Mailman 3 December 2004 - Python-Dev

SRE bug and notifications
by Gustavo Niemeyer 03 Dec '04

03 Dec '04

I'm really ashamed. The SRE bug #1072259, reported in 2004-11-24, and fixed a few minutes ago, got into 2.4 final. The only reason it wasn't fixed on time for 2.4 is because I wasn't aware about it. :-( Is there any way to get notified about certain kinds of bugs in SourceForge? Or, is there any way to follow all new bugs posted? Or even, what's the easiest way to avoid that problem by being notified of bugs as soon as possible? Thank you, and I'm sorry. -- Gustavo Niemeyer http://niemeyer.net

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Unicode in doctests
by Bjorn Tillenius 03 Dec '04

03 Dec '04

There are some issues regarding the use of unicode in doctests. Consider the following three tests. >>> foo = u'föö' >>> foo u'f\xf6\xf6' >>> foo u'f\u00f6\u00f6' >>> foo u'föö' To me, those are identical. At least string comparison shows that u'f\xf6\xf6' == u'f\u00f6\u00f6' == u'föö'. Yet, only the first one of the tests passes, the other two fail. And that's if the tests are within a doc string, where I can specify the encoding used. If DocFileSuite is being used, there's no way of specify the encoding, thus all tests will fail. Is it supposed to be like this, or have I missed something? If I could specify the encoding for DocFileSuite to use, I would at least be partially happy. Regards, Bjorn

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Removing --with-wctype-functions support
by M.-A. Lemburg 03 Dec '04

03 Dec '04

I would like to remove the support for using libc wctype functions (e.g. towupper(), towlower(), etc.) from the code base. The reason is that compiling Python using this switch not only breaks the test suite, it also causes the functions .lower() and .upper() to become locale aware and creates wrong results as a result (which are hard to track down if you don't know whether Python was compiled with the wctype switch or not). The argument for having this switch at the time was to reduce the interpreter size. This was true for Python 1.6 since the Unicode type database was conditionally removed. Starting with Python 2.0 a different approach was taken which resulted in having to keep the type database in one piece - even with the switch enabled. As a result, performance became the only argument. However, because the libc functions are locale aware, the added overhead causes the libc functions not to perform better than the builtin Python versions. In the end, we loose complexity and reduce the Python configuration space by one dimension. Here's the bug that revealed the problem: https://sourceforge.net/tracker/index.php?func=detail&aid=1076790&group_id=… Question is: Should this be done in 2.4.1 or will it have to wait until 2.5 ? We might want to remove the support for 2.4.1 and simply ignore the compile time switch (or print a warning). -- Marc-Andre Lemburg eGenix.com Professional Python Services directly from the Source (#1, Dec 03 2004) >>> Python/Zope Consulting and Support ... http://www.egenix.com/ >>> mxODBC.Zope.Database.Adapter ... http://zope.egenix.com/ >>> mxODBC, mxDateTime, mxTextTools ... http://python.egenix.com/ ________________________________________________________________________ ::: Try mxODBC.Zope.DA for Windows,Linux,Solaris,FreeBSD for free ! ::::

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An import hook which does nothing
by Noam Raphael 03 Dec '04

03 Dec '04

Hello, I'm currently writing an import hook which will cache information on the local disk, instead of retrieving it every time from the slow NFS where I work. To make sure that I understand how import hooks work, and as a starting point, I wrote a dummy import hook, which is supposed to behave like the python's built-in import mechanism. I post it here, for two reasons: 1. So that developers who understand the import mechanism better than I do may review it and find things which I didn't do exactly right. 2. Because I think other people might find it helpful when writing new import hooks, as a starting point as well as for better understanding -- there's nothing like a working example to help you settle up on what does which where. (Although perhaps a few more comments, in addition to those which I wrote, might help...) (Note: I wrote the "DEBUG" parts in order to make sure that my importer works, because if it fails things might be done by the built-in importer and I won't notice. These parts can be removed, of course.) Do you think that it might be useful? Maybe something like that can go into the "examples" section of the imp module? Thanks, Noam Raphael

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[Python-checkins] python/dist/src/Doc/lib liblogging.tex, 1.33, 1.34
by Raymond Hettinger 02 Dec '04

02 Dec '04

Reminder: The head is now for Py2.5. Please also do a checkin for release24-maint. Raymond

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Weekly Python Patch/Bug Summary
by Kurt B. Kaiser 02 Dec '04

02 Dec '04

Patch / Bug Summary ___________________ Patches : 258 open ( +4) / 2701 closed ( +1) / 2959 total ( +5) Bugs : 812 open (+28) / 4642 closed (+13) / 5454 total (+41) RFE : 160 open ( +4) / 136 closed ( +1) / 296 total ( +5) New / Reopened Patches ______________________ #1074261 gzip dies on gz files with many appended headers (2004-11-27) http://python.org/sf/1074381 opened by Mark Eichin Flush stdout/stderr if closed (fix for bug 1074011) (2004-11-29) http://python.org/sf/1075147 opened by Ben Hutchings gcc compiler on Windows (2004-11-30) http://python.org/sf/1075887 opened by Michiel de Hoon AUTH PLAIN in smtplib (2004-11-30) http://python.org/sf/1075928 opened by James Lan readline does not need termcap (2004-12-01) http://python.org/sf/1076826 opened by Michal Čihař Patches Closed ______________ bug#1021756: more informative error message (2004-11-23) http://python.org/sf/1071739 closed by effbot New / Reopened Bugs ___________________ Bugs in _csv module - lineterminator (2004-11-24) http://python.org/sf/1072404 opened by Chris Withers mkarg undocumented (2004-11-24) http://python.org/sf/1072410 opened by Gunter Ohrner email as_string() omits trailing newline (2004-11-24) CLOSED http://python.org/sf/1072623 opened by Tessa Lau dyld: ./python.exe multiple definitions of symbol _BC (2004-11-24) http://python.org/sf/1072642 opened by Marius thisid not intialized in pindent.py script (2004-11-24) http://python.org/sf/1072853 opened by Niraj Bajpai ^Z doesn't exit interpreter - 2.4c1 & Win2K (2004-11-26) http://python.org/sf/1073736 opened by Kent Johnson subprocess.py doc bug in 2.4c1 (2004-11-26) CLOSED http://python.org/sf/1073790 opened by Dan Christensen 2 XML parsing errors (2004-11-26) CLOSED http://python.org/sf/1073864 opened by Peer Janssen write failure ignored in Py_Finalize() (2004-11-27) http://python.org/sf/1074011 opened by Matthias Klose current directory in sys.path handles symlinks badly (2004-11-26) http://python.org/sf/1074015 opened by Eric M. Hopper xml.dom.minidom produces errors with certain unicode chars (2004-11-27) http://python.org/sf/1074200 opened by Peer Janssen gzip dies on gz files with many appended headers (2004-11-27) http://python.org/sf/1074261 opened by Mark Eichin input from numeric pad always dropped when numlock off (2004-11-27) http://python.org/sf/1074333 opened by Rick Graves FeedParser problem on end boundaries w/o newline (2004-11-24) http://python.org/sf/1072623 reopened by tlau Irregular behavior of datetime.__str__() (2004-11-27) http://python.org/sf/1074462 opened by Wai Yip Tung Errors and omissions in logging module documentation (2004-11-28) http://python.org/sf/1074693 opened by Joachim Boomberschloss Windows 2.4c1 installer default location issues (2004-11-28) http://python.org/sf/1074873 opened by dmerrill exceeding obscure weakproxy bug (2004-11-29) http://python.org/sf/1075356 opened by Michael Hudson urllib2.HTTPBasicAuthHandler problem with [HOST]:[PORT] (2004-11-29) http://python.org/sf/1075427 opened by O-Zone PyGILState_Ensure() deadlocks (ver 2.4c1) (2004-11-29) http://python.org/sf/1075703 opened by Andi Vajda Build Bug on Solaris. (2004-11-30) CLOSED http://python.org/sf/1075934 opened by Jeremy Whiting Memory fault pyexpat.so on SGI (2004-11-30) http://python.org/sf/1075984 opened by Maik Hertha Memory fault pyexpat.so on SGI (2004-11-30) http://python.org/sf/1075990 opened by Maik Hertha HTMLParser can't handle page with javascript (2004-11-30) http://python.org/sf/1076070 opened by Jeremy Hylton distutils.core.setup() with unicode arguments broken (2004-11-30) http://python.org/sf/1076233 opened by Walter Dörwald Whats New for 2.4 "SafeTemplate" patch. (2004-11-30) CLOSED http://python.org/sf/1076365 opened by Sean Reifschneider test_shutil fails on x86-64 // Suse 9.1 (2004-11-30) http://python.org/sf/1076467 opened by Ross G Baker Jr Another message that croaks email.FeedParser (2004-11-30) http://python.org/sf/1076485 opened by Skip Montanaro Sate/Save typo in Mac/scripts/BuildApplication.py (2004-11-30) http://python.org/sf/1076490 opened by Neil Mayhew BuildApplication includes many unneeded modules (2004-11-30) http://python.org/sf/1076492 opened by Neil Mayhew python24.msi install error (2004-12-01) http://python.org/sf/1076500 opened by guan zi jing shutil.move clobbers read-only files. (2004-12-01) http://python.org/sf/1076515 opened by Jeremy Fincher test test_codecs failed (2004-12-01) http://python.org/sf/1076790 opened by Michal Čihař test test_re produced unexpected output (2004-12-01) http://python.org/sf/1076791 opened by Michal Čihař test test_unicodedata failed (2004-12-01) http://python.org/sf/1076795 opened by Michal Čihař test test_shutil failed (2004-12-01) CLOSED http://python.org/sf/1076811 opened by Michal Čihař test_shelve failures (2004-12-01) http://python.org/sf/1076819 opened by Michal Čihař Bad IDLE shortcut by 2.4 installer on XP (2004-12-01) http://python.org/sf/1076861 opened by Jean M. Brouwers Tutorial corrections (2004-12-01) http://python.org/sf/1076955 opened by Fred L. Drake, Jr. Incorrect behaviour of StreamReader.readline leads to crash (2004-12-01) http://python.org/sf/1076985 opened by Sebastian Hartte Error building _bsddb extension (2004-12-01) http://python.org/sf/1077040 opened by Oleg Broytmann Problem testing python 2.4 (2004-12-01) http://python.org/sf/1077103 opened by Pierre Negative numbers to os.read() cause segfault (2004-12-01) http://python.org/sf/1077106 opened by Jp Calderone Bugs Closed ___________ coercing decimal to int doesn't work between -1 and 1 (2004-11-23) http://python.org/sf/1071588 closed by rhettinger OS X (Panther) Framework Install causes version mismatch (2004-11-18) http://python.org/sf/1069198 closed by bcannon urllib2 authentication redirection error(?) (2004-11-22) http://python.org/sf/1071147 closed by facundobatista shelve update fails on "large" entry (2002-02-27) http://python.org/sf/523425 closed by facundobatista new int overflow handling needs docs (2001-08-23) http://python.org/sf/454446 closed by facundobatista subprocess.py doc bug in 2.4c1 (2004-11-26) http://python.org/sf/1073790 closed by astrand 2 XML parsing errors (2004-11-26) http://python.org/sf/1073864 closed by peerjanssen gzip module cannot write large files (2003-02-08) http://python.org/sf/683061 closed by jlgijsbers FeedParser problem on end boundaries w/o newline (2004-11-24) http://python.org/sf/1072623 closed by bwarsaw FeedParser problem on end boundaries w/o newline (2004-11-24) http://python.org/sf/1072623 closed by bwarsaw Build Bug on Solaris. (2004-11-30) http://python.org/sf/1075934 closed by whitingjr Whats New for 2.4 "SafeTemplate" patch. (2004-11-30) http://python.org/sf/1076365 closed by akuchling 'Demo/embed/' , It crash (2003-12-04) http://python.org/sf/853862 closed by guanzijing test test_shutil failed (2004-12-01) http://python.org/sf/1076811 closed by nijel New / Reopened RFE __________________ Extension to optparse: options with facultative value (2004-11-25) http://python.org/sf/1073198 opened by pollastri Extension to optparse: options with facultative value (2004-11-25) CLOSED http://python.org/sf/1073305 opened by pollastri ignore element format character for PyArg_ParseTuple (2004-11-30) http://python.org/sf/1075902 opened by Sean Proctor Python Interpreter embedded in small memory system (2004-12-01) http://python.org/sf/1076478 opened by stoneabcwujx RFE Closed __________ Extension to optparse: options with facultative value (2004-11-25) http://python.org/sf/1073305 closed by nnorwitz

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adding key argument to min and max
by Steven Bethard 02 Dec '04

02 Dec '04

This is my first post to Python dev, so I figured I should introduce myself. My name's Steven Bethard and I'm a computer science Ph.D. student at the University of Colorado at Boulder working primarily in the areas of natural language processing and machine learning. During my undergrad at the University of Arizona, I worked as a teaching assistant teaching Java for 2 1/2 years, though now that I'm at CU Boulder I pretty much only work in Python. I started getting active on the Python list about 6 months ago, and I've been watching python-dev for the last few months. On to the real question... I posted a few notes about this on the python-list and didn't hear much of a response, so I thought that maybe python-dev is the more appropriate place (since it involves a change to some of the builtin functions). For Python 2.5, I'd like to add a keyword argument 'key' to min and max like we have now for list.sort and sorted. I've needed this a couple of times now, specifically when I have something like a dict of word counts, and I want the most frequent word, I'd like to do something like: >>> d = dict(aaa=3000, bbb=2000, ccc=1000) >>> max(d, key=d.__getitem__) 'aaa' I've implemented a patch that provides this functionality, but there are a few concerns about how it works. Here's some examples of what it does now: >>> d = dict(aaa=3000, bbb=2000, ccc=1000) >>> max(d) 'ccc' >>> max(d, key=d.__getitem__) 'aaa' >>> max(d, d.__getitem__) {'aaa': 3000, 'bbb': 2000, 'ccc': 1000} >>> max(('aaa', 3000), ('bbb', 2000), ('ccc', 1000)) ('ccc', 1000) >>> max(('aaa', 3000), ('bbb', 2000), ('ccc', 1000), key=operator.itemgetter(1)) ('aaa', 3000) >>> max(('aaa', 3000), ('bbb', 2000), ('ccc', 1000), operator.itemgetter(1)) ('ccc', 1000) Note the difference between the 2nd and 3rd use of max in each example. For backwards compatibility reasons, the 'key' argument cannot be specified as a positional argument or it will look like max is being used in the max(a, b, c, ...) form. This means that a 'key' argument can *only* be specified as a keyword parameter, thus giving us the asymmetry we see in these examples. My real question then is, is this asymmetry a problem? Is it okay to have a parameter that is *only* accessable as a keyword parameter? Thanks, Steve -- You can wordify anything if you just verb it. --- Bucky Katt, Get Fuzzy

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TRUNK UNFROZEN; release24-maint branch has been cut
by Anthony Baxter 01 Dec '04

01 Dec '04

I've cut the release24-maint branch, and updated the Include/patchlevel.h on trunk and branch (trunk is now 2.5a0, branch is 2.4+) The trunk and the branch are now both unfrozen and suitable for checkins. The feature freeze on the trunk is lifted. Remember - if you're checking bugfixes into the trunk, either backport them to the branch, or else mark the commit message with 'bugfix candidate' or 'backport candidate' or the like. Next up will be a 2.3.5 release. I'm going to be travelling for a large chunk of December (at very short notice) so it's likely that this will happen at the start of January. If someone else wants to cut a 2.3.5 sooner than that, please feel free to volunteer! 2.3.5 will be the last 2.3.x release, barring some almighty cockup - the next scheduled release will be 2.4.1, which will probably happen around May 2005. Anthony and yes, I'm drinking.

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Python 2.4 README
by Oleg Broytmann 01 Dec '04

01 Dec '04

Hello. Python 2.4 README still thinks it is 2.3. README lines 230-231: "A number of features are not supported in Python 2.3 anymore. Some support code is still present, but will be removed in Python 2.4." "Will be"? Isn't it 2.4 already? :) Line 322: "Tcl to support it. To compile Python2.3 with Tkinter, you will" Python2.4, I suppose? Oleg. -- Oleg Broytmann http://phd.pp.ru/ phd(a)phd.pp.ru Programmers don't die, they just GOSUB without RETURN.

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Roster Deadline
by Tim Hochberg 01 Dec '04

01 Dec '04

Hi Larry, FYI: I asked EB about the roster deadline and she says that she doesn't know when it is either. Checking on the Lei Out web page didn't help much either. So, you are no wiser now than at the start of this message. -tim

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