Mailman 3 November 2004 - Python-Dev

Re: [Python-Dev] [development doc updates]
by "Martin v. Löwis" 13 Nov '04

13 Nov '04

Fred L. Drake wrote: > These changes are experimental at this point, and may be changed > further or abandoned. I'm very interested in getting feedback on > these changes; if people like them, they can be put into place for > Python 2.4. I like the changes. > Please direct feedback to the Python Documentation SIG mailing list: I would have, but my mail to this list was rejected. Regards, Martin

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Re: [Python-Dev] proposal+patch: sys.gettickeraccumulation()
by Ralf W. Grosse-Kunstleve 13 Nov '04

13 Nov '04

> > Proposal: > > > > >>> sys.gettickeraccumulation.__doc__ > > 'getgettickeraccumulation() -> current count of bytecodes processed by the interpreter.' > > This doesn't offer enough to be worth rolling into the 2.4 code. I could easily provide a similar patch based on the mainline CVS. Ralf

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struct module: add OverflowErrors now?
by Armin Rigo 13 Nov '04

13 Nov '04

Hi, The struct module is too lazy in checking for overflows (it only checks some cases on some architectures). See patch #1038854. The question is: can we make it strict this late in the 2.4 release process? This *will* break some user code; the proof is that it breaks some standard library code, e.g. gzip.py, which uses a signed typecode when it really means an unsigned one. Fixing it in 2.4 would be nice, but on the other hand we could postpone it for the 2.5 trunk; people trying 2.5 early will see the problem quickly. We could add warnings for 2.4 but that looks overkill. Or we could just go ahead and break existing buggy code with 2.4b3. Opinions? Armin

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Floating point -> string conversions
by Batista, Facundo 12 Nov '04

12 Nov '04

There's a thread in the standard list (with this very Subject) that talks about implicit coercing with "%d" in strings replacement. jfouhy posted this example: >>> pow(2, 31) 2147483648L >>> '%d' % 2147483647.0 # python will convert to int '2147483647' >>> '%d' % 2147483648.0 # too big for an int, so error. Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: int argument required >>> '%d' % long(2147483648.0) # but yet, no trouble accepting a long. '2147483648' >>> '%d' % int(2147483648.0) # and int() converts to long anyway '2147483648' I think that here's a bug, but don't know where: Should %d accept only integer values? So this is a bug: >>> '%d' % 2147483647.0 '2147483647' Should %d accept also floats, and make the conversion? So there're two bugs: - In the doc (it's not explicited that it should accept a other data types) - In this behaviour difference: >>> '%d' % 2147483647.0 '2147483647' >>> '%d' % 2147483648.0 Traceback (most recent call last): ... TypeError: int argument required I really don't know about opening a bug, because I don't know which to open, :p . Facundo

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Code coverage tool updated
by Walter Dörwald 12 Nov '04

12 Nov '04

The Python code coverage tool available at http://coverage.livinglogic.de/ has been updated. (It runs the Python test suite once a month and makes the resulting code coverage info available as a web application). The backend is now Oracle instead of Postgres and is on a much faster machine. The frontend has been replaced too, so the result should be much faster and more flexible. Bye, Walter Dörwald

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@boo @hiss def NewDeclSyntaxSux():
by whisper＠oz.net 11 Nov '04

11 Nov '04

Hmm... wander off for a bit and come back to find that Python has taken a big step towards being an Ugly Language[tm]. I can hardly wait for the advent of $ and # as some sort of syntactial marker. Being in beta, it's obviously too late to do anything about it, but I think this is going to turn out to be a REALLY BAD MOVE. David LeBlanc Seattle, WA USA

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Re: [development doc updates]
by Richard Brodie 11 Nov '04

11 Nov '04

> Fred L. Drake, Jr. wrote > I'm surprised that the first and last columns aren't centered, and that the > heading for the second column is. It seems to me that: .realtable th {text-align: inherit} is more specific than .center {text-align: center} , so the second rule needs strengthening. Richard Brodie.

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Weekly Python Patch/Bug Summary
by Kurt B. Kaiser 11 Nov '04

11 Nov '04

Patch / Bug Summary ___________________ Patches : 244 open ( +3) / 2698 closed (+15) / 2942 total (+18) Bugs : 771 open (-13) / 4595 closed (+28) / 5366 total (+15) RFE : 157 open ( -1) / 134 closed ( +3) / 291 total ( +2) New / Reopened Patches ______________________ add missing __all__ to pickletools.py (2004-11-07) CLOSED http://python.org/sf/1061679 opened by George Yoshida fix for bug 1055168 (pdb not entering the right frame) (2004-11-06) CLOSED http://python.org/sf/1061767 opened by Ilya Sandler use a new -m option in pdb and profile invocations (2004-11-06) CLOSED http://python.org/sf/1061780 opened by Ilya Sandler Source code encoding in IDLE console (2004-11-07) http://python.org/sf/1061803 opened by Hye-Shik Chang [ 1061857 ] Error and omission in logging docs (2004-11-07) CLOSED http://python.org/sf/1061882 opened by Jeroen Vloothuis fix for bug 878275 class MyTest(unittest.TestSuite) (2004-11-07) CLOSED http://python.org/sf/1061904 opened by Irmen de Jong Relative to bug #1061857 -- logging docs (2004-11-07) CLOSED http://python.org/sf/1061924 opened by Rodrigo Dias Arruda Senra [ 971872 ] An apparent bug in help (2004-11-07) CLOSED http://python.org/sf/1061931 opened by Jeroen Vloothuis fix for 988120 httplib.py not updating length correctly (2004-11-07) CLOSED http://python.org/sf/1061941 opened by Irmen de Jong fix for 764437 AF_UNIX socket special linux socket names (2004-11-07) http://python.org/sf/1062014 opened by Irmen de Jong Fix for bug issue #1038693 -- bad link in Tkinter docs (2004-11-07) CLOSED http://python.org/sf/1062018 opened by Rodrigo Dias Arruda Senra Half-fix for 1027771 - DOM insertBefore (2004-11-07) CLOSED http://python.org/sf/1062033 opened by Rodrigo Dias Arruda Senra fix for 1016880 urllib.urlretrieve silently truncates dwnld (2004-11-07) http://python.org/sf/1062060 opened by Irmen de Jong deque pickling problems (2004-11-08) CLOSED http://python.org/sf/1062279 opened by Dima Dorfman set pickling problems (2004-11-08) CLOSED http://python.org/sf/1062353 opened by Dima Dorfman Pickle breakage with reduction of recursive structures (2004-11-08) http://python.org/sf/1062277 opened by Dima Dorfman distutils and python 1.5.2 (2004-11-09) CLOSED http://python.org/sf/1063059 opened by Davide Alberani Tkinter clipboard_get method (new in Tk 8.4) (2004-11-10) http://python.org/sf/1063914 opened by Martin Franklin Patches Closed ______________ add missing __all__ to pickletools.py (2004-11-06) http://python.org/sf/1061679 closed by tim_one fix for bug 1055168 (pdb not entering the right frame) (2004-11-07) http://python.org/sf/1061767 closed by jlgijsbers use a new -m option in pdb and profile invocations (2004-11-07) http://python.org/sf/1061780 closed by rhettinger [ 1061857 ] Error and omission in logging docs (2004-11-07) http://python.org/sf/1061882 closed by jlgijsbers fix for bug 878275 class MyTest(unittest.TestSuite) (2004-11-07) http://python.org/sf/1061904 closed by jlgijsbers Check for NULL returns in compile.c:com_import_stmt (2004-09-10) http://python.org/sf/1025636 closed by jhylton Relative to bug #1061857 -- logging docs (2004-11-07) http://python.org/sf/1061924 closed by jlgijsbers [ 971872 ] An apparent bug in help (2004-11-07) http://python.org/sf/1061931 closed by jlgijsbers fix for 988120 httplib.py not updating length correctly (2004-11-07) http://python.org/sf/1061941 closed by jhylton Update HTTPRespnse.length (2004-07-10) http://python.org/sf/988642 closed by jhylton Fix for bug issue #1038693 -- bad link in Tkinter docs (2004-11-07) http://python.org/sf/1062018 closed by jlgijsbers Half-fix for 1027771 - DOM insertBefore (2004-11-07) http://python.org/sf/1062033 closed by jlgijsbers deque pickling problems (2004-11-08) http://python.org/sf/1062279 closed by rhettinger set pickling problems (2004-11-08) http://python.org/sf/1062353 closed by rhettinger distutils and python 1.5.2 (2004-11-09) http://python.org/sf/1063059 closed by loewis New / Reopened Bugs ___________________ test_socket fails (2004-11-06) http://python.org/sf/1061429 opened by TPJ spelling error in win installer (2004-11-06) CLOSED http://python.org/sf/1061457 opened by Simon Dahlbacka Manual typesets bit-shift operators as guillemet (2004-11-06) http://python.org/sf/1061770 opened by Brion Vibber Error and omission in logging docs (2004-11-07) CLOSED http://python.org/sf/1061857 opened by Kent Johnson "k" specifier in PyArg_ParseTuple incomplete documentated (2004-11-07) http://python.org/sf/1061920 opened by Gustavo J. A. M. Carneiro threads: segfault or Py_FatalError at exit (2004-11-07) CLOSED http://python.org/sf/1061968 opened by Armin Rigo test_subprocess fails on winXP (2004-11-07) CLOSED http://python.org/sf/1061991 opened by Miki Tebeka locale.getdefaultlocale() returns wrong encoding (2004-11-08) CLOSED http://python.org/sf/1062261 opened by Andreas Jung pwent objects from the pwd module ar e not pickle-able (2004-11-08) http://python.org/sf/1062708 opened by Keith Dart not enough information in SGMLParserError? (2004-11-09) http://python.org/sf/1063229 opened by Alan Ezust test_subprocess 2.4b2 fails on tru64 (2004-11-10) http://python.org/sf/1063571 opened by roadkill Modules/zipimport.c does not compile on solaris (2004-11-08) CLOSED http://python.org/sf/1062495 opened by Niki W. Waibel optparse docs mildly mangled (2004-11-10) http://python.org/sf/1063757 opened by Michael Hudson IDLE aborts on any error when started with "-n" (2004-11-10) http://python.org/sf/1063840 opened by Miki Tebeka asyncore should handle ECONNRESET in send (2004-11-10) http://python.org/sf/1063924 opened by Florent Guillaume Random core dumps (2004-11-10) http://python.org/sf/1063937 opened by munder12 Bugs Closed ___________ spelling error in win installer (2004-11-06) http://python.org/sf/1061457 closed by rhettinger Why does Python link to Foundation? (2004-09-24) http://python.org/sf/1034277 closed by bcannon time module returns wrong timezone under windows (2004-10-24) http://python.org/sf/1053539 closed by bcannon incorrect "'yield' outside function" error (2004-11-04) http://python.org/sf/1060135 closed by rhettinger compiler.transformer, "from module import *" (2004-10-31) http://python.org/sf/1057835 closed by mwh pdb.set_trace should go up one more frame (2004-10-27) http://python.org/sf/1055168 closed by jlgijsbers Buffer overflow in socketmodule.c (2004-11-04) http://python.org/sf/1060396 closed by jhylton test_unicode_file fails on win2k (2004-07-12) http://python.org/sf/989338 closed by loewis 2.4b1 Win32 installer eliminates 2.3 assoc (2004-10-20) http://python.org/sf/1050486 closed by loewis Error and omission in logging docs (2004-11-07) http://python.org/sf/1061857 closed by jlgijsbers Implicit close() should check for errors (2004-05-24) http://python.org/sf/959379 closed by astrand subprocess on Windows: extra windows (2004-10-29) http://python.org/sf/1057061 closed by astrand An apparent bug in help (2004-06-12) http://python.org/sf/971872 closed by jlgijsbers httplib.HTTPResponse.read() not updating the length correctl (2004-07-09) http://python.org/sf/988120 closed by jhylton subprocess on Windows 2: unexpected failure (2004-10-29) http://python.org/sf/1057052 closed by astrand threads: segfault or Py_FatalError at exit (2004-11-07) http://python.org/sf/1061968 closed by arigo subprocess fails for args="...", executable="..." (2004-10-29) http://python.org/sf/1056441 closed by astrand test_subprocess fails on winXP (2004-11-07) http://python.org/sf/1061991 closed by tebeka bad link in Tkinter docs (2004-10-01) http://python.org/sf/1038693 closed by jlgijsbers file.next() info hidden (2004-09-29) http://python.org/sf/1036626 closed by jlgijsbers In DOM Node Objects, add more explanations for insertBefore (2004-09-14) http://python.org/sf/1027771 closed by jlgijsbers httplib throws a TypeError when the target host disconnects (2002-08-06) http://python.org/sf/591349 closed by jlgijsbers locale.getdefaultlocale() returns wrong encoding (2004-11-08) http://python.org/sf/1062261 closed by jlgijsbers senddigest error (2004-09-01) http://python.org/sf/1020605 closed by facundobatista Memory leakage in SAX with exception (2002-07-31) http://python.org/sf/589149 closed by facundobatista Include/pyport.h: Bad LONG_BIT assumption on non-glibc sys (2004-09-07) http://python.org/sf/1023838 closed by cdgregorr test_xrange fails on osf1 v5.1b (2004-09-06) http://python.org/sf/1022813 closed by dharma_roadkill Modules/zipimport.c does not compile on solaris (2004-11-08) http://python.org/sf/1062495 closed by rhettinger New / Reopened RFE __________________ Remove troublesome assert in trace.py (2004-11-07) CLOSED http://python.org/sf/1062190 opened by Jp Calderone RFE Closed __________ lock-free data structures? (2004-11-03) http://python.org/sf/1059545 closed by tim_one optparse error method doesn't print option info (2004-07-29) http://python.org/sf/1000439 closed by nestler Remove troublesome assert in trace.py (2004-11-07) http://python.org/sf/1062190 closed by rhettinger

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Synchronous and Asynchronous servers in the standard library
by Josiah Carlson 11 Nov '04

11 Nov '04

A recent patch to offer an SMTP server (SocketServer derivative) sparked the below... Question: Does we (and by 'we' I mean those in charge of developing Python) want to offer both asynchronous (deriving from asyncore, asynchat, etc.) and synchronous versions of server software in the standard library? Observations: There is currently 1 async server, and 5 sync servers in the standard library. If we want to offer both sync and async versions, it makes sense to reduce programmer effort and share as much code as possible. Idea: Set up a framework that allows Python programmers to produce async and sync variants of their servers easily. I have a partial example 'implementation' below. It seems to make sense (if such a framework is desired) to place all such modules in a 'Server' package, and to describe precisely what is necessary to make such a package usable, used, and added to in a PEP called something like "A flexible server framework". Future Python: This would obviously be a 2.5 feature/module, and I would be willing to write both the PEP (perhaps after the 1st of January, 2005 as I have a journal paper write before then) (and afterwards) translate the current standard library servers to the framework. Depending on how popular the framework is through the lifetime of Python 2.5 (if it makes it into 2.5), it may make sense to deprecate the original servers in 2.6 or 2.7 (if ever). I would be willing to volunteer to maintain the server package, or at least as many of the protocols as I understand, for 2.5 and beyond (I don't know much about XMLRPC, so translation is about as much as I could probably do). - Josiah In the case of 'chatty' protocols like SMTP, POP, etc., where the following complete, merely a prototype... class SyncServerBase: def send(self, data): if data is None: self.sock.close() else: self.sock.write(data) def close_when_done(self): self.send(None) ... class AsyncServerBase(asyncore.dispatcher): def send(self, data): #handle buffering with deque, etc. def close_when_done(self): #toss a None into the queue ... class AsynchatMixin(asynchat.async_chat): #perhaps write a better buffered reader and writer... limit = None def readable(self): #handle optional request size limit return limit is None or len(self.ac_in_buffer) < self.limit def found_terminator(self): self.request = self.ac_in_buffer self.ac_in_buffer = '' self.handle_request() ... class SMTP_Handler: def SMTP_HELO(self, cmd): .... def SMTP_MAIL(self, cmd): ... self.send(response) ... ... class SMTP_Sync(SyncServerBase, SMTP_Handler): def handle_request(self): #does all of the reading necessary to read from a socket and #handle dispatch to SMTP_* class SMTP_Async(AsyncServerBase, AsynchatMixin, SMTP_Handler): terminator = '\r\n' def handle_request(self): #command line (or email content) is provided in self.request #handles dispatch to SMTP_*, reading a line/request is provided #in this case by the AsynchatMixin Etcetera.

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python-dev Summary for 2004-10-01 through 2004-10-15 [draft]
by Brett C. 10 Nov '04

10 Nov '04

No, that subject does not have a typo; this is for the first half of October. Have two huge projects due at the end of the quarter and they are killing me. Plus I have doctoral apps to prep for and do (and suggestions on good schools in the US or even Canada would be great). Anyway, expect major delays in getting more Summaries out of the door until I am done with this quarter in December. ----------------------------------- ===================== Summary Announcements ===================== Sorry for the very late and short summary but I am in extreme crunch mode right now with school and preparing for applications to doctorate programs (any recommendations for schools with a good CS dept. and language research would be appreciated). Don't expect things to pick up again until the quarter is over (Dec. 9th is my last final). ========= Summaries ========= ---------------------- New module: subprocess ---------------------- Peter Ästrand wrote `PEP 324`_ to come up with a platform-independent way to create processes. Originally entitled popen5, it has now been added to the stdlib as subprocess. .. _PEP 324: http://www.python.org/peps/pep-0324.html Contributing threads: - `subprocess - updated popen5 module <>`__ - `python/dist/src/Lib subprocess.py,NONE,1.1 <>`__ - `Wither docs for the subprocess module? <>`__ -------------------- Python 2.4.b1 is out -------------------- `Python 2.4b1`__ has been released. As usual please download it, run the test suite, and test it with your own code. Contributing threads: - `2.4b1 release, this Friday (AU time) -- imminent TRUNK FREEZING <>`__ - `RELEASED Python 2.4, beta 1 <>`__ - `TRUNK UNFROZEN (release is done) <>`__ -------------------------------------- We need a replacement for ConfigParser -------------------------------------- David Goodger brought forward two patches for ConfigParser he wanted to apply. This quickly brought up the point that ConfigParser's API is not exactly optimal. So the decision was made to field new designs. If you happen to have your own code lying around that handles .ini files nicely then get it cleaned up and consider proposing at as a replacement. Some ideas have already been floated on the list but will have to wait for the next summary for mention/discussion. Contributing threads: - `ConfigParser patches <>`__ =============== Skipped Threads =============== - Guidelines for Logging Usage - Status of undocumented distutils features in 2.4? - Toward Python's future article - test_pep263.py is "-kb" in CVS - python/dist/src/Doc/whatsnew whatsnew24.tex, 1.108, 1.109 - Python on Windows 64bits? - About the Wise installer on Windows - Patch wanted - python/dist/src/Objects unicodeobject.c, 2.228, 2.229 - Minor cookielib changes for 2.4b1 - proposed struct module format code addition - Cyclic GC issues Just don't have the time to summarize this, but a in-depth discussion of garbage collection involving extension code and using non-Python structs. - python-dev Summary for 2004-09-16 through 2004-09-30 [draft] Lead to a discussion of executing modules in packages using the new '-m' command-line flag.

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