Mailman 3 September 2012 - Python-Dev

Summary of Python tracker Issues
by Python tracker Sept. 21, 2012

Sept. 21, 2012

ACTIVITY SUMMARY (2012-09-14 - 2012-09-21) 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 3731 (+30) closed 24045 (+25) total 27776 (+55) Open issues with patches: 1650 Issues opened (44) ================== #15945: memoryview + bytes fails http://bugs.python.org/issue15945 opened by exarkun #15947: Assigning new values to instance of pointer types does not che http://bugs.python.org/issue15947 opened by facundobatista #15948: Unchecked return value of I/O functions http://bugs.python.org/issue15948 opened by christian.heimes #15949: docs.python.org not getting updated http://bugs.python.org/issue15949 opened by cjerdonek #15951: string.Formatter returns str for empty unicode template http://bugs.python.org/issue15951 opened by Aleksey.Sivokon #15952: format(value) and value.__format__() behave differently with u http://bugs.python.org/issue15952 opened by cjerdonek #15953: Incorrect some fields declaration in the PyTypeObject document http://bugs.python.org/issue15953 opened by storchaka #15954: No error checking after using of the wcsxfrm() http://bugs.python.org/issue15954 opened by storchaka #15955: gzip, bz2, lzma: add method to get decompressed size http://bugs.python.org/issue15955 opened by christian.heimes #15956: backreference to named group does not work http://bugs.python.org/issue15956 opened by steve.newcomb #15957: README.txt points to broken "contributing" url in python wiki http://bugs.python.org/issue15957 opened by jcd #15958: bytes.join() should allow arbitrary buffer objects http://bugs.python.org/issue15958 opened by pitrou #15961: Missing return value in ``system_message`` http://bugs.python.org/issue15961 opened by malthe #15962: Windows STDIN/STDOUT Redirection is actually FIXED http://bugs.python.org/issue15962 opened by Nacsa.Kristóf #15963: Improve ./configure's support for 32/64-bit debug|release|prof http://bugs.python.org/issue15963 opened by trent #15964: SyntaxError in asdl when building 2.7 with system Python 3 http://bugs.python.org/issue15964 opened by cjerdonek #15966: concurrent.futures: Executor.submit keyword arguments may not http://bugs.python.org/issue15966 opened by mark.dickinson #15967: Slaves don't seem to clean up their /tmp mess if a step fails. http://bugs.python.org/issue15967 opened by trent #15968: Incorporate Tcl/Tk/Tix into the Windows build process http://bugs.python.org/issue15968 opened by jkloth #15969: faulthandler: drop S from dump_tracebacks_later() function nam http://bugs.python.org/issue15969 opened by haypo #15971: Sporadic failure in test_dump_tracebacks_later_file (test_faul http://bugs.python.org/issue15971 opened by ezio.melotti #15972: wrong error message for os.path.getsize http://bugs.python.org/issue15972 opened by jftuga #15973: Segmentation fault on timezone comparison http://bugs.python.org/issue15973 opened by lanhel #15974: Optional compact and colored output for regrest http://bugs.python.org/issue15974 opened by brett.cannon #15976: Inconsistent behavior of search_for_exec_prefix() results in s http://bugs.python.org/issue15976 opened by foutrelis #15977: Memory leak in _ssl.c http://bugs.python.org/issue15977 opened by Daniel.Sommermann #15978: asyncore: included batteries don't fit http://bugs.python.org/issue15978 opened by chrysn #15979: Improve timeit documentation http://bugs.python.org/issue15979 opened by ezio.melotti #15982: asyncore.dispatcher does not handle windows socket error code http://bugs.python.org/issue15982 opened by McNetic #15983: multiprocessing JoinableQueue's join function with timeout http://bugs.python.org/issue15983 opened by legordian #15984: Wrong documentation for PyUnicode_FromObject() http://bugs.python.org/issue15984 opened by storchaka #15986: memoryview: expose 'buf' attribute http://bugs.python.org/issue15986 opened by skrah #15987: Provide a way to compare AST nodes for equality recursively http://bugs.python.org/issue15987 opened by Julian #15988: Inconsistency in overflow error messages of integer argument http://bugs.python.org/issue15988 opened by storchaka #15989: Possible integer overflow of PyLong_AsLong() results http://bugs.python.org/issue15989 opened by storchaka #15990: solidify argument/parameter terminology http://bugs.python.org/issue15990 opened by cjerdonek #15991: BaseHTTPServer with ThreadingMixIn serving wrong data sometime http://bugs.python.org/issue15991 opened by theamk #15992: Strict aliasing violations in Objects/unicodeobject.c http://bugs.python.org/issue15992 opened by mark.dickinson #15993: Windows: 3.3.0-rc2.msi: test_buffer fails http://bugs.python.org/issue15993 opened by skrah #15994: memoryview to freed memory can cause segfault http://bugs.python.org/issue15994 opened by sbt #15996: pow() for complex numbers is rough around the edges http://bugs.python.org/issue15996 opened by mattip #15997: NotImplemented needs to be documented http://bugs.python.org/issue15997 opened by max #15998: Python GUI idle not working http://bugs.python.org/issue15998 opened by sreeni #15999: Using new 'bool' format character http://bugs.python.org/issue15999 opened by storchaka Most recent 15 issues with no replies (15) ========================================== #15994: memoryview to freed memory can cause segfault http://bugs.python.org/issue15994 #15992: Strict aliasing violations in Objects/unicodeobject.c http://bugs.python.org/issue15992 #15991: BaseHTTPServer with ThreadingMixIn serving wrong data sometime http://bugs.python.org/issue15991 #15988: Inconsistency in overflow error messages of integer argument http://bugs.python.org/issue15988 #15987: Provide a way to compare AST nodes for equality recursively http://bugs.python.org/issue15987 #15986: memoryview: expose 'buf' attribute http://bugs.python.org/issue15986 #15984: Wrong documentation for PyUnicode_FromObject() http://bugs.python.org/issue15984 #15982: asyncore.dispatcher does not handle windows socket error code http://bugs.python.org/issue15982 #15976: Inconsistent behavior of search_for_exec_prefix() results in s http://bugs.python.org/issue15976 #15969: faulthandler: drop S from dump_tracebacks_later() function nam http://bugs.python.org/issue15969 #15968: Incorporate Tcl/Tk/Tix into the Windows build process http://bugs.python.org/issue15968 #15962: Windows STDIN/STDOUT Redirection is actually FIXED http://bugs.python.org/issue15962 #15958: bytes.join() should allow arbitrary buffer objects http://bugs.python.org/issue15958 #15955: gzip, bz2, lzma: add method to get decompressed size http://bugs.python.org/issue15955 #15953: Incorrect some fields declaration in the PyTypeObject document http://bugs.python.org/issue15953 Most recent 15 issues waiting for review (15) ============================================= #15999: Using new 'bool' format character http://bugs.python.org/issue15999 #15983: multiprocessing JoinableQueue's join function with timeout http://bugs.python.org/issue15983 #15977: Memory leak in _ssl.c http://bugs.python.org/issue15977 #15973: Segmentation fault on timezone comparison http://bugs.python.org/issue15973 #15972: wrong error message for os.path.getsize http://bugs.python.org/issue15972 #15969: faulthandler: drop S from dump_tracebacks_later() function nam http://bugs.python.org/issue15969 #15966: concurrent.futures: Executor.submit keyword arguments may not http://bugs.python.org/issue15966 #15961: Missing return value in ``system_message`` http://bugs.python.org/issue15961 #15957: README.txt points to broken "contributing" url in python wiki http://bugs.python.org/issue15957 #15956: backreference to named group does not work http://bugs.python.org/issue15956 #15954: No error checking after using of the wcsxfrm() http://bugs.python.org/issue15954 #15953: Incorrect some fields declaration in the PyTypeObject document http://bugs.python.org/issue15953 #15952: format(value) and value.__format__() behave differently with u http://bugs.python.org/issue15952 #15951: string.Formatter returns str for empty unicode template http://bugs.python.org/issue15951 #15939: make *.rst files in Doc/ parseable by doctest http://bugs.python.org/issue15939 Top 10 most discussed issues (10) ================================= #11454: email.message import time http://bugs.python.org/issue11454 18 msgs #15903: Make rawiobase_read() read directly to bytes object http://bugs.python.org/issue15903 16 msgs #15973: Segmentation fault on timezone comparison http://bugs.python.org/issue15973 16 msgs #14262: Allow using decimals as arguments to `timedelta` http://bugs.python.org/issue14262 12 msgs #15944: memoryviews and ctypes http://bugs.python.org/issue15944 12 msgs #11664: Add patch method to unittest.TestCase http://bugs.python.org/issue11664 11 msgs #15972: wrong error message for os.path.getsize http://bugs.python.org/issue15972 10 msgs #15276: unicode format does not really work in Python 2.x http://bugs.python.org/issue15276 9 msgs #15629: Add to regrtest the ability to run Lib and Doc doctests http://bugs.python.org/issue15629 8 msgs #15951: string.Formatter returns str for empty unicode template http://bugs.python.org/issue15951 8 msgs Issues closed (22) ================== #14873: Windows devguide: clarification for build errors due to missin http://bugs.python.org/issue14873 closed by ezio.melotti #15039: module/ found before module.py when both are in the CWD http://bugs.python.org/issue15039 closed by eric.smith #15144: Possible integer overflow in operations with addresses and siz http://bugs.python.org/issue15144 closed by pitrou #15304: Wrong path in test.support.temp_cwd() error message http://bugs.python.org/issue15304 closed by ezio.melotti #15421: Calendar.itermonthdates OverflowError http://bugs.python.org/issue15421 closed by ezio.melotti #15548: Mention all new os functions in What's New in Python 3.3 http://bugs.python.org/issue15548 closed by haypo #15789: mention shell-like parts of the std lib in the subprocess docs http://bugs.python.org/issue15789 closed by ezio.melotti #15796: Fix readline() docstrings http://bugs.python.org/issue15796 closed by ezio.melotti #15896: Sporadic EINVAL in nonblocking pipe os.read when forked child http://bugs.python.org/issue15896 closed by vitaly #15920: make howto/regex.rst doctests pass http://bugs.python.org/issue15920 closed by ezio.melotti #15932: files in the csv documentation's examples are not closed http://bugs.python.org/issue15932 closed by ezio.melotti #15946: Windows 8 x64 - IO-Error http://bugs.python.org/issue15946 closed by brian.curtin #15950: open() should not accept bool argument http://bugs.python.org/issue15950 closed by r.david.murray #15959: Declaration mismatch of quick integer allocation counters http://bugs.python.org/issue15959 closed by mark.dickinson #15960: logging.shutdown should cope with IO errors from handler.relea http://bugs.python.org/issue15960 closed by vinay.sajip #15965: AT_FDCWD is 0xffd19553 on Solaris 10, resulting in compiler wa http://bugs.python.org/issue15965 closed by trent #15970: ElementTree HTML serialization incorrect for <meta>, <param> http://bugs.python.org/issue15970 closed by ezio.melotti #15975: Allow multiplying timedelta by Decimal http://bugs.python.org/issue15975 closed by mark.dickinson #15980: Non-escaped '\n' in docstrings http://bugs.python.org/issue15980 closed by ezio.melotti #15981: improve documentation of __hash__ http://bugs.python.org/issue15981 closed by r.david.murray #15995: Windows: 3.3.0-rc2.msi: test_lzma fails http://bugs.python.org/issue15995 closed by skrah #15985: round() has wrong argument names http://bugs.python.org/issue15985 closed by mark.dickinson

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Re: [Python-Dev] [Python-checkins] peps: add stub for wheel spec
by Brett Cannon Sept. 21, 2012

Sept. 21, 2012

We don't put stubs of PEPs into the repository, especially when they have not been vetted on python-ideas or some other public mailing list that is appropriate for the subject. You also mis-capitalized PyPy in this commit. On Thu, Sep 20, 2012 at 6:44 PM, daniel.holth <python-checkins(a)python.org>wrote: > http://hg.python.org/peps/rev/4ac055623f2a > changeset: 4514:4ac055623f2a > user: Daniel Holth <dholth(a)fastmail.fm> > date: Thu Sep 20 18:43:53 2012 -0400 > summary: > add stub for wheel spec > > files: > pep-0425.txt | 7 +++---- > pep-0427.txt | 30 ++++++++++++++++++++++++++++++ > 2 files changed, 33 insertions(+), 4 deletions(-) > > > diff --git a/pep-0425.txt b/pep-0425.txt > --- a/pep-0425.txt > +++ b/pep-0425.txt > @@ -81,10 +81,9 @@ > > Other Python implementations should use `sys.implementation.name`. > > -The version is `py_version_nodot`. CPython gets away with no dot, but > -if one is needed the underscore `_` is used instead. Pypy uses versions > that > -do not track the Python language version and should probably use its own > -versions here `pp18`, `pp19`. > +The version is `py_version_nodot`. CPython gets away with no dot, > +but if one is needed the underscore `_` is used instead. Pypy should > +probably use its own versions here `pp18`, `pp19`. > > The version can be just the major version `2` or `3` `py2`, `py3` for > many pure-Python distributions. > diff --git a/pep-0427.txt b/pep-0427.txt > new file mode 100644 > --- /dev/null > +++ b/pep-0427.txt > @@ -0,0 +1,30 @@ > +PEP: 426 > +Title: The Wheel Binary Package Format 1.0 > +Version: $Revision$ > +Last-Modified: $Date$ > +Author: Daniel Holth <dholth(a)fastmail.fm> > +Discussions-To: Distutils SIG > +Status: Draft > +Type: Standards Track > +Content-Type: text/x-rst > +Created: 20 Sep 2012 > + > + > +Abstract > +======== > + > +This PEP describes a binary format for Python called wheel. > + > +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 > + End: > > -- > Repository URL: http://hg.python.org/peps > > _______________________________________________ > Python-checkins mailing list > Python-checkins(a)python.org > http://mail.python.org/mailman/listinfo/python-checkins > >

1 0

Memoryviews should expose the underlying memory address
by David Beazley Sept. 21, 2012

Sept. 21, 2012

I have recently been experimenting with the memoryview() built-in and have come to believe that it really needs to expose the 'buf' attribute of the underlying Py_buffer structure as an integer (see PEP 3118). Let me explain. The whole point of PEP 3118 (as I understand it) is to provide a means for exchanging or sharing array data across different libraries such as numpy, PIL, ctypes, Cython, etc. If you're working with Py_buffer objects at the C level, this works fine. However, if you're working purely in Python, you're only able to get partial information about memory views such as the shape and size. You can't get the actual pointer to the underlying memory (unless I've missed something obvious). This is unfortunate because it means that you can't write Python code to link memoryviews to other kinds of compiled code that might want to operate on array-oriented data. For example, you can't pass the raw pointer into a function that you've exposed via ctypes. Similarly, you can't pass the pointer into functions you've dynamically compiled using libraries such as LLVM-py. There might be other kinds of applications, but just having that one bit of extra information available would be useful for various advanced programming techniques involving extensions and memory buffers. Cheers, Dave

8 13

TypeError: f() missing 1 required positional argument: 'x'
by Mark Dickinson Sept. 20, 2012

Sept. 20, 2012

I suspect I've missed the boat on this one (certainly for 3.3.0), but here goes. The new TypeError reporting for bad function calls is a huge improvement (thanks Benjamin!), but I have one small nitpick: what *is* a positional argument? For example: >>> def f(x): pass ... >>> f() Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: f() missing 1 required positional argument: 'x' I think it's confusing to describe 'x' as a positional argument. It's a required formal parameter, certainly. But a caller of 'f' could pass 'x' either by position or by 'keyword'. When running training (generally Python 2.6 or 2.7 based), I frequently have to devote some time to unravelling student confusion between 'arguments passed by keyword' on one hand and 'optional formal parameters' on the other. The outline of the explanation goes something like: (0) Preamble: be careful to separate out details of function calling from those of function definition; distinguish formal parameters from actual arguments. (1) On the function *definition* side, formal parameters may be either *required* or *optional*. (2) On the function *calling* side, actual arguments may be passed either positionally or by keyword. (3) The notions in (1) and (2) are entirely orthogonal! (3a) (Although in practice, callers tend to use pass-by-keyword for optional formal parameters.) That's all for Python 2; Python 3, of course, requires a bit more explanation related to the keyword-only arguments. There already seems to be a fair amount of confusion in the Python world about point (3); I've seen professional Python training slides that show how to define optional formal parameters under the heading "keyword arguments". I submit that the word 'positional' in the TypeError message exacerbates this confusion, and that little would be lost by simply dropping it from the exception message. Thoughts? Mark

10 23

Take a look at Issue15421
by Cédric Krier Sept. 20, 2012

Sept. 20, 2012

Hi, Could someone take a look at the Issue15421 [1]? It is a small bug in calendar module but it generates noise on web application like roundup [2]. Thanks, [1] http://bugs.python.org/issue15421 [2] http://issues.roundup-tracker.org/issue2550765 -- Cédric Krier B2CK SPRL Rue de Rotterdam, 4 4000 Liège Belgium Tel: +32 472 54 46 59 Email/Jabber: cedric.krier(a)b2ck.com Website: http://www.b2ck.com/

1 0

Python 1.5 output file versions
by Ido Yohanan Sept. 19, 2012

Sept. 19, 2012

Hi, I am working with PYTHON 1.5 and want to control versions of every pyo file. Is there any way I can assign a file version to every pyo file without writing a variable inside every py file that holds it? Thanks a lot, Ido

3 2

packaging location ?
by Tarek Ziadé Sept. 16, 2012

Sept. 16, 2012

Hello I was wondering if anyone knows if the removed Lib/packaging directory landed in some other places after it was removed. We have http://hg.python.org/distutils2 be the 'packaging' version is a full py3-renamed version we need to keep mirrored Cheers Tarek

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Re: [Python-Dev] [Python-checkins] Daily reference leaks (1704deb7e6d7): sum=2
by Ross Lagerwall Sept. 16, 2012

Sept. 16, 2012

On 09/16/2012 06:04 AM, solipsis(a)pitrou.net wrote: > results for 1704deb7e6d7 on branch "default" > -------------------------------------------- > > test_dbm leaked [0, 2, 0] references, sum=2 > I've noticed that test_dbm fairly often leaks here although I've never reproduced it. Does anyone know with which dbm lib this is (gdbm, ndbm, gdbm_compat, bdb)? Regards -- Ross Lagerwall

2 1

What's New in Python 3.3: missing unittest.mock!
by Victor Stinner Sept. 14, 2012

Sept. 14, 2012

Hi, I just noticed that the new unittest.mock module is missing from the What's New in Python 3.3. Can someone add it? (I cannot right now). Thanks. Victor

1 0

Edits to Metadata 1.2 to add extras (optional dependencies)
by Daniel Holth Sept. 14, 2012

Sept. 14, 2012

I've drafted some edits to Metadata 1.2 with valuable feedback from distutils-sig (special thanks to Erik Bray), which seems to have no more comments on the issue after about 6 weeks. Let me know if you have an opinion, or if you will have one during some bounded time in the future. Metadata 1.2 (PEP 345), a non-final PEP that has been adopted by approximately 10 of the latest sdists from pypy, cannot represent the setuptools "extras" (optional dependencies) feature. This is a problem because about 1600+ or 10% of the packages hosted on pypy define "extras" as measured in May of this year. The edit implements the extras feature by adding a new condition "extra == 'name'" to the Metadata 1.2 environment markers. Requirements with this marker are only installed when the named optional feature is requested. Valid extras for a package must be declared with Provides-Extra: name. It also adds Setup-Requires-Dist as a way to specify requirements needed during an install as opposed to during runtime. Abbreviated highlights: Setup-Requires-Dist (multiple use) Like Requires-Dist, but names dependencies needed while the distributions's distutils / packaging `setup.py` / `setup.cfg` is run. Provides-Extra (multiple use) A string containing the name of an optional feature. Examples: Requires-Dist: reportlab; extra == 'pdf' Requires-Dist: nose; extra == 'test' Requires-Dist: sphinx; extra == 'doc' (full changeset on https://bitbucket.org/dholth/python-peps/changeset/537e83bd4068) Thanks, Daniel Holth

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