automatic html generation for documentation?
I plan on writing some documentation that will consist of blocks of commentary with interspersed snippets of syntax-colored Python code and the occaisional image. Does anyone know of a package that will take a high level description of what I just described and auto-generate clean-looking web pages, including syntax coloring? I'm already using epydoc for API reference generation; what I'm looking for here is just something to help out with the narrative so I don't have to spend lots of time fiddling with HTML. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python vs. Lisp -- please explain
[EMAIL PROTECTED] writes: But Lisp isn't dynamically typed exactly the way Python is. Python documents ways to manipulate the internals of objects at runtime. It is possible to add, change or delete methods and slots by directly changing the hashtable they're stored in. While CLOS does permit a certain amount of runtime redefinition, it is not as completely free wheeling and unpredicatable. Although CLOS is now part of the Lisp standard I haven't generally thought of it as describing the language semantics. It's more like a library routine. Python's standard library generally doesn't provide documented ways of mucking around with the internal structure of library classes. CLOS (or something close to it) similarly can and has been implemented as a Lisp macro package independent from the rest of the Lisp system. -- http://mail.python.org/mailman/listinfo/python-list
Re: ls files -- list packer
cool i just tried:
import os
snd_filelist = [f for f in os.listdir('/Users/foo/snd') if
f.endswith('.aif')]
and it worked! and will take a huge bite out of my big script ... which
i make by doing an ls
in the terminal and editing (boo hoo)
one one lc and one import!
cool..
that other sillyness i mentioned is not strickly required ... just
dreaming but i know involves some kind of os walk type thing prolly ...
meanwhile this is so exciting!
Thank you
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Re: Python vs. Lisp -- please explain
Hallöchen! Peter Mayne [EMAIL PROTECTED] writes: Torsten Bronger wrote: Another example: is Java the bytecode, which is compiled from Java the language, interpreted or not? Even when the HotSpot JIT cuts in? It is partly interpreted and partly compiled. That's why it's faster than Python. But Python is partly interpreted and partly compiled too It's byte-compiled for a VM, that's not the same, and you know it. Do you mean that Python is byte-compiled for a VM, and not Java, or vice-versa? I mean Python is byte-compiled for a VM. I agree that the distinction between interpreted and compiled languages is not as clear as between positiv and negative numbers, however, neither anybody has claimed that so far, nor it is necessary. It must be *practical*, i.e. a useful rule of thumb for decision making. If you really know all implications (pros and cons) of interpreted languages, it's are very useful rule in my opinion. So what kind of practical decisions are you trying to make? Which language should I use for my project. What kind of implications are useful to you? Speed, ease of programming, necessity to learn/use a secondary language, issues with distributing, portability. Tschö, Torsten. -- Torsten Bronger, aquisgrana, europa vetusICQ 264-296-646 -- http://mail.python.org/mailman/listinfo/python-list
Re: ls files -- list packer
gosh i could even use other string methods like startswith to take all
the files in a given directory which i have organized with a prefix and
have them stuffed in different lists ... i think ...
snd_filelist = [f for f in os.listdir('/Users/foo/snd') if
f.endswith('.aif') f.startswith('r')]
\m/ (.) \m/
yeah!
runnin' to the interpreta now...
--
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Re: regular expresson for Unix and Dos Lineendings wanted
On Thu, 23 Feb 2006 14:46:20 +0100, Franz Steinhaeusler [EMAIL PROTECTED] wrote: Hello, I need a regularexpression, which trims trailing whitespaces. While with unix line endings, it works; but not with Window (Dos) CRLF's: Thank you all for the replies. But I still don't have a solution. Of course with more lines it is possible, but it would be fine to have a oneliner. -- Franz Steinhaeusler -- http://mail.python.org/mailman/listinfo/python-list
Re: a little more help with python server-side scripting
John Salerno wrote: Ok, seems like the verdict is that the server doesn't have mod_python nor does it detect the .psp extension. It can, however, detect the .py extension. But does this mean I can simply include Python code in my HTML files, and then give my HTML files a .py extension? I don't know how to test this because I don't know how to write inline code yet. Is it something like: No, you can't do that. From your descriptions, it seems that Python is set up as a CGI language, just as one would use Perl etc. This means that if you have an URL ending with x.py, the web server will do these things when you request this URL from the server: 1. Set up a number of environment variables which are useful for the python script it will call. Very important if the URL was invoked from an HTML form, which I don't suspect will happen on your site. 2. Invoke Python with your script. Basically it should call python.exe -u x.py 3. Read the data that x.py sends to stdout, e.g. print statements etc. Provided that this output looks ok, it will send it to the browser, otherwise it will typically send ERROR 500 (internal server error) instead. You were given a CGI script already that printed out environment variables. I got the impression that you tried that out. If you set the environment variables shown by that CGI script using the SET command at a Windows command prompt, and then execute your python script at that command prompt, it has to print something like Content-type: text/html html blah blah whatever /html There is no magic beyond this. Try renaming an HTML file to .py and invoke Python with that. It will just say SyntaxError! The change isn't big though! You just need to make the HTML content into a big string (surround it with ) and print the content-type line, an empty line and this big string, and you have a start. You have already been provided with all the information you need. I think you need to look closely at the information Paul and several others have given you instead of just asking more questions, and really start using it. You won't get anywhere otherwise. The other option is ASP. You have been given information about that already. Be aware that ASP does not imply VBScript. You can use Python in ASP as long as that's enabled. It seems to be exactly what you are asking for, so I don't understand why you seem to reject it. Don't you like the file name endings? -- http://mail.python.org/mailman/listinfo/python-list
Re: Temporary Variable
On Fri, 24 Feb 2006 00:24:25 +, Jeffrey Schwab wrote: Steven D'Aprano wrote: On Thu, 23 Feb 2006 12:05:59 -0800, darthbob88 wrote: My comments inserted inline. #!/usr/bin/python #simple guessing game, with numbers import random spam = random.randint(1, 100) It is bad programming practice to give variables uninformative joke names. Lighten up. This isn't the middle of a 100-KLOC corporate monstrosity, it's a 1/2-page usenet post. The original poster is also a newbie who was having trouble with the difference between strings and ints. If Guido called a variable spam, I wouldn't presume to correct him. When Newbie McNew does it, it might very well be because he doesn't know any better. Just out of curiosity, when do you think is the right time to begin teaching programmers good practice from bad? Before or after they've learnt bad habits? -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expresson for Unix and Dos Lineendings wanted
Franz Steinhaeusler wrote: On Thu, 23 Feb 2006 14:46:20 +0100, Franz Steinhaeusler [EMAIL PROTECTED] wrote: Hello, I need a regularexpression, which trims trailing whitespaces. While with unix line endings, it works; but not with Window (Dos) CRLF's: Thank you all for the replies. But I still don't have a solution. Of course with more lines it is possible, but it would be fine to have a oneliner. Then I clearly don't understand your problem... it seems we gave you several ways of skinning your cat... but none of them 'worked'? I find that hard to believe... perhaps you can re-state you problem or show us your more than one line solution...(so that we might learn from it) Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: spaces at ends of filenames or directory names on Win32
On Thu, 23 Feb 2006 17:49:31 -0600, Larry Bates wrote: Steven D'Aprano wrote: On Thu, 23 Feb 2006 14:30:22 -0600, Larry Bates wrote: How about not naming files with leading and trailing spaces on the Mac? Seems like a bad habit that needs breaking ;-). Why is it a bad habit? Because *Windows* is primitive enough that it can't cope with leading and trailing spaces? I don't see why Windows' lack is Mac users' problem. It is a problem because the poster says it is a problem for him. Absolutely. Now read my statement again. Why is it a problem for the Mac _users_? I use Linux, Windows and Mac, in varying amounts. I'm fully aware of the problems of transferring files from one platform to another. When it affects _me_, I may choose to dumb down to the lowest common denominator so as to save _me_ problems. But wearing my user hat, if a developer came to me telling me I had to avoid using features on my platform of choice in order to make his life easier, I'd say to him So why exactly are we paying you the big bucks? That's your problem, you solve it. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Temporary Variable
Steven D'Aprano wrote: Just out of curiosity, when do you think is the right time to begin teaching programmers good practice from bad? Before or after they've learnt bad habits? When you have authority over the coding guideline. Naming things is not something limited to programming and most people know the importance of choosing the appropriate ones. If on the other hand some names have been chosen that have actual side effect(in python program), like builtin function names, it is appropriate to point that out, though I don't see that case here. -- http://mail.python.org/mailman/listinfo/python-list
Re: PYTHONPATH?
Dr. Pastor wrote: Several Documents about Python refer to PYTHONPATH. I could not find such variable. (Python 2.4.2, IDLE 1.1.2, Windows XP) How should/could I nominate a Directory to be the local Directory? Thanks for any guidance. It's a so called environment-variable. You can set these in some obscure windows dialog in the system-preferences on a per-system or per-user base. Or you start using cygwin (lots of good other reasons for that), and do export PYTHONPATH=/whatever Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
On Thu, 23 Feb 2006 20:41:52 -0600, Terry Hancock wrote: On Fri, 24 Feb 2006 09:14:53 +1100 Steven D'Aprano [EMAIL PROTECTED] wrote: There are *reasons* why Python discourages functions with side-effects. Side-effects make your code hard to test and harder to debug. You of course meant expressions with side-effects. Python is pretty good at making functions with side-effects. At least it is if you want them. ;-) Yes, of course I meant that. However, functions with side-effects are also discouraged. Unless side-effects are the correct way to do whatever it is you are trying to do, in which case they are encouraged. *wink* -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
On Thu, 23 Feb 2006 16:49:09 -0800, bonono wrote: Steven D'Aprano wrote: On Thu, 23 Feb 2006 12:04:38 -0700, Bob Greschke wrote: try: i = a.find(3) print It's here: , i except NotFound: print No 3's here Nuts. I guess you're right. It wouldn't be proper. Things are added or proposed every day for Python that I can't even pronounce, but a simple 'if (I = a.find(3)) != -1' isn't allowed. Huh. It might be time to go back to BASIC. :) There are *reasons* why Python discourages functions with side-effects. Side-effects make your code hard to test and harder to debug. test.index(a) Traceback (most recent call last): File pyshell#0, line 1, in -toplevel- test.index(a) ValueError: substring not found test.find(a) -1 Did you have a point? In case you haven't been following the entire thread, the original bit of code above (the try block using the find method) wasn't mine. It just happened to be quoted in my post. Now that's a Python wart: using for the prompt for interactive sessions. It makes it ambiguous when posting code in email or newsgroups, especially once the code gets quoted a few times. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
python-list/python-dev quoting style
Does anyone have a script to convert more conventional USENET quoting style like this: John wrote: Jacob Jingleheimer Schmidt [EMAIL PROTECTED] wrote in message-id gratuitous-detail on 29 February 2004: Lambda is the best Python feature ever! I disagree. to the commonly used python-dev/python-list style like this: [Jacob Jingleheimer Schmidt] Lambda is the best Python feature ever! [John] I disagree. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
Exception-handling
I have come over a strange problem regarding exceptions This is my code: try: #some operation except Exception, info: #some message except: #?? When executing my code, I get to the last block here. This I find rather strange, because I thought Exception would catch all exceptions. But this is obviously not the case here. What is this, and how can I get a hold of what causes the exception? Thanks! -- Har du et kjøleskap, har du en TV så har du alt du trenger for å leve -Jokke Valentinerne -- http://mail.python.org/mailman/listinfo/python-list
Re: MySQLdb slow on MySQL 5
[EMAIL PROTECTED] wrote: I'm not calling COMMIT at all. Then you must be using autocommit if your records stay in the table. An DB-API 2.0 compliant adapter should turn off autocommit by default! Does MyISAM even support proper commit handling? Oh well, Oracle will probably kill MySQL soon. Good! I'd use a real database system. It hurts my Swedish heart that one of the best known Swedish software products is so bad. It's one thing for some more inventive product like Skype to pave its own path, but to build something called an SQL database with such a complete disregard of the SQL standard seems like Microsoft in the 80's or 90's to me. If you must have a Swedish database server, use Mimer, otherwise PostgreSQL 8.2 is a good open source alternative, and all the major vendors have gratis versions now. Oracle is a resource hog, and a pain to download and install though. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unexpected timing results
Steven D'Aprano wrote: It looks like the time function under Linux at least is very slow. Perhaps you should try doing the same thing in C. Then you can see whether the problem is in the wrapper or in the system call. -- http://mail.python.org/mailman/listinfo/python-list
Re: why don't many test frameworks support file-output?
kanchy kang wrote: i browsed the following frameworks briefly: nose, OOBTest, testosterone, py.test, Sancho ... and found out they do support imediate screen-output only. Look at TextTest. -- http://mail.python.org/mailman/listinfo/python-list
Re: datetime iso8601 string input
Rubic wrote: I can understand why datetime can't handle arbitrary string inputs, but why not just simple iso8601 format -- i.e. the default output format for datetime? Have you actually read the ISO 8601 standard? If you have, you would know that parsing valid ISO 8601 is fairly close to handling arbitrary strings... I suspect this absence is quite deliberate. There are so many possible string formats that are used and prefered in different situations, and various loop holes with time zones and DST etc, that it's probably better to let the programmer take full responsibility over this instead of providing a 10% solution. ater all, it isn't very hard to use for instance time.strptime() with some appropriate format, and build datetime objects from that. Then the programmer is in control. -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
Steven D'Aprano wrote: On Thu, 23 Feb 2006 16:49:09 -0800, bonono wrote: Steven D'Aprano wrote: On Thu, 23 Feb 2006 12:04:38 -0700, Bob Greschke wrote: try: i = a.find(3) print It's here: , i except NotFound: print No 3's here Nuts. I guess you're right. It wouldn't be proper. Things are added or proposed every day for Python that I can't even pronounce, but a simple 'if (I = a.find(3)) != -1' isn't allowed. Huh. It might be time to go back to BASIC. :) There are *reasons* why Python discourages functions with side-effects. Side-effects make your code hard to test and harder to debug. test.index(a) Traceback (most recent call last): File pyshell#0, line 1, in -toplevel- test.index(a) ValueError: substring not found test.find(a) -1 Did you have a point? It was about your side-effect talk, if you failed to see it, that is fine. BTW, it seems that the term side-effect of function used is a bit different from my understanding of how it is in general used in this field. -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception-handling
Odd-R. wrote: I have come over a strange problem regarding exceptions This is my code: try: #some operation except Exception, info: #some message except: #?? When executing my code, I get to the last block here. This I find rather strange, because I thought Exception would catch all exceptions. But this is obviously not the case here. What is this, and how can I get a hold of what causes the exception? You can throw everything as an exception. I _think_ that is frowned upon these days, but it is there so it will happen. However, you can use import sys try: raise foo except: print sys.exc_info()[1] to get a hold on what's being caught by the exception handler. Diez -- http://mail.python.org/mailman/listinfo/python-list
How to send an email with non-ascii characters in Python
Can anyone give an example how to send email with non-ascii characters( both in subject and body). I would like to use windows-1250 code page Thank you L.B. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unexpected timing results
On Fri, 24 Feb 2006 10:11:18 +0100, Magnus Lycka wrote: Steven D'Aprano wrote: It looks like the time function under Linux at least is very slow. Perhaps you should try doing the same thing in C. Then you can see whether the problem is in the wrapper or in the system call. Good idea. Now, has anyone got a copy of Learning C for Dummies I can borrow? *chagrined smile* -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: ls files -- list packer
Try using The Path module: http://www.jorendorff.com/articles/python/path/. I wrote a little script to traverse a directory structure which you could use. (You just pass a function to it and it runs it on each file in the directory. You want it to run on each directory instead, so I've changed it a little for you). import path def traverse(directory, function, depth=0, onfiles=True, ondirs=False): thedir = path.path(directory) if onfiles == True: for item in thedir.files(): function(item, depth) if ondirs == True: for item in thedir.dirs(): function(item, depth) for item in thedir.dirs(): traverse(item, function, depth+1, onfiles, ondirs) You can use it like so: def printaifs(thedir, depth): print thedir.name for item in thedir.files(*.aif'): print \t + item traverse(r/Users/foo/snd, printaifs, onfiles=False, ondirs=True) NB: I've quickly adapted this whilst away from an installation of Python, so it is untested, but should mostly work, unless there's a typo. Hope this helps at least a little... Ed PS The Python Tutor list tends to be a much better place to discuss this kind of stuff. If you haven't yet encountered Kent and Alan's help, then you have a joyous experience ahead of you. -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception-handling
Odd-R.: I thought Exception would catch all exceptions. Try this: import sys try: pass # your code here except: e = sys.exc_value() Either to catch everything, or to get a hold on e. -- René Pijlman -- http://mail.python.org/mailman/listinfo/python-list
Re: How to send an email with non-ascii characters in Python
Sybren, and can give me an example of Python code that can send such email?? -- http://mail.python.org/mailman/listinfo/python-list
Re: Unexpected timing results
Steven D'Aprano schreef:
On Fri, 24 Feb 2006 10:11:18 +0100, Magnus Lycka wrote:
Steven D'Aprano wrote:
It looks like the time function under Linux at least is very slow.
Perhaps you should try doing the same thing in C.
Then you can see whether the problem is in the
wrapper or in the system call.
Good idea.
Now, has anyone got a copy of Learning C for Dummies I can borrow?
*chagrined smile*
First, for reference, the Python version on the machine I used for
testing (Debian 3.1, P4 3GHz):
timer1: 0.36007809639
timer2: 3.18800234795
On Windows the difference is much less.
C (compiled with gcc 3.3.5 without optimizations) (see below for the code):
timer1: 0.000603
timer2: 2.624557
I think it looks like the problem is in the system call.
C code:
#include stdio.h
#include sys/time.h
#include time.h
void func(void)
{
}
double gettime()
{
struct timeval tv;
gettimeofday(tv, NULL);
return tv.tv_sec + tv.tv_usec/1e6;
}
double timer1(void)
{
double t0, t1;
int i;
t0 = gettime();
for (i = 0; i 10; ++i)
{
func();
}
t1 = gettime();
return t1 - t0;
}
double timer2(void)
{
int i;
double t = 0.0;
double t0, t1;
for (i = 0; i 100; ++i)
{
t0 = gettime();
func();
t1 = gettime();
t += t1 - t0;
}
return t;
}
int main(void)
{
printf(timer1: %lf\n, timer1());
printf(timer2: %lf\n, timer2());
return 0;
}
--
If I have been able to see further, it was only because I stood
on the shoulders of giants. -- Isaac Newton
Roel Schroeven
--
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Re: Temporary Variable
On Fri, 24 Feb 2006 01:50:40 -0800, bonono wrote: Steven D'Aprano wrote: Just out of curiosity, when do you think is the right time to begin teaching programmers good practice from bad? Before or after they've learnt bad habits? When you have authority over the coding guideline. By that logic, only senators and other government ministers are allowed to tell people Committing murder is strongly discouraged, don't do it, because only they have authority over what is made law and what is not. I don't need to be Guido van Rossum to know that calling a dict myFloat is a terrible idea. Your suggestion that one needs somehow to be authorized (by whom?) before you are allowed to point out poor programming practice not only goes against the entire community ethos of comp.lang.python, but is offensive in the extreme. Naming things is not something limited to programming and most people know the importance of choosing the appropriate ones. Most people. Let's not mention the Chevy Nova (it won't go) then, will we? Car manufacturers seem to have a talent for not just choosing bad names, but for getting them horribly, horribly wrong. I suggest you google on Opel Ascona, Buick LaCrosse, Honda Fitta, Mitsubishi Pajero, and the Mazda LaPuta, to discover just why those cars went over like lead balloons in places like Spain, Finland and Quebec. But I digress. What of those that don't know the importance of choosing appropriate names? We should just let them shoot themselves in the foot, even when it is obvious to Blind Freddy that they are struggling with some really basic concepts, and that they probably don't even know the gun is loaded? If on the other hand some names have been chosen that have actual side effect(in python program), like builtin function names, it is appropriate to point that out, By your earlier logic, that should only be permitted to those who have authority to create builtins, certainly not the likes of you and me. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: PYTHONPATH?
Dr. Pastor wrote:
Several Documents about Python refer to PYTHONPATH.
If you need to import libraries into Python, that don't reside in the
standard locations in your Python installation, you need to define
a PYTHONPATH environment variable in the operating system, which
points out this directory.
Defining this is done in the same way as defining PATH etc.
I could not find such variable.
Do you need it for anything?
(Python 2.4.2, IDLE 1.1.2, Windows XP)
How should/could I nominate a Directory to be the local Directory?
import os
os.chdir('c:/somedir')
Another way is to start python from there, e.g. from the
command prompt (nothing beats a command prompt!) you would do:
cd some\local\directory
python myscript.py (... or just python ...)
Note that backslash in a Python string literal denotes an escape
sequence. In Python 'c:\temp' means 'c' ':' tab 'e' 'm' 'p', since
'\t' is the escape sequence for a tab. You can use 'c:/temp' (ok
for Windows APIs) r'c:\temp' (r for raw string, i.e. don't use
escape sequences) or 'c:\\temp' (\\ is the escape sequence for
backslash).
Also note, that the way to use libraries from an arbitrary
directory without setting PYTHONPATH, is not with os.chdir,
but by doing this:
import sys
sys.path.append('c:/somedir')
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Re: ls files -- list packer
kpp9c wrote:
that other sillyness i mentioned is not strickly required ... just
dreaming but i know involves some kind of os walk type thing prolly ...
os.walk isn't exactly rocket science... Something similar to this?
import os
for dir, dirs, files in os.walk('.'):
... txt_files = [x for x in files if x.endswith('.txt')]
... if txt_files:
... print dir, txt_files
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Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote:
Yes, I'm doing this:
.
oldtime=time.time()
time.sleep(1)
newtime=time.time()
dt=newtime-oldtime
if dt 2:
print 'dt=',dt,' time=',time.strftime('%Y_%m_%d_%Hh_%Mm_%Ss')
Its happening roughly 4 times a day total on our 20 machines, ie about
once every 5 days on a given machine.
So, it happens roughly one time out of 400 000 sleeps?
With an operating system such as Windows, this is
probably something you can expect to happen, although
I'm surprised if such long lag times as 200 s are typical.
If you need real time characteristics, you should
probably use a real time operating system, not Windows.
The operating system can schedule jobs as it likes,
and your sleep is obviously just the right time to hand
off the CPU to some other process.
Of course, if something takes 200 seconds, it's typically
because some process is waiting for IO, and if it's waiting
for IO, the CPU should be used by other processes, such as
yours.
Perhaps you can use the event log or some performance
measurement tools to check if something else on the system
happens to coincide with your long delays.
--
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Re: A C-like if statement
On Fri, 24 Feb 2006 02:02:02 -0800, bonono wrote: test.index(a) Traceback (most recent call last): File pyshell#0, line 1, in -toplevel- test.index(a) ValueError: substring not found test.find(a) -1 Did you have a point? It was about your side-effect talk, if you failed to see it, that is fine. BTW, it seems that the term side-effect of function used is a bit different from my understanding of how it is in general used in this field. What side effect? Returning magic values (e.g. -1 to indicate not found) is not a side-effect in any terminology I've come across. A side-effect would be if s.index(substr) not only returned the index as promised, but also (say) appended substr to a list somewhere. Side-effects aren't always bad (import, for example, does all its work by side-effect). But they are generally frowned upon, and in functional languages they are verboten. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Unexpected timing results
On Fri, 24 Feb 2006 10:51:09 +, Roel Schroeven wrote: [snip] I think it looks like the problem is in the system call. Thank you Roel for going the extra mile. I appreciate the unexpected bonus. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: PYTHONPATH?
Said obscure dialog is here: My Computer Properties Advanced (tab) Environment Variables You probably want a new system variable. You can check the value by starting a new terminal window and typing: echo %PYTHONPATH% Cheers Tombo Diez B. Roggisch wrote: Dr. Pastor wrote: Several Documents about Python refer to PYTHONPATH. I could not find such variable. (Python 2.4.2, IDLE 1.1.2, Windows XP) How should/could I nominate a Directory to be the local Directory? Thanks for any guidance. It's a so called environment-variable. You can set these in some obscure windows dialog in the system-preferences on a per-system or per-user base. Or you start using cygwin (lots of good other reasons for that), and do export PYTHONPATH=/whatever Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Python vs. Lisp -- please explain
Torsten Bronger wrote: Peter Mayne [EMAIL PROTECTED] writes: What kind of implications are useful to you? Speed, ease of programming, necessity to learn/use a secondary language, issues with distributing, portability. Indeed. Given the various convenient arguments about what interpreted means (and how Python is simultaneously the same as and yet quite different to Lisp), you'd think that the average C/C++/Lisp programmer would have to be quite familiar with microcode to finish off a fair number of their projects. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expresson for Unix and Dos Lineendings wanted
On Thu, 23 Feb 2006 17:41:47 +, Martin Franklin
[EMAIL PROTECTED] wrote:
Franz Steinhaeusler wrote:
On Thu, 23 Feb 2006 13:54:50 +, Martin Franklin
[EMAIL PROTECTED] wrote:
r=erewr\r\nafjdskl
'erewr\r\nafjdskl'
2) Unix
r=erewr\nafjdskl
'erewr\nafjdskl'
why not use string methods strip, rstrip and lstrip
because this removes only the last spaces,
r
'erewr\r\nafjdskl '
r.rstrip()
'erewr\r\nafjdskl'
I want:
'erewr\r\nafjdskl'
or for unix line endings
'erewr\nafjdskl'
how about one of these variations
print 'erewr\r\nafjdskl '.replace( , )
print 'erewr\r\nafjdskl '.strip( \t)
Version 1:
w='erewr\r\nafjdskl '.replace( , )
w
'erewr\r\nafjdskl'
w='erewr\nafjdskl '.replace( , )
w
'erewr\nafjdskl'
w='word1 word2 \nafjdskl '.replace( , )
w
'word1word2\nafjdskl'
it replaces all spaces, not only the trailing whitespaces.
version 2:
w = 'erewr\r\nafjdskl '.strip( \t)
w
'erewr\r\nafjdskl'
w = 'erewr\nafjdskl '.strip( \t)
w
'erewr\nafjdskl'
w = 'word1 word2\nafjdskl '.strip( \t)
w
'word1 word2\nafjdskl'
I found a solution (not the most beautiful, but for
my purpose sufficiently good.)
Given: a file has no mixed lineendings, so it is either
a dos or unix file (mac line endings not respected).
swin=erewr \r\nafjdskl
sunix=erewr \nafjdskl
Dos Line endings (at least on '\r' included)?
r is contents of a file:
helpchar = ''
if r.find('\r') != -1:
helpchar = '\r'
retrailingwhitespacelf = re.compile('(?=\S)[ \t'+helpchar+']+$',
re.MULTILINE)
newtext, n = retrailingwhitespace.subn(helpchar, r)
if n 1:
r = newtext
--
Franz Steinhaeusler
--
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Re: regular expresson for Unix and Dos Lineendings wanted
On Fri, 24 Feb 2006 12:36:01 +0100, Franz Steinhaeusler [EMAIL PROTECTED] wrote: if n 1: if n 0: (of course) :-) -- Franz Steinhaeusler -- http://mail.python.org/mailman/listinfo/python-list
Re: Pickling/unpickling Cookie.SimpleCookie fails with protocol=2
Erwin S. Andreasen wrote:
Pickling a Cookie.SimpleCookie (or SmartCookie) when using protocol=2
seems to do something very strange. Protocol 0/1 work fine:
$ python2.4
Python 2.4.2 (#2, Nov 20 2005, 17:04:48)
[GCC 4.0.3 2005 (prerelease) (Debian 4.0.2-4)] on linux2
Type help, copyright, credits or license for more information.
import cPickle, Cookie
cPickle.loads(cPickle.dumps(Cookie.SimpleCookie('hi=there')))
SimpleCookie: hi='there'
Protocol 2 however:
pickle.loads(pickle.dumps(Cookie.Cookie('hi=there'),2))
SmartCookie: hi=Morsel: hi='there'
pickle.loads(pickle.dumps(Cookie.Cookie('hi=there'),2))['hi'].__dict__
{'coded_value':
'ccopy_reg\\012_reconstructor\\012p1\\012(cCookie\\012Morsel\\012p2\\012c__builtin__\\012dict\\012p3\\012(dp4\\012S\'comment\'\\012p5\\012S\'\'\\012sS\'domain\'\\012p6\\012S\'\'\\012sS\'version\'\\012p7\\012S\'\'\\012sS\'secure\'\\012p8\\012S\'\'\\012sS\'path\'\\012p9\\012S\'\'\\012sS\'expires\'\\012p10\\012S\'\'\\012sS\'max-age\'\\012p11\\012S\'\'\\012stRp12\\012(dp13\\012S\'coded_value\'\\012p14\\012S\'there\'\\012p15\\012sS\'value\'\\012p16\\012g15\\012sS\'key\'\\012p17\\012S\'hi\'\\012p18\\012sb.',
'value': Morsel: hi='there', 'key': 'hi'}
I can't really say what goes wrong here, but it looks like a bug to me
-- comments? I guess I'll have to go to protocol 0 for this, or not
serialize the cookie but re-parse it on the other side (this pickle
gets passed down a UNIX socket together with the file descriptor of a
request, in a load balancing system).
You can report a bug at SourceForge.
Georg
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Re: Using ElementTree to tidy up an XML string to my liking
Yes I am but, I'm using a DOM Serializer in Firefox which for some reason turns myCamelNames into MYCAMELNAMES for the nodenames. I'll therefore need to control the case-spelling of these things as I'm formatting the XML string. -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
Steven D'Aprano wrote: Now that's a Python wart: using for the prompt for interactive sessions. It makes it ambiguous when posting code in email or newsgroups, especially once the code gets quoted a few times. So change it. My pythonstartup.py contains: import sys sys.ps1 = ' ' sys.ps2 = ' ... ' Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
Op 2006-02-23, Roy Smith schreef [EMAIL PROTECTED]: Bob Greschke [EMAIL PROTECTED] wrote: I miss being able to do something like this in Python 1f (I = a.find(3)) != -1: print It's here: , I else: print No 3's here where I gets assigned the index returned by find() AND the if statement gets to do its job in the same line. Then you don't have to have another like that specifically gets the index of the 3. Is there a way to do this in Python? It is a deliberate and fundamental design decision in Python that assignment is a statement, not an expression with side effects. The only motivation I have heard for this decision is to easily find typo related bugs. I can hardly find that a fundamental design decision. -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
KPanelApplet using Python
Hi, I was wondering if there is any way to make KDE PanelApplets using Python. I have made a small window using Qt, kdeui nad kdecore libs. Now I want to add it to the KDE kicker. Can I get any help regarding this matter. Thank you. -- --- Varun Hiremath 461, Jamuna Hostel IIT Madras, Chennai - 600 036 mob : +919840299732 --- My Webpage : http://www.ae.iitm.ac.in/~ae03b032 --- -- http://mail.python.org/mailman/listinfo/python-list
Re: MySQLdb slow on MySQL 5
Magnus Lycka wrote: [EMAIL PROTECTED] wrote: I'm not calling COMMIT at all. Then you must be using autocommit if your records stay in the table. An DB-API 2.0 compliant adapter should turn off autocommit by default! Does MyISAM even support proper commit handling? [...] No, it doesn't. And COMMIT is then simply a no-op if it doesn't raise an error already. Oh well, Oracle will probably kill MySQL soon. Did you read too much Slashdot to spread such FUD? [...] I'd use a real database system. MySQL 5 could be described as one, according to the feature list, and if you use a transactional table type. I myself won't bother with it because PostgreSQL is still more featureful that MySQL 5, has a much longer track record with these features proven stable and a more liberal licensing. -- Gerhard -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expresson for Unix and Dos Lineendings wanted
Franz Steinhaeusler wrote: Thank you all for the replies. But I still don't have a solution. Of course with more lines it is possible, but it would be fine to have a oneliner. re.sub(r\s+[\n\r]+, lambda x: x.expand(\g0). \ lstrip( \t\f\v),text).rstrip() ...where text is the unsplit block of text with mysterious line-endings. But I think your code is a lot easier to read. :) -- http://mail.python.org/mailman/listinfo/python-list
Re: KPanelApplet using Python
I am not a Python expert, but I am using KDE on my workstation at home and a big Python fan ;) A couple of days ago I was thinking the same and found how to create systray apps for Windows! You can make this kind of apps with wxPython. When I was at home and behind my KDE desktop I tried the Windows code and it worked flawlessly in KDE. It was integrating into the kicker without problems. This was the thread that helped me out: http://groups.google.com/group/comp.lang.python/tree/browse_frm/thread/2113ca0f132f2f49/96f32dcd5e6f96ae Try to play with the code and you will see it will work :) -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
On Fri, 24 Feb 2006 06:45:41 -0500, Kent Johnson wrote: Steven D'Aprano wrote: Now that's a Python wart: using for the prompt for interactive sessions. It makes it ambiguous when posting code in email or newsgroups, especially once the code gets quoted a few times. So change it. My pythonstartup.py contains: import sys sys.ps1 = ' ' sys.ps2 = ' ... ' Sure, I can change my prompt. And you can change yours. And Bob can change his. And Freddy doesn't bother. And now we've all got different prompts, and nobody knows what's what... It is good to be able to set your own prompt when needed. But it is also good to have a common default prompt. And it would be good for that common default prompt to NOT clash with email quoting standards. Therefore that the prompt actually does clash is a wart. That's my opinion. Yours may differ. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Temporary Variable
Steven D'Aprano wrote: On Fri, 24 Feb 2006 00:24:25 +, Jeffrey Schwab wrote: Steven D'Aprano wrote: On Thu, 23 Feb 2006 12:05:59 -0800, darthbob88 wrote: My comments inserted inline. #!/usr/bin/python #simple guessing game, with numbers import random spam = random.randint(1, 100) It is bad programming practice to give variables uninformative joke names. Lighten up. This isn't the middle of a 100-KLOC corporate monstrosity, it's a 1/2-page usenet post. The original poster is also a newbie who was having trouble with the difference between strings and ints. If Guido called a variable spam, I wouldn't presume to correct him. When Newbie McNew does it, it might very well be because he doesn't know any better. Sorry if I snapped at you. But you didn't correct him, as he what he did wasn't wrong. You just talked down to him. Just out of curiosity, when do you think is the right time to begin teaching programmers good practice from bad? Before or after they've learnt bad habits? I'm not convinced the OP has a bad habit. Frankly, I prefer postings that have a sense of humor. I wouldn't want to see this turned into a purely techical forum. import random print , .join(['spam' for i in range(random.randint(1, 9))] + ['bacon', 'eggs', 'and']), 'spam' -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
In article [EMAIL PROTECTED], Steven D'Aprano [EMAIL PROTECTED] wrote: Side-effects aren't always bad (import, for example, does all its work by side-effect). But they are generally frowned upon, and in functional languages they are verboten. How do you do any I/O in a functional language if side effects are verboten? For that matter, how does a functional program ever stop running? -- http://mail.python.org/mailman/listinfo/python-list
Re: datetime iso8601 string input
Magnus, Thanks for your reply. I wasn't clear in my prior post. Rather than support the entire range of iso8601 formats, how about *just* the format that datetime emits? Call it the parse_datetime() function. Then it would be possible to take the output string of a datetime object and read it back in to round-trip the data. now = str(datetime.datetime.now()) now '2006-02-24 06:58:23.737586' datetime.parse_datetime(now) datetime.datetime(2006, 2, 24, 6, 58, 23, 737586) Jeff Bauer Rubicon, Inc. -- http://mail.python.org/mailman/listinfo/python-list
problem(s) with import from parent dir: from ../brave.py import sir_robin
Dear Black Knight,
I have no quarrel with you sir Knight, but I must import your parents.
SHORT VERSION:
I tried three variants of from ../brave.py import sir_robin, one
works. I want to use it in a py-file to execute command-line-style and
that does not work.
Can someone please give me, not a bucket with the desert(s) on top, but
just the thin chocolate?
/per9000 (per nine thousand at gmail dot com)
LONG VERSION:
Since I do not want to use absoute paths I want to import a file from
two folders up and then one down.
This problem seems to be discussed in:
http://starship.python.net/pipermail/python-au/2005/000543.html
I tried following it but I did not understand and/or try hard enough
and/or my father smells of elderberrys.
So...
...first I tried this: from ../brave.py import sir_robin (and
variants)
But all I got was syntax or import error(s).
--
Then I tried to fool python by walking the path up with os.chdir('..')
in the line-by-line interpreter.
This (surprisingly) worked just fine.
C:\my\holy\grail\that_old_bridgepython
import os
os.chdir('../../py_scripts')
os.getcwd()
'C:\\my\\holy\\py_scripts'
from raw2nice_def import raw2nice
os.listdir('.')
['raw2nice_def.py', 'raw2nice_def.pyc', 'temp']
raw2nice
function raw2nice at 0x00A28230
--
When I tried putting this into a program to execute command-line-style:
the interesting code:
import os
cwd = os.getcwd()
os.chdir('../../py_scripts')
print os.listdir('.')
from raw2nice_def.py import raw2nice
os.chdir(cwd)
output:
C:\another_bridge\python\python.exe rawhtml2nicehtml_template.py
['raw2nice_def.py', 'raw2nice_def.pyc', 'temp']
Traceback (most recent call last):
File C:my\holy\grail\that_old_bridge\rawhtml2nicehtml_template.py,
line 10, in ?
from raw2nice_def.py import raw2nice
ImportError: No module named raw2nice_def.py
The worst part here is that os.listdir('.') returns ['raw2nice_def.py',
'raw2nice_def.pyc', 'temp'] - meaning (to me) that Python really should
feel my nice file but somehow still does not see it.
To me this also means that python::command_line does not concurr with
python::line_by_line(!?!)
Can someone please give me, not a bucket with the desert(s) on top, but
just the thin chocolate?
/per9000 (per nine thousand at gmail dot com)
--
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Re: problem(s) with import from parent dir: from ../brave.py import sir_robin
per9000 wrote: from raw2nice_def import raw2nice -- When I tried putting this into a program to execute command-line-style: from raw2nice_def.py import raw2nice output: C:\another_bridge\python\python.exe rawhtml2nicehtml_template.py ['raw2nice_def.py', 'raw2nice_def.pyc', 'temp'] Traceback (most recent call last): File C:my\holy\grail\that_old_bridge\rawhtml2nicehtml_template.py, line 10, in ? from raw2nice_def.py import raw2nice ImportError: No module named raw2nice_def.py Maybe it will work without the .py extension which is the correct form for an import (and what worked from the command line). Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
Roy Smith: How do you do any I/O in a functional language if side effects are verboten? The user is a function. Output is its parameter, input its return value. The user is not allowed to maintain state ;-) For that matter, how does a functional program ever stop running? By returning to the caller. -- René Pijlman -- http://mail.python.org/mailman/listinfo/python-list
Re: problem(s) with import from parent dir: from ../brave.py import sir_robin
On 24 Feb 2006 05:10:37 -0800, per9000 [EMAIL PROTECTED] wrote: SHORT VERSION:I tried three variants of from ../brave.py import sir_robin, oneworks. I want to use it in a py-file to execute command-line-style andthat does not work.Can someone please give me, not a bucket with the desert(s) on top, but just the thin chocolate? Add the absolute path to a file called python.pth in your c:\python2x directory using the format: C:\my\holy\py_scripts (newline) for *each* directory and subdirectory Then simply import the module as normal from raw2nice_def import raw2nice HTH :) -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
On Fri, 24 Feb 2006 08:03:49 -0500, Roy Smith wrote: In article [EMAIL PROTECTED], Steven D'Aprano [EMAIL PROTECTED] wrote: Side-effects aren't always bad (import, for example, does all its work by side-effect). But they are generally frowned upon, and in functional languages they are verboten. How do you do any I/O in a functional language if side effects are verboten? For that matter, how does a functional program ever stop running? Fair enough. But still, ignoring unavoidable cases like writing to a file, the ideal of functional languages is for side-effects to not exist. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
Roy Smith wrote: In article [EMAIL PROTECTED], Steven D'Aprano [EMAIL PROTECTED] wrote: Side-effects aren't always bad (import, for example, does all its work by side-effect). But they are generally frowned upon, and in functional languages they are verboten. How do you do any I/O in a functional language if side effects are verboten? For that matter, how does a functional program ever stop running? Using Monads. Which basically starts carrying around explicit state in an implicit manner. But that is restricted to very few, specific portions of the program. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: [ANN] httpy 0.9.0 -- a sane and robust HTTP library for Python
Chad Whitacre: I am pleased to announce the first public release of httpy -- a sane and robust HTTP library for Python. With httpy, you write responders, and put them on the network with couplers. Here is a trivial responder: import httpy class Responder: def respond(request): raise httpy.Response(200, Greetings, program!) And here is how to couple it: responder = Responder() coupler = httpy.couplers.StandAlone(responder) coupler.go() httpy is so amazing, in fact, that with it I was able to write an entire wiki in only 20 seconds! Now that's what I call a short learning curve. So can this replace Zope then? Or mod_python? Apache? CGI? All of those? -- René Pijlman -- http://mail.python.org/mailman/listinfo/python-list
Re: KPanelApplet using Python
Another way to do it is to use ksystraycmd which is included with your KDE. Some usage info is covered in my tutorial: http://xmelegance.org/customising-window-behaviour/html/customising-window-behaviour.html Rich. -- http://mail.python.org/mailman/listinfo/python-list
Re: problem(s) with import from parent dir: from ../brave.py import sir_robin
Thanks, I added an environment variable PYTHONPATH and added the holy folder with my script in. Works just perfectly. But still: is there a way around this? (It is a lot easier to add ../../ in my code than make everyone else add this variable). /per9000 -- http://mail.python.org/mailman/listinfo/python-list
How to tell an object's class?
Hi,
I would like to create a dictionary of all the classes that exist while my
app is running. This is the best I can do:
def defineClassesDict (self):
self.allClassesDict = {}
for z in gc.get_objects():
t = type(z)
if t == types.ClassType:
name = z.__name__
elif t == types.InstanceType:
name = z.__class__.__name__
elif repr(t).startswith('class'): # A wretched kludge.
name = z.__class__.__name__
elif t == types.TypeType:
name =z.__name__
else:
name = None
if name:
self.allClassesDict [name] = z
This works, but it relies on a wretched (and slow) kludge, namely the test:
repr(t).startswith('class')
There seems to be a hole in the types module. Can anyone suggest a better
approach? Thanks.
Edward
Edward K. Ream email: [EMAIL PROTECTED]
Leo: http://webpages.charter.net/edreamleo/front.html
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Re: time.sleep(1) sometimes runs for 200 seconds under windows
Magnus Lycka wrote: With an operating system such as Windows, this is probably something you can expect to happen, although I'm surprised if such long lag times as 200 s are typical. No way. I mean, I'm the biggest critic of Windows operating systems when used in realtime environments (at least with my customers), but there's no way you should probably expect a 200s delay to happen. (You can't guarantee it won't, but seeing it on a regular basis is sending a clear message that something *else* is going on. Dennis' guess seems a good one.) If you need real time characteristics, you should probably use a real time operating system, not Windows. Quite true. I doubt the OP needs that though. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: problem(s) with import from parent dir: from ../brave.py import sir_robin
You don't _need_ to go the PYTHONPATH route (although that works).
Re-read Carsten's post (particularly step 1, see section 6.1.1).
You can use:
sys.path.append('..')
from brave import sir_robin
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Re: problem(s) with import from parent dir: from ../brave.py import sir_robin
On Fri, 2006-02-24 at 09:10, per9000 wrote: Thanks, I added an environment variable PYTHONPATH and added the holy folder with my script in. Works just perfectly. But still: is there a way around this? (It is a lot easier to add ../../ in my code than make everyone else add this variable). Yes. From http://docs.python.org/tut/node8.html#SECTION00811: Actually, modules are searched in the list of directories given by the variable sys.path [...]. This allows Python programs that know what they're doing to modify or replace the module search path. In other words, your script may simply append other module locations such as ../.. to sys.path. -Carsten. -- http://mail.python.org/mailman/listinfo/python-list
Re: datetime iso8601 string input
Rubic wrote: Thanks for your reply. I wasn't clear in my prior post. Rather than support the entire range of iso8601 formats, how about *just* the format that datetime emits? Call it the parse_datetime() function. Then it would be possible to take the output string of a datetime object and read it back in to round-trip the data. now = str(datetime.datetime.now()) now '2006-02-24 06:58:23.737586' datetime.parse_datetime(now) datetime.datetime(2006, 2, 24, 6, 58, 23, 737586) Jeff Bauer Rubicon, Inc. If that's truly all you want, then it's a near trivial function to write. One of those throw-away functions you tend to whip up a few dozen times on every project, hardly noticing because you're using Python and it's so easy to do. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Grant Edwards wrote: Time to dowload a linux CD then, eh? We are looking at that very seriously. The big hurdle is that we run a lot of laboratory hardware that has no support under linux. A world where there is no more Kazaa or sasser seems like it would be wonderful, though. Paul Probert University of Wisconsin -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expresson for Unix and Dos Lineendings wanted
On 24/02/06, John Zenger [EMAIL PROTECTED] wrote:
Franz Steinhaeusler wrote: Thank you all for the replies. But I still don't have a solution.re.sub(r\s+[\n\r]+, lambda x: x.expand(\g0). \ lstrip( \t\f\v),text).rstrip()
But I think your code is a lot easier to read.:)
How about:
linesep = '\n'
text = 'erewr \t \r\nafjdskl \r\n \r\npythonlist'
linesep.join([ x.rstrip() for x in text.replace('\r\n','\n').replace('\r','\n').split('\n') ])
'erewr\nafjdskl\n\npythonlist'
Which right-strips the line endings, tabs and spaces from the ends of
lines in a string derived from either Windows, Mac and Unix or
mixed files
HTH :)
-- Tim Williams
--
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Re: time.sleep(1) sometimes runs for 200 seconds under windows
Claudio Grondi wrote:
Paul Probert wrote:
Peter Hansen wrote:
Are you saying that you believe the time.sleep(1) call is actually
blocking for 200 seconds?
With such rare occurrence it is very hard to tell what is going on.
Usually I put such strange things on a list of curiosities I don't want
to know the reason of, because it is in my eyes not worth the effort.
Maybe it is even a common problem not yet detected by me, because I have
never run this kind of tests for such a long time.
Starting today, I can tell you statistically not earlier than in one
week, if I have the same problem on my machines (currently I am running
only one or two at the same time).
Here the intermediate results on my Windows XP machine connected to the
Internet via very fast digital phone line connection (network
card/digital-converter box/phone-line):
dt= 1.125 time= 2006_02_24_11h_36m_15s
dt= 9.20200014114 time= 2006_02_24_12h_46m_49s
dt= 1.1876376 time= 2006_02_24_14h_43m_32s
The code used:
import time
while True:
oldtime=time.time()
time.sleep(1.0)
newtime=time.time()
dt=newtime-oldtime
if dt 1.1:
print 'dt=',dt,' time=',time.strftime('%Y_%m_%d_%Hh_%Mm_%Ss')
running in a command line console parallel to usual daily business on
the computer.
The yesterday night run (5 hours) gave max. 1.125 sec., so I am
surprized to see the 9 seconds already after only two hours today.
Claudio
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Re: make a class instance from a string ?
Is there anything particularly bad with obj = eval(classname + ()) ? It appears to work, but I'm a noobie so I could be missing something nasty, in which any edication would be gratefully received. Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: a little more help with python server-side scripting
Magnus Lycka wrote: The other option is ASP. You have been given information about that already. Be aware that ASP does not imply VBScript. You can use Python in ASP as long as that's enabled. It seems to be exactly what you are asking for, so I don't understand why you seem to reject it. Don't you like the file name endings? Maybe I'm misunderstanding what is meant when you say to use ASP. I'm thinking that it involves having to learn another language (such as C# with ASP.NET), instead of writing my code in Python. Is that not the case? -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Dennis Lee Bieber wrote: On Thu, 23 Feb 2006 15:56:09 -0600, Paul Probert [EMAIL PROTECTED] declaimed the following in comp.lang.python: Thanks for the reply. I should have mentioned, this happens to just about every machine in our collection of about 20 machines. Each is of a different age, and the hardware is completely diverse. Each has either of NT4, win2k, or XP installed. They all belong to our domain Any chance they all tend to have slow clocks, and are getting bitten by a semi-random NTP time update; my machine tends to run the NTP update at 7-day intervals (including time of day), counting from the last successful synchronization. This is now our leading suspect. All the affected machines have abouttime.exe running as a service, something our sysadmin put in a few years ago. We are currently disabling this and now waiting for the proof. Thanks! Paul Probert University of Wisconsin -- http://mail.python.org/mailman/listinfo/python-list
Re: pyserial
Thanks Peter, because you have understood my need: a little understanding of readlines() function. # Following snippets of code is running in infinitive loop, but it is not necessary too be worried about processor utilization because the readline waits for the data on the serial port and the code continues to run when data occurs or when timeout passes. # my python script tries to read a lot of data (the histograms) and that can take many times (3 min) to download one file. and data do not arrived in the same time you can wait few seconds between data ( data response for the same command). do you think that readlines() function will wait until all data are arrived or when the timeout expired ? if the data take more time, the readlines() will wait or will break on the timeout ? with hyperterminal the data are echoed when they arrived and you can see that they do not arrived all the same time. the timeout is reset when the first data arrived or it is only ignored ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python vs. Lisp -- please explain
Torsten Bronger wrote: Hallöchen! Paul Boddie [EMAIL PROTECTED] writes: Kay Schluehr wrote: I would say yes, it is still proper Python in that each RPython program is also a CPython program. I suppose it depends on which direction you're coming from, in that many Python programs just wouldn't be able to run in RPython. But then I can understand the convenience of having a subset of Python that is executable by CPython, but which can also be inspected and processed for other purposes, and whose programs maintain their semantics in both situations. I'm still afraid of the following scenario: Eventually, people might regard RPython plus type declarations (or something similar) as first-class Python because it's faster and runs on more implementations, so they try to stick to it. So effectively you would have changed Python. I wonder why you believe that it would run on more platforms? This assertion is justifiable with regard of tiny target hardware - but else? I do think that RPython++ could be a viable replacement for C as a systems programming language BECAUSE it is connected closely to Python. It is a kind of upside-down evolution: a low level language emerges from a more high level language. We currently know only the other side of the story. RPython would just be the common denominator or the language interface. Gilad Bracha suggested optional type systems for dynamic languages[1] but as it seems to me RPython would be a fine candidate for a declarative layer, not Python. Maybe I misunderstood something because I could not follow all of Kay's text but I think one should not change Python or create a look-alike to allow for better implementations. The language should fit my brain rather than an implementation. It should first of all fit the diversity of a programmers needs. C was never considered as a hostile brother of Python so why should it be Pythons own son? Kay -- http://mail.python.org/mailman/listinfo/python-list
Re: pyserial
thanks philippe, Hi will take care for the that. -- http://mail.python.org/mailman/listinfo/python-list
Re: problem(s) with import from parent dir: from ../brave.py import sir_robin
...and there was much rejoicing... Even better, thanks - you guys are the best. import string, time, sys sys.path.append(../../py_scripts) Works just nice, and yes, I removed the env.variable before I tried it :-D /Per9000 -- http://mail.python.org/mailman/listinfo/python-list
Re: Pickling/unpickling Cookie.SimpleCookie fails with protocol=2
Erwin S. Andreasen [EMAIL PROTECTED] writes: Pickling a Cookie.SimpleCookie (or SmartCookie) when using protocol=2 seems to do something very strange. Protocol 0/1 work fine: Oh well, it seems that it's a well-known bug that has been around for more than 2 years: http://sourceforge.net/tracker/index.php?func=detailaid=826897group_id=5470atid=105470 http://sourceforge.net/tracker/index.php?func=detailaid=964868group_id=5470atid=105470 -- === [EMAIL PROTECTED]London, E14 URL:http://www.andreasen.org/ * === -- http://mail.python.org/mailman/listinfo/python-list
Re: datetime iso8601 string input
Yeah, it's a trivial function that's rewritten for each new project that passes datetime objects as strings 0.2 wink. On the basis of it being a trivial convenience, I could propose removing hundreds of redundant functions from the library. ;-) Never mind. I'll drop it. Jeff Bauer Rubicon, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter canvas size determination
Cameron: Cameron Laird wrote: In article [EMAIL PROTECTED], Dean Allen Provins [EMAIL PROTECTED] wrote: I need to determine the size of a canvas while the process is running. Does anyone know of a technique that will let me do that? . . . Does import Tkinter c = Tkinter.Canvas() c.create_oval(13, 51, 80, 130) 1 c.pack() print c.cget(width) 284 help? There are actually several different notions of the size of a canvas. The example abovve should be a good starting point, though. There's also a mailing list specifically for Tkinter URL: http://tkinter.unpythonic.net/wiki/mailing_20lists ; that might interest you. I tried the cget function, and it returned the width that I had used when creating the canvas - even though the canvas was wider than that value at display time (and also after manually resizing the window). To your knowledge, is there a method to determine the current dimensions? Thanks, Dean -- http://mail.python.org/mailman/listinfo/python-list
Re: Python vs. Lisp -- please explain
Hallöchen! Kay Schluehr [EMAIL PROTECTED] writes: Torsten Bronger wrote: [...] I'm still afraid of the following scenario: Eventually, people might regard RPython plus type declarations (or something similar) as first-class Python because it's faster and runs on more implementations, so they try to stick to it. So effectively you would have changed Python. I wonder why you believe that it would run on more platforms? I meant the following: RPython programs will run on all Python implementations, *plus* the environments where only RPython is possible. This assertion is justifiable with regard of tiny target hardware - but else? I do think that RPython++ could be a viable replacement for C as a systems programming language BECAUSE it is connected closely to Python. Ah, okay. This was a vision that I didn't understand from previous postings. [...] Maybe I misunderstood something because I could not follow all of Kay's text but I think one should not change Python or create a look-alike to allow for better implementations. The language should fit my brain rather than an implementation. It should first of all fit the diversity of a programmers needs. C was never considered as a hostile brother of Python so why should it be Pythons own son? Because I think it would be tempting to add all necessary declations in order to make one's code working with the fastest Python implementation available. After all, mostly we know the types, although currently we don't declare them. It's a purely psychological issue: People want to create valueable code, pythonistas even more so, ignoring that eventually it may turn out that this was not a good idea. Current Python *forces* us to keep the code as flexible as possible. Tschö, Torsten. -- Torsten Bronger, aquisgrana, europa vetusICQ 264-296-646 -- http://mail.python.org/mailman/listinfo/python-list
[ANNOUNCE] Mod_python 3.2.8 (security)
The Apache Software Foundation and The Apache HTTP Server Project are pleased to announce the release of version 3.2.8 of mod_python. This release addresses a vulnerability in mod_python's FileSession object whereby a carefully crafted session cookie could potentially permit an attacker to execute code on the server. FileSession was introduced in mod_python 3.2.7 released on February 15 2006 and is not enabled by default, therefore only a very small number of installations, if any, are likely to be affected by this issue. There are no other changes or improvements from the previous version in this release. Mod_python is available for download from: http://httpd.apache.org/modules/python-download.cgi For more information about mod_python visit http://www.modpython.org/ Regards, Gregory Trubetskoy -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter canvas size determination
Dean Allen Provins wrote: Cameron: Cameron Laird wrote: In article [EMAIL PROTECTED], Dean Allen Provins [EMAIL PROTECTED] wrote: I need to determine the size of a canvas while the process is running. Does anyone know of a technique that will let me do that? . . . Does import Tkinter c = Tkinter.Canvas() c.create_oval(13, 51, 80, 130) 1 c.pack() print c.cget(width) 284 help? There are actually several different notions of the size of a canvas. The example abovve should be a good starting point, though. There's also a mailing list specifically for Tkinter URL: http://tkinter.unpythonic.net/wiki/mailing_20lists ; that might interest you. I tried the cget function, and it returned the width that I had used when creating the canvas - even though the canvas was wider than that value at display time (and also after manually resizing the window). To your knowledge, is there a method to determine the current dimensions? Thanks, Dean Dean, Look at the winfo_* methods of Tkinter widgets, I think the one you want is called winfo_reqheight / winfo_reqwidth or something very similar pydoc Tkinter.Canvas will sort that out Martin -- http://mail.python.org/mailman/listinfo/python-list
chrtohex
Hello again my friends here's my new problem. How i can translate chr in to hex or int to integer value? Best Regards Luca -- http://mail.python.org/mailman/listinfo/python-list
Re: pyFltk-1.1
Andreas, Congratulations, it's a well polished release. For those not familiar with FLTK, there are many examples in the Python24/pytfltk/test directory. -- http://mail.python.org/mailman/listinfo/python-list
Regular expression fun. Repeated matching of a group Q
Hi all,
I've spent all morning trying to work this one out:
I've got the following string:
td04/01/2006/tdtdWednesday/tdtdnbsp;/tdtd09:14/tdtd12:44/tdtd12:50/tdtd17:58/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtd08:14/td
from which I'm attempting to extract the date, and the five times from
into a list. Only the very last time is guaranteed to be there so it
should also work for a line like:
td03/01/2006/tdtdTuesday/tdtdAnnual_Holiday/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtdnbsp;/tdtd08:00/td
My Python regular expression to match that is currently:
digs = re.compile(
r'td(\d{2}\/\d{2}\/\d{4})/td.*?(?:td(\d+\:\d+)/td).*$' )
which first extracts the date into group 1
then matches the tags between the date and the first instance of a time
into group 2
then matches the first instance of a time into group 3
but then group 4 grabs all the remaining string.
I've tried changing the time pattern into
(?:td(\d+\:\d+)/td)+
but that doesn't seem to mean grab one or more cases of the previous
regexp.
Any Python regexp gurus with a hint would be greatly appreciated.
M@
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Re: chrtohex
luca72 wrote:
Hello again my friends
here's my new problem.
How i can translate chr in to hex or int to integer value?
print %x % ord('a')
Diez
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Re: a little more help with python server-side scripting
Kent Johnson wrote:
John Salerno wrote:
Magnus Lycka wrote:
The other option is ASP. You have been given information about
that already. Be aware that ASP does not imply VBScript. You can
use Python in ASP as long as that's enabled. It seems to be exactly
what you are asking for, so I don't understand why you seem to reject
it. Don't you like the file name endings?
Maybe I'm misunderstanding what is meant when you say to use ASP. I'm
thinking that it involves having to learn another language (such as C#
with ASP.NET), instead of writing my code in Python. Is that not the
case?
See http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B276494
The last example on this page is exactly what you have been asking for.
Kent
But isn't this code:
Response.Write('Python Testbr')
Response.write('h3Smaller heading/hr')
written using ASP instead of Python?
--
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Re: why don't many test frameworks support file-output?
kanchy kang wrote:
I don't think redirecting stdout to a file is a good resolution.
Nobody is suggesting:
python program.py output
or
program.py output
What is being suggested is:
import sys
import module
original, sys.stdout = sys.stdout, open('output', 'w')
try:
module.main()
finally:
result, sys.stdout = sys.stdout, original
size = result.tell()
result.close()
print size, 'bytes written to file output'
If, however, you want everyone else to conform to your personal idea
of best practices, then hire them and tell them to do it your way.
--Scott David Daniels
[EMAIL PROTECTED]
--
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Re: a little more help with python server-side scripting
John Salerno wrote:
Kent Johnson wrote:
John Salerno wrote:
Magnus Lycka wrote:
The other option is ASP. You have been given information about
that already. Be aware that ASP does not imply VBScript. You can
use Python in ASP as long as that's enabled. It seems to be exactly
what you are asking for, so I don't understand why you seem to reject
it. Don't you like the file name endings?
Maybe I'm misunderstanding what is meant when you say to use ASP. I'm
thinking that it involves having to learn another language (such as
C# with ASP.NET), instead of writing my code in Python. Is that not
the case?
See http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B276494
The last example on this page is exactly what you have been asking for.
Kent
But isn't this code:
Response.Write('Python Testbr')
Response.write('h3Smaller heading/hr')
written using ASP instead of Python?
No, it's Python code that calls the Write() method on the Response
object that is exposed by ASP.
Kent
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stop a doctest execution
Hello, is there a simple way to stop a doctest execution within its code ? my use case is to abort the execution of part of the doc, given an arbitrary condition. That could be: existence of a third party package or whatever. Adding tests throughout the doctest does not look good. Maybe it's time to implement the 'exit' builtin ? ;) Failed example: exit Expected nothing Got: 'Use Ctrl-D (i.e. EOF) to exit.' Tarek-- Tarek Ziadé | Association AfPy | www.afpy.orgSite personnel | http://programmation-python.org -- http://mail.python.org/mailman/listinfo/python-list
Re: make a class instance from a string ?
Mike Woodhouse wrote: Is there anything particularly bad with obj = eval(classname + ()) It appears to work, but I'm a noobie so I could be missing something nasty, in which any edication would be gratefully received. It is a little too indirect. Usually wanting to use eval or exec means your code is probably not properly structured (a code smell). You can pass classes around as values; you typically needn't work with their names. If the name comes from outside, a dictionary of names to classes means you can re-implement your code without being tightly coupled to your I/O formats. If you still want to use the name I'd go with: globals()[classname]() over eval, but it is your code. Here's a danger to think about: Suppose your source of class names has: '__import__(os).system(delete critical.file)' for a class name? --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Regular expression fun. Repeated matching of a group Q
There's more to re than just sub. How about: sanesplit = re.split(r/tdtd|td|/td, text) date = sanesplit[1] times = times = [time for time in sanesplit if re.match(\d\d:\d\d, time)] ... then date contains the date at the beginning of the line and times contains all your times. -- http://mail.python.org/mailman/listinfo/python-list
Re: a little more help with python server-side scripting
John Salerno wrote: Maybe I'm misunderstanding what is meant when you say to use ASP. I'm thinking that it involves having to learn another language (such as C# with ASP.NET), instead of writing my code in Python. Is that not the case? Nope. Just like CGI, ASP is language agnostic. It's a Microsoft standard for embedding code in HTML pages. Look at the references earlier in the thread and/or google for Python ASP. Of course, the catch here is that your ISP might not have enabled Python as a scripting language on the servers... Finally, it's my impression that your ambition is to use some kind of scripting to get a uniform look and navigation etc in your web pages. This might not require any kind of dynamic web site. In that case I'd suggest that you simply make build some Python tool on your own computer that builds a static version of your entire web site in the safe and free environment of your home. If you want to change something, you simply edit a file at home, rebuild your site and upload the new files. I've built a few sites like that, and if you don't really need to serve anything but static pages, it's probably your best bet. - It'll give you a snappy site. It just serves static pages. - You don't rely on any particular technology from your ISP, they just need FTP etc so that you can upload your files, and a plain web server. - You have the original content at home, so you always have a backup of your web site. - You can use whatever tools you like to create your data without involving your ISP. Personally, I think HTML is a crappy language to write text in. I prefer to use something like reST, see http://docutils.sourceforge.net/rst.html From reST there are convenient tools to get both HTML and PDF documents--good for CVs etc. The standard tool doesn't make room for those custom headers or footers though. There is some help there though. Look here: http://docutils.sourceforge.net/docs/user/links.html -- http://mail.python.org/mailman/listinfo/python-list
Re: make a class instance from a string ?
On Fri, 24 Feb 2006 06:37:27 -0800, Mike Woodhouse wrote:
Is there anything particularly bad with
obj = eval(classname + ())
?
It appears to work, but I'm a noobie so I could be missing something
nasty, in which any edication would be gratefully received.
In your own code, that you control? Nothing particularly bad.
In your public web application, using classname supplied by some anonymous
remote user? It could be bad:
obj = eval((lambda : os.system('ls')) + ())
only, instead of 'ls', imagine a more... serious shell command.
Using eval is like running a small piece of Python code. If you control
the code (or to be precise, the expression) then it is no more dangerous
than any other code you choose to run.
On the other hand, if you give access to your system to anonymous users,
you have to assume some of them will be malicious, and they will be a lot
more inventive searching for security holes than you.
--
Steven.
--
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Re: a little more help with python server-side scripting
John Salerno wrote:
Kent Johnson wrote:
John Salerno wrote:
Magnus Lycka wrote:
The other option is ASP. You have been given information about
that already. Be aware that ASP does not imply VBScript. You can
use Python in ASP as long as that's enabled. It seems to be exactly
what you are asking for, so I don't understand why you seem to reject
it. Don't you like the file name endings?
Maybe I'm misunderstanding what is meant when you say to use ASP. I'm
thinking that it involves having to learn another language (such as C#
with ASP.NET), instead of writing my code in Python. Is that not the
case?
See http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B276494
The last example on this page is exactly what you have been asking for.
Kent
But isn't this code:
Response.Write('Python Testbr')
Response.write('h3Smaller heading/hr')
written using ASP instead of Python?
Here's a demo script called 'tut1.asp' located in
'site-packages\win32comext\axscript\Demos\client\asp':
HTML
SCRIPT Language=Python RUNAT=Server
for i in range(3,8):
Response.Write(FONT SIZE=%dHello World!!BR % i)
/SCRIPT
/HTML
###
and here is 'CreateObject.asp' from the same directory:
HTML
SCRIPT Language=Python RUNAT=Server
# Just for the sake of the demo, our Python script engine
# will create a Python.Interpreter COM object, and call that.
# This is completely useless, as the Python Script Engine is
# completely normal Python, and ASP does not impose retrictions, so
# there is nothing the COM object can do that we can not do natively.
o = Server.CreateObject(Python.Interpreter)
Response.Write(Python says 1+1= + str(o.Eval(1+1)))
/SCRIPT
/HTML
Gerard
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Re: Regular expression fun. Repeated matching of a group Q
Thanks, The date = sanesplit[1] line complains about the list index being out of range, which is probably due to the fact that not all lines have the td in them, something i didn't explain in the previous post. I'd need some way of ensuring, as with the pattern I'd concocted, that a valid line actually starts with a td containing a / separated date tag. As an aside, is it not actually possible to do what I was trying with a single pattern or is it just not practical? M@ -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote:
Yes, I'm doing this:
.
oldtime=time.time()
time.sleep(1)
newtime=time.time()
dt=newtime-oldtime
if dt 2:
print 'dt=',dt,' time=',time.strftime('%Y_%m_%d_%Hh_%Mm_%Ss')
Its happening roughly 4 times a day total on our 20 machines, ie about
once every 5 days on a given machine.
Well, you have a guess about the time updates that may well tell you
all. Because of that guess, you might want to try:
oldtime = time.time()
time.sleep(1)
newtime = time.time()
delta = newtime - oldtime
if not .5 delta 2:
print 'delta=%s, from=%s, time=%s' % (
delta, time.strftime('%Y_%m_%d_%Hh_%Mm_%Ss',
time.gmtime(oldtime)),
time.strftime('%Y_%m_%d_%Hh_%Mm_%Ss',
time.gmtime(newtime)))
to see if you get time running backwards as well.
--Scott David Daniels
[EMAIL PROTECTED]
--
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Re: pyserial
I can recommend you to read pyserial documentation and look to the examples. Browsing through this discussion group can help you a lot as well. Generally if the timeout is set to 0 (zero) the code will wait and wait and wait till the data will arrive to the serial port (if there is not data on the serial port, you can wait forever and you can think your code is frozen :) ) Because of that, you can set the timeout, so after some time of waiting for the data (when the data do not arrive) the code continues on the next line. Try to experiment a little bit with some simple and short code first, so you will be able to understand how to communicate with the serial port. HTH Petr Jakes -- http://mail.python.org/mailman/listinfo/python-list
groupwise send mail
Can someone give me an idea as to why this is not working? The
Recipients.Add line doesnt cause an error, but my recipients arent
being used. The email never gets sent because there is no recipeients.
Thanks,
Eric
import win32com.client
gwApp = win32com.client.Dispatch('NovellGroupWareSession')
acct1 = gwApp.Login(NDS:\\Tree_Name,user.context, )
oMail = acct1.MailBox.Messages.Add (GW.Message.Mail, Draft)
oMail.fromtext = Python Hazmat Script
oMail.Recipients.Add([EMAIL PROTECTED])
oMail.Subject.PlainText = Script error
oMail.BodyText.PlainText = The Python Hazmat script failed
oMail.send
gwApp.quit
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Re: chrtohex
luca72 wrote: Hello again my friends here's my new problem. How i can translate chr in to hex or int to integer value? Best Regards Luca By demonstrating that you have tried to solve the problem yourself. See: http://www.catb.org/~esr/faqs/smart-questions.html --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Module written in C does not repond to Ctrl-C interruption.
Bo Peng wrote: Dear list, I have not done a thorough test, but it occurs to me that 1. python code can be interrupted by Ctrl-C. 2. A C module, if I add a main() function and run independently, can be interrupted by Ctrl-C. 3. If I load the C module in python and run, the program will not respond to Ctrl-C interruption. I have to kill python explicitly. If this is a known behavior or just a special case of mine? Any fix to it? I am using python 2.3.4 under Redhat EL4 with gcc 3.3.4. I fear it is a known behavior and not easy to fix. See the module signal docs: Although Python signal handlers are called asynchronously as far as the Python user is concerned, they can only occur between the ``atomic'' instructions of the Python interpreter. This means that signals arriving during long calculations implemented purely in C (such as regular expression matches on large bodies of text) may be delayed for an arbitrary amount of time. So - no workaround here, unless you patch python. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Regular expression fun. Repeated matching of a group Q
You can check len(sanesplit) to see how big your list is. If it is 2, then there were no td's, so move on to the next line. It is probably possible to do the whole thing with a regular expression. It is probably not wise to do so. Regular expressions are difficult to read, and, as you discovered, difficult to program and debug. In many cases, Python code that relies on regular expressions for lots of program logic runs slower than code that uses normal Python. Suppose words contains all the words in English. Compare these two lines: foobarwords1 = [x for x in words if re.search(foo|bar, x) ] foobarwords2 = [x for x in words if foo in x or bar in x ] I haven't tested this with 2.4, but as of a few years ago it was a safe bet that foobarwords2 will be calculated much, much faster. Also, I think you will agree, foobarwords2 is a lot easier to read. -- http://mail.python.org/mailman/listinfo/python-list
