Mailman 3 October 2013 - Python-Dev

[RELEASE] Python 2.7.6 release candidate 1
by Benjamin Peterson 27 Oct '13

27 Oct '13

I'm happy to announce the availability of Python 2.7.6 release candidate 1. Most importantly, this release candidate resolves crashes of the interactive interpreter on OS X 10.9. It also includes the usual collection of bugfixes over 2.7.5. These are described in excruciating detail in the Misc/NEWS file of the source tarball. You can view it online at http://hg.python.org/cpython/raw-file/9750acbf7c40/Misc/NEWS Downloads are at http://python.org/download/releases/2.7.6/ As always, please test the release and report bugs to http://bugs.python.org/ With any luck, the final release will follow in a week. Enjoy, Benjamin Peterson 2.7 Release Manager

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OrderedDict.values() behavior for modified instance
by Nikolaus Rath 27 Oct '13

27 Oct '13

Hello, The documentation says the following about modifying a dict while iterating through its view: | Iterating views while adding or deleting entries in the dictionary may | raise a RuntimeError or fail to iterate over all entries. (http://docs.python.org/3/library/stdtypes.html#dict-views) The OrderedDict documentation doesn't have anything to say on the subject. In practice, its implementation actually mostly correponds to naive expectations: >>> from collections import OrderedDict >>> d = OrderedDict() >>> for i in range(5): ... d[i] = i ... >>> i = iter(d.values()) >>> next(i) 0 >>> del d[0] >>> next(i) 1 >>> del d[2] >>> next(i) 3 >>> d.move_to_end(1) >>> next(i) 4 >>> next(i) 1 >>> etc. However, there is one case that results in a rather confusing error: >>> a = OrderedDict() >>> a[0] = 0 >>> a[1] = 1 >>> a[2] = 2 >>> i = iter(a.values()) >>> next(i) 0 >>> del a[0] >>> del a[1] >>> next(i) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3.3/collections/abc.py", line 495, in __iter__ yield self._mapping[key] KeyError: 1 What happens here is that a[0] is returned from the linked list, but it still contains links to a[1]. When a[1] is deleted, the links of its predecessor and successor are updated, but a[0] still points to a[1]. The OrderedList then hands a non-existing key to the values() implementation in collections.abc. The result is not only mightily confusing, but it is also not covered by the documentation (KeyError isn't a RuntimeError). I would very much like to see this fixed, but I'm not sure if there's a good way to do that. I see the following options: (a) When deleting an element from an OrderedList, update the pointers in the corresponding linked list element to the end of the list. Then removing the currently "active" element during the iteration would automatically end the iteration. For that, we'd just have to add two lines to __delitem__: def __delitem__(self, key, dict_delitem=dict.__delitem__): dict_delitem(self, key) link = self.__map.pop(key) link_prev = link.prev link_next = link.next link_prev.next = link_next link_next.prev = link_prev link.prev = root # new link.next = root # new The new behavior is explicitly covered by the documentation (changing the dict may result in incomplete iteration), but it's a change to what happened before. (b) When iterating through an OrderedDict, check that the next element is actually still in the hash, i.e. change def __iter__(self): root = self.__root curr = root.next while curr is not root: yield curr.key curr = curr.next to def __iter__(self): root = self.__root curr = root.next while curr is not root and curr.key in self: yield curr.key curr = curr.next that would terminate the iteration only in the special case, but incur an extra dict lookup at every iteration. Alternatively, one could try very hard to not stop the iteration: while curr is not root: yield curr.key while curr is not root: curr = curr.next if curr.key in self: break (c) Catch the KeyError in values(), and re-raise the proper exception in class ValuesView: def __iter__(self): for key in self._mapping: try: yield self._mapping[key] except KeyError: raise RuntimeError("underlying Mapping instance modified during iteration") I consider this a bit ugly, because it may mask other problems in a custom Mapping implementation (that may raise a KeyError because of a bug in the Mapping implementation itself). (d) Extend the OrderedDict documentation to explicity document this case. This has the drawback that it would probably be nicer to just have the behavior be consistent and correspond to intuitive expectations. Would any of those fixes be acceptable? Or is there an even better option? Best, Nikolaus -- Encrypted emails preferred. PGP fingerprint: 5B93 61F8 4EA2 E279 ABF6 02CF A9AD B7F8 AE4E 425C »Time flies like an arrow, fruit flies like a Banana.«

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Re: [Python-Dev] [Python-checkins] cpython: Issue #19330: Handle the no-docstrings case in tests
by Stefan Krah 26 Oct '13

26 Oct '13

nick.coghlan <python-checkins(a)python.org> wrote: > http://hg.python.org/cpython/rev/a9bbc2d0c1dc > -HAVE_DOCSTRINGS = (check_impl_detail(cpython=False) or > - sys.platform == 'win32' or > - sysconfig.get_config_var('WITH_DOC_STRINGS')) > +# Rather than trying to enumerate all the cases where docstrings may be > +# disabled, we just check for that directly > + > +def _check_docstrings(): > + """Just used to check if docstrings are enabled""" > + > +HAVE_DOCSTRINGS = (_check_docstrings.__doc__ is not None) > > requires_docstrings = unittest.skipUnless(HAVE_DOCSTRINGS, I think that does not detect --without-doc-strings (i.e. the C docstrings are empty). Stefan Krah

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Re: [Python-Dev] cpython (2.7): 2.7.6rc1
by Christian Heimes 26 Oct '13

26 Oct '13

Am 26.10.2013 20:58, schrieb benjamin.peterson: > http://hg.python.org/cpython/rev/4913d0e9be30 > changeset: 86665:4913d0e9be30 > branch: 2.7 > tag: v2.7.6rc1 > user: Benjamin Peterson <benjamin(a)python.org> > date: Sat Oct 26 14:57:21 2013 -0400 > summary: > 2.7.6rc1 We need to solve http://bugs.python.org/issue19227 before you release 2.7.6. I have suggested two approaches http://bugs.python.org/issue19227#msg201401

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Re: [Python-Dev] [Python-checkins] cpython: Fiddled Thread.join() to be a little simpler. Kinda ; -)
by A.M. Kuchling 26 Oct '13

26 Oct '13

On Sat, Oct 26, 2013 at 05:34:05AM +0200, tim.peters wrote: > Fiddled Thread.join() to be a little simpler. Kinda ;-) > - # else it's a negative timeout - precise behavior isn't documented > - # then, but historically .join() returned in this case > + else: > + # the behavior of a negative timeout isn't documented, but > + # historically .join() has acted as if timeout=0 then I think the final 'then' on the new comment is an editing error. Unless perhaps you meant to write a further sentence of comment? --amk

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Looking for volunteers to test Tulip on Windows
by Guido van Rossum 26 Oct '13

26 Oct '13

I'm working from home today and my Windows laptop is in the office, so I won't be able to test my latest Tulip changes on Windows (I just renamed pause to pause_reading, and hope to commit pause_reading later today). Is anyone luckier? Also, reading through the Windows OpenSSL setup in PCbuild/readme.txt I lost courage, so I've not tested the SSL behavior on Windows at all. Is anyone lucky enough to have a Python 3.4 alpha for Windows setup with OpenSSL already configured? If so, could you run test_asyncio for me and let me know if there are any issues? (Actually, even a working Python 3.3 setup would be useful, although you'd have to check out the Tulip repo and run the tests from there.) -- --Guido van Rossum (python.org/~guido)

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Summary of Python tracker Issues
by Python tracker 25 Oct '13

25 Oct '13

ACTIVITY SUMMARY (2013-10-18 - 2013-10-25) 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 4197 (+13) closed 26965 (+93) total 31162 (+106) Open issues with patches: 1955 Issues opened (55) ================== #18777: Cannot compile _ssl.c using openssl > 1.0 http://bugs.python.org/issue18777 reopened by christian.heimes #18999: Support different contexts in multiprocessing http://bugs.python.org/issue18999 reopened by sbt #19286: error: can't copy '<dirname>': doesn't exist or not a regular http://bugs.python.org/issue19286 opened by jason.coombs #19290: Clarify compile and eval interaction. http://bugs.python.org/issue19290 opened by terry.reedy #19291: Add docs for asyncio package (Tulip, PEP 3156) http://bugs.python.org/issue19291 opened by gvanrossum #19292: Make SSLContext.set_default_verify_paths() work on Windows http://bugs.python.org/issue19292 opened by gvanrossum #19296: Compiler warning when compiling dbm module http://bugs.python.org/issue19296 opened by vajrasky #19298: Use __attribute__(cleanup ...) to detect refleaks http://bugs.python.org/issue19298 opened by brett.cannon #19302: Add support for AIX pollset efficient event I/O polling http://bugs.python.org/issue19302 opened by David.Edelsohn #19308: Tools/gdb/libpython.py does not support GDB linked against Pyt http://bugs.python.org/issue19308 opened by dcoles #19316: devguide: compiler - wording http://bugs.python.org/issue19316 opened by numerodix #19317: ctypes.util.find_library should examine binary's RPATH on Sola http://bugs.python.org/issue19317 opened by automatthias #19320: Tkinter tests ran with wantobjects is false http://bugs.python.org/issue19320 opened by serhiy.storchaka #19325: _osx_support imports many modules http://bugs.python.org/issue19325 opened by christian.heimes #19328: Improve PBKDF2 documentation http://bugs.python.org/issue19328 opened by christian.heimes #19329: Faster compiling of charset regexpes http://bugs.python.org/issue19329 opened by serhiy.storchaka #19330: Use public classes for contextlib.suppress and redirect_stdout http://bugs.python.org/issue19330 opened by ncoghlan #19331: Revise PEP 8 recommendation for class names http://bugs.python.org/issue19331 opened by barry #19332: Guard against changing dict during iteration http://bugs.python.org/issue19332 opened by serhiy.storchaka #19333: distutils.util.grok_environment_error loses the error message http://bugs.python.org/issue19333 opened by mgedmin #19334: test_asyncio hanging for 1 hour (non-AIX version) http://bugs.python.org/issue19334 opened by gvanrossum #19335: codeop misclassifies incomplete code with 'nonlocal' http://bugs.python.org/issue19335 opened by Rosuav #19336: No API to get events from epoll without allocating a list http://bugs.python.org/issue19336 opened by alex #19338: multiprocessing: sys.exit() from a child with a non-int exit c http://bugs.python.org/issue19338 opened by brodie #19339: telnetlib: time.monotonic() should be used instead of time.tim http://bugs.python.org/issue19339 opened by haypo #19342: Improve grp module docstrings http://bugs.python.org/issue19342 opened by mgedmin #19343: Expose FreeBSD-specific APIs in resource module http://bugs.python.org/issue19343 opened by koobs #19346: Build fails when there are no shared extensions to be built http://bugs.python.org/issue19346 opened by alanh #19347: PEP 453 implementation tracking issue http://bugs.python.org/issue19347 opened by ncoghlan #19348: Building _testcapimodule as a builtin results in compile error http://bugs.python.org/issue19348 opened by alanh #19349: Not so correct exception message when running venv http://bugs.python.org/issue19349 opened by vajrasky #19351: python msi installers - silent mode http://bugs.python.org/issue19351 opened by Jason.Bray #19353: on RHEL6 simple build fails with test_linux_constants (test.te http://bugs.python.org/issue19353 opened by mcepl #19354: test_format fails on RHEL-6 http://bugs.python.org/issue19354 opened by skrah #19355: Initial modernization of OpenWatcom support http://bugs.python.org/issue19355 opened by Jeffrey.Armstrong #19358: Integrate "Argument Clinic" into CPython build http://bugs.python.org/issue19358 opened by larry #19359: reversed() does not work with weakref.proxy of sequences http://bugs.python.org/issue19359 opened by abingham #19361: Specialize exceptions thrown by JSON parser http://bugs.python.org/issue19361 opened by musically_ut #19362: Documentation for len() fails to mention that it works on sets http://bugs.python.org/issue19362 opened by Gareth.Rees #19363: Python 2.7's future_builtins.map is not compatible with Python http://bugs.python.org/issue19363 opened by Gareth.Rees #19367: IDLE wont open http://bugs.python.org/issue19367 opened by MrE.Merry #19371: timing test too tight http://bugs.python.org/issue19371 opened by pitrou #19372: getaddrinfo() bug http://bugs.python.org/issue19372 opened by Daniel #19373: Tkinter apps including IDLE may not display properly on OS X 1 http://bugs.python.org/issue19373 opened by ned.deily #19375: Deprecate site-python in site.py http://bugs.python.org/issue19375 opened by pitrou #19376: document that strptime() does not support the Feb 29 if the fo http://bugs.python.org/issue19376 opened by Matthew.Earl #19378: Rename "line_offset" parameter in dis.get_instructions to "fir http://bugs.python.org/issue19378 opened by ncoghlan #19380: Optimize parsing of regular expressions http://bugs.python.org/issue19380 opened by serhiy.storchaka #19382: tabnanny unit tests http://bugs.python.org/issue19382 opened by Colin.Williams #19383: nturl2path test coverage http://bugs.python.org/issue19383 opened by Colin.Williams #19385: dbm.dumb should be consistent when the database is closed http://bugs.python.org/issue19385 opened by Claudiu.Popa #19386: selectors test_interrupted_retry is flaky http://bugs.python.org/issue19386 opened by christian.heimes #19387: Explain and test the sre overlap table http://bugs.python.org/issue19387 opened by pitrou #19389: find_file might return a different directory than the tested f http://bugs.python.org/issue19389 opened by Mathieu.Virbel #19390: clinic.py: unhandled syntax error http://bugs.python.org/issue19390 opened by skrah Most recent 15 issues with no replies (15) ========================================== #19390: clinic.py: unhandled syntax error http://bugs.python.org/issue19390 #19389: find_file might return a different directory than the tested f http://bugs.python.org/issue19389 #19387: Explain and test the sre overlap table http://bugs.python.org/issue19387 #19385: dbm.dumb should be consistent when the database is closed http://bugs.python.org/issue19385 #19383: nturl2path test coverage http://bugs.python.org/issue19383 #19378: Rename "line_offset" parameter in dis.get_instructions to "fir http://bugs.python.org/issue19378 #19373: Tkinter apps including IDLE may not display properly on OS X 1 http://bugs.python.org/issue19373 #19372: getaddrinfo() bug http://bugs.python.org/issue19372 #19371: timing test too tight http://bugs.python.org/issue19371 #19363: Python 2.7's future_builtins.map is not compatible with Python http://bugs.python.org/issue19363 #19355: Initial modernization of OpenWatcom support http://bugs.python.org/issue19355 #19354: test_format fails on RHEL-6 http://bugs.python.org/issue19354 #19351: python msi installers - silent mode http://bugs.python.org/issue19351 #19349: Not so correct exception message when running venv http://bugs.python.org/issue19349 #19348: Building _testcapimodule as a builtin results in compile error http://bugs.python.org/issue19348 Most recent 15 issues waiting for review (15) ============================================= #19390: clinic.py: unhandled syntax error http://bugs.python.org/issue19390 #19389: find_file might return a different directory than the tested f http://bugs.python.org/issue19389 #19387: Explain and test the sre overlap table http://bugs.python.org/issue19387 #19385: dbm.dumb should be consistent when the database is closed http://bugs.python.org/issue19385 #19383: nturl2path test coverage http://bugs.python.org/issue19383 #19382: tabnanny unit tests http://bugs.python.org/issue19382 #19380: Optimize parsing of regular expressions http://bugs.python.org/issue19380 #19375: Deprecate site-python in site.py http://bugs.python.org/issue19375 #19362: Documentation for len() fails to mention that it works on sets http://bugs.python.org/issue19362 #19359: reversed() does not work with weakref.proxy of sequences http://bugs.python.org/issue19359 #19355: Initial modernization of OpenWatcom support http://bugs.python.org/issue19355 #19353: on RHEL6 simple build fails with test_linux_constants (test.te http://bugs.python.org/issue19353 #19349: Not so correct exception message when running venv http://bugs.python.org/issue19349 #19342: Improve grp module docstrings http://bugs.python.org/issue19342 #19339: telnetlib: time.monotonic() should be used instead of time.tim http://bugs.python.org/issue19339 Top 10 most discussed issues (10) ================================= #7442: _localemodule.c: str2uni() with different LC_NUMERIC and LC_CT http://bugs.python.org/issue7442 19 msgs #19331: Revise PEP 8 recommendation for class names http://bugs.python.org/issue19331 17 msgs #19292: Make SSLContext.set_default_verify_paths() work on Windows http://bugs.python.org/issue19292 16 msgs #19270: Document that sched.cancel() doesn't distinguish equal events http://bugs.python.org/issue19270 14 msgs #16113: SHA-3 (Keccak) support may need to be removed before 3.4 http://bugs.python.org/issue16113 11 msgs #17400: ipaddress should make it easy to identify rfc6598 addresses http://bugs.python.org/issue17400 11 msgs #19316: devguide: compiler - wording http://bugs.python.org/issue19316 11 msgs #16500: Add an 'atfork' module http://bugs.python.org/issue16500 10 msgs #16595: Add resource.prlimit http://bugs.python.org/issue16595 10 msgs #19302: Add support for AIX pollset efficient event I/O polling http://bugs.python.org/issue19302 10 msgs Issues closed (89) ================== #1540: Refleak tests: test_doctest and test_gc are failing http://bugs.python.org/issue1540 closed by pitrou #4905: Use INVALID_FILE_ATTRIBUTES instead of magic numbers http://bugs.python.org/issue4905 closed by tim.golden #8964: platform._sys_version does not parse correctly IronPython 2.x http://bugs.python.org/issue8964 closed by ezio.melotti #10015: Creating a multiprocess.pool.ThreadPool from a child thread bl http://bugs.python.org/issue10015 closed by terry.reedy #10179: os.stat fails on mapped network drive http://bugs.python.org/issue10179 closed by tim.golden #12866: Add support for 24-bit samples in the audioop module http://bugs.python.org/issue12866 closed by serhiy.storchaka #13515: Consistent documentation practices for security concerns and c http://bugs.python.org/issue13515 closed by ezio.melotti #14027: Add pysetup script for Windows http://bugs.python.org/issue14027 closed by pitrou #15207: mimetypes.read_windows_registry() uses the wrong regkey, creat http://bugs.python.org/issue15207 closed by tim.golden #16175: Add I/O Completion Ports wrapper http://bugs.python.org/issue16175 closed by christian.heimes #16612: Integrate "Argument Clinic" into CPython trunk http://bugs.python.org/issue16612 closed by larry #17087: Improve the repr for regular expression match objects http://bugs.python.org/issue17087 closed by serhiy.storchaka #17759: test_urllibnet.test_bad_address() fails on Ubuntu 13.04 http://bugs.python.org/issue17759 closed by barry #18221: abspath strips trailing spaces on win32 http://bugs.python.org/issue18221 closed by tim.golden #18235: _sysconfigdata.py wrong on AIX installations http://bugs.python.org/issue18235 closed by pitrou #18306: os.stat gives exception for Windows junctions in v3.3 http://bugs.python.org/issue18306 closed by tim.golden #18404: Memory leak in gdbmmodule http://bugs.python.org/issue18404 closed by christian.heimes #18527: Upgrade Modules/zlib to 1.2.8 http://bugs.python.org/issue18527 closed by christian.heimes #18603: PyOS_mystricmp unused and no longer available http://bugs.python.org/issue18603 closed by christian.heimes #18606: Add statistics module to standard library http://bugs.python.org/issue18606 closed by larry #18913: ssl._ssl._test_decode_cert seems to leak memory with certain c http://bugs.python.org/issue18913 closed by pitrou #18958: Exception('No JSON object could be decoded') when parsing a va http://bugs.python.org/issue18958 closed by ezio.melotti #19170: telnetlib: use selectors http://bugs.python.org/issue19170 closed by neologix #19201: Add 'x' mode to lzma.open() http://bugs.python.org/issue19201 closed by nadeem.vawda #19222: Add 'x' mode to gzip.open() http://bugs.python.org/issue19222 closed by nadeem.vawda #19223: Add 'x' mode to bz2.open() http://bugs.python.org/issue19223 closed by nadeem.vawda #19236: Add Tornado HTTP benchmark http://bugs.python.org/issue19236 closed by python-dev #19237: Proposal : LCM function to complement GCD http://bugs.python.org/issue19237 closed by mark.dickinson #19238: Misleading explanation of fill and align in format_spec http://bugs.python.org/issue19238 closed by ezio.melotti #19254: Python implementation of PBKDF2_HMAC http://bugs.python.org/issue19254 closed by christian.heimes #19262: Add asyncio (tulip, PEP 3156) to stdlib http://bugs.python.org/issue19262 closed by gvanrossum #19263: enum.py : Enum.__new__(). __objclass__ http://bugs.python.org/issue19263 closed by python-dev #19271: Update OrderedDict "see also" link http://bugs.python.org/issue19271 closed by rhettinger #19273: Update PCbuild/readme.txt http://bugs.python.org/issue19273 closed by tim.golden #19274: make zipfile.PyZipFile more usable http://bugs.python.org/issue19274 closed by Christian.Tismer #19285: test_asyncio failures on FreeBSD http://bugs.python.org/issue19285 closed by skrah #19287: __contains__() of dbm.ndbm databases fails with str http://bugs.python.org/issue19287 closed by serhiy.storchaka #19288: __contains__() of dbm.gnu databases fails with str http://bugs.python.org/issue19288 closed by serhiy.storchaka #19289: Incorrect documentation for format's fill character. http://bugs.python.org/issue19289 closed by ezio.melotti #19293: test_asyncio hanging for 1 hour (AIX version, hangs in test_su http://bugs.python.org/issue19293 closed by gvanrossum #19294: test_asyncio fails intermittently on OS X 10.4 http://bugs.python.org/issue19294 closed by ned.deily #19295: Make asyncio work without threads http://bugs.python.org/issue19295 closed by gvanrossum #19297: test_asyncio: unclosed sockets http://bugs.python.org/issue19297 closed by python-dev #19299: test_asyncio refleak failures http://bugs.python.org/issue19299 closed by pitrou #19300: Swap keyword arguments in open() to make encoding easier to us http://bugs.python.org/issue19300 closed by ezio.melotti #19301: Globals declared in function scope have wrong __qualname__ http://bugs.python.org/issue19301 closed by python-dev #19303: Typo in devguide - coverage http://bugs.python.org/issue19303 closed by ned.deily #19304: Typo in statistics.rst http://bugs.python.org/issue19304 closed by ned.deily #19305: sporadic test_asyncio failure under FreeBSD http://bugs.python.org/issue19305 closed by pitrou #19306: Warn unsuspecting readers that thread stacks are in reverse or http://bugs.python.org/issue19306 closed by gvanrossum #19307: Improve TypeError message in json.loads() http://bugs.python.org/issue19307 closed by ezio.melotti #19309: asyncio: fix handling of processes in a different process grou http://bugs.python.org/issue19309 closed by neologix #19310: asyncio: fix waitpid() logic http://bugs.python.org/issue19310 closed by gvanrossum #19311: devguide: hg bisect section could be clearer http://bugs.python.org/issue19311 closed by pitrou #19312: Typo in devguide - compiler http://bugs.python.org/issue19312 closed by ezio.melotti #19313: reference leaks http://bugs.python.org/issue19313 closed by python-dev #19314: Typo in devguide - compiler http://bugs.python.org/issue19314 closed by ezio.melotti #19315: devguide: compiler - poor wording http://bugs.python.org/issue19315 closed by ezio.melotti #19318: break more than once http://bugs.python.org/issue19318 closed by pitrou #19319: misleading comment regarding C http://bugs.python.org/issue19319 closed by ezio.melotti #19321: memoryview should be a context manager http://bugs.python.org/issue19321 closed by serhiy.storchaka #19322: Python crashes on re.search in new regex module. http://bugs.python.org/issue19322 closed by ned.deily #19323: typo in statistics documentation http://bugs.python.org/issue19323 closed by python-dev #19324: Expose Linux-specific APIs in resource module http://bugs.python.org/issue19324 closed by christian.heimes #19326: asyncio: child process exit isn't detected if its stdin/stdout http://bugs.python.org/issue19326 closed by neologix #19327: re doesn't work with big charsets http://bugs.python.org/issue19327 closed by serhiy.storchaka #19337: MMAP: Bus error (core dump) under heavy read/write http://bugs.python.org/issue19337 closed by neologix #19340: test_sysconfig.test_srcdir fails when sys.base_prefix="/" http://bugs.python.org/issue19340 closed by pitrou #19341: locale.getdefaultencoding() returns wrong locale and encoding http://bugs.python.org/issue19341 closed by serhiy.storchaka #19344: ReStructuredText error in whatsnew/3.4.rst http://bugs.python.org/issue19344 closed by christian.heimes #19345: Unclear phrasing in whatsnew/3.4.rst http://bugs.python.org/issue19345 closed by python-dev #19350: macurl2path coverage http://bugs.python.org/issue19350 closed by orsenthil #19352: unittest loader barfs on symlinks http://bugs.python.org/issue19352 closed by pitrou #19356: Change argument _self in _io/textio.c http://bugs.python.org/issue19356 closed by pitrou #19357: Module does not get pulled from sys.modules during importlib t http://bugs.python.org/issue19357 closed by eric.snow #19360: test_site fails when installed into $HOME/.local http://bugs.python.org/issue19360 closed by pitrou #19364: Implementing __getattr__ breaks copy and deepcopy http://bugs.python.org/issue19364 closed by eric.snow #19365: Quadratic complexity in the parsing of re replacement string http://bugs.python.org/issue19365 closed by serhiy.storchaka #19366: Segfault in REPL due to escaped tab. http://bugs.python.org/issue19366 closed by ned.deily #19368: Seg Fault after upgrading to OS X Mavericks http://bugs.python.org/issue19368 closed by ned.deily #19369: PyObject_LengthHint is slow http://bugs.python.org/issue19369 closed by serhiy.storchaka #19370: Entering integers in python interpreter causes segfault http://bugs.python.org/issue19370 closed by ned.deily #19374: Segmentation fault: 11 with String.split http://bugs.python.org/issue19374 closed by ned.deily #19377: Backport SVG mime type to Python 2 http://bugs.python.org/issue19377 closed by christian.heimes #19379: Don't import linecache at warnings toplevel http://bugs.python.org/issue19379 closed by python-dev #19381: Seg Fault with complex numbers http://bugs.python.org/issue19381 closed by benjamin.peterson #19384: test_py_compile fails with OSError on FreeBSD for root user http://bugs.python.org/issue19384 closed by christian.heimes #19388: Inflated download counts http://bugs.python.org/issue19388 closed by pitrou #1772673: Replacing char* with const char* http://bugs.python.org/issue1772673 closed by serhiy.storchaka

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Python 3 to be default in Fedora 22
by Terry Reedy 25 Oct '13

25 Oct '13

Progess on the Python3 as 'standard Python' front: Yesterday, FESCO (Fedora Steering Committee?) approved a proposal to make Python 3 (version unspecified, I presume 3.3 or 3.4) the default Python in Fedora 22 (I did not see a date anywhere). http://lwn.net/Articles/571528/ https://fedoraproject.org/wiki/Changes/Python_3_as_Default -- Terry Jan Reedy

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OS X 10.9 Mavericks -> 2.7.6/3.3.3 updates needed
by Ned Deily 24 Oct '13

24 Oct '13

On Tuesday, Apple released OS X 10.9 (a.k.a. Mavericks). There has already been a lot of interest in it, in part because Apple has made it available for free and has made it easy for users with 10.8, 10.7, and (most) 10.6 systems to upgrade directly to 10.9. Unfortunately, there are issues with our current maintenance releases (3.3.2 and 2.7.5) on OS X 10.9 that call for new maintenance releases as soon as possible. One is critical in that it causes the interpreter to crash when running in interactive mode (http://bugs.python.org/issue18458). The problem was due to a long-standing compatibility issue in libedit's readline compatibility layer that upstream has finally fixed and Apple has now shipped in 10.9. Because the python.org installers dynamically link to libedit, the original workaround in readline.c for the original design flaw in history indexing now causes a segfault on 10.9 when the user types in the second command interactively. Not good. Ronald devised a fix that allows readline.so at runtime to detect and work with either version of libedit so that we continue to have binary compatibility across multiple OS X releases. That fix is already out in the 3.4.0 alphas and backported to the 3.3 and 2.7 branches, awaiting release there. Just in the last 12 hours, there have been at least four duplicates of the issue reported by users. I've updated the original issue to explicitly mention 10.9, now that it is no longer under NDA, and to provide a downloadable script for inexperienced users to workaround the problem by "removing" readline.so. Presumably, as word gets out, there will be fewer duplicate issues opened but the impact will remain. The only other major 10.9-related issue that I'm aware of at the moment is one with the OS X native Tk (of course!) that can affect IDLE and other Tkinter applications. See http://bugs.python.org/issue19373 for details. The workaround for it is to run Tk in 32-bit mode. I've "engaged" the Tk project in the problem. Since it can affect all users of Tk, and not just Python ones, I'm hopeful that there will be a fix soon. Note that, for 3.4.0, we are now packaging a private copy of Tcl/Tk with the 10.6+ OS X installer to avoid the chronic problems caused by Apple not updating the buggy system Tcl/Tk and forcing users to download and install a third-party Tcl/Tk just to be able to use IDLE. With the concurrence of the release managers, I am in the process of backporting that packaging support into 3.3 and 2.7. That means any Tk fix will likely require an update to those private copies. Because of the criticality of the readline issue, we really need to get 2.7.6 and 3.3.3 out as soon as practical. Besides the Tk packaging, there are a few other 10.9 build-related issues that should go into these releases. I expect to complete testing across all releases and have everything checked-in sometime this weekend. I don't think we should wait for the Issue19373 Tk fix if it isn't available when everything else is. If necessary, we can later re-release the OS X installers with just the updated Tcl/Tk shared libraries. I don't know where any other potential 2.7.6 or 3.3.3 issues stand at this point. But I'd like Benjamin and Georg to propose an aggressive schedule so we can get these fixes out there. -- Ned Deily, nad(a)acm.org

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Re: [Python-Dev] [Python-checkins] cpython: Close #19379: Lazily import linecache in the warnings module, to make startup
by Brett Cannon 24 Oct '13

24 Oct '13

The diff doesn't show an addition to BENCH_GROUPS. Maybe apps? On Thu, Oct 24, 2013 at 4:24 PM, antoine.pitrou <python-checkins(a)python.org>wrote: > http://hg.python.org/cpython/rev/8939c0196990 > changeset: 86603:8939c0196990 > user: Antoine Pitrou <solipsis(a)pitrou.net> > date: Thu Oct 24 22:23:42 2013 +0200 > summary: > Close #19379: Lazily import linecache in the warnings module, to make > startup with warnings faster until a warning gets printed. > > files: > Lib/warnings.py | 6 ++---- > Misc/NEWS | 3 +++ > 2 files changed, 5 insertions(+), 4 deletions(-) > > > diff --git a/Lib/warnings.py b/Lib/warnings.py > --- a/Lib/warnings.py > +++ b/Lib/warnings.py > @@ -1,9 +1,5 @@ > """Python part of the warnings subsystem.""" > > -# Note: function level imports should *not* be used > -# in this module as it may cause import lock deadlock. > -# See bug 683658. > -import linecache > import sys > > __all__ = ["warn", "showwarning", "formatwarning", "filterwarnings", > @@ -21,6 +17,7 @@ > > def formatwarning(message, category, filename, lineno, line=None): > """Function to format a warning the standard way.""" > + import linecache > s = "%s:%s: %s: %s\n" % (filename, lineno, category.__name__, > message) > line = linecache.getline(filename, lineno) if line is None else line > if line: > @@ -233,6 +230,7 @@ > > # Prime the linecache for formatting, in case the > # "file" is actually in a zipfile or something. > + import linecache > linecache.getlines(filename, module_globals) > > if action == "error": > diff --git a/Misc/NEWS b/Misc/NEWS > --- a/Misc/NEWS > +++ b/Misc/NEWS > @@ -21,6 +21,9 @@ > Library > ------- > > +- Issue #19379: Lazily import linecache in the warnings module, to make > + startup with warnings faster until a warning gets printed. > + > - Issue #19327: Fixed the working of regular expressions with too big > charset. > > - Issue #17400: New 'is_global' attribute for ipaddress to tell if an > address > > -- > Repository URL: http://hg.python.org/cpython > > _______________________________________________ > Python-checkins mailing list > Python-checkins(a)python.org > https://mail.python.org/mailman/listinfo/python-checkins > >

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