modules in diff. file
hi, i have a prog. and i want diving the code in different files. there will be one mail file which will call modules or variables(global) from differnet files how can i do this. code is very big and i it's getting difficult to manage in same file. thanx in advance -- http://mail.python.org/mailman/listinfo/python-list
Re: modules in diff. file
On 18 Sep 2006 00:19:20 -0700, JyotiC <[EMAIL PROTECTED]> wrote: > hi, > > i have a prog. and i want diving the code in different files. > there will be one mail file which will call modules or > variables(global) from differnet files > how can i do this. > code is very big and i it's getting difficult to manage in same file. > > thanx in advance All of this is covered in any good Python tutorial, including the official documentation. Simply move code you want to seperate into their own python files. They will become importable modules, so foo.py can be accessed with `import foo` from another module. Now, be careful because you can't circularly import the modules. That means that if you have module foo and module bar, they can't both import each other. You'll have to take that into consideration when you seperate the code into these modules. you can usually break up a moderately sized project such that one main module imports all the others, and none of them need to know about one another. Python Tutorial - Modules http://docs.python.org/tut/node8.html -- http://mail.python.org/mailman/listinfo/python-list
incompatible exit values between python 2.4 and 2.5
I have a small C program that restarts a python based server
application if the exit value of the
system("python -m pythonscript arg1 arg2 ...")
is greater than 127 (using WEXITSTATUS on the result of system(..))
If the server really needs to stop I exit with
sys.exit(0)
but if I just want it to restart (to reread all modules) I can do
sys.exit(128)
With python 2.4, if pythonscript.py could not be found, the exit value
would be 2 and if there was some syntax error, or other exception
raised, the exit value would be 1.
While trying this out with Python 2.5 I found that the exit value on
error is always 255, so I have to change my script (not a big deal).
However two questions came up while finding out what was
the difference:
1) is this change of behaviour documented somewhere and did I miss
that, or has this not been documented (yet)
2) Is there a build-in way to set the exit value for Python in case an
exception is raised that is uncaught and causes python to terminate? (I
have now implemented something using
try:
...
except ImportError, comment:
sys.exit(2)
except:
sys.exit(1)
but I still have to figure out how to print the stacktrace before
exiting with specific values.)
Regards
Anthon
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Re: Pythondocs.info : collaborative Python documentation project
[EMAIL PROTECTED] wrote: > > That's why I have started a collaborative project to make a user > contributed Python documentation. The wiki is online here: > http://www.pythondocs.info Frankly I'm tired of these yet-another-wiki announcements! Who is supposed to fill them with content? If you have improvements to the official docs put them into Python's SF tracker: http://sourceforge.net/tracker/?func=add&group_id=5470&atid=305470 Ciao, Michael. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python programs always open source?
Guy Fawkes schrieb: > I don't want my program to > be open-source and so far all the Python programs I've seen included the > source code. That's one of the great freedoms of Python and its licence: You are free to chose the licence for your product. No GPLish "you must be as free as we", more BSDish: "Do what you want, do not come crying" > Is it possible to make an executable with only bytecode? I use py2exe with its "new" (~1 year) single file feature with great success. I even succeeded in including a virtual static directory for a webserver within that file. To be exact, it is not really 1 file, but 2, as you often have to distribute msvcr71.dll with it - except for those computers having i.e. MS Office 11 installed, there it is allready present. Combining py2exe's single file distributable and upx compression I achieve fairly compact "just drop and use" applications without a real need for installation. I do not care about people decompiling (customers get the source code on request, if they are interested). It would be possible - but those who have the time and knowledge to dissect and decompile those upxed py2exed files and still make a profit would probably not see a reason to buy my software anyway :) Harald -- http://mail.python.org/mailman/listinfo/python-list
Re: incompatible exit values between python 2.4 and 2.5
> 1) is this change of behaviour documented somewhere and did I miss > that, or has this not been documented (yet) > 2) Is there a build-in way to set the exit value for Python in case an > exception is raised that is uncaught and causes python to terminate? (I > have now implemented something using >try: > ... >except ImportError, comment: > sys.exit(2) >except: > sys.exit(1) > but I still have to figure out how to print the stacktrace before > exiting with specific values.) For the latter, take a look at sys.exc_info() Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Cheese Shop Registration error
The Key ID that the kgpg shows. I tried to paste the key returned by the quiery on the keyserver. but it also doesn't work. I tried everything that has any connection with the key, but everything fails. By the way the key is: 6A61E3AD Richard Jones wrote: > [EMAIL PROTECTED] wrote: > > I tried to register on the Python Cheese Shop, but I constatnly get a > > "GPG key ID is invalid" error. > > > > I made a new GPG key using kgpg, exported the public key to the key > > server, and copy/pasted the Key ID into the registration form... But it > > doesn't work. > > And the key ID you were trying to paste in was? > > > Richard -- http://mail.python.org/mailman/listinfo/python-list
Re: Pythondocs.info : collaborative Python documentation project
[EMAIL PROTECTED] wrote:
> Wildemar Wildenburger wrote:
>> [EMAIL PROTECTED] wrote:
>>> I have read many messages of people complaining about the documentation,
>>> it's lack of examples and the use of complicated sentences that you
>>> need to read 10 times before understanding what it means.
>> >
>> Where have you read that?
>>
>> wildemar
>
> I don't mean to start a flame war about this but here are some
> reference of people, who like me, don't like the current python doc:
> http://xahlee.org/UnixResource_dir/writ/python_doc.html
Xah Lee is a well-known crank.
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Re: How to change font direction?
theju wrote:
> Well here are some self explanatory functions that I've written for
> displaying the text vertically and from right to left. As for rotation
> gimme some more time and i'll come back to you. Also I don't guarantee
> that this is the best method(cos I myself am a newbie), but I can
> guarantee you that it works.
> Here it goes...
>
> im=Image.open("imgfile.jpg")
> draw=ImageDraw.Draw(im)
>
> def verdraw(width,height,spacing,a="Defaulttext"):
> for i in range(0,len(a)):
> draw.text((width,height),a[i],())
> height+=spacing
>
> def right2leftdraw(width,height,spacing,a="Defaulttext"):
> for i in range(0,len(a)):
> draw.text((width,height),a[len(a)-i-1],())
> width += spacing
>
> is a 3 field length tuple is mentioned in the PIL-Handbook.
> Hope you find it useful
> -Theju
>
> Daniel Mark wrote:
>
>> Hello all:
>>
>> I am using PIL to draw some graphics and I need to draw some texts
>> in vertical direction rather than the default left-to-right horizontal
>> direction.
>>
>> Is there anyway I could do that?
>>
>>
>> Thank you
>> -Daniel
>>
>
>
I have done a circular 24-hour dial with the numbers arranged to read
upright as seen from the center. I remember writing each number into a
frame, rotating the frame and pasting it into the dial image at the
right place. I also remember using a transparency mask, so the white
background of the little frame didn't cover up what it happened to
overlap (minute marks). The numbers were black on white, so the frame
was monochrome and could be used as its own transparency mask.
(This could well be an needlessly complicated approach. When
confronting a problem, I tend to weigh the estimated time of hacking
against the estimated time of shopping and reading recipes and often
decide for hacking as the faster alternative.)
Regards
Frederic
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PythonCAD question
Hello NG, I tried to run PythonCad on window and got follwoing traceback: Traceback (most recent call last): File "C:\temp\PythonCAD-DS1-R34\PythonCad.py", line 45, in ? import PythonCAD.Interface.Cocoa.ImageDocument File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\ImageDocument.py", l ine 38, in ? import PythonCAD.Interface.Cocoa.Globals File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\Globals.py", line 23 , in ? from Foundation import NSObject ImportError: No module named Foundation * Waht is the module "Foundation"? Where can I get it? Many thanks in advance! -- Franz Steinhaeusler -- http://mail.python.org/mailman/listinfo/python-list
Re: PythonCAD question
Franz Steinhaeusler wrote: > Hello NG, > > I tried to run PythonCad on window and > got follwoing traceback: > > Traceback (most recent call last): > File "C:\temp\PythonCAD-DS1-R34\PythonCad.py", line 45, in ? > import PythonCAD.Interface.Cocoa.ImageDocument > File > "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\ImageDocument.py", > l > ine 38, in ? > import PythonCAD.Interface.Cocoa.Globals > File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\Globals.py", > line 23 > , in ? > from Foundation import NSObject > ImportError: No module named Foundation > > * Waht is the module "Foundation"? > > Where can I get it? The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is running on a Mac. The missing module is rather a symptom than the cause of the bug. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: PythonCAD question
Peter Otten wrote: > Franz Steinhaeusler wrote: > >> Hello NG, >> >> I tried to run PythonCad on window and >> got follwoing traceback: >> >> Traceback (most recent call last): >> File "C:\temp\PythonCAD-DS1-R34\PythonCad.py", line 45, in ? >> import PythonCAD.Interface.Cocoa.ImageDocument >> File >> "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\ImageDocument.py", >> l >> ine 38, in ? >> import PythonCAD.Interface.Cocoa.Globals >> File "C:\temp\PythonCAD-DS1-R34\PythonCAD\Interface\Cocoa\Globals.py", >> line 23 >> , in ? >> from Foundation import NSObject >> ImportError: No module named Foundation >> >> * Waht is the module "Foundation"? >> >> Where can I get it? > > The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is > running on a Mac. The missing module is rather a symptom than the cause of > the bug. > > Peter Hello Peter, On the homepage, http://www.pythoncad.org/ there is the text: "PythonCAD does run on Windows if you have the Windows ports of the required libraries and modules." -- Franz Steinhaeusler -- http://mail.python.org/mailman/listinfo/python-list
Re: incompatible exit values between python 2.4 and 2.5
Diez B. Roggisch wrote: > > 1) is this change of behaviour documented somewhere and did I miss > > that, or has this not been documented (yet) > > 2) Is there a build-in way to set the exit value for Python in case an > > exception is raised that is uncaught and causes python to terminate? (I > > have now implemented something using > >try: > > ... > >except ImportError, comment: > > sys.exit(2) > >except: > > sys.exit(1) > > but I still have to figure out how to print the stacktrace before > > exiting with specific values.) > > For the latter, take a look at > > sys.exc_info() > or perhaps the traceback module ... Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Re: PythonCAD question
Franz Steinhaeusler wrote: >> The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is >> running on a Mac. The missing module is rather a symptom than the cause >> of the bug. > On the homepage, > http://www.pythoncad.org/ > there is the text: > > > "PythonCAD does run on Windows if you have the Windows > ports of the required libraries and modules." I don't doubt that. Looking into PythonCad.py, though, I find # main routine to start Cocoa-based PythonCad On Windows gtkpycad.py with # main routine to start GTK-based pycad looks more promising... Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Python programs always open source?
"GHUM" <[EMAIL PROTECTED]> writes: > That's one of the great freedoms of Python and its licence: You are > free to chose the licence for your product. No GPLish "you must be > as free as we", more BSDish: "Do what you want, do not come crying" This has nothing to do with the license of Python. Whether Python was distributed under the GPL, BSD or Jack's Own Oddball License, the copyright holder of Python has no say over what license you choose for your own work. So long as you're not distributing some or all of Python itself, or a derivative work, the license for Python has no legal effect on what license you choose for your own work. -- \ "He that would make his own liberty secure must guard even his | `\ enemy from oppression." -- Thomas Paine | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: Where can i download mod_webkit from?
[EMAIL PROTECTED] wrote:
> Hi
>
> I am trying to get webware for python running on Apache. I want to get
> it working with mod_webkit, but for the life of me i can't find a
> webpage where i can download a source for it or maybe an rpm. If
> anyone knows the download page, i'd greatly appreciate if you share it
> with me.
http://www.webwareforpython.org/WebKit/Docs/InstallGuide.html#mod-webkit
"""
The source code and a README file describing how to configure and build
mod_webkit are located in the Webware/WebKit/Adapters/mod_webkit
"""
> Thanks
>
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Re: PythonCAD question
Peter Otten wrote: > Franz Steinhaeusler wrote: > >>> The .../Cocoa/... part in the paths suggests that PythonCAD assumes it is >>> running on a Mac. The missing module is rather a symptom than the cause >>> of the bug. > >> On the homepage, >> http://www.pythoncad.org/ >> there is the text: >> >> >> "PythonCAD does run on Windows if you have the Windows >> ports of the required libraries and modules." > > I don't doubt that. Looking into PythonCad.py, though, I find > > # main routine to start Cocoa-based PythonCad > > On Windows gtkpycad.py with > > # main routine to start GTK-based pycad > > looks more promising... > > Peter Thank you! It laid diretly in front of me. -- Franz Steinhaeusler -- http://mail.python.org/mailman/listinfo/python-list
Re: CONSTRUCT - Adding Functionality to the Overall System
Ilias Lazaridis wrote: > Damjan wrote: > I understand that I can use __metaclass__ to create a class which modifies the behaviour of another class. How can I add this metaclass to *all* classes in the system? (In ruby I would alter the "Class" class) >>> >>>You'd have to set >>> >>>__metaclass__ = whatever >>> >>>at the top of each module whose classes are to get the new behavior. >> >>I think '__metaclass__ = whatever' affects only the creation of classes that >>would otherwise be old-style classes? > > > It seems so: > > http://mail.python.org/pipermail/python-list/2003-June/166572.html > > >>>You can't alter classes which you don't control or create in your code. >> >>I remeber I've seen an implementation of import_with_metaclass somewhere on >>IBM's developerworks. I didn't quite undersntad it though. > > > http://www-128.ibm.com/developerworks/linux/library/l-pymeta.html > > I am not so much interested in old-style, as is start production with > python 2.4 (possibly even with python 2.5). > The fact remains that you won't be able to affect the built-in classes such as int and str - they are hard-coded in C (for CPython, at least), and so their metaclass is also implied and cannot be changed. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: 911 FORGERY bigger than the Protocols of the Learned Elders of Zion
malibu wrote: > tadchem wrote: > > "Protocols of the Elders of Zion" was a fraud > > http://en.wikipedia.org/wiki/The_Protocols_of_the_Elders_of_Zion > > http://ddickerson.igc.org/protocols.html > > http://www.straightdope.com/mailbag/mzionprotocol.html > > http://www.museumofhoaxes.com/hoaxorum/hoaxorum1869.html > > > > The fraud was proven by identifying the sources used by the plagiarist > > in 1921, but there are *still* those who believe it because it > > justifies their racial hatred. > > > > Of course, like the 'Protocols', the 9/11 conspiracy hoax will be > > embraced by those whose will to believe something that justifies their > > irrational prejuduces exceeds their will to understand the implications > > of rational data. > > > > As can be expected, there is a lot of overlap between the hateful > > racists of the antisemitic groups and the delusional paranoids involved > > in the 9/11 conspiracy theories. > > > > Tom Davidson > > Richmond, VA > > There were many people who reported > numerous explosions in the WTC buildings. > When the firefighters arrived all the ground > floor windows had been blown out. > There were explosions in the sub-basement floors > as reported by severely-injured caretakers who > came up from there and by > firefighters on the scene. > > Seismic records substantiate these claims. > > Isn't 'delusional paranoia' a little less > substantive than that? > > Maybe you should actually *look* > at the data- I know as a physicist you've kinda > gotten away from that mindset. One should not confuse clergymen with physicists. Anyone who observes a building freefall into itself and deny a controlled demolition can never be called a physicist. > John -- http://mail.python.org/mailman/listinfo/python-list
Re: CONSTRUCT - Adding Functionality to the Overall System
"Calvin Spealman" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > On 17 Sep 2006 09:22:16 -0700, Ilias Lazaridis <[EMAIL PROTECTED]> > wrote: >> I understand that I can use __metaclass__ to create a class which >> modifies the behaviour of another class. >> >> How can I add this metaclass to *all* classes in the system? >> >> (In ruby I would alter the "Class" class) > > This is a terrible idea. When my, Joe Modulewriter, released my > library of AwesomeCoolClasses, i except my metaclass to be something > particular and if it starts getting wonky and I do anything hackery on > my end with the types, then the end-user's computer might 'splode! > > What I am trying to say, is its a terrible idea to go changing other > peoples' classes at runtime without knowing the real affects of what > is going on. If you are just going to shoot yourself in the foot, why > should we even give you a gun? Reminds me of when I was learning Smalltalk, and modified printOn (ST's equivalent of str()) of the root-of-all-classes object class. I don't remember the exact error I made, but it was a mess undoing it! -- Paul -- http://mail.python.org/mailman/listinfo/python-list
PIL 2.5 win32 binaries?
On the PIL website I read: The current free version is PIL 1.1.5, which has been tested with Python 1.5.2 and newer, including 2.3 and 2.5. but in downloads I cannot see any binaries for windows and Python 2.5 Are they somewhere available? Best wishes, Harald -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL 2.5 win32 binaries?
GHUM schrieb: > On the PIL website I read: > > The current free version is PIL 1.1.5, which has been tested with > Python 1.5.2 and newer, including 2.3 and 2.5. > > but in downloads I cannot see any binaries for windows and Python 2.5 > > Are they somewhere available? > > Best wishes, > > Harald > http://effbot.org/downloads/#PIL Thomas -- http://mail.python.org/mailman/listinfo/python-list
Automatically installing libraries?
Here is a problem I am trying to solve; I am sure there must be an easy way to do it and I just don't know how. I have a rather large application that I am writing. To make it easy for the user to run I have them run a startup.py script. This script will try to load each of the third party libraries the application will need. If it is present, great. If it isn't, I would like to automatically install it. This is the heart of my problem: is there a Python equivalent to PERL's CPAN? Peace, Chaz -- http://mail.python.org/mailman/listinfo/python-list
Re: Automatically installing libraries?
Chaz Ginger wrote: > Here is a problem I am trying to solve; I am sure there must be an easy > way to do it and I just don't know how. > > I have a rather large application that I am writing. To make it easy for > the user to run I have them run a startup.py script. This script will > try to load each of the third party libraries the application will need. > If it is present, great. If it isn't, I would like to automatically > install it. This is the heart of my problem: is there a Python > equivalent to PERL's CPAN? > Check out setuptools: http://peak.telecommunity.com/DevCenter/setuptools HTH, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Automatically installing libraries?
Chaz Ginger wrote:
> Here is a problem I am trying to solve; I am sure there must be an easy
> way to do it and I just don't know how.
>
> I have a rather large application that I am writing. To make it easy for
> the user to run I have them run a startup.py script. This script will
> try to load each of the third party libraries the application will need.
> If it is present, great. If it isn't, I would like to automatically
> install it. This is the heart of my problem: is there a Python
> equivalent to PERL's CPAN?
Not quite. But you should definitively have a look at setuptools before
proceeding to reinventing the SquareWheel(tm):
http://peak.telecommunity.com/DevCenter/setuptools
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Interact with system command prompt
Hi all. I would like to know if there's some python framework able to interact with system command prompt (cmd.exe or /bin/sh, depending on the system) from python. I need something that supports key/path auto completion by pressing TAB button and the possibility to use interactive programs like ftp, gpg or even vi. I would like to write a remote shell application the best featured as possible and I'm wondering if Python is able to emulate the functionalities of applications like telnet or ssh. Thanks in advance for your helping. -- http://mail.python.org/mailman/listinfo/python-list
Re: Interact with system command prompt
billie wrote: > Hi all. I would like to know if there's some python framework able to > interact with system command prompt (cmd.exe or /bin/sh, depending on > the system) from python. > I need something that supports key/path auto completion by pressing TAB > button and the possibility to use interactive programs like ftp, gpg or > even vi. > I would like to write a remote shell application the best featured as > possible and I'm wondering if Python is able to emulate the > functionalities of applications like telnet or ssh. Check out IPython. http://ipython.scipy.org/ Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Interact with system command prompt
Diez B. Roggisch ha scritto: > billie wrote: > > > Hi all. I would like to know if there's some python framework able to > > interact with system command prompt (cmd.exe or /bin/sh, depending on > > the system) from python. > > I need something that supports key/path auto completion by pressing TAB > > button and the possibility to use interactive programs like ftp, gpg or > > even vi. > > I would like to write a remote shell application the best featured as > > possible and I'm wondering if Python is able to emulate the > > functionalities of applications like telnet or ssh. > > Check out IPython. > > http://ipython.scipy.org/ > > > Diez Thank you. It seems to me a powerful tool. I'll try to play with it. -- http://mail.python.org/mailman/listinfo/python-list
Interfacing my chess client with GNU chess using python
Hello, I have written a chess client using python which is a graphic interface to play chess. It is at present a two player version, players move their peices by clicking two squares on the board as in any other chess clients. Now i want to interface my program with the already available gnuchess program. Basically i want to feed the user input to the gnuchess and get the output and then display in my GUI. I have read about Popen but i couldn't figure out how to do it. Is there any other better ways of doing it. Any help would be appreciated. -- -8<--8<--8<--8< Varun Hiremath Undergraduate Student, Aerospace Engg. Department, Indian Institute of Technology Madras, Chennai, India --- Webpage : http://www.ae.iitm.ac.in/~ae03b032 --- -- http://mail.python.org/mailman/listinfo/python-list
Re: Python programs always open source?
Ben Finney wrote: > So long as you're not distributing some or all of Python itself, or a > derivative work, the license for Python has no legal effect on what > license you choose for your own work. How many Python programs use nothing from the standard library? -- http://mail.python.org/mailman/listinfo/python-list
Multiping
dear all i have the following code that keeps on pinging several sites infinitely i was wondering if anyone could help me out in how to make the results for each set of loops of the pings to be displayed in an excel file? i need to use the maximum and minimum delay for my project. thank you for any response === import threadingimport osimport Queueimport timefrom time import sleep def showResponse(args): """Pretty prints passed tuple to stdout""" ip, stdoutLi, threadName = args print '%s \t\t\t\t\t\n' % (ip) for line in stdoutLi: line = line.strip() if not line: continue print '\t' + line print '-'*72 class Pinger(threading.Thread): def __init__(self, host, queue): threading.Thread.__init__(self) self.__host = host self.__queue = queue self.setDaemon(1) def run(self): pingCmd = "ping -n 10 -w 1000 " + self.__host childStdout = os.popen(pingCmd) result = (self.__host, childStdout.readlines(), self.getName()) childStdout.close() self.__queue.put(result) if __name__ == '__main__': hostLi = ['www.google.com','www.yahoo.co.uk'] # assign while 1: # infinite loop, 1 is always true q = Queue.Queue() startA = time.time() for host in hostLi: # for every host in hostLi Pinger(host,q).start() for i in hostLi: showResponse(q.get()) # removes an item out of the list / queue === On Yahoo!7 Fuel Price Watch - Find and map the cheapest petrol prices in Australia -- http://mail.python.org/mailman/listinfo/python-list
[ANN] Code Golf Challenge : 1,000 Digits Of Pi
Hi all, Code Golf's 12th challenge has just been added to the site. It asks you to calculate the first 1,000 digits of Pi - Something I'm sure most of you have thought about, but never done. You can see the challenge at : http://codegolf.com/1000-digits-of-pi For those who haven't heard of codegolf.com, it can be described as "allowing you to show off your code-fu by trying to solve coding problems using the least number of keystrokes." The site currently supports Perl, PHP, Python and Ruby with Scheme to (hopefully) follow soon. Your entries are automatically executed and scored - No need to wait for someone to validate your code. Other challenges include implementing the Vigenere Cipher, Prime factors, SHA-256 Hashing as well as the obvious 99 Bottles Of Beer. All of the challenges are competitive but there is still scope to well in them, even if you're new to the site. I hope some of you will find this interesting, and sorry for disturbing you if not! Have fun, Carl. -- http://mail.python.org/mailman/listinfo/python-list
Re: Interact with system command prompt
Uhm... It seems that IPython got some problems: http://ipython.scipy.org/doc/manual/node12.html In details: >Note that this does not make IPython a full-fledged system shell. In >particular, it has >no job control, so if you type Ctrl-Z (under Unix), you'll >suspend pysh itself, not the >process you just started. >What the shell profile allows you to do is to use the convenient and powerful >syntax of >Python to do quick scripting at the command line. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python programs always open source?
Leif K-Brooks wrote: > Ben Finney wrote: > >>So long as you're not distributing some or all of Python itself, or a >>derivative work, the license for Python has no legal effect on what >>license you choose for your own work. > > > How many Python programs use nothing from the standard library? That doesn't matter either. The required copyright statements are included in the Python interpreter. There is no reason to fear distributing Python as a part of either open source or proprietary works, and Guido framed the original license to allow precisely such uses. Later versions have retained the same spirit. The official license doesn't take a lot of understanding or legalese. Try it: http://www.python.org/download/releases/2.4.2/license/ regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: Multiping
Fransiska M Argasetya wrote: > dear all > > i have the following code that keeps on pinging several sites infinitely > > i was wondering if anyone could help me out in how to make the results > for each set of loops of the pings to be displayed in an excel file? i > need to use the maximum and minimum delay for my project. > > thank you for any response > I'm afraid my only response is to ask you to stop posting the same question multiple times ... and just wait for someone to answer the question! If there's no reply in 48 hours a brief reminder (rather than a complete re-post) might be in order. Until then, patience should be the order of the day. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: Python programs always open source?
Steve Holden wrote: > Leif K-Brooks wrote: >> Ben Finney wrote: >> >>> So long as you're not distributing some or all of Python itself, or a >>> derivative work, the license for Python has no legal effect on what >>> license you choose for your own work. >> >> >> How many Python programs use nothing from the standard library? > > That doesn't matter either. The required copyright statements are > included in the Python interpreter. There is no reason to fear > distributing Python as a part of either open source or proprietary > works, and Guido framed the original license to allow precisely such > uses. Later versions have retained the same spirit. Yes, I know that. I was replying to Ben Finney's claim that in a hypothetical world where Python was licensed under the GPL, there would still be no restriction on distributing Python programs under a closed-source license. -- http://mail.python.org/mailman/listinfo/python-list
How to stop a running embedded interpreter?
Hi! I have embedded Python in an C++ App. The Python-Interpreter is running in its own Thread (I'm using PThreads). I use PyRun_SimpleString to run Python-Code that the user entered in an editorwindow. I want the user to be able to stop the execution of Python-Code (e.g. using a Cancel-Button). Unfortunately I can't find a way to do this. Of course, I can kill the Interpreter-Thread forcibly with pthread_cancel() but the App will crash if I call any Python API- Function afterwards. I thought about starting 2 Threads in Python: One thread checks for a stop condition (by calling a C-function that checks the Cancel-Button) and the user-code runs in a second thread. The Problem with this approach is that there seems to be no possibility for one Python-thread to kill another. I don't want the user to have to check fo a stop condition himself either. Any help is greatly appreciated. Regards, Dirk -- http://mail.python.org/mailman/listinfo/python-list
win32com InvokeTypes is None
Hi,
I'm encountering an issue where the InvokeTypes method is returning
None and I'm unable to Dispatch a particular COM object from
DMCoreAutomation.dll. Everything works fine except for method
GetItemFields.
Using Python 2.4.2, pywin32 build 209.
Here is some example code (I can provide full source code if needed):
>>> from win32com.client import gencache
>>> file = 'C:\Shoaev\dev_qxdm\mylog.isf'
>>> mod = gencache.GetModuleForProgID('DMCoreAutomation.ItemStoreFiles')
>>> ds = mod.Dispatch('DMCoreAutomation.ItemStoreFiles')
>>> ds
>>> ss = mod.IItemStoreFiles(ds)
>>> ss
>>> hisf = ss.LoadItemStore(file)
>>> dc = ss.GetItem(hisf, 497)
>>> dc
>>> sc = mod.IColorItem(dc)
>>> sc
>>> sc.GetItemKeyText()
u'[0x1007/017]'
>>> df = sc.GetItemFields()
>>> df
>>>
df here is None. Other IColorItem methods work correctly.
Here is the relevant bit from the makepy generated code:
def GetItemFields(self):
"""Get (DB parsed) item fields (returns DB parsed field
interface)"""
ret = self._oleobj_.InvokeTypes(414, LCID, 1, (9, 0), (),)
if ret is not None:
ret = Dispatch(ret, 'GetItemFields', None,
UnicodeToString=0)
return ret
>From pdb, self._oleobj_.InvokeTypes(414, LCID, 1, (9, 0), (),) is
returning None
Any idea what is going on?
Thanks,
Shoaev
--
http://mail.python.org/mailman/listinfo/python-list
Re: Interact with system command prompt
billie wrote: > Uhm... It seems that IPython got some problems: > http://ipython.scipy.org/doc/manual/node12.html > > In details: > >>Note that this does not make IPython a full-fledged system shell. In >>particular, it has >no job control, so if you type Ctrl-Z (under Unix), >>you'll suspend pysh itself, not the >process you just started. > >>What the shell profile allows you to do is to use the convenient and >>powerful syntax of >Python to do quick scripting at the command line. Might be. But it could provide some insight into how to solve your problem. Diez -- http://mail.python.org/mailman/listinfo/python-list
Creating database structures in a portable way
Hi, I am looking for a library that takes an XML file that specifies a table structure, and generates the CREATE/DROP/ALTER SQL statements to create the tables in the database. In particular, I am trying to port a PHP application that currently uses the AdoDB XML schema: > http://phplens.com/lens/adodb/docs-datadict.htm#xmlschema Is there a way to do something similar with the DB-API modules in Python? Thanks, -Samuel -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating database structures in a portable way
Samuel wrote:
> Hi,
>
> I am looking for a library that takes an XML file that specifies a
> table structure, and generates the CREATE/DROP/ALTER SQL statements to
> create the tables in the database.
>
> In particular, I am trying to port a PHP application that currently
> uses the AdoDB XML schema:
>
>> http://phplens.com/lens/adodb/docs-datadict.htm#xmlschema
>
> Is there a way to do something similar with the DB-API modules in
> Python?
FWIW, there's a Python port of adodb:
http://phplens.com/lens/adodb/adodb-py-docs.htm
and parsing XML in Python is quite easy. So you could as well port the
AdoDB XML to Python too.
OTOH, there are other - possibly better (YMMV) - DB abstraction layers
in Python, like SQLAlchemy. And since the above solution requires
(re)writing the xml-parsing part, it might be worth rewriting it so it
knows how to generate SQLAlchemy schemas instead.
My 2 cents...
--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])"
--
http://mail.python.org/mailman/listinfo/python-list
Re: Pythondocs.info : collaborative Python documentation project
Rakotomandimby (R12y) wrote:
> On Sat, 16 Sep 2006 22:43:41 +0200, Daniel Nogradi wrote:
>> Then how about running your site on python and not php?
>
> PHP has "better" documentation... ;-)
> More seriously, I can provide a CPS hosting to nicolasfr if he wants.
Alert ! Unusable undocumented monstruosity ahead...
--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])"
--
http://mail.python.org/mailman/listinfo/python-list
Re: Help me use my Dual Core CPU!
Paul Rubin wrote: > "mystilleef" <[EMAIL PROTECTED]> writes: > > I use D-Bus (Python). I recommend it. I don't know how cross platform > > it is. However, it supports message passing of most built-in (strings, > > ints, lists, dictionaries etc) Python objects accross processes. You > > can mimick clean Erlang-like concurrency with it. It is the future of > > IPC on Desktop Unix. Given Python's crippled threading implementation, > > it can play a role in making your Python applications scalable, with > > regards to concurrency. I am recommending D-Bus because I have used it, > > and I know it works. I didn't read this of a newsgroup or mailing list. > > It looks useful, but as far as I can tell, it's just another IPC > thingie that works through sockets, sort of like pyro without the > remote objects. I don't see how it's related to Erlang-like > concurrency (which means ultralightweight coroutines, not heavyweight > Unix or Windows processes). I think Python concurrency schemes get > interesting when they at least share memory (like POSH). Otherwise I > think of them more as "distributed" than "concurrent". What is revolutionary about Erlang's concurrency model isn't exactly its light weight threads (Python already has a frame work that implements something similar) but the fact that in Erlang each thread behaves like a process and each thread communicates with each other via message passing. In Erlang, threads do not share state information. So all the limitations associated with concurrent programming in other mainstream languages are absent in Erlang. Because threads behave like processes and do not share state, Erlang allows you to create thousands of threads easily without the drawbacks of thread locks. Each thread or process manages its own state. Erlang then provides a protocol to allow each thread to communicate with each other. You can mimic this concept with a light weight event based IPC like D-Bus. D-Bus supports message passing and signals. It also provides you with an easy protocol that allows processes to talk to each other. You are right when you say that D-Bus uses heavy processes while Erlang uses light ones. But the robustness and scalability of Erlang's concurrency model stems from the fact that Erlang's threads are not really threads, but light weight processes that do not share state information. In brief, Erlang's concurrency model is basically IPC programming with light-weight processes. This is what I say you can mimic with D-Bus albeit, unfortunately, with heavy-weight processes. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help me use my Dual Core CPU!
Paul Rubin wrote: > "mystilleef" <[EMAIL PROTECTED]> writes: > > I use D-Bus (Python). I recommend it. I don't know how cross platform > > it is. However, it supports message passing of most built-in (strings, > > ints, lists, dictionaries etc) Python objects accross processes. You > > can mimick clean Erlang-like concurrency with it. It is the future of > > IPC on Desktop Unix. Given Python's crippled threading implementation, > > it can play a role in making your Python applications scalable, with > > regards to concurrency. I am recommending D-Bus because I have used it, > > and I know it works. I didn't read this of a newsgroup or mailing list. > > It looks useful, but as far as I can tell, it's just another IPC > thingie that works through sockets, sort of like pyro without the > remote objects. I don't see how it's related to Erlang-like > concurrency (which means ultralightweight coroutines, not heavyweight > Unix or Windows processes). I think Python concurrency schemes get > interesting when they at least share memory (like POSH). Otherwise I > think of them more as "distributed" than "concurrent". I always forget to bring up Stackless Python in this kinda discussions. I haven't used, but I plan porting one of my projects to it. http://www.stackless.com/about/sdocument_view -- http://mail.python.org/mailman/listinfo/python-list
Re: Help
Rrajal wrote: > Hi there, I am new in this subject so could you please tell me from > where I can get help (or good e-book) of python? > Some books that helped me: Python Bible by Dave Brueck and Stephen Tanner Python Cookbook by Alex Martelli, Anna Martelli Revenscroft & David Ascher Python programming on Win 32 by Mark Hammond & Andy Robinson -Larry Bates -- http://mail.python.org/mailman/listinfo/python-list
Re: Interfacing my chess client with GNU chess using python
Varun Hiremath wrote: > Hello, >I have written a chess client using python which is a graphic >interface to play chess. It is at present a two player version, >players move their peices by clicking two squares on the board as >in any other chess clients. >Now i want to interface my program with the already available >gnuchess program. Basically i want to feed the user input to the >gnuchess and get the output and then display in my GUI. I have read >about Popen but i couldn't figure out how to do it. Is there any >other better ways of doing it. Any help would be appreciated. > The subprocess module may help you... http://docs.python.org/dev/lib/module-subprocess.html Will McGugan -- http://www.willmcgugan.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Pythondocs.info : collaborative Python documentation project
[EMAIL PROTECTED] wrote: > Hi, > > I am a bit disapointed with the current Python online documentation. I > have read many messages of people complaining about the documentation, > it's lack of examples and the use of complicated sentences that you > need to read 10 times before understanding what it means. I agree in some ways, Python docs could have better organization (more links between related things). > That's why I have started a collaborative project to make a user > contributed Python documentation. The wiki is online here: > http://www.pythondocs.info > > This is a fresh new website, so there's not much on it, but I hope to > make it grow quickly. Help and contributions are welcome; Please > register and start posting your own documentation on it. > > Regards, > > Nicolas. > - > http://www.pythondocs.info Here is another URL of such a project, i bookmarked some times: http://www.simisen.com/jmg/cpd/ And there is nothing beyond this URL, like many of such projects. AFAIR there is a starting of Wiki documentation - like PHP docs, one page per function, contributors comments & Co, from one main Python developers (dont remember who start this neither what is the URL). In all case, dont setup another new system, use http://wiki.python.org/moin/, at least your work will not be lost. A+ Laurent. -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
Carl Drinkwater wrote: > Hi all, > > Code Golf's 12th challenge has just been added to the site. It asks you > to calculate the first 1,000 digits of Pi - Something I'm sure most of > you have thought about, but never done. You can see the challenge at : > >http://codegolf.com/1000-digits-of-pi > > For those who haven't heard of codegolf.com, it can be described as > "allowing you to show off your code-fu by trying to solve coding > problems using the least number of keystrokes." > > The site currently supports Perl, PHP, Python and Ruby with Scheme to > (hopefully) follow soon. Your entries are automatically executed and > scored - No need to wait for someone to validate your code. > > Other challenges include implementing the Vigenere Cipher, Prime > factors, SHA-256 Hashing as well as the obvious 99 Bottles Of Beer. All > of the challenges are competitive but there is still scope to well in > them, even if you're new to the site. > > I hope some of you will find this interesting, and sorry for disturbing > you if not! > > Have fun, > Carl. Here's a thought: for your next contest, why not issue a challenge to see who can write a scoreboard that actually works? Overall: This Challenge's Best Entries [View All] (View the Overall | Perl | PHP | Python | Ruby leaderboard.) Rank User Size Language Score [?] 1st primo 62 Ruby 10,000 (v12) 2nd jix 65 Ruby 9,538 (v7) 3rd MadOnion92 Ruby 6,739 (v4) 4th jojo 112 Ruby 5,535 (v6) 5th zeriod 134 Ruby 4,626 (v6) 6th kmeyer 151 Ruby 4,105 (v3) 7th dseverin 159 Ruby 3,899 (v7) 8th bearophile 165 Python3,757 (v5) 9th ToastyX167 Php 3,712 (v20) 10th Leafy 181 Php 3,425 (v8) Perl: This Challenge's Best Entries [View All] (View the Overall | Perl | PHP | Python | Ruby leaderboard.) Rank User Size Language Score [?] 1st _W_ 183 Perl 10,000 (v2) 2nd jojo 524 Perl 3,492 (v2) 3rd zeriod 1,009 Perl 1,813 (v7) PHP: This Challenge's Best Entries [View All] (View the Overall | Perl | PHP | Python | Ruby leaderboard.) Rank UserSize Language Score [?] 1st ToastyX 167 Php 10,000 (v20) 2nd Leafy 181 Php 9,226 (v8) 3rd jojo 539 Php 3,098 (v3) 4th Theory660 Php 2,530 (v1) 5th zeriod 1,002 Php 1,666 (v1) 6th skauert 1,002 Php 1,666 (v1) 7th Makan 1,002 Php 1,666 (v1) 8th _W_ 1,002 Php 1,666 (v4) 9th Stormx 1,004 Php 1,663 (v3) Python: This Challenge's Best Entries [View All] (View the Overall | Perl | PHP | Python | Ruby leaderboard.) Rank User Size Language Score [?] 1st primo 69 Python 10,000 (v11) 2nd bearophile 165 Python4,181 (v5) 3rd jojo 557 Python1,238 (v1) Ruby: This Challenge's Best Entries [View All] (View the Overall | Perl | PHP | Python | Ruby leaderboard.) Rank User Size Language Score [?] 1st primo 62 Ruby 10,000 (v12) 2nd jix 65 Ruby 9,538 (v7) 3rd MadOnion 92 Ruby 6,739 (v4) 4th jojo 112 Ruby 5,535 (v6) 5th zeriod 134 Ruby 4,626 (v6) 6th kmeyer 151 Ruby 4,105 (v3) 7th dseverin 159 Ruby 3,899 (v7) 8th will 544 Ruby 1,139 (v4) -- http://mail.python.org/mailman/listinfo/python-list
Re: Help
I have yet to find a language/community with better online documentation. I taught myself with the Python tutorial found at http://docs.python.org/tut/tut.html. I would look there first. If you are new to programming altogether I think Python may still be a good choice, but that may not be the _best_ reference. Rrajal wrote: > Hi there, I am new in this subject so could you please tell me from > where I can get help (or good e-book) of python? -- http://mail.python.org/mailman/listinfo/python-list
Could not build MySQLdb on PowerMac (PPC)
Hi, I am new to Python. I am trying to build MySQLdb for my PowerPC PowerMac. I just downloaded the source last week and tried to build it. But I got the error messages as follow. I checked and there is no such files as mysql_config mysql.h my_config.h ... Did I download the wrong source? python setup.py build sh: line 1: mysql_config: command not found ...(same as above for a few lines) running build running build_py copying MySQLdb/release.py -> build/lib.macosx-10.4-fat-2.4/MySQLdb running build_ext building '_mysql' extension gcc -arch ppc -arch i386 -isysroot /Developer/SDKs/MacOSX10.4u.sdk -fno-strict-aliasing -Wno-long-double -no-cpp-precomp -mno-fused-madd -fno-common -dynamic -DNDEBUG -g -O3 -I/Library/Frameworks/Python.framework/Versions/2.4/include/python2.4 -c _mysql.c -o build/temp.macosx-10.4-fat-2.4/_mysql.o -Dversion_info="(1,2,1,'final',2)" -D__version__="1.2.1_p2" _mysql.c:39:19:_mysql.c:39:19: error: mysql.h: No such file or directory _mysql.c:40:23: error: my_config.h: No such file or directory _mysql.c:41:26: error: mysqld_error.h: No such file or directory _mysql.c:42:20: error: error: mysql.h: No such file or directory _mysql.c:40:23: error: my_config.h: No such file or directory errmsg.h: No such file or directory _mysql.c:41:26:_mysql.c:72: error: parse error before 'MYSQL' _mysql.c:72: warning: no semicolon at end of struct or union _mysql.c:75: error: parse error before '}' token _mysql.c:75: warning: data definition has no type or storage class _mysql.c:86: error: parse error before 'MYSQL_RES' Ted Zeng Adobe Systems Incorporated -- http://mail.python.org/mailman/listinfo/python-list
Re: Pythondocs.info : collaborative Python documentation project
[EMAIL PROTECTED] wrote: > Hi, > > I am a bit disapointed with the current Python online documentation. I > have read many messages of people complaining about the documentation, > it's lack of examples and the use of complicated sentences that you > need to read 10 times before understanding what it means. > > That's why I have started a collaborative project to make a user > contributed Python documentation. The wiki is online here: > http://www.pythondocs.info > > This is a fresh new website, so there's not much on it, but I hope to > make it grow quickly. Help and contributions are welcome; Please > register and start posting your own documentation on it. > > Regards, > > Nicolas. > - > http://www.pythondocs.info You're realy nor the first one, see http://mail.python.org/pipermail/python-list/2004-May/219580.html (and following thread) Other (never achieved) projects... http://www.pythondocs.org/ Even Skip Montanaro python-glossary site seem to not have been continued... http://mail.python.org/pipermail/python-list/2004-May/219682.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating database structures in a portable way
> FWIW, there's a Python port of adodb: > http://phplens.com/lens/adodb/adodb-py-docs.htm > > and parsing XML in Python is quite easy. So you could as well port the > AdoDB XML to Python too. That is exactly what I am trying to avoid. While implementing the parser might be easy, you have to translate things into different database flavors, caring about a bunch of things that I'd rather not have to think about. > OTOH, there are other - possibly better (YMMV) - DB abstraction layers > in Python, like SQLAlchemy. SQLAlchemy looks pretty good, but unfortunately apparently requires shell access for installation (or at least, I have not found any other solution covered in the docs), which I can not use. I need a solution that can be shipped in a software package, and installed by simply copying it to the server. > And since the above solution requires > (re)writing the xml-parsing part, it might be worth rewriting it so it > knows how to generate SQLAlchemy schemas instead. Rewriting the schema is possible (I only want to keep it separated from the code), so using SQLAlchemy's built in solution for generating tables seems just fine. It's only the installation part. Anyway, I am wondering; Python seems to include database adapters for almost any important database, all with a unified API. Why would you need another database abstraction on top of that? Thanks, -Samuel -- http://mail.python.org/mailman/listinfo/python-list
PyPy Sprint Announcement, Duesseldorf 30 Oct - 5 Nov
Hi all! The next PyPy sprint will be held in the Computer Science department of Heinrich-Heine Universitaet Duesseldorf from the 30th of October to the 5th of November 2006. Topics and goals The topics of the sprints are not fixed yet. We will progress on the subjects that we are currently working on, while giving a special priority to any topic that "non-core" people find interesting. There are many topics that could fit both category :-) Here are some examples: * Just-In-Time work. Two sub-topics: - write and/or optimize a machine-code backend (we have 386 only so far) - work on turning simple interpreters into JIT compilers (we cannot do this for the whole of the PyPy interpreter yet, we're getting there small step by small step). * Optimization of core Python data types, making full use of PyPy's flexible architecture and python-implemented (and then translated) type system. (We have already various dict and str implementations.) * "Next-step stuff" that will requires some thinking and design: - distribution (where a single program runs on multiple machines) - persistence (save an "image" of a running program, or a part of it) - security (in many possible senses of the word) * Working on py.test testing tool: - py.test recently grew some distribution features which are still rough around the edges and could use improvement - there are some more ideas for features of py.test around, like adding profiling capabilities (and more) * Work on the PyPy build tool: There are some plans to provide a tool that allows one to flexibly configure PyPy and to also request builds from a set of build servers. If there is interest there could be work in this area. * and as always, there is the topic of implementing or completing core extension modules (e.g. socket...). This is hacking with a mix of ctypes and RPython. Location The sprint will (probably) take place in a seminar room of the geography department (which is getting assimilated by the cs department and is below it). It is in the building 25.12 of the university campus. For travel instructions see http://stups.cs.uni-duesseldorf.de/anreise/esbahn.php Registration If you'd like to come, please subscribe to the `pypy-sprint mailing list`_ and drop a note about your interests and post any questions. More organisational information will be send to that list. We'll keep a list of `people`_ which we'll update (which you can do so yourself if you have codespeak commit rights). .. _`pypy-sprint mailing list`: http://codespeak.net/mailman/listinfo/pypy-sprint .. _`people`: http://codespeak.net/pypy/extradoc/sprintinfo/ddorf2006b/people.html Cheers, Carl Friedrich Bolz & the PyPy team -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
Carl Drinkwater wrote: > For those who haven't heard of codegolf.com, it can be described as > "allowing you to show off your code-fu by trying to solve coding > problems using the least number of keystrokes." Is having good 'code-fu' worthwhile? It may be trivial to score but do the results show who iss the better programmer? Methinks I'll pass. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help
Rrajal wrote: > Hi there, I am new in this subject so could you please tell me from > where I can get help (or good e-book) of python? You don't provide much info about where you are in your learning cycle. New to programming? New to Python? Both? If you do use the Tutorial, use the newest version: http://docs.python.org/dev/tut/tut.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Help
Matimus wrote: >> Hi there, I am new in this subject so could you please tell me from >> where I can get help (or good e-book) of python? > http://www.diveintopython.org/ That did the trick for me. It is, however, "a Python book for experienced programmers" (quoted from website). Not too tough, but if you have no clue of programming at all, maybe have a look at http://ibiblio.org/obp/thinkCS/python.php It called "How to Think Like a Computer Scientist" (the title sounds dryer than the book really is, trust me). Very good as well. -- http://mail.python.org/mailman/listinfo/python-list
Re: Could not build MySQLdb on PowerMac (PPC)
Ted Zeng schrieb: > Hi, > > I am new to Python. I am trying to build MySQLdb for my PowerPC > PowerMac. > I just downloaded the source last week and tried to build it. > But I got the error messages as follow. I checked and there is no such > files as > mysql_config > mysql.h > my_config.h > ... > > Did I download the wrong source? You need the mysql development files. You could e.g. use fink to install mysql and the development files package. On my machine it's called mysql14-dev. Diez -- http://mail.python.org/mailman/listinfo/python-list
newbie division question
Suppose x and y are ints in moduleA. If I put from __future__ import division in moduleA then x/y will produce the truediv result. If I put from __future__ import division in moduleB and from moduleB import * in module A then x/y will NOT produce the truediv result (in moduleA). Why? And is there some way to avoid importing from __future__ in module after module? Thanks, Alan Isaac -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
Paddy: > Is having good 'code-fu' worthwhile? It may be trivial to score but do > the results show who iss the better programmer? With Python you can't win, because Perl and Ruby allow for shorter programs. Beside the language, you win if you can invent more tricks, that you have to avoid in real code, because it must be very readable. The positive side of this game is that you exercise yourself, so you get to know the programming language better, and you learn all the corner cases of your language. Knowing them is useful, to avoid them when you program for real, to avoid some kind of bugs generated by corner cases. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
python and snmp
Hi all, I was just wondering if someone here had any experience with some of these implementations of the snmp protocol? pysnmp, libsnmp, snmpy. Does anybody know of another implementation? thanks in advance!!! -- miya -- http://mail.python.org/mailman/listinfo/python-list
PIL PSDraw textsize method
Running the example from the excellent PIL handbook gives an error,
after these two lines:
ps.setfont("HelveticaNarrow-Bold", 36)
w, h, b = ps.textsize(title)
AttributeError: PSDraw instance has no attribute 'textsize'
Can someone tell me what's wrong, this error occurred on my Linux and on
my Windows system.
Regards,
Bauke
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Re: newbie division question
David Isaac wrote: > Suppose x and y are ints in moduleA. > > If I put > from __future__ import division > in moduleA then x/y will produce the truediv result. > > If I put > from __future__ import division > in moduleB > and > from moduleB import * > in module A > then x/y will NOT produce the truediv result > (in moduleA). > > Why? The statement "from __future__ import division" in ModuleB influences the byte codes generated when ModuleB is compiled. It doesn't influence the byte code generated in ModuleA. > And is there some way to avoid importing > from __future__ in module after module? Start python with the "-Qnew" option. > > Thanks, > Alan Isaac casevh -- http://mail.python.org/mailman/listinfo/python-list
why a main() function?
I think I read a suggestion somewhere to wrap the code where a Python script starts in a main() function, so one has def main(): print "hi" main() instead of print "hi" What are the advantages of doing this? -- http://mail.python.org/mailman/listinfo/python-list
Cross-process dictionary/hashtable
A dictionary that can be shared across processes without being marshaled? Is there such a thing already for python? If not is there one for C maybe? I was just thinking how useful such a thing could be. It's a great way to share things between processes. For example I use a cache that subclasses a dictionary. It would be trivial to modify it to work across processes by changing the base class and the locking mechanism. Thanks, -Sandra -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Paddy: >> Is having good 'code-fu' worthwhile? It may be trivial to score but do >> the results show who iss the better programmer? > > With Python you can't win, because Perl and Ruby allow for shorter > programs. > Beside the language, you win if you can invent more tricks, that you > have to avoid in real code, because it must be very readable. > The positive side of this game is that you exercise yourself, so you > get to know the programming language better, and you learn all the > corner cases of your language. Knowing them is useful, to avoid them > when you program for real, to avoid some kind of bugs generated by > corner cases. > > Bye, > bearophile > Success lies in the journey, not the destination. or in Yoda-speak: In the journey success lies, in the destination not. -- Paul -- http://mail.python.org/mailman/listinfo/python-list
Threads blocking on OpenBSD w/ Python 2.4.2
I'm attempting to write a faily simple threaded app that fires off a
thread to select() on a FIFO while the main loop handles data read from
that pipe and a few other tasks. For some reason, calls to
time.sleep() seem to block until the first time data is dumped into the
pipe. Clearly, I could work around this quite easily by "priming the
pipe" as it were with a bit of garbage data. However, I'd rather
understand the problem.
Here's a code snippet:
===
ipList = []
def readPipe(pipeName):
p = file(pipeName, 'r')
while True:
x = select.select([p.fileno()], [], [])
dataLine = p.readline()
ipList.append(dataLine)
def main():
if not os.path.exists('bob'):
os.mkfifo('bob')
print "FIFO created."
print "Starting thread."
thread.start_new_thread(readPipe, ('bob',))
print "Thread started."
while True:
print time.time()
time.sleep(1)
===
On Linux and OS X, this behaves as expected. Running the code
immediately produces output like this:
tarja:~ ben$ ./mycapd
Starting thread.
Thread started.
1158608481.67 []
1158608482.67 []
1158608483.67 []
...
But on OpenBSD I get this:
[ [EMAIL PROTECTED] ] $ ./mycapd
Starting thread.
Thread started.
1158608528.5 []
And there it hangs until I dump some data into the fifo. Then it runs
as expected, dumping out a timestamp every second.
So the question is this: Am I doing something wrong or is there a
problem on OpenBSD?
-Ben
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Re: why a main() function?
[EMAIL PROTECTED] wrote: > I think I read a suggestion somewhere to wrap the code where a Python > script starts in a main() function, so one has > > def main(): > print "hi" > > main() > > instead of > > print "hi" > > What are the advantages of doing this? I'm sure there are other reasons, but for me the most important is that you can import your code into the interpreter and poke at it from there without executing the script. Also, of course, you can re-use your code as a module in another program. -Ben -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie division question
> Alan Isaac wrote: > > Suppose x and y are ints in moduleA. > > > > If I put > > from __future__ import division > > in moduleA then x/y will produce the truediv result. > > > > If I put > > from __future__ import division > > in moduleB > > and > > from moduleB import * > > in module A > > then x/y will NOT produce the truediv result > > (in moduleA). <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > The statement "from __future__ import division" in ModuleB influences > the byte codes generated when ModuleB is compiled. It doesn't influence > the byte code generated in ModuleA. > Start python with the "-Qnew" option. That is pretty good, but it affects every module I use, not just my (selected) modules. Thanks, Alan PS Any news on when true division will be the default? -- http://mail.python.org/mailman/listinfo/python-list
Re: Cross-process dictionary/hashtable
"Sandra-24" <[EMAIL PROTECTED]> writes: > A dictionary that can be shared across processes without being > marshaled? > > Is there such a thing already for python? Check this out: http://poshmodule.sourceforge.net/ -- HTH, Rob -- http://mail.python.org/mailman/listinfo/python-list
Re: Cross-process dictionary/hashtable
On 18 Sep 2006 12:44:32 -0700, Sandra-24 <[EMAIL PROTECTED]> wrote: > A dictionary that can be shared across processes without being > marshaled? > > Is there such a thing already for python? > > If not is there one for C maybe? > > I was just thinking how useful such a thing could be. It's a great way > to share things between processes. For example I use a cache that > subclasses a dictionary. It would be trivial to modify it to work > across processes by changing the base class and the locking mechanism. > > Thanks, > -Sandra Maybe what you want is something like memcache (http://cheeseshop.python.org/pypi/memcached), which offers a basic in-memory, key-value share that processes (even on different boxes) can connect to. Of course, as with any kind of concurrent work, its going to be far easier to have some restrictions, which memcache has. For example, full python objects being shared isn't a great idea, or even possible in many situations. The closest you could get with something like memcache is to wrap it up in a dictionary-like object and have it pickle things coming in and out, but that won't work for everying and has security concerns. -- http://mail.python.org/mailman/listinfo/python-list
Re: why a main() function?
On 18 Sep 2006 12:40:00 -0700, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > I think I read a suggestion somewhere to wrap the code where a Python > script starts in a main() function, so one has > > def main(): > print "hi" > > main() > > instead of > > print "hi" > > What are the advantages of doing this? It is useful both importating scripts without running them, for debugging or reusing parts of them later, and also for adding small test scripts to modules to allow them to be run for testing purposes. -- http://mail.python.org/mailman/listinfo/python-list
Re: why a main() function?
[EMAIL PROTECTED] wrote: > I think I read a suggestion somewhere to wrap the code where a Python > script starts in a main() function, so one has > > def main(): > print "hi" > > main() > > instead of > > print "hi" > > What are the advantages of doing this? Refine this to: def main(): print "hi" if __name__ == "__main__": main() The advantage of the 'if __name__ ..' statement is that you can import the script without running the 'main' code, e.g. from your unittest module. Wrapping the main code in a function allows you to call this function from your unittests and test it like any other function. Additionally I do usually add an 'argv' argument to main() which I use instead of sys.argv, so I can easily test it with different arguments. -- Benjamin Niemann Email: pink at odahoda dot de WWW: http://pink.odahoda.de/ -- http://mail.python.org/mailman/listinfo/python-list
How to find number of characters in a unicode string?
Hi If I use len() on a string containing unicode letters I get the number of bytes the string uses. This means that len() can report size 6 when the unicode string only contains 3 characters (that one would write by hand or see on the screen). Is there a way to calculate in characters and not in bytes to represent the characters. The reason for asking is that PyGTK needs number of characters to set the width of Entry widgets to a certain length, and it expects viewable characters and not number of bytes to represent them. Thanks in advance Preben -- http://mail.python.org/mailman/listinfo/python-list
Re: How to find number of characters in a unicode string?
In <[EMAIL PROTECTED]>, Preben Randhol wrote: > If I use len() on a string containing unicode letters I get the number > of bytes the string uses. This means that len() can report size 6 when > the unicode string only contains 3 characters (that one would write by > hand or see on the screen). Is there a way to calculate in characters > and not in bytes to represent the characters. Yes and you already seem to know the answer: Decode the byte string and use `len()` on the unicode string. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: How to find number of characters in a unicode string?
are you sure you're using unicode objects? len(u'\u') == 1 the encodings module should help you turn '\xff\xff' into u'\u'. Preben Randhol wrote: > Hi > > If I use len() on a string containing unicode letters I get the number > of bytes the string uses. This means that len() can report size 6 when > the unicode string only contains 3 characters (that one would write by > hand or see on the screen). Is there a way to calculate in characters > and not in bytes to represent the characters. > > The reason for asking is that PyGTK needs number of characters to set > the width of Entry widgets to a certain length, and it expects viewable > characters and not number of bytes to represent them. > > > Thanks in advance > > > Preben -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie division question
> PS Any news on when true division will be the default? Python 3.0 (aka P3K). It is the release that can break backwards compatibility. http://www.python.org/dev/peps/pep-3000/ casevh -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie division question
<[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > >> PS Any news on when true division will be the default? > > Python 3.0 (aka P3K). It is the release that can break backwards > compatibility. > > http://www.python.org/dev/peps/pep-3000/ > > casevh > Yes, Break Backwards Compatibility is a Level 60 spell, reserved for Night Elf mages. -- Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: why a main() function?
[EMAIL PROTECTED] wrote: > I think I read a suggestion somewhere to wrap the code where a Python > script starts in a main() function, so one has > > def main(): > print "hi" > > main() > > instead of > > print "hi" > > What are the advantages of doing this? > Guido van Rossum himself can tell you: http://www.artima.com/forums/flat.jsp?forum=106&thread=4829 regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
Paul McGuire wrote: > Success lies in the journey, not the destination. > > or in Yoda-speak: > > In the journey success lies, in the destination not. > > -- Paul Ah, I always wondered what lemmings thought , before splat!!! :-) - Pad. -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie division question
In <[EMAIL PROTECTED]>, Paul McGuire wrote: > <[EMAIL PROTECTED]> wrote in message > news:[EMAIL PROTECTED] >> >>> PS Any news on when true division will be the default? >> >> Python 3.0 (aka P3K). It is the release that can break backwards >> compatibility. >> >> http://www.python.org/dev/peps/pep-3000/ >> >> casevh >> > > Yes, Break Backwards Compatibility is a Level 60 spell, reserved for Night > Elf mages. But new keywords certainly can make it into 2.x releases. Only Level 10 spells? :-) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: why a main() function?
Others have already told you the most important things. There is another secondary advantage: the code inside a function runs faster (something related is true for C programs too). Usually this isn't important, but for certain programs they can go 20%+ faster. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: Creating database structures in a portable way
Samuel a écrit : >>FWIW, there's a Python port of adodb: >>http://phplens.com/lens/adodb/adodb-py-docs.htm >> >>and parsing XML in Python is quite easy. So you could as well port the >>AdoDB XML to Python too. > > > That is exactly what I am trying to avoid. While implementing the > parser might be easy, you have to translate things into different > database flavors, caring about a bunch of things that I'd rather not > have to think about. This I can understand pretty well - hence my suggestion of using SQLAlchemy instead. > >>OTOH, there are other - possibly better (YMMV) - DB abstraction layers >>in Python, like SQLAlchemy. > > > SQLAlchemy looks pretty good, but unfortunately apparently requires > shell access for installation (or at least, I have not found any other > solution covered in the docs), which I can not use. I need a solution > that can be shipped in a software package, and installed by simply > copying it to the server. It doesn't use binaries AFAIK, so just copying should work as well. > >>And since the above solution requires >>(re)writing the xml-parsing part, it might be worth rewriting it so it >>knows how to generate SQLAlchemy schemas instead. > > Rewriting the schema is possible (I only want to keep it separated from > the code), Why ? Isn't your code supposed to use it ? > so using SQLAlchemy's built in solution for generating > tables seems just fine. It's only the installation part. cf above. > Anyway, I am wondering; Python seems to include database adapters for > almost any important database, all with a unified API. Why would you > need another database abstraction on top of that? A first point is that the DB-API doesn't hide the differences between various SQL dialects. A second point is that DB-API requires you to embed SQL statements as strings, while SQLAlchemy allow you to build your SQL queries in pure Python. (and FWIW, if using an existing DB, you don't even have to describe the schema a second time to use it). Well, just start playing with it, and I really doubt you'll want to come back to the embedded hand-written SQL !-) My 2 cents -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
[EMAIL PROTECTED] writes: > With Python you can't win, because Perl and Ruby allow for shorter > programs. Python has native bignums, which should simplify a program like this enormously. I don't know if Ruby has them. Perl doesn't, and if you use some CPAN library that simulates them, that should count as part of your program size. -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
Paul Rubin wrote: > [EMAIL PROTECTED] writes: > > With Python you can't win, because Perl and Ruby allow for shorter > > programs. > > Python has native bignums, which should simplify a program like this > enormously. I don't know if Ruby has them. Perl doesn't, and if you > use some CPAN library that simulates them, that should count as part > of your program size. Unfortunately: $ perl -Mbignum -e 'print 1234567890123456789012345678901234567890,"\n"' 1234567890123456789012345678901234567890 HP [EMAIL PROTECTED] /cygdrive/c/Documents and Settings/All Users/Documents/Python tutorial $ perl -v This is perl, v5.8.7 built for cygwin-thread-multi-64int (with 1 registered patch, see perl -V for more detail) Yep my standard Cygwin perl installation for windows includes the bignum package. - Paddy. -- http://mail.python.org/mailman/listinfo/python-list
Which date will it be 'over x days'?
I must be overlooking something since I can't find a simple way to calculate which date it will be over, say, 9 days. I checked the datetime, time and calendar modules, but none of them seem to have a function to calculate the time offset. -- http://mail.python.org/mailman/listinfo/python-list
Re: [ANN] Code Golf Challenge : 1,000 Digits Of Pi
On 9/18/06, Carl Drinkwater <[EMAIL PROTECTED]> wrote: > Hi all, > > Code Golf's 12th challenge has just been added to the site. It asks you > to calculate the first 1,000 digits of Pi - Something I'm sure most of > you have thought about, but never done. You can see the challenge at : > >http://codegolf.com/1000-digits-of-pi > > For those who haven't heard of codegolf.com, it can be described as > "allowing you to show off your code-fu by trying to solve coding > problems using the least number of keystrokes." > > The site currently supports Perl, PHP, Python and Ruby with Scheme to > (hopefully) follow soon. Your entries are automatically executed and > scored - No need to wait for someone to validate your code. > > Other challenges include implementing the Vigenere Cipher, Prime > factors, SHA-256 Hashing as well as the obvious 99 Bottles Of Beer. All > of the challenges are competitive but there is still scope to well in > them, even if you're new to the site. > > I hope some of you will find this interesting, and sorry for disturbing > you if not! > > Have fun, > Carl. Just once, I would like to see a programming contest that was judged on the quality of your code, not the number of bytes you managed to incomprehensively hack it down to. -- http://mail.python.org/mailman/listinfo/python-list
Re: Cheese Shop Registration error
[EMAIL PROTECTED] wrote: > The Key ID that the kgpg shows. I tried to paste the key returned by > the quiery on the keyserver. but it also doesn't work. I tried > everything that has any connection with the key, but everything fails. > > By the way the key is: 6A61E3AD Here is the code that could generate that error message: if len(gpgid) != 8: raise FormError, 'GPG key ID is invalid' try: int(gpgid) except ValueError: raise FormError, 'GPG key ID is invalid' So I suspect there might have been some cut-n-paste error. Check that you've not pasted in any whitespace that could confuse the first test. Richard -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with operator overloading and inheritance in Python
On 9/18/06, Edward Waugh <[EMAIL PROTECTED]> wrote: > I quickly glanced at Guido's paper of new-style classes and I am puzzled > because the definition of a new-style class looks exactly the same as that > for the classic classes: class []: the class>. > > How do I define new-style classes? > > - Edward > > > Original Message Follows > From: "Calvin Spealman" <[EMAIL PROTECTED]> > Reply-To: [EMAIL PROTECTED] > To: "Edward Waugh" <[EMAIL PROTECTED]> > Subject: Re: Problem with operator overloading and inheritance in Python > Date: Mon, 18 Sep 2006 17:06:53 -0400 > > On 9/18/06, Edward Waugh <[EMAIL PROTECTED]> wrote: > >Tried this and it didn't work: > > > >C:\Files\Python> problem.py > >Traceback (most recent call last): > > File "C:\Files\Python\problem.py", line 21, in ? > > x += 1 > > File "C:\Files\Python\problem.py", line 7, in __add__ > > return type(self)(self.data + value) > >TypeError: instance() argument 1 must be classobj, not int > > > >But then in a moment of inspiration I tried self.__class__(self.data + > >value) and it worked: > > Sorry, I neglected to consider that you might be using old-style > classes! For any old-style class, type(someInstance) is always the > instance type, where as new-style classes actually give yuou the class > itself! So either you need to do what you have done now or learn about > and move to new-style classes. Usually you can just inherit your base > classes from object and you wont have any trouble. They are syntactically the same, but the difference is in some subtle behaviors related to some lookup rules in various situations, like the dropping of the instance type. By inheriting from object, the base new-style class, you cause your class to become a new-style class. This should all have been covered in anything you read. # Old-Style class foo: pass # New-Style class foo(object): pass -- http://mail.python.org/mailman/listinfo/python-list
Zenoss Version 0.22.3 Available
09-18-2006 Announcing Zenoss Version 0.22.3 All, Version 0.22.3 of Zenoss is available for download. Version 0.22.3 is a dot release of version 0.22.0, which added several new features, including: * Support for Nagios Plugins (zenagios) * Addition of a GUI for the selection of Alerting Rules * Adds Email alerts with configurable body text * Automated maintenance windows * Allows the assignment of users to the systems they manage Zenoss Version 0.22.3 provides several minor bug fixes and enhancements, including: * Use of latin-1 encoding when calling xml-rpc * Improved handling of Unicode items * Repaired bad zenagios heartbeat timeout * Corrected zenagios unpack of config (component and eventKey were backward) * Take off newline when reading configfile values * Fixed additional date-time zone problems Download Links: * Source: http://www.zenoss.org/download/latest/src * Zenwin: http://www.zenoss.org/download/latest/zenwin * Documentation: http://www.zenoss.org/download/latest/docs * Release Notes: http://www.zenoss.org/download/latest/relnotes Project Blurb: Zenoss is Python-based, network/systems monitoring application that offers a single integrated package for end to end monitoring (discovery, configuration, availability, performance, events, alerts) of resources across the stack (servers, applications, networks, environment, etc...). Zenoss was recognized as one of the "Top 10 Open Source Projects to Watch" by Network World in August of 2006. (http://www.zenoss.org/ about/news_items/articles/nw-10towatch) Zenoss is currently hiring talented Zope & Python developers. Join the team! http://www.zenoss.org/jobs. Enjoy, Drew Project Zenoss [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Which date will it be 'over x days'?
cyberco wrote: > I must be overlooking something since I can't find a simple way to > calculate which date it will be over, say, 9 days. I checked the > datetime, time and calendar modules, but none of them seem to have a > function to calculate the time offset. I suppose that it depends on your thresholds for "simple" and "seem" but datetime.timedelta() does it for me: | >>> import datetime | >>> datetime.date.today() | datetime.date(2006, 9, 19) | >>> datetime.date.today() + datetime.timedelta(days=9) | datetime.date(2006, 9, 28) | >>> http://docs.python.org/lib/datetime-timedelta.html HTH, John -- http://mail.python.org/mailman/listinfo/python-list
gnome module
Am I correct in assuming that I can use the gnome module to minimize all windows (aka show desktop)? If so, how? -- http://mail.python.org/mailman/listinfo/python-list
Re: Cheese Shop Registration error
Richard Jones wrote:
> [EMAIL PROTECTED] wrote:
> > The Key ID that the kgpg shows. I tried to paste the key returned by
> > the quiery on the keyserver. but it also doesn't work. I tried
> > everything that has any connection with the key, but everything fails.
> >
> > By the way the key is: 6A61E3AD
>
> Here is the code that could generate that error message:
>
> if len(gpgid) != 8:
> raise FormError, 'GPG key ID is invalid'
> try:
> int(gpgid)
| >>> int("6A61E3AD")
Traceback (most recent call last):
File "", line 1, in ?
ValueError: invalid literal for int(): 6A61E3AD
| >>> int("6A61E3AD", 16)
1784800173
What am I missing?
> except ValueError:
> raise FormError, 'GPG key ID is invalid'
>
> So I suspect there might have been some cut-n-paste error. Check that you've
> not pasted in any whitespace that could confuse the first test.
>
Cheers,
John
--
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How to efficiently proceed addition and subtraction in python list?
Hello all: I have a list AAA = [1, 2, 3] and would like to subtract one from list AAA so AAA' = [0, 1, 2] What should I do? Thank you -Daniel -- http://mail.python.org/mailman/listinfo/python-list
Re: How to efficiently proceed addition and subtraction in python list?
> I have a list AAA = [1, 2, 3] and would like to subtract one from list > AAA > so AAA' = [0, 1, 2] > > What should I do? Sounds like a list comprehension to me: >>> a = [1,2,3] >>> a_prime = [x-1 for x in a] >>> a_prime [0, 1, 2] -tkc -- http://mail.python.org/mailman/listinfo/python-list
Message dialog on 'focus-out-event'
import pygtk, gtk, gobject, ...
class MyEntry(gtk.Entry):
def __init__(self, is_OK):
gtk.Entry.__init__(self)
self.is_OK=is_OK
self.add_events(gtk.gdk.FOCUS_CHANGE)
self.focus_out_id=self.connect('focus-out-event',
self.on_focus_out)
def on_focus_out(self, sender, event):
if self.is_OK(self.get_text()): return False
else:
# don't want another focus-out-event because of show_message
self.disconnect(self.focus_out_id)
# self.grab_focus()
show_message("Wrong value for entry")
self.focus_out_id=self.connect('focus-out-event',
self.on_focus_out)
return False
# Leaving focus in not_OK case results:
# GtkWarning: GtkEntry - did not receive focus-out-event.
# If you connect a handler to this signal, it must return
# FALSE so the entry gets the event as well
# The required False is given, but may be the messagebox
# times it out.
# My second trial was to include self.grab_focus() before
# show_message, but it gives focus to the toplevel
# gtk.gdk.Window and I lose access to the entry.
# Any suggestions?
# Tuomas Vesterinen
--
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Re: Help me use my Dual Core CPU!
Paul Rubin wrote:
> "Ramon Diaz-Uriarte" <[EMAIL PROTECTED]> writes:
> > You might also want to check
> > http://www.lindaspaces.com/products/NWS_overview.html
> > by the guys who "invented" Linda.
>
> Cool, I guess.
>
> > (The Oz language/Mozart system is a good example of a different and
> > very neat approach to concurrency; somewhat similar Python solutions
> > can be found at Kamaelia and Candygram. Links and other stuff at:
>
> I looked at these. Oz/Mozart is a whole nother language, worth
> examining for its ideas, but the implementation is quite slow.
> Kamaelia doesn't attempt concurrency at all. Its main idea is to use
> generators to simulate microthreads.
Regarding Kamaelia, that's not been the case for over a year now.
We've had threaded components as well as generator based ones since
around last July, however their API stablised properly about 4 months
back. If you use C extensions that release the GIL and are using an OS
that puts threads on different CPUs then you have genuine concurrency.
(those are albeit some big caveats, but not uncommon ones in python).
Also integrating things as a sub process is as simple instantiating a
component that talks to the subprocess over stdin/out to the
inbox/outbox model of Kamaelia and then just using it. Something
concrete this is useful for:
mencoder_options = "-ovc lavc -oac mp3lame -ffourcc DX50 -lavcopts
acodec=mp3:vbitrate=200:abitrate=128 -vf scale=320:-2 -"
...# assume 'encodingfile' is defined above
Pipeline( DVB_TuneToChannel(channel="BBC ONE",fromDemuxer="MUX1"),
UnixProcess("mencoder -o "+encodingfile+"
"+mencoder_options)
).run()
On a dual CPU machine that code does indeed both use CPUs (as you'd
want and expect).
Also whilst we haven't had the chance to implement OS level process
based components, that doesn't mean to say we're not interested in
them, it's just that 2 people have to focus on something so we've been
focussed on building things using the system rather than fleshing out
the concurrently. To say we don't attempt implies that we don't want to
go down these routes of adding in genuine concurrency. (Which is really
why I'm replying - that's not the case - I do want to go down these
routes, and it's more man-hours than desire that are the issue).
Personally, I'm very much in the camp that says "shared data is
invariably a bad idea unless you really know what you're doing"
(largely because it's the most common source of bugs for people where
they're trying to do more than one thing at a time). People also
generally appear to find writing threadsafe code very hard. (not
everyone, just the people who aren't at the top end of the bell curve
for writing code that does more than one thing at a time)
This is why Kamaelia is message based (ie it's a concious choice in
favour), except for certain types of data (where we have a linda-esque
type system for more systemic information). The reason for this is to
help the average programmer from shooting himself in his own foot (with
a 6 CPU-barrelled shotgun :-).
In terms of how this is *implemented* however, we have zero copying of
data (except to/from threads at the moment) and so data is shared
directly, but in a location the user of the system thinks its natural
to have handoff to someone else. This approach we find tends to
encourage arbitration of access to shared resources, which IMO is a
good (defensive) approach to avoiding the problems people have with
shared resources.
But if it turns out our approach sucks for the average programmer, then
that's a bug, so we'd have to work to fix it. And if new approaches are
better, we'd welcome implementations since not all problems are screws
and not all tools are hammers :-) (as a result I'd also welcome people
saying what sucks and why, but preferably based on the system as it is
today, not as it was :)
Have fun :)
Michael.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Cross-process dictionary/hashtable
I looked at posh, and read the report on it, it's very interesting, but it will not work for me. Posh requires that it forks the processes, but in mod_python the processes were forked by apache and use different interpreters. Calvin Spealman wrote: > Maybe what you want is something like memcache > (http://cheeseshop.python.org/pypi/memcached), which offers a basic > in-memory, key-value share that processes (even on different boxes) > can connect to. Of course, as with any kind of concurrent work, its > going to be far easier to have some restrictions, which memcache has. > For example, full python objects being shared isn't a great idea, or > even possible in many situations. The closest you could get with > something like memcache is to wrap it up in a dictionary-like object > and have it pickle things coming in and out, but that won't work for > everying and has security concerns. Memcached looks like it will do the job. Thanks! -Sandra -- http://mail.python.org/mailman/listinfo/python-list
Re: Code Golf Challenge : 1,000 Digits Of Pi
Calvin Spealman wrote: > Just once, I would like to see a programming contest that was judged > on the quality of your code, not the number of bytes you managed to > incomprehensively hack it down to. Unfortunately, quality is not as easy to judge as number of bytes. Such contest would be as crazy an idea as a beauty contest! Oh, wait... -- http://mail.python.org/mailman/listinfo/python-list
Read a group of files as a list
Hi!! I'm a beginner in python and I'm trying to use the files from a "folder" as a list. What I want to do is read each one as a list, but just the name of the file, the data inside doesn't matter. How can I do it? I was trying using a list, but I don't know how "convert" the elements (files) to a list that I can read and manipulate... Thanks in advance for your help!! Citlaly -- http://mail.python.org/mailman/listinfo/python-list
Read a group of files as a list
Hi!! I'm a beginner in python and I'm trying to use the files from a "folder" as a list. What I want to do is read each one as a list, but just the name of the file, the data inside doesn't matter. How can I do it? I was trying using a list, but I don't know how "convert" the elements (files) to a list that I can read and manipulate... Thanks in advance for your help!! Citlaly -- http://mail.python.org/mailman/listinfo/python-list
