Mailman 3 February 2014 - Python-Dev

Summary of Python tracker Issues
by Python tracker Feb. 28, 2014

Feb. 28, 2014

ACTIVITY SUMMARY (2014-02-21 - 2014-02-28) 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 4582 (+24) closed 27999 (+62) total 32581 (+86) Open issues with patches: 2073 Issues opened (53) ================== #20693: Sidebar scrolls down 2x as fast as page content http://bugs.python.org/issue20693 reopened by georg.brandl #20726: inspect: Make Signature instances picklable http://bugs.python.org/issue20726 opened by yselivanov #20727: Improved roundrobin itertools recipe http://bugs.python.org/issue20727 opened by david.lindquist #20728: Remove unused import from base64 http://bugs.python.org/issue20728 opened by Claudiu.Popa #20729: mailbox.Mailbox does odd hasattr() check http://bugs.python.org/issue20729 opened by Rosuav #20736: test_socket: testSendmsgDontWait needlessly skipped on Linux http://bugs.python.org/issue20736 opened by baikie #20737: 3.3 _thread lock.acquire() timeout and threading.Event().wait( http://bugs.python.org/issue20737 opened by raruler #20739: PEP 463 (except expression) implementation http://bugs.python.org/issue20739 opened by twouters #20741: Documentation archives should be available also in tar.xz form http://bugs.python.org/issue20741 opened by Arfrever #20742: 2to3 zip fixer doesn't fix for loops. http://bugs.python.org/issue20742 opened by drj #20744: shutil should not use distutils http://bugs.python.org/issue20744 opened by doko #20745: test_statistics fails in refleak mode http://bugs.python.org/issue20745 opened by pitrou #20746: test_pdb fails in refleak mode http://bugs.python.org/issue20746 opened by pitrou #20747: Charset.header_encode in email.charset doesn't take a maxlinel http://bugs.python.org/issue20747 opened by rednaw #20748: 3.4rc2 MSI uninstallation leaves behind ensurepip _uninstall . http://bugs.python.org/issue20748 opened by loewis #20749: shutil.unpack_archive(): security concerns not documented http://bugs.python.org/issue20749 opened by jwilk #20750: Roundtrip-test tokenize.untokenize(iterable_of_5_tuples) http://bugs.python.org/issue20750 opened by terry.reedy #20751: Misleading examples in the descriptor protocol documentation http://bugs.python.org/issue20751 opened by zuo #20752: Difflib should provide the option of overriding the SequenceMa http://bugs.python.org/issue20752 opened by offby1 #20753: disable test_robotparser test that uses an invalid URL http://bugs.python.org/issue20753 opened by larry #20754: distutils should use SafeConfigParser http://bugs.python.org/issue20754 opened by alunduil #20756: Segmentation fault with unoconv http://bugs.python.org/issue20756 opened by Sworddragon #20758: mimetypes initialization order http://bugs.python.org/issue20758 opened by chid #20760: test_compileall test getting failed on 3.4 RC http://bugs.python.org/issue20760 opened by vipulb #20761: os.path.join doesn't strip LF or CR http://bugs.python.org/issue20761 opened by ExtraVeral #20762: SSLSocket.read() not documented http://bugs.python.org/issue20762 opened by ebianchi #20766: reference leaks in pdb http://bugs.python.org/issue20766 opened by xdegaye #20767: Some python extensions can't be compiled with clang 3.4 http://bugs.python.org/issue20767 opened by Antoine.Brodin.FreeBSD #20768: pyconfig.h #defines macros in global namespace http://bugs.python.org/issue20768 opened by fsateler #20769: Reload() description is unclear http://bugs.python.org/issue20769 opened by roysmith #20770: Inform caller of smtplib STARTTLS failures http://bugs.python.org/issue20770 opened by aclover #20773: Improve docs for DynamicClassAttribute http://bugs.python.org/issue20773 opened by ethan.furman #20774: collections.deque should ship with a stdlib json serializer http://bugs.python.org/issue20774 opened by acdha #20776: Add tests for importlib.machinery.PathFinder http://bugs.python.org/issue20776 opened by brett.cannon #20779: Add pathlib.chown method http://bugs.python.org/issue20779 opened by vajrasky #20780: Shadowed (duplicate name but different body) test in test_stat http://bugs.python.org/issue20780 opened by vajrasky #20782: base64 module docs do not use the terms 'bytes' and 'string' c http://bugs.python.org/issue20782 opened by r.david.murray #20784: 'collections.abc' is no longer defined when collections is imp http://bugs.python.org/issue20784 opened by r.david.murray #20785: Missing symbols in Python27.lib (Windows 64bit) http://bugs.python.org/issue20785 opened by Victor.Lazzarini #20786: inspect.getargspec() returns wrong answer with property.__dele http://bugs.python.org/issue20786 opened by zzzeek #20787: typo in asyncio docs for subprocess_exec() http://bugs.python.org/issue20787 opened by akira #20788: distutils.msvccompiler - flags are hidden inside initialize() http://bugs.python.org/issue20788 opened by Matt.Goodman #20789: [3.4] cherrypick 5dec1604322c http://bugs.python.org/issue20789 opened by brett.cannon #20792: IDLE: Extend tests for PathBrowser http://bugs.python.org/issue20792 opened by sahutd #20797: zipfile.extractall should accept bytes path as parameter http://bugs.python.org/issue20797 opened by Laurent.Mazuel #20799: Turn on all tests in test.test_importlib.source.test_file_load http://bugs.python.org/issue20799 opened by brett.cannon #20800: Cannot run gui tests twice. http://bugs.python.org/issue20800 opened by terry.reedy #20803: struct.pack_into writes 0x00 for pad bytes http://bugs.python.org/issue20803 opened by bsder #20804: Sentinels identity lost when pickled (unittest.mock) http://bugs.python.org/issue20804 opened by Vlastimil.Zíma #20806: os.times document points to wrong section of non-Linux manual http://bugs.python.org/issue20806 opened by geoffreyspear #20807: 3.4 cherry pick: 82ec02db7fe6 & ec42ab5e0cb3 Windows installer http://bugs.python.org/issue20807 opened by ncoghlan #20808: 3.4 cherry pick: 6a1711c96fa6 (Popen.__del__ traceback) http://bugs.python.org/issue20808 opened by barry #20809: isabspath fails if path is None http://bugs.python.org/issue20809 opened by jordannh Most recent 15 issues with no replies (15) ========================================== #20809: isabspath fails if path is None http://bugs.python.org/issue20809 #20799: Turn on all tests in test.test_importlib.source.test_file_load http://bugs.python.org/issue20799 #20797: zipfile.extractall should accept bytes path as parameter http://bugs.python.org/issue20797 #20789: [3.4] cherrypick 5dec1604322c http://bugs.python.org/issue20789 #20788: distutils.msvccompiler - flags are hidden inside initialize() http://bugs.python.org/issue20788 #20787: typo in asyncio docs for subprocess_exec() http://bugs.python.org/issue20787 #20785: Missing symbols in Python27.lib (Windows 64bit) http://bugs.python.org/issue20785 #20782: base64 module docs do not use the terms 'bytes' and 'string' c http://bugs.python.org/issue20782 #20780: Shadowed (duplicate name but different body) test in test_stat http://bugs.python.org/issue20780 #20776: Add tests for importlib.machinery.PathFinder http://bugs.python.org/issue20776 #20754: distutils should use SafeConfigParser http://bugs.python.org/issue20754 #20751: Misleading examples in the descriptor protocol documentation http://bugs.python.org/issue20751 #20749: shutil.unpack_archive(): security concerns not documented http://bugs.python.org/issue20749 #20748: 3.4rc2 MSI uninstallation leaves behind ensurepip _uninstall . http://bugs.python.org/issue20748 #20746: test_pdb fails in refleak mode http://bugs.python.org/issue20746 Most recent 15 issues waiting for review (15) ============================================= #20809: isabspath fails if path is None http://bugs.python.org/issue20809 #20792: IDLE: Extend tests for PathBrowser http://bugs.python.org/issue20792 #20787: typo in asyncio docs for subprocess_exec() http://bugs.python.org/issue20787 #20780: Shadowed (duplicate name but different body) test in test_stat http://bugs.python.org/issue20780 #20779: Add pathlib.chown method http://bugs.python.org/issue20779 #20767: Some python extensions can't be compiled with clang 3.4 http://bugs.python.org/issue20767 #20766: reference leaks in pdb http://bugs.python.org/issue20766 #20758: mimetypes initialization order http://bugs.python.org/issue20758 #20753: disable test_robotparser test that uses an invalid URL http://bugs.python.org/issue20753 #20752: Difflib should provide the option of overriding the SequenceMa http://bugs.python.org/issue20752 #20739: PEP 463 (except expression) implementation http://bugs.python.org/issue20739 #20736: test_socket: testSendmsgDontWait needlessly skipped on Linux http://bugs.python.org/issue20736 #20729: mailbox.Mailbox does odd hasattr() check http://bugs.python.org/issue20729 #20728: Remove unused import from base64 http://bugs.python.org/issue20728 #20727: Improved roundrobin itertools recipe http://bugs.python.org/issue20727 Top 10 most discussed issues (10) ================================= #20727: Improved roundrobin itertools recipe http://bugs.python.org/issue20727 12 msgs #20440: Use Py_REPLACE/Py_XREPLACE macros http://bugs.python.org/issue20440 10 msgs #16484: pydoc generates invalid docs.python.org link for xml.etree.Ele http://bugs.python.org/issue16484 8 msgs #19021: AttributeError in Popen.__del__ http://bugs.python.org/issue19021 8 msgs #20630: Add sorting helpers for collections containing None values http://bugs.python.org/issue20630 8 msgs #20747: Charset.header_encode in email.charset doesn't take a maxlinel http://bugs.python.org/issue20747 8 msgs #20784: 'collections.abc' is no longer defined when collections is imp http://bugs.python.org/issue20784 8 msgs #9291: mimetypes initialization fails on Windows because of non-Latin http://bugs.python.org/issue9291 7 msgs #20804: Sentinels identity lost when pickled (unittest.mock) http://bugs.python.org/issue20804 7 msgs #19619: Blacklist base64, hex, ... codecs from bytes.decode() and str. http://bugs.python.org/issue19619 6 msgs Issues closed (61) ================== #6815: UnicodeDecodeError in os.path.expandvars http://bugs.python.org/issue6815 closed by serhiy.storchaka #9974: tokenizer.untokenize not invariant with line continuations http://bugs.python.org/issue9974 closed by terry.reedy #14513: IDLE icon switched and switches on Windows taskbar http://bugs.python.org/issue14513 closed by terry.reedy #16074: Bad error message in os.rename, os.link, and os.symlink http://bugs.python.org/issue16074 closed by georg.brandl #17053: pydoc should use inspect.signature instead of inspect.getfulla http://bugs.python.org/issue17053 closed by yselivanov #19470: email.header.Header - should not allow two newlines in a row http://bugs.python.org/issue19470 closed by r.david.murray #20146: UserDict module docs link is obsolete http://bugs.python.org/issue20146 closed by ned.deily #20199: status of module_for_loader and utils._module_to_load http://bugs.python.org/issue20199 closed by brett.cannon #20227: Argument Clinic: rename arguments in generated C? http://bugs.python.org/issue20227 closed by zach.ware #20261: Cannot pickle some objects that have a __getattr__() http://bugs.python.org/issue20261 closed by larry #20429: 3.3.4rc1 install deleted Windows taskbar icons http://bugs.python.org/issue20429 closed by terry.reedy #20484: calling pydoc.Helper()('modules') in the test suite sometimes http://bugs.python.org/issue20484 closed by eric.snow #20501: fileinput module will read whole file into memory when using f http://bugs.python.org/issue20501 closed by serhiy.storchaka #20535: run_tests.py: Work around issues 20355 and 20361 http://bugs.python.org/issue20535 closed by serhiy.storchaka #20568: Pass --default-install to ensurepip in the Windows installers http://bugs.python.org/issue20568 closed by python-dev #20570: Bundle pip 1.5.3 in Python 3.4rc2 http://bugs.python.org/issue20570 closed by larry #20628: Improve doc for csv.DictReader 'fieldnames' parameter http://bugs.python.org/issue20628 closed by r.david.murray #20637: Support key-sharing dictionaries in subclasses http://bugs.python.org/issue20637 closed by pitrou #20641: Python installer needs elevated rights to install pip http://bugs.python.org/issue20641 closed by loewis #20650: asyncio.BaseEventLoop.run_in_executor docs have awkward wordin http://bugs.python.org/issue20650 closed by brett.cannon #20677: Minor typo in enum docs http://bugs.python.org/issue20677 closed by ezio.melotti #20679: 3.4 cherry-pick: 587fd4b91120 improve Enum subclass behavior http://bugs.python.org/issue20679 closed by larry #20690: IDLE Indents convert to spaces and then throws error http://bugs.python.org/issue20690 closed by terry.reedy #20714: Allow for ]]> in CDATA in minidom http://bugs.python.org/issue20714 closed by loewis #20715: 3.4 cherry-pick: 2000c27ebe80 inspect: Fix getfullargspec to s http://bugs.python.org/issue20715 closed by larry #20721: 3.4 cherry-pick: 005d0678f93c Update pip to 1.5.4 http://bugs.python.org/issue20721 closed by larry #20723: Make test (Python 3.3.4) http://bugs.python.org/issue20723 closed by ned.deily #20724: 3.4 cherry-pick: d6aa3fa646e2 inspect.signature: Check for fun http://bugs.python.org/issue20724 closed by larry #20725: Fail to build on Windows x64 with VS Express http://bugs.python.org/issue20725 closed by zach.ware #20730: Typo in idlelib.GrepDialog http://bugs.python.org/issue20730 closed by terry.reedy #20731: Python 3.3.4: SyntaxError with correct source code encoding # http://bugs.python.org/issue20731 closed by loewis #20732: Custom logging formatter doesnt work in 3.3.4 http://bugs.python.org/issue20732 closed by vinay.sajip #20733: Typo in itertools docs - "itertool-functions" http://bugs.python.org/issue20733 closed by rhettinger #20734: 3.4 cherry-pick: 13edfab6c3c0 disable 2 pydoc tests http://bugs.python.org/issue20734 closed by larry #20735: Documentation: remove stringprep deprecation mark in docs http://bugs.python.org/issue20735 closed by python-dev #20738: 3.4 cherry-pick: 7b80f57f904e fix 20641 http://bugs.python.org/issue20738 closed by larry #20740: Remove invalid number from squares in introduction section http://bugs.python.org/issue20740 closed by ezio.melotti #20743: test_tcl memory leak http://bugs.python.org/issue20743 closed by pitrou #20755: 3.3.4: doc build fails on Sphinx < 1.2 http://bugs.python.org/issue20755 closed by python-dev #20757: 3.4rc2 Traceback on Windows pip uninstall http://bugs.python.org/issue20757 closed by python-dev #20759: unittest.mock documentation typos http://bugs.python.org/issue20759 closed by python-dev #20763: old sys.path_hooks importer does not work with Python 3.4.0rc1 http://bugs.python.org/issue20763 closed by brett.cannon #20764: os.walk recurses down even with dirnames deleted http://bugs.python.org/issue20764 closed by ned.deily #20765: Pathlib docs fail to mention with_name, with_suffix http://bugs.python.org/issue20765 closed by pitrou #20771: spam http://bugs.python.org/issue20771 closed by zach.ware #20772: Spam http://bugs.python.org/issue20772 closed by berker.peksag #20775: Modifications to global variables ignored after instantiating http://bugs.python.org/issue20775 closed by Naftali.Harris #20777: PyArg_ParseTupleAndKeywords does not respect arguments format. http://bugs.python.org/issue20777 closed by Claymore #20778: ModuleFinder.load_module skips incorrect number of bytes in py http://bugs.python.org/issue20778 closed by brett.cannon #20781: BZ2File doesn't decompress some .bz2 files correctly http://bugs.python.org/issue20781 closed by serhiy.storchaka #20783: bytearray init fails when \x00 is present http://bugs.python.org/issue20783 closed by bsder #20790: Make sure exec_module() implementations are documented http://bugs.python.org/issue20790 closed by brett.cannon #20791: copy.copy(bytes) is slow http://bugs.python.org/issue20791 closed by pitrou #20793: locale.setlocale() http://bugs.python.org/issue20793 closed by ned.deily #20794: ImportError: Bad magic number in .pyc file http://bugs.python.org/issue20794 closed by ned.deily #20795: Spam http://bugs.python.org/issue20795 closed by berker.peksag #20796: Test failures when running with PYTHONDONTWRITEBYTECODE http://bugs.python.org/issue20796 closed by python-dev #20798: Reversed order in testtools messages http://bugs.python.org/issue20798 closed by r.david.murray #20801: WindowsError: [Error 2] The system cannot find the file specif http://bugs.python.org/issue20801 closed by ned.deily #20802: AttributeError: 'NoneType' object has no attribute 'returncode http://bugs.python.org/issue20802 closed by ned.deily #20805: Error in 3.3 Tutorial http://bugs.python.org/issue20805 closed by r.david.murray

1 0

Re: [Python-Dev] [PATCH] unicode subtypes broken in latest py3k? debug builds
by sppook＠live.com Feb. 28, 2014

Feb. 28, 2014

Sent from my Windows Phone

1 0

GSoC 2014 - Email Module
by Surya Feb. 27, 2014

Feb. 27, 2014

Hey there, I am Surya, studying final year of Engineering. I have looked into Core Python's ideas list and got interested in Email module. I've been working on Django over the past few years, and now like to work on slightly a different layer of protocols and this idea happened to be it. That said, I have been just using the Email module earlier along with other similar modules and never dwell into the internal protocol standards before. It would be great if someone initially can let me know what documentation I should start reading to get up to the speed and probably bugs related to this idea I can look into. Also, I am looking forward to talk about the project with the mentor! Thanks Surya <https://surya-k.appspot.com>

7 8

PEP 461: Adding % formatting to bytes and bytearray -- Final, Take 2
by Ethan Furman Feb. 26, 2014

Feb. 26, 2014

Greetings, all! I think I'm about ready to ask for pronouncement for this PEP, but I would like opinions on the Open Questions question so I can close it. :) Please let me know if anything else needs tweaking. ------------------------------------------------------ PEP: 461 Title: Adding % formatting to bytes and bytearray Version: $Revision$ Last-Modified: $Date$ Author: Ethan Furman <ethan(a)stoneleaf.us> Status: Draft Type: Standards Track Content-Type: text/x-rst Created: 2014-01-13 Python-Version: 3.5 Post-History: 2014-01-14, 2014-01-15, 2014-01-17, 2014-02-22 Resolution: Abstract ======== This PEP proposes adding % formatting operations similar to Python 2's ``str`` type to ``bytes`` and ``bytearray`` [1]_ [2]_. Rationale ========= While interpolation is usually thought of as a string operation, there are cases where interpolation on ``bytes`` or ``bytearrays`` make sense, and the work needed to make up for this missing functionality detracts from the overall readability of the code. Motivation ========== With Python 3 and the split between ``str`` and ``bytes``, one small but important area of programming became slightly more difficult, and much more painful -- wire format protocols [3]_. This area of programming is characterized by a mixture of binary data and ASCII compatible segments of text (aka ASCII-encoded text). Bringing back a restricted %-interpolation for ``bytes`` and ``bytearray`` will aid both in writing new wire format code, and in porting Python 2 wire format code. Overriding Principles ===================== In order to avoid the problems of auto-conversion and Unicode exceptions that could plague Python 2 code, :class:`str` objects will not be supported as interpolation values [4]_ [5]_. Proposed semantics for ``bytes`` and ``bytearray`` formatting ======================================= %-interpolation --------------- All the numeric formatting codes (such as ``%x``, ``%o``, ``%e``, ``%f``, ``%g``, etc.) will be supported, and will work as they do for str, including the padding, justification and other related modifiers. Example:: >>> b'%4x' % 10 b' a' >>> '%#4x' % 10 ' 0xa' >>> '%04X' % 10 '000A' ``%c`` will insert a single byte, either from an ``int`` in range(256), or from a ``bytes`` argument of length 1, not from a ``str``. Example: >>> b'%c' % 48 b'0' >>> b'%c' % b'a' b'a' ``%s`` is restricted in what it will accept:: - input type supports ``Py_buffer`` [6]_? use it to collect the necessary bytes - input type is something else? use its ``__bytes__`` method [7]_ ; if there isn't one, raise a ``TypeError`` Examples: >>> b'%s' % b'abc' b'abc' >>> b'%s' % 3.14 Traceback (most recent call last): ... TypeError: 3.14 has no __bytes__ method, use a numeric code instead >>> b'%s' % 'hello world!' Traceback (most recent call last): ... TypeError: 'hello world' has no __bytes__ method, perhaps you need to encode it? .. note:: Because the ``str`` type does not have a ``__bytes__`` method, attempts to directly use ``'a string'`` as a bytes interpolation value will raise an exception. To use strings they must be encoded or otherwise transformed into a ``bytes`` sequence:: 'a string'.encode('latin-1') ``%a`` will call :func:``ascii()`` on the interpolated value's :func:``repr()``. This is intended as a debugging aid, rather than something that should be used in production. Non-ascii values will be encoded to either ``\xnn`` or ``\unnnn`` representation. Unsupported codes ----------------- ``%r`` (which calls ``__repr__`` and returns a :class:`str`) is not supported. Proposed variations =================== It was suggested to let ``%s`` accept numbers, but since numbers have their own format codes this idea was discarded. It has been proposed to automatically use ``.encode('ascii','strict')`` for ``str`` arguments to ``%s``. - Rejected as this would lead to intermittent failures. Better to have the operation always fail so the trouble-spot can be correctly fixed. It has been proposed to have ``%s`` return the ascii-encoded repr when the value is a ``str`` (b'%s' % 'abc' --> b"'abc'"). - Rejected as this would lead to hard to debug failures far from the problem site. Better to have the operation always fail so the trouble-spot can be easily fixed. Originally this PEP also proposed adding format-style formatting, but it was decided that format and its related machinery were all strictly text (aka ``str``) based, and it was dropped. Various new special methods were proposed, such as ``__ascii__``, ``__format_bytes__``, etc.; such methods are not needed at this time, but can be visited again later if real-world use shows deficiencies with this solution. Open Questions ============== It has been suggested to use ``%b`` for bytes as well as ``%s``. - Pro: clearly says 'this is bytes'; should be used for new code. - Con: does not exist in Python 2.x, so we would have two ways of doing the same thing, ``%s`` and ``%b``, with no difference between them. Footnotes ========= .. [1] http://docs.python.org/2/library/stdtypes.html#string-formatting .. [2] neither string.Template, format, nor str.format are under consideration .. [3] https://mail.python.org/pipermail/python-dev/2014-January/131518.html .. [4] to use a str object in a bytes interpolation, encode it first .. [5] %c is not an exception as neither of its possible arguments are str .. [6] http://docs.python.org/3/c-api/buffer.html examples: ``memoryview``, ``array.array``, ``bytearray``, ``bytes`` .. [7] http://docs.python.org/3/reference/datamodel.html#object.__bytes__ Copyright ========= This document has been placed in the public domain. .. Local Variables: mode: indented-text indent-tabs-mode: nil sentence-end-double-space: t fill-column: 70 coding: utf-8 End:

13 49

Python Remote Code Execution in socket.recvfrom_into()
by Christian Heimes Feb. 26, 2014

Feb. 26, 2014

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Hi, this looks pretty serious -- and it caught me off guard, too. :( https://www.trustedsec.com/february-2014/python-remote-code-execution-socke… Next time please inform the Python Security Response Team about any and all issues that are related to buffer overflows or similar bugs. In fact please drop a note about anything that even remotely look like an exploitable issue. Even public bug reports should be forwarded to PSRT. I have requested a CVE number. How about security releases? The upcoming 3.3 and 3.4 release should contain the fix (not verified yet). Python 2.7 to 3.2 will need a security release, though. Regards Christian -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCgAGBQJTDEi1AAoJEMeIxMHUVQ1FdAwP/j36bioIzz+kFvX9AEo2Bxtq H+JsvRxiWHJrXLG0YUf1AolW+s92/2dRAYLq86DQa7PK2rvrqR4bQUOP+fLi9hdT 5b9YF4mHhBtte9lTDwESYw4IXtoOz4gbhXpY/dGGLjiEeWYNgRl40xSZYXf6cZfR okRRE0c6EZ9WnAYWl1vW1oUzPjua0KOpVOhvabog/YNSPL3SW8shWANpu0fg/n+G guBYTP90pgUEz7Jc20xeVAB9BeZoC/jjDPv1QRMu+PWjyFeaI4iLdNe3loRXBYy1 xmzHxQACzQR45lxAzCoBwBopC49JIF7o7pnTBrY9id9j0yRMAPC/N1uQCceLO1yc GoKardxzUT9IX++yfLTOYwdGnpXDQeXUbHAImcWNGMN8QfsWUFBezPmqKM7tfTNR I/khqTaLPewr58z4d/erfJ5wSEHVdyWASmUWGniS9jjfFNVBDNA2pSPBCP9TJhK5 30BOnKB+MMNG+LCe5chiQOyKje/pbfwrEwwrdiJYCOSXK+w/hbPClNBBq4w9XXVk sIIk5xO1IZ4rMG/YLkg9vaWzn7Yi6O0GJXOmQWp+22kYwaQK+3l6qqSSo2laMVN8 c6sLFng3loO1v3SDO0AOTTU2VcdsS0SdYLkEXMwHK/tRWeXWrwC5HrYnFS0Hu0iI EQlaImb433lu8mHrvPEx =K5ZL -----END PGP SIGNATURE-----

13 28

Re: [Python-Dev] [Python-checkins] cpython: whatsnew: DynanicClassAttribute (#19030), Py_SetStandardStreamEncoding (#16129)
by Nick Coghlan Feb. 25, 2014

Feb. 25, 2014

On 26 Feb 2014 07:04, "r.david.murray" <python-checkins(a)python.org> wrote: > > http://hg.python.org/cpython/rev/4cd620d8c3f6 > changeset: 89392:4cd620d8c3f6 > user: R David Murray <rdmurray(a)bitdance.com> > date: Tue Feb 25 16:03:14 2014 -0500 > summary: > whatsnew: DynanicClassAttribute (#19030), Py_SetStandardStreamEncoding (#16129) > > Adding missing docs for DynamicClassAttribute by copying the docstring. The > doc entry could stand some expansion, which I will note on the issue. > > files: > Doc/library/types.rst | 21 +++++++++++++++++++++ > Doc/whatsnew/3.4.rst | 17 +++++++++++++++++ > 2 files changed, 38 insertions(+), 0 deletions(-) > > > diff --git a/Doc/library/types.rst b/Doc/library/types.rst > --- a/Doc/library/types.rst > +++ b/Doc/library/types.rst > @@ -15,6 +15,9 @@ > Python interpreter, but not exposed as builtins like :class:`int` or > :class:`str` are. > > +Finally, it provides some additional type-related utility classes and functions > +that are not fundamental enough to be builtins. > + > > Dynamic Type Creation > --------------------- > @@ -220,6 +223,9 @@ > Return a new view of the underlying mapping's values. > > > +Additional Utility Classes and Functions > +---------------------------------------- > + > .. class:: SimpleNamespace > > A simple :class:`object` subclass that provides attribute access to its > @@ -246,3 +252,18 @@ > instead. > > .. versionadded:: 3.3 > + > + > +.. function:: DynamicClassAttribute(fget=None, fset=None, fdel=None, doc=None) > + > + Route attribute access on a class to __getattr__. > + > + This is a descriptor, used to define attributes that act differently when > + accessed through an instance and through a class. Instance access remains > + normal, but access to an attribute through a class will be routed to the > + class's __getattr__ method; this is done by raising AttributeError. > + > + This allows one to have properties active on an instance, and have virtual > + attributes on the class with the same name (see Enum for an example). > + > + .. versionadded:: 3.4 > diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst > --- a/Doc/whatsnew/3.4.rst > +++ b/Doc/whatsnew/3.4.rst > @@ -1270,6 +1270,17 @@ > :issue:`1565525`). > > > +types > +----- > + > +A new :func:`~types.DynamicClassAttribute` descriptor provides a way to define > +an attribute that acts normally when looked up through an instance object, but > +which is routed to the *class* ``__getattr__`` when looked up through the > +class. This allows one to have properties active on a class, and have virtual > +attributes on the class with the same name (see :mod:`Enum` for an example). > +(Contributed by Ethan Furman in :issue:`19030`.) > + > + > urllib > ------ > > @@ -1512,6 +1523,12 @@ > object allocator have been silenced. (Contributed by Dhiru Kholia in > :issue:`18596`.) > > +* New function :c:func:`Py_SetStandardStreamEncoding` allows an application > + that is embedding Python to do the equivalent of setting > + :envvar:`PYTHONIOENCODING`. Its arguments override the equivalent > + values from :envvar:`PYTHONIOENCODING` if it exists. (Contributed > + by Bastien Montagne and Nick Coghlan in :issue:`16129`.) > + There was an existing entry for this one: second bullet under http://docs.python.org/dev/whatsnew/3.4.html#other-build-and-c-api-changes Cheers, Nick. > > .. _other-improvements-3.4: > > > -- > Repository URL: http://hg.python.org/cpython > > _______________________________________________ > Python-checkins mailing list > Python-checkins(a)python.org > https://mail.python.org/mailman/listinfo/python-checkins >

1 0

Running 2.7 tests on OS X
by Rik Feb. 25, 2014

Feb. 25, 2014

I want to try to submit a patch for 2.7, but I don't know how to run the tests for the 2.7 branch. `./configure` doesn't seem to create a `python.exe` file on the 2.7 branch on OS X Mavericks, and I do need this file according to this guide: http://docs.python.org/devguide/ Anybody know how I should do this?

3 2

Add Py_REPLACE and Py_XREPLACE macros
by Serhiy Storchaka Feb. 25, 2014

Feb. 25, 2014

The Py_CLEAR macros is used as safe alternative for following unsafe idiomatic code: Py_XDECREF(ptr); ptr = NULL; But other unsafe idiomatic code is widely used in the sources: Py_XDECREF(ptr); ptr = new_value; Every occurrence of such code is potential bug for same reasons as for Py_CLEAR. It was offered [1] to introduce new macros Py_REPLACE and Py_XREPLACE for safe replace with Py_DECREF and Py_XDECREF respectively. Automatically generated patch contains about 50 replaces [2]. [1] http://bugs.python.org/issue16447 [2] http://bugs.python.org/issue20440

2 7

Re: [Python-Dev] cpython: whatsnew: textwrap.shorten.
by Serhiy Storchaka Feb. 25, 2014

Feb. 25, 2014

23.02.14 18:42, r.david.murray написав(ла): > http://hg.python.org/cpython/rev/4d615ab37804 > changeset: 89337:4d615ab37804 > user: R David Murray <rdmurray(a)bitdance.com> > date: Sun Feb 23 10:22:07 2014 -0500 > summary: > whatsnew: textwrap.shorten. > > Also add the missing TextWrapper.shorten method doc. There is no the TextWrapper.shorten method. The textwrap.shorten() function is implemented via new max_lines parameter.

1 0

GSOC 2014 - IDLE Project
by Saimadhav Heblikar Feb. 25, 2014

Feb. 25, 2014

Hi, Saimadhav Heblikar here.I would like to express my interest in working on IDLE improvement project as a part of Google Summer of Code 2014 for Python Core projects under the Python Software Foundation.I am currently a freshman Computer Science undergraduate student at PESIT , Bangalore. Similar to most Python programmers, i started my python journey on IDLE,and once i came to know that IDLE was one of the prospective projects,i knew this was great opportunity to give back to IDLE and the community as whole. I have created an account on the bug tracker and submitted the PSF contributor agreement.My username on the tracker is sahutd(saimadhav heblikar) http://bugs.python.org/user18939. I use the same nickname on the IRC channel. To enhance my understanding of the codebase, i have submitted few patches, some which have been committed http://bugs.python.org/issue20634 http://bugs.python.org/issue20677 and some which are under review http://bugs.python.org/issue20403 (IDLE related) http://bugs.python.org/issue20640 (Adds IDLE unittest) http://bugs.python.org/issue20451 http://bugs.python.org/issue20466 -------------- Coming to the point,as the theme of the project which i am interested in and the theme for the IDLE GSOC `13 projects by Jayakrishnan and Phil Webster are the same, i have a few questions to ask the python mentors/devs. 1.What will be the scope of the idle gsoc 2014?By scope,i want to know,whether i will be expected to continue the work done in 2013, or start afresh. 2. If i were to start afresh,i have explored the following two possibilities, a)Code recommender feature for IDLE - Similar to the feature in Eclipse but made for Python(would work from the shell or in IDLE).As an example of how it would work,we could think of it as a web api, which would return information about most used functions in a module.It would help beginners and experts alike to make better use of their dev time.It would also go a long way in making python even more social.If any questions on this proposal,i am looking forward to answer it. (I would like to know the community's opinion on this,GSOC or otherwise)If this generates a positive response, i will immediately come up with a plan to develop it. b)Working on a project to integrate a passive checker like pyflakes with the ability to highlight and possibly correct errors on-the-fly and on demand.Automatically integrate the above feature to work on folders/directories, selection of files ,projects etc. 2.If i were to continue the work done in gsoc 2013,would it involve a)building on features for PEP8(or other style checker,though after reading http://bugs.python.org/issue18704 i am inclined to believe it is not a must have atm. ) b)extending the unittest framework. Would i be completing(or to an extent) , the missing tests in idlelib/idle_test?What would be the priorities? c)features which don't seem to have been completed from gsoc 2013 like line numbering,improving cursor behavior and making right click more intuitive.(Anything gsoc 13 related which i have missed out?) -------------- I believe from the abstracts of GSOC 13 projects which were selected,that , i am expected to increase test coverage for idle AND add a new feature . Is my understanding correct? I would like to know whom i can contact(mentors) if have questions about the proposal writing and/or other technical questions relating to GSOC 14. I would also like to come up with overall outline based on your feedback so that it can critiqued before i submit the application on the google page. Awaiting your replies. Saimadhav Heblikar(sahutd) Bug Tracker username: sahutd (http://bugs.python.org/user18939) Email : saimadhavheblikar(a)gmail.com Github : https://github.com/sahutd

1 1