🌐 Mailman 3 December 2001 - Python-list - python.org

Re: Properties fun with 2.2
by Martin von Loewis Dec. 31, 2001

Dec. 31, 2001

"Mike C. Fletcher" <mcfletch(a)rogers.com> writes: > The "only defined properties" thing can be done with a __slots__ > definition in the object, but then there's no __dict__ in which to store > the data (there must be some way to say "store in the slot", I just > don't see it right now). Delegating to a different attribute might be appropriate: class X(object): __slots__ = ['_a'] def set_a(self, val): self._a = val def get_a(self): return self._a a = property(get_a, set_a) Regards, Martin

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Re: REPOST: Re: wxBitmapFromImage function in wxPython?
by Stephane SOPPERA Dec. 31, 2001

Dec. 31, 2001

> Python 2.1.1 (#1, Aug 28 2001, 19:51:39) > [GCC 2.96 20000731 (Red Hat Linux 7.1 2.96-85)] on linux2 > Type "copyright", "credits" or "license" for more information. > >>> from wxPython.wx import * > >>> wxBitmapFromImage > <function wxBitmapFromImage at 0x83cd504> > >>> > > Perhaps there is something amiss with your wxPython installation? > Thanks for your answer. Yes that's it. I'v only the version 2.2.7, not the last one. -- Stephane SOPPERA http://stephane.soppera.free.fr

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rtf reader\writer
by peevee78 Dec. 31, 2001

Dec. 31, 2001

Hi I was wondering if there is a python module for reading and writing rtf files. I am currently planning a project that would generate an rtf file from text entered in a GUI. Thanks. peevee78.

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Re: Basic threading questions
by John Lull Dec. 31, 2001

Dec. 31, 2001

"Jason Orendorff" <jason(a)jorendorff.com> wrote (with possible deletions): > No. Most block nicely. If you find one that doesn't, > it's (almost certainly) a bug. So the note in the thread module documentation is pretty much obsolete? > This page starts with a very technical discussion: > http://www.python.org/doc/current/api/threads.html This was pretty clear. For my needs, then, it appears that the thread safety of various operations boils down to whether they are effectively atomic (i.e. atomic so far as other threads running under the same copy of the Python interpreter are concerned). I would assume that all built-in functions, and all methods of all built-in types, are implemented as C functions rather than compiling to sequences of interpreter byte-codes. They should therefore be effectively atomic if they don't use blocking system services. Is that a good assumption? Which built-in operations are blocking should be pretty obvious from either the documentation or the basic nature of the operation. Are there any non-obvious blocking built-in operations? Thanks *very* much for your swift response to my earlier query. Regards, John

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Re: Two languages, too similar, competing in the same space.
by Michael Kelly Dec. 31, 2001

Dec. 31, 2001

On Mon, 31 Dec 2001 08:47:15 -0800, "Bruce Eckel" <Bruce(a)EckelObjects.com> wrote: >Learning Perl, for example, is >what lead me to Python. Likewise playing around with Ruby makes me wonder if I should attempt SmallTalk again. :) Mike -- "I don't want to belong to any club that would have me as a member." -- Groucho Marx

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How to do "ANN:"?
by Harry George Dec. 31, 2001

Dec. 31, 2001

A couple of times I've tried to annouce package upgrades using "ANN:" entries to c.l.p and c.l.p.a, but nothing shows up. Is there a magic decoder ring? Most recently, updates for mkpythonproj, pdx, and pyperlish. -- Harry George hgg9140(a)seanet.com

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Re: Search the difference: Why this function defenition does'nt work?
by husam Dec. 31, 2001

Dec. 31, 2001

Roman Suzi wrote: > On Sun, 23 Dec 2001, husam wrote: > > >>But when I adjust the code to this: >> >>sum=['c'] >> >>it still does not work, despite the fact that sum is not an undefined >>object, right? >> > > Probably this is what is slightly more compact approach to your > problem of making sum of numbers: > > >>>>f = lambda *args: reduce(lambda x, y: x+y, args, 0) >>>>f(1,2,3) >>>> > 6 > > As for slices vs. indices, it is clear that > > a[0] is not a[:0] > > because a[0] is an element and a[:0] is a subsequence. > > I am not sure why do you need to change fun2, but > this is what will work: > > def fun2 (*args): > sum = args and args[0] or 0 > for next in args[1:]: > sum = sum + next > return sum > > In any case, it is impossible to make universal summing function without > specifying the zero-len case. > > > Sincerely yours, Roman Suzi > I'm not trying to add string to a list of integeres. What I wanted to do is to add each argument of func2('a','b','c') to sum=['e']. Since sum is a list of chars, and the arguments are accessable as a sequence, one would expect that the addition operation would be correct. On the interactive shell, it is a trivial operation. But, only when i use it in the function defenition i get problems. Adding 'a' to ['b'] does not work, but adding list('a') to ['b'] it does, so, i thought that this might help my code, but converting the args to a list did not helpe either . I really didn't get yet!

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Re: Python Popularity: Questions and Comments
by Ron Stephens Dec. 31, 2001

Dec. 31, 2001

I just think that it is difficult for for-profit corporations to justify hiring and keeping highly paid developers to work on Python development. Granted Python was originally and primarily developed by open source volunteers, as are most such languages. But it is sure nice having the support of Digital Creations, ActiveState, etc. I am not "knocking" ActiveState, really I can understand their dilemna. How do they generate enough revenues with a Python development team to pay for itself and make a profit? Not easy, I fear; and the economy, which is definitely slowing, sure doesn't help. I hope Digital Creations can make money on Zope, the more the better. I urge us all to support Zope in any way we can (and for that matter, to support any ActiveState Python products we can, and Secret Labs, PythonWare, etc. etc. etc. Python will do better if it has commercial support, in addition to open source volunteers. Of course we need the open source community; without Guido and the rest of the community, there would be no Python. But enthusiastically support any commercial enterprise that supports Python, I say. I especially hope that Zope can be a big money maker for Digital Creations. But I suspect that it is a tough business model they have. I think we should be grateful to them for supporting Python so vigorously and in such important ways. I recently read an interview with a Digital Creations top manager where he said that he hopes someone starts a successful business based solely on providing ISP services using Zope, with full technical support. Is anyone looking into this? Does anyone think this could be a successful business model? I am interested in opinions on this. Ron Stephens http://www.awaretek.com/plf.html Justin Sheehy wrote: > Ron Stephens <rdsteph(a)earthlink.net> writes: > > > Furthermore, Ruby is aimed right at the heart of Python's niche. > > What niche is that? > > More importantly, why does this matter? The "aimed right at the heart" > phrasing makes it sounds as though one must defeat and replace another. > > There's no reason why Ruby can't do just fine without this meaning > anything negative about Python. > > > If we view Microsoft's Visual Studio, especially Visual Studio.net's C# > > and VB, as the official 800 lb. gorilla of software development; and if > > we view Java as the 400 lb. gorilla pretender to the throne; and if we > > view Borland's Delphi and Kylix as no more than a smart leader of a > > chimp; then everything else is the pack of open source chimps. > > Oh, you live in a windows-only world. > > Those are definitely all big players, but a lot of large and > significant software happens in environments where VB et al are simply > not viable options due to the fact that they tie you so tightly to one > vendor's platform. > > Python runs in more places than any of the products/languages that you > mention, and this matters a lot to a large number of people. > > > Ruby folks include those who like its more Perl-like syntax > > They can keep it. I love not having line noise mixed in with my programs. > > > They see Python as a compromise between object oriented and > > procedural programming. > > So? Idealists are fun to talk to, but compromises get work done just fine. > > > What so you all think of Ruby, and its impact on Python? > > Ruby - seems decent enough, but I have no reason to use it other than > playing around and because I like seeing how new and different > language implementations work > > Ruby's impact on Python - Not much. For a while the biggest impact > was that a few people would yell about Ruby's superiority at > inappropriate times in various non-Ruby-related forums. That > seems to have died off, and now Ruby seems to be doing just > fine for a young language. This doesn't really mean all that > much to Python, as it is extremely unlikely that either of > these two languages will fully supplant the other. > > > 2. The economy is hurting Python's open source development model. > > It is? From my observations, Python itself has seen far more > aggressive development in the past year or so than in any of the > previous several years. Other than the one comment about Mark > Hammond's situation, what makes you say this? > > -Justin > >

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Obtaining the IDLE GUI under Red Hat Linux 7.2
by Ahimsa Dec. 31, 2001

Dec. 31, 2001

Greetings and compliments of the season to y'all Quick question. I understand that there is a way of obtaining a GUI for Python 2.2. If so, what would be the way to get this under Linux Red Hat 7.2? Anyone got any experience with this? Thanks Andrew

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mySQL
by Preben Dec. 31, 2001

Dec. 31, 2001

Is there any built-in modules for connecting databases such as mySQL? Or do I have to make them myself?

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