iterator in heapq.merge function http://bugs.python.org/issue18962 closed by rhettinger #18963: test_selectors test_above_fd_setsize cases fail on OS X due to http://bugs.python.org/issue18963 closed by neologix #18964: test_tcl fails when _tkinter linked with Tcl 8.4 http://bugs.python.org/issue18964 closed by python-dev #18980: Docs: enum - ReST format http://bugs.python.org/issue18980 closed by python-dev #18984: Remove .stopped Event from Thread internals http://bugs.python.org/issue18984 closed by tim.peters #18988: Tab key doesn't work sometimes. http://bugs.python.org/issue18988 closed by serhiy.storchaka #18991: Overriding OrderedDict.__getitem__() doesn't work http://bugs.python.org/issue18991 closed by alex #18992: test_sax fails on Windows under 3.4.0a2 http://bugs.python.org/issue18992 closed by loewis #18997: Crash when using pickle and ElementTree http://bugs.python.org/issue18997 closed by eli.bendersky #19000: Alt + <Num> Does Not Work in IDLE. http://bugs.python.org/issue19000 closed by Howitzer21 #19002: ``dir`` function does not work correctly with classes. http://bugs.python.org/issue19002 closed by r.david.murray #19004: datetime: Read in isoformat() output http://bugs.python.org/issue19004 closed by r.david.murray #19008: tkinter: UnboundLocalError: local variable 'sys' referenced be http://bugs.python.org/issue19008 closed by Arfrever

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Add a "transformdict" to collections
by Antoine Pitrou Sept. 12, 2013

Sept. 12, 2013

Hello, In http://bugs.python.org/issue18986 I proposed adding a new mapping type to the collections module. The original use case is quite common in network programming and elsewhere (Eric Snow on the tracker mentioned an application with stock symbols). You want to have an associative container which matches keys case-insensitively but also preserves the original casing (e.g. for presentation). It is a commonly reimplemented container. It is also an instance of a more general pattern: match keys after applying a derivation (or coercion) function, but at the same time keep track of the original key. Note that the derivation function needn't be (and generally won't be) bijective, otherwise it's too simple. Therefore I propose adding the general pattern. Simple example: >>> d = transformdict(str.lower) >>> d['Foo'] = 5 >>> d['foo'] 5 >>> d['FOO'] 5 >>> list(d) ['Foo'] (case-insensitive but case-preserving, as the best filesystems are ;-)) On the tracker issue, it seems everyone agreed on the principle. There is some bikeshedding left to do, though. So here are the reasonable naming proposals so far: - transformkeydict - coercekeydict - transformdict - coercedict I have a sweet spot for "transformdict" myself. Regards Antoine.

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f_lineno accessors
by Xavier de Gaye Sept. 12, 2013

Sept. 12, 2013

In issues 7238 [1], 16482 [2], 17697 [3] and 17277 [4], the line number may be incorrect when the global trace function has been removed but not the frame f_trace function. A simple test (see below) in issue 17288 [5] crashes the interpreter when setting f_lineno in a generator from a return trace function. All those issues are few months old. There is a patch at issue 17277 [4] that fixes the first 4 issues. There is also a patch for issue 17288 [5]. ###### Setting f_lineno in a generator ###### $ cat jump.py def gen(): for i in range(1): yield i lineno = 4 for i in gen(): pass $ python -m pdb jump.py > /tmp/jump.py(1)<module>() -> def gen(): (Pdb) import sys; print(sys.version) 3.4.0a1+ (default:975d1e180689, Sep 6 2013, 09:26:12) [GCC 4.3.2] (Pdb) break 3 Breakpoint 1 at /tmp/jump.py:3 (Pdb) continue > /tmp/jump.py(3)gen() -> yield i (Pdb) step --Return-- > /tmp/jump.py(3)gen()->0 -> yield i (Pdb) jump 2 > /tmp/jump.py(2)gen()->0 -> for i in range(1): (Pdb) continue Segmentation fault [1] http://bugs.python.org/issue7238 [2] http://bugs.python.org/issue16482 [3] http://bugs.python.org/issue17697 [4] http://bugs.python.org/issue17277 [5] http://bugs.python.org/issue17288 Xavier

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Need testing audio files
by Serhiy Storchaka Sept. 11, 2013

Sept. 11, 2013

I work on enhancement of audio modules testing [1], and I need free (in both senses) small sample audio files in different formats. We already have audiotest.au (mono, and sunau has a bug in processing multichannel files [2]) and Sine-1000Hz-300ms.aif, but this is not enough. I have generated a pack of files like Sine-1000Hz-300ms.aif by Python, it is enough for regression testing but only if current implementation is correct. I found some collections of sample files at [3], but I'm not sure about copyright, and perhaps they are a little too big. In ideal it should be one high-quality (float64?) multichannel (5+1?) but short master file and it's lower-quality copies made by third-party tools. In ideal the content should be related to Python. [1] http://bugs.python.org/issue18919 [2] http://bugs.python.org/issue18950 [3] http://www-mmsp.ece.mcgill.ca/documents/AudioFormats/

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importance of dir
by Ethan Furman Sept. 11, 2013

Sept. 11, 2013

http://docs.python.org/3/library/functions.html#dir: > > Note: Because dir() is supplied primarily as a convenience for > use at an interactive prompt [...] I suspect this comment is out of date, as there are two functions in the inspect module that rely on dir(), which also means that help indirectly relies on dir(). And we also now have the __dir__ method that we can use to customize what gets returned. > [...] more than it tries to supply a rigorously or consistently > defined set of names, [...] If this is still true, should inspect be relying on dir()? -- ~Ethan~

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IOCP (I/O Completion Port) in Python ?
by 张佩佩 Sept. 10, 2013

Sept. 10, 2013

Hello: I wondering why there is no standard IOCP module in Python ? As I know: Python3 have support epoll in linux and kqueue in freebsd. Is there a plan to add IOCP module for Windows ? Regards! peipei

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Offtopic: OpenID Providers
by Jesus Cea Sept. 10, 2013

Sept. 10, 2013

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I just received an email from my OpenID provider, "myOpenID", saying that they drop OpenID service next February. I wonder what other OpenID providers are used by other python-dev fellows. What are you using?. bugs.python.org admins could share some data? I agree than OpenID is (quite) dead, but I rather prefer OpenID to use user/pass. I have big hopes for Mozilla Persona, looking forward Python infrastructure support :). PS: I use "http://www.jcea.es/" as my OpenID identity, and I delegate the actual service to "myOpenID". I can switch delegation trivially. - -- Jesús Cea Avión _/_/ _/_/_/ _/_/_/ jcea(a)jcea.es - http://www.jcea.es/ _/_/ _/_/ _/_/ _/_/ _/_/ Twitter: @jcea _/_/ _/_/ _/_/_/_/_/ jabber / xmpp:jcea@jabber.org _/_/ _/_/ _/_/ _/_/ _/_/ "Things are not so easy" _/_/ _/_/ _/_/ _/_/ _/_/ _/_/ "My name is Dump, Core Dump" _/_/_/ _/_/_/ _/_/ _/_/ "El amor es poner tu felicidad en la felicidad de otro" - Leibniz -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQCVAwUBUijAD5lgi5GaxT1NAQLH0wQAkKDORrAtfJFzzIHl3lHRp7GfxOzdqdNP uiuW65l/pas+p9+B0G6qR6EE2AAL7YPozcNF5AkmuGmxkpyn/JyUYKJcUWmUotpj V9Buz9jz3qpPuv7AlTnMbjBBQK4YTYenbdk2HgI41SVQHZHkU/+y4CL3Y1hWyJNo C8CCWfR0VlA= =YXIq -----END PGP SIGNATURE-----

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[RELEASED] Python 3.4.0a2
by Larry Hastings Sept. 10, 2013

Sept. 10, 2013

On behalf of the Python development team, I'm chuffed to announce the second alpha release of Python 3.4. This is a preview release, and its use is not recommended for production settings. Python 3.4 includes a range of improvements of the 3.x series, including hundreds of small improvements and bug fixes. Major new features and changes in the 3.4 release series so far include: * PEP 435, a standardized "enum" module * PEP 442, improved semantics for object finalization * PEP 443, adding single-dispatch generic functions to the standard library * PEP 445, a new C API for implementing custom memory allocators * PEP 446, changing file descriptors to not be inherited by default in subprocesses * PEP 447, a new magic method for metaclasses (``__typelookup__``) * PEP 448, making automatic sequence unpacking more general To download Python 3.4.0a2 visit: http://www.python.org/download/releases/3.4.0/ Please consider trying Python 3.4.0a2 with your code and reporting any issues you notice to: http://bugs.python.org/ Enjoy! -- Larry Hastings, Release Manager larry at hastings.org (on behalf of the entire python-dev team and 3.4's contributors)

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