Mailman 3 January 2004 - Python-Dev

Re: sre warnings
by Gustavo Niemeyer Jan. 20, 2004

Jan. 20, 2004

[forwarding to python-dev for general ack] > The changes to re are still throwing off signed/unsigned warnings. Can > you please get that fixed up? My changes to sre have nothing to do with these warnings. These are being caused by the fact that gcc throws a warning even with casts in the following situation: char i = 0; if ((int)i < 256) ... Unlike one might think, this is a valid test because the type of 'i' is not always char. I won't fix these warnings until I find an elegant solution to workaround the gcc stupidity. -- Gustavo Niemeyer http://niemeyer.net

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Stackless Python
by Eric Mathew Hopper Jan. 20, 2004

Jan. 20, 2004

I'm working on a project (http://www.cakem.net/) that involves networking. I have to do a lot of decoding of network data into an internal representation, and encoding internal representations into a network format. The decoding part is going to present a problem, a problem that could easily be solved by continuations. I want to right the code so that it will work when there is no guarantee that I'll have an entire message before I start decoding it. This means the parser may have have to stop at any random point in time, and then be restarted again when more data is available. I see no way to do this without continuations, or threads, and I refuse to use threads for something like this. For now, I think I will do one of two things. Either build in the assumption that I will have the entire messages before I start parsing, or organize parsing as a series of steps that can be aborted in the middle and then restarted, and use exceptions to track whether the step was fully completed or not. Sort of a poor man's continuation. Anyway, I'm not a Python developer, just a user. I just wanted to add this to the things you consider when you decide what you intend to do next with Python. Continuations are important, and AFAIK, the stackless mod is the only way to get them. Thanks, -- "It does me no injury for my neighbor to say there are twenty gods or no God. It neither picks my pocket nor breaks my leg." --- Thomas Jefferson "Go to Heaven for the climate, Hell for the company." -- Mark Twain -- Eric Hopper (hopper(a)omnifarious.org http://www.omnifarious.org/~hopper) --

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Re: 2.2 features
by François Pinard Jan. 20, 2004

Jan. 20, 2004

[Guido van Rossum] > Marcin 'Qrczak' Kowalczyk <qrczak(a)knm.org.pl> writes: > > Now thow in 'isinstance' as an old way to spell a specific membership > > test (for types and classes) which doesn't have to be learned about > > at all. > I love it. 'x in type' as a shorthand for isinstance(x, type). > Checked into CVS! The above exchange is dated 2001-07-31, and I'm merely glancing over some old saved email. The above feature does not seem to be implemented in Python 2.3.2, as demonstrated by the script below. Has it been retracted? Not that I really need it, however! :-) Python 2.3.2 (#1, Nov 9 2003, 20:14:22) [GCC 3.3 20030226 (prerelease) (SuSE Linux)] on linux2 Type "help", "copyright", "credits" or "license" for more information. from __future__ import nested_scopes, generators, division del __future__, fcntl, termios, joined, character, nested_scopes, generators, division sys.ps1 = '>>> ' from __future__ import nested_scopes, generators, division del __future__, fcntl, termios, joined, character, nested_scopes, generators, division sys.ps1 = '>>> ' >>> 0 in int Traceback (most recent call last): File "<stdin>", line 1, in ? TypeError: iterable argument required >>> isinstance(0, int) True >>> int <type 'int'> >>> -- François Pinard http://www.iro.umontreal.ca/~pinard

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Unicode collation algorithm
by WANGNICK Sebastian Jan. 19, 2004

Jan. 19, 2004

Dear all, I'm working on a Python program to access a database of populated places in the world. This database originates from an Excel table containing Unicode place names. I'd like to present this huge list to the users properly sorted. There were plans to provide the Unicode collation algorithm back in 2002 at the EuroPython conference in Brussels, but seemingly these didn't materialize. Is anybody working on this? Regards, Sebastian -- Dipl.-Inform. Sebastian <dot> Wangnick <at eurocontrol dot int> Office: Eurocontrol Maastricht UAC, Horsterweg 11, NL-6199AC Maastricht-Airport, Tel: +31-433661-370, Fax: -300 ____ This message and any files transmitted with it are legally privileged and intended for the sole use of the individual(s) or entity to whom they are addressed. If you are not the intended recipient, please notify the sender by reply and delete the message and any attachments from your system. Any unauthorised use or disclosure of the content of this message is strictly prohibited and may be unlawful. Nothing in this e-mail message amounts to a contractual or legal commitment on the part of EUROCONTROL unless it is confirmed by appropriately signed hard copy. Any views expressed in this message are those of the sender.

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PyCon Reminder: Early bird reg deadline 2/1
by Guido van Rossum Jan. 19, 2004

Jan. 19, 2004

Info ---- This is a reminder that the deadline for early bird registration for PyCon DC 2004 is February 1, 2004. Early bird registration is $175; after that, it will be $200 through March 17, then $250 at the door. To register, visit: http://www.pycon.org/dc2004/register/ Plug ---- PyCon is the most important conference in the year for me. It brings together the largest group of Python users and developers imaginable. I come to PyCon for many reasons: to meet with other core Python developers face to face; to hear about the exciting things that users from all over the world are doing with Python; to interact in person with Python users of all types, from newbies to veterans of many years; to hear everybody's feedback on where Python is and where they'd like it to go; and perhaps most of all to continue to encourage this wonderful community by my presence, words and actions to grow, reach out to new users of all kinds, and keep listening to each other. I hope everyone who comes to the conference will return from it with a new or renewed feeling of excitement about Python, whether they are developers, sophisticated users, beginners, or even skeptical passers-by. The Python community includes everyone, from grade schoolers just learning about computer science to renowned scientists interested in using the best tools and business people looking for a secret weapon. I'm looking forward to seeing you all at PyCon! Background ---------- PyCon is a community-oriented conference targeting developers (both those using Python and those working on the Python project). It gives you opportunities to learn about significant advances in the Python development community, to participate in a programming sprint with some of the leading minds in the Open Source community, and to meet fellow developers from around the world. The organizers work to make the conference affordable and accessible to all. DC 2004 will be held March 24-26, 2004 in Washington, D.C. The keynote speaker is Mitch Kapor of the Open Source Applications Foundation (http://www.osafoundation.org/). There will be a four-day development sprint before the conference. We're looking for volunteers to help run PyCon. If you're interested, subscribe to http://mail.python.org/mailman/listinfo/pycon-organizers Don't miss any PyCon announcements! Subscribe to http://mail.python.org/mailman/listinfo/pycon-announce You can discuss PyCon with other interested people by subscribing to http://mail.python.org/mailman/listinfo/pycon-interest The central resource for PyCon DC 2004 is http://www.pycon.org/ --Guido van Rossum (home page: http://www.python.org/~guido/)

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Fwd: Want to have S E X, 20 times a day ?
by Python-list-owner Jan. 19, 2004

Jan. 19, 2004

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Re: [Python-checkins] python/dist/src/Objects listobject.c, 2.176, 2.177
by Hye-Shik Chang Jan. 18, 2004

Jan. 18, 2004

On Sun, Jan 18, 2004 at 12:31:04PM -0800, tim_one(a)users.sourceforge.net wrote: > Update of /cvsroot/python/python/dist/src/Objects > In directory sc8-pr-cvs1:/tmp/cvs-serv17990 > > Modified Files: > listobject.c > Log Message: > Revert change accidentally checked in as part of a whitespace normalization > patch. > > > Index: listobject.c > =================================================================== > RCS file: /cvsroot/python/python/dist/src/Objects/listobject.c,v [snip] > *************** > *** 1882,1887 **** > saved_ob_item = self->ob_item; > self->ob_size = 0; > ! /* self->ob_item = empty_ob_item = PyMem_NEW(PyObject *, 0); */ > ! self->ob_item = empty_ob_item = PyMem_NEW(PyObject *, roundupsize(0)); > > if (keyfunc != NULL) { > --- 1879,1883 ---- > saved_ob_item = self->ob_item; > self->ob_size = 0; > ! self->ob_item = empty_ob_item = PyMem_NEW(PyObject *, 0); > > if (keyfunc != NULL) { Is there a particular reason for allocating zero-sized memory for this? On my test, assigning NULL on self->ob_item instead is worked either. Hye-Shik

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Weekly Python Bug/Patch Summary
by Skip Montanaro Jan. 18, 2004

Jan. 18, 2004

Bug/Patch Summary ----------------- 659 open / 4522 total bugs (+127) 237 open / 2535 total patches (+44) New Bugs -------- threading module can deadlock after fork (2004-01-11) http://python.org/sf/874900 file.read returns reaches EOF when it shouldn't (2004-01-11) http://python.org/sf/875157 global stmt causes breakpoints to be ignored (2004-01-12) http://python.org/sf/875404 Make popen raise an exception if cmd doesn't exist (2004-01-12) http://python.org/sf/875471 email.Utils.formataddr doesn't handle whitespace too well (2004-01-12) http://python.org/sf/875646 add support for installations compiled for debugging (2004-01-12) http://python.org/sf/875654 Ctrl-C doesn't work with sleepy main thread (2004-01-12) http://python.org/sf/875692 Unbounded recursion in modulefinder (2004-01-13) http://python.org/sf/876278 logging handlers raise exception on level (2004-01-13) http://python.org/sf/876421 potential leak in ensure_fromlist (import.c) (2004-01-13) http://python.org/sf/876533 Random stack corruption from socketmodule.c (2004-01-13) http://python.org/sf/876637 configure detects incorrect compiler optimization (2004-01-14) http://python.org/sf/877121 configure links unnecessary library libdl (2004-01-14) http://python.org/sf/877124 distutils - compiling C++ ext in cyg or mingw w/ std Python (2004-01-14) http://python.org/sf/877165 freeze: problems excluding site (2004-01-15) http://python.org/sf/877904 Zipfile archive name can't be unicode (2004-01-16) http://python.org/sf/878120 optparse indents without respect to $COLUMNS (2004-01-16) http://python.org/sf/878453 optparse help text is not easily extensible (2004-01-16) http://python.org/sf/878458 Would like a console window for applets (2004-01-16) http://python.org/sf/878560 pwd and grp modules error msg improvements (2004-01-16) http://python.org/sf/878572 I would like an easy way to get to file creation date (2004-01-16) http://python.org/sf/878581 suspect documentation of operator.isNumberType (2004-01-17) http://python.org/sf/878908 New Patches ----------- Shadow Password Support Module (2002-07-09) http://python.org/sf/579435 >100k alloc wasted on startup (2004-01-12) http://python.org/sf/875689 input() vs __future__ (2004-01-13) http://python.org/sf/876178 reorganize, extend function call optimizations (2004-01-13) http://python.org/sf/876193 easiest 1% improvement in pystone ever (2004-01-13) http://python.org/sf/876198 scary frame speed hacks (2004-01-13) http://python.org/sf/876206 Closed Bugs ----------- inconsistent popen[2-4]() docs (2003-11-16) http://python.org/sf/843293 Multiple problems with GC in 2.3.3 (2004-01-01) http://python.org/sf/868896 Py_SequenceFast can mask errors (2004-01-06) http://python.org/sf/871704 Wrong URL for external documentation link (Lib ref 11.9) (2004-01-08) http://python.org/sf/873205 Closed Patches -------------- add link to DDJ's article (2004-01-05) http://python.org/sf/871402

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PEP0004: audioop deprecated?
by Anthony Baxter Jan. 18, 2004

Jan. 18, 2004

According to PEP-0004 and PEP-0320, the audioop module is deprecated, and scheduled for removal in 2.4. I hadn't noticed this before, but I'd like to ask that it be kept. I've a number of pieces of code using it - both internal (our unified messaging server makes heavy use of it) and external (the shtoom python SIP phone uses it). Anthony

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Info regarding vigra
by Python-dev Jan. 18, 2004

Jan. 18, 2004

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