Mailman 3 March 2006 - Python-Dev

Weekly Python Patch/Bug Summary
by Kurt B. Kaiser 09 Mar '06

09 Mar '06

Patch / Bug Summary ___________________ Patches : 386 open ( +4) / 3089 closed (+10) / 3475 total (+14) Bugs : 889 open ( +9) / 5636 closed (+12) / 6525 total (+21) RFE : 212 open ( +1) / 201 closed ( +0) / 413 total ( +1) New / Reopened Patches ______________________ db4.4 support for bsddb (2006-03-02) CLOSED http://python.org/sf/1441660 opened by Jérome Laheurte Faster list comprehensions (2006-03-03) CLOSED http://python.org/sf/1442442 opened by Collin Winter Add support for the If-Modified-Since header (2006-03-03) http://python.org/sf/1442867 opened by Shannon -jj Behrens PyLong_FromString optimization (2006-03-04) http://python.org/sf/1442927 opened by Alan McIntyre Incremental codecs for CJKCodecs (2006-03-05) http://python.org/sf/1443155 opened by Hye-Shik Chang Remove bad PREDICT in ceval.c (2006-03-04) http://python.org/sf/1443159 opened by Collin Winter gc.get_count() and other changes (2006-03-05) CLOSED http://python.org/sf/1443865 opened by Barry A. Warsaw email/charset.py convert() patch (2006-03-06) http://python.org/sf/1443875 opened by Tokio Kikuchi Various minor fixes for NULL checks, etc. (2006-03-06) http://python.org/sf/1444030 opened by Hye-Shik Chang Make itertools.tee participate in GC (2006-03-06) http://python.org/sf/1444398 opened by Thomas Wouters kwdargs for compile/__import__ (2006-03-07) http://python.org/sf/1444529 opened by Thomas Wouters New with semantics (2006-03-08) http://python.org/sf/1445739 opened by Guido van Rossum Patches Closed ______________ db4.4 support for bsddb (2006-03-02) http://python.org/sf/1441660 closed by nnorwitz Inconsistency in os' function naming (2006-03-01) http://python.org/sf/1440928 closed by gvanrossum PEP 357 --- adding nb_index (2006-02-21) http://python.org/sf/1436368 closed by gvanrossum Faster list comprehensions (2006-03-03) http://python.org/sf/1442442 closed by nnorwitz The email package needs an "application" type (2006-02-04) http://python.org/sf/1424065 closed by bwarsaw Size of time_t changed to 64 bits in MSVC++ 2005 CRT (2006-02-24) http://python.org/sf/1437769 closed by loewis gc.get_count() and other changes (2006-03-05) http://python.org/sf/1443865 closed by bwarsaw StreamReader.readline with size reading multiple lines (2005-12-13) http://python.org/sf/1379332 closed by doerwalter Make property use the getter's __doc__ if no doc argument (2006-02-18) http://python.org/sf/1434038 closed by gbrandl New / Reopened Bugs ___________________ yet another svn head compiler change (2006-03-02) http://python.org/sf/1441486 opened by Michael Hudson socket read() can cause MemoryError in Windows (2006-03-02) http://python.org/sf/1441530 opened by taukki Omission in docs for urllib2.urlopen() (2006-03-02) http://python.org/sf/1441864 opened by Kent Johnson A (treaded) Python crash only on dual core machines (2006-03-02) CLOSED http://python.org/sf/1441884 opened by Robert Kiendl Multiple simultaneous sendtos on AF_UNIX socket broken. (2006-03-02) http://python.org/sf/1441984 opened by Brian Brunswick Traceback in pydoc (2006-03-02) CLOSED http://python.org/sf/1442012 opened by Thomas Heller IDLE shell window gets very slow when displaying long lines (2006-03-03) http://python.org/sf/1442493 opened by Heiko Selber os.listdir doesn't release GIL (2006-02-15) CLOSED http://python.org/sf/1432525 reopened by gvanrossum docs for os.statvfs miss f_bsize parameter (2006-03-03) CLOSED http://python.org/sf/1442767 opened by Chris Cogdon handling comments with markupbase and HTMLParser (2006-03-03) http://python.org/sf/1442874 opened by Daniel Bad Coroutine link (2006-03-04) CLOSED http://python.org/sf/1442937 opened by Paddy McCarthy Pickle protocol 2 fails on private slots. (2006-03-05) http://python.org/sf/1443328 opened by Daniele Varrazzo locale.getpreferredencoding() dies when setlocale fails (2006-03-05) http://python.org/sf/1443504 opened by Catherine Devlin email 3.0+ stops parsing headers prematurely (2006-03-05) http://python.org/sf/1443866 opened by Mark Sapiro os.open() Documentation (2006-03-06) http://python.org/sf/1444104 opened by Thomas Guettler subprocess test cases fail with noexec-mounted /tmp (2006-03-06) http://python.org/sf/1444408 opened by Wummel Pointer freed twice in Py_InitializeEx() (2006-03-07) http://python.org/sf/1444893 opened by athorp getpass.getpass queries on STDOUT not STERR (*nix) (2006-03-07) http://python.org/sf/1445068 opened by Jon Lasser embedding Python causes memory leaks (2006-03-08) http://python.org/sf/1445210 opened by Andrew Trevorrow install fails on hard link (2006-03-08) http://python.org/sf/1445781 opened by goldenautumnday install fails on hard link (2006-03-08) CLOSED http://python.org/sf/1445807 opened by goldenautumnday os.path.realpath works on windows (2006-03-08) CLOSED http://python.org/sf/1445901 opened by Jonathan Ellis unicode('foo', '.utf99') does not raise LookupError (2006-03-08) http://python.org/sf/1446043 opened by osvenskan subprocess interpreted double quotation mark wrong on window (2006-03-09) http://python.org/sf/1446119 opened by simon Bugs Closed ___________ A (treaded) Python crash only on dual core machines (2006-03-02) http://python.org/sf/1441884 closed by loewis Traceback in pydoc (2006-03-02) http://python.org/sf/1442012 closed by gbrandl os.listdir doesn't release GIL (2006-02-15) http://python.org/sf/1432525 closed by gbrandl docs for os.statvfs miss f_bsize parameter (2006-03-03) http://python.org/sf/1442767 closed by nnorwitz Bad Coroutine link (2006-03-03) http://python.org/sf/1442937 closed by nnorwitz test_struct crashed, py2.3.5, solaris 10 (12/08/05) http://python.org/sf/1376400 closed by sf-robot test test_nis crashed -- nis.error: no such key in map (07/02/03) http://python.org/sf/764493 closed by sf-robot file to store pickled object should be opened in binary mode (2006-02-27) http://python.org/sf/1439659 closed by gbrandl set update method description is incorrect (2006-03-01) http://python.org/sf/1441264 closed by tjreedy test_tarfile fails with readonly source dir for Python 2.4.2 (12/23/05) http://python.org/sf/1389157 closed by sf-robot cannot build SVN trunk on old systems (12/29/05) http://python.org/sf/1393109 closed by sf-robot building readline module fails on Irix 6.5 (04/28/03) http://python.org/sf/729236 closed by sf-robot Python 2.5 CVS broken for HP-UX platform? (06/01/05) http://python.org/sf/1212703 closed by sf-robot MemoryError on AIX52 (08/03/04) http://python.org/sf/1002465 closed by sf-robot 2.3.4 can not be installed over 2.3.3 (05/29/04) http://python.org/sf/962918 closed by sf-robot Rebuilding from source on RH9 fails (_tkinter.so missing) (04/22/05) http://python.org/sf/1188231 closed by sf-robot configure problem on HP-UX 11.11 (11/23/04) http://python.org/sf/1071597 closed by sf-robot dbm Error (10/09/03) http://python.org/sf/820953 closed by sf-robot bsddb hangs with recno/source sync (01/26/03) http://python.org/sf/675187 closed by sf-robot ImportError: No module named _socket (10/01/03) http://python.org/sf/815999 closed by sf-robot Python 2.3.3 urllib proxy support fails (01/07/04) http://python.org/sf/872736 closed by sf-robot UnicodeWriter: "utf-8" hardcoded instead of self.encoding (2006-03-01) http://python.org/sf/1440831 closed by gbrandl CHM file contains proprietary link format (2006-02-18) http://python.org/sf/1434298 closed by alexanderweb install fails on hard link (2006-03-08) http://python.org/sf/1445807 deleted by goldenautumnday os.path.realpath works on windows (2006-03-08) http://python.org/sf/1445901 closed by gbrandl RFE Closed __________ lib-deprecated (02/02/06) http://python.org/sf/1423082 closed by sf-robot

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fixing log messages
by Fredrik Lundh 08 Mar '06

08 Mar '06

just noticed an embarrasing misspelling in one of my recent checkins, only to find that I cannot fix it: $ svn propedit --revprop -r 41759 svn:log svn: Repository has not been enabled to accept revision propchanges; ask the administrator to create a pre-revprop-change hook $ would it be a good idea to ask the administrator to do this ? </F>

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Re: [Python-Dev] Long-time shy failure in test_socket_ssl
by Tim Peters 08 Mar '06

08 Mar '06

[Tim] >> Neal plugged another hole later, but-- alas --I have seen the same shy >> failure since then on WinXP. One of the most recent buildbot test >> runs saw it too, on a non-Windows box: >> >> http://www.python.org/dev/buildbot/trunk/g5%20osx.3%20trunk/builds/204/step… >> >> test_socket_ssl >> test test_socket_ssl crashed -- >> exceptions.TypeError: 'NoneType' object is not callable >> >> in the second test run there. [Neal] > For closure, I believe this problem was addressed by revs 42842 and > 42844 to Lib/test/test_importhooks.py. I agree the mystery-change there made the problem go away (yay!), but would prefer to reserve "addressed" for some notion of "understood". Who understands test_importhooks? Without Neal's change to delete "urllib" from sys.modules there, and when running tests in a specific order, test_socket_ssl dies because the module-global `urlparse` magically becomes None on line 147 of urlparse.py's urljoin() function. What sins does test_importhooks commit to provoke this? What else does running test_importhooks distort? That is, what else should test_importhooks be doing to clean up after itself that it's not currently doing (in the absence of understanding the original problem, there's no apparent answer)? > If anyone sees spurious failures with the buildbot (one time failures, > crashes, etc), please report the problems to python-dev. It would be > great to see if you can reproduce the results with the same tests that > failed. We need to determine if it is architecture specific, > test-order related, or something else. Yes, it's loads of fun :-)

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2.5 release schedule?
by Aahz 08 Mar '06

08 Mar '06

Have we reached final agreement on the 2.5 release schedule? The last message was on Feb 15, which said: alpha 1: May 6, 2006 [planned] alpha 2: June 3, 2006 [planned] alpha 3: July 1, 2006 [planned] beta 1: July 29, 2006 [planned] beta 2: August 26, 2006 [planned] rc 1: September 16, 2006 [planned] final: September 30, 2006 [planned] but http://www.python.org/doc/peps/pep-0356/ still has alpha 1: April 1, 2006 [planned] alpha 2: April 29, 2006 [planned] alpha 3: May 27, 2006 [planned] beta 1: June 24, 2006 [planned] beta 2: July 15, 2006 [planned] rc 1: August 5, 2006 [planned] final: August 19, 2006 [planned] Can we complete this? (Or does the actual PEP have the correct schedule and the web site re-org didn't get the published version updated?) -- Aahz (aahz(a)pythoncraft.com) <*> http://www.pythoncraft.com/ "19. A language that doesn't affect the way you think about programming, is not worth knowing." --Alan Perlis

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__exit__ API?
by Guido van Rossum 08 Mar '06

08 Mar '06

A few days ago there were rumbling noises that requiring __exit__ to re-raise the exception (as I amended PEP 343 at the time) could lead to easily-missed bugs in __exit__ handlers. After thinking it over I think I agree and I think I'd like to change the API so that the exception is only ignored if __exit__ returns a "true" value. The easiest implementation is probably to just let the WITH_CLEANUP opcode do everything. This becomes a rather heavy opcode then but the alternative is to generate very hairy code (like the original patch did, full of ROT 4 choruses). Any objections? I probably won't get to this until Monday. -- --Guido van Rossum (home page: http://www.python.org/~guido/)

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mail.python.org disruption
by Thomas Wouters 08 Mar '06

08 Mar '06

[ Mailed to python-dev and python-list, as that should cover most of the users ;P ] There was a slight disruption on mail.python.org this morning. For about three and a half hours, it was rejecting most of its mail with the message: Client host [....] blocked using singlehop.dsbl.org; Your mail has been rejected because the server you are sending to is misconfigured. The error means mail.python.org was using singlehop.dsbl.org as a DNSBL list, but that list doesn't exist, so it rejects all mail. Someone (not me :) added that blacklist at 08:15 local time (07:15 GMT) and I fixed it at 11:46 (10:46 GMT). Blame lingering PyCon-jetlag for me not catching it earlier, sorry. About 7759 mails were bounced, although a decent portion of them will have been actual spam (of which python.org gets massive amounts.) If you sent legitimate mail in that period, and got a bounce back with a message like the one above, it's safe to re-send it now. Sorry for the inconvenience. -- Thomas Wouters <thomas(a)python.org> Hi! I'm a .signature virus! copy me into your .signature file to help me spread!

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quit() on the prompt
by Jim Jewett 08 Mar '06

08 Mar '06

Ian reproposed: class Quitter(object): def __init__(self, name): self.name = name def __repr__(self): return 'Use %s() to exit' % self.name def __call__(self): raise SystemExit() The one change I would suggest is the string used in repr. Some of the objections to the current behavior boil down to "If it knows what I mean, why didn't it do it?" We probably can't explain first-class callables in a short message, but we could emphasize that it has to be *call*ed. Perhaps def __repr__(self): return 'Calling %s() will exit python' % self.name -jJ

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"as" mania
by Georg Brandl 08 Mar '06

08 Mar '06

Hi, while "as" is being made a keyword, I remembered parallels between "with" and a proposal made some time ago: with expr as f: do something with f while expr as f: do something with f if expr as f: do something with f elif expr as f: do something else with f What do you think? Georg

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Re: [Python-Dev] conditional expressions - add parens?
by Robert Brewer 07 Mar '06

07 Mar '06

Greg Ewing wrote: > Jeremy Hylton wrote: > > Perhaps the solution > > is to require parens around all expressions, a simple > consistent rule. > > I actually designed a language with that feature once. > It was an exercise in minimality, with hardly anything > built-in -- all the arithmetic operators, etc. were > defined in the language. > > A result was that there was no built-in notion of > precedence, and my solution was to require parentheses > around every infix operation. So instead of > > dsq = b * b - 4 * a * c > > you would have had to write > > dsq = ((b * b) - ((4 * a) * c)) > > I never got an implementation working well enough > to find out how much of a disaster this would > have been to use, though. :-) I already do that anyway, and even update other people's code in any open-source projects I contribute to, because I find it *far* easier to read and write 'unnecessary' parens than remember precedence rules. But I can understand why some people would balk at it, so +0.5 from me. ;) Robert Brewer System Architect Amor Ministries fumanchu(a)amor.org

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str(Exception) changed, is that intended?
by Thomas Heller 07 Mar '06

07 Mar '06

I know that my unittests should not rely on this, but is this change intended? c:\sf\ctypes_head>py24 Python 2.4.2 (#67, Sep 28 2005, 12:41:11) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> str(Exception) 'exceptions.Exception' >>> ^Z c:\sf\ctypes_head>py Python 2.5a0 (trunk:42903M, Mar 7 2006, 22:01:07) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> str(Exception) "<class 'exceptions.Exception'>" >>> ^Z

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