Mailman 3 January 2013 - Python-Dev

FYI - wiki.python.org compromised
by Brian Curtin 08 Jan '13

08 Jan '13

On December 28th, an unknown attacker used a previously unknown remote code exploit on http://wiki.python.org/. The attacker was able to get shell access as the "moin" user, but no other services were affected. Some time later, the attacker deleted all files owned by the "moin" user, including all instance data for both the Python and Jython wikis. The attack also had full access to all MoinMoin user data on all wikis. In light of this, the Python Software Foundation encourages all wiki users to change their password on other sites if the same one is in use elsewhere. We apologize for the inconvenience and will post further news as we bring the new and improved wiki.python.org online. If you have any questions about this incident please contact jnoller(a)python.org. Thank you for your patience.

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Accessing value stack
by Dima Tisnek 07 Jan '13

07 Jan '13

Hi, is it possible to access the values stored on the stack in Python stack machine from Python? As in, consider expression: tmp = foo() + bar() At the point in time when bar() is called, foo() already returned something, and that value is on top of the stack in that frame, a few steps after bar() returns, that value is added to bar and is lost. I would very much like to be able to read (and maybe even change) that ephemeral value. If it is absolutely not possible to achieve from Pythonland, I welcome pointers on how to write a C/cython/types extension to achieve this. Thanks, d.

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FYI: don't CC the peps mailing list
by Brett Cannon 07 Jan '13

07 Jan '13

Since this has happened for the second time in the past month, I want to prevent a trend from starting here. Please do not CC the peps mailing list on any discussions as it makes it impossible to know what emails are about an actual update vs. people replying to some discussion which in no way affects the PEP editors. Emails to the peps list should deal only with adding/updating peps and only between the PEP editors and PEP authors. Lennart, I tossed all emails that got held up in moderation, so please check that the latest version of your PEP is in as you want, else send a patch to the peps list directly (inlined text is not as easy to work with).

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Why no venv in existing directory?
by Stefan H. Holek 07 Jan '13

07 Jan '13

Hi All, While trying 3.3 beta I found that I cannot use my favorite virtualenv pattern with pyvenv: $ virtualenv . Installing.....done. $ pyvenv . Error: Directory exists: /Users/stefan/sandbox/foo I appreciate that this behavior is documented and was in the PEP from the start: "If the target directory already exists an error will be raised, unless the --clear or --upgrade option was provided." Still, I am curious what the rationale behind this restriction is. For me, being able to "bless" an existing directory with a virtualenv has always been one of its attractions. Thanks, Stefan -- Stefan H. Holek stefan(a)epy.co.at

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Re: [Python-Dev] peps: Updates in response to Barry Warsaw's feedback
by Antoine Pitrou 06 Jan '13

06 Jan '13

On Sun, 6 Jan 2013 08:25:44 +0100 (CET) nick.coghlan <python-checkins(a)python.org> wrote: > http://hg.python.org/peps/rev/3eb7e4b587da > changeset: 4654:3eb7e4b587da > user: Nick Coghlan <ncoghlan(a)gmail.com> > date: Sun Jan 06 17:22:45 2013 +1000 > summary: > Updates in response to Barry Warsaw's feedback > > files: > pep-0432.txt | 217 ++++++++++++++++++++++++++------------ > 1 files changed, 146 insertions(+), 71 deletions(-) > > > diff --git a/pep-0432.txt b/pep-0432.txt > --- a/pep-0432.txt > +++ b/pep-0432.txt > @@ -40,19 +40,21 @@ > well-defined phases during the startup sequence: > > * Pre-Initialization - no interpreter available > -* Initialization - interpreter partially available > -* Initialized - full interpreter available, __main__ related metadata > +* Initializing - interpreter partially available > +* Initialized - interpreter available, __main__ related metadata > incomplete > -* Main Execution - optional state, __main__ related metadata populated, > - bytecode executing in the __main__ module namespace > +* Main Execution - __main__ related metadata populated, bytecode > + executing in the __main__ module namespace (embedding applications > + may choose not to use this phase) Since we are here, I would bikeshed a little and point out that "initializing" and "initialiazed" are states, not phases. Either way, the nomenclature should be consistent. Regards Antoine.

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PEP 3156 - Asynchronous IO Support Rebooted
by Guido van Rossum 05 Jan '13

05 Jan '13

Dear python-dev *and* python-ideas, I am posting PEP 3156 here for early review and discussion. As you can see from the liberally sprinkled TBD entries it is not done, but I am about to disappear on vacation for a few weeks and I am reasonably happy with the state of things so far. (Of course feedback may change this. :-) Also, there has already been some discussion on python-ideas (and even on Twitter) so I don't want python-dev to feel out of the loop -- this *is* a proposal for a new standard library module. (But no, I haven't picked the module name yet. :-) There's an -- also incomplete -- reference implementation at http://code.google.com/p/tulip/ -- unlike the first version of tulip, this version actually has (some) unittests. Let the bikeshedding begin! (Oh, happy holidays too. :-) -- --Guido van Rossum (python.org/~guido)

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test failed: test_urlwithfrag
by Elli Lola 05 Jan '13

05 Jan '13

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Please review simple patch for IDLE documentation last updated 11/28/2012
by Todd V Rovito 04 Jan '13

04 Jan '13

Greetings, I submitted a simple patch for updates to IDLE's documentation http://bugs.python.org/issue5066 and it has not been reviewed by an official Python developer. Since it is now been over 1month since last update can somebody please review and or commit? I did get some comments from another contributor and updated the patch based on those comments. The original bug was opened in 2009 and the IDLE documentation is out of date with undocumented menu options and inconsistencies between the help file and the HTML documentation. I hate to be pushy but I would like to see some progress made on IDLE. Thanks for the support. Sent from my iPad

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Range information in the AST -- once more
by Sven Brauch 04 Jan '13

04 Jan '13

Hello! I'm writing a static language analyzer for an IDE which reuses the CPython parser (for parsing) [1]. Two years ago, I asked about a few changes to be made to the AST provided by CPython, but the discussion thread dried up before a definite decision was made. I decided to just copy the parser code to my project and make the necessary changes there back then. I'm bringing this up again now since after my project has seen its first release recently, packagers are (understandably) a bit unhappy about the python fork residing in its repository. I would really like to get rid of that fork and link against the vanilla libpython instead. There's two things which are at the very least required to make this work: 1. The col_offset and lineno of an Attribute must give the beginning of the word that names the attribute, not the beginning of the expression. Example: In "foo.bar.baz", the col_offset of the Attribute belonging to "bar" says "0" currently, it would need to be "4". 2. Column offsets and line numbers would need to be available for function arguments (those with and without stars), and for alias nodes. In total, this requires very little change to the existing code, "a few tens of lines changed at most" order of magnitude; those are mostly trivial changes. For what I can tell, the impact on existing code using the AST stuff will be about zero. Even if there was some really obscure case where the change would matter, porting would only require about three lines of python code. Additionally, there's a few more things which would be useful to have available from the AST (namely the ranges of class and function names when they are defined -- currently only the start of the first decorator is available), but since those are reasonably easy to work around it's not that important. It would still be nice tough. If you think this is a reasonable suggestion then I'll be happy to provide a patch for more detailed discussion. Greetings, Sven ________ [1] See https://projects.kde.org/kdev-python

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Summary of Python tracker Issues
by Python tracker 04 Jan '13

04 Jan '13

ACTIVITY SUMMARY (2012-12-28 - 2013-01-04) 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 3817 (-17) closed 24823 (+78) total 28640 (+61) Open issues with patches: 1667 Issues opened (44) ================== #8952: Doc/c-api/arg.rst: fix documentation of number formats http://bugs.python.org/issue8952 reopened by georg.brandl #16748: Make CPython test package discoverable http://bugs.python.org/issue16748 reopened by serhiy.storchaka #16803: Make test_importlib run tests under both _frozen_importlib and http://bugs.python.org/issue16803 opened by brett.cannon #16804: python3 -S -m site fails http://bugs.python.org/issue16804 opened by pitrou #16805: when building docs on Debian 7 --> ERROR: Error in "note" dire http://bugs.python.org/issue16805 opened by tshepang #16806: col_offset is -1 and lineno is wrong for multiline string expr http://bugs.python.org/issue16806 opened by carsten.klein(a)axn-software.de #16807: argparse group nesting lost on inheritance http://bugs.python.org/issue16807 opened by Dougal.Sutherland #16808: inspect.stack() should return list of named tuples http://bugs.python.org/issue16808 opened by danielsh #16809: Tk 8.6.0 introduces TypeError. (Tk 8.5.13 works) http://bugs.python.org/issue16809 opened by serwy #16811: email.message.Message flatten dies of list index out of range http://bugs.python.org/issue16811 opened by HJarausch #16812: os.symlink can return wrong FileExistsError/WindowsError infor http://bugs.python.org/issue16812 opened by IAmTheClaw #16817: test___all__ affects other tests by doing too much importing http://bugs.python.org/issue16817 opened by eli.bendersky #16821: bundlebuilder broken in 2.7 http://bugs.python.org/issue16821 opened by barry-scott #16822: execv (et al.) should invoke atexit handlers before executing http://bugs.python.org/issue16822 opened by nedbat #16823: Python crashes on running tkinter code with threads http://bugs.python.org/issue16823 opened by Sarbjit.singh #16826: Don't check for PYTHONCASEOK if interpreter started with -E http://bugs.python.org/issue16826 opened by brett.cannon #16827: Remove the relatively advanced content from section 2 in tutor http://bugs.python.org/issue16827 opened by ramchandra.apte #16829: IDLE on POSIX can't print filenames with spaces http://bugs.python.org/issue16829 opened by Rod.Nayfield #16830: Add skip_host and skip_accept_encoding to httplib/http.client http://bugs.python.org/issue16830 opened by kanzure #16831: Better docs for ABCMeta.__subclasshook__ http://bugs.python.org/issue16831 opened by ncoghlan #16832: Expose cache validity checking support in ABCMeta http://bugs.python.org/issue16832 opened by ncoghlan #16834: ioctl mutate_flag behavior in regard to the buffer size limit http://bugs.python.org/issue16834 opened by Yuval.Weinbaum #16835: Update PEP 399 to allow for test discovery http://bugs.python.org/issue16835 opened by brett.cannon #16836: configure script disables support for IPv6 on a system where I http://bugs.python.org/issue16836 opened by schmir #16837: Number ABC can be instantiated http://bugs.python.org/issue16837 opened by belopolsky #16840: Tkinter doesn't support large integers http://bugs.python.org/issue16840 opened by serhiy.storchaka #16842: Allow to override a function signature for pydoc with a docstr http://bugs.python.org/issue16842 opened by serhiy.storchaka #16843: sporadic test_sched failure http://bugs.python.org/issue16843 opened by pitrou #16845: warnings.simplefilter should validate input http://bugs.python.org/issue16845 opened by seberg #16846: relative import solution http://bugs.python.org/issue16846 opened by Fixpythonbugs #16848: Mac OS X: python-config --ldflags and location of Python.frame http://bugs.python.org/issue16848 opened by samueljohn #16849: Element.{get,iter} doesn't handle keyword arguments when using http://bugs.python.org/issue16849 opened by kushou #16850: Atomic open + close-and-exec http://bugs.python.org/issue16850 opened by haypo #16851: ismethod and isfunction methods error http://bugs.python.org/issue16851 opened by wdanilo #16852: Fix test discovery for test_genericpath.py http://bugs.python.org/issue16852 opened by zach.ware #16853: add a Selector to the select module http://bugs.python.org/issue16853 opened by neologix #16854: usage() is not defined in Lib/test/regrtest.py http://bugs.python.org/issue16854 opened by serhiy.storchaka #16855: traceback module leaves off module name in last line of format http://bugs.python.org/issue16855 opened by waltermundt #16858: tarfile silently hides errors http://bugs.python.org/issue16858 opened by mmarkk #16859: tarfile.TarInfo.fromtarfile does not check read() return value http://bugs.python.org/issue16859 opened by mmarkk #16860: Use O_CLOEXEC in the tempfile module http://bugs.python.org/issue16860 opened by haypo #16861: Portion of code example not highlighted in collections doc http://bugs.python.org/issue16861 opened by ramchandra.apte #16862: FAQ has outdated information about Stackless http://bugs.python.org/issue16862 opened by ramchandra.apte #16863: Argparse tutorial outdated http://bugs.python.org/issue16863 opened by Charlie.Dimino Most recent 15 issues with no replies (15) ========================================== #16861: Portion of code example not highlighted in collections doc http://bugs.python.org/issue16861 #16859: tarfile.TarInfo.fromtarfile does not check read() return value http://bugs.python.org/issue16859 #16855: traceback module leaves off module name in last line of format http://bugs.python.org/issue16855 #16852: Fix test discovery for test_genericpath.py http://bugs.python.org/issue16852 #16845: warnings.simplefilter should validate input http://bugs.python.org/issue16845 #16834: ioctl mutate_flag behavior in regard to the buffer size limit http://bugs.python.org/issue16834 #16832: Expose cache validity checking support in ABCMeta http://bugs.python.org/issue16832 #16823: Python crashes on running tkinter code with threads http://bugs.python.org/issue16823 #16807: argparse group nesting lost on inheritance http://bugs.python.org/issue16807 #16803: Make test_importlib run tests under both _frozen_importlib and http://bugs.python.org/issue16803 #16795: Patch: some changes to AST to make it more useful for static l http://bugs.python.org/issue16795 #16786: argparse doesn't offer localization interface for "version" ac http://bugs.python.org/issue16786 #16776: Document PyCFunction_New and PyCFunction_NewEx functions http://bugs.python.org/issue16776 #16762: test_subprocess failure on OpenBSD/NetBSD buildbots http://bugs.python.org/issue16762 #16754: Incorrect shared library extension on linux http://bugs.python.org/issue16754 Most recent 15 issues waiting for review (15) ============================================= #16860: Use O_CLOEXEC in the tempfile module http://bugs.python.org/issue16860 #16853: add a Selector to the select module http://bugs.python.org/issue16853 #16852: Fix test discovery for test_genericpath.py http://bugs.python.org/issue16852 #16850: Atomic open + close-and-exec http://bugs.python.org/issue16850 #16849: Element.{get,iter} doesn't handle keyword arguments when using http://bugs.python.org/issue16849 #16843: sporadic test_sched failure http://bugs.python.org/issue16843 #16840: Tkinter doesn't support large integers http://bugs.python.org/issue16840 #16837: Number ABC can be instantiated http://bugs.python.org/issue16837 #16836: configure script disables support for IPv6 on a system where I http://bugs.python.org/issue16836 #16835: Update PEP 399 to allow for test discovery http://bugs.python.org/issue16835 #16830: Add skip_host and skip_accept_encoding to httplib/http.client http://bugs.python.org/issue16830 #16826: Don't check for PYTHONCASEOK if interpreter started with -E http://bugs.python.org/issue16826 #16808: inspect.stack() should return list of named tuples http://bugs.python.org/issue16808 #16807: argparse group nesting lost on inheritance http://bugs.python.org/issue16807 #16806: col_offset is -1 and lineno is wrong for multiline string expr http://bugs.python.org/issue16806 Top 10 most discussed issues (10) ================================= #16076: xml.etree.ElementTree.Element and xml.etree.ElementTree.TreeBu http://bugs.python.org/issue16076 20 msgs #16748: Make CPython test package discoverable http://bugs.python.org/issue16748 18 msgs #16801: Preserve original representation for integers / floats in docs http://bugs.python.org/issue16801 17 msgs #16850: Atomic open + close-and-exec http://bugs.python.org/issue16850 13 msgs #16805: when building docs on Debian 7 --> ERROR: Error in "note" dire http://bugs.python.org/issue16805 11 msgs #14621: Hash function is not randomized properly http://bugs.python.org/issue14621 9 msgs #16853: add a Selector to the select module http://bugs.python.org/issue16853 9 msgs #16047: Tools/freeze no longer works in Python 3 http://bugs.python.org/issue16047 7 msgs #16061: performance regression in string replace for 3.3 http://bugs.python.org/issue16061 7 msgs #16591: RUNSHARED wrong for OSX no framework http://bugs.python.org/issue16591 7 msgs Issues closed (74) ================== #2405: Drop w9xpopen and all dependencies http://bugs.python.org/issue2405 closed by brian.curtin #7320: Unable to load external modules on build slave with debug pyth http://bugs.python.org/issue7320 closed by brian.curtin #7651: Python3: guess text file charset using the BOM http://bugs.python.org/issue7651 closed by haypo #9561: distutils: set encoding to utf-8 for input and output files http://bugs.python.org/issue9561 closed by haypo #9586: "warning: comparison between pointer and integer" in multiproc http://bugs.python.org/issue9586 closed by sbt #9644: PEP 383: os.statvfs() does not accept surrogateescape argument http://bugs.python.org/issue9644 closed by haypo #10527: multiprocessing.Pipe problem: "handle out of range in select() http://bugs.python.org/issue10527 closed by giampaolo.rodola #10657: os.lstat/os.stat/os.fstat don't set st_dev (st_rdev) on Window http://bugs.python.org/issue10657 closed by brian.curtin #10848: Move test.regrtest from getopt to argparse http://bugs.python.org/issue10848 closed by brett.cannon #10951: gcc 4.6 warnings http://bugs.python.org/issue10951 closed by haypo #11242: urllib.request.url_open() doesn't support SSLContext http://bugs.python.org/issue11242 closed by haypo #11726: linecache becomes specific to Python scripts in Python 3 http://bugs.python.org/issue11726 closed by haypo #11769: test_notify() of test_threading hang on "x86 XP-4 3.x": http://bugs.python.org/issue11769 closed by haypo #11925: test_ttk_guionly.test_traversal() failed on "x86 Windows7 3.x" http://bugs.python.org/issue11925 closed by haypo #12103: Document how to use open with os.O_CLOEXEC http://bugs.python.org/issue12103 closed by christian.heimes #12112: The new packaging module should not use the locale encoding http://bugs.python.org/issue12112 closed by haypo #12309: os.environ was modified by test_packaging http://bugs.python.org/issue12309 closed by haypo #12336: tkinter.test.test_ttk.test_widgets.test_select() failure on Fr http://bugs.python.org/issue12336 closed by haypo #12453: test_import.test_failing_import_sticks() sporadic failures http://bugs.python.org/issue12453 closed by haypo #12466: test_subprocess.test_close_fds() sporadic failures on Mac OS X http://bugs.python.org/issue12466 closed by haypo #12495: Rewrite InterProcessSignalTests http://bugs.python.org/issue12495 closed by haypo #12858: crypt.mksalt: use ssl.RAND_pseudo_bytes() if available http://bugs.python.org/issue12858 closed by haypo #13059: Sporadic test_multiprocessing failure: IOError("bad message le http://bugs.python.org/issue13059 closed by haypo #13100: sre_compile._optimize_unicode() needs a cleanup http://bugs.python.org/issue13100 closed by haypo #13157: Build Python outside the source directory http://bugs.python.org/issue13157 closed by haypo #13209: Refactor code using unicode_encode_call_errorhandler() in unic http://bugs.python.org/issue13209 closed by haypo #13256: Document and test new socket options http://bugs.python.org/issue13256 closed by haypo #13453: Tests and network timeouts http://bugs.python.org/issue13453 closed by haypo #14057: Speedup sysconfig startup http://bugs.python.org/issue14057 closed by haypo #14372: Fix all invalid usage of borrowed references http://bugs.python.org/issue14372 closed by haypo #15516: exception-handling bug in PyString_Format http://bugs.python.org/issue15516 closed by python-dev #15803: Incorrect docstring on ConfigParser.items() http://bugs.python.org/issue15803 closed by lukasz.langa #16009: Json error messages could provide more information about the e http://bugs.python.org/issue16009 closed by ezio.melotti #16165: sched.scheduler.run() blocks scheduler http://bugs.python.org/issue16165 closed by serhiy.storchaka #16208: getaddrinfo returns wrong results if IPv6 is disabled http://bugs.python.org/issue16208 closed by haypo #16281: TODO in tailmatch(): it does not support backward in all cases http://bugs.python.org/issue16281 closed by python-dev #16367: io.FileIO.readall() is not 64-bit safe on Windows http://bugs.python.org/issue16367 closed by haypo #16455: Decode command line arguments from ASCII on FreeBSD and Solari http://bugs.python.org/issue16455 closed by haypo #16485: FD leaks in aifc module http://bugs.python.org/issue16485 closed by serhiy.storchaka #16486: Add context manager support to aifc module http://bugs.python.org/issue16486 closed by serhiy.storchaka #16541: tk_setPalette doesn't accept keyword parameters http://bugs.python.org/issue16541 closed by serhiy.storchaka #16640: Less code under lock in sched.scheduler http://bugs.python.org/issue16640 closed by serhiy.storchaka #16641: sched.scheduler.enter arguments should not be modifiable http://bugs.python.org/issue16641 closed by serhiy.storchaka #16642: Mention new "kwargs" named tuple parameter in sched module http://bugs.python.org/issue16642 closed by serhiy.storchaka #16645: Wrong test_extract_hardlink() in test_tarfile.py http://bugs.python.org/issue16645 closed by serhiy.storchaka #16674: Faster getrandbits() for small integers http://bugs.python.org/issue16674 closed by serhiy.storchaka #16688: Backreferences make case-insensitive regex fail on non-ASCII s http://bugs.python.org/issue16688 closed by serhiy.storchaka #16747: Remove 'file' type reference from 'iterable' glossary entry http://bugs.python.org/issue16747 closed by ezio.melotti #16749: Fatal Python error: PyEval_RestoreThread: NULL tstate http://bugs.python.org/issue16749 closed by pitrou #16761: Fix int(base=X) http://bugs.python.org/issue16761 closed by serhiy.storchaka #16782: No curses.initwin: Incorrect package docstring for curses http://bugs.python.org/issue16782 closed by asvetlov #16783: sqlite3 accepts strings it cannot (by default) return http://bugs.python.org/issue16783 closed by terry.reedy #16787: asyncore.dispatcher_with_send - increase the send buffer size http://bugs.python.org/issue16787 closed by neologix #16798: DTD not checked http://bugs.python.org/issue16798 closed by terry.reedy #16810: inconsistency in weekday http://bugs.python.org/issue16810 closed by v+python #16813: use paths relative to CPython root in documentation building i http://bugs.python.org/issue16813 closed by chris.jerdonek #16814: use --directory option of make in describing how to build the http://bugs.python.org/issue16814 closed by georg.brandl #16815: Is all OK!! http://bugs.python.org/issue16815 closed by hynek #16816: Bug in hash randomization http://bugs.python.org/issue16816 closed by benjamin.peterson #16818: Couple of mistakes in PEP 431 http://bugs.python.org/issue16818 closed by ezio.melotti #16819: IDLE b"" method completion incorrect http://bugs.python.org/issue16819 closed by serhiy.storchaka #16820: configparser.ConfigParser.clean and .update bugs http://bugs.python.org/issue16820 closed by lukasz.langa #16824: typo in test http://bugs.python.org/issue16824 closed by serhiy.storchaka #16825: all OK!!! http://bugs.python.org/issue16825 closed by neologix #16828: bz2 error on compression of empty string http://bugs.python.org/issue16828 closed by nadeem.vawda #16833: http.client delayed ack / Nagle algorithm optimisation perform http://bugs.python.org/issue16833 closed by pitrou #16838: fail to "from locale import getpreferredencoding" when there's http://bugs.python.org/issue16838 closed by Cravix #16839: segmentation fault when unicode(classic_class_instance) http://bugs.python.org/issue16839 closed by python-dev #16841: Set st_dev on Windows as unsigned long http://bugs.python.org/issue16841 closed by serhiy.storchaka #16844: funcName in logging module for python 2.6 http://bugs.python.org/issue16844 closed by vinay.sajip #16847: sha module broken http://bugs.python.org/issue16847 closed by christian.heimes #16856: Segfault from calling repr() on a dict with a key whose repr r http://bugs.python.org/issue16856 closed by serhiy.storchaka #16857: replace my email address on argparse howto with my website http://bugs.python.org/issue16857 closed by python-dev #1653416: OS X print >> f, "Hello" produces no error on read-only f: nor http://bugs.python.org/issue1653416 closed by ned.deily

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