Mailman 3 November 2002 - Python-Dev

Snake farm
by Neal Norwitz Nov. 11, 2002

Nov. 11, 2002

As some of you may have noticed, I recently checked in a bunch of fixes that deal with portability. I have been granted access to the snake farm, which allows me to test python on different architectures. The snake farm architectures include: HPUX 11 AIX 4.2 & 4.3 Linux 2.4 & 2.2/Alpha Solaris 8 SunOS 4.1.1 I am mostly testing 2.3, but can test 2.2 as well. Right now, there is no easy way to tell if a bug on SF is specific to a particular OS/… [View More]

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bdb.py change from 1.31 to 1.31.2.1
by Gerson.Kurz＠t-online.de Nov. 11, 2002

Nov. 11, 2002

I have a problem with the current version of Pythonwin that I think I have tracked down to a change in bdb.py change 1.31 to 1.31.2.1, which dates 2002/05/29. Before you moan: "Pythonwin <> Python", please read on. * PROBLEM DESCRIPTION * In old versions of Pythonwin, pressing F5 = Debugger\Go when a source is active results in the code getting executed normally. Only when the debugger hits a breakpoint, (or an exception), the debugger is actually entered. In the current version of … [View More]Pythonwin (that is, "PythonWin 2.2.2 (#37, Oct 14 2002, 17:02:34) [MSC 32 bit (Intel)] on win32." using win32all build 150), pressing F5 = Debugger\Go will stop on the first line. Actually, it is worse, because the current version doesn't break on the first line of code, but somewhere inside pywin.debugger.debugger.Debugger. There was a thread about this recently on clp, and Mark Hammond proposed a fix (see <news:P4jw9.22603$jE1.72999@news-server.bigpond.net.au>) which takes on this bit - but doesn't change the "Go = break at first line of code" behaviour. * BUT IS IT REALLY A PROBLEM * I think so, because a) it is a (for me unexpected) change in behaviour from Pythonwin versions, b) it is redundant - because you can always use "Debugger\Step in" to step into the source using the first line if you really want to c) I know, people will stare at me madly for saying this, but in other Debuggers I've worked with, "Debugger\Go" does not mean "Debugger\Go but only after another Go after the first line", but, rather, "Debugger\Go", as one would think the name indicates. * WORKAROUND * After lots of debugging I narrowed the problem down to bdb.py, and further to dispatch_call(). It seems that in the old version, the code read # First call of dispatch since reset() self.botframe = frame and was changed to # First call of dispatch since reset() # (CT) Note that this may also be None! self.botframe = frame.f_back When I revert the change (i.e. use "frame" rather than "frame.f_back") there is no initial callback, and everything works fine. I'm not quite clear just as to *why* it works, but it *does* work. FYI: The code actually breaks later in stop_here(), which was *also* changed as part of that particular checkin. * QUESTION * Actually, two questions 1) Can somebody explain that change to me? What was it intended to solve? (I don't know what the suffix "CT" stands for - there is no username to that effect in the python sourceforge page that I could find.) 2) Is it a bug or a feature (i.e. a pythonwin bug rather than a bdb.py bug) or not-a-bug-at-all ? [View Less]

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Reindenting unicodedata.c
by martin＠v.loewis.de Nov. 11, 2002

Nov. 11, 2002

While working on unicodedata.c, I found that its indentation does not follow PEP 7. Is it ok to reindent it (i.e. use tabs)? Regards, Martin

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[PATCH] compile fixes for FreeBSD 5 (-current)
by Marc Recht Nov. 10, 2002

Nov. 10, 2002

Hi! I've made some patches against the current CVS version to get it build on FreeBSD 5-current. If build with "--without-pymalloc" it passes all tests except "test_re" (Bus error). With "--with-pymalloc" the install core-dumps. Regards, Marc -- "Premature optimization is the root of all evil." -- Donald E. Knuth

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Weekly Python Bug/Patch Summary
by Skip Montanaro Nov. 10, 2002

Nov. 10, 2002

Bug/Patch Summary ----------------- 310 open / 3027 total bugs (-12) 99 open / 1768 total patches (no change) New Bugs -------- list slice ass ignores subtypes of list (2002-11-04) http://python.org/sf/633152 cgi.py drops commandline arguments (2002-11-04) http://python.org/sf/633504 HeaderParseError: no header value (2002-11-04) http://python.org/sf/633550 Nested class __name__ (2002-11-05) http://python.org/sf/633930 pdb quit breakage (2002-11-05) http://python.org/sf/634116 RFC … [View More]

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Pickling Question
by Patrick K. O'Brien Nov. 9, 2002

Nov. 9, 2002

In my pickling article [1] I looked at various ways to handle schema evolution issues. When it came to module name and location changes, I wrote the following: "A module name or location change is conceptually similar to a class name change but must be handled quite differently. That's because the module information is stored in the pickle but is not an attribute that can be modified through the standard pickle interface. In fact, the only way to change the module information is to … [View More]

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Restricted interpreter
by Gustavo Niemeyer Nov. 9, 2002

Nov. 9, 2002

This weekend I'm going to work on a "restricted" python interpreter for http://acm.uva.es/problemset/. That site offers online programming contests, including an online judge to check algorithm implementations for hundreds of problems. I belive it'd be nice for the Python community to have access to something like that. This interpreter should have limited functionality so that malicious users won't be able to access the filesystem, sockets, and other "dangerous" functionality. I'm not sure … [View More]

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RE: [Python-Dev] ConfigParser with a single section
by Detlef Lannert Nov. 8, 2002

Nov. 8, 2002

[Gustavo Niemeyer] > Patch #549037 implements an interesting feature: it allows one to have > configuration files without headers. I'd like to know what's your > opinion about this issue, so that we can either forget the issue or > implement the functionality, closing that bug. [Tim Peters] > -0. Complicates the code and the docs and the mental model to save what, 3 > measly characters of typing (e.g., "[x]")? It also saves me to explain to the users of my program why they … [View More]

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ConfigParser with a single section
by Gustavo Niemeyer Nov. 8, 2002

Nov. 8, 2002

Patch #549037 implements an interesting feature: it allows one to have configuration files without headers. I'd like to know what's your opinion about this issue, so that we can either forget the issue or implement the functionality, closing that bug. A few comments about the issue: I would use a different implementation than the one provided in the patch. The patch includes a new parameter in read functions, stating what's the first section name. It means that we could have other sections … [View More]

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Re: [Python-Dev] [SourceForge] Notice of scheduled outages
by Michael Hudson Nov. 8, 2002

Nov. 8, 2002

Neal Norwitz <neal(a)metaslash.com> writes: > FYI, I received the info below from SourceForge. Which SA scored for me as spam... gotta-install-spambayes-ly y'rs M. -- Those who have deviant punctuation desires should take care of their own perverted needs. -- Erik Naggum, comp.lang.lisp

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