Mailman 3 November 2007 - Python-Dev

test_doctest failing
by Brett Cannon 24 Nov '07

24 Nov '07

Looks like Skip's r59137 fix for working with tracing has led to test_doctest to be broken on 2.5 and the trunk (at least according to the buildbots). Can someone either revert the commit or fix it? I would normally do it myself but US Thanksgiving has me tied up to not do too much beyond bitching about the amount of buildbot emails I have been getting. =) -Brett

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Re: [Python-Dev] Should we do away with unbound methods in Py3k?
by Phillip J. Eby 24 Nov '07

24 Nov '07

At 09:56 AM 11/24/2007 -0800, Guido van Rossum wrote: >Also, there was discussion of this before: >http://mail.python.org/pipermail/python-dev/2005-January/050625.html >-- why didn't we decide to do it then? http://mail.python.org/pipermail/python-dev/2005-January/051236.html There were also a few protests of use cases that could not be worked around (e.g. pickling methods), and a few people pointed out that the type checking actually *is* useful when using explicit base calls (BaseClass.somemethod(self,...)), as it usually catches when you forget to include the self argument.) (Note that super() doesn't do away with the need for such explicit upcalls, especially in __init__, as multiple-inheriting classes with non-cooperative bases usually need to individually call the base class __init__ methods.)

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Backquote deprecation warning
by Christian Heimes 23 Nov '07

23 Nov '07

Hello! I'm having a bit of a trouble getting the deprecation warning for backquotes `repr` right. Neither the ast_for_* functions in Python/ast.c nor the node structures have access to the filename. Should the node structure gain an additional field to drag the filename around? Or can we simply life with the fact that the user won't get a filename in the deprecation warning? Christian

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ssl module integration with asyncore
by Giampaolo Rodola' 23 Nov '07

23 Nov '07

Hi there, since ssl module is still in development I thought it would have been better asking such question here instead of on comp.lang.python. I'm interested in using the ssl module with asyncore but since there's no real documentation about it yet I've been not able to write something useful with it. Currently I'm trying to add the SSL support to an asyncore-based FTP server I wrote. I tried to write some code by watching the ssl-related test-suite scripts with no luck since there are no available tests for asyncore available. I tried to play with the wrap_socket() function a little bit but different types of error are raised every time. I'm sure this happens because I'm not doing things in the right way. Could someone please show me an example code about how the ssl module could be integrated with asyncore?

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Summary of Tracker Issues
by Tracker 23 Nov '07

23 Nov '07

ACTIVITY SUMMARY (11/16/07 - 11/23/07) Tracker at http://bugs.python.org/ To view or respond to any of the issues listed below, click on the issue number. Do NOT respond to this message. 1321 open (+20) / 11654 closed (+20) / 12975 total (+40) Open issues with patches: 413 Average duration of open issues: 697 days. Median duration of open issues: 825 days. Open Issues Breakdown open 1314 (+19) pending 7 ( +1) Issues Created Or Reopened (41) _______________________________ Python does not honor "CFLAGS" environment variable 11/16/07 CLOSED http://bugs.python.org/issue1453 created tebeka Generators break trace functionality 11/17/07 CLOSED http://bugs.python.org/issue1454 created cortesi VS2008, quick hack for distutils.msvccompiler 11/17/07 http://bugs.python.org/issue1455 created tiran py3k, patch unexpected iterator behavior with removal 11/18/07 CLOSED http://bugs.python.org/issue1456 created JosephArmbruster IDLE - configDialog - new layout for key config 11/18/07 http://bugs.python.org/issue1457 created taleinat installer crashes on attempted cancellation 11/18/07 http://bugs.python.org/issue1458 created JosephArmbruster Bugs lost on migration from Sourceforge 11/18/07 CLOSED http://bugs.python.org/issue1459 created gagenellina codecs utf7 decoding error 11/19/07 CLOSED http://bugs.python.org/issue1460 created arnimar 0**0 should raise an error 11/19/07 CLOSED http://bugs.python.org/issue1461 created jmgillet About this document refers to SourceForge tracker 11/19/07 CLOSED http://bugs.python.org/issue1462 created kjohnson Minor error in mimetypes docs 11/19/07 CLOSED http://bugs.python.org/issue1463 created kjohnson inet_pton redefined while building with windows SDK 6.0 11/19/07 CLOSED http://bugs.python.org/issue1464 created weck py3k, patch building python 2.6 with VC Express 2008 Beta2 11/19/07 http://bugs.python.org/issue1465 created weck patch Special reporting of NotImplementedError in unittest 11/19/07 CLOSED http://bugs.python.org/issue1466 created erik_andersen error in TestResult.addError and TestResult.addFailure 11/19/07 http://bugs.python.org/issue1467 created draghuram MSI installer does not include SSL test .pem files 11/19/07 http://bugs.python.org/issue1468 created pmoore SSL tests leak memory 11/19/07 http://bugs.python.org/issue1469 created janssen py3k py3k unit tests are removing %TEMP% dir on Windows 11/20/07 CLOSED http://bugs.python.org/issue1470 created tiran py3k ioctl doesn't work properly on 64-bit OpenBSD 11/20/07 http://bugs.python.org/issue1471 created fbvortex Small bat files to build docs on Windows 11/20/07 http://bugs.python.org/issue1472 created tiran py3k, patch Drop _EXPORTS macros in PCbuild9 11/20/07 CLOSED http://bugs.python.org/issue1473 created loewis py3k PCbuild9 patch for trunk 11/20/07 CLOSED http://bugs.python.org/issue1474 created tiran patch test_popen fails when the directory contains a space 11/20/07 http://bugs.python.org/issue1475 created tiran py3k missing debug configuration for make_versioninfo.vcproj 11/20/07 CLOSED http://bugs.python.org/issue1476 created JosephArmbruster UnicodeDecodeError that cannot be caught in narrow unicode build 11/20/07 http://bugs.python.org/issue1477 created sbp pythoncore.vcproj fails to generate buildinfo (when spaces in pa 11/21/07 CLOSED http://bugs.python.org/issue1478 created JosephArmbruster py3k, patch csv module is leaking references 11/21/07 http://bugs.python.org/issue1479 created tiran py3k sqlite module is leaking lots of references 11/21/07 http://bugs.python.org/issue1480 created tiran py3k test_uuid is warning about unreliable functions 11/21/07 http://bugs.python.org/issue1481 created tiran py3k IMAP4 SSL isn't working 11/21/07 http://bugs.python.org/issue1482 created tiran py3k xml.sax.saxutils.prepare_input_source ignores character stream i 11/21/07 http://bugs.python.org/issue1483 created ygale logging: callHandlers tests handler levels instead of logger lev 11/21/07 CLOSED http://bugs.python.org/issue1484 created gidi_avrahami Idle tab command completion 11/22/07 CLOSED http://bugs.python.org/issue1485 created Mufasa Idle tab command completion 11/22/07 CLOSED http://bugs.python.org/issue1486 created Mufasa PEP 366 implementation 11/22/07 http://bugs.python.org/issue1487 created ncoghlan patch PCBuild9 _ssl.vcproj improperly launches build 11/22/07 CLOSED http://bugs.python.org/issue1488 created JosephArmbruster py3k, patch test_socket_ssl hanhs on Windows (deadlock) 11/22/07 http://bugs.python.org/issue1489 created pmoore Bug in eval() function 11/23/07 CLOSED http://bugs.python.org/issue1490 created arunkumarrajan BaseHTTPServer incorrectly implements response code 100 11/23/07 http://bugs.python.org/issue1491 created samwyse BaseHTTPServer hard-codes Content-Type for error messages 11/23/07 http://bugs.python.org/issue1492 created samwyse Add a -z interpreter flag to execute a zip file 11/19/07 CLOSED http://bugs.python.org/issue1739468 reopened ncoghlan patch Issues Now Closed (43) ______________________ pyexpat.XMParserType broken (was: pydoc doesn't work on pyexpat) 87 days http://bugs.python.org/issue1020 tiran py3k os.system() encoding bug on Windows 57 days http://bugs.python.org/issue1193 amaury.forgeotdarc py3k string find and rfind methods give a TypeError that is misleadin 37 days http://bugs.python.org/issue1259 facundobatista PCBuild8 Solution Support Changes 27 days http://bugs.python.org/issue1320 tiran windows installer problem 20 days http://bugs.python.org/issue1354 loewis zlibmodule.c: int overflow in PyZlib_decompress 19 days http://bugs.python.org/issue1372 tiran patch, 64bit Backport abcoll to 2.6 17 days http://bugs.python.org/issue1383 gvanrossum patch py3k: duplicated line endings when using read(1) 14 days http://bugs.python.org/issue1395 amaury.forgeotdarc py3k py_compile and compileall need unit tests 13 days http://bugs.python.org/issue1403 tiran py3k pth files not loaded at startup 4 days http://bugs.python.org/issue1431 brett.cannon patch logging.config.fileConfig, NameError: name 'RotatingFileHandler' 7 days http://bugs.python.org/issue1436 vsajip utf_8_sig streamreader bug, patch, and test 4 days http://bugs.python.org/issue1444 doerwalter patch make msi work the vs 2005(MSVC8) 3 days http://bugs.python.org/issue1449 tiran patch Python does not honor "CFLAGS" environment variable 0 days http://bugs.python.org/issue1453 loewis Generators break trace functionality 1 days http://bugs.python.org/issue1454 gvanrossum unexpected iterator behavior with removal 0 days http://bugs.python.org/issue1456 tiran Bugs lost on migration from Sourceforge 0 days http://bugs.python.org/issue1459 brett.cannon codecs utf7 decoding error 2 days http://bugs.python.org/issue1460 amaury.forgeotdarc 0**0 should raise an error 0 days http://bugs.python.org/issue1461 gvanrossum About this document refers to SourceForge tracker 0 days http://bugs.python.org/issue1462 brett.cannon Minor error in mimetypes docs 0 days http://bugs.python.org/issue1463 facundobatista inet_pton redefined while building with windows SDK 6.0 1 days http://bugs.python.org/issue1464 tiran py3k, patch Special reporting of NotImplementedError in unittest 0 days http://bugs.python.org/issue1466 erik_andersen py3k unit tests are removing %TEMP% dir on Windows 0 days http://bugs.python.org/issue1470 tiran py3k Drop _EXPORTS macros in PCbuild9 1 days http://bugs.python.org/issue1473 tiran py3k PCbuild9 patch for trunk 3 days http://bugs.python.org/issue1474 tiran patch missing debug configuration for make_versioninfo.vcproj 0 days http://bugs.python.org/issue1476 tiran pythoncore.vcproj fails to generate buildinfo (when spaces in pa 0 days http://bugs.python.org/issue1478 tiran py3k, patch logging: callHandlers tests handler levels instead of logger lev 1 days http://bugs.python.org/issue1484 vsajip Idle tab command completion 0 days http://bugs.python.org/issue1485 facundobatista Idle tab command completion 1 days http://bugs.python.org/issue1486 facundobatista PCBuild9 _ssl.vcproj improperly launches build 1 days http://bugs.python.org/issue1488 JosephArmbruster py3k, patch Bug in eval() function 0 days http://bugs.python.org/issue1490 loewis trace.py needs to know about doctests 650 days http://bugs.python.org/issue1429818 skip.montanaro patch sqlite timestamp converter bug (floating point) 371 days http://bugs.python.org/issue1597404 ghaering Improve platform.py usability on Windows 337 days http://bugs.python.org/issue1620174 lemburg patch Importing a submodule fails after unloading its parent 171 days http://bugs.python.org/issue1731068 tiran python 2.6 latest fails test_socketserver.py 170 days http://bugs.python.org/issue1732145 tiran sqlite3 module trigger problem 168 days http://bugs.python.org/issue1733085 ghaering Add a -z interpreter flag to execute a zip file 0 days http://bugs.python.org/issue1739468 gvanrossum patch Deprecation warning for `backticks` 131 days http://bugs.python.org/issue1754271 tiran patch Deprecation warning for <> (NOTEQUAL) 131 days http://bugs.python.org/issue1754273 tiran patch MSVC++8 x86 tkinter build patch for trunk 110 days http://bugs.python.org/issue1767787 tiran patch Top Issues Most Discussed (10) ______________________________ 9 Add a -z interpreter flag to execute a zip file 0 days closed http://bugs.python.org/issue1739468 9 VS2008, quick hack for distutils.msvccompiler 6 days open http://bugs.python.org/issue1455 8 Special reporting of NotImplementedError in unittest 0 days closed http://bugs.python.org/issue1466 7 Python does not honor "CFLAGS" environment variable 0 days closed http://bugs.python.org/issue1453 6 test_popen fails when the directory contains a space 3 days open http://bugs.python.org/issue1475 6 building python 2.6 with VC Express 2008 Beta2 4 days open http://bugs.python.org/issue1465 5 PCBuild9 _ssl.vcproj improperly launches build 1 days closed http://bugs.python.org/issue1488 4 Idle tab command completion 1 days closed http://bugs.python.org/issue1486 4 ioctl doesn't work properly on 64-bit OpenBSD 4 days pending http://bugs.python.org/issue1471 4 py3k unit tests are removing %TEMP% dir on Windows 0 days closed http://bugs.python.org/issue1470

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1324 bugs in the tracker
by Christian Heimes 23 Nov '07

23 Nov '07

Dear fellow Python developers! The Python bug tracker contains more than 1,300 bugs and it's growing. And growing ... and growing. I'm picking a bug once in a while or tossing some invalid bugs away but it's a helpless cause. The bugs are augmenting with anybody stopping them. Well, I'm exaggerating a bit but you probably get my point. The core developers can't keep up with new bugs and check old bugs at the same time. The resources are already stretched thin. But Brett gave me an idea how we could solve the problem when he posted the link to http://www.djangoproject.com/documentation/contributing/#ticket-triage. What do you think about inviting some trustworthy and experienced Python users to join the cause? They don't need to solve every problem and they won't need developer access to the svn. Instead their task is cleaning up the tracker, categorizing bugs and checking patches. The tracker sure contains a lot of outdated junk and already fixed bugs. A group of five to ten highly motivated people could squall through the tracker smashing all those ugly bugs like the infantry in Starship Troopers - but hopefully with less loss on our side. :] Christian

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Re: [Python-Dev] Should we do away with unbound methods in Py3k?
by Phillip J. Eby 23 Nov '07

23 Nov '07

At 08:19 PM 11/22/2007 -0800, Guido van Rossum wrote: >It looks like we're in agreement to drop unbound methods and have a >reasonable set or arguments around it (e.g. keep staticmethod, no >changes to methods of builtin types, etc.). Do we need a PEP? It's >essentially a 2-line change in funcobject.c (func_descr_get()) -- plus >fixing up half a dozen or so unittests that specifically seem to test >the behavior of unbound methods. Since the only meaningful difference between an unbound method and a function is the availability of the im_class attribute, I Googled 'im_class ext:py' to see what's using it. There were 314 hits uses in published code, and I skimmed the first 60 or 70 of those. Of the ones I looked at, relatively few actually do anything with unbound methods specifically. Most are just custom pickling or persistence for methods, or method replacements like a "weakref method" that doesn't keep a strong reference to im_self. However, a few uses relevant to unbound methods turned up, however. Some documentation tools, an AOP library, an xreload()-like module reloader from Enthought, plus one usage in the stdlib. There were also a few modules where it was difficult to tell if unbound methods were actually important. While for most of the documentation tools it was probably not relevant, there were some (like a method deprecation utility) that looked like they would lose functionality by not being able to get the im_class of an object. The stdlib usage is in the unittest module: the test loading machinery needs to know the class of an unbound method so it knows what TestCase subclass to instantiate, when loading a single test by name. This could probably be worked around by making the routine keep track of the object from which the target object was retrieved. This is far from a comprehensive survey; 'UnboundMethodType ext:py' turns up 102 more hits, including another testing tool that uses unbound methods in a different way. There are also usage patterns that can't easily be searched for. For example, code that wants to be able to distinguish static methods and instance methods at the class level. Most of these use cases could probably be worked around, with sufficient effort. Many will probably have bigger problems porting to 3.0 than the absence of unbound methods. And I don't personally have a horse in this race, as my own code is surprisingly free of im_class use. Actually, given how many places my code is peppered with '.im_func' calls to *unwrap* unbound methods and reuse them in other classes, I probably lean more towards getting rid of them. :)

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PCbuild9 for the trunk
by Christian Heimes 22 Nov '07

22 Nov '07

Just for your information: I've back-ported the PCbuild9 directory from py3k to the trunk. You now can build Python 2.6 and 3.0 with the new Visual Studio 2008. As far as I've heard from other it works with the free Express Edition. MSDN subscribers with the Standard or Professional version can also create PGO builds with the new directory. Preliminary tests are showing that PGO builds are roughly 10% faster than standard builds. Have fun! Christian

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Tracker summary emails
by Paul Moore 22 Nov '07

22 Nov '07

Is it only me who thinks that the current daily summaries are a bit frequent? Would it be possible to reduce the frequency to, say, once a week? I can set up a filter to simply ditch the things, but I thought I'd check what other people's views are before I did. Paul.

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A crash during interpreter cleanup when using PyGILState APIs
by Ronald Oussoren 22 Nov '07

22 Nov '07

An extension module I use makes extensive use of the PyGILState API's in callback functions for C APIs. Some of the functions that use the PyGILState APIs are used in the tp_dealloc of methods. This seems cause problems when objects are cleaned up during interpreter shutdown: when an object is deallocated during PyInterpreterState_Clear I get a hard crash because the GILState machinery has been shut down at that time :-( The bug report for this: http://bugs.python.org/issue1402 The report includes a patch, but I know just enough about the python threading infrastructure to be dangerous and am not convinced that the patch is actually correct. Ronald

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