Re: Using ElementTree to tidy up an XML string to my liking
..I hope that you are aware that xml is *case sensitive* -- http://mail.python.org/mailman/listinfo/python-list
Re: ls files --> list packer
kpp9c wrote:
> Namely i have organized a bunch of folders that have soundfiles in them
> and would like Python to slurp up all the .aif/.aiff (or .wav whatever)
> files in a given set of directories. My friend hacked up this is perl:
>
> $files = `ls /snd/Public/*.aiff`;
You could use posix.popen to duplicate the perl hack:
files = posix.popen('ls /snd/Public/*.aiff').read().strip()
> @snd_filelist = split('\n',$files);
snd_filelist = files.split('\n')
> I would like something similar, that works with python that is more
> elegant and maybe even more robust.
Lucklily, python lets you avoid this kind of horrible hack. Try
os.listdir:
snd_filelist = [f for f in os.listdir('/snd/Public/') if
f.endswith('.aiff')]
I think it's more elegant, and it's certainly more robust.
> but i am failing miserably and my perl friends mock me.
Now you get to mock your perl friends!
--
http://mail.python.org/mailman/listinfo/python-list
Re: ls files --> list packer
and one example of a slightly fancier version would be a variation that looks recursively into subdirectories and makes separate lists for each subdirectory encountered. so if i had a directory called "~/snd/" and in "~/snd/" i had: "~/snd/one/" "~/snd/two/" "~/snd/three/" each with soundfiles in it. I could get those packed in three separate lists named after the directory or some such thing This would be so awesome because my carefully organizing your directory, you would be carefully organizing your data, change your dir structure or add/delete some files and you would get a new structure in your script... prolly would work with scripting your iTunes music folder too... gosh ... sorry ... just thinking out-loud here and getting kind of giddy! reaching for the python book ... -- http://mail.python.org/mailman/listinfo/python-list
Re: 'rar' is not recognized as an internal or external command��������
os.chdir() ?
thank you!
--
"Dennis Lee Bieber" <[EMAIL PROTECTED]>
news:[EMAIL PROTECTED]
> On Fri, 24 Feb 2006 11:36:08 +0800, "Ã÷Ãòä»Ã" <[EMAIL PROTECTED]>
> declaimed the following in comp.lang.python:
>
> > thank everyone!!!
> >
> I'd had to run to work so couldn't test, but... notice this:
>
>
> C:\Documents and Settings\Dennis Lee Bieber>python
> ActivePython 2.3.5 Build 236 (ActiveState Corp.) based on
> Python 2.3.5 (#62, Feb 9 2005, 16:17:08) [MSC v.1200 32 bit (Intel)] on
> win32
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import os
> >>> os.system("dir /w")
> Volume in drive C is System
> Volume Serial Number is 0487-A514
>
> Directory of C:\Documents and Settings\Dennis Lee Bieber
>
> [.][..] [.eclipse]
> [.gps] [.mysqlcc] [.netbeans]
> [.refactorit] [.refactorit_please_delete_me]
> [Application Data]
> [Desktop] Eudora.lnk [Favorites]
> [Start Menu] [workspace]
>1 File(s)820 bytes
> 13 Dir(s) 22,481,092,608 bytes free
> 0
> >>> os.system("cd e:\\userdata")
> 0
> >>> os.system("dir /w")
> Volume in drive C is System
> Volume Serial Number is 0487-A514
>
> Directory of C:\Documents and Settings\Dennis Lee Bieber
>
> [.][..] [.eclipse]
> [.gps] [.mysqlcc] [.netbeans]
> [.refactorit] [.refactorit_please_delete_me]
> [Application Data]
> [Desktop] Eudora.lnk [Favorites]
> [Start Menu] [workspace]
>1 File(s)820 bytes
> 13 Dir(s) 22,481,092,608 bytes free
> 0
> >>> os.chdir("e:\\userdata")
> >>> os.system("dir /w")
> Volume in drive E is Data
> Volume Serial Number is 2626-D991
>
> Directory of e:\userdata
>
> [.] [..][Dennis Lee Bieber]
> DummyQuicken.IDX
> DummyQuicken.QDFDummyQuicken.QELDummyQuicken.QPH[Root]
>4 File(s)316,184 bytes
>4 Dir(s) 307,433,058,304 bytes free
> 0
> >>>
>
> Notice how using os.system() to do a "cd" doesn't "stick"... But if
> you used os.chdir() instead, THAT setting carries over to subsequent
> os.system() calls.
>
> --
> > == <
> > [EMAIL PROTECTED] | Wulfraed Dennis Lee Bieber KD6MOG <
> > [EMAIL PROTECTED] | Bestiaria Support Staff <
> > == <
> > Home Page:
ls files --> list packer
I would like to use the power of Python to build some list structures
for me.
Namely i have organized a bunch of folders that have soundfiles in them
and would like Python to slurp up all the .aif/.aiff (or .wav whatever)
files in a given set of directories. My friend hacked up this is perl:
$files = `ls /snd/Public/*.aiff`;
@snd_filelist = split('\n',$files);
$i = 0;
while ($file = @snd_filelist[$i]) {
print "file $i = @snd_filelist[$i]\n";
$i++;
}
The only catch with the above code (besides its hideousness hee hee) is
if you have a directory w/i the structure, but in general it works and
with this i can just put gobs of files into separate dirs pack them
into a list and then send them to my script that scrambles them and
plays them.
I would like something similar, that works with python that is more
elegant and maybe even more robust.
but i am failing miserably and my perl friends mock me.
cheers,
kp8
--
http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Dennis Lee Bieber <[EMAIL PROTECTED]> writes: > 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 a good possibility, that the clock is jumping ahead rather than that 200 seconds of actual real time is going during the time.sleep call. What happens if you replace the time.time call with something that reads the current time from an SNTP server (or equivalent) through a socket? -- http://mail.python.org/mailman/listinfo/python-list
Re: CSV module and UNICODE
Thanks a lot Skip. Sure that this will help. Learned two things: how to do it and to look at the docs for 2.5 also. These samples are not in the 2.4.2 reference guide. RudyOn 2/24/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: Rudy> I'm having problems writing unicode to a csv file.Rudy> I use the following code:...Have you tried the example UnicodeReader and UnicodeWriter classes in themodule documentation: http://www.python.org/dev/doc/devel/lib/node631.htmlWhile the csv module is 8-bit clean it knows nothing about Unicode, so yourUnicode data has to be encoded before it hits the csv module code. Your code is expecting the Unicode to go through the csv module and be encoded toutf-8 downstream in the by the eventual file object.If there are people reading this who would like to tackle something forPython 2.5, I am sure a patch that Unicodifies the csv module would bewelcome.Skip-- It is not economical to go to bed early to save the candles if the result is twins. - Chinese Proverb -- http://mail.python.org/mailman/listinfo/python-list
Re: PyAtom, a Python module for creating Atom syndication feeds
I have edited PyAtom, and now it should be in better conformance with the PEP 8 guidelines. It is available from the same place as before: http://www.blarg.net/~steveha/pyatom.tar.gz -- Steve R. Hastings"Vita est" [EMAIL PROTECTED]http://www.blarg.net/~steveha -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
On 2006-02-23, Paul Probert <[EMAIL PROTECTED]> wrote: >>In similar situation I would start to blame the hardware for the >>problem, so below a kind of checklist to go through: > > 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 Time to dowload a linux CD then, eh? -- Grant Edwards grante Yow! I am KING BOMBA of at Sicily!...I will marry visi.comLUCILLE BALL next Friday! -- http://mail.python.org/mailman/listinfo/python-list
Re: 'rar' is not recognized as an internal or external command��������
thank everyone!!!
the code:
import os
import time
source = [r'e:\temp\code',r'e:\temp\domains']
target_dir = r'e:\temp\bak'
target = target_dir+time.strftime('%Y%m%d%H%M%S')+'.rar'
rar_cmd = "D:\\Progra~1\\WinRAR\\rar.exe a -idcdp %s %s" % (target,'
'.join(source))
print rar_cmd
if os.system(rar_cmd) == 0:
print 'Successful backup to',target
else:
print 'Backup Failed!'
thanks again!
--
Ã÷Ãòä»Ã
"Ã÷Ãòä»Ã" <[EMAIL PROTECTED]> ôÃëÃüþ
news:[EMAIL PROTECTED]
>
> 'rar' is not recognized as an internal or external command,
> operable program or batch file.
>
>
> import os
> import time
> source = [r'e:\temp\code',r'e:\temp\domains']
> target_dir = r'e:\temp\bak'
> target = target_dir+time.strftime('%Y%m%d%H%M%S')+'.rar'
> rar_cmd = "rar a -idcdp %s %s" % (target,' '.join(source))
> print rar_cmd
> if os.system(r'cd D:\Program Files\WinRAR') == 0:
> if os.system(rar_cmd) == 0:
> print 'Successful backup to',target
> else:
> print 'Backup Failed!'
> else:
> print 'FAILED!!!'
>
> 'rar' is not recognized as an internal or external command,
> operable program or batch file.
>
> rar a -idcdp e:\temp\bak20060222191139.rar e:\temp\code e:\temp\domains
> Backup Failed!
>
>
> but.
>
> D:\>cd D:\Program Files\WinRAR
>
> D:\Program Files\WinRAR>rar a -idcdp e:\temp\bak20060222191139.rar
> e:\temp\code
> e:\temp\domains
>
> Creating archive e:\temp\bak20060222191139.rar
>
> Addinge:\temp\Code\Code\.classpath
OK
> Addinge:\temp\Code\Code\.project
OK
> Addinge:\temp\Code\Code\common\Code.class
OK
> Addinge:\temp\Code\Code\common\Code.java
OK
> Addinge:\temp\Code\Code\common
OK
> Addinge:\temp\Code\Code
OK
> Addinge:\temp\Code
OK
> Addinge:\temp\domains\examples.jar
OK
> Addinge:\temp\domains\medrec.jar
OK
> Addinge:\temp\domains\wls.jar
OK
> Addinge:\temp\domains\wlw.jar
OK
> Addinge:\temp\domains
OK
>
> D:\Program Files\WinRAR>
>
>
>
> why?
>
>
>
>
> --
> Ã÷Ãòä»Ã
>
>
--
http://mail.python.org/mailman/listinfo/python-list
Re: regular expresson for Unix and Dos Lineendings wanted
How about r"\s+[\n\r]+|\s+$" ?
Franz Steinhaeusler wrote:
> Hello, I need a regularexpression, which trims trailing whitespaces.
>
> While with unix line endings, it works;
> but not with Window (Dos) CRLF's:
>
>
import re
retrailingwhitespace = re.compile('(?<=\S)[ \t]+$', re.MULTILINE)
>
>
> 1) Windows
>
r="erewr\r\nafjdskl "
newtext, n = retrailingwhitespace.subn('', r)
n
>
> 1
>
newtext
>
> 'erewr\r\nafjdskl'
>
> 2) Unix
>
r="erewr\nafjdskl "
newtext, n = retrailingwhitespace.subn('', r)
n
>
> 2
>
newtext
>
> 'erewr\nafjdskl'
>
>
> Who can help me (regular expression, which works for both cases).
>
> Thank you in advance!
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python stdout and Win 2003
PS: I forgot to mention that some of the "print"s are made from wxPython timer events. Philippe Philippe Martin wrote: > Hi, > > I have a program at a customer's site that seems to have random problem > which eventually come down to not being able to read/write from serial > ports. > > I trapped all the exceptions I could think of and all of them look like > this: > *** > (ACCESS CONTROL)Fri, 24 Feb 2006 02:07:18 + : Traceback (most recent > call last): > File "C > \Python24\lib\site-packages\SC\readers\SC_IDTech_MiniSmart_RS232.py", line > 308, in Is_Card_Inserted > print 'CARD NOT INSERTED' > IOError: [Errno 9] Bad file descriptor > *** > > To me that means the print failed ... that stdout was not available > anymore. > > Am I correct? what could cause this. > > > Many thanks. > > Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Python vs. Lisp -- please explain
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 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? What kind of implications are useful to you? PJDM -- 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: Don't use SmartCookies because of the security issue. See the docs. -- http://mail.python.org/mailman/listinfo/python-list
Re: CSV module and UNICODE
Rudy> I'm having problems writing unicode to a csv file. Rudy> I use the following code: ... Have you tried the example UnicodeReader and UnicodeWriter classes in the module documentation: http://www.python.org/dev/doc/devel/lib/node631.html While the csv module is 8-bit clean it knows nothing about Unicode, so your Unicode data has to be encoded before it hits the csv module code. Your code is expecting the Unicode to go through the csv module and be encoded to utf-8 downstream in the by the eventual file object. If there are people reading this who would like to tackle something for Python 2.5, I am sure a patch that Unicodifies the csv module would be welcome. Skip -- http://mail.python.org/mailman/listinfo/python-list
Python stdout and Win 2003
Hi, I have a program at a customer's site that seems to have random problem which eventually come down to not being able to read/write from serial ports. I trapped all the exceptions I could think of and all of them look like this: *** (ACCESS CONTROL)Fri, 24 Feb 2006 02:07:18 + : Traceback (most recent call last): File "C \Python24\lib\site-packages\SC\readers\SC_IDTech_MiniSmart_RS232.py", line 308, in Is_Card_Inserted print 'CARD NOT INSERTED' IOError: [Errno 9] Bad file descriptor *** To me that means the print failed ... that stdout was not available anymore. Am I correct? what could cause this. Many thanks. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Pickling/unpickling Cookie.SimpleCookie fails with protocol=2
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')))
Protocol 2 however:
>>> pickle.loads(pickle.dumps(Cookie.Cookie('hi=there'),2))
>
>>>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': , '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).
--
===
<[EMAIL PROTECTED]> London, E14
http://www.andreasen.org/> <*>
===
--
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Re: A C-like if statement
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. ;-) -- Terry Hancock ([EMAIL PROTECTED]) Anansi Spaceworks http://www.AnansiSpaceworks.com -- http://mail.python.org/mailman/listinfo/python-list
Re: pyserial
Few notes from the Python beginner :) HTH. I do not understand what do you mean by the expression: " I can read data without try and try again." Can you be more specific please. I do not understand what do you exactly mean. AFIK the pyserial is waiting while the data occur on the serial port (so called blocking read) so it is not necessary to do some "polling" (checking the serial port periodically) . 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. import serial s = serial.Serial(port=0,baudrate=4800, timeout=20) while 1: line = s.readline() # byte = s.read(1) # or you can read No. of bytes according your needs Alternatively you can monitor buffer of the serial port and while data in it, you can read it. while fd.inWaiting() != 0: s.read(1) you can find plenty of examples about pyserial here http://tinyurl.com/p8tt5 What I am not able to figure out is why are you trying to print out input and output buffers (print self.ser.flushInput()) Does it print out something? Petr Jakes -- http://mail.python.org/mailman/listinfo/python-list
Re: why don't many test frameworks support file-output?
I don't think redirecting stdout to a file is a good resolution. How to organize the output file is very important. in my imagination, there should be one directory "log", where log files are saved. and, log files should be separated according to some method(for example, one test file one log file). also, from my point of view, there is one confusion between "log files" and normal stdout stream. stdout stream is used to display some imediate information, for example, "print" statement, or exception also can be outputed to the screen... but, stdout stream can't satisfy many requirements... for example, in one "big" project, there are many test cases, in which we need record many useful data, whether correct or not. how to do this? print statement is not a good idea. there should be another "stream" to do this. it can record infomation, same to stdout or not. so, a good log frame will satisfy: 1) "log" is not the stdout stream. 2) log files are oganized systematically, not only one big log file. 3) log information should be written to file imediately, not be delayed until one case is finished. why? test script writter may not know the test framework. if he/she write one test case with many output data(maybe it is necesary), this will consume the system memory greatly, ... 4) also, log directory should be one limited cyclic...for example, from 1 to 10. this will avoid imediate overwriting...sometimes the previous log information would be useful. ...hehe... best regards. >From: Benji York <[EMAIL PROTECTED]> >To: kanchy kang <[EMAIL PROTECTED]> >CC: python-list@python.org >Subject: Re: why don't many test frameworks support file-output? >Date: Thu, 23 Feb 2006 14:55:07 -0500 > >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. > >You can redirect stdout to a file. >-- >Benji York _ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ -- http://mail.python.org/mailman/listinfo/python-list
Re: What's up with this code?
Gregory Petrosyan wrote: > Again, thanks a lot! > I'm optimising my polynomial module as hard as possible, because when > it used native floats/integers it was very fast, but in some specific > cases -- too inaccurate. So, I migrated to decimals, and module began > to be very slow. Current success is nearly 4x speedup, and now it seems > to me that decimals are the bottleneck. Is anybody working on C version > of decimals? Is it a really hard work? (I am thinking about > re-implementing decimals in C by myself) Maybe gmpy would help? http://gmpy.sourceforge.net/ Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
"Bob Greschke" <[EMAIL PROTECTED]> writes:
> 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?
For regexps I sometimes do it with a specially created class instance.
Something like:
save = Cache_match()
if save.find(a, "3"):
print "it's here:", save.result
else:
print "no 3's here"
Implementing Cache_match is left to you as an exercise. It does make
your code a bit cleaner if you're doing lots of matching.
--
http://mail.python.org/mailman/listinfo/python-list
Re: pyFltk-1.1
george williams wrote: > By god this sounds interesting I wish I > knew what you are talking about > George-- Original Message - > From: "andreas" <[EMAIL PROTECTED]> > Newsgroups: comp.lang.python.announce > To: <[EMAIL PROTECTED]> > Sent: Wednesday, February 22, 2006 6:14 AM > Subject: ANN: pyFltk-1.1 > > > >>This is to announce the first official release of pyFltk-1.1, >>the Python bindings for the cross platform GUI toolkit fltk-1.1 This reminds me, whatever happened to the FLWM? It was sweet. -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
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 "", line 1, in -toplevel-
"test".index("a")
ValueError: substring not found
>>> "test".find("a")
-1
--
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PYTHONPATH?
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. -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote: [snip my slightly-snotty quoting of the sleep.time docs] >Thanks, but yes, I had read that before posting. One would think, > though, that the extra 200 seconds is a bit extreme to be blamable on > system scheduling granularity. I didn't intend to invoke scheduling granularity, I was implying that under high system load it may take much longer for the sleep to "come back". >I'm starting to think we've got a worm of some kind. If so, its > invisible to our Norton AV corporate. If you don't see any appreciable load on the machines (I read that you're seeing the same thing on several diverse machines elsewhere in this thread), then yes, I'd agree that /something/ strange is going on. Unfortunately this sounds like one of those things that will require "laying on of hands" to diagnose. Good luck! Let us know how it turns out, I'm curious. :) -- Benji York -- http://mail.python.org/mailman/listinfo/python-list
Re: "Temporary" Variable
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. -- http://mail.python.org/mailman/listinfo/python-list
Re: spaces at ends of filenames or directory names on Win32
Larry Bates wrote: > IMHO leading and/or trailing spaces in filenames is asking for > incompatibilities with cross-platform file access. With what platforms specifically? > Much like > using single-quote in filenames which are perfectly legal in > DOS/Windows, but Linux doesn't like much. Uh... What Linux are you using? And what FS? $ touch "'" && ls ' $ rm "'" $ -- http://mail.python.org/mailman/listinfo/python-list
Re: How would you open this file?
Thanks all! That helps out a lot! Python is kinda' cool... -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote:
> Peter Hansen wrote:
>
>> Are you saying that you believe the time.sleep(1) call is actually
>> blocking for 200 seconds? Or just that your loop (and we can only
>> guess what it looks like) is the one taking that long?
>>
>> If the former, try something like putting "print 'before'" and "print
>> 'after'" before and after the sleep, and observe what happens when you
>> run the program. I'm fairly confident in saying there's no chance
>> you'll see the "before" sit for 200s before you see the "after" and
>> that your problem lies elsewhere, not with time.sleep(1).
>>
>> If the latter, um, obviously we can't help without more info.
>>
>> -Peter
>>
>>
>>
> 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.
>
> Paul Probert
> University of Wisconsin
>
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).
In between let's try to use some logic:
If the machine and the operating system are not the cause, what have all
these machines in common?
1. The software they are running (kind of not often triggered bug)
2. The network cards used (bug in hardware or drivers)
3. Another piece of hardware common to all the machines
3. The harddisks (recalibration)
4. The network router/switch and/or the server.
Claudio
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Help with questor
I am new to python and computer programming. I am trying to save the questor.py file so that it retains it's data. My problem is that I don't really understand how to do it. I have been reviewing tutorials and I have gotten this far, but the data still doesn't save. Can someone tell me what it is I am overlooking? # questor.py # define some constants for future use kQuestion = 'question'kGuess = 'guess' # define a function for asking yes/no questionsdef yesno(prompt): ans = raw_input(prompt) return (ans[0]=='y' or ans[0]=='Y') # define a node in the question tree (either question or guess)class Qnode: # initialization method def __init__(self,guess): self.nodetype = kGuess self.desc = guess def retrieve(self, file): self.desc =
file.readline().rstrip() self.nodetype = file.readline().rstrip() if self.nodetype == kQuestion: slef.nodes = {0:Qnode(''), 1:Qnode('')} retrieve(self.nodes[0], file) retrieve(self.nodes[1], file) return def save(self, file): file.write(self.desc + "\n") file.write(self.nodetype + "\n") if self.nodetype == kQuestion: save(self.nodes[0], file) save(self.nodes[1], file) return # get the question to ask def query(self): if (self.nodetype == kQuestion): return self.desc + " " elif (self.nodetype == kGuess): return "Is it a " + self.desc + "? " else: return "Error: invalid node type!" # return new nod!
e, given
a boolean response def nextnode(self,answer): return self.nodes[answer] # turn a guess node into a question node and add new item # give a question, the new item, and the answer for that item def makeQuest( self, question, newitem, newanswer ): # create new nodes for the new answer and old answer newAnsNode = Qnode(newitem) oldAnsNode = Qnode(self.desc) # turn this node into a question node self.nodetype = kQuestion self.desc = question # assign the yes and no nodes appropriately self.nodes = {newanswer:newAnsNode, not newanswer:oldAnsNode} def traverse(fromNode): # ask the question yes = yesno( fromNode.query() ) # if this is a guess node, then did we get it right? if (fromNode.nodetype ==
kGuess): if (yes): print "I'm a genius!!!" return # if we didn't get it right, return the node return fromNode # if it's a question node, then ask another question return traverse( fromNode.nextnode(yes) ) def run(): # start with a single guess node try: f = open('c:\nodetree.txt', 'r') cont = f.readlines() known = cont.count('guess\n') del cont f.seek(0) topNode = Qnode('') retrieve(topNode, f) f.close() except: topNode = Qnode('python') known = 1done = 0 while not done: # ask questions till we get to the end result = traverse( topNode )# if result is a node, we nee!
d to add
a question if (result): item = raw_input("OK, what were you thinking of? ") print "Enter a question that distinguishes a", print item, "from a", result.desc + ":" q = raw_input() ans = yesno("What is the answer for " + item + "? ") result.makeQuest( q, item, ans ) print "Got it."# repeat until done print done = not yesno("Do another? ") print # immediate-mode commands, for drag-and-drop or execfile() executionif __name__ == '__main__': run() print raw_input("press Return>")else: print "Module questor imported." print "To run, type: questor.run()" print "To reload after changes to the source, type: reload(questor)" # end of questor.py
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Re: remote module importing (urlimport)
Sorry for the duplicate, I had some postfix issues. cheers, jure -- http://mail.python.org/mailman/listinfo/python-list
Re: Fail in sending UDP packet
No one of you has a idea??On 2/23/06, Sbaush <[EMAIL PROTECTED]> wrote: Hi all. I've attached my SendReceive class. I have e a big problem! My program create a packet, then call the send function to send this. the first time the packet is not sent, then it works perfectly!WHY??? Have you idea?? -- Sbaush -- Sbaush -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Em Qui, 2006-02-23 às 15:26 -0600, Paul Probert escreveu: >My app runs in a loop looking for changes in a database, and like a > good boy I call time.sleep(1) inside the loop. Unfortunately this > sometimes runs for 200 seconds or so, presumably while my OS is calling > Bill Gates to tell him what I've been doing. This happens under NT4, > W2k, and XP. What do people do to fix this? Thanks! What about the interpreter? Have you tried sleeping there? -- "Quem excele em empregar a força militar subjulga os exércitos dos outros povos sem travar batalha, toma cidades fortificadas dos outros povos sem as atacar e destrói os estados dos outros povos sem lutas prolongadas. Deve lutar sob o Céu com o propósito primordial da 'preservação'. Desse modo suas armas não se embotarão, e os ganhos poderão ser preservados. Essa é a estratégia para planejar ofensivas." -- Sun Tzu, em "A arte da guerra" -- http://mail.python.org/mailman/listinfo/python-list
Re: Concantenation and string slicing
DannyB wrote:
> I've written a program that takes a phrase and spits it back out
> backwards. My problem is it throws each character on a new line. I'd
> like the phrase to be on the same line. Is this possible?
>
> #Backward Message
>
> message = raw_input("Enter a message: ")
> letter = len(message)
> while (letter > 0):
> newMessage = ""
> newMessage += message[letter-1]
> letter -= 1
> print newMessage
>
>
> Thanks!!
>
> Dan
>
Better was is:
message = raw_input("Enter a message: ")
print message[::-1]
-Larry Bates
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IRC Bot trouble..
I'm currently writing a IRC bot for fun...here is the code that I have
writen so far:
import sys
import socket
import string
import time
HOST="irc.freenode.net"
PORT=6667
NICK="PapaJorgio_"
IDENT="Papa"
REALNAME="Jorgio"
CHANNEL = "#holder"
buffer = ""
clientsock=socket.socket()
clientsock.connect((HOST, PORT))
clientsock.send("NICK %s\r\n" % NICK)
clientsock.send("USER %s %s bla :%s\r\n" % (IDENT, HOST, REALNAME))
clientsock.send("JOIN %s\r\n" % (CHANNEL))
clientsock.send("PRIVMSG #holder :There's a new AI in town foo.\r\n")
while 1:
buffer=buffer+clientsock.recv(1024)
temp=string.split(buffer, "\n")
print buffer
buffer=temp.pop()
for line in temp:
print "|%s|" % repr(line)
line=string.rstrip(line)
if "-part" in line:
clientsock.send("PART #holder :I am
leet.\r\n")
elif "hello" in line:
clientsock.send("PRIVMSG #holder :Hey...\r\n")
elif "BlueInferno" in line:
clientsock.send("PRIVMSG #holder :OH NOES!
>:o\r\n")
elif "-whois" in line:
query = line.split()[4]
clientsock.send("WHOIS eff.org %s\r\n"
% query)
buffer2 = clientsock.recv(1024)
clientsock.send("PRIVMSG #holder
:%s\r\n" % buffer2)
elif "-nick" in line:
nick = line.split()[4]
clientsock.send("NICK %s\n" % nick)
elif "PING" in line:
clientsock.send("PONG %s\r\n" % line[1])
Now...it is in a very early stage (started writing it maybe 45 minutes
ago). But, I have a few questions regarding some of the code that is
not working. One of the things I ham having a big trouble with is the
-whois part. I know that I cannot assign a variable like that (Since
socket's don't really work that way..I believe?). Basically I want to
it run a -whois query and print it to the channel..but I can not get
it to print it to the channel.Another problem is the 'PING' part. I
have no clue why it doesn't respond with PONG...it should work. I am
our of ideas >:(. Does anyone have any suggestions? Thank you for your
time/help.
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Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote:
> Peter Hansen wrote:
>>Are you saying that you believe the time.sleep(1) call is actually
>>blocking for 200 seconds? Or just that your loop (and we can only guess
>>what it looks like) is the one taking that long?
>
> 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 the above is printing "dt=200" or something like that? Or just low
values slightly larger than 2s? Or a wide range of values? Can you
post samples of the print output for some of those failing runs?
-Peter
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remote module importing (urlimport)
Hi, as title implies, I wrote a simple module that allows importing modules or even packages via http, conceptually similar to zipimport (of which I learned about during the process of writing urlimport, and found it very useful). The module is fresh new as it was written today, and tested only on a few packages (moinmoin wiki and twisted). The motives: well, I kinda like the idea of having python modules available in an instant everywhere python and internet is, no pre-usage download required, especially when you need modules from different versions of python. Besides, I hope this will be a valid faculty project that I have to do. :) This module is heavily based on specification and examples from PEP 302. It can be found at: http://urlimport.codeshift.net/ Comments are welcome :) Long live python. regards, Jure -- http://mail.python.org/mailman/listinfo/python-list
Re: What's up with this code?
Again, thanks a lot! I'm optimising my polynomial module as hard as possible, because when it used native floats/integers it was very fast, but in some specific cases -- too inaccurate. So, I migrated to decimals, and module began to be very slow. Current success is nearly 4x speedup, and now it seems to me that decimals are the bottleneck. Is anybody working on C version of decimals? Is it a really hard work? (I am thinking about re-implementing decimals in C by myself) -- http://mail.python.org/mailman/listinfo/python-list
Re: How would you open this file?
Bob wrote: > I want to open a file in a function and pass the file back to main so > another function can manipulate the file, something like this: > > # begin > def open_file() > filename=open(options.filename_input,'r') > return filename > > open_file() > print filename.read() > filename.close() > # end > > But this doesn't work... It appears that "open_file()" needs a > variable, but in order to pass a variable to "open_file()" I first need > a variable... but I would rather have the function send me "filename" > without creating it main. Is that possible? > > Is there a better way to have a function open a file and pass the file > back to main than what I am trying to do? Thanks! > Your function returned filename but in the main program you didn't have anywhere for it to be saved. fp=open_file() print fp.read() fp.close() Others have pointed out the filename is a bad choice for a variable name as it is a pointer to a file object. Most tutorials and a lot of standard library code use fp. -Larry Bates -- http://mail.python.org/mailman/listinfo/python-list
Re: How would you open this file?
On Thu, 23 Feb 2006 18:01:32 -0500 in comp.lang.python, Kent Johnson
<[EMAIL PROTECTED]> wrote:
[...]
>
>filename = open_file()
>
>By the way 'filename' is a pretty bad name, since it contains a file
>object, not a string. Maybe call it f instead. ('file' is also a bad
>name because it is the name of a Python built-in function.)
I write a lot of simple scripts. Those that have input and/or output
files tend to call them infile and outfile. Given the name of the
OP's file, perhaps optfile would work for him...
Regards,
-=Dave
--
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Re: Concantenation and string slicing
On Thu, 23 Feb 2006 14:55:16 -0800, DannyB wrote: > I've written a program that takes a phrase and spits it back out > backwards. My problem is it throws each character on a new line. I'd > like the phrase to be on the same line. Is this possible? First suggestion: Put a comma at the end of the "print" line: > print newMessage, -- http://mail.python.org/mailman/listinfo/python-list
remote module importing (urlimport)
Hi, as title implies, I wrote a simple module that allows importing modules or even packages via http, conceptually similar to zipimport (of which I learned about during the process of writing urlimport, and found it very useful). The module is fresh new as it was written today, and tested only on a few packages (moinmoin wiki and twisted). The motives: well, I kinda like the idea of having python modules available in an instant everywhere python and internet is, no pre-usage download required, especially when you need modules from different versions of python. Besides, I hope this will be a valid faculty project that I have to do. :) This module is heavily based on specification and examples from PEP 302. It can be found at: http://urlimport.codeshift.net/ Comments are welcome :) Long live python. regards, Jure -- http://mail.python.org/mailman/listinfo/python-list
Re: spaces at ends of filenames or directory names on Win32
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. If they want to leave the files on a Mac, there is no problem. IMHO leading and/or trailing spaces in filenames is asking for incompatibilities with cross-platform file access. Much like using single-quote in filenames which are perfectly legal in DOS/Windows, but Linux doesn't like much. -Larry Bates -- http://mail.python.org/mailman/listinfo/python-list
Re: a little more help with python server-side scripting
John Salerno wrote: > Paul Boddie wrote: > > > No, it means that you either write Python programs which produce pages > > as output, according to the CGI specification, or that you embed Python > > code inside ASP files, as described in the above document. > > > I haven't used ASP, and I've been working hard to remove from my memory > > any trace of similar systems (eg. JSP), but I imagine that if you want > > to include normal Python programs inside ASP files, there may be a way > > of using some kind of "include" directive. Take a look at the above > > document for some ideas. > > Why do you mention ASP though? Can't this be done without it? You mean, can't you just write normal HTML files, add some kind of "include" directive, call them something ending in .html, and then have the server produce a combination of normal HTML and the output from Python code? Well, not really, since that (apart from the .html extension on the filename) is a description of what ASP is about, more or less. But yes, if you want to run Python code without doing strange things with ASP files, then just write a program (not a Web page, but an actual Python program) as described in the Microsoft document (or virtually any introduction to CGI with Python), upload it into the appropriate folder/directory with a filename ending in .py and test it out! See this recipe for other examples (found using the search text "CGI Python" with Google): http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/52220 Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Concantenation and string slicing
Wow - thats simple =). Thanks a ton!! -- 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? No. [...] > > ? They say: > > "Please note that you may map .py to .html extension. However, if you > set this mapping, .html will not work with the normal html tags anymore." > > But I don't know what this means about 'mapping' the extension and what > it means that html tags won't work anymore. John There is a configuration section in the IIS management tool (inetmgr.exe) called 'Application Mappings' which maps file extensions to applications. For example, on my (WinXP) machine I have: .aspx --> C:\WINDOWS\Microsoft.NET\Framework\v1.14322\aspnet_isapi.dll .asp --> C:\WINDOWS\system32\inetsrv\asp.dll .php --> C:\Program Files\PHP\Php51\php-cgi.exe among others. So if IIS receives a request for a url with one of these extensions it passes that request on to the relevant program. You could map '.py' to 'python.exe %s %s' but any '.py' files would have to be pure Python. IIS doesn't need any help with standard, static .html requests, it can serve those itself. It may be possible to map '.html' to any of the three applications above and still have static HTML pages function identically (even if this would create a pointless overhead ), however you couldn't map '.html' to 'python.exe' and expect anything meaningful - there is nothing like 'python-cgi.exe' that understands HTML with or without inlined python code. Gerard -- http://mail.python.org/mailman/listinfo/python-list
Re: Concantenation and string slicing
add a dash like shown below >>> print newMessage, -- http://mail.python.org/mailman/listinfo/python-list
Re: What's up with this code?
Gregory Petrosyan wrote: > Oh, by the way, is there any documentation about time of execution of > standard functions? Nope. The reason is (A) that's a lot of work, (B) there are too many caveats in practice to make such information useful, (C) any such spec might corner the possible implementations in a later version. > is len(list) O(1) or O(n), etc) and is there any C version of decimal? len(list) is O(1), list[n] is O(1), and if you (and others) continue using decimal and it gets popular, rest assured that it will get faster. Also, dictionary access is \Theta(1) (but only because you run on machines with quite finite limitations). The general Python rule when writing is "only worry about fast enough" and optimize only after the code works and it needs to be faster. Further, to determine speed, measure (use the timeit module) rather than guess. Nobody's intuition is great WRT performance, and you'd be shocked at the number of hours people spend speeding up a chunk of code that cannot possibly substantially affect an applications performance. --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: How would you open this file?
Bob wrote:
> I want to open a file in a function and pass the file back to main so
> another function can manipulate the file, something like this:
>
> # begin
> def open_file()
> filename=open(options.filename_input,'r')
> return filename
>
> open_file()
> print filename.read()
> filename.close()
> # end
You need to assign the result of open_file() to a variable. The
'filename' variable inside open_file() is not available outside the
function:
filename = open_file()
By the way 'filename' is a pretty bad name, since it contains a file
object, not a string. Maybe call it f instead. ('file' is also a bad
name because it is the name of a Python built-in function.)
Kent
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Concantenation and string slicing
I've written a program that takes a phrase and spits it back out
backwards. My problem is it throws each character on a new line. I'd
like the phrase to be on the same line. Is this possible?
#Backward Message
message = raw_input("Enter a message: ")
letter = len(message)
while (letter > 0):
newMessage = ""
newMessage += message[letter-1]
letter -= 1
print newMessage
Thanks!!
Dan
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How would you open this file?
I want to open a file in a function and pass the file back to main so another function can manipulate the file, something like this: # begin def open_file() filename=open(options.filename_input,'r') return filename open_file() print filename.read() filename.close() # end But this doesn't work... It appears that "open_file()" needs a variable, but in order to pass a variable to "open_file()" I first need a variable... but I would rather have the function send me "filename" without creating it main. Is that possible? Is there a better way to have a function open a file and pass the file back to main than what I am trying to do? Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: Using a list of RGB data for Canvas widget? [(R1, G1, B1), (R2, G2, B2) etc.]
Just to clarify. I'm not asking for any code. A ink or explination of how to convert a list of this type to BitmapImage or PhotoImage data would be very helpful. -- http://mail.python.org/mailman/listinfo/python-list
Re: spaces at ends of filenames or directory names on Win32
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. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: "Temporary" Variable
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.
How about target instead?
> print spam #debugging purposes
> while 1:
> guess = raw_input("What's your guess, friend? ")
Why don't you stick a "print guess" in here to see what your guess is?
(Hint: what is the difference between 1 and '1'?)
> if guess == spam:
> print "You got it! Nicely done."
> break
> elif guess < spam:
> print "Sorry, too low. Try again."
> elif guess > spam:
> print "Sorry, too high. Try again."
> else:
> print "You guessed ", guess
>> You could try this:
>>
>> while 1:
>> var = raw_input("Give me some data! ")
>> if var == "some data":
>> print "Success!"
>> break
>> else:
>> print "No good, try again."
> That works fine with strings and when "some_data" is hardcoded. I run
> into trouble when "some data" is replaced with a number, unquoted. It
> simply says "No good, etc"
Try this, at a command line:
5 == '5'
and see what you get.
--
Steven.
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Re: time.sleep(1) sometimes runs for 200 seconds under windows
Peter Hansen wrote:
>Are you saying that you believe the time.sleep(1) call is actually
>blocking for 200 seconds? Or just that your loop (and we can only guess
>what it looks like) is the one taking that long?
>
>If the former, try something like putting "print 'before'" and "print
>'after'" before and after the sleep, and observe what happens when you
>run the program. I'm fairly confident in saying there's no chance
>you'll see the "before" sit for 200s before you see the "after" and that
>your problem lies elsewhere, not with time.sleep(1).
>
>If the latter, um, obviously we can't help without more info.
>
>-Peter
>
>
>
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.
Paul Probert
University of Wisconsin
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Re: A C-like if statement
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.
> I think your way would work if .find() were replaced with .index(). I'm
> just trying to clean up an if/elif tree a bit, so using try would make
> things bigger.
Then write a function! Instead of calling the try..except block in every
branch directly, pull it out into a function:
def test(s,what):
try:
i = s.index(what)
print "It's here: ", i
except ValueError:
print "No 3's here"
--
Steven.
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Re: time.sleep(1) sometimes runs for 200 seconds under windows
Benji York wrote: >Paul Probert wrote: > > Hi, My app runs in a loop looking for changes in a database, and like > > a good boy I call time.sleep(1) inside the loop. Unfortunately this > > sometimes runs for 200 seconds or so, presumably while my OS is > > calling Bill Gates to tell him what I've been doing. This happens > > under NT4, W2k, and XP. What do people do to fix this? Thanks! > > From the docs for time.sleep: > > The actual suspension time may be less than that requested because > any caught signal will terminate the sleep() following execution of > that signal's catching routine. Also, the suspension time may be > longer than requested by an arbitrary amount because of the > scheduling of other activity in the system. >-- >Benji York > > Benji, Thanks, but yes, I had read that before posting. One would think, though, that the extra 200 seconds is a bit extreme to be blamable on system scheduling granularity. I'm starting to think we've got a worm of some kind. If so, its invisible to our Norton AV corporate. Paul Probert University of Wisconsin -- http://mail.python.org/mailman/listinfo/python-list
Re: Unexpected timing results
On Thu, 23 Feb 2006 10:07:14 -0600, Larry Bates wrote: >> Of course I expect timer2 should take longer to execute in total, >> because it is doing a lot more work. But it seems to me that all that >> extra work should not affect the time measured, which (I imagine) should >> be about the same as timer1. Possibly even less as it isn't timing the >> setup of the for loop. ... > In timer2 you are making a million extra calls to timer() > function and doing a million additions and a million > subtractions that are not being done in timer1() function. > I think that is where your "extra" time is located. But those extra additions, subtractions, etc. are not being timed, because they are outside the part where the stopwatch is ticking, in a manner of speaking. I know that timer2 will take longer to execute than timer1. That's not the surprising bit. But I'm not measuring all the execution time, only part of it, and not all that execution time is being timed. The only extra work I can see is a call to timer() each loop. The first call shouldn't count, because it happens before the clock starts. Is calling time.time() really such as expensive operation, especially when I've rebound the name so as to avoid a name lookup? I guess it is: I've run two more tests, both going back to the form of timer1, but changing the function being timed. The first uses math.sin. The second uses time.timer. Here is the code: def timer3(): timer = time.time func = math.sin itr = [None] * 100 t0 = timer() for _ in itr: func(0.1) t1 = timer() return t1 - t0 def timer4(): timer = time.time func = timer itr = [None] * 100 t0 = timer() for _ in itr: func() t1 = timer() return t1 - t0 And the results: >>> timer.timer3() 0.64760088920593262 >>> timer.timer4() 5.2274949550628662 It looks like the time function under Linux at least is very slow. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: PyDev/Eclipse Help
Greg Lindstrom wrote: > I am running Python 2.4 on Windows XP "Professional" and Eclipse 3.1. I > would like to take a look at PyDev on Eclipse and downloaded the PyDev > (1.0.2?) via the Help->SotwareUpdates->FindAndInstall wizard. Then then > go to create a Python Project with File->New->Project and then select > Pydev->Pydev Project and get an Error Dialog stating: "The selected > wizard could not be started. Reason: Plug-in org.python.pydev was > unable to load class > org.python.pydev.ui.wazards.project.PythonProjectWizard." Can any of > you wizards tell me what this means (well, OK, I *know* it means I can't > load PythonProjectWizard, but you get my drift, right?). > > Thanks for your help...see yo in Dallas! > --greg > > I don't know the answer, but you might get one from the Pydev forum http://sourceforge.net/forum/forum.php?forum_id=293649 Don. -- http://mail.python.org/mailman/listinfo/python-list
Re: 2.4.2 + Zone Alarm
On 20 Feb 2006 16:26:15 -0800, "DannyB" <[EMAIL PROTECTED]> wrote: >I believe this issue is known - I haven't found a way around it. > >ZoneAlarm seems to be stopping IDLE from running. >I get two errors: > >"Socket Error: Connection refused" >and >"IDLE's subprocess didn'tt make connection. Either IDLE can't start a >subprocess or personal firewall software is blocking the connection." > >I know they are both due to ZA - I've set up ZA to allow Python to >access the internet w/o prompting me (even though I now it doesn't >actually access the internet.) > >This usually happens after I create a script and run it in the GUI - if >the script ends up being a never ending loop - I X out of IDLE to stop >it. The next time I try to run a script I get the errors until I >reboot the computer. > >IIs there a fix? I'm pretty sure that this problem started with 2.3.1 >(i'm suing 2.4.2). I get an the same problem in those circumstances, although I can't remember if I get that error message (and I use ZoneAlarm). Windows task manager shows pythonw.exe still running and terminating the process allows IDLE to start normally. Easier than rebooting. PythonWin doesn't suffer this problem, btw. DaveM -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Claudio Grondi wrote: >In similar situation I would start to blame the hardware for the >problem, so below a kind of checklist to go through: > > 1. have you changed any hardware? > 2. have you installed new drivers? > 3. have you connected via USB/Firewire/IDE or other interfaces/ports >etc. some new devices? > 4. have you installed new BIOS? > 5. is your RAM ok? > 6. are you sure there is no CD/DVD in your CD/DVD drive? > 7. are you sure there is no floppy disk in your floppy drive? > 8. are you sure your CPU/motherboard/RAM is not overheating? > >Claudio > > Claudio, 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 Paul Probert University of Wisconsin -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
On 2/23/06, Claudio Grondi <[EMAIL PROTECTED]> wrote: Paul Probert wrote:> Hi,> My app runs in a loop looking for changes in a database, and like a> good boy I call time.sleep(1) inside the loop. Unfortunately this> sometimes runs for 200 seconds or so, presumably while my OS is calling > Bill Gates to tell him what I've been doing. This happens under NT4,> W2k, and XP. What do people do to fix this? Thanks!>> Paul Probert> University of Wisconsin>In similar situation I would start to blame the hardware for the problem, so below a kind of checklist to go through: 1. have you changed any hardware? 2. have you installed new drivers? 3. have you connected via USB/Firewire/IDE or other interfaces/portsetc. some new devices? 4. have you installed new BIOS? 5. is your RAM ok? 6. are you sure there is no CD/DVD in your CD/DVD drive? 7. are you sure there is no floppy disk in your floppy drive? 8. are you sure your CPU/motherboard/RAM is not overheating? Claudio--http://mail.python.org/mailman/listinfo/python-listSo what exactly does the loop do? Try running the loop without sleep and then see how long that takes. -- -Ivan -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote: >My app runs in a loop looking for changes in a database, and like a > good boy I call time.sleep(1) inside the loop. Unfortunately this > sometimes runs for 200 seconds or so, presumably while my OS is calling > Bill Gates to tell him what I've been doing. This happens under NT4, > W2k, and XP. What do people do to fix this? Thanks! Are you saying that you believe the time.sleep(1) call is actually blocking for 200 seconds? Or just that your loop (and we can only guess what it looks like) is the one taking that long? If the former, try something like putting "print 'before'" and "print 'after'" before and after the sleep, and observe what happens when you run the program. I'm fairly confident in saying there's no chance you'll see the "before" sit for 200s before you see the "after" and that your problem lies elsewhere, not with time.sleep(1). If the latter, um, obviously we can't help without more info. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote: > Hi, > My app runs in a loop looking for changes in a database, and like a > good boy I call time.sleep(1) inside the loop. Unfortunately this > sometimes runs for 200 seconds or so, presumably while my OS is calling > Bill Gates to tell him what I've been doing. This happens under NT4, > W2k, and XP. What do people do to fix this? Thanks! > > Paul Probert > University of Wisconsin > In similar situation I would start to blame the hardware for the problem, so below a kind of checklist to go through: 1. have you changed any hardware? 2. have you installed new drivers? 3. have you connected via USB/Firewire/IDE or other interfaces/ports etc. some new devices? 4. have you installed new BIOS? 5. is your RAM ok? 6. are you sure there is no CD/DVD in your CD/DVD drive? 7. are you sure there is no floppy disk in your floppy drive? 8. are you sure your CPU/motherboard/RAM is not overheating? Claudio -- http://mail.python.org/mailman/listinfo/python-list
Re: time.sleep(1) sometimes runs for 200 seconds under windows
Paul Probert wrote: > Hi, My app runs in a loop looking for changes in a database, and like > a good boy I call time.sleep(1) inside the loop. Unfortunately this > sometimes runs for 200 seconds or so, presumably while my OS is > calling Bill Gates to tell him what I've been doing. This happens > under NT4, W2k, and XP. What do people do to fix this? Thanks! From the docs for time.sleep: The actual suspension time may be less than that requested because any caught signal will terminate the sleep() following execution of that signal's catching routine. Also, the suspension time may be longer than requested by an arbitrary amount because of the scheduling of other activity in the system. -- Benji York -- http://mail.python.org/mailman/listinfo/python-list
Re: a little more help with python server-side scripting
Paul Boddie wrote: > No, it means that you either write Python programs which produce pages > as output, according to the CGI specification, or that you embed Python > code inside ASP files, as described in the above document. > I haven't used ASP, and I've been working hard to remove from my memory > any trace of similar systems (eg. JSP), but I imagine that if you want > to include normal Python programs inside ASP files, there may be a way > of using some kind of "include" directive. Take a look at the above > document for some ideas. Why do you mention ASP though? Can't this be done without it? -- http://mail.python.org/mailman/listinfo/python-list
time.sleep(1) sometimes runs for 200 seconds under windows
Hi, My app runs in a loop looking for changes in a database, and like a good boy I call time.sleep(1) inside the loop. Unfortunately this sometimes runs for 200 seconds or so, presumably while my OS is calling Bill Gates to tell him what I've been doing. This happens under NT4, W2k, and XP. What do people do to fix this? Thanks! Paul Probert University of Wisconsin -- http://mail.python.org/mailman/listinfo/python-list
Re: spaces at ends of filenames or directory names on Win32
rtilley wrote: > # Spaces are present before and after the XXX > filename = ' XXX ' > > new_filename = filename.strip() > > if new_filename != filename: > print filename > > Macs allow these spaces in file and folder names. Which is OK. The > problem arises when the file or folder is copied to a PC running Windows > from a Mac. Windows allows the Mac to copy the file to it, but when > Windows itself attempts to do anything with the file it strips the > spaces and then tries to move it, copy it, etc and complains that the > file isn't there! > > I can rectify this by striping the spaces from the files and folders on > the Mac before they are copied to the PC or mounting the Windows share > from the Mac and running a recursive strip program I wrote, but Windows > will not allow the whitespace removal directly from within Windows > how annoying! > > For example... tell windows to move a file named ' XXX ' (one space > before and one space after the filename). Windows will complain that > file 'XXX' does not exist. It's correct of course, 'XXX' does not exist, > but ' XXX ' does indeed exist. > > Can anyone rescue me from this madness :( Use quatation marks. >copy tt1.txt " XXX " 1 file(s) copied. >dir XXX Volume in drive C is PXXABA Volume Serial Number is 90C0-740E Directory of C:\Documents and Settings\Desktop File Not Found >dir " XXX Volume in drive C is PXXABA Volume Serial Number is 90C0-740E Directory of C:\Documents and Settings\Desktop 02/06/2006 07:05p 10 XXX 1 File(s) 10 bytes 0 Dir(s) 2,063,822,848 bytes free >dir *. Volume in drive C is PXXABA Volume Serial Number is 90C0-740E Directory of C:\Documents and Settings\Desktop 02/23/2006 03:20p. 02/23/2006 03:20p.. 02/06/2006 07:05p 10 XXX 01/20/2006 04:53pAGMP 01/20/2006 04:53pBPWR Fe-Mn 01/20/2006 04:53pGM 01/20/2006 04:53pIDEM response 01/20/2006 04:53pmsgs 01/20/2006 04:53pNew Folder 02/08/2006 05:29pNew Folder (2) 01/20/2006 04:53pOCAML 01/20/2006 04:53preview05 01/20/2006 04:53pscanned docs 02/17/2006 03:07pUSS repository 1 File(s) 10 bytes 13 Dir(s) 2,063,822,848 bytes free Note that the trailing quote isn't always necessary. Note from the last listing that the XXX file is indented one space. > > Many Thanks, > Brad -- http://mail.python.org/mailman/listinfo/python-list
Re: a little more help with python server-side scripting
John Salerno wrote: > John Salerno wrote: > > > Unfortunately, I don't completely understand what it is I need to do > > now. Where do I put the path they mentioned? And what do they mean by my > > script path? > > 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. >From what I understand of the situation, noting that I haven't used IIS with Python at all as far as I remember (and it'd be about six or seven years ago if I did), you're using Windows hosting where .py files get special treatment - ie. they don't get served up as text files but are executed somehow - and that this is probably configured by your provider as described in this document (found via Google using the search text "IIS Python"): http://support.microsoft.com/default.aspx?scid=kb%3Ben-us%3B276494 > But does this mean I can simply include Python code in my > HTML files, and then give my HTML files a .py extension? No, it means that you either write Python programs which produce pages as output, according to the CGI specification, or that you embed Python code inside ASP files, as described in the above document. > I don't know how to test this because I don't know how to write inline code > yet. Is > it something like: > > <%@ include file=something %> I haven't used ASP, and I've been working hard to remove from my memory any trace of similar systems (eg. JSP), but I imagine that if you want to include normal Python programs inside ASP files, there may be a way of using some kind of "include" directive. Take a look at the above document for some ideas. > ? They say: > > "Please note that you may map .py to .html extension. However, if you > set this mapping, .html will not work with the normal html tags anymore." > > But I don't know what this means about 'mapping' the extension and what > it means that html tags won't work anymore. I think they're just trying to say that if you decide that your Python programs should have a .html extension and still be executed as Python programs, don't expect the server to serve up HTML pages any more. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: problem with newlines in regexp substitution
Florian Schulze wrote:
> See the following results:
>
> Python 2.3.5 (#62, Feb 8 2005, 16:23:02) [MSC v.1200 32 bit (Intel)] on
> win32
> Type "help", "copyright", "credits" or "license" for more information.
>
import re
s = "1"
re.sub('1','\\n',s)
>
> '\n'
>
'\\n'
>
> '\\n'
>
re.sub('1',r'\\n',s)
>
> '\\n'
>
s.replace('1','\\n')
>
> '\\n'
>
repl = '\\n'
re.sub('1',repl,s)
>
> '\n'
>
s.replace('1',repl)
>
> '\\n'
>
> Why is the behaviour of the regexp substitution so weird and can I
> prevent that? It breaks my asumptions and thus my code.
>
> Regards,
> Florian Schulze
>
"Why" questions are always tough to answer. E.g.: Why are we here?
The answer to "what is happening" is much easier. Strings passed to the
regex engine are processed first, so escapes must be escaped. This is
why raw strings were invented. If it weren't for these, I'd still be
using perl. In raw strings, as you have noticed, a '\' is already
escaped. In the olden days, you'd have to type "" to mean a literal
backslash, so creating a literal backslash in a regex that produced a
string that would then itself be used in a regex would be
'', which scared me away from Python for a couple of
years (rmember, the final printed product would be '\').
That patently doesn't answer your question, but here is something to ponder:
py> s.replace('1',repl)[0]
'\\'
py> print s.replace('1',repl)
\n
James
--
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Re: spaces at ends of filenames or directory names on Win32
rtilley wrote: > Larry Bates wrote: >> How about not naming files with leading and trailing spaces on >> the Mac? Seems like a bad habit that needs breaking ;-). >> >> -Larry Bates > > Users will be users! Tell that to the guys and gals on Macs who like to > make a folder sort based on the number of spaces they've placed in the > front of the filenames :) Sounds like you should change leading/trailing spaces to something like underlines instead of stripping them off the filename. That way you preserve the character positions, visually the filenames are very close. Problem is that underlines sort to bottom instead of to the top of a list of files. On second thought, if you replace spaces with dashes they will sort correctly, but they will look odd. Pick your poison. -Larry -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Urwid 0.9.0 - Console UI library
Thomas Dickey wrote: > Ian Ward <[EMAIL PROTECTED]> wrote: > >> - New raw_display module that handles console display without relying >>on external libraries. This module was written as a work around >>for the lack of UTF-8 support in the standard version of ncurses. > > > The "standard version" of ncurses has supported UTF-8 for the past few > years. You may perhaps mean "default configuration", which has a > different connotation. > You're right. I was looking for a short way of saying "a work around for lack of UTF-8 support in the version of ncurses that Python links against by default". Ian Ward -- http://mail.python.org/mailman/listinfo/python-list
Re: "Temporary" Variable
[EMAIL PROTECTED] wrote in news:1140725159.143882.202630
@j33g2000cwa.googlegroups.com:
>
> Steven D'Aprano wrote:
>> You could try this:
>>
>> while 1:
>> var = raw_input("Give me some data! ")
>> if var == "some data":
>> print "Success!"
>> break
>> else:
>> print "No good, try again."
> That works fine with strings and when "some_data" is hardcoded. I run
> into trouble when "some data" is replaced with a number, unquoted. It
> simply says "No good, etc"
Raw_input isn't giving you what you think it is. You're comparing it to
an integer, not a string. Does that help?
--
http://mail.python.org/mailman/listinfo/python-list
Re: MySQLdb slow on MySQL 5
Gerhard Häring wrote: > > Maybe you're running in autocommit mode. I. e. an implicit COMMIT is > done for each insert. This slows any database down. > > Or are you calling commit() yourself too often? > > -- Gerhard I'm not calling COMMIT at all. I'm using MyISAM tables. I'll check on autocommit. Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: spaces at ends of filenames or directory names on Win32
Larry Bates wrote: > How about not naming files with leading and trailing spaces on > the Mac? Seems like a bad habit that needs breaking ;-). > > -Larry Bates Users will be users! Tell that to the guys and gals on Macs who like to make a folder sort based on the number of spaces they've placed in the front of the filenames :) -- http://mail.python.org/mailman/listinfo/python-list
Re: How to move optparse from main to function?
Yes the documentation is helpful, but I wouldn't have been able to do what you did in your code by just looking at section 6.21.2.9. I thought I could put "parser = parserSetup()" and "(options, args) = parser.parse_args()" in the function. Thanks for helping out with that! -- http://mail.python.org/mailman/listinfo/python-list
Re: spaces at ends of filenames or directory names on Win32
rtilley wrote: > # Spaces are present before and after the XXX > filename = ' XXX ' > > new_filename = filename.strip() > > if new_filename != filename: > print filename > > Macs allow these spaces in file and folder names. Which is OK. The > problem arises when the file or folder is copied to a PC running Windows > from a Mac. Windows allows the Mac to copy the file to it, but when > Windows itself attempts to do anything with the file it strips the > spaces and then tries to move it, copy it, etc and complains that the > file isn't there! > > I can rectify this by striping the spaces from the files and folders on > the Mac before they are copied to the PC or mounting the Windows share > from the Mac and running a recursive strip program I wrote, but Windows > will not allow the whitespace removal directly from within Windows > how annoying! > > For example... tell windows to move a file named ' XXX ' (one space > before and one space after the filename). Windows will complain that > file 'XXX' does not exist. It's correct of course, 'XXX' does not exist, > but ' XXX ' does indeed exist. > > Can anyone rescue me from this madness :( > > Many Thanks, > Brad How about not naming files with leading and trailing spaces on the Mac? Seems like a bad habit that needs breaking ;-). -Larry Bates -- http://mail.python.org/mailman/listinfo/python-list
Re: How to move optparse from main to function?
The module documentation helped me construct the meat of my code bu it didn't lend a hand on how to build the real meal deal the way Jason's explanation did. -- http://mail.python.org/mailman/listinfo/python-list
Re: a little more help with python server-side scripting
John Salerno wrote: > Unfortunately, I don't completely understand what it is I need to do > now. Where do I put the path they mentioned? And what do they mean by my > script path? 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: <%@ include file=something %> ? They say: "Please note that you may map .py to .html extension. However, if you set this mapping, .html will not work with the normal html tags anymore." But I don't know what this means about 'mapping' the extension and what it means that html tags won't work anymore. -- http://mail.python.org/mailman/listinfo/python-list
Re: "Temporary" Variable
Steven D'Aprano wrote:
> [EMAIL PROTECTED] wrote:
>
> > Problem: I wish to run an infinite loop and initialize a variable on
> > each iteration. Sort of like, "Enter Data", test it, "No good!", "Next
> > Try?", test it, etc. What I've tried is simply while 1: var1 =
> > raw_input, test var1, then run through the loop again. What results is
> > var1 gets and keeps the first value it receives.
>
> Hmmm. I get a syntax error.
>
> >>> while 1:
> ... var1 = raw_input
> ... test var1
>File "", line 3
> test var1
> ^
> SyntaxError: invalid syntax
>
> How about posting your actual code?
Soitenly.
#!/usr/bin/python
#simple guessing game, with numbers
import random
spam = random.randint(1, 100)
print spam #debugging purposes
while 1:
guess = raw_input("What's your guess, friend? ")
if guess == spam:
print "You got it! Nicely done."
break
elif guess < spam:
print "Sorry, too low. Try again."
elif guess > spam:
print "Sorry, too high. Try again."
else:
print "You guessed ", guess
> You could try this:
>
> while 1:
> var = raw_input("Give me some data! ")
> if var == "some data":
> print "Success!"
> break
> else:
> print "No good, try again."
That works fine with strings and when "some_data" is hardcoded. I run
into trouble when "some data" is replaced with a number, unquoted. It
simply says "No good, etc"
> --
> Steven.
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to move optparse from main to function?
As pointed out, the module documentation is helpful.
For your 'test' option, I don't think 'action="count"' is the best
action. 'Test' is basically an on/off option, so why count it? I would
use:
parser.add_option("-t", "--test", action="store_true",
dest="optparse_test", default=False, help="testing optparse")
Then your code can use
if options.optparse_test == True: ...
or briefer:
if options.optparse_test: ...
As for putting the optparse code into a function, I sometimes use:
def parserSetup():
"""Return a configured option parser for this program."""
parser = OptionParser()
parser.add_option( ... your option stuff ... )
parser.add_option( ... )
return parser
if __name__=="__main__":
parser = parserSetup()
(options, args) = parser.parse_args()
# Then in your case:
if options.optparse_test: ...
--
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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. You can redirect stdout to a file. -- Benji York -- http://mail.python.org/mailman/listinfo/python-list
Re: A C-like if statement
On Thu, 23 Feb 2006 12:04:38 -0700 in comp.lang.python, "Bob Greschke"
<[EMAIL PROTECTED]> wrote:
>
>"Roy Smith" <[EMAIL PROTECTED]> wrote in message
>news:[EMAIL PROTECTED]
[...]
>> 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. :)
I think you'll find that BASIC doesn't allow it either...
Of the "missing" "features" of Python, this one is waay down on my
list. In fact, it's not there at all. What I _really_ miss is
do{...}while. The best workaround I've found is unaesthetic, IMHO:
while 1:
# stuff
if exit_condition: break
Regards,
-=Dave
--
Change is inevitable, progress is not.
--
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Re: editor for Python on Linux
Mladen Adamovic wrote: > Hi! > > I wonder which editor or IDE you can recommend me for writing Python > programs. I tried with jEdit but it isn't perfect. Eclipse + pydev -- http://mail.python.org/mailman/listinfo/python-list
Re: pyserial
Hi,
I never found the need to flush anything and I always use inWaiting prior to
reader.
A+
Philippe
Mimi wrote:
> Hi,
> I use the pyserial to read data from a serial port.
> My code is in window Xp and python 2.4. when I use Hyperteminal I can
> read data without try and try again that it is not the case with
> pyserial library.
> anyone can help me ?
> this is a part of my code:
>
> self.ser = serial.Serial()
> self.ser.baudrate = 9600
> self.ser.port = 3
> self.ser.timeout= 10
> self.ser.bytesize = serial.EIGHTBITS
> self.ser.stopbits = serial.STOPBITS_ONE
> self.ser.xonxoff = 0
>
>nbHisto = 144
>for i in range(0,nbHisto):
> while 1:
> print self.ser.flushInput()
> print self.ser.flushOutput()
> cmd = "%xs\r" %(i+1)
> self.ser.write("%s" %cmd)
>
> #print cmd
>
> histo = self.ser.readlines()
> #print histo
> if histo:
> if histo=="\r\n":
> pass
> else:
>
> histoAdresse = int(histo[0].strip('\r\n'))
> print histoAdresse
>
> try:
> dateHisto_cur = listeFenetreNonNul["%s"
> %(histoAdresse)]
> print dateHisto_cur
>
>
> self.ecrireHistoDansFic(histo,histoAdresse,dateHisto_cur,histoAdresse,i)
> break
> except:
>
> print "Adresse pas trouvee dans le
> systeme %s" %(histoAdresse)
> break
> # End if
>
> sleep(10)
> # End while
> #End for
>
>
> self.ser.close()
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Re: Python vs. Lisp -- please explain
> Paul Rubin wrote: > I think both of you are missing the point of the question, which is > that Lisp is dynamically typed exactly the way Python is and maps to > Python almost directly; yet good Lisp implementations are much faster > than CPython. 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. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to move optparse from main to function?
Doesn't the module documentation ... http://docs.python.org/lib/optparse-putting-it-all-together.html ... tell you what you need? Giles -- http://mail.python.org/mailman/listinfo/python-list
execfile time out?
Hello,
I'd like to do something like:
try:
execfile_timeout("somefile.py",5) # time out after 5 seconds
except TimeOutError:
print "this timed out!"
is there something that would do this? I'd like to call "somefile.py", but if
it has
an infinite loop, I don't want to freeze at that point. If it helps, this part
of
the code is already running in a thread, so I guess I could time-out the thread
rather than the execfile. Is there an easy way to do that?
thanks,
Brian Blais
--
-
[EMAIL PROTECTED]
http://web.bryant.edu/~bblais
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Re: A C-like if statement
But maybe we're talking about string methods so to get an exception we'd want to use "index" instead of "find". Giles -- http://mail.python.org/mailman/listinfo/python-list
execfile error exception line number?
Hello,
I'd like to do the following:
import sys
try:
execfile("somefile.py")
except:
s=sys.exc_info()
print "Error '%s' happened on line %d" % (s[1],s[2].tb_lineno)
(I'm going to replace the print later with a gui dialog)
how can I get the line number in "somefile.py" where the error occurs? When I
do the
above, I get the line number in the script which calls execfile instead.
thanks,
Brian Blais
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-
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Re: A C-like if statement
"Roy Smith" <[EMAIL PROTECTED]> wrote in message
news:[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. This
> means you often need an "extra" line compared to a classic C "assign
> and test" idiom such as you have above. I, like you, often miss the
> compactness of the C idiom, but there it is.
>
> It's also unpythonic to return magic values to indicate failure.
> Throwing an exception would be the more normal way of doing it. So,
> I'd expect the above to translate into something like:
>
> 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. :)
I think your way would work if .find() were replaced with .index(). I'm
just trying to clean up an if/elif tree a bit, so using try would make
things bigger.
Thanks!
Bob
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Re: MySQLdb slow on MySQL 5
[EMAIL PROTECTED] wrote: > Hi. > > I have a Python program that parses a file and inserts records into a > database with MySQLdb. I recently upgraded to MySQL 5.0.8, and now my > parser runs *really* slow. Writing out to CSV files is fine, but when I > try to insert the same records in a MySQL5 database, it slows to a > crawl. Using MySQL 4.1 seems fine. The data seems to be inserted > correctly, it's just really slow. > > Has anyone else noticed a similar problem using MySQL5 and MySQLdb? Maybe you're running in autocommit mode. I. e. an implicit COMMIT is done for each insert. This slows any database down. Or are you calling commit() yourself too often? -- Gerhard -- http://mail.python.org/mailman/listinfo/python-list
Re: need help regarding compilation
Kent Johnson wrote: > fidlee wrote: > >>Try this: > >> > >>def fac(x): > >> if x<=1:return 1 > >> return x*fac(x-1) > > > > > > I am still getting an error in compilation. Would be really thankful if > > someone could tell me as to what is going wrong. > > Try running the compiler under Java 1.4, or just run the class in the > jython interpreter without compiling it first. For simple examples like > this you don't need to compile, just run it with >jython factor.py > > Kent Thanks. i noticed that it runs. But why is it throwing a compilation error in my case here? -- http://mail.python.org/mailman/listinfo/python-list
frozen codecs
I'm having a problem with freeze vs Python-2.4. I need to get various codecs into the freeze, but suspect I need to explicitly import them. Must I just import codecs or all the ones I'm likely to use? -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
How to move optparse from main to function?
I'm playing around with optparse and created the code below. How do I
move that to a function and what variable do I pass?
>From the documentation it seems like "options.optparse_test" would have
the value zero if its option, either "-t" or "--test", is not detected
at the command line. When I issue "print options.optparse_test" when no
command options are used, "None" is sent to the screen (IIRC)... Is a
proper check if a command line argument is not used to use the
following:
# being check
if options.optparse_test <> 1:
print "test parameter NOT detected"
# end check
Thanks.
# begin program
#!/usr/bin/python
from optparse import OptionParser
import string
parser = OptionParser()
parser.add_option("-t", "--test", action="count", dest="optparse_test",
help="testing optparse")
(options, args) = parser.parse_args()
print options.optparse_test
if options.optparse_test == 1:
print "test parameter detected"
if options.optparse_test <> 1:
print "test parameter NOT detected"
#parser.print_help()
# end program
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Re: Pyserial never read
Dennis Lee Bieber wrote:
dt = "D036EC"
print repr("".join([chr(int(dt[2*x:2*x+2],16)) for x in range(len(dt)//2)]))
>
> '\xd06\x00\x00\xec'
By the way, for future reference, this way beats the above hands down:
>>> import binascii
>>> binascii.unhexlify("D036EC")
'\xd06\x00\x00\xec'
-Peter
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Re: A C-like if statement
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. This
means you often need an "extra" line compared to a classic C "assign
and test" idiom such as you have above. I, like you, often miss the
compactness of the C idiom, but there it is.
It's also unpythonic to return magic values to indicate failure.
Throwing an exception would be the more normal way of doing it. So,
I'd expect the above to translate into something like:
try:
i = a.find("3")
print "It's here: ", i
except NotFound:
print "No 3's here"
--
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A C-like if statement
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?
Thanks!
Bob
--
http://mail.python.org/mailman/listinfo/python-list
Re: need help regarding compilation
fidlee wrote: >>Try this: >> >>def fac(x): >> if x<=1:return 1 >> return x*fac(x-1) > > > I am still getting an error in compilation. Would be really thankful if > someone could tell me as to what is going wrong. Try running the compiler under Java 1.4, or just run the class in the jython interpreter without compiling it first. For simple examples like this you don't need to compile, just run it with jython factor.py Kent -- http://mail.python.org/mailman/listinfo/python-list
