🌐 Mailman 3 March 2000 - Python-list - python.org

win32all-any: Installer annoyance
by krodgers＠ryanaero.com March 1, 2000

March 1, 2000

Although I dearly love Mark Hammond's Win32 extensions for Python, there is one thing about them that I most definitely do not love: When you install them, they register PythonWin as the handler for the "Edit" action defined in Explorer for all .py and .pyw files. I am one of those people who use XEmacs under Win32, and have defined the "Edit" action to load the .py/.pyw file in XEmacs. Every time I install an new version of the Win32 extensions, my XEmacs "Edit" functionality gets wiped out and I have to reassociate the "Edit" action with XEmacs. How about a win32all installer checkbox giving the user the option of registering PythonWin as the "Edit" handler, to help those of us who like and use different editors? (e.g., Idle may be an option, or even PythonWorks . . .) -- Kevin Rodgers Northrop Grumman Ryan Aeronautical krodgers(a)ryanaero.com "Snakes. Why did it have to be snakes?" -- Indiana Jones Sent via Deja.com http://www.deja.com/ Before you buy.

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no pyc file
by Samuel Nicolary March 1, 2000

March 1, 2000

Is there a reason why a pyc file would not be created upon execution of my script? It is a simple text parcing application. Thanks -- Sam Nicolary Systems Admin - SOS - ISC University of Pennsylvania - Graduate School of Education 3700 Walnut Street Philadelphia, PA 19104 (215) 573-5423 Fax - (215) 573-2119

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MySQLmodule synthax error
by Olivier Roche March 1, 2000

March 1, 2000

Hi, I have just download the last version of MySQLmodule which compile with MySQL 3.22.30, but i have still a slight problem with the synthax. I would like to create several tables in a loop, but i raise a MySQLmodule error. Here is the failed script: for lines in TextFile('/DB_scripts/complex.txt'): code = split(lines)[0] dock = code + '-dock' if dock in tables: DBH['drop table ' + dock] ## Create the table DBH["create table %s (Structure_ID VARCHAR(20) NOT NULL, \ Rms REAL NOT NULL, Energy_charmm REAL NOT NULL)" % dock] MySQL.error: You have an error in your SQL syntax near '-dock (Structure_ID VARCHAR(20) NOT NULL, Rms REAL NOT NULL, Energy_charmm REAL' at line 1 I try also: DBH["create table" + dock + " (Structure_ID VARCHAR(20) NOT NULL, \ Rms REAL NOT NULL, Energy_charmm REAL NOT NULL)"] Same error. Any advices will be very welcome. Thank you Olivier

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CGI and odbc
by melgin＠my-deja.com March 1, 2000

March 1, 2000

Hi, I am trying to use odbc in a script to pull data from a database and then publish it to a web page. Although I am able to connect to the database and gather the information, when I try to call the script from a web page an error occurs stating that it cannot import the dbi, odbc module, as if it isn't there. I've also tried using my own scripts within a cgi script and the same error occurs. Does anyone have any ideas as to what this is and what I can do about it???? Many Thanks Matt Elgin Sent via Deja.com http://www.deja.com/ Before you buy.

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another easy (im sure) newbie question
by Shaun Hogan March 1, 2000

March 1, 2000

ok i started learning python a week ago. ive followed Guido's tutorial and another one, i have a good grasp of everthing up to Classes, now the example in the tutorial 9.3.2: class MyClass: "A simple example class" i = 12345 def f(x): return 'hello world' is where i am at. the tutorial says "MyClass.i and MyClass.f are valid attribute references, returning an integer and a function object," MyClass.i returns "12345" fine...but MyClass.f gives me "<unbound method MyClass.f>" how do i get it to return "hello world" or whatever its supposed to do? also what does the error message "TypeError: unbound method must be called with class instance 1st argument" mean??? simple answers im sure, but its got me stuck. any help would be great thanks Shaun

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Blowfish in Python?
by Markus Stenberg March 1, 2000

March 1, 2000

(And no, I'm not talking about real fishes being eaten by Pythons here) I spent few hours last weekend implementing Blowfish block encryption algorithm in Python (and several digest algorithms and other stuff, but that's not the point). In digest algorithms, speed was horrible, but I expected it to be; I didn't really mind it. In Blowfish, however, on ia-32 platform and tolerably fast CPU, speed was horrendous. I think the main reason was the fact that I had to use _long ints_ for calculations, as the normal ints are signed, and apparently the bitwise operators do not work as advertised when bit32 is set (=number is negative). Or that's my theory anyway - my implementation worked with long's and did not work with ints. But I'm digressing. The query I was intending to ask was this: Has anyone actually succeeded in producing a _fast_ pure-Python Blowfish implementation? C implementations routinely go to megabytes/second level; my Python-with-longs implementation was kilobytes/second, to be precise, 2-10k/s depending on the machine. For this application to be feasible, there cannot be any C-modules, so you can forget about "write it in C and use extension module" or "use that module <foo>, it's implemented in C, dummy!". I have done both in past, but this should be _very_ portable implementation, and partially on platforms I don't even have compiler on. -Markus -- /\ /\ /()\ .. Something _is_ out there .. /()\ /____\ /____\ [Not neccessarily anything as friendly as the Illuminati, either ;)]

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Win32 KeyboardInterrupt
by Chris Withers March 1, 2000

March 1, 2000

Hi, I'm trying to use the followingcode to trap a keyboard interrupt: try: if __name__ =='__main__': Worker(sys.argv) except KeyboardInterrupt: print "Saving state..." It works fine under linux but under Windows NT 4.0: If I press ctrl-c, nothing happens, If I press ctrl-break, I get dumpen to the command prompt by the state saving doesn't get executed... Any ideas? Chris PS: The KeyboardInterrupt key on Win32 is ctrl-c, right? ;-)

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Re: Splitting comp.lang.python
by Gerrit Holl March 1, 2000

March 1, 2000

<quote name="Cameron Laird" date="951887760" email="claird(a)starbase.neosoft.com"> > In article <20000301105629.A4323(a)nl.linux.org>, <gerrit(a)nl.linux.org> wrote: > >Hello, > > > >Quoting Fredrik Lundh <effbot(a)telia.com>, > >> this month, comp.lang.python has seen nearly > >> 50% more posts than any month before: > >> > >> http://www.egroups.com/group/python-list/info.html > >> http://starship.python.net/crew/just/FindMailStats/ > > > >4000 messages in 29 days is a lot. it's 138 messages a day. Previous > >discussions on splitting c.l.py always ended up in jokes and just > >disappeared; I want to resurrect an informal discussion on wheter > >to split the newsgroup or not; an RFD should be posted, of course, > >but IANAL: does anyone have time to create an RFD? > > > > I propose to split c.l.py in a technical part and a non-technical part. > . > . > . > No, no one has time to create an RFD. > > I speak from experience. Newsgroup creation requires > more commitment, and even passion, than you'd expect. I know it requires a lot of commitment. That's why I asked if anyone having enough passion to want to take the time; I don't understand how you can speak for everyone. > Only someone not discouraged by my discouraging words > will have the perseverance required to endure the pro- > cess. I understand. > By the way, Gerritt, you and Fredrik and I seem to be > running into each other a lot. I noticed Fredrik and I ran into each other a lot, but I haven't noticed your part in this. > The most typical pattern is that you say something > enthusiastic, and then effbot and I grumble at you. I already suggested a few time that this might have to do something with my lack of English; I try to say something, but it doesn't "reach" you as I mean it. > That's what I (and he?) > will do now: I don't understand your proposal. If > it's to spawn a comp.lang.python.advocacy, well, I > think that's worth discussing. That's exactly what I mean. > If the suggestion is > that speculations about timbot's ontology and book re- > views be labeled "non-technical" ... I just don't see > that as viable. What do you imagine by the charter of such a potential newsgroup? > I've got loads of informed opinions about newsgroup > dynamics. If people truly want to pursue this, and > none of the other old-timers jump in, I'll write up > some of what I've seen. I don't understand what you're saying here. </quote> regards, Gerrit. -- -----BEGIN GEEK CODE BLOCK----- http://www.geekcode.com Version: 3.12 GCS dpu s-:-- a14 C++++>$ UL++ P--- L+++ E--- W++ N o? K? w--- !O !M !V PS+ PE? Y? PGP-- t- 5? X? R- tv- b+(++) DI D+ G++ !e !r !y -----END GEEK CODE BLOCK-----

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Numpy and native Blas
by Stan Pawlukiewicz March 1, 2000

March 1, 2000

Hi, Has anyone built a recent version of Numpy (15 or 15.1) on top of a native Blas, in particular, the atlas blas routines under Linux? Thanks in Advance. Stan P.

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RE: Scanning folders
by Pieter Claerhout March 1, 2000

March 1, 2000

No solutioins that works on PC/Mac/Unix?? Pieter -----Original Message----- From: Darrell [mailto:darrell@dorb.com] Sent: Wednesday, March 01, 2000 4:06 AM To: Pieter Claerhout; python-list(a)python.org Subject: Re: Scanning folders If your talking about NT then give this a try. http://www.dorb.com/darrell/win32WorkSvr/makeThumbsDG.py def main(): """ Use events to avoid polling. A sleep is used to give most files a chance to finish being writen. Sort of a hack and might not be needed. The notification event LAST_WRITE seems to trigger at the start and end of writing. So a single file will trigger this twice. """ hnd=win32file.FindFirstChangeNotification\ (os.path.abspath('.')+os.sep+'incoming'\ ,0, winnt.FILE_NOTIFY_CHANGE_LAST_WRITE ) while 1: int = win32event.WaitForSingleObject( hnd, -1) # Try to give the file time to finish writing time.sleep(2) print 'run' try: passed, failed, skipped = makeThumbNails() except: if '-d' in sys.argv: traceback.print_exc() raise ThumbNailException win32file.FindNextChangeNotification(hnd) ----- Original Message ----- From: "Pieter Claerhout" <PClaerhout(a)CREO.BE> To: <python-list(a)python.org> Sent: Monday, February 28, 2000 3:35 AM Subject: Scanning folders > Hello, > > what is the best and fastest way to scan a whole list of folders > to see if something is added or not. Please note that this should > also work for more than 1000 folders (and it shouldn't slow down > the system too much). > > Kind regards, > > > Pieter > > -- > http://www.python.org/mailman/listinfo/python-list >

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