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

Circular references and python
by Jason Stokes Jan. 27, 2002

Jan. 27, 2002

Well, my adventures with the Python language are moving along. One thing that worries me is the lack of garbage collection in Python; the application I'm thinking of using Python for demands many data structures that use circular references, but Python only implements a reference counting scheme in the way of memory management. How do I use such data structures in Python?

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Is Stackless Python DEAD?
by python_only＠yahoo.com Jan. 15, 2002

Jan. 15, 2002

No update since 2001-05-14 ...

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Re: Update Oreilly books?
by DeepBlue Jan. 15, 2002

Jan. 15, 2002

Dan I truly got no idea why everyone seems willing to criticize Programming Python. It is an excellent book. If you have 2nd edition, you do not have to wait for another edition. One book simply will not do it. My plan is this: Have Programming Python, then get the latest Python Essential Reference by Beazley. Now, if you need anything specilaized (Python and XML or Python and the Web etc....) then get one. The opinion that one book should have all there is to be about a language is not only a myth but an insult to the language itself. There are many books to be published soon, Holden's Python web programming, another one on Python and XML etc...... My ture hope is that these forthcoming books will not reinvent the wheel by starting a multi-chapter introduction on how to use Python. DeepBleu <pythongeek(a)tradersdata.com> wrote in message news:mailman.1008555261.15036.python-list@python.org... > I am about to slowly transfer out of my newbie status, and I am going > to purchase a Programming Python Book (an upgrade from learning python) > and I wanted to know if anyone knows whether Oreilly will update the > book with the upcoming 2.2 release or if the 2nd edition will last till > 3.0 Python relase. > > Thank You > Dan > -- > John 11:25 "Jesus said to her, I am the resurrection and the life. He who > believes in me will live, even though he dies;" -- > http://www.tddm.org/salvation.shtml > > >

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Re: Python Popularity: Questions and Comments
by rcena＠epcor.ca Jan. 11, 2002

Jan. 11, 2002

The real source of growth for both Python and Ruby are the 3M VB developers worldwide. Whichever can provide what it is that VB developers like about VB on top of what Python and Ruby natively offer will hit the jackpot. To me these are: (a) Visual drag-and-drop application builder with data aware controls, and (b) good support for the big databases (Oracle, Sybase, Informix). I'm going through the gui chapters of Mark Lutz' PP2E, and while I can see that handcrafting gui this way gives me a lot of control, I'm thinking I don't want to do this -- I'm a database application developer. I want to write a dynamic work order system and I have no ambition to become a system tool maker. And so do the 3M VB developers. VB used to be a toy language. Not too long ago no respectable company would use VB for their corporate systems. It did not start to become an enterprise solution until VB3. What happened there? VB 6 will be retired in favor of VB.NET. Personally I think that the direction VB has taken, towards a verbose C#, is misguided. VB should have evolved into something like Python or Ruby. With VB.NET, VB programmers will ask, "What's the point?" Might as well dive into C#. Or look around for something else. Hopefully by that time -- 18 months from now? -- Python and/or Ruby will have what it is VB programmers cannot live without. Folks, come up with (a) and (b) above, then start posting at c.l.vb. Paul Prescod <paul(a)prescod.net> wrote in message news:<mailman.1009581813.21884.python-list(a)python.org>... > Dave Thomas wrote: > > > > ... Instead, Ruby will attract folks from outside the > > Python world. Ruby and Python differ in philosophy and _feel_. Some > > folks like one, some the other. I don't see it as competition. I see > > it as choice. > > Is there really a difference? Pepsi and Coke are choices. They are also > in competition. They have a somewhat different taste but are more > similar than different. In the long run, there will come a day when > they've taken as much of the market share of other drinks away as they > will, and the primary competition will be between the two of them. > > Paul Prescod

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REPOST: is this a bug or what?
by I.J. Jan. 11, 2002

Jan. 11, 2002

>>> M=[[0]*3]*3 >>> M [[0, 0, 0], [0, 0, 0], [0, 0, 0]] >>> M[1][1]=1 >>> M [[0, 1, 0], [0, 1, 0], [0, 1, 0]] Is this new age math?

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Platform-independent GUID creation?
by Steve Holden Jan. 11, 2002

Jan. 11, 2002

Does anyone have a readily-portable equivalent to the pythoncom.CreateGuid() function? regards Steve -- http://www.holdenweb.com/

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REPOST: mod_python and threads
by Achim Domma Jan. 10, 2002

Jan. 10, 2002

Hi, I'm playing around with mod_python and I like it, but I don't understand how it handles multiple threads. I think apache holds a pool of threads to handle request, so what happens if mod_python uses only one subinterpreter per virtual server ? Are request handled in a serial way or do I have to write threadsafe code ? could somebody enlighten my please ? greetings Achim ========= WAS CANCELLED BY =======: Path: news.sol.net!spool1-nwblwi.newsops.execpc.com!newsfeeds.sol.net!news-out.visi.com!hermes.visi.com!news.tele.dk!small.news.tele.dk!134.75.7.11!nntp.kreonet.re.kr!news-hub.kaist.ac.kr!feeder.kornet.net!news1.kornet.net!ua4canc3ll3r From: "Achim Domma" <achim.domma(a)syynx.de> Newsgroups: comp.lang.python Subject: cmsg cancel <a0i33d$vm2$05$1(a)news.t-online.com> Control: cancel <a0i33d$vm2$05$1(a)news.t-online.com> Date: Mon, 31 Dec 2001 02:33:07 GMT Organization: A poorly-installed InterNetNews site Lines: 2 Message-ID: <cancel.a0i33d$vm2$05$1(a)news.t-online.com> NNTP-Posting-Host: 211.57.49.2 X-Trace: news2.kornet.net 1009775020 27193 211.57.49.2 (31 Dec 2001 05:03:40 GMT) X-Complaints-To: usenet(a)news2.kornet.net NNTP-Posting-Date: Mon, 31 Dec 2001 05:03:40 +0000 (UTC) X-No-Archive: yes X-Unac4ncel: yes X-Commentary: I love NewsAgent 1.10 and the Sandblaster Cancel Engine Build 74 (19 March 1999) This message was cancelled from within Mozilla.

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Re: install Python2.2 question
by Tim Hammerquist Jan. 8, 2002

Jan. 8, 2002

<zhangsc(a)neusoft.com> graced us by uttering: > My computer operation system is Red Hat Linux7.0, > I install python2.2,it raise a error,How to correct? > it follows: > > [root@storm /root]# rpm -i python2-2.2-2.i386.rpm > error: failed dependencies: > libcrypto.so.2 is needed by python2-2.2-2 > libdb-3.2.so is needed by python2-2.2-2 > libexpat.so.0 is needed by python2-2.2-2 > libreadline.so.4 is needed by python2-2.2-2 > libssl.so.2 is needed by python2-2.2-2 v2.2 is the most recent release of Python and was probably built using libraries that didn't come on your distribution CDs. The rpm you're trying to install requires the listed rpms in order to function. You can try to search for them at one of the http://rpmfind.net/ mirrors. If you have a sufficient devel environment and you are up to the challenge, you can try to build Python yourself, but it may be more trouble than it's worth if you're new to linux. HTH Tim Hammerquist -- Little one, I would like to see anyone -- prophet, king or god -- persuade a thousand cats to do anything at the same time. -- Orange Cat, The Sandman

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threading.py -> winthreading.c : Some results
by Jason Orendorff Jan. 7, 2002

Jan. 7, 2002

I've reimplemented the synchronization objects of threading.py in non-portable, Win32-only C. The C versions of RLock, Event, Semaphore, and Condition perform at least 5x faster than their standard counterparts in threading.py in every situation I've tried. Acquiring an RLock runs 25x faster. Condition.wait(timeout) runs 500x faster. This benchmark: http://www.bagley.org/~doug/shootout/bench/prodcons/prodcons.python runs 6.3 times as fast under the C version of Condition. That's fast enough to post a reasonably non-humiliating benchmark number; it closes the gap between Python and Java considerably. ...If you care about such things. ...As of course no sane person does. Whether this C code would mean a significant performance increase in a real-life program remains to be proven. Comments? ## Jason Orendorff http://www.jorendorff.com/

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reading 6-byte ("real48") Borland Pascal Floating Point numbers
by m.bless＠gmx.de Jan. 7, 2002

Jan. 7, 2002

I have to convert those "good (?) old" 6-byte, "real48" floating point numbers used in Borland's Pascal to nowadays "normal" floating points. Has is already been done? Martin

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