[ANN] Python courses this Spring
I'll be giving a variety of Python courses this Spring. Daytime courses are for visitors and locals who need Python training in the shortest amount of time possible via consecutive workdays. Python is certainly gaining momentum as our February course filled up completely! Although I had planned on scheduling the same set to be taught in November, it is likely that these May daytime sessions are the last ones of 2007. In contrast, I'm experimenting with a *weekly evening* course in Silicon Valley designed mainly for locals. It represents a viable alternative to those who cannot take time off during the week as well as being more budget-friendly, as I am partnering with a local community college (Foothill) to offer this course. Class takes place on the main campus and you must register through the college to attend. For more information, such as cost and other course details, see the corresponding websites below. Contact me privately if you have any more questions. cheers, -wesley - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Core Python Programming, Prentice Hall, (c)2007,2001 http://corepython.com wesley.j.chun :: wescpy-at-gmail.com python training and technical consulting cyberweb.consulting : silicon valley, ca http://cyberwebconsulting.com - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - DAYTIME === - (Intensive) Introduction to Python (Mon-Wed, May 14-16) - Advanced Python Programming (Wed-Fri, May 16-18) - Advanced Python (short course; Thu-Fri, May 17-18) - Core Python (Intro+Advanced combo; Mon-Fri, May 14-18) These courses run daily 9a-5p and will take place in San Bruno right near the San Francisco International Airport at the: Staybridge Suites - San Francisco Airport 1350 Huntington Ave San Bruno, CA 94066 USA http://www.ichotelsgroup.com/h/d/sb/1/en/hd/sfobr Discounts are available for students and teachers, as well as multiple registrations from those working at the same company. For more info and registration, go to http://cyberwebconsulting.com (click on Python Training) LOCALS: free parking and 101/280/380 access, BART across the street and CalTrain down the road (San Bruno stations) VISITORS: free hotel shuttle to/from the San Francisco airport, lots of free food and wireless, 2-bedroom suites w/private baths and a common work/living area available for traveling coworkers, and of course, The City by the Bay - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - EVENING === - Intermediate Python Programming (Tues, Apr 10-Jun 26) This course will cover the same topics as the advanced course above as well as critical portions of the intensive introductory course. It will be held once a week on Tuesday evenings from 6-9:40p. Foothill College 12345 El Monte Road Los Altos Hills, CA 94022 USA (right off 280, just south of Stanford) http://www.foothill.edu/schedule/schedule.php search for CIS 68L for Spring Quarter 2007 -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ffnet 0.6 released
ffnet version 0.6 is now released. Source packages, Gentoo ebuilds and Windows binaries are now available for download at: http://ffnet.sourceforge.net The last public release was 0.5. If you are unfamiliar with this package, see the end of this message for a description. NEW FEATURES - trained network can be now exported to fortran source code and compiled - added new architecture generator (imlgraph) - added rprop training algorithm - added draft network plotting facility (based on networkx and matplotlib) CHANGES BUG FIXES - fixed bug preventing ffnet form working with networkx-0.33 - training data can be now numpy arrays - ffnet became a package now, but API should be compatibile with previous version DOCUMENTATION - docstrings of all objects have been improved - docs (automatically generated with epydoc) are avilable online and have been included to source distribution What is ffnet? -- ffnet is a fast and easy-to-use feed-forward neural network training solution for python. Unique features --- 1. Any network connectivity without cycles is allowed. 2. Training can be performed with use of several optimization schemes including: standard backpropagation with momentum, rprop, conjugate gradient, bfgs, tnc, genetic alorithm based optimization. 3. There is access to exact partial derivatives of network outputs vs. its inputs. 4. Automatic normalization of data. Basic assumptions and limitations: -- 1. Network has feed-forward architecture. 2. Input units have identity activation function, all other units have sigmoid activation function. 3. Provided data are automatically normalized, both input and output, with a linear mapping to the range (0.15, 0.85). Each input and output is treated separately (i.e. linear map is unique for each input and output). 4. Function minimized during training is a sum of squared errors of each output for each training pattern. Performance --- Excellent computational performance is achieved implementing core functions in fortran 77 and wrapping them with f2py. ffnet outstands in performance pure python training packages and is competitive to 'compiled language' software. Moreover, a trained network can be exported to fortran sources, compiled and called from many programming languages. Usage - Basic usage of the package is outlined below: from ffnet import ffnet, mlgraph, savenet, loadnet, exportnet conec = mlgraph( (2,2,1) ) net = ffnet(conec) input = [ [0.,0.], [0.,1.], [1.,0.], [1.,1.] ] target = [ [1.], [0.], [0.], [1.] ] net.train_tnc(input, target, maxfun = 1000) net.test(input, target, iprint = 2) savenet(net, xor.net) exportnet(net, xor.f) net = loadnet(xor.net) answer = net( [ 0., 0. ] ) partial_derivatives = net.derivative( [ 0., 0. ] ) Usage examples with full description can be found in examples directory of the source distribution or browsed at http://ffnet.sourceforge.net. -- Marek Wojciechowski -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
itools 0.15.2 released
itools 0.15.2 (2007/03/22) == itools is a Python library, it groups a number of packages into a single meta-package for easier development and deployment: itools.catalogitools.http itools.uri itools.cmsitools.i18n itools.vfs itools.csvitools.ical itools.web itools.datatypes itools.rss itools.workflow itools.gettextitools.schemas itools.xhtml itools.handlers itools.stl itools.xliff itools.html itools.tmx itools.xml This release brings tons of changes, many more than it is reasonable to do for just a minor version bump. Highlights: - The speed of the iCalendar handler has been radically improved, specifically for searches. We have added reverse indexes and now the method search offers the same API as the CSV handler. - A new module, itools.i18n.locale, has been added to provide support for locale information like dates. - The database system for itools.cms has been re-worked. The code is cleaner, faster and more robust. - There have been major user interface improvements in itools.cms. Most notably, a drop-down menu has replaced the tabs. There is also a new menu in the left column called Main Menu, with links to the most frequently used views. Other improvements involve the folder's browse view (sort by size, localized last modification time), and the JavaScript calendar widget, which is multilingual now. - The Wiki and Calendar objects of itools.cms have been improved. The first has a new export to PDF feature and has a generally better user interface. The second has an improved weekly view. - A new object has been added to itools.cms: Web-Site. Its intended purpose is to be the root of a public (extranet) or private (intranet) site; so a single itools.cms instance may host several web sites, with a shared user database. - The user management and control access interfaces of itools.cms have been re-worked. And now we have two security policies: intranet or extranet. Also, now users have the fields firstname and lastname (instead of just one field for the fullname). - The API of itools.cms has been tweaked to make easier several tasks, most notably to define custom skins, to use the table widget, and to validate forms. Credits: - Luis Belmar Letelier helped fixing bugs; - Hervé Cauwelier worked on itools.cms (Wiki, CSS), got the API of itools.web working as documented, and fixed bugs; - Nicolas Deram worked on itools.ical, itools.cms.ical, and fixed bugs; - J. David Ibáñez worked on the user interface of itools.cms and the related programming interface, on the performance of itools.ical and fixed bugs. Resources - Download http://download.ikaaro.org/itools/itools-0.15.2.tar.gz Home http://www.ikaaro.org/itools Mailing list http://mail.ikaaro.org/mailman/listinfo/itools Bug Tracker http://bugs.ikaaro.org/ -- J. David Ibáñez Itaapy http://www.itaapy.com Tel +33 (0)1 42 23 67 45 9 rue Darwin, 75018 Paris Fax +33 (0)1 53 28 27 88 -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
python on window
i have install python on window xp os.
C:/program files/python
i have done print program it working but .py can't working
help me to how i will execute this file this file where i will save
it.
path execution how .
tell me about any envorment veriable in python to set before python
editor run,it path. etc
print ' sandeep patil'
sandeep patil
print ' sandeep bhagwan patil ,msc. java j2ee developer
SyntaxError: EOL while scanning single-quoted string
print ' sandeep bhagwan patil ,msc. java j2ee developer'
sandeep bhagwan patil ,msc. java j2ee developer
import posix
Traceback (most recent call last):
File pyshell#4, line 1, in module
import posix
ImportError: No module named posix
phonebook = {'sandeep':9325,'amit':9822,'anand':9890}
phonebook = {'titu':9423,'dadu':9422,'giri':9326}
inverted_phonebook=invert(phonebook)
Traceback (most recent call last):
File pyshell#7, line 1, in module
inverted_phonebook=invert(phonebook)
NameError: name 'invert' is not defined
def invert(table):
index={}
for key in table.key():
value=table[key]
if not index.has_key(value):
index[value]=[]
index[value].append(key)
return index
--
http://mail.python.org/mailman/listinfo/python-list
Re: fine grain logging cotrol
Eric S. Johansson wrote: [in private mail -- please don't, Eric] Peter Otten wrote: As a general direction try to understand the logging package, the __new__() method (a constructor in C++), and metaclasses (a class is an instance of another class which is called metaclass to avoid confusion when talking about both) independently before jumping into the mix. I've spent a big chunk of the afternoon/evening and am ok with metaclasses. but what has my knickers in a twist is the format statement. how do I get the logger to let me fill in funcName. I've tried what the docs say should work (but it doesn't) self.__logger.info(Felis.alpha, funcName=hisss) I don't understand. The logging package detects the function name without user intervention. Perhaps it's time to step back and explain what you want to achieve rather than how you proceed. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Idiom for running compiled python scripts?
On Fri, 23 Mar 2007 14:03:12 +1100, Steven D'Aprano wrote:
Since you've done these tests already, perhaps you can tell us what gain
you actually got?
About the same as you, ~20 msecs for my small script samples.
Of course you have to type the c. You're not deleting the source files
away are you? *wink*
Sorry, the wink is lost on me?
Of course I am not deleting the sources. In fact, I am also talking
about python scripts being called from shell scripts. I guess I'm just
surprised that the python installation does not provide a small stub
invoker, e.g:
A small script called python_compile_and_run in pseudo code:
#!/usr/bin/env python
import sys
# Following is invalid syntax unfortunately :(
from sys.argv[1].rstrip('.py') import main
sys.argv = sys.argv[1:]
if __name__ == __main__:
main()
so I could just do a python_compile_and_run myscript.py and it would
do what I want, i.e. run myscript.pyc if available and valid, generate
and run it if necessary.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Need help to learn Python
On 3月23日, 下午1时03分, PythonBiter [EMAIL PROTECTED] wrote: Hi everyone, I'm very new in this Group as well Python language. I want to learn Python. So could you please advice me, and guide me how can i become master in Python ! Thanks, Partha Programming Python 3ed Edition is a great book. -- http://mail.python.org/mailman/listinfo/python-list
Re: Question regarding __new__
En Thu, 22 Mar 2007 13:19:52 -0300, Frank Benkstein [EMAIL PROTECTED] escribió: Yet [1] says: [...] some rules for __new__: [...] If you return an object of a different class, its __init__ method will be called. That was true at that time (2.2 initial), but not now. See http://www.python.org/sf/537450 Revision 26220 - Modified Sat Apr 6 01:05:01 2002 UTC (4 years, 11 months ago) by gvanrossum - Changed new-style class instantiation so that when C's __new__ method returns something that's not a C instance, its __init__ is not called. [SF bug #537450] The documentation should be updated to reflect this change. Am I missing something? Is this documented somewhere else? See http://docs.python.org/ref/customization.html Also it would be nice if someone could point me to the function that implements this in C. I didn't find anything in object.c or typeobject.c. It's in typeobject.c, function type_call -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with time
Steve Holden [EMAIL PROTECTED] a écrit dans le message de news: [EMAIL PROTECTED] import time import datetime dbtd = timedelta from database h, m, s = time.localtime()[3:6] timenow = s + (60 * (m + 60 * h)) Look like ok, thanks all :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Idiom for running compiled python scripts?
On Mar 23, 8:30 am, Mark [EMAIL PROTECTED] wrote: Of course I am not deleting the sources. In fact, I am also talking about python scripts being called from shell scripts. There's a nice recipe in Python Cookbook (Martelli et al.) for this. It involves zipping your .pyc files and adding a shell stub. Never used it before but I'm going to need something similar in the near future, probably with a text templating system such as Cheetah (www.cheetahtemplate.org). HTH Gerard -- http://mail.python.org/mailman/listinfo/python-list
Re: How to receive a FILE* from Python under MinGW?
En Fri, 23 Mar 2007 01:47:22 -0300, John Pye [EMAIL PROTECTED] escribió: On Mar 23, 3:33 pm, Gabriel Genellina [EMAIL PROTECTED] wrote: import msvcrt fh = msvcrt.get_osfhandle(f.fileno()) .. example.filetest(fh) f.close() Cool, that looks great, Gabriel. But is there any way I can hide the get_osfhandle call inside my Python module? That way I wouldn't need to request end users to make contorted 'if platform.system()==Windows' calls everywhere. Maybe this *is* workable, after all :-) I can think of two ways: - Define a Python function to do that, and test the platform just there. Something like that: def exportable_file(f): if we_are_working_on_windows: import msvcrt return msvcrt.get_osfhandle(f.fileno()) else: return f And replace all places where a Python file goes into a C extension, with exportable_file(f) - Define your own file class, inheriting from file, and store that handle as an attribute class my_file_class(file): def __init__(self, name, mode=r, buffering=-1): file.__init__(self, name, mode, buffering) self.handle = msvcrt.get_osfhandle(self.fileno()) But I've not checked this; I'm not sure if file creation always goes thru this __init__; I assume the file will never change its FILE struct (f_fp member) (uhm, is there any way to re-open a file?). Perhaps this approach has many assumptions to be usable at all - uh, forget it. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: python on window
En Fri, 23 Mar 2007 04:25:52 -0300, sandeep patil [EMAIL PROTECTED]
escribió:
i have install python on window xp os.
C:/program files/python
i have done print program it working but .py can't working
help me to how i will execute this file this file where i will save
it.
path execution how .
tell me about any envorment veriable in python to set before python
editor run,it path. etc
You don't need to set any environment variable to run Python. (Perhaps
PYTHONPATH, but *only* if you put modules into non standard places)
import posix
Traceback (most recent call last):
File pyshell#4, line 1, in module
import posix
ImportError: No module named posix
That's ok: there is no module named posix on Windows, it is only
available on Unix systems.
I've rearranged a bit your example. Write the following into a file named
test.py - use whatever editor you like (even notepad):
---begin file test.py---
def invert(table):
index = {}
for key in table:
value = table[key]
if not index.has_key(value):
index[value] = []
index[value].append(key)
return index
phonebook = {'sandeep':9325, 'amit':9822, 'anand':9890, 'titu': 9325}
print Phonebook, phonebook
inverted_phonebook = invert(phonebook)
print Inverted phonebook, inverted_phonebook
---end file test.py---
Then open a console window, change to the same directory where you saved
test.py, and execute:
python test.py
You should get:
Phonebook {'titu': 9325, 'amit': 9822, 'anand': 9890, 'sandeep': 9325}
Inverted phonebook {9890: ['anand'], 9325: ['titu', 'sandeep'], 9822:
['amit']}
There are plenty of tutorials about Python. A good book -among others- is
Dive into Python; you can buy the book, read it online, or even download
it from http://www.diveintopython.org/
--
Gabriel Genellina
--
http://mail.python.org/mailman/listinfo/python-list
Re: Making a non-root daemon process
On Mar 22, 11:19 pm, Ben Finney [EMAIL PROTECTED] wrote: Howdy all, For making a Python program calve off an independent daemon process of itself, I found Carl J. Schroeder's recipe in the ASPN Python Cookbook. URL:http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/278731 This is a thorough approach, and I'm cribbing a simpler process from this example. One thing that strikes me is that the algorithm seems to depend on running the program as the root user. import os def become_daemon(): pid = os.fork() if pid == 0: # This is the child of the fork # Become a process leader of a new process group os.setsid() # Fork again and exit this parent pid = os.fork() if pid == 0: # This is the child of the second fork -- the running process. pass else: # This is the parent of the second fork # Exit to prevent zombie process os._exit(0) else: # This is the parent of the fork os._exit(0) become_daemon() # Continue with the program The double-fork seems to be to: - Allow the first forked child to start a new process group - Allow the second forked child to be orphaned immediately The problem I'm having is that 'os.setsid()' fails with 'OSError: [Errno 1] Operation not permitted' unless I run the program as the root user. This isn't a program that I want necessarily running as root. It works for me. I mean your program above produces no exceptions for me on Debian 3.1 python2.4 What does the 'os.setsid()' gain me? It dettaches you from terminal. It means you won't receive signals from terminal for sure. Like SIGINT and SIGHUP, but there are maybe other. How can I get that without being the root user? Maybe you can go over the list of all possible signals from the terminal and notify kernel that you want to ignore them. Sounds similar to dettaching from the terminal, but maybe there some differences. But the fact that os.setsid fails for you is weird anyway. -- Leo. -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I invoke a Java code?
momobear a écrit : A friend of my write a Java program, and I want use it in my python program as a module. I searched the topic in Google and find maybe the better way is use GCJ to compile it. Is there any other way for me? the simple and speediness choice the better. thanks. See my links: http://www.limsi.fr/Individu/pointal/python.html#liens-intautlang-java You can look at * Jython * JPype * JEP * java2python -- http://mail.python.org/mailman/listinfo/python-list
Re: python on window
On Mar 23, 7:25 am, sandeep patil [EMAIL PROTECTED] wrote:
i have install python on window xp os.
C:/program files/python
i have done print program it working but .py can't working
help me to how i will execute this file this file where i will save
it.
path execution how .
tell me about any envorment veriable in python to set before python
editor run,it path. etc
print ' sandeep patil'
sandeep patil
print ' sandeep bhagwan patil ,msc. java j2ee developer
SyntaxError: EOL while scanning single-quoted string print ' sandeep
bhagwan patil ,msc. java j2ee developer'
sandeep bhagwan patil ,msc. java j2ee developer
import posix
Traceback (most recent call last):
File pyshell#4, line 1, in module
import posix
ImportError: No module named posix
phonebook = {'sandeep':9325,'amit':9822,'anand':9890}
phonebook = {'titu':9423,'dadu':9422,'giri':9326}
inverted_phonebook=invert(phonebook)
Traceback (most recent call last):
File pyshell#7, line 1, in module
inverted_phonebook=invert(phonebook)
NameError: name 'invert' is not defined def invert(table):
index={}
for key in table.key():
value=table[key]
if not index.has_key(value):
index[value]=[]
index[value].append(key)
return index
Hi Sandeep.
As you are working with Python on Windows, I would suggest that you
install the Python for Windows extensions from here:
http://sourceforge.net/project/showfiles.php?group_id=78018
It includes a very good application called PythonWin. Once installed,
PythonWin will be available under Python in your Start menu.
If you run PythonWin, File/New gives you the option to create a new
Python script. To begin with, you can save into the Lib folder of your
Python installation (probably C:\Python25\Lib). I usually add my
initials at the front of the script name to differentiate my scripts
from the standard ones if I put stuff in Lib.
You should be able edit your PYTHONPATH variable in PythonWin - see
the Tools options (though, now I look, my installation actually has a
bug in this function), or alternatively, you can add a folder to your
PYTHONPATH environment variable in RegEdit (if you know what you're
doing).
I hope this helps.
J.
--
http://mail.python.org/mailman/listinfo/python-list
Re: python on window
That should have been: You should be able edit your PYTHONPATH variable (should you need to)... Gabiel is right, it's not usually required. -- http://mail.python.org/mailman/listinfo/python-list
Re: Making a non-root daemon process
Leo Kislov [EMAIL PROTECTED] writes: On Mar 22, 11:19 pm, Ben Finney [EMAIL PROTECTED] wrote: The problem I'm having is that 'os.setsid()' fails with 'OSError: [Errno 1] Operation not permitted' unless I run the program as the root user. This isn't a program that I want necessarily running as root. It works for me. I mean your program above produces no exceptions for me on Debian 3.1 python2.4 Hmm. I typed the example program in as a simplified version of what I'm doing; but didn't actually *run* it. When I do run it, I get no exception, as you say. Now I'll have to find out what significant difference there is between my failing code and this example, and report back in this thread. Thanks for showing me this far :-) -- \Some people, when confronted with a problem, think 'I know, | `\ I'll use regular expressions'. Now they have two problems. -- | _o__)Jamie Zawinski, in alt.religion.emacs | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: how can I invoke a Java code?
momobear napisał(a): A friend of my write a Java program, and I want use it in my python program as a module. I searched the topic in Google and find maybe the better way is use GCJ to compile it. Is there any other way for me? the simple and speediness choice the better. thanks. If the speed is crucial, I suggest compiling the Java code with GCJ, then write Python extension module for the Java library. This is how the Lucene indexing library is ported to Python, see http://pylucene.osafoundation.org/. -- Jarek Zgoda We read Knuth so you don't have to. -- http://mail.python.org/mailman/listinfo/python-list
$1 download the newest pda software
Want access to 15000+ all the new pda applications? just $1 register for one account to download/buy applications in this site. http://handpedia.vicp.cc/ this is one-time email, thank your reading. -- http://mail.python.org/mailman/listinfo/python-list
Create new processes over telnet in XP
Hello, How do you create/spawn new processes in XP over telnet using python? I.e. I would like to create a new process and have it running in the background... when I terminate the telnet connection, I would what the spawned processes to keep running until I shut it off... I got the os.popen method to spawn a new process running in the backgroun, but not over telnet... tried os.popen[2, 3, 4] and also subprocesses.popen without any luck... Any help will be appreciated... thankyou. -- http://mail.python.org/mailman/listinfo/python-list
Re: Need help to learn Python
Hi! PythonBiter wrote: I'm very new in this Group as well Python language. I want to learn Python. So could you please advice me, and guide me how can i become master in Python ! If you are new to programming in general, too, the Non-Programmer's Tutorial for Python is a good start: http://en.wikibooks.org/wiki/Non-Programmer%27s_Tutorial_for_Python Cheers, Ben -- http://mail.python.org/mailman/listinfo/python-list
Re: Making GIF image twice the size - in memory
Miki wrote: Hello All, Heelo, I get an image from a web page (via urlopen), and like to make it twice the size. -cut- However I don't get a valid GIF image. Your code work well here! Why you said that the string are invalid? --code: test_image_double.py from urllib import urlopen import Image from ImageFile import Parser def double(image_data): image_parser = Parser() image_parser.feed(image_data) im = image_parser.close() new_size = tuple(map(lambda x: 2 * x, im.size)) new = im.resize(new_size) return new.tostring(gif, P), new, new_size url = http://www.google.com/intl/en_ALL/images/logo.gif; image_data = urlopen(url).read() image_data, img, new_size = double(image_data) img_new = Image.fromstring(P, new_size, image_data, gif) img_new.save(./out1.gif) img.save(./out2.gif) print PIL version:, Image.VERSION -- test michele:~/tmp$ python test_image_double.py file out1.gif file out2.gif (552, 220) 49554 PIL version: 1.1.5 out1.gif: GIF image data, version 87a, 552 x 220 out2.gif: GIF image data, version 87a, 552 x 220 michele:~/tmp$ Any ideas? Forgot to specify that the data aren't in raw format, but to decode it with the gif encoder? Thanks, Ciao, Michele -- http://mail.python.org/mailman/listinfo/python-list
finally for unit test
hi! I have a unittest framework that tests a single function that in turn works with files (takes input and outputs in the same file, no return values). In the unittest class I assign a member with all the names of my testfiles and a testdirectory. The tests call the function (which opens and writes to the file) and then opens the file to see if everything is in order. The problem now is that after each testrun I have to copy fresh files into the testdirectory, since of course the function already run on all the files and made the changes. So I implemented a buffering in the unittest functions: buffer the file, call the function, make the test, write the buffered file back. This works fine for unittests that do not fail. If a unittest fails though the function stops and the writing back is never done. Is there something like a finally for unittest functions? Or could I use another approach to buffer and write back my files (for each unittest function)? thanks! gabriel -- http://mail.python.org/mailman/listinfo/python-list
Re: Idiom for running compiled python scripts?
On Fri, 23 Mar 2007 07:30:58 +, Mark wrote:
On Fri, 23 Mar 2007 14:03:12 +1100, Steven D'Aprano wrote:
Since you've done these tests already, perhaps you can tell us what gain
you actually got?
About the same as you, ~20 msecs for my small script samples.
Well, I think that pretty much answers your question about whether it is
worth pre-compiling short shell scripts: you save about 20ms in execution
time, and lose 200ms in typing time. (Maybe a bit less if you are a
fast typist and don't use auto-completion.) You do the maths.
Of course you have to type the c. You're not deleting the source files
away are you? *wink*
Sorry, the wink is lost on me?
It is because I didn't really think you were deleting the source files.
That would be incredibly stupid. But I mentioned it just in case some
not-so-bright spark decided to argue that you could use auto-completion
without needing to type that final c if you deleted the source file.
Presumably now somebody is going to suggest merely *moving* the source
files into another directory, thus spending a minute or two each time they
edit a script re-arranging files in order to save twenty or thirty
milliseconds when they execute the script. Hey, if your time is so
valuable that 20ms means that much to you, go for it.
Of course I am not deleting the sources. In fact, I am also talking
about python scripts being called from shell scripts. I guess I'm just
surprised that the python installation does not provide a small stub
invoker, e.g:
A small script called python_compile_and_run in pseudo code:
[snip pseudo-code]
so I could just do a python_compile_and_run myscript.py and it would
do what I want, i.e. run myscript.pyc if available and valid, generate
and run it if necessary.
You shouldn't expect Python to come with every imaginable special-purpose
script already written for you! Besides, it's pretty simple to get that
functionality by hand when you need it, or automatically for that matter.
Here's one (untested) script that executes the pyc file in a subshell if
it exists and is new enough, and compiles it if it doesn't.
import os, sys, compiler
from stat import ST_MTIME as MT
if __name__ == __main__:
scriptname = sys.argv[1]
compiledname = scriptname + c
if not os.path.exists(compiledname) or \
os.stat(compiledname)[MT] os.stat(scriptname)[MT]:
# compiled file doesn't exist, or is too old
compiler.compileFile(scriptname)
assert os.path.exists(compiledname)
resultcode = os.system('python %s' % compiledname)
sys.exit(resultcode)
Now don't forget to test whether launching the subshell takes longer than
the 20ms you might save. All that effort, and wouldn't it be ironic if it
was actually *slower* than executing the script from scratch each time...
--
Steven.
--
http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
On Fri, 23 Mar 2007 04:18:59 -0700, killkolor wrote: The problem now is that after each testrun I have to copy fresh files into the testdirectory, since of course the function already run on all the files and made the changes. So I implemented a buffering in the unittest functions: buffer the file, call the function, make the test, write the buffered file back. This works fine for unittests that do not fail. If a unittest fails though the function stops and the writing back is never done. Is there something like a finally for unittest functions? Or could I use another approach to buffer and write back my files (for each unittest function)? A simple approach would be to copy the test files *before* running the tests, instead of after. That way it doesn't matter if the tests fail or not: the next run will simply replace the test files with known good copies, regardless. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Been a while...
On 22 Mar, 16:34, John Salerno [EMAIL PROTECTED] wrote: Hi guys. It's been a while since I've used Python, so I got a little rusty, but I really want to start using it again, just out of habit and for fun. Can anyone suggest a book or a website with little projects I could work on to keep me busy? The Python Wiki's Beginner's Guide is one place to start: http://wiki.python.org/moin/BeginnersGuide (I do have Beginning Python with the 10 projects in the back, but those might be a little too involved for me right now.) There are many ideas for projects on the Wiki, too: http://wiki.python.org/moin/CodingProjectIdeas I think a lot of them might be quite difficult for beginners, however. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Create new processes over telnet in XP
You could use pexpect module. Open a telnet session Then run the script in nohup mode It's assumed that the binary is available over there On 23 Mar 2007 03:47:14 -0700, Godzilla [EMAIL PROTECTED] wrote: Hello, How do you create/spawn new processes in XP over telnet using python? I.e. I would like to create a new process and have it running in the background... when I terminate the telnet connection, I would what the spawned processes to keep running until I shut it off... I got the os.popen method to spawn a new process running in the backgroun, but not over telnet... tried os.popen[2, 3, 4] and also subprocesses.popen without any luck... Any help will be appreciated... thankyou. -- http://mail.python.org/mailman/listinfo/python-list -- Regards-- Rishi Pathak National PARAM Supercomputing Facility Center for Development of Advanced Computing(C-DAC) Pune University Campus,Ganesh Khind Road Pune-Maharastra -- http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
killkolor wrote: I have a unittest framework that tests a single function that in turn works with files (takes input and outputs in the same file, no return values). In the unittest class I assign a member with all the names of my testfiles and a testdirectory. The tests call the function (which opens and writes to the file) and then opens the file to see if everything is in order. The problem now is that after each testrun I have to copy fresh files into the testdirectory, since of course the function already run on all the files and made the changes. So I implemented a buffering in the unittest functions: buffer the file, call the function, make the test, write the buffered file back. This works fine for unittests that do not fail. If a unittest fails though the function stops and the writing back is never done. Is there something like a finally for unittest functions? TestCase.tearDown() http://docs.python.org/lib/testcase-objects.html#l2h-5002 Or could I use another approach to buffer and write back my files (for each unittest function)? Rather than restoring the file I would just delete it and use TestCase.setUp() to make a fresh copy. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Help controlling CDROM from python
If you want an OS neutral way one may be able to use pycdio from the Cheese shop. It requires libcdio to be installed and that sometimes the case if you have a free media player (like vlc or xine, or mplayer) installed. I don't really use it all that often so I can't vouch for how good it is. (Although there *are* regression tests). Ognjen Bezanov [EMAIL PROTECTED] writes: Hello, I am trying to control a CD-ROM drive using python. The code I use is shown below. import CDROM from fcntl import ioctl import os class Device: CDdevice= CDfd = None def __init__(self,name): self.CDdevice = name#we get a device name when module loaded if self.CDdevice == : print No device specified sys.exit(-1) self.openCD() def openCD(self): try: self.CDfd = open(self.CDdevice, 'r') #open the device and return filedescriptor except(OSError,IOError): #if there is an OS or IO Error (usually indicates nodisk) print Device Error, Halting (usually means drive or disk not found) sys.exit(-1) def unlockCD(self): return self.sendCDcommand(CDROM.CDROM_LOCKDOOR,0) def ejectCD(self): self.unlockCD() #we need to unlock the CD tray before we try to eject, otherwise we get an IO Error (#5) return self.sendCDcommand(CDROM.CDROMEJECT) def sendCDcommand(self,command,argument=''): return ioctl(self.CDfd,command,argument) The code that calls the class is a follows: import CD_Bindings CD = CD_Bindings.Device(/dev/cdrom) print CD.ejectCD() This works great, but only when there is a disk inside, otherwise we get an error. My issue is that I need to be able to eject the CDROM tray even if there is no disk inside. This is possible because other programs (like the linux eject command) can do it. Its just a question of how it is done in python. So I'm posting here in the hope someone can tell me. Thanks, Ognjen -- http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
killkolor [EMAIL PROTECTED] wrote: I have a unittest framework that tests a single function that in turn works with files (takes input and outputs in the same file, no return values). I would want to split that function into two: a) one which does the processing, but not working with a file, b) and one which handles reading and calls the processing function and then writes the file. The function it calls would be passed in as an optional parameter and defaults to function (a) Then you need two sets of tests: one to test the action of reading data from a file and then rewriting the output in-place, but you just pass in a mock function for the processing which can assert that it saw the expected inputs. and as many tests as you want for the processing, but no annoying files to get in the way. If you really cannot have the processing without reading from a file, then let it take two files, input and output as parameters, and have the (b) function choose between calling it with separate input/output files or creating a temporary file which is renamed to replace the original on completion. Then at least you can read directly from the test inputs without ever needing to write them. -- http://mail.python.org/mailman/listinfo/python-list
Re: Idiom for running compiled python scripts?
On Fri, 23 Mar 2007 22:24:07 +1100, Steven D'Aprano wrote: if not os.path.exists(compiledname) or \ os.stat(compiledname)[MT] os.stat(scriptname)[MT]: # compiled file doesn't exist, or is too old Surely the validity check done by Python is more sophisticated than this? Doesn't the binary file have to be compiled under the same python version etc? Now don't forget to test whether launching the subshell takes longer than the 20ms you might save. All that effort, and wouldn't it be ironic if it was actually *slower* than executing the script from scratch each time... But Python proper is executing all the above anyhow isn't it? So the 20 msecs advantage I measured already includes this logic. Anyhow, I give up. Compilation, it seems, only applies to python modules. Compilation is not appropriate for Python scripts. Should be in the FAQ. -- http://mail.python.org/mailman/listinfo/python-list
Cleanly exiting multi thread application on SIGINT
Is the following the most elegant way to exit a multi-threaded application on a Ctrl-C? I am a complete beginner and would have thought there was some way of doing it without having to use while 1: pass, but have yet to find a way. N.B. exit() is a method for cleanly exiting the thread using a queue. Many thanks Jon def main: wt = workerThread() wt.setDaemon(True) wt.start() ct = counterThread() ct.setDaemon(True) ct.start() try: while 1: pass except KeyboardInterrupt: wt.exit() ct.exit() -- http://mail.python.org/mailman/listinfo/python-list
Re: On Java's Interface (the meaning of interface in computer programing)
Sherm Pendley wrote: Lew [EMAIL PROTECTED] writes: Jim Burton wrote: Or you could stop feeding the trolls. Does not apply. The OP was not being trollish You obviously don't know Xah. He's been doing this for years, cross- posting to various language groups trying to start an argument between them. He even brags about being a troll on his web site. OK - that last is telling. I believe in the possibility of redemption: if a troll posts non-trollishly then I am willing to give them the benefit of the doubt. But if Xah were being trollish, why didn't they jump on my response and call me names? I still think that analysis of the original post is a useful exercise to learn Java. It's one thing to know what's right - it's another to know what's wrong and exactly why. The more subtle Xah or other minions of Satan get in their presentations, the more interesting the forensic exercise to dig out the truth. Perhaps I am just trying to make a silk purse out of a sow's ear. -- Lew -- http://mail.python.org/mailman/listinfo/python-list
Re: How to receive a FILE* from Python under MinGW?
On Mar 23, 7:48 pm, Gabriel Genellina [EMAIL PROTECTED] wrote: And replace all places where a Python file goes into a C extension, with exportable_file(f) What about calling mscvrt_get_osfhandle from inside the SWIG wrapper? I tried this but it seemed that the function was not exported to the DLL. Cheers JP -- http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
I went with the TestCase.setUp() function. Thanks a lot! -- http://mail.python.org/mailman/listinfo/python-list
Re: Need help to learn Python
Online Docs, and Core Python Programming fits the bill! (http:// starship.python.net/crew/wesc/cpp/) -- http://mail.python.org/mailman/listinfo/python-list
Catching an unknown error
Using the code below: ---BEGIN CODE--- value = raw_input(Type a divisor: ) try: value = int(value) print 42 / %d = %d % (value, 42/value) except ValueError: print I can't convert the value to an integer except ZeroDivisionError: print Your value should not be zero except: print Something unexpected happened ---END CODE--- In the last 'except' block, how can I print out the particular error name even though one is not specifically named? Thanks, Harlin -- http://mail.python.org/mailman/listinfo/python-list
Re: Need help to learn Python
On Mar 23, 12:03 am, PythonBiter [EMAIL PROTECTED] wrote: Hi everyone, I'm very new in this Group as well Python language. I want to learn Python. So could you please advice me, and guide me how can i become master in Python ! Thanks, Partha If you need books for a beginner in Python, go with Python Programming for the Absolute Beginner by Dawson, or Python Programming: An Introduction to Computer Science by Zelle. Core Python Programming is mostly theory and very little code. It's good for reference and digging deeper into the language, if you don't mind some screwy grammatical errors here and there. Programming Python 3rd Ed (by Lutz) has lots of code to dig into, but I would say it is for intermediate to advanced users. It also contains many practical useful scripts in it. Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Catching an unknown error
On Mar 23, 8:16 am, Harlin Seritt [EMAIL PROTECTED] wrote: Using the code below: ---BEGIN CODE--- value = raw_input(Type a divisor: ) try: value = int(value) print 42 / %d = %d % (value, 42/value) except ValueError: print I can't convert the value to an integer except ZeroDivisionError: print Your value should not be zero except: print Something unexpected happened ---END CODE--- In the last 'except' block, how can I print out the particular error name even though one is not specifically named? Thanks, Harlin Make the last 'except' block like this: Except Exception, e: print e Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Catching an unknown error
Harlin Seritt wrote: In the last 'except' block, how can I print out the particular error name even though one is not specifically named? the sys.exc_info() function returns information about the current exception. see: http://effbot.org/pyref/sys.exc_info /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Catching an unknown error
On Mar 23, 8:29 am, [EMAIL PROTECTED] wrote: On Mar 23, 8:16 am, Harlin Seritt [EMAIL PROTECTED] wrote: Using the code below: ---BEGIN CODE--- value = raw_input(Type a divisor: ) try: value = int(value) print 42 / %d = %d % (value, 42/value) except ValueError: print I can't convert the value to an integer except ZeroDivisionError: print Your value should not be zero except: print Something unexpected happened ---END CODE--- In the last 'except' block, how can I print out the particular error name even though one is not specifically named? Thanks, Harlin Make the last 'except' block like this: Except Exception, e: print e Mike just don't capitalize the word except ... my bad -- http://mail.python.org/mailman/listinfo/python-list
Re: Catching an unknown error
[EMAIL PROTECTED] wrote: Make the last 'except' block like this: Except Exception, e: print e while that's good enough for the given example, it's not good enough for the general case (in contemporary Python, exceptions don't have to inherit from the Exception class). /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Cleanly exiting multi thread application on SIGINT
jrpfinch wrote: Is the following the most elegant way to exit a multi-threaded application on a Ctrl-C? I am a complete beginner and would have thought there was some way of doing it without having to use while 1: pass, but have yet to find a way. def main: wt = workerThread() wt.setDaemon(True) wt.start() ct = counterThread() ct.setDaemon(True) ct.start() try: while 1: pass you could at least insert a time.sleep(1), to avoid busy-looping. /F -- http://mail.python.org/mailman/listinfo/python-list
Re: Catching an unknown error
On Mar 23, 8:16 am, Harlin Seritt [EMAIL PROTECTED] wrote: Using the code below: ---BEGIN CODE--- value = raw_input(Type a divisor: ) try: value = int(value) print 42 / %d = %d % (value, 42/value) except ValueError: print I can't convert the value to an integer except ZeroDivisionError: print Your value should not be zero except: print Something unexpected happened ---END CODE--- In the last 'except' block, how can I print out the particular error name even though one is not specifically named? Thanks, Harlin Thanks for pointing that out. I was following logic I was taught in Hetland's book, which supposedly was up-to-date for Python 2.4. Typical textbook error. Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Need help to learn Python
PythonBiter wrote: Hi everyone, I'm very new in this Group as well Python language. I want to learn Python. So could you please advice me, and guide me how can i become master in Python ! Thanks, Partha Lots of great resources for beginners: http://wiki.python.org/moin/BeginnersGuide/NonProgrammers -- http://mail.python.org/mailman/listinfo/python-list
Re: Idiom for running compiled python scripts?
On Fri, 23 Mar 2007 12:22:44 +, mark wrote: On Fri, 23 Mar 2007 22:24:07 +1100, Steven D'Aprano wrote: if not os.path.exists(compiledname) or \ os.stat(compiledname)[MT] os.stat(scriptname)[MT]: # compiled file doesn't exist, or is too old Surely the validity check done by Python is more sophisticated than this? Doesn't the binary file have to be compiled under the same python version etc? Of course. What, do you want me to do all your work? :-) Now don't forget to test whether launching the subshell takes longer than the 20ms you might save. All that effort, and wouldn't it be ironic if it was actually *slower* than executing the script from scratch each time... But Python proper is executing all the above anyhow isn't it? So the 20 msecs advantage I measured already includes this logic. I don't know how you measured the 20ms. When you call a script direct from the shell, you've already got a shell running. When you call a script from within Python via os.system, it has to launch a sub-shell. That takes time. Anyhow, I give up. Compilation, it seems, only applies to python modules. Compilation is not appropriate for Python scripts. Should be in the FAQ. No, that's not true. Python scripts certainly take advantage of compiled modules. The real lesson of this is that optimization isn't necessarily straightforward. What we imagine should be faster might not be in practice -- especially when dealing with micro-optimizations that only save a few tens of milliseconds. Frankly, it simply isn't worth trying to save 20ms in a script that takes less than a second to run. If you scratch your nose before hitting enter, you've wasted a hundred times what you've just spent hours trying to save. Or, to put it another way: The Rules of Optimization are simple. Rule 1: Don't do it. Rule 2 (for experts only): Don't do it yet. -- Michael A. Jackson (no, not that Michael Jackson), Principles of Program Design, 1975. -- Steven. -- http://mail.python.org/mailman/listinfo/python-list
Re: Catching an unknown error
On Mar 23, 9:42 am, [EMAIL PROTECTED] wrote: On Mar 23, 8:16 am, Harlin Seritt [EMAIL PROTECTED] wrote: Using the code below: ---BEGIN CODE--- value = raw_input(Type a divisor: ) try: value = int(value) print 42 / %d = %d % (value, 42/value) except ValueError: print I can't convert the value to an integer except ZeroDivisionError: print Your value should not be zero except: print Something unexpected happened ---END CODE--- In the last 'except' block, how can I print out the particular error name even though one is not specifically named? Thanks, Harlin Thanks for pointing that out. I was following logic I was taught in Hetland's book, which supposedly was up-to-date for Python 2.4. Typical textbook error. Mike Thanks guys... that gets 'er done. Harlin Seritt -- http://mail.python.org/mailman/listinfo/python-list
Re: Create new processes over telnet in XP
Godzilla wrote: Hello, How do you create/spawn new processes in XP over telnet using python? I.e. I would like to create a new process and have it running in the background... when I terminate the telnet connection, I would what the spawned processes to keep running until I shut it off... I got the os.popen method to spawn a new process running in the backgroun, but not over telnet... tried os.popen[2, 3, 4] and also subprocesses.popen without any luck... I don't know what kind of OS there is on that remote host you telnet to. The idea boils down to appropriate using of methods `read_until` and `write` from class `telnetlib.Telnet`. For more complicated stuff you can consider using pyexpect. Here is a small example of connecting to HP-UX. You can adjust that to your needs. code import telnetlib, time def login(tn, login, passwd, prompt): tn.read_until(login: ) tn.write(login + \n) if passwd: tn.read_until(Password: ) tn.write(passwd + \n) tn.read_until(prompt) time.sleep(2) print logged in def run_proc(tn, progname): tn.write(nohup %s \n % progname) tn.write(exit\n) print program %s running % progname def kill_proc(tn, login, prompt, progname): tn.write(ps -u %s\n % login) buf = tn.read_until(prompt) pid = get_pid(buf, progname) if not pid: print program %s not killed % progname tn.write(exit\n) return tn.write(kill -TERM %s\n % pid) tn.write(exit\n) print program %s killed % progname def get_pid(buf, progname): pid, comm = None, None for line in buf.split(\n): try: pid, _, _, comm = line.split() except ValueError: continue if comm == progname: return pid tn = telnetlib.Telnet(HOST, PORT) #tn.set_debuglevel(1) login(tn, login, passwd, /home/user) run_proc(tn, python ~/test.py) #kill_proc(tn, login, /home/user, python) /code -- HTH, Rob -- http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
gabriel Is there something like a finally for unittest functions? TestCase instances have setUp() and tearDown() methods: http://docs.python.org/dev/lib/testcase-objects.html Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Catching an unknown error
Harlin value = raw_input(Type a divisor: ) Harlin try: Harlinvalue = int(value) Harlinprint 42 / %d = %d % (value, 42/value) Harlin except ValueError: Harlin print I can't convert the value to an integer Harlin except ZeroDivisionError: Harlin print Your value should not be zero Harlin except: Harlin print Something unexpected happened Harlin In the last 'except' block, how can I print out the particular Harlin error name even though one is not specifically named? try: ... 1/0 ... except Exception, err: ... print repr(err) ... exceptions.ZeroDivisionError instance at 0x81e96ac Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Cleanly exiting multi thread application on SIGINT
Jon Is the following the most elegant way to exit a multi-threaded Jon application on a Ctrl-C? I am a complete beginner and would have Jon thought there was some way of doing it without having to use while Jon 1: pass, but have yet to find a way. I thought there was some sort of wait() method in the threading module, but I was mistaken. Maybe: while threading.activeCount(): time.sleep(0.01) ? Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Wikipedia and a little piece of Python History
On 21 Mar 2007 12:18:50 -0700, Paddy [EMAIL PROTECTED] wrote: I just had a link to Tim peters first post on doctest: http://groups.google.com/group/comp.lang.python/msg/1c57cfb7b3772763 removed from http://en.wikipedia.org/wiki/Doctest as it doesn't fit their guidelines for external links. I wonder, could maybe the official website be persuaded to host a copy so that it could be linked to? Wikipedia should have some guideline for referencing Usenet postings, somewhere ... Anyway, it's a good thing to provide at least the Message-ID of the posting. As an example, your your posting here was uniquely identified by the Message-ID [EMAIL PROTECTED] /Jorgen -- // Jorgen Grahn grahn@Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org R'lyeh wgah'nagl fhtagn! -- http://mail.python.org/mailman/listinfo/python-list
Exception passing
Hi, I have a function, which looks like the following: connecting = False def func (): global connecting connecting = True try: # Do lot of network stuff except Exception, e: connecting = False raise e This works quite good, but it is a hell to debug. Instead of getting a log message to the line which originally raised the exception. Is there anyway to reraise an exception, but preserve the log? -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception passing
On Mar 23, 9:29 am, Thomas Dybdahl Ahle [EMAIL PROTECTED] wrote: Hi, I have a function, which looks like the following: connecting = False def func (): global connecting connecting = True try: # Do lot of network stuff except Exception, e: connecting = False raise e This works quite good, but it is a hell to debug. Instead of getting a log message to the line which originally raised the exception. Is there anyway to reraise an exception, but preserve the log? You could import traceback and use its functionality. Lundh mentioned using sys.exc_info about an hour ago to another user. See http://effbot.org/pyref/sys.exc_info.htm Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception passing
Thomas Dybdahl Ahle [EMAIL PROTECTED] wrote: Hi, I have a function, which looks like the following: connecting = False def func (): global connecting connecting = True try: # Do lot of network stuff except Exception, e: connecting = False raise e This works quite good, but it is a hell to debug. Instead of getting a log message to the line which originally raised the exception. Is there anyway to reraise an exception, but preserve the log? Just use raise without any argument. E.g.: def raiser(): ... print 1/0 ... def reraise1(): ... print 'before' ... try: raiser() ... except Exception, e: ... print 'after' ... raise e ... def reraise2(): ... print 'before' ... try: raiser() ... except Exception, e: ... print 'after' ... raise ... reraise1() before after Traceback (most recent call last): File stdin, line 1, in module File stdin, line 6, in reraise1 ZeroDivisionError: integer division or modulo by zero reraise2() before after Traceback (most recent call last): File stdin, line 1, in module File stdin, line 3, in reraise2 File stdin, line 2, in raiser ZeroDivisionError: integer division or modulo by zero As you see, the traceback is maintained when you just raise, though it's altered when you raise e. Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: Create new processes over telnet in XP
On 23 Mar 2007 03:47:14 -0700, Godzilla [EMAIL PROTECTED] wrote: Hello, How do you create/spawn new processes in XP over telnet using python? I.e. I would like to create a new process and have it running in the background... Ssh -- or even rsh -- are better choices than telnet for these things. For some reason, they are not standard in Windows, though. ssh somewhere some command with arguments rsh somewhere some command with arguments compared to telnet somewhere and then performing expect-like things (basically simulating someone typing some command with arguments in the telnet session). when I terminate the telnet connection, I would what the spawned processes to keep running until I shut it off... That's a function of the remote OS; what happens when its terminal goes away is not under the control of the client side. /Jorgen -- // Jorgen Grahn grahn@Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org R'lyeh wgah'nagl fhtagn! -- http://mail.python.org/mailman/listinfo/python-list
Re: Idiom for running compiled python scripts?
Mark [EMAIL PROTECTED] wrote: ... so I could just do a python_compile_and_run myscript.py and it would do what I want, i.e. run myscript.pyc if available and valid, generate and run it if necessary. You can use python -c 'import myscript; myscript.main()' and variations thereon. Alex -- http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
On 23 Mar 2007 12:19:15 GMT, Duncan Booth [EMAIL PROTECTED] wrote: killkolor [EMAIL PROTECTED] wrote: I have a unittest framework that tests a single function that in turn works with files (takes input and outputs in the same file, no return values). I would want to split that function into two: a) one which does the processing, but not working with a file, Better to make it work with a file, in the sense that it works with file-like objects so you can feed and leech it using StringIO. b) and one which handles reading and calls the processing function and then writes the file. The function it calls would be passed in as an optional parameter and defaults to function (a) /Jorgen -- // Jorgen Grahn grahn@Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org R'lyeh wgah'nagl fhtagn! -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception passing
Den Fri, 23 Mar 2007 07:38:47 -0700 skrev Alex Martelli: Thomas Dybdahl Ahle [EMAIL PROTECTED] wrote: This works quite good, but it is a hell to debug. Instead of getting a log message to the line which originally raised the exception. As you see, the traceback is maintained when you just raise, though it's altered when you raise e. Thanks a lot :D -- http://mail.python.org/mailman/listinfo/python-list
Re: Mocking OpenOffice in python?
Méta-MCI schreef: Hi! Under windows, I drive OOo, from Python, via COM/OLE-automation. It's run OK, but some bugs, in the OOo-COM-Python, had stop my devloppements... However, this way is usable (only on Win, ok?) Do you have some (small) example program of using OOo from Python via COM/OLE? Can you give any indication of the kind of bugs that you hit? kind regards, Gerrit Muller Gaudi Systems Architecting www.gaudisite.nl -- http://mail.python.org/mailman/listinfo/python-list
Re: why brackets commas in func calls can't be ommited? (maybe it could be PEP?)
On Thu, 22 Mar 2007 14:20:42 -0400, Steve Holden [EMAIL PROTECTED] wrote: ... I'm in danger of getting short-tempered on c.l.py for the first time in a long time. If you think that five arguments is an excessive number for a function then you live in a world of toy programs. Or at least in a world where people have good taste and time to Do It Right(tm). I personally believe many five-argument methods would be better off refactored. I killed one today which had fourteen (most of which were unused). But I don't pretend that it's always worth the effort of doing that, in the real world. /Jorgen -- // Jorgen Grahn grahn@Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org R'lyeh wgah'nagl fhtagn! -- http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
Jorgen Grahn [EMAIL PROTECTED] wrote: On 23 Mar 2007 12:19:15 GMT, Duncan Booth [EMAIL PROTECTED] wrote: killkolor [EMAIL PROTECTED] wrote: I have a unittest framework that tests a single function that in turn works with files (takes input and outputs in the same file, no return values). I would want to split that function into two: a) one which does the processing, but not working with a file, Better to make it work with a file, in the sense that it works with file-like objects so you can feed and leech it using StringIO. I'm assuming, perhaps wrongly, that something which takes input from a file and produces output into the same file is doing something beyond the simple interface supported by StringIO. So I was guessing either that something like FileInput is involved, or seeking and modifying in-place. Anyway, the principle is the same: you make sure no function does more than one job, and you make sure that all functions are testable independently. -- http://mail.python.org/mailman/listinfo/python-list
How to list current line in pdb?
Hi all, Using the pdb shell, after repeatedly entering 'l' (lowercase 'L'), how do I jump back to listing the current line again if I don't remember exactly what line my current line is? Do I just have to list an early line in the code and repeatedly list from there until I see the '-' indicating the current line? Thanks, Chris -- http://mail.python.org/mailman/listinfo/python-list
Re: fine grain logging cotrol
Peter Otten wrote: Eric S. Johansson wrote: [in private mail -- please don't, Eric] sorry. my preference is for private mail. it's my way of trying to be kind to others by reducing list clutter. I don't understand. The logging package detects the function name without user intervention. not in 2.4 afaik. according to the docs for debug/info it the only kwargs which is inspected is exc_info. Perhaps it's time to step back and explain what you want to achieve rather than how you proceed. print a log message if a predicate yields true. should be able to have different predicates. the desired predicate is a match on class, method, and level number. class and method should be found automatically by the logging predicate code. apologies again for violating your email protocol and thanks for the help. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to list current line in pdb?
Chris Lasher [EMAIL PROTECTED] wrote: Using the pdb shell, after repeatedly entering 'l' (lowercase 'L'), how do I jump back to listing the current line again if I don't remember exactly what line my current line is? Do I just have to list an early line in the code and repeatedly list from there until I see the '-' indicating the current line? Try: (Pdb) alias ll u;;d;;l and thereafter the 'll' command will list the current line (unless you are in the uppermost stack frame in which case it goes down one stackframe instead). Save the alias in your .pdbrc file. -- http://mail.python.org/mailman/listinfo/python-list
Re: GCC 4.1.2 installer for Python distutils compilation
On Mar 18, 6:22 pm, Giovanni Bajo [EMAIL PROTECTED] wrote: On 18/03/2007 13.24, DavidRushbywrote: Even though I have access to MSVC 7.1, so I don't really need MinGW myself, [...] But remember that GCC 4.1.2 is almost 4 years newer than MSVC 7.1, and I found it to produce more optimized code (especially for C++). Since it's a free alternative, it might be worth to give it a go :) I just wrote a high-performance Windows-1251 codec in C (an optimized alternative to Python's including 'cp1251' codec). On Windows 2000 / Prescott PIV, GCC 4.1.2 does indeed produce code that is 30% faster than MSVC (this is with aggressive optimization switch tinkering on both compilers). This is for fairly simple, non- floating-point C code. -- http://mail.python.org/mailman/listinfo/python-list
Re: Wikipedia and a little piece of Python History
Jorgen Grahn [EMAIL PROTECTED] writes: Wikipedia should have some guideline for referencing Usenet postings, somewhere ... It has one (WP:RS). The guideline is don't do it. The problem is that these guidelines arise out of disputes, i.e. maybe someone tried to use a Usenet post to prove something about a politician, and the result (reasonably) was a guideline that said Usenet posts weren't reliable sources of info. In the cases where it's something ok, the editors use common sense and leave it alone. Until that bot got loose and started removing all Usenet links whether they were ok or not. -- http://mail.python.org/mailman/listinfo/python-list
Re: Been a while...
James Stroud [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hawk this list and try to pick off easy answers before anyone else. That's what I do. The pressure is to be right, because if you're not, you hear about it in a hurry. That is actually an excellent suggestion. Even if you can't answer a question, finding interesting and comprehanesible questions and then studying the various follow up posts is an excellent way to sharpen your Python skills, and broaden your knowledge about not only Python syntax and common pitfalls but about what modules are typically applied to various kinds of problems. -ej -- http://mail.python.org/mailman/listinfo/python-list
Multi-line strings with formatting
When constructing a particularly long and complicated command to be sent to the shell, I usually do something like this, to make the command as easy as possible to follow: commands.getoutput( 'mycommand -S %d -T %d ' % (s_switch, t_switch) + '-f1 %s -f2 %s ' % (filename1, filename2) + ' %s' % (log_filename) ) Can anyone suggest a better way to construct the command, especially without the + sign at the end of each line (except the last) ? If I take out the +, then I need to move all the variables to the end, as so: commands.getoutput( 'mycommand -S %d -T %d ' '-f1 %s -f2 %s ' ' %s' % (s_switch, t_switch, filename1, filename2, log_filename) ) or: commands.getoutput( '''mycommand -S %d -T %d \ -f1 %s -f2 %s \ %s''' % (s_switch, t_switch, filename1, filename2, log_filename) ) but having the variables line-by-line as in the first example is so much easier to edit, is it not? -- http://mail.python.org/mailman/listinfo/python-list
Re: Multi-line strings with formatting
On Fri, 2007-03-23 at 09:54 -0700, [EMAIL PROTECTED] wrote: When constructing a particularly long and complicated command to be sent to the shell, I usually do something like this, to make the command as easy as possible to follow: commands.getoutput( 'mycommand -S %d -T %d ' % (s_switch, t_switch) + '-f1 %s -f2 %s ' % (filename1, filename2) + ' %s' % (log_filename) ) Can anyone suggest a better way to construct the command, especially without the + sign at the end of each line (except the last) ? If I take out the +, then I need to move all the variables to the end, as so: commands.getoutput( 'mycommand -S %d -T %d ' '-f1 %s -f2 %s ' ' %s' % (s_switch, t_switch, filename1, filename2, log_filename) ) or: commands.getoutput( '''mycommand -S %d -T %d \ -f1 %s -f2 %s \ %s''' % (s_switch, t_switch, filename1, filename2, log_filename) ) You get the best of both worlds, i.e. one big multiline string with in-line parameters, by using a mapping: commands.getoutput( '''mycommand -S %(s_switch)d -T %(t_switch)d \ -f1 %(filename1)s -f2 %(filename2)s \ %(log_filename)s''' % locals() ) Of course I'm assuming that s_switch etc. are local variables. If they're not, well, they ought to be. -Carsten -- http://mail.python.org/mailman/listinfo/python-list
detect suprocess interaction
I'm using subprocess to carry out svn commands (probably should use the svn api package, but that's a dependency too far). Anyhow my code looks like from subprocess import Popen, PIPE p = Popen((svn,'ls',u),stdout=PIPE,stderr=PIPE) i = p.wait() and this sort of thing works well under most circumstances. However, when this code is executed for the very first time by a particular user it hangs waiting on user input. This code is being used purely for testing correctness of a particular svn url so in the normal case we want to throw away both stdout and stderr. In the exceptional case is it possible to detect that input is required and only in that case issue the current contents of stdout (presumably a request for a password)? Clearly I need to supply some kind of input filelike object, but is this sort of thing possible. -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
Compiler-AST-Walk-Visitor: Any Examples or Documentation?
Hello, I'm trying to write something that will translate Python code to pseudo-code (for teaching purposes). Googling around indicated that the compiler module is pertinent, especially creating a visitor to walk the generated AST: http://docs.python.org/lib/module-compiler.html I can build the AST, but I can't figure out how to write the visitor. The package documentation didn't help me out that much, and I couldn't find any examples. In fact, google only came up with this unanswered related question: http://mail.python.org/pipermail/python-list/2006-July/392716.html Any help is appreciated. Thanks and Bye, Efrat -- http://mail.python.org/mailman/listinfo/python-list
Re: fine grain logging cotrol
Eric S. Johansson wrote: Peter Otten wrote: Eric S. Johansson wrote: [in private mail -- please don't, Eric] sorry. my preference is for private mail. it's my way of trying to be kind to others by reducing list clutter. It is not list clutter in my book; it gives others the chance to correct, add to, or even profit from our conversation. I don't understand. The logging package detects the function name without user intervention. not in 2.4 afaik. Hmm, I must have overread that constraint in your previous posts... Here is yet another revision of my example then: import logging import sys class LoggedType(type): def __new__(mcl, name, bases, classdict): def get_logger(self): return logging.getLogger(%s.%s % (name, sys._getframe(1).f_code.co_name)) classdict[_%s__logger % name] = property(get_logger) return type.__new__(mcl, name, bases, classdict) class Logged: __metaclass__ = LoggedType class Felis(Logged): def alpha(self): self.__logger.info(Felis.alpha) def gamma(self): self.__logger.info(Felis.gamma) class Catus(Felis): def alpha(self): self.__logger.info(Catus.alpha) def beta(self): self.__logger.info(Catus.beta) if __name__ == __main__: logging.basicConfig( format=EXPECTED %(message)s GOT %(name)s, level=logging.INFO) f = Felis() f.alpha() f.gamma() c = Catus() c.alpha() c.beta() c.gamma() Peter -- http://mail.python.org/mailman/listinfo/python-list
exit to interpreter?
Hi, I'm writing a function that polls the user for keyboard input, looping until it has determined that the user has entered a valid string of characters, in which case it returns that string so it can be processed up the call stack. My problem is this. I'd also like it to handle a special string (e.g. 'quit'), in which case control should return to the Python command line as opposed to returning the string up the call stack. sys.exit seemed like a good choice, but it exits the python interpreter. I could use an exception for this purpose, but was wondering if there's a better way? --b -- http://mail.python.org/mailman/listinfo/python-list
Re: How to list current line in pdb?
On Mar 23, 11:56 am, Duncan Booth [EMAIL PROTECTED] wrote: Chris Lasher [EMAIL PROTECTED] wrote: Using the pdb shell, after repeatedly entering 'l' (lowercase 'L'), how do I jump back to listing the current line again if I don't remember exactly what line my current line is? Do I just have to list an early line in the code and repeatedly list from there until I see the '-' indicating the current line? Try: (Pdb) alias ll u;;d;;l and thereafter the 'll' command will list the current line (unless you are in the uppermost stack frame in which case it goes down one stackframe instead). Save the alias in your .pdbrc file. Alright. Thanks, Duncan! -- http://mail.python.org/mailman/listinfo/python-list
Re: finally for unit test
On Mar 23, 5:18 am, killkolor [EMAIL PROTECTED] wrote: I have .. a single function that .. works with files (takes input and outputs in the same file, no return values). That function could cause problems. If your function reads in the whole file, modifies the data, and then overwrites the file, what would happen if something unforeseen happened and your program crashed after writing one line to the file? All the data in memory would go poof! and your file would contain 1 line it--effectively erasing the entire contents of the file. -- http://mail.python.org/mailman/listinfo/python-list
Re: exit to interpreter?
On Mar 23, 12:52 pm, belinda thom [EMAIL PROTECTED] wrote: Hi, I'm writing a function that polls the user for keyboard input, looping until it has determined that the user has entered a valid string of characters, in which case it returns that string so it can be processed up the call stack. My problem is this. I'd also like it to handle a special string (e.g. 'quit'), in which case control should return to the Python command line as opposed to returning the string up the call stack. sys.exit seemed like a good choice, but it exits the python interpreter. I could use an exception for this purpose, but was wondering if there's a better way? --b If you're using a function, wouldn't using the keyword return work? Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: exit to interpreter?
On Mar 23, 2007, at 11:04 AM, [EMAIL PROTECTED] wrote: On Mar 23, 12:52 pm, belinda thom [EMAIL PROTECTED] wrote: Hi, I'm writing a function that polls the user for keyboard input, looping until it has determined that the user has entered a valid string of characters, in which case it returns that string so it can be processed up the call stack. My problem is this. I'd also like it to handle a special string (e.g. 'quit'), in which case control should return to the Python command line as opposed to returning the string up the call stack. sys.exit seemed like a good choice, but it exits the python interpreter. I could use an exception for this purpose, but was wondering if there's a better way? --b If you're using a function, wouldn't using the keyword return work? Mike No, because that just returns to the caller, which is not the Python interpreter. -- http://mail.python.org/mailman/listinfo/python-list
Re: On Java's Interface (the meaning of interface in computer programing)
Lew wrote: But if Xah were being trollish, why didn't they jump on my response and call me names? I'm not sure he's a proper troll. Unfortunately, he seems to be the kind of person who thinks that reading Java for Dummies makes one a self-sufficient expert on Java and philosopher of programming languages to boot, and who is very eager to bestow upon the world all his brilliant insights. At least, that explanation is consistent with his historic behavior. -- John W. Kennedy Only an idiot fights a war on two fronts. Only the heir to the throne of the kingdom of idiots would fight a war on twelve fronts -- J. Michael Straczynski. Babylon 5, Ceremonies of Light and Dark * TagZilla 0.066 * http://tagzilla.mozdev.org -- http://mail.python.org/mailman/listinfo/python-list
Re: Multi-line strings with formatting
Carsten Haese wrote: On Fri, 2007-03-23 at 09:54 -0700, [EMAIL PROTECTED] wrote: When constructing a particularly long and complicated command to be sent to the shell, I usually do something like this, to make the command as easy as possible to follow: commands.getoutput( 'mycommand -S %d -T %d ' % (s_switch, t_switch) + '-f1 %s -f2 %s ' % (filename1, filename2) + ' %s' % (log_filename) ) Can anyone suggest a better way to construct the command, especially without the + sign at the end of each line (except the last) ? If I take out the +, then I need to move all the variables to the end, as so: commands.getoutput( 'mycommand -S %d -T %d ' '-f1 %s -f2 %s ' ' %s' % (s_switch, t_switch, filename1, filename2, log_filename) ) or: commands.getoutput( '''mycommand -S %d -T %d \ -f1 %s -f2 %s \ %s''' % (s_switch, t_switch, filename1, filename2, log_filename) ) You get the best of both worlds, i.e. one big multiline string with in-line parameters, by using a mapping: commands.getoutput( '''mycommand -S %(s_switch)d -T %(t_switch)d \ -f1 %(filename1)s -f2 %(filename2)s \ %(log_filename)s''' % locals() ) Of course I'm assuming that s_switch etc. are local variables. If they're not, well, they ought to be. -Carsten If that doesn't suit then build a list: l = [ 'mycommand -S %d -T %d ' % (s_switch, t_switch) , '-f1 %s -f2 %s ' % (filename1, filename2) , ' %s' % (log_filename) ] and then return commands.getoutput(.join(l)). regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://del.icio.us/steve.holden Recent Ramblings http://holdenweb.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: #!/usr/bin/env python 2.4?
In article [EMAIL PROTECTED], Gabriel Genellina wrote: Uh... I never thought it was an implied formula there - that F0 had to come from 1.5 = 15 = 0xF. I think it should be stated much more clearly. I'm not sure what you're saying. You are correct that the documentation is rather vague. The 'f0' comes from 'final release' I think. -- http://mail.python.org/mailman/listinfo/python-list
Re: Still the __new__ hell ...
Gabriel Genellina escreveu: En Wed, 21 Mar 2007 07:51:32 -0300, Bruno Desthuilliers [EMAIL PROTECTED] escribió: Paulo da Silva a écrit : As a relatively inexperient in python, how could I know that a 'string' is an instance of basestring? By reading this newsgroup ?-) Or asking Python itself: type(any string).mro() [type 'str', type 'basestring', type 'object'] --Gabriel Genellina Good! ;-) Paulo -- http://mail.python.org/mailman/listinfo/python-list
Join strings - very simple Q.
Hi! I was told in this NG that string is obsolet. I should use str methods. So, how do I join a list of strings delimited by a given char, let's say ','? Old way: l=['a','b','c'] jl=string.join(l,',') New way? Thanks Paulo -- http://mail.python.org/mailman/listinfo/python-list
Re: Join strings - very simple Q.
Paulo da Silva [EMAIL PROTECTED] writes: Hi! I was told in this NG that string is obsolet. I should use str methods. So, how do I join a list of strings delimited by a given char, let's say ','? Old way: l=['a','b','c'] jl=string.join(l,',') New way? Dunno if it's the new way, but you can do: ''.join(l) -- http://mail.python.org/mailman/listinfo/python-list
Re: Join strings - very simple Q.
On Mar 23, 2:37 pm, Paulo da Silva [EMAIL PROTECTED] wrote: Hi! I was told in this NG that string is obsolet. I should use str methods. So, how do I join a list of strings delimited by a given char, let's say ','? Old way: l=['a','b','c'] jl=string.join(l,',') New way? Thanks Paulo New way: l=['a','b','c'] jl=','.join(l) -- http://mail.python.org/mailman/listinfo/python-list
Re: Join strings - very simple Q.
Paul Rudin [EMAIL PROTECTED] writes: Paulo da Silva [EMAIL PROTECTED] writes: Hi! I was told in this NG that string is obsolet. I should use str methods. So, how do I join a list of strings delimited by a given char, let's say ','? Old way: l=['a','b','c'] jl=string.join(l,',') New way? Dunno if it's the new way, but you can do: ''.join(l) Err, sorry - missed the comma out - it should be: ','.join(l) -- http://mail.python.org/mailman/listinfo/python-list
Re: Join strings - very simple Q.
I was told in this NG that string is obsolet. I should use str methods. So, how do I join a list of strings delimited by a given char, let's say ','? Old way: l=['a','b','c'] jl=string.join(l,',') New way? Dunno if it's the new way, but you can do: ''.join(l) The OP wants the strings to be comma delimited: jl=','.join(l) -- http://mail.python.org/mailman/listinfo/python-list
Re: How to receive a FILE* from Python under MinGW?
En Fri, 23 Mar 2007 10:07:30 -0300, John Pye [EMAIL PROTECTED] escribió: On Mar 23, 7:48 pm, Gabriel Genellina [EMAIL PROTECTED] wrote: And replace all places where a Python file goes into a C extension, with exportable_file(f) What about calling mscvrt_get_osfhandle from inside the SWIG wrapper? I tried this but it seemed that the function was not exported to the DLL. The idea is to separate both worlds - _get_osfhandle must be called from the C runtime used by Python, not the one linked to your extension. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
ECCOMAS Thematic Conference VipIMAGE 2007 - Last Call for Papers
- (Apologies for cross-posting) International ECCOMAS Thematic Conference VipIMAGE 2007 - I ECCOMAS THEMATIC CONFERENCE ON COMPUTATIONAL VISION AND MEDICAL IMAGE PROCESSING 17-19th October 2007, FEUP, Porto, Portugal http://www.fe.up.pt/VIPIMAGE We would appreciate if you could distribute this information by your colleagues and co-workers. - Dear Colleague, The International Conference VipIMAGE - I ECCOMAS THEMATIC CONFERENCE ON COMPUTATIONAL VISION AND MEDICAL IMAGE PROCESSING will be held in the Faculty of Engineering of University of Porto, Porto, Portugal, on October 17-19, 2007. VipIMAGE will bring together several researchers from around the world representing several fields of study related to Computational Vision and Medical Image Processing, such as: Physics of Medical Imaging; Signal and image Processing; Simulation and Modelling; Data Interpolation, Registration and Compression; Telemedicine; Computer Aided Diagnosis, Surgery, Therapy, and Treatment; Computational Bioimaging and Visualization; Software Development and Grid Computing. The organizers would like to invite you to submit your contributions for VipIMAGE until the end of March. More details can be found in the conference website: http://www.fe.up.pt/VIPIMAGE. Important dates Submission of extended abstracts: March 31, 2007; Authors Notification: April 15, 2007; Lectures and Final Papers: May 15, 2007; Early registration fee: May 31, 2007. Proceedings The proceedings book of VipIMAGE will be will published by the Taylor Francis Group. Invited Lectures - Automatic Generation of Computer Models from Multi-modal Bio-medical Imaging - Chandrajit Bajaj, USA - Computational Bioimaging and Visualization - Chris Johnson, USA - From Geometrical Models to Physiological Models of the Human Body - Hervé Delingette, France - Latest advances in Cardiovascular Informatics - Ioannis A. Kakadiaris, USA - Robust Algorithms for Deformable Contours - Jorge S. Marques, Portugal - Image Sequence Evaluation - Juan J. Villanueva, Spain - Fast Surface Segmentation and remeshing by finding geodesics - Laurent Cohen, France - Processing of Simultaneous acquisition of EEG and fMRI - Mario Forjaz Secca, Portugal - Automatic Construction of Statistical Shape Models using Non-Rigid Registration - Tim Cootes, UK - Theory of Digital Manifolds and its Applications to Medical Imaging - Valentin Brimkov, USA Reinhard Klette, NZ We are looking forward to host you in Porto next October. Kind regards, João Manuel R. S. Tavares Renato Natal Jorge (conference co-chairs) -- http://mail.python.org/mailman/listinfo/python-list
Re: Join strings - very simple Q.
Mike Kent escreveu: ... New way: l=['a','b','c'] jl=','.join(l) I thank you all. Almost there ... I tried .join(l,',') but no success ... :-( Paulo -- http://mail.python.org/mailman/listinfo/python-list
Re: How to receive a FILE* from Python under MinGW?
En Fri, 23 Mar 2007 16:34:22 -0300, Gabriel Genellina [EMAIL PROTECTED] escribió: What about calling mscvrt_get_osfhandle from inside the SWIG wrapper? I tried this but it seemed that the function was not exported to the DLL. The idea is to separate both worlds - _get_osfhandle must be called from the C runtime used by Python, not the one linked to your extension. Ah, but you could import the msvcrt module and get it from there. *ONLY* get_osfhandle. The other function, open_osfhandle, must be from the runtime used by your extension. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: exit to interpreter?
belinda thom wrote: On Mar 23, 2007, at 11:04 AM, [EMAIL PROTECTED] wrote: On Mar 23, 12:52 pm, belinda thom [EMAIL PROTECTED] wrote: Hi, I'm writing a function that polls the user for keyboard input, looping until it has determined that the user has entered a valid string of characters, in which case it returns that string so it can be processed up the call stack. My problem is this. I'd also like it to handle a special string (e.g. 'quit'), in which case control should return to the Python command line as opposed to returning the string up the call stack. sys.exit seemed like a good choice, but it exits the python interpreter. I could use an exception for this purpose, but was wondering if there's a better way? A custom-defined exception is probably the best way to jump out of a stack of nested calls. Mel. -- http://mail.python.org/mailman/listinfo/python-list
Re: exit to interpreter?
On Mar 23, 1:20 pm, belinda thom [EMAIL PROTECTED] wrote: On Mar 23, 2007, at 11:04 AM, [EMAIL PROTECTED] wrote: On Mar 23, 12:52 pm, belinda thom [EMAIL PROTECTED] wrote: Hi, I'm writing a function that polls the user for keyboard input, looping until it has determined that the user has entered a valid string of characters, in which case it returns that string so it can be processed up the call stack. My problem is this. I'd also like it to handle a special string (e.g. 'quit'), in which case control should return to the Python command line as opposed to returning the string up the call stack. sys.exit seemed like a good choice, but it exits the python interpreter. I could use an exception for this purpose, but was wondering if there's a better way? --b If you're using a function, wouldn't using the keyword return work? Mike No, because that just returns to the caller, which is not the Python interpreter. Sorry...I didn't realize you were calling from another function or functions. Duh. I agree with the other writer. Use a custom exception. -- http://mail.python.org/mailman/listinfo/python-list
Using Python to start SNMP service on remote XP hosts...
Hi, I am very new to Python and really just began studying and using it. I read that it was relatively easy to interact with Windows machines with Python and I am desperately looking for something to replace VBScript (not a big fan). I am currently deploying a Gentoo Linux SNMP server running Cacti in my network and would like my XP machines to report traps to this box. The SNMP service is not running by default on the machines in the network and instead of going to each one at a time, I thought I could write a script. Does anyone have any suggestions about how I go about accomplishing this? Thanks so much for any suggestions. -- http://mail.python.org/mailman/listinfo/python-list
Re: Join strings - very simple Q.
On Mar 24, 5:37 am, Paulo da Silva [EMAIL PROTECTED] wrote: Hi! I was told in this NG that string is obsolet. I should use str methods. So, how do I join a list of strings delimited by a given char, let's say ','? Old way: l=['a','b','c'] jl=string.join(l,',') New way? Self-help #1: reading the documentation: http://www.python.org/doc/2.0/lib/string-methods.html ? Change 0 to 5 to get the latest released version -- which hasn't changed the description of the join method AFAICT. Self-help #2: help() at the interactive prompt: Python 2.2.3 (#42, May 30 2003, 18:12:08) [MSC 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. | help(.join) Help on built-in function join: join(...) S.join(sequence) - string Return a string which is the concatenation of the strings in the sequence. The separator between elements is S. | OK, I'll bite: This was new in late 2000 when Python 2.0 was released. Where have you been in the last ~6.5 years? HTH, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Using Python to start SNMP service on remote XP hosts...
On Mar 23, 2:51 pm, KDawg44 [EMAIL PROTECTED] wrote: Hi, I am very new to Python and really just began studying and using it. I read that it was relatively easy to interact with Windows machines with Python and I am desperately looking for something to replace VBScript (not a big fan). I am currently deploying a Gentoo Linux SNMP server running Cacti in my network and would like my XP machines to report traps to this box. The SNMP service is not running by default on the machines in the network and instead of going to each one at a time, I thought I could write a script. Does anyone have any suggestions about how I go about accomplishing this? Thanks so much for any suggestions. It looks like you can use Tim Golden's WMI module to do what you need. See this other post for info: http://www.thescripts.com/forum/thread541366.html You'll have to find out the exact name of the service, loop through and use an IF to test for it and when it is found, try starting it. Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: Create new processes over telnet in XP
Jorgen Grahn wrote: On 23 Mar 2007 03:47:14 -0700, Godzilla [EMAIL PROTECTED] wrote: Hello, How do you create/spawn new processes in XP over telnet using python? I.e. I would like to create a new process and have it running in the background... Ssh -- or even rsh -- are better choices than telnet for these things. For some reason, they are not standard in Windows, though. ssh somewhere some command with arguments rsh somewhere some command with arguments compared to telnet somewhere and then performing expect-like things (basically simulating someone typing some command with arguments in the telnet session). + for an sshd running as a service under XP, look at CopSSH. + hope started process doesn't want a GUI... else, look at UltraVNC running as daemon, and port redirection using ssh. when I terminate the telnet connection, I would what the spawned processes to keep running until I shut it off... That's a function of the remote OS; what happens when its terminal goes away is not under the control of the client side. Maybe the process starting job can be done by a Python program running as Windows service and waiting for requests on a port (or Pyro object or Corba object...). No need for telnet/ssh connection, no logout problem. Just care of possible security problems :-) -- http://mail.python.org/mailman/listinfo/python-list
Python object overhead?
I'm trying to use Python to work with large pipe ('|') delimited data
files. The files range in size from 25 MB to 200 MB.
Since each line corresponds to a record, what I'm trying to do is
create an object from each record. However, it seems that doing this
causes the memory overhead to go up two or three times.
See the two examples below: running each on the same input file
results in 3x the memory usage for Example 2. (Memory usage is
checked using top.)
This happens for both Python 2.4.3 on Gentoo Linux (64bit) and Python
2.3.4 on CentOS 4.4 (64bit).
Is this just the way it is or am I overlooking something obvious?
Thanks,
Matt
Example 1: read lines into list:
# begin readlines.py
import sys, time
filedata = list()
file = open(sys.argv[1])
while True:
line = file.readline()
if len(line) == 0: break # EOF
filedata.append(line)
file.close()
print data read; sleeping 20 seconds...
time.sleep(20) # gives time to check top
# end readlines.py
Example 2: read lines into objects:
# begin readobjects.py
import sys, time
class FileRecord:
def __init__(self, line):
self.line = line
records = list()
file = open(sys.argv[1])
while True:
line = file.readline()
if len(line) == 0: break # EOF
rec = FileRecord(line)
records.append(rec)
file.close()
print data read; sleeping 20 seconds...
time.sleep(20) # gives time to check top
# end readobjects.py
--
http://mail.python.org/mailman/listinfo/python-list
ANN: wxPython 2.8.3.0
Announcing -- The 2.8.3.0 release of wxPython is now available for download at http://wxpython.org/download.php. This release includes a number of bug fixes and also some new enhancements, including updates to the XRCed tool and the new InspectionTool. Source code is available, as well as binaries for both Python 2.4 and 2.5, for Windows and Mac, as well some pacakges for various Linux distributions. A summary of changes is listed below and also at http://wxpython.org/recentchanges.php. What is wxPython? - wxPython is a GUI toolkit for the Python programming language. It allows Python programmers to create programs with a robust, highly functional graphical user interface, simply and easily. It is implemented as a Python extension module that wraps the GUI components of the popular wxWidgets cross platform library, which is written in C++. wxPython is a cross-platform toolkit. This means that the same program will usually run on multiple platforms without modifications. Currently supported platforms are 32-bit Microsoft Windows, most Linux or other Unix-like systems using GTK2, and Mac OS X 10.3+, in most cases the native widgets are used on each platform to provide a 100% native look and feel for the application. Changes in 2.8.3.0 -- Added wx.ToolBar.SetToolNormalBitmap and SetToolDisabledBitmap methods. (Keep in mind however that the disabled bitmap is currently generated on the fly by most native toolbar widgets, so this SetToolDisabledBitmap method won't have any affect on them...) Refactored the inspection tool such that it can be used as a wx.App mix-in class as it was used before (with the wx.lib.mixins.inspect module) and also as a non mix-in tool (using wx.lib.inspect.InspectionTool). Add wx.lib.mixins.treemixin from Frank Niessink. Added the wx.SizerFlags class, and also added AddF, InsertF and PrependF methods to wx.Sizer. The wxSizerFlags class provides a convienient and easier to read way to add items to a sizer. It was added as a new set of methods of the wx.Sizer class so as to not disturb existing code. For example, instead of writing:: sizer.Add(ctrl, 0, wx.EXPAND | wx.ALL, 10) you can now write:: sizer.AddF(ctrl, wx.SizerFlags().Expand().Border(wx.ALL,10)) Will Sadkin provided a patch for the wx.lib.masked package that fixes its support for using the navigation keys on the numeric keypad. wx.lib.plot: patch #1663937 to allow user to turn off scientific notation on plot. wxGTK: Most of the remaining TODOs for the wx.GraphicsContext on wxGTK have been done. This includes implementations for GetTextExtent, Clip, DrawBitmap, fixing the drawing position of text to be at the upper left corner instead of the baseline, etc. wx.lib.customtreectrl patches from Andrea: 1. ExpandAll has been renamed as ExpandAllChildren, and the new ExpandAll now takes no input arguments (consistent with wx.TreeCtrl) 2. ctstyle keyword is now defaulted to 0: every style related to CustomTreeCtrl and the underlying wx.PyScrolledWindow should be declared using the keyword style only. For backward compatibility, ctstyle continues to work as I merged ctstyle and style in the __init__ method. 3. GetClassDefaultAttributes is now a classmethod. 4. UnselectAll bug fixed. Renamed the wx.lib.inspect and wx.lib.mixins.inspect modules to inspection, in order to avoid conflicts with the inspect module in the standard Python library. Lots of changes to XRCed from Roman Rolinsky: * Preferences for default sizeritem parameters for new panels and controls can be configured (FilePreferences...). * Implemented comment object for including simple one-line comments and comment directives as tree nodes. No validation is performed for a valid XML string so comments must not contain --. Comment directive is a special comment starting with '%' character, followed by a line of python code. It is executed using 'exec' when the resource file is opened. This is useful to import plugin modules containing custom handlers which are specific to the resource file, hovewer this is of course a security hole if you use foreign XRC files. A warning is displayed if the preference option 'ask' is selected (by default). * Added support for custom controls and plugin modules. Refer to this wxPythonWiki for the details: http://wiki.wxpython.org/index.cgi/XRCed#custom * Tool panel sections can be collapsed/expanded by clicking on the label of a tool group. * Some undo/redo and other fixes. * Fixes for wxMSW (notebook highlighting, control sizes, tree Unselect). * Notebook page highlighting fix. Highlight resizes when the window is resized. ParamUnit spin button detects event handler re-entry (wxGTK probably has a bug in wxSpinButton with repeated events). * Fix for dealing with empty 'growable' property, using
Re: Python object overhead?
On Fri, 23 Mar 2007 15:11:35 -0600, Matt Garman wrote: Is this just the way it is or am I overlooking something obvious? Matt, If you iterate over even the smallest object instantiation a large amount of times, it will be costly compared to a simple list append. I don't think you can get around some overhead with the objects. However, in terms of generally efficiency not specifically related to object instantiation, you should look into xreadlines(). I'd suggest doing the following instead of that while loop: for line in open(sys.argv[1]).xreadlines(): .. -- Mark Nenadov - skype: marknenadov, web: http://www.marknenadov.com - Glory is fleeting, but obscurity is forever. -- Napoleon Bonapart -- http://mail.python.org/mailman/listinfo/python-list
