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

Opening a file in shared mode
by Laurent Pointal Dec. 1, 2001

Dec. 1, 2001

The question is in the title... Working on a log system, no problem to open a file and write in. But I would like to be able to open that file for reading in other processes (ex. do a tail -f on the file, or open it with an editor). I tried low level access via os module, but no option to specify a shared mode. With newsgroup search, I found posts about lock files implementation for shared resources among several process, but no opening mode for shared file. If anybody have a solution... thanks. Platform: Win2K Python: 2.1 A+ Laurent.

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PLplot with Python 2.1?
by gb＠cs.unc.edu Dec. 1, 2001

Dec. 1, 2001

PLplot includes support for Python 1.5. Has anyone ported it to 2.1? It *may* just require changing a few directory names but since it links to NumPy as well I could imagine it requiring some changes to the code. Thanks gb

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Using Python with a webserver
by Sam Scholey Dec. 1, 2001

Dec. 1, 2001

Hey Folks I was interested in the prospect of using python with my webserver but a search on the python site and on deja produced virtually zero results. Can it be done? is it as easy as editing a few lines of code in the apache httpd.conf file? I am using Windows xp pro, apache 1.3.22 (for windows) Thanks Very Much

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embedded exe (was Re: Unable to deliver your message)
by Kragen Sitaker Dec. 1, 2001

Dec. 1, 2001

anurag uniyal <anuraguniyal(a)yahoo.com> writes: > I am creating a python application which > runs embedded in some other software ,this software > has some built-in modules which I am using in my > pyhton application. > Now I wan't to convert my python application to exe. > I have done that using Py2Exe. Is it possible to run > this exe as embedded in other software. What does "embedded in" mean? Linked into? Displaying in the same window as?

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Mass mailing module for Python
by Max M Dec. 1, 2001

Dec. 1, 2001

I have been whip up a mass mailing system for one of our customers, that needs to adress about 25-40.000 of their cosumers by email regularly. The mails will all be different with personalized content. So i guess that a regular list manager like mailman is out of the question. Without having tried it I guess that using a regular mailserver and then just sending tons of mails from that, one at a time, wont work either. Though it would be very easy. Here I am thinking about bouncing mail and unavailable mailservers, but I could be wrong. Doest anybody have an idea as to how I should approach this in Python? Has anybody tried it? I know that I could write a test, but the problem is that it's pretty hard to realistically test sending 25000 emails out in the wild. So in this case my hope is that somebody else has made the mistakes before me. regards Max M

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internet/form-handling
by telianews Dec. 1, 2001

Dec. 1, 2001

Hi, here's the question : How can I write a program that will let me log on to password-protected websites from a text-terminal (e.g. xterm). Just to illustrate what I mean, right now I have to log on to my ISP server from a javascript-enabled webclient, but I would really like to be able to check my POP-mail without first starting a webbrowser. Any ideas for a script to log on from the terminal? Patrik

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Re: A modest indentation proposal
by gat＠jpl.nasa.gov Dec. 1, 2001

Dec. 1, 2001

In article <mailman.1007142894.896.python-list(a)python.org>, <brueckd(a)tbye.com> wrote: > Do you think this indentation stuff will have any bearing at all on any > of this? Erann, there are much bigger fish to fry. I apologize, but this > is really a nit-pick issue. Surely the people you're trying to sell this > to can come up with better reasons as to why Python is not suitable. I > mean, if they are complaining about this then I am *really* curious about > what languages they *do* find acceptable. I guarantee that, given any > language (including Python!), we can come up with more serious and > reasonable objections than this one. Yes, of course it's a nit-pick issue. These arguments are not entirely rational (though I actually do believe this argument has some merit, not that that matters). These things have as much to do with fashion and ass-covering than with technical arguments. What languages do "they" find acceptable? C++. Java is starting to make some inroads, but it's still a hard sell. > Congratulations on getting them this far (I'm serious). You've obviously > done a lot of selling to them to get them to the point that these are the > types of objections they're raising. Thanks. > The thing to do now is to convince > them to let you use Python on a minor project or two so that they can > *objectively* judge the merits of Python. You need to help them get out of > the respond-to-whatever-problems-we-can-dream-up mode and into the > see-what-problems-really-occur-and-how-often mode, and then you can > accurately judge the suitability of Python. Yes, that will help, but not nearly as much as being able to come up with a technically sounds response to this objection. I got NASA to fly Common Lisp, so I've had some experience selling these people on unusual languges. Please believe me, I've been here before. > Yes, in theory, their > objection can cause problems. In practice, however, it rarely does. Rarely isn't good enough. The annals of catastrophic failures are chock-full of multi-million-dollar failures that were the result of things that "rarely" caused problems. This argument works only for the currently popular thing, not for the underdog, and at the moment Python is still the underdog. (In fact, the main reason I've gotten as far as I have is that very few people around here know Python, so they've got relatively open minds about it.) It's not fair, it's not rational, but that's the way it is. > Right now you're essentially in the tough position of showing that Python > is perfect, which it's not, so you're bound to lose the argument. You misjudge the situation. I like Python a lot, but I don't really have what you would call a passion for it. (My passions run in other directions.) What's happening here is that I see an opportunity for Python potentially expanding into a cool new market, but meeting resistance. I see a way to overcome that resistance while at the same time IMO improving the language with minimal impact on existing infrastructure. But I am not engaged in any argument with anyone, so I'm not "bound to lose." All I'm doing is bringing a problem and a suggestion for a solution to your attention for your consideration. E.

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Re: Whatever happened to String Interpolation?
by Fernando Pérez Dec. 1, 2001

Dec. 1, 2001

Skip Montanaro wrote: > > fp> I'm a big fan of Ka-Ping Yee's Itpl module (which allows > strings of fp> the form 'the value of x is $x', but I often find > myself not using fp> it so as not to add an extra dependency to > a program I want to keep fp> small. > > I know it's a little more verbose, but what's wrong with > > 'the value of x is %(x)s' % locals() > > (or something similar? As has been demonstrated recently on the > list, you can easily create a dict-like object that allows you to > interpolate complex expressions as well. > Too much to type and visually parse, for one. I've seen the neat tricks to evaluate more complex things, but they're not standard nor obvious (so I bet you 95% of people just create temps with what they need right before the evaluation). A more serious one: dynamic code generation. Just today I had to jump through some annoying hoops (like defining x="'%s'" and y='%' and use those in a string) to generate code that would include % characters but which would first have to be parsed by a %. I know this isn't exactly common, though. I am a big defender of not extending things unless truly needed, and with time I've learned to do things the 'python way', without saying at every corner 'but language_x has this feature!'. But string handling is the one that *constantly* feels kludgy in an otherwise stunningly clean and elegant language. I felt that pep215 had a clean argument, the extension is very orthogonal to the existing features, and can make a lot of code simply a lot cleaner. I feel those are strong arguments. Well, I can keep dreaming... Cheers, f

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Re: Scientific Libraries in Python
by prabhu＠cyberwaveindia.com Dec. 1, 2001

Dec. 1, 2001

Horatio Davis <horatio(a)qpsf.edu.au> wrote in message news:<mailman.1006691016.32620.python-list(a)python.org>... [snip] > VTK (Martin et al) - 3D visualization on GTK - personal copyright Well, I guess that is a typo but FWIW I'd like to mention that VTK does not depend on GTK and does not use it at all. There is a pyGTK widget that can embed a VTK render window but that is a different issue. Thanks for the compliments on MayaVi. :) [snip] > Now... licensing. While the top two projects are both less...restrictive, > I reluctantly have to concede that these lists have an awful lot of GPL > code that would be difficult or impossible to do without. The eventual > license, therefore, looks like GPL or (if we're lucky) LGPL. I can even > live with that if it'll get me a coherent scientific library, but others > might have a different viewpoint. What would those viewpoints be? As regards the MayaVi license, MayaVi was developed for the community so I didn't want someone to take the MayaVi codebase, use it for their own purposes and not give back anything in terms of code to the community. That is why I chose the GPL. However, the GPL does force everyone else who links to it to be GPL. I guess LGPL might also work but I really don't know. I'll try to give it some thought. Anyway, I am not sure you want to put all packages into one huge super package. It would be a nightmare to package/distribute! I'd really pity the person who'd have to maintain such a beast. prabhu p.s. Please dont cc me in on replies. My ISP has proved to be incredibly incompetent and has not fixed a stupid DNS problem for the last 5 days!! *Sigh*.

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questions about of writing python scripts
by edwardt＠trillium.com Dec. 1, 2001

Dec. 1, 2001

I am writing a program in python, but I find that in using the python interpreter in writing program I am not able to find errors in the erliaest stage. I need to run the program a lot of timee just to find out errors like: simple syntas errors that are embedded in the functions that I called in other modules.... Is there a way to force the python interpretter to kind of doing "compilation" of the python scripts, so that I do not need to rerunning the progrma a lot of times just to find out they are errors like varibles not defined; functions name not found, variables not found?

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