Python-Dev July 2013

python-dev@python.org

76 participants
69 discussions

Re: [Python-Dev] [Python-checkins] cpython: Fix #18530. Remove extra stat call from posixpath.ismount

by Victor Stinner

Could you please keep the comment "# A symlink can never be a mount point" ? It is useful. (I didn't know that, I'm not a windows developer.) Victor Le 22 juil. 2013 20:08, "brian.curtin" <python-checkins(a)python.org> a écrit : > http://hg.python.org/cpython/rev/240adc564539 > changeset: 84791:240adc564539 > parent: 84788:84d6c1c0665e > user: Brian Curtin <brian(a)python.org> > date: Mon Jul 22 13:07:52 2013 -0500 > summary: > Fix #18530. Remove extra stat call from posixpath.ismount > > files: > Lib/posixpath.py | 22 ++++++++++++++-------- > Misc/NEWS | 3 +++ > 2 files changed, 17 insertions(+), 8 deletions(-) > > > diff --git a/Lib/posixpath.py b/Lib/posixpath.py > --- a/Lib/posixpath.py > +++ b/Lib/posixpath.py > @@ -182,18 +182,24 @@ > > def ismount(path): > """Test whether a path is a mount point""" > - if islink(path): > - # A symlink can never be a mount point > - return False > try: > s1 = os.lstat(path) > - if isinstance(path, bytes): > - parent = join(path, b'..') > - else: > - parent = join(path, '..') > + except OSError: > + # It doesn't exist -- so not a mount point. :-) > + return False > + else: > + if stat.S_ISLNK(s1.st_mode): > + return False > + > + if isinstance(path, bytes): > + parent = join(path, b'..') > + else: > + parent = join(path, '..') > + try: > s2 = os.lstat(parent) > except OSError: > - return False # It doesn't exist -- so not a mount point :-) > + return False > + > dev1 = s1.st_dev > dev2 = s2.st_dev > if dev1 != dev2: > diff --git a/Misc/NEWS b/Misc/NEWS > --- a/Misc/NEWS > +++ b/Misc/NEWS > @@ -162,6 +162,9 @@ > Library > ------- > > +- Issue #18530: Remove additional stat call from posixpath.ismount. > + Patch by Alex Gaynor. > + > - Issue #18514: Fix unreachable Py_DECREF() call in PyCData_FromBaseObj() > > - Issue #9177: Calling read() or write() now raises ValueError, not > > -- > Repository URL: http://hg.python.org/cpython > > _______________________________________________ > Python-checkins mailing list > Python-checkins(a)python.org > http://mail.python.org/mailman/listinfo/python-checkins > >

7 years, 8 months

Avoiding error from repr() of recursive dictview

by Ben North

Hi, A friend of mine, Ruadhan O'Flanagan, came across a bug which turned out to be the one noted in [http://bugs.python.org/issue18019], i.e.: >>> d={} >>> d[42]=d.viewvalues() >>> d <segmentation fault> This issue has been fixed in hg; the behaviour now is that a RuntimeError is produced for a recursive dictionary view: >>> d={} >>> d[42]=d.viewvalues() >>> d # (output line-broken:) {42: Traceback (most recent call last): File "<stdin>", line 1, in <module> RuntimeError: maximum recursion depth exceeded while getting the repr of a list Before finding this, though, I'd investigated and made a patch which produces a similar "..." output to a recursive dictionary. Reworking against current 2.7, the behaviour would be: >>> x={} >>> x[42]=x >>> x # existing behaviour for dictionaries: {42: {...}} >>> d={} >>> d[42]=d.viewvalues() >>> d # new behaviour: {42: dict_values([...])} >>> d[43]=d.viewitems() >>> d # (output line-broken:) {42: dict_values([..., dict_items([(42, ...), (43, ...)])]), 43: dict_items([(42, dict_values([..., ...])), (43, ...)])} Attached is the patch, against current 2.7 branch. If there is interest in applying this, I will create a proper patch (changelog entry, fix to Lib/test/test_dictviews.py, etc.). Thanks, Ben.

7 years, 8 months

Re: [Python-Dev] [Python-checkins] cpython (3.3): let's not return NULL from functions that should return ints

by Eric V. Smith

[re-sending to python-dev] On 7/21/2013 4:27 PM, benjamin.peterson wrote: > @@ -267,7 +267,7 @@ > Py_DECREF(io); > Py_DECREF(binary); > PyMem_FREE(found_encoding); > - return PyErr_SetFromErrnoWithFilenameObject(PyExc_IOError, filename); > + return 0; > } > fob = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "Os", binary, encoding); > Py_DECREF(io); Did you mean to remove the call to PyErr_SetFromErrnoWithFilenameObject? Or just call it, then ignore its return value and return 0? -- Eric. _______________________________________________ Python-checkins mailing list Python-checkins(a)python.org http://mail.python.org/mailman/listinfo/python-checkins

7 years, 8 months

Dash

by Serhiy Storchaka

What type of dash is preferable in the documentation? The en dash (–) or the em dash (—)?

7 years, 8 months

dict __contains__ raises TypeError on unhashable input

by Ethan Furman

While working on issue #18508 I stumbled across this: Traceback (most recent call last): ... File "/usr/local/lib/python3.4/enum.py", line 417, in __new__ if value in cls._value2member_map: TypeError: unhashable type: 'list' I'll wrap it in a try-except block, but I must admit I was surprised the answer wasn't False. After all, if the input is unhashable then obviously it's not in the dict; furthermore, if I were to compare the number 5 with a set() I would get False, not a TypeMismatch error, and dict keys are basically done by equality, the hash is just (?) a speed-up. -- ~Ethan~

7 years, 8 months

Re: [Python-Dev] cpython (2.7): Issue #18441: Make test.support.requires('gui') skip when it should.

by Ned Deily

In article <51ECAE41.5060403(a)udel.edu>, Terry Reedy <tjreedy(a)udel.edu> wrote: > On 7/21/2013 10:11 PM, R. David Murray wrote: > > On Mon, 22 Jul 2013 02:13:47 +0200, terry.reedy > > <python-checkins(a)python.org> wrote: > >> +# If buildbot improperly sets gui resource (#18365, #18441), remove it > >> +# so requires('gui') tests are skipped while non-gui tests still run. > >> +if use_resources and 'gui' in use_resources: > > > > Note that the buildbot cannot "improperly" set the GUI resource. > > I disagree. I do understand though, that what I call improper setting on > the command line cannot be prevented. So I think regrtest (and unittest > if and when it supports resources) should intercept 'gui', test once and > for all whether it was set 'properly' (or 'appropriately', if you > prefer), which is to say, test whether there is a usable GUI, and ignore > 'gui' if not. > > > Setting a resource on the regrtest command line says "please try to run > > these tests". Right. > When doing so causes a failure at best and a crash at worst, and those > consequences and the means of avoiding them are not documented, that is > not a very considerate request. It has cost me over a day of my life. Unfortunately, that's the way regrtest resources work. > The printed out -h help says > "gui - Run tests that require a running GUI." > Not 'try', but 'run'. That implies to me that there *is* 'a running GUI' > and that is it all right to run tests that *require* such. That was also > what I understood from the discussion on > http://bugs.python.org/issue18103 Create a GUI test framework for Idle This is exactly what Issue8716 was about. The buildbot has no way of knowing ahead of time whether a test will cause a crash or not. Yes, Tk should not crash but it does in some cases. Speaking of #8716, that reminds me that there is an open issue with it (documented in Issue17496). There is the start of a patch there to use a more general approach to testing for a working Tk that might be applicable on all platforms. -- Ned Deily, nad(a)acm.org

7 years, 8 months

Re: [Python-Dev] [Python-checkins] cpython (2.7): Issue #18441: Make test.support.requires('gui') skip when it should.

by R. David Murray

On Mon, 22 Jul 2013 02:13:47 +0200, terry.reedy <python-checkins(a)python.org> wrote: > +# If buildbot improperly sets gui resource (#18365, #18441), remove it > +# so requires('gui') tests are skipped while non-gui tests still run. > +if use_resources and 'gui' in use_resources: Note that the buildbot cannot "improperly" set the GUI resource. Setting a resource on the regrtest command line says "please try to run these tests". If they can't be run, they should then be skipped for whatever reason they can't run. --David

7 years, 8 months

Re: [Python-Dev] cpython: Use strncat() instead of strcat() to silence some warnings.

by Serhiy Storchaka

20.07.13 15:12, christian.heimes написав(ла): > http://hg.python.org/cpython/rev/c92f4172d122 > changeset: 84723:c92f4172d122 > user: Christian Heimes <christian(a)cheimes.de> > date: Sat Jul 20 14:11:28 2013 +0200 > summary: > Use strncat() instead of strcat() to silence some warnings. > CID 486616, CID 486617, CID 486615 > > files: > Modules/ossaudiodev.c | 6 +++--- > 1 files changed, 3 insertions(+), 3 deletions(-) > > > diff --git a/Modules/ossaudiodev.c b/Modules/ossaudiodev.c > --- a/Modules/ossaudiodev.c > +++ b/Modules/ossaudiodev.c > @@ -245,7 +245,7 @@ > int arg; > > assert(strlen(fname) <= 30); > - strcat(argfmt, fname); > + strncat(argfmt, fname, 30); > if (!PyArg_ParseTuple(args, argfmt, &arg)) > return NULL; > > @@ -270,7 +270,7 @@ > int arg = 0; > > assert(strlen(fname) <= 30); > - strcat(argfmt, fname); > + strncat(argfmt, fname, 30); > if (!PyArg_ParseTuple(args, argfmt, &arg)) > return NULL; > > @@ -290,7 +290,7 @@ > int rv; > > assert(strlen(fname) <= 30); > - strcat(argfmt, fname); > + strncat(argfmt, fname, 30); > if (!PyArg_ParseTuple(args, argfmt)) > return NULL; This will wrong when strlen(fname) is 30. strncat() will copy only 30 bytes, without terminal NUL.

7 years, 9 months

Summary of Python tracker Issues

by Python tracker

ACTIVITY SUMMARY (2013-07-12 - 2013-07-19) 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 4092 (+25) closed 26185 (+45) total 30277 (+70) Open issues with patches: 1846 Issues opened (46) ================== #18436: Add mapping of symbol to function to operator module http://bugs.python.org/issue18436 opened by zach.ware #18438: Obsolete url in comment inside decimal module http://bugs.python.org/issue18438 opened by vajrasky #18439: Patchcheck for ACKS, NEWS does not work on Windows. http://bugs.python.org/issue18439 opened by terry.reedy #18441: Idle: Make test.support.requires('gui') skip when it should. http://bugs.python.org/issue18441 opened by terry.reedy #18443: Misc/Readme still documents TextMate http://bugs.python.org/issue18443 opened by iwontbecreative #18444: IDLE: Mac OS X pressing ctrl-A in Python shell moved cursor be http://bugs.python.org/issue18444 opened by Todd.Rovito #18445: Tools/Script/Readme is outdated http://bugs.python.org/issue18445 opened by iwontbecreative #18451: Omit test files in devinabox coverage run http://bugs.python.org/issue18451 opened by brett.cannon #18453: There are unused variables inside DateTimeTestCase class in te http://bugs.python.org/issue18453 opened by vajrasky #18454: distutils crashes when uploading to PyPI having only the usern http://bugs.python.org/issue18454 opened by jgehrcke #18456: Documentation for PyDict_Update is incorrect http://bugs.python.org/issue18456 opened by ncoghlan #18458: libedit history offset workaround http://bugs.python.org/issue18458 opened by ronaldoussoren #18459: readline: libedit support on non-apple platforms http://bugs.python.org/issue18459 opened by ronaldoussoren #18460: .chm documentation files advertised in download.html but not t http://bugs.python.org/issue18460 opened by iwontbecreative #18461: X Error in tkinter http://bugs.python.org/issue18461 opened by serhiy.storchaka #18465: There are unused variables and unused import in Lib/test/test_ http://bugs.python.org/issue18465 opened by vajrasky #18466: Spelling mistakes in various code comments. http://bugs.python.org/issue18466 opened by iwontbecreative #18467: argparse - problematic 'default' behavior http://bugs.python.org/issue18467 opened by matej.tyc #18468: re.group() should never return a bytearray http://bugs.python.org/issue18468 opened by gvanrossum #18472: PEP 8 updates - internal interfaces and import * http://bugs.python.org/issue18472 opened by ncoghlan #18473: some objects pickled by Python 3.x are not unpicklable in Pyth http://bugs.python.org/issue18473 opened by kmike #18476: No way to pass custom arguments for loggers and formatters. http://bugs.python.org/issue18476 opened by piotr.dobrogost #18477: fix_import (2to3 fixer) is not case-sensitive http://bugs.python.org/issue18477 opened by Valentin.Lorentz #18478: Class bodies: when does a name become local? http://bugs.python.org/issue18478 opened by terry.reedy #18481: lcov report http://bugs.python.org/issue18481 opened by christian.heimes #18483: Add hour-24 type of time to test_http2time_formats in test_htt http://bugs.python.org/issue18483 opened by vajrasky #18484: No unit test for iso2time function from http.cookiejar module http://bugs.python.org/issue18484 opened by vajrasky #18485: mingw: configure for shared build http://bugs.python.org/issue18485 opened by rpetrov #18486: mingw: dynamic loading support http://bugs.python.org/issue18486 opened by rpetrov #18487: mingw implement exec prefix http://bugs.python.org/issue18487 opened by rpetrov #18488: sqlite: finalize() method of user function may be called with http://bugs.python.org/issue18488 opened by haypo #18489: IDLE Unit test for SearchEngine.py http://bugs.python.org/issue18489 opened by philwebster #18491: Add "exe wrapper" functionality to Windows launcher http://bugs.python.org/issue18491 opened by pmoore #18492: Add test.support.regrtest_run flag, simplify support.requires http://bugs.python.org/issue18492 opened by zach.ware #18493: make profile-opt fails with pre-existing python2.7 in path http://bugs.python.org/issue18493 opened by Claudio.Freire #18494: PyType_GenericSet/GetDict functions misnamed in docs? http://bugs.python.org/issue18494 opened by Wolf.Ihlenfeldt #18495: mingw: ignore main program for frozen scripts http://bugs.python.org/issue18495 opened by rpetrov #18496: mingw: setup exclude termios module http://bugs.python.org/issue18496 opened by rpetrov #18497: mingw: setup _multiprocessing module http://bugs.python.org/issue18497 opened by rpetrov #18498: mingw: setup select module http://bugs.python.org/issue18498 opened by rpetrov #18499: mingw: setup _ctypes module with system libffi http://bugs.python.org/issue18499 opened by rpetrov #18500: mingw: defect winsock2 and setup _socket module http://bugs.python.org/issue18500 opened by rpetrov #18501: _elementtree.c calls Python callbacks while a Python exception http://bugs.python.org/issue18501 opened by haypo #18502: CDLL does not use same paths as util.find_library http://bugs.python.org/issue18502 opened by shjohnson.pi #18503: No assertion in test_del_param_on_nonexistent_header function http://bugs.python.org/issue18503 opened by vajrasky #18504: IDLE:Improvements- Improving Mock_Text http://bugs.python.org/issue18504 opened by JayKrish Most recent 15 issues with no replies (15) ========================================== #18504: IDLE:Improvements- Improving Mock_Text http://bugs.python.org/issue18504 #18502: CDLL does not use same paths as util.find_library http://bugs.python.org/issue18502 #18500: mingw: defect winsock2 and setup _socket module http://bugs.python.org/issue18500 #18499: mingw: setup _ctypes module with system libffi http://bugs.python.org/issue18499 #18498: mingw: setup select module http://bugs.python.org/issue18498 #18497: mingw: setup _multiprocessing module http://bugs.python.org/issue18497 #18496: mingw: setup exclude termios module http://bugs.python.org/issue18496 #18495: mingw: ignore main program for frozen scripts http://bugs.python.org/issue18495 #18494: PyType_GenericSet/GetDict functions misnamed in docs? http://bugs.python.org/issue18494 #18493: make profile-opt fails with pre-existing python2.7 in path http://bugs.python.org/issue18493 #18489: IDLE Unit test for SearchEngine.py http://bugs.python.org/issue18489 #18487: mingw implement exec prefix http://bugs.python.org/issue18487 #18486: mingw: dynamic loading support http://bugs.python.org/issue18486 #18485: mingw: configure for shared build http://bugs.python.org/issue18485 #18484: No unit test for iso2time function from http.cookiejar module http://bugs.python.org/issue18484 Most recent 15 issues waiting for review (15) ============================================= #18500: mingw: defect winsock2 and setup _socket module http://bugs.python.org/issue18500 #18499: mingw: setup _ctypes module with system libffi http://bugs.python.org/issue18499 #18498: mingw: setup select module http://bugs.python.org/issue18498 #18497: mingw: setup _multiprocessing module http://bugs.python.org/issue18497 #18496: mingw: setup exclude termios module http://bugs.python.org/issue18496 #18495: mingw: ignore main program for frozen scripts http://bugs.python.org/issue18495 #18492: Add test.support.regrtest_run flag, simplify support.requires http://bugs.python.org/issue18492 #18491: Add "exe wrapper" functionality to Windows launcher http://bugs.python.org/issue18491 #18489: IDLE Unit test for SearchEngine.py http://bugs.python.org/issue18489 #18487: mingw implement exec prefix http://bugs.python.org/issue18487 #18486: mingw: dynamic loading support http://bugs.python.org/issue18486 #18485: mingw: configure for shared build http://bugs.python.org/issue18485 #18481: lcov report http://bugs.python.org/issue18481 #18477: fix_import (2to3 fixer) is not case-sensitive http://bugs.python.org/issue18477 #18472: PEP 8 updates - internal interfaces and import * http://bugs.python.org/issue18472 Top 10 most discussed issues (10) ================================= #18408: Fixes crashes found by pyfailmalloc http://bugs.python.org/issue18408 34 msgs #18373: implement sys.get/setbyteswarningflag() http://bugs.python.org/issue18373 9 msgs #18491: Add "exe wrapper" functionality to Windows launcher http://bugs.python.org/issue18491 9 msgs #11874: argparse assertion failure with brackets in metavars http://bugs.python.org/issue11874 8 msgs #17214: http.client.HTTPConnection.putrequest encode error http://bugs.python.org/issue17214 7 msgs #17933: test_ftp failure / ftplib error formatting issue http://bugs.python.org/issue17933 7 msgs #18258: Fix test discovery for test_codecmaps*.py http://bugs.python.org/issue18258 7 msgs #18444: IDLE: Mac OS X pressing ctrl-A in Python shell moved cursor be http://bugs.python.org/issue18444 7 msgs #18305: [patch] Fast sum() for non-numbers http://bugs.python.org/issue18305 6 msgs #18387: Add 'symbols' link to pydoc's html menu bar. http://bugs.python.org/issue18387 6 msgs Issues closed (42) ================== #17482: functools.update_wrapper mishandles __wrapped__ http://bugs.python.org/issue17482 closed by python-dev #17767: Fix test discovery for test_locale.py http://bugs.python.org/issue17767 closed by serhiy.storchaka #17778: Fix test discovery for test_multiprocessing.py http://bugs.python.org/issue17778 closed by sbt #18021: Update broken link to Apple Publication Style Guide http://bugs.python.org/issue18021 closed by ezio.melotti #18042: Provide enum.unique class decorator http://bugs.python.org/issue18042 closed by python-dev #18266: Fix test discovery for test_largefile.py http://bugs.python.org/issue18266 closed by serhiy.storchaka #18279: IDLE Unit test for RstripExtension.py http://bugs.python.org/issue18279 closed by terry.reedy #18336: codecs: Link to readline module (history) instead of fd.readli http://bugs.python.org/issue18336 closed by serhiy.storchaka #18344: _bufferedreader_read_all() may leak reference to data http://bugs.python.org/issue18344 closed by sbt #18365: Idle: mock Text class and test thereof http://bugs.python.org/issue18365 closed by terry.reedy #18366: Look into using setuptools 0.8 with devinabox http://bugs.python.org/issue18366 closed by brett.cannon #18393: Gestalt() is deprecated on OSX 10.8, remove support? http://bugs.python.org/issue18393 closed by ronaldoussoren #18428: IDLE startup error http://bugs.python.org/issue18428 closed by ned.deily #18429: IDLE: Format Paragraph doesn't function with comment blocks http://bugs.python.org/issue18429 closed by Todd.Rovito #18431: Encoded words in structured headers are not decoded by the new http://bugs.python.org/issue18431 closed by r.david.murray #18432: sched modules queue property should return a list, not an iter http://bugs.python.org/issue18432 closed by rhettinger #18433: Clarify venv docs about which methods check for pre-existing p http://bugs.python.org/issue18433 closed by python-dev #18434: Update venv example to use setuptools http://bugs.python.org/issue18434 closed by python-dev #18435: Move venv from a custom Context class to types.SimpleNamespace http://bugs.python.org/issue18435 closed by python-dev #18437: Typo in comment inside class Charset about output_charset http://bugs.python.org/issue18437 closed by r.david.murray #18440: hash() and __hash__() do not document their size constraints http://bugs.python.org/issue18440 closed by barry #18442: Typo in developers.rst line 27 http://bugs.python.org/issue18442 closed by ned.deily #18446: Dead link in documenting.rst http://bugs.python.org/issue18446 closed by ezio.melotti #18447: Pydoc crashes on large contents http://bugs.python.org/issue18447 closed by ned.deily #18448: Tools/demo/eiffel.py fails to run tests. http://bugs.python.org/issue18448 closed by serhiy.storchaka #18450: Typos in developers.rst http://bugs.python.org/issue18450 closed by python-dev #18452: Typo in Doc/howto/argparse.rst http://bugs.python.org/issue18452 closed by python-dev #18455: Multiprocessing connection SocketClient retries connection on http://bugs.python.org/issue18455 closed by sbt #18457: Fix and cleanup the ss1.py demo http://bugs.python.org/issue18457 closed by serhiy.storchaka #18462: Download > Other documentation page contains a link to a frenc http://bugs.python.org/issue18462 closed by ned.deily #18464: Typo in the name of function in test__encoded_words.py http://bugs.python.org/issue18464 closed by python-dev #18469: PyStructSequence does not handle exceptions correctly http://bugs.python.org/issue18469 closed by python-dev #18470: tokenizer.c does not handle new_string() failure http://bugs.python.org/issue18470 closed by python-dev #18471: Typo in heapq documentation http://bugs.python.org/issue18471 closed by python-dev #18474: Lambda assigned to object does not automatically get self http://bugs.python.org/issue18474 closed by amaury.forgeotdarc #18475: No unittest.main in Lib/test/test_email/test_inversion.py http://bugs.python.org/issue18475 closed by python-dev #18479: Improvements to Powershell activate script for venv http://bugs.python.org/issue18479 closed by python-dev #18480: _elementtree: missing PyType_Ready call http://bugs.python.org/issue18480 closed by ronaldoussoren #18482: dis.dis fails on one letter strings. http://bugs.python.org/issue18482 closed by r.david.murray #18490: Error embedding datetime in C++ http://bugs.python.org/issue18490 closed by christian.heimes #18449: Demo 'ss1.py' crash in python3 http://bugs.python.org/issue18449 closed by serhiy.storchaka #18463: Download > Other documentation page outdated/dead links http://bugs.python.org/issue18463 closed by ned.deily

7 years, 9 months

Fwd: Issue 1229 in nativeclient: Get Python to work under Native Client

by anatoly techtonik

Does Python build system support cross-compiling? NaCl projects seems to have problem with that. Just thought you might be interested to know about it. ---------- Forwarded message ---------- From: <nativeclient(a)googlecode.com> Date: Tue, Jul 16, 2013 at 9:24 PM Subject: Re: Issue 1229 in nativeclient: Get Python to work under Native Client To: techtonik(a)gmail.com Updates: Status: Fixed Comment #8 on issue 1229 by mseaborn(a)chromium.org: Get Python to work under Native Client http://code.google.com/p/**nativeclient/issues/detail?id=**1229<http://code.google.com/p/nativeclient/issues/detail?id=1229> This is done in naclports. Sam Clegg added initial support for building against nacl-glibc in https://code.google.com/p/** naclports/source/detail?r=802<https://code.google.com/p/naclports/source/detail?r=802> . Sam found a way to work around the Python build's lack of support for cross-compiling. The workaround is to build a native "pgen" first and inject it into the later cross-build. Building Python with nacl-newlib and PNaCl is a work in progress: https://codereview.chromium.**org/18112024/<https://codereview.chromium.org/18112024/>

7 years, 9 months

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Python-Dev July 2013