Re: Python for web...
Hi All-- I didn't have any trouble setting up mod_python Django. However, I am my own hosting provider. That may make a difference. ;-) I can install fastcgi if it's a big win. Metta, Ivan On Mon, Feb 25, 2008 at 6:48 AM, Berco Beute [EMAIL PROTECTED] wrote: Use mod_python if you can. Although mod_python is fine, I had more success using fastcgi with Django (you can run Django as a fastcgi process). It was less troublesome to set up and the chances your hosting provider supports it are bigger. 2B -- http://mail.python.org/mailman/listinfo/python-list -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python for web...
Hi All-- Django is slick. I just yesterday picked up the book and started poking away. Downloaded, Installed and running in about ten minutes (I have several servers I can play with). Today I have several working pages. Use mod_python if you can. Django-mind-Beginner's-mind-ly y'rs, Ivan On Sun, Feb 24, 2008 at 12:03 PM, Tamer Higazi [EMAIL PROTECTED] wrote: http://www.djangobook.com/ if you love to read that book online. Otherwise, if you don't have DSL, just mirror the site for offline usage with wget Tamer [EMAIL PROTECTED] wrote: Hi everyone, I have to develop a web based enterprise application for my final year project. Since i am interested in open source, i searched the net. Almost 90% of them were PHP and MySQL. Cant we use python for that ? I tried several sites, but there is not enough tutorial for beginners [mod_python, PSP etc]. I couldnt find any detailed book, not even a single book :( All the python books are covering only CGI part) Any suggestions? Any recommended book? Execuse my English. Thushanthan. -- http://mail.python.org/mailman/listinfo/python-list -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Solve a Debate
Hi All-- Lookup tables are always significantly faster than a bunch of ifs. Metta, Ivan On Fri, Feb 15, 2008 at 10:10 AM, Tim Chase [EMAIL PROTECTED] wrote: Ok the problem we had been asked a while back, to do a programming exercise (in college) That would tell you how many days there are in a month given a specific month. Ok I did my like this (just pseudo): If month = 1 or 3 or etc noDays = 31 Elseif month = 4 or 6 etc noDays = 30 Else noDays = 29 (we didn't have to take into account a leap year) He declared an array and assigned the number of days in a month to its own element in an array. Now I realise that in this example it would not make a difference in terms of efficiency, but it is my belief that if there is more data that needed to be assigned(i.e. a couple megs of data) it would be simpler (and more efficient) to do a compare rather then assigning all that data to an array, since you are only going to be using 1 value and the rest of the data in the array is useless. What are everyone else's thoughts on this? Well, the standard library offers its opinion: import calendar calendar.mdays [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31] month = 2 calendar.mdays[month] 28 If you want the actual number of days, taking leap-years into consideration calendar.monthrange(2008,2)[1] 29 calendar.monthrange(2007,2)[1] 28 So the answer is mu...let Python do the work for you :) -tkc -- http://mail.python.org/mailman/listinfo/python-list -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Why not a Python compiler?
Gary Kurtz at SunCon 77 explained that it was a test to see if Obi-Wan knew what he was doing; supposedly, Obi-Wan's expression indicated that he knew Solo was feeding him shit. I think Lucas didn't have a clue, myself; it's not credible that citizens of a starfaring civilization who deliberately set out to hire a starship wouldn't know the difference between time and distance. Occam's razor says Lucas screwed up and doesn't want to admit it. Metta, Ivan On Feb 7, 2008 1:05 PM, Grant Edwards [EMAIL PROTECTED] wrote: On 2008-02-06, Gary Duzan [EMAIL PROTECTED] wrote: In article [EMAIL PROTECTED], Grant Edwards [EMAIL PROTECTED] wrote: On 2008-02-06, Reedick, Andrew [EMAIL PROTECTED] wrote: One demerit has been marked against your geek card for missing an obvious science pun. Additionally, your membership to the Star Trek Lifestyle Adventure Club has been put on probationary status for the next twelve parsecs. Ouch. Two demerits for using the distance unit parsec in a context where a quantity of time was required. No demerits for Andrew; it is a Star Wars reference, which is quite on topic for this subthread. http://starwars.wikia.com/wiki/Kessel_Run Silly me. I wonder if George Lucas intended it as a joke or if he thought a parsec was a unit of time. -- Grant Edwards grante Yow! Clear the laundromat!! at This whirl-o-matic just had visi.coma nuclear meltdown!! -- http://mail.python.org/mailman/listinfo/python-list -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with Tkinter scrollbar callback
HI All--
We've decided that this represents a bug in the tcl/tk library, and
there's no workaround. I switched to + and - buttons, which are not
as nice aesthetically but work correctly on both Windows Linux.
Thanks to everyone for their help.
Metta,
Ivan
On Jan 29, 2008 11:03 AM, Ivan Van Laningham [EMAIL PROTECTED] wrote:
No Joy.
Waits the 1 second, then clicks the button once per second until the
limit's reached.
Sigh.
Metta,
Ivan
On Jan 29, 2008 10:20 AM, Russell E Owen [EMAIL PROTECTED] wrote:
Nope:
'repeatdelay': ('repeatdelay', 'repeatDelay', 'RepeatDelay', '300', '300'),
And even after I set it, it looks funny:
'repeatdelay': ('repeatdelay', 'repeatDelay', 'RepeatDelay', '300',
'1000'),
And when I try it with the new repeatdelay (1000), the only thing that
has changed is that it waits 1000 milliseconds before exhibiting the
same uncontrolled growth as before.
You need to change repeatinterval, not repeatdelay.
As to looking funny: that is the standard output format for
configure(). I think can get a more reasonable value using
cget(repeatdelay).
-- Russell
Metta,
Ivan
On Jan 25, 2008 5:49 PM, Russell E. Owen [EMAIL PROTECTED] wrote:
In article [EMAIL PROTECTED],
Ivan Van Laningham [EMAIL PROTECTED] wrote:
Hi All--
That helps. Doing a get() on the scrollbar before a set(0.0,0.0)
returns a 4-tuple: (0.0, 0.0, 0.0, 0.0) ! I did the set(0.0,0.0)
and now the callback gets the correct number of arguments.
However, I'm still getting the weird behaviour when clicking the
arrowheads--and the heads are all I want. They act like they've been
set to a keybounce timeout of about a millisecond. ... The arrow
click increments the number of cells in a table row (effectively), and
it shoots up from 5 to 26 columns almost instantly (that's the
internal max I set).
Is the scroll bar's repeatinterval set to a reasonable value?
-- Russell
--
http://mail.python.org/mailman/listinfo/python-list
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: Problem with Tkinter scrollbar callback
Nope:
'repeatdelay': ('repeatdelay', 'repeatDelay', 'RepeatDelay', '300', '300'),
And even after I set it, it looks funny:
'repeatdelay': ('repeatdelay', 'repeatDelay', 'RepeatDelay', '300', '1000'),
And when I try it with the new repeatdelay (1000), the only thing that
has changed is that it waits 1000 milliseconds before exhibiting the
same uncontrolled growth as before.
Metta,
Ivan
On Jan 25, 2008 5:49 PM, Russell E. Owen [EMAIL PROTECTED] wrote:
In article [EMAIL PROTECTED],
Ivan Van Laningham [EMAIL PROTECTED] wrote:
Hi All--
That helps. Doing a get() on the scrollbar before a set(0.0,0.0)
returns a 4-tuple: (0.0, 0.0, 0.0, 0.0) ! I did the set(0.0,0.0)
and now the callback gets the correct number of arguments.
However, I'm still getting the weird behaviour when clicking the
arrowheads--and the heads are all I want. They act like they've been
set to a keybounce timeout of about a millisecond. ... The arrow
click increments the number of cells in a table row (effectively), and
it shoots up from 5 to 26 columns almost instantly (that's the
internal max I set).
Is the scroll bar's repeatinterval set to a reasonable value?
-- Russell
--
http://mail.python.org/mailman/listinfo/python-list
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: Problem with Tkinter scrollbar callback
No Joy.
Waits the 1 second, then clicks the button once per second until the
limit's reached.
Sigh.
Metta,
Ivan
On Jan 29, 2008 10:20 AM, Russell E Owen [EMAIL PROTECTED] wrote:
Nope:
'repeatdelay': ('repeatdelay', 'repeatDelay', 'RepeatDelay', '300', '300'),
And even after I set it, it looks funny:
'repeatdelay': ('repeatdelay', 'repeatDelay', 'RepeatDelay', '300', '1000'),
And when I try it with the new repeatdelay (1000), the only thing that
has changed is that it waits 1000 milliseconds before exhibiting the
same uncontrolled growth as before.
You need to change repeatinterval, not repeatdelay.
As to looking funny: that is the standard output format for
configure(). I think can get a more reasonable value using
cget(repeatdelay).
-- Russell
Metta,
Ivan
On Jan 25, 2008 5:49 PM, Russell E. Owen [EMAIL PROTECTED] wrote:
In article [EMAIL PROTECTED],
Ivan Van Laningham [EMAIL PROTECTED] wrote:
Hi All--
That helps. Doing a get() on the scrollbar before a set(0.0,0.0)
returns a 4-tuple: (0.0, 0.0, 0.0, 0.0) ! I did the set(0.0,0.0)
and now the callback gets the correct number of arguments.
However, I'm still getting the weird behaviour when clicking the
arrowheads--and the heads are all I want. They act like they've been
set to a keybounce timeout of about a millisecond. ... The arrow
click increments the number of cells in a table row (effectively), and
it shoots up from 5 to 26 columns almost instantly (that's the
internal max I set).
Is the scroll bar's repeatinterval set to a reasonable value?
-- Russell
--
http://mail.python.org/mailman/listinfo/python-list
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Problem with Tkinter scrollbar callback
Hi All-- I'm having two problems with the scrollbar callback on linux systems (Fedora 7, Suse 10.1,2 and 3 all exhibit the issues). Problem one: on Windows, the callback is called with the arguments as specified in the doc: scroll, 1 or -1, units. When I run the identical code on linux, the callback is invoked with only one argument, 1 or -1. Here's a small program which demos the problem: begin #!/usr/bin/env python from Tkinter import * import sys def die(event): sys.exit(0) def sDoit(*args): for i in args: print scrollbar:,i, type(i) root=Tk() f=Frame(root) f.pack(expand=1,fill=BOTH) button=Button(f,width=25) button[text]=Quit button.bind(Button,die) button.pack() xb=Scrollbar(f,orient=HORIZONTAL,command=sDoit) xb.pack() root.mainloop() =end=== On Windows, it produces the correct output scrollbar: scroll type 'str' scrollbar: 1 type 'str' scrollbar: units type 'str' but on linux, it produces scrollbar: 1 type 'str' I can't believe that this is a bug that has not already been fixed, so I must be doing something wrong. But what? I'm surely overlooking something dead obvious. ... Note that I don't want to use this as a scrollbar, all I need is the direction. The second problem is more pernicious, in that I can work around the first problem, and I don't really have a clue on the second. On Windows, clicking one of the arrow buttons produces one callback. On Linux, in the real application, if I click an arrow button once, the callback continues to be called until I kill the app. That doesn't happen in the small program I've provided above, so I'm at a bit of a loss where to start looking. Any hints? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with Tkinter scrollbar callback
Hi All-- That helps. Doing a get() on the scrollbar before a set(0.0,0.0) returns a 4-tuple: (0.0, 0.0, 0.0, 0.0) ! I did the set(0.0,0.0) and now the callback gets the correct number of arguments. However, I'm still getting the weird behaviour when clicking the arrowheads--and the heads are all I want. They act like they've been set to a keybounce timeout of about a millisecond. ... The arrow click increments the number of cells in a table row (effectively), and it shoots up from 5 to 26 columns almost instantly (that's the internal max I set). Metta, Ivan On Jan 24, 2008 4:27 PM, Russell E. Owen [EMAIL PROTECTED] wrote: In article [EMAIL PROTECTED], Ivan Van Laningham [EMAIL PROTECTED] wrote: Hi All-- I'm having two problems with the scrollbar callback on linux systems (Fedora 7, Suse 10.1,2 and 3 all exhibit the issues). Problem one: on Windows, the callback is called with the arguments as specified in the doc: scroll, 1 or -1, units. When I run the identical code on linux, the callback is invoked with only one argument, 1 or -1. Here's a small program which demos the problem: begin #!/usr/bin/env python from Tkinter import * import sys def die(event): sys.exit(0) def sDoit(*args): for i in args: print scrollbar:,i, type(i) root=Tk() f=Frame(root) f.pack(expand=1,fill=BOTH) button=Button(f,width=25) button[text]=Quit button.bind(Button,die) button.pack() xb=Scrollbar(f,orient=HORIZONTAL,command=sDoit) xb.pack() root.mainloop() =end=== On Windows, it produces the correct output scrollbar: scroll type 'str' scrollbar: 1 type 'str' scrollbar: units type 'str' but on linux, it produces scrollbar: 1 type 'str' I see the same bad thing on our RedHat Enteprise unix system which has the default tcl/tk 8.4.6. However I found that if you send the scrollbar the set command first then it behaves normally. I think it just starts out in a funny state where it has no idea how to display itself. -- Russell (P.s. it works fine on my MacOS X 10.4.11 system with default tcl 8.4.7 or with add-on 8.4.14). -- http://mail.python.org/mailman/listinfo/python-list -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.python.org/workshops/1998-11/proceedings/papers/laningham/laningham.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: OT: World's largest Python caught!:)
Hi All-- James Stroud wrote: http://www.afghania.com/News-article-sid-4792-mode-thread.html 3rd hit in google with world's largest python. The first two hits were your email below to the newsgroups. This hit says it's not the world's largest: http://www.reptilia.org/NEWS.htm And this one offers a better picture: http://www.clubavalanche.com/forums/index.php?showtopic=2837; Metta, Ivan James On Sunday 07 August 2005 09:15 pm, Ashok Rajasingh wrote: Hi Can I please get some information on this python? I saw a brief news clip last year am very keen to know more. Thanks Ashok Rajasingh 21 Cumberland street New Plymouth New Zealand +646 7575698 (home) 7599592 (work) ## Attention: The information contained in this message and or attachments is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. If you received this in error, please contact the sender and delete the material from any system and destroy any copies. Please note that the views or opinions expressed in this message may be those of the individual and not necessarily those of Tegel Foods Ltd. This email was scanned and cleared by NetIQ MailMarshal. ## -- James Stroud UCLA-DOE Institute for Genomics and Proteomics Box 951570 Los Angeles, CA 90095 http://www.jamesstroud.com/ -- http://mail.python.org/mailman/listinfo/python-list -- -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: [path-PEP] Path inherits from basestring again
Hi All-- Tony Meyer wrote: (Those who are offended by sweeping generalisations should ignore this next bit) [...generalisation bit snipped...] This is not only bullshit, it's elitist bullshit. Windows users are more clueless than users of posix systems. Pfui. Prove it or withdraw it. Sigh. I guess you didn't read or understand the first sentence? Yes, I read and understood it. Saying Don't read this if you don't want to be offended doesn't make an offensive statement inoffensive. This (readability without knowing the language/standard libraries) is a huge benefit of using Python. It's overrated. It must be macho to say I learned Python without reading books. No it is not. Have you used Python as pseudocode when teaching people how to program? Many people have. That's just one example. I grant that Python is much easier to learn than other programming languages; students can pick up the basics rapidly. Once the basics are mastered and mentoring is over, reliance on guess and intuition is not a substitute for documentation, or for reading the code if documentation is not available. People can subclass Path and add it if they really want it. They can use Jason's original module. My position is that the PEP without this use of __div__ is (a) better as a standard module, and (b) improves the chance of the PEP being accepted. I disagree. Using __div__ to mean path concatenation is no worse than using __add__ to mean string concatenation, and it is both easy to remember (once the manual is read) and easy to type. Requiring users who want / to mean what it has always meant in the path module is neither easy nor intuitive. On the face of it, Jason would seem to agree, since he created / as a synonym for joinpath(). However, if the intention here is to create something different from Jason's original module, create something different and call it by another name than path; don't attempt to guess what Jason really meant. It is not Pythonic to guess. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: [path-PEP] Path inherits from basestring again
Hi All-- Tony Meyer wrote: So far, there have been various statements that look like +0 for __div__, but no-one with a +1. (And I've said this a couple of times now, which really is just trolling for a +1 from someone). It's not a question of saving characters, but readability which, as you've said, is a matter of opinion. I like / as a shortcut to joinwith(). I like it a lot. I like it so much I'll give you a +2. (Those who are offended by sweeping generalisations should ignore this next bit) I think it's also worth considering that Windows users are more clueless than users of posix systems. The readability of __div__ comes from familiarity with posix filesystems; for a Windows user, \ would be the natural character. So we're making things more readable for users that are already more likely figure things out, and less readable for users that have trouble figuring things out. This is not only bullshit, it's elitist bullshit. Windows users are more clueless than users of posix systems. Pfui. Prove it or withdraw it. 1. ISTM that standard library modules should be as readable as possible, even for those that don't use them. If I'm reading the source for module X and it uses a Path object, then it should be pretty straightforward to understand what is happening without also having to read the Path source/docs. This (readability without knowing the language/standard libraries) is a huge benefit of using Python. It's overrated. It must be macho to say I learned Python without reading books. Next you'll tell me you never ask for directions when you're lost. 2. If I did use the Path module, then I wouldn't use __div__, because it looks less readable to me. I suppose I might find that I got annoyed typing joinpath, but I doubt it. Also, because I have followed this PEP, I know that __div__ means joinwith, so if I read code that used path, I would understand it - it's too late for me to try reading code as a 'fresh' user and see if it confuses me or not. Then that's your right, but don't try to take / away from people who use it and like it. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: [path-PEP] Path inherits from basestring again
Hi All-- Reinhold Birkenfeld wrote: Reinhold Birkenfeld wrote: Hi, the arguments in the previous thread were convincing enough, so I made the Path class inherit from str/unicode again. Thanks. * the following methods raise NotImplemented: capitalize, expandtabs, join, splitlines, title, zfill If path inherits from str or unicode, why not leave these? I can certainly see uses for capitalize(), title() and zfill() when trying to coerce Windows to let me use the case that I put there in the first place;-) What if I wanted to take a (legitimate) directory name 'parking\tlot' and change it to 'parkinglot'? Open issues: What about the is* string methods? What about them? What makes you think these wouldn't be useful? Imagine directory names made up of all numbers; wouldn't it be useful to know which directories in a tree of, say, digital camera images, comprise all numbers, all hex numbers, or alpha only? What about __contains__ and __getitem__? I find it hard to imagine what would be returned when asking a path for say, path[c:], other than the index. n=path[c:] = 0 ? What about path * 4? This one makes my brain hurt, I admit;-) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Image orientation and color information with PIL?
Hi All-- [EMAIL PROTECTED] wrote: Does anyone know if it is possible to determine if an image is horizontal/vertical and color or black white using the python image library? I have been searching this news group and the information was not all clear on this. How are you going to determine the orientation of an image without sophisticated image analysis? I suspect Adobe Photoshop can do it, but I don't know for sure. You'd have to look for things like sky, or clouds, overcast sky, people's faces, and so on and so forth. It'd be cool to have this available in Python, but unless the F-bot is busier than I thought and working behind the scenes using his time machine, it's not there now. If you write it I'll use it;-) Color vs BW ought to be easy, though, by analysing the color table, if there is one, and/or image mode. Check the PIL documentation. If you have only searched the newsgroup then you might have overlooked the docs. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Earthquake Forecasting Program July 11, 2005
Hi All-- Bob Officer wrote: On Mon, 11 Jul 2005 08:31:31 GMT, in sci.geo.earthquakes, edgrsprj [EMAIL PROTECTED] wrote: PROPOSED EARTHQUAKE FORECASTING COMPUTER PROGRAM DEVELOPMENT EFFORT sigh here we go again... EDG is not a computer programmer, nor is he a geologist... The best guess seems to be that he is he is crackpot, often going from group to group espousing some sort of knowledge and asking for people to forward his articles to government, schools and other professional bodies with a demand that public monies be giving to him to support his research. Well, I guess this is in line with how I persist in seeing the Subject: header. _Every_ time I look at it, my brain sees Re: Earthquake Fornicating Program. Brings a whole new dimension to Did the earth move for you too, honey?, doesn't it? Metta, the-devil-made-me-ly y'rs, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Codecs
Hi All-- As far as I can tell, after looking only at the documentation (and not searching peps etc.), you cannot query the codecs to give you a list of registered codecs, or a list of possible codecs it could retrieve for you if you knew enough to ask for them by name. Why not? It seems to me that if I want to try to read an unknown file using an exhaustive list of possible encodings, the best place to keep the most current list is the codec registry itself, not in the documentation for the codec module. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: map/filter/reduce/lambda opinions and background unscientificmini-survey
Hi All-- Tom Anderson wrote: I understand that the backslash is popular in some ivory-tower functional languages. Currently, a backslash can be used for explicit line joining, and is illegal elsewhere on a line outside a string literal, so i think it's available for this. It would be utterly unpythonic to use puntuation instead of a keyword, and it would make no sense to novices, but it would scare the crap out of C programmers, which has to be worth something. Oh, I don't think so. Don't forget that Perl was written by impatient C programmers. I think scaring C programmers, like giving engineers too much information, is really hard to do. Live by the sword, die by the sword. Metta, int *(*(*foo)())()-ly y'rs, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Modules for inclusion in standard library?
Hi All-- Max M wrote: Another good bet is BeautifulSoup, which is absolutely great for scraping content from webpages. http://crummy.com/software/BeautifulSoup/index.html Not if you want to handle HTML in anything but ASCII. BeautifulSoup insists you change your site.py to change the default encoding if you want to use non-ASCII. It might work beautifully, but I won't use it, at least not until it's fixed to understand encodings. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: map/filter/reduce/lambda opinions and background unscientificmini-survey
Hi All-- Tom Anderson wrote: Comrades, I expect tons of disagreement in the feedback, all from ex-Lisp-or-Scheme folks. :-) I disagree strongly with Guido's proposals, and i am not an ex-Lisp, -Scheme or -any-other-functional-language programmer; my only other real language is Java. I wonder if i'm an outlier. So, if you're a pythonista who loves map and lambda, and disagrees with Guido, what's your background? Functional or not? I'm a pythonista who doesn't love them. In fact, even though I've done more than my fair share of lambda Tkinter programming using lambdas, I've never been happy with lambda. And I've spent months inside of Lisp/Emacs Lisp/Scheme, too (I have the world's second largest .emacs file [my friend Andy Glew has the largest], even though I can't use it on Windows;-). I find list comprehensions easier to understand than map, and small named functions or, better yet, class methods, *tons* easier to read/understand than lambda--there are too many restrictions you have to remember. Personally, I find that Lisp its derivatives put your head in a very weird place. Even weirder than PostScript/Forth/RPN, when you come right down to it. I won't miss them, but since I don't use them now, that doesn't mean a whole lot. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python for everything?
Hi All-- Mike Meyer wrote: [EMAIL PROTECTED] writes: As other have noted, C was never really used for everything. Unix tools were designed to connect together from the very beginning, which is what makes shell scripting so powerful. This was true before there was a C. Likewise, some things you need more control over the machine than you get in C - those are still done in assembler. These days, C compilers let you embed assembler statements in your C, so some of these things are done in such variants. It really was used for everything; C compilers have *always* let you include assembler, with the asm keyword. Unless you're talking about the early days of DOS/Windows compilers, about which I know little, but all *KR* compilers had asm. If you wanted to write kernel code and device driver code (including disk drivers) for large Unix systems, asm was a requirement. To put it in perspective, for Gould systems in the 80s, for the entire OS (BSD-derived Unix), there were under 100 lines of assembler, all in a very few device drivers (multiple thousands of lines of code, don't remember exactly how many). And living with structs instead of classes was not nearly as much of a pain in the butt as you make out; it was perfectly reasonable to include methods within structs, by including a pointer to a function. X10 and X11 showed just how object-oriented you could get with C, using callbacks with required signatures, and specifying how Widgets were to be written--contracts before there were contracts. It's true that OO languages are better, and languages like Python which allow you to combine fairly low-level calls with an OO worldview make life *vastly* easier, but C is still hugely flexible, highly adaptable, and very powerful. For about 10 or 15 years there, knowing C was pretty much a guarantee of a good job. That changed when C++ compilers became common and good and not merely preprocessors that wrote really, really ugly C. Metta, while(*s++=*p++);-ly y'rs, Ivan;-) -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Favorite non-python language trick?
Hi All-- Mike Meyer wrote: Since the user is the one bound with BD languages, they are clearly tops. Which makes Python a bottom. Well, we certainly hope Python has a safe word. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Thoughts on Guido's ITC audio interview
Hi All-- Aahz wrote: Perhaps. But adding the time to learn those IDEs in addition to the time to learn Java is ridiculous. I've been forced to use Java a bit to support credit cards for our web application; I've got a friend whose Java-vs-Python argument hinges on the use of Eclipse; I was unable to make use of Eclipse in the time I had available for the project. Were there _good_ reasons not to do the credit card part of the web app in Java instead of Python? As in, there is no secure module, or you didn't have time, or Python doesn't support crucial APIs? I'm very curious. f u cn rd ths, u cn gt a gd jb n nx prgrmmng. l tk t. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Which kid's beginners programming - Python or Forth?
Hi All-- Roy Smith wrote: When you learn Forth, you will have learned Forth. About the best that can be said about that is that It'll give you a head-start if your next goal is to learn PostScript :-) In which case, you should start with PostScript;-) I learned it by plugging a glass tty into the serial port on one of the very first AppleWriters and typing away. None of this fancy-shmancy '' business;-) But what a great reward, having graphics come out the printer when you typed 'show'. Seriously, PostScript is a lot more fun to learn than Forth, and more directly useful. Since the rewards are so immediate, a kid's attention could be gained and kept pretty easily. But I'd still recommend Python as a first programming language. Keep to the standard stuff--ignore list comprehensions and so on--until he or she has the basic control flow down pat. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: PEP ? os.listdir enhancement
Hi All-- Thomas Guettler wrote: I like it. But as you noticed, too, join would be better than abs. Example: # mylistdir.py import os import sys def mylistdir(dir, join=False): for file in os.listdir(dir): yield os.path.join(dir, file) print list(mylistdir(sys.argv[1])) Mmmm, how about: # mylistdir.py import os, os.path import sys def mylistdir(dir, join=False): for file in os.listdir(dir): if join: yield join(dir, file) else: yield file print list(mylistdir(sys.argv[1])) or print list(mylistdir(sys.argv[1],os.path.join)) That way I could def my own join and call it as print list(mylistdir(sys.argv[1],myjoin)) (Note that in your version the join argument isn't used at all.) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: pickle broken: can't handle NaN or Infinity under win32
Hi All-- Tim Peters wrote: Fortran is so eager to allow optimizations that failure due to numeric differences in conformance tests rarely withstood challenge. +1 QOTW Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: key - key pairs
Hi All-- Terry Hancock wrote: On Thursday 23 June 2005 02:40 pm, Florian Lindner wrote: is there in python a kind of dictionary that supports key - key pairs? I need a dictionary in which I can access a certain element using two different keys, both unique. For example: I've a dictionary with strings and times. Sometimes I have the string and I want to have the time, other time I've the time and I want the string. It is important that one of the keys supports the min/max builtin function. Well, really, you're always using one or the other as the key and the other as the value. Furthermore, it is not in the general case assured that you can do this --- the keys may not really be 1:1. If you are content to restrict yourself to the 1:1 case, you can construct an inverse dictionary from the first dictionary like this: time2string = dict([ (b,a) for a,b in string2time.items() ]) Note that if string2time has duplicate values, this will arbitrarily pick one (in a consistent, but implementation dependent way) to use as the key in the inverse mapping. Well, Florian said, using two different keys, both unique; if that is true, then a single key maps to a single value vice versa. Easiest way, it seems to me, would be to subclass dict and provide get/set that always insert the value as a key. So that dict[string]=time also means dict[time]=string. Only one dict required then. Or am I missing something? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: A World Beyond Capitalism 2005,
Hi All-- Jenta wrote: Interesting. To anyone who didn't want to know about the conference, my apologies. To everyone who was supportive, thanks. It is appreciated, because like many activists, many python activists have skills which are able to network people worldwide. So, uh, what skills do python activists have? Why are their skills able to network people when the people who have the skills can't? And what defines a python activist anyway? Blowing up Perl installations worldwide? That takes skill? I thought they could handle that themselves. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: pickle broken: can't handle NaN or Infinity under win32
Hi All-- Tim Peters wrote: Across platforms with a 754-conforming libm, the most portable way is via using atan2(!): pz = 0.0 mz = -pz from math import atan2 atan2(pz, pz) 0.0 atan2(mz, mz) -3.1415926535897931 Never fails. Tim, you gave me the best laugh of the day. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: functions with unlimeted variable arguments...
Hi All-- Paul Rubin wrote: Xah Lee [EMAIL PROTECTED] writes: but are there other solutions? Xah Geez man, haven't you been around long enough to read the manual? def f(*a): return a He's been around long enough to rewrite the manual. Metta, if-he-succeeds-we'll-all-have-to-take-up-perl-ly y'rs, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: maybe a bug in python: NOW Pythonic Gotchas
Hi All--
This little gotcha ought to be number one on The Official List of
Pythonic Gotchas, which should be required reading for everyone.
What? There isn't one? Why not?
Send me your tired, your poor, your huddled gotchas yearning to breathe
free. I'll whup 'em into shape and make a doc page. The gods of
documentation (as opposed to the gods _in_ documentation) can transfer
it to the Official Documentation Homeland, or not, as they see fit.
Metta,
Ivan
Tiago Stürmer Daitx wrote:
Just as everyone said, use ('a',) instead of ('a'). As Steve said
there are lots of documentation about it. Check the Library Reference
at http://www.python.org/doc/current/lib/typesseq.html#l2h-155 or to
make things more clear you could read the tuples section in the
tutorial at
http://docs.python.org/tut/node7.html#SECTION00730
my 2 cents
Regards,
Tiago S Daitx
On 6/5/05, flyaflya [EMAIL PROTECTED] wrote:
a = {1: (a)}
a[1]
'a'
why not ('a')? when
a = {1: (((a)))}
a[1]
'a'
the result is 'a' too,not (((a))).but when use[a] or
(a,b),the
tuple is longer than 1, it's no problem.
--
[http://www.flyaflya.com/]
--
http://mail.python.org/mailman/listinfo/python-list
---
--
http://mail.python.org/mailman/listinfo/python-list
--
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: REQ: Small Perl to Python conversion needed
Hi All-- John Machin wrote: how to duplicate the following bit of code using Python dictionaries. [expletives deleted] +1 QOTW Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
PySol not working on WinXP, SP2
Hi All-- I've been using PySol-4.40 for years, because that was the last Windows installer version I could find. My wife's been using it for almost the same length of time. That version's worked just fine on W98, W98SE, W2K (server included), and WinXP SP1. I upgraded to SP2 and pysol fails silently. Running 'python pysol.pyw' gives me this error: Traceback (most recent call last): File pysol.pyw, line 64, in ? imp.load_compiled(__main__, sys.argv[0]) ImportError: Bad magic number in C:\Program Files\PySol-4.40\data\pysol.pyc I can't find any later version on google, although I turned up a thread on this list regarding running pysol in a later version on W98. I also found http://avitous.net/software/pysol-windows/py23.shtml but the version he has REQUIRES ActiveState python 2.2, even though he says he's put together a version for 2.3--and of course, I'm running Python 2.4. My wife's going to be force to upgrade to SP2 some of these days, and she won't be happy if her solitaire doesn't work. Does anyone have a working version? Anyone know what happened to Markus ... Oberhumer? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: PySol not working on WinXP, SP2
Hi All-- Robert Kern wrote: Skip Montanaro wrote: Ivan I can't find any later version on google... It may not help you much, but I was able to get it working on MacOSX by grabbing the latest available source and tracking down the contents of the data directory via the Wayback Machine. If you'd like to give it a try (I'm not sure how you'd get sound stuff working - I'm not a Windows guy), let me know. Source, data, and OS X binaries for 4.82 also available from here: http://homepage.mac.com/brian_l/FileSharing6.html Very cool, but MacOSX doesn't help me much. I'm sure I could get it working on Linux, but I'd like to be able to run it on my main machine, instead of having to hop back over to the Win98 machine (an option my wife doesn't have). Sound server seems to be available as a .pyd file for the Win32 extensions, so I think that's not a problem. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: PySol not working on WinXP, SP2
Hi All-- James Carroll wrote: You might try finding the source to pysol, and you might notice that you have a bunch of *.py files and for each of those, a corresponding .pyc file. If you delete all the pyc files, then they'll get re-created from the .py files, and you might be all set. Nope. The pyc files don't match the py files, and he imports the pyc files directly. That's what 'imp.load_compiled(__main__, sys.argv[0])' means. The windows version that Markus shipped never included the .py files anyway, since he didn't need them. Getting the source and trying to run it directly would work if there were any doc help at all, but there's none. What little there is is aimed at Linux. Makefiles need to be constructed, there are templates that get filled out automatically. I can get it working eventually, I suppose, but I was really hoping someone else had done the work already, or at least had pointers to docs on how to get it working. Metta, Ivan -Jim On 6/1/05, Ivan Van Laningham [EMAIL PROTECTED] wrote: Hi All-- I've been using PySol-4.40 for years, because that was the last Windows installer version I could find. My wife's been using it for almost the same length of time. That version's worked just fine on W98, W98SE, W2K (server included), and WinXP SP1. I upgraded to SP2 and pysol fails silently. Running 'python pysol.pyw' gives me this error: Traceback (most recent call last): File pysol.pyw, line 64, in ? imp.load_compiled(__main__, sys.argv[0]) ImportError: Bad magic number in C:\Program Files\PySol-4.40\data\pysol.pyc I can't find any later version on google, although I turned up a thread on this list regarding running pysol in a later version on W98. I also found http://avitous.net/software/pysol-windows/py23.shtml but the version he has REQUIRES ActiveState python 2.2, even though he says he's put together a version for 2.3--and of course, I'm running Python 2.4. My wife's going to be force to upgrade to SP2 some of these days, and she won't be happy if her solitaire doesn't work. Does anyone have a working version? Anyone know what happened to Markus ... Oberhumer? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list -- -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: working with pointers
Hi All-- Dave Brueck wrote: Michael wrote: sorry, I'm used to working in c++ :-p if i do a=2 b=a b=0 then a is still 2!? so when do = mean a reference to the same object Always. and when does it mean make a copy of the object?? Never. To which I would add (without attempting to preserve Dave's admirable brevity): a=[3,5,6] b=a b is a reference to a; both b and a are names bound to [3,5,6]. a=[3,5,6] b=a[:] a and b are now bound to different instances of [3,5,6] Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: the problem with cgi
Hi All-- EP wrote: Has anyone seen that problem with running a python cgi script in a server? It takes you to myspace.com/redmartian or something. Anyway, does anyone know when this problem will be fixed? Xah Lee is working on it. Oh, that's reassuring. Does he have his tinfoil hat on? Metta, Ivan PS: Sorry, I meant, Does he have his fucking tinfoil hat on? -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python forum
Hi All-- Peter Hansen wrote: Ivan Van Laningham wrote: Robert Kern wrote: dict.org says _forums_. I used _fora_, but I'm silly. It also says appendixes and indexes are OK. Yahoos. Should that be Yaha? g Nope. I appreciate the sentiment, but Yahoo is neither Latin nor Greek. Instead, it was invented by Jonathan Swift for _Gulliver's Travels_, published in 1726; since it is a made-up English word, it follows the rules of English. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python forum
Hi All-- Robert Kern wrote: Skip Montanaro wrote: (Is forums okay as a plural of forum or should I have used fora?) dict.org says _forums_. I used _fora_, but I'm silly. It also says appendixes and indexes are OK. Yahoos. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Is Python suitable for a huge, enterprise size app?
Hi All-- john67 wrote: LOL! That is really funny, in a dark humor kind of way. I don't want the project to fail either. I am not convinced that we will succeed if we go the Java route. However, I am just a grunt in the chain and not in a position to make the decision. I hope I can have some influence on the decision though. I will be pleased if I can get someone to at least seriously consider Python. I understand your sentiment about not encouraging something that might fail to be done in Python. Hopefully it won't come to that. Thanks for the info on Phaseit apps. What you're going to run into are two major stumbling blocks. One, Python's got no credibility with management types unless the credibility's already there. Python? Never heard of it. Tell me about it. ... Oh, it's interpreted, is it? Interesting. You can see Python going down the sewer pipes, right on their faces. Two, security. This python sounds pretty interesting. Tell me about the security. How can we prevent people from stealing our source code, which we just spent millions developing? ... Hmm, trust the developers out there not to peek? Oh, sure, let's use it. (True, there are ways around the second, but you're going to have to talk _very_ fast and have ALL the answers before the management type gets to his/her office and shuts the door in your face and on your idea.) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: NaN support etc.
Hi All-- Martin v. Löwis wrote: Andreas Beyer wrote: How do I find out if NaN, infinity and alike is supported on the current python platform? To rephrase Sebastian's (correct) answer: by 1. studying the documentation of the CPU vendor 2. studying the documentation of the compiler vendor, and performing extensive tests on how the compiler deals with IEEE-754 3. studying the documentation of the system's C library, reading its source code (if available), and performing extensive tests of the IEEE-754 support in the C libray 4. studying Python's source code (you can spare yourself reading documentation because there is none) Is there an 'official' handle for obtaining this information? No. Similar: How do I get the maximum/minimum double for current machine? By experimentation, and/or reading vendor documentation. Something that might help a little is http://www.pauahtun.org/TYPython/machar.zip It's C source that you can compile on a unix system, and an .exe for windows, to probe the limits of the IEEE-754 support on a system. It's not set up to show you NaN, but by studying the docs on your particular system you could modify the code to print stuff like that out, I'd think. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Is Python suitable for a huge, enterprise size app?
Hi All-- George Sakkis wrote: Ivan Van Laningham wrote: An idea that perhaps takes the best of both worlds is use java for the high level architecture and static type interfaces, and write the bulk of the implementation in jython. PSF has awarded a grant to make jython catch up with cpython, and that's good news for making the transition from java to python smoother to a large audience. Others may have more to say on the pros and cons of going with java/jython instead of cpython, but it seems a good compromise to me. And another option that you'll find has a great deal of viability is using Python in the build process. Python's _wonderful_ to glue things together, and its i18n capabilities are outstanding; I handled all the internationalization and mock translation processes for a project near the size you're describing in a dozen languages without working up a sweat. Python is easily called by Ant, it deals really well with unicode utf-8, can easily parse Java resource files and XML files, and you can stick all this stuff together in a few hours to handle _really big builds_. It's been nearly a year since the project failed and the company riffed 60 people from our site besides me, and the java monkeys that are left are still using my Python scripts, in the same state I left 'em. They can run them but they can't modify them. And every time they have to produce a new mock-translation build, they complain to their boss: We used to have someone here who LIKED to do this stuff! And who could fix it when it broke! We laid him off WHY ;-) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Representing ambiguity in datetime?
Hi All-- Ron Adam wrote: John Machin wrote: On Tue, 17 May 2005 17:38:30 -0500, Terry Hancock [EMAIL PROTECTED] wrote: What do you do when a date or time is incompletely specified? The reason the ranges for the month and day specifiers begin with zero is that MySQL allows incomplete dates such as '2004-00-00' to be stored as of MySQL 3.23. So it seems using 0's for the missing day or month may be how to do it. This is somewhat the approach I took in order to allow users to specify an incomplete Mayan date in order to list possibilities. But instead of 0 (which is a valid entry in most Mayan date components), I used None. The web version can be found at http://www.pauahtun.org/Calendar/tools.html (the Search for Matching Dates button) The paper describing the incomplete Mayan date tool is at: http://www.pauahtun.org/python_vuh.html Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Documentation (should be better?)
Hi All-- The Python docs are not ideal. I can never remember, for instance, where to find string methods (not methods in the string module, but methods with ''), but I can remember a tortured path to get me there (yes, I know, fix my brain; easier said than done). The module index is good, if what you're looking for is in a module. The tutorial is good. I can usually end up where I want to be by picking up my copy of _Python in a Nutshell_. 95% of the time I can find what I want in there or from there. The other 5% is too new, in the _Python Cookbook_ or in a third-party module/lib. Or it's what I'm trying to write;-) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Documentation (should be better?)
Hi All--
Yes. There are multiple ways I can correct myself, some, I'm sure,
involving chains and whips. But you're all missing the point:
Christopher is right! Python docs are not as good as PHP docs. Why
not? Why do I have to be told Hey, there are fifty ways to get what
you want! when I should be able to go to the main doc page and SEE the
right link to click. Why isn't there a Methods in Standard Objects
page, for instance? Why would I have to search?
And the search is sucky, anyway. So there;-) Christopher described the
right way. I should be able to type string methods into the text box,
push submit, and IT SHOULD HAND ME THE PAGE. Not Results 1 - 20 of
about 9,800 from www.python.org for string methods. (0.78 seconds) (and
no, I am not exaggerating). And the first hit is from Python 2.1.3, NOT
the current doc. Sorry. No cigar.
There's Only One Way to Do It, except in the Docs, that is. Good as
Google is, it is not good for a doc search. We don't have a doc search,
we have a doc hurl.
BTW, my tortured method is quicker than Bruno's, because to use his
method I'd have to start the interactive interpreter.
Bruno Desthuilliers wrote:
Ivan Van Laningham a écrit :
Hi All--
The Python docs are not ideal. I can never remember, for instance,
where to find string methods (not methods in the string module, but
methods with ''),
dir('')
Metta,
Ivan
--
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python Documentation (should be better?)
Hi All-- Steven Bethard wrote: Ivan Van Laningham wrote: I should be able to type string methods into the text box, push submit, and IT SHOULD HAND ME THE PAGE. Not Results 1 - 20 of about 9,800 from www.python.org for string methods. (0.78 seconds) Regardless, assuming the right link is the first one, do I understand your complaint correctly as saying that you want Python to automatically pick the first link for you? Do others agree with this complaint? I imagine it wouldn't be that hard to add the equivalent of Google's I'm Feeling Lucky button beside the submit button if that would really help. No. If I type string methods into the search box (OK, I will type the quotes), how many pages can there be? If there are two or more, give me the choice; if there is one, take me to it. Why are there 9,801 pages containing string, or method, or both, or neither? What's wrong with this picture? http://docs.python.org/lib/string-methods.html In fact, I tried just string and couldn't find anything but the current docs in the first 10 pages (and was too lazy to check anything else). Could you tell me how to reproduce your results (of getting Python 2.1.3)? http://www.python.org/doc/ Type string methods into the box; push submit. Result: Results 1 - 20 of about 9,800 from www.python.org for string methods. (0.14 seconds) I did not go to docs.python.org, I went to www.python.org and clicked on the doc link. There is a difference, clearly, but I maintain there should not be. If I click on Documentation on the main page, am I asking for All possible old and new and broken and repaired and intermediate documentation pages? No, I kind of thought I was asking for the latest documentation. I tried string methods at docs.python.org, and got Results 1 - 20 of about 455 from docs.python.org for string methods. (0.11 seconds); string methods retrieved Results 1 - 10 of about 30 from docs.python.org for string methods. (0.13 seconds). Why the difference? Metta, i-have-not-yet-begun-to-rant-ly y'rs, Ivan Sorry I am out of room for smiley faces -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Documentation (should be better?)
Hi All-- Robert Kern wrote: Ivan Van Laningham wrote: http://www.python.org/doc/ Searching on docs.python.org goes through just the stuff that's on docs.python.org, which is pretty much just documentation. Google's magic points to the current documentation. Searching on www.python.org trolls through the entire www.python.org site. The search box doesn't narrow its scope just because you happen to be in the Documentation section currently. It doesn't get the current documentation because Google's magic gets a bit confused. I get that. My question, cleverly concealed in a rant, was, Why does clicking on the Documentation link at python.org NOT take me to docs.python.org? Why is there a difference? If there must be a difference, why isn't the difference labelled as such? This is a difference that makes a difference. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Documentation (should be better?)
Hi All-- John Bokma wrote: Ivan Van Laningham wrote: Python docs are not as good as PHP docs. Oh my. I hope you are just making that up. PHP documentation is guesstimated on how PHP works on average. Add the online comments clutter and you probably are better off reading the source. I didn't write that; I was riffing on Christopher's contention that Python's docs ought to be awesome, which I think ought to be true. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Advice needed on __del__
Hi All-- Fredrik Lundh wrote: Python is not C++. I dunno if this makes QOTW, but I vote we put this in our list text that goes out with each and every list message. There will still be a lot of people who don't read it, but at least we'll get to say, We told you so. do-buddhists-get-to-say-that?-ly y'rs, Ivan;-) -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Trouble saving unicode text to file
Hi All-- John Machin wrote: The general rule in working with Unicode can be expressed something like work in Unicode all the time i.e. decode legacy text as early as possible; encode into legacy text (if absolutely required) as late as possible (corollary: if forced to communicate with another Unicode-aware system over an 8-bit wide channel, encode as utf-8, not cp666) +1 QOTW And true, too. i-especially-like-the-cp666-part-ly y'rs, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Whats the best Python Book for me
Hi All-- On Sun, 01 May 2005 20:18:39 GMT, John Smith [EMAIL PROTECTED] wrote: I already know C/C++ programming and now wish to learn Python to do scripting for some games that are coming out. What book would you recommend. I am thinking Teach Your Self Python in 24 Hours is probably the best place to start... If you can program in C C++, I wouldn't recommend starting with my book. It's geared to people who know very, very little programming (Python Mind, Beginner's Mind). I think that most of what you have to do is unlearn things you already know how to do. I started in Python from where you are, with the addition of a passel of Postscript programming and enough Lisp to make me dangerous, and learned by setting myself a real, useful task that hadn't been done before. I dug through the manuals and through Lutz' _Programming Python_ and I asked dumb questions on this list. If I were starting now, in your place, I'd get a copy of the _Python Cookbook_ (2e) and keep that handy. It's a good place to learn idioms, and that's what you're most in need of right now. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Fwd: how to find the drive in python/cygwin?
Hi All-- Jason Tishler wrote: Ivan, On Tue, Apr 26, 2005 at 07:02:48PM -0600, Ivan Van Laningham wrote: Use win32api to find drives: cut here #!/usr/bin/python # -*- coding: utf-8 -*- import os import os.path import win32api [snip] AFAICT, the win32api module has not been ported to Cygwin Python. I'm not running Cygwin, but Uwin. I installed regular Python: Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. ^Z with the win32api that matched. I have no trouble running it. Is there some reason to prefer a Python compiled by the Cygwin tools? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Fwd: how to find the drive in python/cygwin?
Hi All-- Jason Tishler wrote: Ivan, It depends on your needs. If you are looking for a more Unix-like Python, then the Cygwin version would probably be better. If Windows-like, then the native Windows version would probably be better. The OP seem to be interested in a Cygwin Python solution -- not a Windows one. So, I was just clarifying that the win32api module is not supported under Cygwin Python. Could you clarify? I always thought that the only thing really different were the default path assumptions--/ instead of \, and so on--rather than anything substantive. I try to use os.path.sep() and os.path.join(), etc. What else could bite me? ;-) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Python documentation moronicities (continued)
Hi All-- Richie Hindle wrote: Xah is right - I have a copy here of his message of 18th April, saying i have rewrote the Python's re module documentation.. Which announcement alone I take as evidence sufficient unto itself. I shall not be reading the rewrote documentation. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Fwd: how to find the drive in python/cygwin?
Hi All-- Use win32api to find drives: cut here #!/usr/bin/python # -*- coding: utf-8 -*- import os import os.path import win32api import sys def findAllDrives(): Drives=[] print Searching for drives... drives=win32api.GetLogicalDriveStrings().split(:) for i in drives: dr=i[-1].lower() if dr.isalpha(): dr+=:\\ inf=None try: inf=win32api.GetVolumeInformation(dr) except: pass # Removable drive, not ready # You'll still get the drive letter, but inf will be None Drives.append([dr,inf]) return Drives if __name__==__main__: drives=findAllDrives() for i in drives: print i[0],i[1] cut here Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Multiple tuples for one for statement
Hi All-- R. C. James Harlow wrote: or just: for a,b,c in (tup1, tup2, tup3): print a print b print c And this works in Python version??? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Multiple tuples for one for statement
Hi All-- R. C. James Harlow wrote: On Monday 25 April 2005 14:34, Ivan Van Laningham wrote: Hi All-- R. C. James Harlow wrote: or just: for a,b,c in (tup1, tup2, tup3): print a print b print c And this works in Python version??? Ah, reading the replies to the original post, this works but doesn't give the result that the original poster wanted. Define works: a=(1,2,3,4,9,43,256,8,2021) b=(1,0,3,4,7,999,256,8,2023) c=(1,7,8,4,9,43,,8,2028) for x,y,z in (a,b,c): print x,y,z 12 [/c/CDListings][8] python fneeg.py Traceback (most recent call last): File fneeg.py, line 8, in ? for x,y,z in a,b,c: ValueError: too many values to unpack PyVersion: Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Multiple tuples for one for statement
Hi All--
Peter Hansen wrote:
Define works:
a = (1,2,3)
b = ('a','b','c')
c = (None, 'foo', 3.14)
tup1 = (1,2,3)
tup2 = ('a','b','c')
tup3 = (None, 'foo', 3.14)
for a,b,c in (tup1,tup2,tup3):
... print a
... print b
... print c
...
1
2
3
a
b
c
None
foo
3.14
It's a valid interpretation of the OP's
ambiguously stated requirements, though probably
not the right one.
I can see that now. I had three hours sleep last night and my brain
hurts, so I don't get it. I seek enlightenment.
Metta,
Ivan
--
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: Multiple tuples for one for statement
Peter Hansen wrote: Ivan Van Laningham wrote: I can see that now. I had three hours sleep last night and my brain hurts, so I don't get it. I seek enlightenment. So do I: did you mean you don't even get what my code is doing...? Yes. I barely remember my own name right now. (My sample works only because I created tuples that had exactly three items each, of course. It's the same as your previous code which didn't work, except for the number of elements in each tuple. I wrote it just to show that R.C.James's idea was a reasonable, if probably mistaken, interpretation of the OP's request.) I worked out that the a,b,c must match the length of the tuples. The fog past that point is too dense. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Rudeness on this list [Re: rudeness was: Python licence again]
Hi All-- James Stroud wrote: On Sunday 24 April 2005 06:59 am, so sayeth François Pinard: As seen from here, the Python mailing list quality has been degrading significantly for the last half-year or so. That's funny. That's exactly as long as I've been on this list. I wonder if the correlation is causal? Nope. I've been MIA 4 years, and the only difference I can see between now and four years ago is that Tim, Guido, Barry a couple of others aren't here or don't participate very much. It was a pretty nice list then, it's a pretty nice list now, so I'm afraid I must disagree with François. Oh, and Gordon. Don't see Gordon around. Where's he? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: trying to read from dying disk
Hi All-- [EMAIL PROTECTED] wrote: I'm currently attempting something with http://www.python.org/doc/current/lib/node368.html but it seems the read operation is ignoring these signals just as it is ignoring my signals from the kill command -- perhaps unsurprisingly. Perhaps there is no hope. Basically, if you are waiting for a hardware interrupt that never comes, you are doomed. You can escape by rebooting; in dire cases the only way out is to power down. One of the prime sources of zombie processes on unix systems is users trying to interrupt (with ^C) a process that is waiting for a hardware interrupt. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: goto statement
Hi All-- Fredrik Lundh wrote: Maxim Kasimov wrote: how do use this here: are you still claiming you're not a troll? *plonk* Oh, I don't think he's a troll, but his license to use Python should be revoked. I think RPG would be a good language for him, don't you? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Name/ID of removable Media: how?
Hi All--
Heiko Selber wrote:
I am trying to find out (using Python under windows) the name of a CD that
is currently in the drive specified by a path name.
And while I am at it, I'd also like to know whether the specified drive
contains a CD at all, and whether the drive is actually a CD drive.
AFAIK, Python doesn't provide a way to do it, and a search in the web
yielded only soutions for Linux.
Can anyone show me a solution that works with windoze?
This works. The only thing you have to do is stuff a floppy into the
drive find out what the fstype is (that's inf[-1] in the code below)
so you can key on it. Try the docs for Mark Hammond's Win32, and
there's always his _Python Programming on Win32_.
import os
import os.path
import win32api
def findCDs():
cdDrives=[]
print Searching for cd drives...
drives=win32api.GetLogicalDriveStrings().split(:)
for i in drives:
dr=i[-1].lower()
if dr.isalpha():
dr+=:\\
inf=None
try:
inf=win32api.GetVolumeInformation(dr)
except:
pass # Removable drive, not ready
if inf!=None:
if inf[-1].lower().endswith(cdfs):
cdDrives.append([dr,inf])
elif inf[-1].lower().endswith(udf):
cdDrives.append([dr,inf])
return cdDrives
inf[0] contains the volume label if there is one and if there's a CD
loaded:
win32api.GetVolumeInformation(c:\\)
('God_C', -798323922, 255, 459007, 'NTFS')
Note that you must use the full drive spec, letter:\\ or
GetVolumeInformation() doesn't always work.
There are probably better ways to do these things, but they do work;
I've been using them constantly the last few days.
Metta,
Ivan
--
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: Name/ID of removable Media: how?
Hi All-- Tim's wmi stuff looked interesting, so I tried it out, and now I have a question. - #!/usr/bin/python import wmi import win32api c=wmi.WMI() for i in c.Win32_CDROMDrive(): v=i.VolumeSerialNumber print WMI serial,v,long(v,0x10) vn,sn,ln,flg,fstype=win32api.GetVolumeInformation(d:\\) print win32api serial,sn,long(sn) The output from the above script (drive d contains cd) is: WMI serial D0ADBEE7 3501047527 win32api serial -793919769 -793919769 What's the difference between the two serial numbers? WMI is returning a long converted to a hex repr string, while win32api is returning an int (type(sn) is type 'int'), converting to hex bears no resemblance to what WMI shows. What am I missing? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Name/ID of removable Media: how?
Hi All-- Tim Golden wrote: Try this: hex (-793919769) You might need to check back on recent discussions here re negative / positive numbers and hexadecimal. (Short version: we used to treat hex numbers with the top bit set as negative decimal numbers; now only negative hex numbers are negative decimals) Of course I tried that. Did you? Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. hex (-793919769) '-0x2f524119' Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Variables variable
Hi All-- Cameron Laird wrote: . I have a few comments on this: Python can do essentially what PHP does. One means is the getattr() Reinhold cites. HOWEVER, it's generally always a mistake to do so. Dictionaries are simply better. AND THAT'S TRUE IN PHP, too. I'm frankly disappointed in PHP leaders that they continue to promote this variable-variable idiom. As much as anything is certain in the realm of stylistic expression, dictionaries are a superior mechanism. I don't know if this dictionary insight is Cameron's, but my experience with Python has been that when I'm developing something from scratch, I'll start with a big pile of cruft. I think I'll need this. Oh, and that, too. And what about this! Oooh, cool! Then I start carving away the excess. It usually takes two or three iterations at carving to realize that whatever it is needs a dictionary. I have never seen a case where a dictionary didn't improve the design. +1QOTW. Well. Storing a Mayan number/date as a dictionary turned out to be a Spectacularly Bad Idea(tm);-), so I guess that's one case. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Slight discrepancy with filecmp.cmp
Hi All-- John Machin wrote: On Sun, 17 Apr 2005 22:06:04 -0600, Ivan Van Laningham [EMAIL PROTECTED] wrote: [snip] So I wrote a set of programs to both index the disk versions with the cd versions, and to compare, using filecmp.cmp(), the cd and disk version. Works fine. Turned up several dozen files that had been inadvertantly rotated or saved with the wrong quality, various fat-fingered mistakes like that. However, it didn't flag the files that I know have bitrot. I seem to remember that diff uses a checksum algorithm on binary files, not a byte-by-byte comparison. Am I wrong? According to the docs: cmp( f1, f2[, shallow[, use_statcache]]) Compare the files named f1 and f2, returning True if they seem equal, False otherwise. Unless shallow is given and is false, files with identical os.stat() signatures are taken to be equal and what is an os.stat() signature, you ask? So did I. According to the code itself: def _sig(st): return (stat.S_IFMT(st.st_mode), st.st_size, st.st_mtime) Looks like it assumes two files are the same if they are of the same type, same size, and same time-last-modified. Normally I guess that's good enough, but maybe the phantom bit-toggler is bypassing the file system somehow. What OS are you running? WinXP, SP2 You might like to do two things: (1) run your comparison again with shallow=False (2) submit a patch to the docs. You know, I read that doc, tried it, and it made absolutely no difference. Then I read your message, read the docs again, and finally realized I had flipped the sense of shallow in my head. Sheesh. So then I tried it with shallow=False, not True, and it runs about ten times slower, but it works. Beautifully. Now I have to go back and redo the first five thousand, but it's worth it. Thanks. Shows how much you need another set of eyeballs to debug your brain;-) (-: You have of course attempted to eliminate other variables by checking that the bit-rot effect is apparent using different display software, a different computer, an observer who's not on the same medication as you, ... haven't you? :-) ;-) Absolutely. Several different viewers and several different OSs. And my wife never sees anything the way I do;-) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Slight discrepancy with filecmp.cmp
Hi All-- I noticed recently that a few of the jpgs from my digital cameras have developed bitrot. Not a real problem, because the cameras are CD Mavicas, and I can simply copy the original from the cd. Except for the fact that I've got nearly 25,000 images to check. So I wrote a set of programs to both index the disk versions with the cd versions, and to compare, using filecmp.cmp(), the cd and disk version. Works fine. Turned up several dozen files that had been inadvertantly rotated or saved with the wrong quality, various fat-fingered mistakes like that. However, it didn't flag the files that I know have bitrot. I seem to remember that diff uses a checksum algorithm on binary files, not a byte-by-byte comparison. Am I wrong? If I am, what then is the source of the problem in my jpg images where it looks like a bit or two has been shifted or added; suddenly, there's a line going through the picture above which it's normal, and below it either the color has changed (usually to pinkish) or the remaining raster lines are all shifted either right or left? Any ideas? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: A little request about spam
Hi All-- The listowner could turn on the [PYTHON] headers. I'm not using spambayes yet, although I'm leaning toward it, but that step alone could save me some work when trying to decide based on subject line alone whether or not an email is spam. As it stands now, it's too easy to decide incorrectly that Subject: Inelegant is a spamdunk. Metta, Ivan mark hellewell wrote: On 4/14/05, James [EMAIL PROTECTED] wrote: Yes - it's been like that for the last month or so now and it's quite annoying, especially seeing as before it was working at near enough 100% accuracy. And I don't suppose there's much we can do about it? -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: A little request about spam
Hi All-- Roman Neuhauser wrote: # [EMAIL PROTECTED] / 2005-04-14 08:22:48 -0600: The listowner could turn on the [PYTHON] headers. I hope they don't. What's your reasoning? I'm not using spambayes yet, although I'm leaning toward it, but that step alone could save me some work when trying to decide based on subject line alone whether or not an email is spam. As it stands now, it's too easy to decide incorrectly that Subject: Inelegant is a spamdunk. Don't base your decisions (only) on subject then. Oh, and spam sent through the list would have the [PYTHON] space eater too, so what would it buy you? Of course I wouldn't base decisions _only_ on whether or not [PYTHON] appears in the subject. But I ordinarily do base decisions on the whole subject line, and I think that's perfectly reasonable. There's nothing else to go on without opening the message, and for HTML-based mail there's no surer way to let spammers know they've found a live email addres than to open it. You know that. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Converting a perl module to a python module would it be worthit?
Hi All-- bruno modulix wrote: Mothra wrote: Hi All, I am the current author of the Astro-Sunrise perl module http://search.cpan.org/~rkhill/Astro-Sunrise-0.91/Sunrise.pm and was wondering if it would be worth while to convert it to python. Only you and your module's users may tell... I'd use it. First off, I have never programmed in python. I would like to use this project to learn python. Well, this might be an answer to your first question !-) If you can get your mind off the @#)*[EMAIL PROTECTED]-ing Perl syntax, you'll be fine;-) Another question is, if I do this where can I put the results? As far as I know python has no CPAN. http://www.python.org/pypi/ They're working on the Python version of CPAN, but it's taking a long time. I think they started in 1998 or so? Haven't kept up, so I have no idea what's taking so long. I'm sure someone more knowledgeable than me will come along and set us straight. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Utah Python Users Group
Hi All-- Matthew Thorley wrote: lugal wrote: Is anyone aware if there's a Utah-based Python User Group? If not, does any else from Utah have any interest in forming a Utah-based Python User Group? I'm in Utah, I don't know of any groups but I might be interested. Ditto. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Compute pi to base 12 using Python?
Hi All-- Dick Moores wrote: Dan wrote at 18:02 4/13/2005: On Wed, 13 Apr 2005 03:27:06 -0700, Dick Moores [EMAIL PROTECTED] wrote: I'm just trying to help an artist acquaintance who needs (I just learned) the first 3003 digits of pi to the base 12. Now you've got me curious. Why would an artist want the first 3003 digits of pi to the base 12? He says, Do you know how I can get base12 pi? Because the chromatic scale is base12. c c# d d# e f f# g g# a a# b Oooh. Wanta hear it. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: [perl-python] Python documentation moronicities (continued)
Hi All-- Richie Hindle wrote: [Xah] motherfucking ... fucking ... fucking ... fucking ... fuck ... fucking fucking ... fucking ... mother fucking ... fucking ... piece of shit ... motherfucking ... fucking ... fucking ... big asshole ... masturbation ... Fucking morons ... fucking stupid ... fuckhead coders ... fuckheads ... you fucking asses. paypal me a hundred dollars and i'll rewrite the whole re doc in a few hours. Can we paypal you a hundred dollars to leave us alone? I'll pledge $10. Are there another nine people here who'll do the same? Why don't we pay him $100 to re-write the PERL docs? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: curious problem with large numbers
Hi All-- Windows XP, uwin running on Athlon XP 3000+: 0 [/c/users/ivanlan][1] python Python 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. 1e1 1.#INF Metta, Ivan Michael Spencer wrote: A further Windows data point from Cygwin: Python 2.4 (#1, Dec 4 2004, 20:10:33) [GCC 3.3.3 (cygwin special)] on cygwin Type help, copyright, credits or license for more information. 1e1 Inf regards Steve I guess the behavior is also hardware-dependent. FWIW, I tested on an Athlon XP box. -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Interpreter problem
Hi All-- Steve Holden wrote: It's odd that deleting the line and reentering it on the Linux box did not correct the problem. Perhaps vim recognized the format as having cr-lf and inserted it even though I was editing on Linux. Anyhow, it would have been a long time before I got this one. Thanks. A pleasure - just passing on payback for the huge amounts of help I've had here myself. See also my post in reply to rbt's latest for remarks on other possible fixes using vim. Vim is pretty smart. If you edit something in DOS mode, it'll preserve it. If you edit it in UNIX mode, it'll preserve that too. Thus, if you copy a dos file to a unix and edit with vim on both systems, it'll stay dos unless you change it; this is a Good Thing(tm). You run into problems with mixed line endings, or when it makes a difference to the program/OS (the shebang trick). In vim, if you run :se fileformat? it'll tell you exactly what file format you're using. The choices are (surprise) unix and dos. To change the file format of a file explicitly, simply issue the command :set fileformat=dos or :set fileformat=unix When you write the file, it'll be saved exactly the way you specify. Note that you get the ^M at the ends of lines when a file you've been editing in one mode shifts to another and you have to reload the file. Reading [open(foofile,rb)] re-writing [open(foofile,wb)] a file will do this if you are not excruciatingly careful. If you don't have dos2unix on your win system, but do have cat, you can use cat -d. #!/bin/sh cat -d $1 snot mv snot $1 (Prone to error, of course.) insert-std-disclaimers-about-vim-vs-classic-vi-behaviours-here-ly y'rs, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: shebang in cross platform scripts
Hi All-- Simon Brunning wrote: On Apr 6, 2005 2:37 PM, rbt [EMAIL PROTECTED] wrote: Does the line below have any negative impact on Windows machines? I develop and test mostly on Unix, but my scripts are often used on Win systems too. #!/usr/bin/env python Nope. On Windows it's just a comment. It works fine using cygwin, uwin, mks and pdksh, all available for Windows. Google is your friend. Symbolic links also work under uwin (don't know for sure about the others). That means you can install a link in /usr/bin to whereever python lives, and expect #!/usr/bin/python to work just fine. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: IronPython 0.7 released!
Hi All-- Tim Peters wrote: not-mentioning-that-i-don't-feel-particularly-embraced-yet-ly y'rs - tim Don't worry, Tim. You will. it-only-takes-a-little-groupthink-exercise-ly y'rs, Ivan Meta: 1984-in-what-base-was-that?-ly y'rs, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Best editor?
Hi All-- Aahz wrote: Use vim. 80% of the power of emacs at 20% of the learning curve. I think Aahz has it dead on. Umpty-mumble years ago I spent six weeks learning emacs lisp and customizing emacs until it did EXACTLY what I wanted. It was a great user interface, logical, consistent, orthagonal. It had only one thing wrong with it; it depended on hardware keyboard features that PC keyboards don't have. It would have taken me six weeks to retrain myself to the standard emacs interface, so I used vi. When vim became available, I switched to that. There's a good book available for vim: http://www.amazon.com/exec/obidos/ASIN/0735710015/qid=1112743931/sr=2-1/ref=pd_bbs_b_2_1/102-7196910-2449750 It's excellent; even the index is useful, which is more than I can say for 80% of the O'Reilly books out there, much as I love 'em. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Lambda: the Ultimate Design Flaw
Hi All-- Aahz wrote: Given the tension of the various requirements, I think that Python has broken only one way as little as possible, with the full intention of getting closer to its ideal when the time comes to break backward compatibility. I wrote my mayalib package under 1.3.0. It still runs perfectly well. I will only have to rewrite parts of it when the string module goes away. Everything else works, and will continue to work for the forseeable future. That's actually less change than happened with C over the same time period. But there, the language didn't change, just the environment around it--includes, libs, where things lived, etc. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Pseudocode in the wikipedia
Hi All-- Cameron Laird wrote: Welcome back, Ivan. Your follow-ups make one wonder about the span of related topics clp has been missing in your absence. Thanks for the welcome. Absence was more a consequence of working for idiots for four years (at 60-80 hours/week) than anything else. Now that I'm not working I've got time to catch up on what's new in Python. Nice to see a few familiar faces, too. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: string goes away
Hi All-- Michael Chermside wrote: The REAL lesson here is that you shouldn't follow any optimization rules without actually testing them. If you don't have time to test, then just don't optimize... write whatever is most readable. If you NEED more speed, then profiling and testing will show you what to fix. (Using a better algorithm is a different story... do that whenever you need it.) Tim Peters sayeth, Premature Optimization is the Root of All Evil. And he is not kidding. Ever try to persuade a boatload of Java programmers that? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Pseudocode in the wikipedia
Hi All-- Jeremy Bowers wrote: Your ass is your identity function. Python 2.3.5 (#1, Mar 3 2005, 17:32:12) [GCC 3.4.3 (Gentoo Linux 3.4.3, ssp-3.4.3-0, pie-8.7.6.6)] on linux2 Type help, copyright, credits or license for more information. 25 25 (_ | _) 25 There's clearly some interesting biometrics research to be done here, although there is a well-known ass-capturing attack based on readily commercially available machines from Xerox that might make it hard to make an ass-based identity system resistant to attacks. http://www.jacquelinestallone.com/rumps.html Metta, Ivan PS: I don't think this is an 0401 page; it's been there a while. -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: string goes away
Hi All-- Andreas Beyer wrote: I loved to use string.join(list_of_str, sep) instead of sep.join(list_of_str) I think the former is much more telling what is happening than the latter. However, I will get used to it. I disagree, but maybe you could think of it as a mutant list comprehension?-) But what about this: upper_list = map(string.upper, list_of_str) What am I supposed to do instead? u ['a', 'b', 'c'] [i.upper() for i in u] ['A', 'B', 'C'] Works pretty well for me. Better'n map() any day. I am sure there has been lots of discussion on whether or not to remove the string module. Maybe you can just direct me to the right place. I think we both missed it. I been off the list for four years. They wouldn'ta listened to me anyhow. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Stylistic question about inheritance
Hi All-- Michele Simionato wrote: recently I realized that they look better on the paper than in practice. A non-needed class just adds cognitive burden to the maintainer. Agreed. Too many classes make me think I'm back trying to figure out what the )([EMAIL PROTECTED] those guys were thinking making 200 twelve-line ASP classes. Ya think there's a hard-wired limit past which your brain melts? Paraphrasing Occam, I would say don't multiply base classes without necessity ;) +1 QOTW Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: [ANN]: Last Chance 2005 IORCC Entries
Hi All-- [EMAIL PROTECTED] wrote: FOR IMMEDIATE RELEASE: Wed Mar 30 11:58:39 CST 2005 LOCATION: http://iorcc.dyndns.org/2005/press/033005.html ANNOUNCEMENT: 2005 IORCC Deadline Approaches Entry Deadline March 31st, 2005 Less than 36 Hours Left, Great Prizes and Fun! Dear Rubyists, Perlists, Shellists, Cists and Hackers, I still don't understand why we are receiving this. Apparently, Pythonistas are either not eligible or we are lumped under 'Hackers.' If the former, I can certainly understand; it is possible, but fiendishly difficult, to write obfuscated code in Python, and thus, any Pythonista submitting *any* obfuscated code would win almost by default. The others wouldn't even bother to enter, in that case. If the latter, that shows what they think of us, and why should we enter a contest where we are dissed by being shoehorned into someone else's categories? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Using something other than ';' to separate statements
Hi All-- Michael Hoffman wrote: Jaime Wyant wrote: # This won't work if a 5: print a 5;else print Doh This will: [Doh, a 5][a 5] I highly discourage using it though--it's somewhat obtuse. Bad Michael. Bad, bad Michael. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Max files in unix folder from PIL process
Hi All-- Rowdy wrote: FreeDB (CD database) stores one file per CD in one directory per category. The misc category/directory on my FreeBSD 5.3 system currently contains around 481,571 small files. The rock directory/category contains 449,208 files. As some have said, ls is *very* slow on these directories, but otherwise there don't seem to be any problems. I assume you're all using Linux. The GNU version of ls does two things that slow it down. The System V and BSD versions were pretty much identical, in that they processed the argv array in whatever order the shell passed it in. The GNU version re-orders the argv array and stuffs all the arguments into a queue. No big deal if you're just doing ls, but for ls multiple directory names it can slow it down for large argv[n] and/or recursive/deep ls. The other thing it does different from SysV/BSD ls is that it provides for default options in an environment variable. If those env settings specify to always use color, that will slow directory processing _way_ down, identically to the -F option. That's because the color and -F options _require_ a stat() on each and every file in the directory. Standard ls with no options (or old SysV/BSD ls that came with no options) works nearly as fast as os.listdir() in Python, because it doesn't require a stat(). The only thing faster, from a shell user's viewpoint, is 'echo *'. That may not be much help;-) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
Hi All-- Larry Bates wrote: Secondly, Python nudges me into writing better (easier to maintain and clearer to understand) code by influencing me towards splitting my code into smaller functions/classes. If I find myself with more than 3-4 levels of indentation, I probably need to move some of the lower level code into a function or a class anyway (I actually ran into this this very morning). Some might interpret this as a negative, I don't. I find that a lot of programmers put WAY too much code into single individual modules (main programs, functions) for their own good. Agreed. Any method where you have to scroll to figure out what matches what is _too big_. This principle holds true for any language. Keeping to that aesthetic forces you to modularize your code and often generates far more flexible functions/methods than you would have any right to expect otherwise. As far as grouping by indentation goes, it's why I fell in love with Python in the first place. Braces and so on are just extraneous cruft as far as I'm concerned. It's the difference between Vietnamese verbs and Latin verbs;-) Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: C type buffer copy
Hi All--
def testCode(data):
buf=data[:]
# and I hope you're going to do something with buf,
# because otherwise this function's a bit of a waste;-)
[EMAIL PROTECTED] wrote:
Hello,
How does Python deal with C type memory buffers. Does Python return
everything as an object irrespective of the data type?
Here's what i am trying to achieve?
testCode(unsigned char buf, unsigned long len)
{
unsigned long data=0x0;
while (len--)
{
*buf++ = (unsigned char)data++
}
}
What's the best way to deal with this in python?
Metta,
Ivan
--
Ivan Van Laningham
God N Locomotive Works
http://www.andi-holmes.com/
http://www.foretec.com/python/workshops/1998-11/proceedings.html
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python scope is too complicated
Hi All-- Dan Bishop wrote: In Python, there are only two scopes. The global and the local. The global scope is a dictionary while the local, in the case of a function is extremely fast. There are no other scopes. This isn't true anymore, now that generator comprehensions have been added to the language. x = 17 sum(x for x in xrange(101)) 5050 x 17 The equivalent in list comprehensions which currently allows the x to leak out into its containing scope is going away soon. Will that be another scope? Or are generator and list comprehensions only one scope? Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Pre-PEP: Dictionary accumulator methods
Hi All-- Raymond Hettinger wrote: [Michele Simionato] +1 for inc instead of count. Any takers for tally()? Sure. Given the reasons for avoiding add(), tally()'s a much better choice than count(). What about d.tally(key,0) then? Deleting the key as was suggested by Michael Spencer seems non-intuitive to me. Just my 2 Eurocents, I raise you by a ruble and a pound ;-) hardly-anything-is-worth-less-than-vietnamese-dong-ly y'rs, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.andi-holmes.com/ http://www.foretec.com/python/workshops/1998-11/proceedings.html Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
Re: Pre-PEP: Dictionary accumulator methods
Hi All--
Raymond Hettinger wrote:
Separating the two cases is essential. Also, the wording should contain
strong
cues that remind you of addition and of building a list.
For the first, how about addup():
d = {}
for word in text.split():
d.addup(word)
I still prefer tally(), despite perceived political connotations.
They're only connotations, after all, and tally() comprises both
positive and negative incrementing, whereas add() and addup() will tease
users into thinking they are only for incrementing.
What about adding another method, setincrement()?
d={}
d.setincrement(-1)
for word in text.split():
d.tally(word,1)
if word.lower() in [a,an,the]:
d.tally(word)
Not that there's any real utility in that.
Metta,
Ivan
--
Ivan Van Laningham
God N Locomotive Works
http://www.pauahtun.org/
http://www.andi-holmes.com/
Army Signal Corps: Cu Chi, Class of '70
Author: Teach Yourself Python in 24 Hours
--
http://mail.python.org/mailman/listinfo/python-list
Re: Pre-PEP: Dictionary accumulator methods
Hi All-- Maybe I'm not getting it, but I'd think a better name for count would be add. As in d.add(key) d.add(key,-1) d.add(key,399) etc. Raymond Hettinger wrote: I would like to get everyone's thoughts on two new dictionary methods: def count(self, value, qty=1): try: self[key] += qty except KeyError: self[key] = qty There is no existing add() method for dictionaries. Given the name change, I'd like to see it. Metta, Ivan -- Ivan Van Laningham God N Locomotive Works http://www.pauahtun.org/ http://www.andi-holmes.com/ Army Signal Corps: Cu Chi, Class of '70 Author: Teach Yourself Python in 24 Hours -- http://mail.python.org/mailman/listinfo/python-list
