Mailman 3 June 2011 - Python-Dev

Re: [Python-Dev] cpython: always clear parser error
by Georg Brandl 06 Jun '11

06 Jun '11

On 06/06/11 05:13, benjamin.peterson wrote: > http://hg.python.org/cpython/rev/9faa9270457e > changeset: 70654:9faa9270457e > user: Benjamin Peterson <benjamin(a)python.org> > date: Sun Jun 05 22:14:05 2011 -0500 > summary: > always clear parser error > > files: > Modules/parsermodule.c | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) This looks like a fixup of rev 3ffd8dea77bf; it would be nice to say so in the commit message: the current message is not obvious at all. Georg

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Add LRUCache class to stdlib
by Nadeem Vawda 06 Jun '11

06 Jun '11

I would like to propose adding a class to the stdlib to provide a more flexible LRU caching mechanism. As things stand, the functools.lru_cache() decorator is fine for memoization of pure functions, but does not accommodate situations where cache entries become stale and must be invalidated/updated (e.g. filecmp.cmp(); cf. issue #11802). I was thinking it would be a good idea to factor out the the replacement code into a separate class that could then be reused by code for which the lru_cache() decorator is not applicable. The implementation of lru_cache() itself would also become considerably simpler. Implementation: class LRUCache: """Least-recently-used cache class. See: http://en.wikipedia.org/wiki/Cache_algorithms#Least_Recently_Used """ def __init__(self, maxsize): """Initialize an LRUCache. If *maxsize* is None, the LRU replacement mechanism is disabled, and the cache can grow without bound. """ if maxsize is None: self.cache = dict() else: self.cache = OrderedDict() self.lock = Lock() self.hits = self.misses = 0 self.maxsize = maxsize def __getitem__(self, key): with self.lock: try: value = self.cache[key] except KeyError: self.misses += 1 raise else: self.hits += 1 if self.maxsize is not None: self.cache.move_to_end(key) return value def __setitem__(self, key, value): with self.lock: self.cache[key] = value if self.maxsize is not None and len(self.cache) > self.maxsize: self.cache.popitem(0) def info(self): """Report cache statistics""" with self.lock: return _CacheInfo(self.hits, self.misses, self.maxsize, len(self.cache)) I'm not sure where this class should go; it would be convenient to just stick it in functools along with lru_cache(), but perhaps the collections package would be more appropriate? Cheers, Nadeem

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keyword-only arguments and varags
by Benjamin Peterson 05 Jun '11

05 Jun '11

Currently, def f(*, kw, **kwargs): pass is valid syntax, but def f(*args, *, kw): pass is not. I don't see any mention of it in the PEP but perhaps there is a good reason this isn't allowed. It seems to be perfectly well-defined to me. -- Regards, Benjamin

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Re: [Python-Dev] [Python-checkins] cpython (3.1): Do not add txt files twice.
by Victor Stinner 05 Jun '11

05 Jun '11

I added the "if dir=='cjkencodings':" to msi.py, based on tests for other subdirectories in Lib/tests/. Can you explain me why cjkencodings should not have a special case? The fix should maybe be ported to 3.2, 3.3 and 2.7. Victor Le dimanche 05 juin 2011 11:00:30, martin.v.loewis a écrit : > http://hg.python.org/cpython/rev/df7b9c5d6ba1 > changeset: 70643:df7b9c5d6ba1 > branch: 3.1 > parent: 70571:0639e630426c > user: Martin v. Löwis <martin(a)v.loewis.de> > date: Sun Jun 05 10:55:57 2011 +0200 > summary: > Do not add txt files twice. > > files: > Tools/msi/msi.py | 2 -- > 1 files changed, 0 insertions(+), 2 deletions(-) > > > diff --git a/Tools/msi/msi.py b/Tools/msi/msi.py > --- a/Tools/msi/msi.py > +++ b/Tools/msi/msi.py > @@ -1021,8 +1021,6 @@ > lib.add_file("zipdir.zip") > if dir=='tests' and parent.physical=='distutils': > lib.add_file("Setup.sample") > - if dir=='cjkencodings': > - lib.glob("*.txt") > if dir=='decimaltestdata': > lib.glob("*.decTest") > if dir=='output':

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Re: [Python-Dev] [Python-checkins] cpython: Add NEWS and whatsnew entries for the packaging module
by Victor Stinner 04 Jun '11

04 Jun '11

Le vendredi 03 juin 2011 17:28:48, eric.araujo a écrit : > +packaging > +--------- > + > +:mod:`distutils` has undergone additions and refactoring under a new name, > +:mod:`packaging`, to allow developers to break backward compatibility. > +:mod:`distutils` is still provided in the standard library, but users are > +encouraged to transition to :mod:`packaging`. For older versions of > Python, a +backport compatible with 2.4+ and 3.1+ will be made available > on PyPI under the +name :mod:`distutils2`. Even for Python 2.4, really? Do you really need to support this old Python release? Victor

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Released: Python 2.6.7
by Barry Warsaw 03 Jun '11

03 Jun '11

Hello Pythoneers and Pythonistas, I'm happy to announce the final release of Python 2.6.7. Python 2.6 is in security-fix only mode. This means that general bug maintenance has ended, and only critical security issues are being fixed. We will support Python 2.6 in security-fix only mode until October 2013. Also, this is a source-only release; no installers for Windows or Mac OS X will be provided. Please download the source from: http://www.python.org/download/releases/2.6.7/ The NEWS file contains the list of changes since 2.6.6: http://www.python.org/download/releases/2.6.7/NEWS.txt Many thanks go out to the entire Python community for their contributions and help in making Python 2.6.7 available. Enjoy, -Barry (on behalf of the Python development community)

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Sniffing passwords from PyPI using insecure connection
by anatoly techtonik 03 Jun '11

03 Jun '11

Hi, I'd like to escalate http://bugs.python.org/issue12226 : 'use secured channel for uploading packages to pypi' to be shipped with next Python 2.6+ This will prevent pydotorg password sniffing when submitting packages through public networks (such as hotels). -- anatoly t.

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Extending os.chown() to accept user/group names
by Sandro Tosi 03 Jun '11

03 Jun '11

Hi all, before opening an issue to track the request, I'd like to ask advice here about this: extend os.chown() to accept even user/group names instead of just uid and gid. On a Unix system, you can call chown command passing either id or names, so it seems (to me at least) natural to expect os.chown() to behave similarly; but that's not the case. I can see os module wants to be a thin wrapper around OS syscalls and chown(2) accepts only uid/gid as input, so what would be best: extend os.chown() or provide a chown() function in shutil module for this purpose? Thanks in advance, -- Sandro Tosi (aka morph, morpheus, matrixhasu) My website: http://matrixhasu.altervista.org/ Me at Debian: http://wiki.debian.org/SandroTosi

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Re: [Python-Dev] [Python-checkins] cpython: Fix reST label for collections ABCs.
by Raymond Hettinger 03 Jun '11

03 Jun '11

On Jun 3, 2011, at 10:27 AM, eric.araujo wrote: > > Fix reST label for collections ABCs. > > The previous markup hijacked the abstract-base-classes glossary entry, > which resulted in the HTML linking to collections.abc when defining the > generic ABC concept. Now the glossary links to the abc module. I think the users are better served by links to collections.abc, io.abc, etc. For the most part, glossary readers will be interested in actual abstract classes than in the underlying implementation. IOW, I believe this edit makes the docs worse rather than better. Raymond

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Summary of Python tracker Issues
by Python tracker 03 Jun '11

03 Jun '11

ACTIVITY SUMMARY (2011-05-27 - 2011-06-03) 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 2815 ( +2) closed 21221 (+56) total 24036 (+58) Open issues with patches: 1224 Issues opened (38) ================== #12197: non-blocking SSL write in Windows sends large data but raises http://bugs.python.org/issue12197 opened by dsiroky #12198: zipfile.py:1047: DeprecationWarning: 'H' format requires 0 <= http://bugs.python.org/issue12198 opened by gnezdo #12200: bdist_wininst install_script not run on uninstall http://bugs.python.org/issue12200 opened by mhammond #12201: Returning FILETIME is unsupported in msilib.SummaryInformation http://bugs.python.org/issue12201 opened by markm #12202: Check status returns in msilib.SummaryInformation.GetProperty( http://bugs.python.org/issue12202 opened by markm #12204: str.upper converts to title http://bugs.python.org/issue12204 opened by py.user #12206: Documentation Std. Library 15.7.5 "LogRecord objects": Paramet http://bugs.python.org/issue12206 opened by mponweiser #12207: Document ast.PyCF_ONLY_AST http://bugs.python.org/issue12207 opened by eric.araujo #12208: Glitches in email.policy docs http://bugs.python.org/issue12208 opened by eric.araujo #12209: Minor edits to faulthandler doc http://bugs.python.org/issue12209 opened by eric.araujo #12210: test_smtplib: intermittent failures on FreeBSD http://bugs.python.org/issue12210 opened by skrah #12211: math.copysign must keep object type. http://bugs.python.org/issue12211 opened by umedoblock #12213: BufferedRandom, BufferedRWPair: issues with interlaced read-wr http://bugs.python.org/issue12213 opened by haypo #12214: platform module can't detect archlinux distribution http://bugs.python.org/issue12214 opened by lilaboc #12215: TextIOWrapper: issues with interlaced read-write http://bugs.python.org/issue12215 opened by haypo #12217: Cross-link docs for faulthandler, traceback and pdb http://bugs.python.org/issue12217 opened by eric.araujo #12219: tkinter.filedialog.askopenfilename XT dialog on Windows 7 http://bugs.python.org/issue12219 opened by hfischer #12220: minidom xmlns not handling spaces in xmlns attribute value fie http://bugs.python.org/issue12220 opened by hfischer #12222: All pysetup commands should respect exit codes http://bugs.python.org/issue12222 opened by tarek #12223: Datamodel documentation page: 'operator' where 'operand' shoul http://bugs.python.org/issue12223 opened by Vladimir.M. #12224: problem with siginterrupt http://bugs.python.org/issue12224 opened by Zhiping.Deng #12226: use secured channel for uploading packages to pypi http://bugs.python.org/issue12226 opened by techtonik #12228: Stat doc - fix swap of UF_OPAQUE and UF_NOUNLINK description http://bugs.python.org/issue12228 opened by sandro.tosi #12231: regrtest: add -k and -K options to filter tests by function/fi http://bugs.python.org/issue12231 opened by haypo #12232: embedded python import cmath http://bugs.python.org/issue12232 opened by Thanh Ly #12234: unittest2 could enable regex debugging for more information http://bugs.python.org/issue12234 opened by iElectric #12237: Document how to open non-default webbrowser http://bugs.python.org/issue12237 opened by hirsh #12238: Readline module loading in interactive mode http://bugs.python.org/issue12238 opened by Niels.Heinen #12239: msilib VT_EMPTY SummaryInformation properties raise an error ( http://bugs.python.org/issue12239 opened by markm #12240: Allow multiple setup_hooks http://bugs.python.org/issue12240 opened by erik.bray #12242: distutils2 environment marker for current compiler http://bugs.python.org/issue12242 opened by eli.collins #12243: getpass.getuser works on OSX http://bugs.python.org/issue12243 opened by louiscipher #12245: Document the meaning of FLT_ROUNDS constants for sys.float_inf http://bugs.python.org/issue12245 opened by rhettinger #12246: create installation path if it's non-existent http://bugs.python.org/issue12246 opened by tshepang #12248: __dir__ semantics changed in Python 2.7.2 http://bugs.python.org/issue12248 opened by barry #12249: add missing command http://bugs.python.org/issue12249 opened by tshepang #12253: Document packaging.manifest and packaging.errors http://bugs.python.org/issue12253 opened by eric.araujo #12254: PEP-3107 has a wrong attribute name for function annotations http://bugs.python.org/issue12254 opened by Roman.Alexeev Most recent 15 issues with no replies (15) ========================================== #12254: PEP-3107 has a wrong attribute name for function annotations http://bugs.python.org/issue12254 #12253: Document packaging.manifest and packaging.errors http://bugs.python.org/issue12253 #12245: Document the meaning of FLT_ROUNDS constants for sys.float_inf http://bugs.python.org/issue12245 #12242: distutils2 environment marker for current compiler http://bugs.python.org/issue12242 #12239: msilib VT_EMPTY SummaryInformation properties raise an error ( http://bugs.python.org/issue12239 #12232: embedded python import cmath http://bugs.python.org/issue12232 #12228: Stat doc - fix swap of UF_OPAQUE and UF_NOUNLINK description http://bugs.python.org/issue12228 #12223: Datamodel documentation page: 'operator' where 'operand' shoul http://bugs.python.org/issue12223 #12220: minidom xmlns not handling spaces in xmlns attribute value fie http://bugs.python.org/issue12220 #12217: Cross-link docs for faulthandler, traceback and pdb http://bugs.python.org/issue12217 #12214: platform module can't detect archlinux distribution http://bugs.python.org/issue12214 #12208: Glitches in email.policy docs http://bugs.python.org/issue12208 #12201: Returning FILETIME is unsupported in msilib.SummaryInformation http://bugs.python.org/issue12201 #12197: non-blocking SSL write in Windows sends large data but raises http://bugs.python.org/issue12197 #12179: Race condition using PyGILState_Ensure on a new thread http://bugs.python.org/issue12179 Most recent 15 issues waiting for review (15) ============================================= #12249: add missing command http://bugs.python.org/issue12249 #12246: create installation path if it's non-existent http://bugs.python.org/issue12246 #12243: getpass.getuser works on OSX http://bugs.python.org/issue12243 #12231: regrtest: add -k and -K options to filter tests by function/fi http://bugs.python.org/issue12231 #12228: Stat doc - fix swap of UF_OPAQUE and UF_NOUNLINK description http://bugs.python.org/issue12228 #12226: use secured channel for uploading packages to pypi http://bugs.python.org/issue12226 #12215: TextIOWrapper: issues with interlaced read-write http://bugs.python.org/issue12215 #12214: platform module can't detect archlinux distribution http://bugs.python.org/issue12214 #12213: BufferedRandom, BufferedRWPair: issues with interlaced read-wr http://bugs.python.org/issue12213 #12210: test_smtplib: intermittent failures on FreeBSD http://bugs.python.org/issue12210 #12209: Minor edits to faulthandler doc http://bugs.python.org/issue12209 #12208: Glitches in email.policy docs http://bugs.python.org/issue12208 #12207: Document ast.PyCF_ONLY_AST http://bugs.python.org/issue12207 #12202: Check status returns in msilib.SummaryInformation.GetProperty( http://bugs.python.org/issue12202 #12201: Returning FILETIME is unsupported in msilib.SummaryInformation http://bugs.python.org/issue12201 Top 10 most discussed issues (10) ================================= #11975: Fix referencing of built-in types (list, int, ...) http://bugs.python.org/issue11975 19 msgs #11416: netrc module does not handle multiple entries for a single hos http://bugs.python.org/issue11416 13 msgs #12226: use secured channel for uploading packages to pypi http://bugs.python.org/issue12226 12 msgs #12185: Decimal documentation lists "first" and "second" arguments, sh http://bugs.python.org/issue12185 10 msgs #11623: Distutils is reporting OSX 10.6 w/ XCode 4 as "universal" http://bugs.python.org/issue11623 9 msgs #11906: test_argparse failure in interactive mode http://bugs.python.org/issue11906 8 msgs #12082: Python/import.c still references fstat even with DONT_HAVE_FST http://bugs.python.org/issue12082 7 msgs #6490: os.popen documentation in 2.6 is probably wrong http://bugs.python.org/issue6490 5 msgs #12191: Add shutil.chown to allow to use user and group name (and not http://bugs.python.org/issue12191 5 msgs #12246: create installation path if it's non-existent http://bugs.python.org/issue12246 5 msgs Issues closed (47) ================== #3265: Python-2.5.2/Modules/_ctypes/malloc_closure.c:70: error: `MAP_ http://bugs.python.org/issue3265 closed by terry.reedy #8578: PyWeakref_GetObject http://bugs.python.org/issue8578 closed by python-dev #8678: crashers in rgbimg http://bugs.python.org/issue8678 closed by terry.reedy #9382: os.popen referenced but not documented in Python 3.x http://bugs.python.org/issue9382 closed by eric.araujo #9738: Document the encoding of functions bytes arguments of the C AP http://bugs.python.org/issue9738 closed by haypo #9812: cPickle segfault with nested dicts in threaded env http://bugs.python.org/issue9812 closed by terry.reedy #10449: “os.environ was modified by test_httpservers” http://bugs.python.org/issue10449 closed by eric.araujo #10616: Change PyObject_AsCharBuffer() error message http://bugs.python.org/issue10616 closed by python-dev #11217: python-32 not linked in /usr/local/bin in framework builds http://bugs.python.org/issue11217 closed by ned.deily #11449: tarfile tries to file_.tell() even when creating a new archive http://bugs.python.org/issue11449 closed by strombrg #11612: xml.dom.minidom fail to parse SVG file. http://bugs.python.org/issue11612 closed by ned.deily #11864: sporadic failure in test_concurrent_futures http://bugs.python.org/issue11864 closed by bquinlan #12028: threading._get_ident(): remove it in the doc or make it public http://bugs.python.org/issue12028 closed by python-dev #12057: HZ codec has no test http://bugs.python.org/issue12057 closed by haypo #12085: subprocess.Popen.__del__ raises AttributeError if __init__ was http://bugs.python.org/issue12085 closed by python-dev #12089: regrtest.py doesn't check for unexpected output anymore? http://bugs.python.org/issue12089 closed by python-dev #12101: PEPs should have consecutive revision numbers http://bugs.python.org/issue12101 closed by eric.araujo #12106: reflect syntatic sugar in with ast http://bugs.python.org/issue12106 closed by python-dev #12125: test_sysconfig fails on OpenIndiana because of test_packaging http://bugs.python.org/issue12125 closed by tarek #12151: test_logging fails sometimes http://bugs.python.org/issue12151 closed by vinay.sajip #12171: Reset method of the incremental encoders of CJK codecs calls t http://bugs.python.org/issue12171 closed by python-dev #12175: FileIO.readall() read the file position and size at each read http://bugs.python.org/issue12175 closed by haypo #12190: intern filenames in bytecode http://bugs.python.org/issue12190 closed by benjamin.peterson #12196: add pipe2() to the os module http://bugs.python.org/issue12196 closed by charles-francois.natali #12199: Unify TryExcept and TryFinally http://bugs.python.org/issue12199 closed by python-dev #12203: isinstance not functioning as documented http://bugs.python.org/issue12203 closed by benjamin.peterson #12205: test_subprocess fails due to uninstalled test subdirectory http://bugs.python.org/issue12205 closed by ned.deily #12212: Minor proofreading typo in index.rst http://bugs.python.org/issue12212 closed by benjamin.peterson #12216: future imports change the reporting of syntaxerrors http://bugs.python.org/issue12216 closed by python-dev #12218: Removing wsgiref.egg-info http://bugs.python.org/issue12218 closed by tarek #12221: segfaults with unexpanded $Revision$ id's in release candidate http://bugs.python.org/issue12221 closed by python-dev #12225: current tip doesn't build without mercurial installed http://bugs.python.org/issue12225 closed by r.david.murray #12227: multiprocessing.Pool initialization seems to call methods it s http://bugs.python.org/issue12227 closed by Graham.Cummins #12229: Remove unused variable in bufferedio.c http://bugs.python.org/issue12229 closed by python-dev #12230: test_subprocess.test_pass_fds() failed on x86 Tiger 3.x http://bugs.python.org/issue12230 closed by python-dev #12233: Lists in class objects not independent http://bugs.python.org/issue12233 closed by rhettinger #12235: subprocess throws wrong exception if script can't be executed http://bugs.python.org/issue12235 closed by r.david.murray #12236: Tkinter __version__ uses subversion substitution http://bugs.python.org/issue12236 closed by benjamin.peterson #12241: email.header.Header encoding fails on empty header http://bugs.python.org/issue12241 closed by r.david.murray #12244: cStringIO inconsistencies http://bugs.python.org/issue12244 closed by georg.brandl #12247: Finding subprocess.py depends on how IDLE is opened http://bugs.python.org/issue12247 closed by ned.deily #12250: regrtest: make --timeout explicit http://bugs.python.org/issue12250 closed by python-dev #12251: subprocess(..., stdout=sys.stderr) closes stderr for child http://bugs.python.org/issue12251 closed by charles-francois.natali #12252: '\u' in unicode raw string raise an syntax error http://bugs.python.org/issue12252 closed by amaury.forgeotdarc #1495802: cygwin: popen3 lock up http://bugs.python.org/issue1495802 closed by charles-francois.natali #1189811: pydoc may hide non-private doc strings. http://bugs.python.org/issue1189811 closed by ncoghlan #985064: plistlib crashes too easily on bad files http://bugs.python.org/issue985064 closed by ned.deily

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