Mailman 3 March 2001 - Python-Dev

Who wants this GCC/Solaris bug report?
by Skip Montanaro 05 Mar '01

05 Mar '01

I was assigned the following bug report: http://sourceforge.net/tracker/?func=detail&aid=232787&group_id=5470&atid=1… I made a pass through the code in question, made one change to posixmodule.c that I thought appropriate (should squelch one warning) and some comments about the other warnings. I'm unable to actually test any changes since I don't run Solaris, so I don't feel comfortable doing anything more. Can someone else take this one over? In theory, my comments should help you zero in on a fix faster (famous last words). Skip

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XML runtime errors?
by Fredrik Lundh 05 Mar '01

05 Mar '01

stoopid question: why the heck is xmllib using "RuntimeError" to flag XML syntax errors? raise RuntimeError, 'Syntax error at line %d: %s' % (self.lineno, message) what's wrong with "SyntaxError"? </F>

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os module UserDict
by Jack Jansen 05 Mar '01

05 Mar '01

Importing os has started failing on the Mac since the riscos mods are in there, it tries to use UserDict without having imported it first. I think that the problem is that the whole _Environ stuff should be inside the else part of the try/except, but I'm not sure I fully understand what goes on. Could whoever did these mods have a look? Also, it seems that the whole if name != "riscos" is a bit of a hack... -- Jack Jansen | ++++ stop the execution of Mumia Abu-Jamal ++++ Jack.Jansen(a)oratrix.com | ++++ if you agree copy these lines to your sig ++++ www.oratrix.nl/~jack | ++++ see http://www.xs4all.nl/~tank/ ++++

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a small C style question
by Fredrik Lundh 03 Mar '01

03 Mar '01

DEC's OpenVMS compiler are a bit pickier than most other compilers. among other things, it correctly notices that the "code" variable in this statement is an unsigned variable: UNICODEDATA: if (code < 0 || code >= 65536) ........^ %CC-I-QUESTCOMPARE, In this statement, the unsigned expression "code" is being compared with a relational operator to a constant whose value is not greater than zero. This might not be what you intended. at line number 285 in file UNICODEDATA.C the easiest solution would of course be to remove the "code < 0" part, but code is a Py_UCS4 variable. what if someone some day changes Py_UCS4 to a 64-bit signed integer, for example? what's the preferred style? 1) leave it as is, and let OpenVMS folks live with the compiler complaint 2) get rid of "code < 0" and hope that nobody messes up the Py_UCS4 declaration 3) cast "code" to a known unsigned type, e.g: if ((unsigned int) code >= 65536) Cheers /F

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[development doc updates]
by fdrake＠cj42289-a.reston1.va.home.com 03 Mar '01

03 Mar '01

The development version of the documentation has been updated: http://python.sourceforge.net/devel-docs/ Additional information on using non-Microsoft compilers on Windows when using the Distutils, contributed by Rene Liebscher.

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Python 2.1b1 released
by Guido van Rossum 02 Mar '01

02 Mar '01

With great pleasure I announce the release of Python 2.1b1. This is a big step towards the release of Python 2.1; the final release is expected to take place in mid April. Find out all about 2.1b1, including docs and downloads (Windows installer and source tarball), at the 2.1 release page: http://www.python.org/2.1/ WHAT'S NEW? ----------- For the big picture, see Andrew Kuchling's What New in Python 2.1: http://www.amk.ca/python/2.1/ For more detailed release notes, see SourceForge: http://sourceforge.net/project/shownotes.php?release_id=25924 The big news since 2.1a2 was released a month ago: - Nested Scopes (PEP 227)[*] are now optional. They must be enabled by including the statement "from __future__ import nested_scopes" at the beginning of a module (PEP 236). Nested scopes will be a standard feature in Python 2.2. - Compile-time warnings are now generated for a number of conditions that will break or change in meaning when nested scopes are enabled. - The new tool *pydoc* displays module documentation, extracted from doc strings. It works in a text environment as well as in a GUI environment (where it cooperates with a web browser). On Windows, this is in the Start menu as "Module Docs". - Case-sensitive import. On systems with case-insensitive but case-preserving file systems, such as Windows (including Cygwin) and MacOS, import now continues to search the next directory on sys.path when a case mismatch is detected. See PEP 235 for the full scoop. - New platforms. Python 2.1 now fully supports MacOS X, Cygwin, and RISCOS. [*] For PEPs (Python Enhancement Proposals), see the PEP index: http://python.sourceforge.net/peps/ I hope to see you all next week at the Python9 conference in Long Beach, CA: http://www.python9.org --Guido van Rossum (home page: http://www.python.org/~guido/)

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Python 2.1 beta 1 documentation online
by Fred L. Drake, Jr. 02 Mar '01

02 Mar '01

The documentation for Python 2.1 beta 1 is now online: http://python.sourceforge.net/devel-docs/ This is the same as the documentation that will ship with the Windows installer. This is the online location of the development version of the documentation. As I make updates to the documentation, this will be updated periodically; the "front page" will indicate the date of the most recent update. -Fred -- Fred L. Drake, Jr. <fdrake at acm.org> PythonLabs at Digital Creations

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doc tree frozen for 2.1b1
by Fred L. Drake, Jr. 02 Mar '01

02 Mar '01

The documentation is frozen until the 2.1b1 annonucement goes out. I have a couple of checkins to make, but the formatted HTML for the Windows installer has already been cut & shipped. -Fred -- Fred L. Drake, Jr. <fdrake at acm.org> PythonLabs at Digital Creations

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Re: [Python-checkins] CVS: python/dist/src/Tools/scripts pydoc,NONE,1.1
by Michael Hudson 02 Mar '01

02 Mar '01

"A.M. Kuchling" <akuchling(a)users.sourceforge.net> writes: > --- NEW FILE: pydoc --- > #!/usr/bin/env python > Could I make a request that this gets munged to point to the python that's being installed at build time? I've just built from CVS, installed in /usr/local, and: $ pydoc -g Traceback (most recent call last): File "/usr/local/bin/pydoc", line 3, in ? import pydoc ImportError: No module named pydoc because the /usr/bin/env python thing hits the older python in /usr first. Don't bother if this is actually difficult. Cheers, M.

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python-dev summary, 2001-02-15 - 2001-03-01
by Michael Hudson 02 Mar '01

02 Mar '01

Thanks for all the positive feedback for the last summary! This is a summary of traffic on the python-dev mailing list between Feb 15 and Feb 28 (inclusive) 2001. It is intended to inform the wider Python community of ongoing developments. To comment, just post to python-list(a)python.org or comp.lang.python in the usual way. Give your posting a meaningful subject line, and if it's about a PEP, include the PEP number (e.g. Subject: PEP 201 - Lockstep iteration) All python-dev members are interested in seeing ideas discussed by the community, so don't hesitate to take a stance on a PEP if you have an opinion. This is the second python-dev summary written by Michael Hudson. Previous summaries were written by Andrew Kuchling and can be found at: <http://www.amk.ca/python/dev/> New summaries will appear at: <http://starship.python.net/crew/mwh/summaries/> and will continue to be archived at Andrew's site. Posting distribution (with apologies to mbm) Number of articles in summary: 400 | ]|[ | ]|[ 60 | ]|[ | ]|[ | ]|[ | ]|[ ]|[ | ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ 40 | ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ 20 | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ | ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ ]|[ 0 +-033-037-002-008-006-021-071-037-051-012-002-021-054-045 Thu 15| Sat 17| Mon 19| Wed 21| Fri 23| Sun 25| Tue 27| Fri 16 Sun 18 Tue 20 Thu 22 Sat 24 Mon 26 Wed 28 A slightly quieter week on python-dev. As you can see, most Python developers are too well-adjusted to post much on weekends. Or Mondays. There was a lot of traffic on the bugs, patches and checkins lists in preparation for the upcoming 2.1b1 release. * backwards incompatibility * Most of the posts in the large spike in the middle of the posting distribution were on the subject of backward compatibility. On of the unexpected (by those of us that hadn't thought too hard about it) consequences of nested scopes was that some code using the dreaded "from-module-import-*" code inside functions became ambiguous, and the plan was to ban such code in Python 2.1. This provoked a storm of protest from many quarters, including python-dev and comp.lang.python. If you really want to read all of this, start here: <http://mail.python.org/pipermail/python-dev/2001-February/013003.html> However, as you will know if you read comp.lang.python, PythonLabs took note, and in: <http://mail.python.org/pipermail/python-dev/2001-February/013125.html> Guido announced that the new nested scopes behaviour would be opt-in in 2.1, but code that will break in python 2.2 when nested scopes become the default will produce a warning in 2.1. To get the new behaviour in a module, one will need to put from __future__ import nested_scopes at the top of the module. It is possible this gimmick will be used to introduce further backwards compatible features in the future. * obmalloc * After some more discussion, including Neil Schemenauer pointing out that obmalloc might enable him to make the cycle GC faster, obmalloc was finally checked in. There's a second patch from Vladimir Marangoz implementing a memory profiler. (sorry for the long line) <http://sourceforge.net/tracker/index.php?func=detail&aid=401229&group_id=54…> Opinion was muted about this; as Neil summed up in: <http://mail.python.org/pipermail/python-dev/2001-February/013205.html> noone cares enough to put the time into it and review this patch. Sufficiently violently wielded opnions may swing the day... * pydoc * Ka-Ping Yee checked in his amazing pydoc. pydoc was described in <http://mail.python.org/pipermail/python-dev/2001-January/011538.html> It gives command line and web browser access to Python's documentation, and will be installed as a separate script in 2.1. * other stuff * It is believed that the case-sensitive import issues mentioned in the last summary have been sorted out, although it will be hard to be sure until the beta. The unit-test discussion petered out. Nothing has been checked in yet. The iteraators discussion seems to have disappeared. At least, your author can't find it! Cheers, M.

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