ANN: PyDev 0.9.7 with support to java 1.3 and 1.4 released
Hi All, PyDev - Python IDE (Python Development Enviroment for Eclipse) version 0.9.7 with support to java 1.3 and 1.4 has just been released. Check the homepage (http://pydev.sourceforge.net/) for more details. IMPORTANT: - A new package has been added to the pydev release with support to earlier java versions (latest release just supports java 5.0). - This package is targeted specifically for people that don't have access to java 5.0 (namely, earlier versions of MAC OS). - Support for this release is limited to the .zip distribution in the sourcforge downloads, and will not be put into the update site. Release Highlights: This build fixes some nasty bugs from 0.9.6... it is highly recommended you install it. (right now, everything but the debugger should work fine with 3.1). Important notes Note 1: Because of some issues with Eclipse, you have to uninstall all previous PyDev installations before installing the new release. Note 2: This release only works with Eclipse 3.1 (and from now on, Eclipse 3.0.x is no longer supported). Regards, Fabio -- Fabio Zadrozny -- Software Developer ESSS - Engineering Simulation and Scientific Software www.esss.com.br PyDev - Python Development Enviroment for Eclipse pydev.sf.net pydev.blogspot.com -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ANN: Kamaelia 0.2.0 has been released!
Kamaelia 0.2.0 has been released! What is it? === Kamaelia is a collection of Axon components designed for network protocol experimentation in a single threaded, select based environment. Axon components are python generators are augmented by inbox and outbox queues (lists) for communication in a communicating sequential processes (CSP) like fashion. The architecture is specifically designed to try and simplify the process of designing and experimenting with new network protocols in real environments. More background on the motivations behind Kamaelia can be found here: http://kamaelia.sourceforge.net/Challenges/ The focus of this release adds in support for introspection, pygame based interfaces, 4 new examples using these, visualisation tools, as well as syntactic sugar to make building Kamaelia systems simpler. (Specifically Graphline and pipeline systems. This build upon the existing base allowing TCP and Multicast based client/server systems. Other additions and changes include updated examples, variety of bugfixes in existing components (some pre-emptively discovered by introspection), and a variety of utility components. It is now also possible to write components using threading as the concurrency model rather than generators - allowing integration with thread/blocking only based systems. The system is known to work under Linux, Mac OS X, Windows and a subset has been tested on Series 60 mobiles. General feedback is welcome either directly, mailing lists or via the project weblog which is here: * http://kamaelia.sourceforge.net/cgi-bin/blog/blog.cgi What's new in version 0.2.0 ? = Lots! Full release notes can be found here: * http://kamaelia.sourceforge.net/Kamaelia-0.2.0-ReleaseNotes.html Editted highlights... Debian Packages! Many thanks are due to Gintautas Miliauskas, Programmers of Vilnius, for assistance in building Debian packages. (The current packages are based on his, and any errors are likely to be mine, not his) These have been tested successfully on Ubuntu 5.04. 4 new examples have been added showing of various new subsystem: * Example 5 : This creates a simple streaming system, and looks inside to see what components are running/active, and passes the resulting information an Axon Visualiser. * Example 6 : This is a simple/generic topology visualisation server. Accepts the following commands over the network ADD NODE id label auto - ADD LINK id id DEL NODE id DEL ALL As this stands this is pretty useful, but that's pretty much everything it does like this. * Example 7 : This shows how the visualisation subsystem can be extended to work in different ways. What this does by default when run is randomly create new nodes and new linkages quite quickly, allowing you to see how the system works. * Example 8 : Sample slideshow/presentation tool. Unlike traditional slideshow/presentation tools, you can modify this to run arbitrary components. An example of how this can work is provided - allowing stepping through some graph visualisations along with the presentation. A Tools directoy has been added with the following tools: * Axon Shell. (Requires IPython) Implements a simple command line shell which allows experimentation with Axon systems - the shell runs a scheduler as a background thread. For a tutorial of use, see: * http://kamaelia.sourceforge.net/AxonShell.html * Axon Visualiser. Implements a simple tool for looking inside (quite literally) running Axon/Kamaelia systems. This allows a very different style of debugging and can be extremely useful. Tutorial on its way! Graphlines and Pipelines These are probably the most useful additions to Kamaelia since 0.1.2. They are essentially syntactic sugar for building and working with systems of components, but make building interesting systems rapidly out of pre-existing components fun and easy. The pipelines follow the same sort of model as the Unix pipeline. Graphlines are something new, and like pipelines and all linkages may take any data along them. Please take a look at the release notes for a graphline example. A couple of simple pipelines looks like this: pipeline( ReadFileAdaptor(file_to_stream, readmode=bitrate, bitrate=40, chunkrate=50), blockise(), # Ensure chunks small enough for multicasting! Multicast_transceiver(0.0.0.0, 0, 224.168.2.9, 1600), ).activate() pipeline( Multicast_transceiver(0.0.0.0, 1600, 224.168.2.9, 0), detuple(1), VorbisDecode(), AOAudioPlaybackAdaptor(), ).run() A selection of other subsystems have been added - targeted at visualisation of Kamaelia (and other graph structured) systems using pygame. The layout mechanism is a simple physics engine. Key packages of note added: Kamaelia.UI, Kamaelia.UI.Pygame,
ANN: HarvestMan 1.4.5 beta 1
HarvestMan 1.4.5 beta 1 follows right at the heels of HarvestMan 1.4.5 alpha 2 which was released on July 21 2005. The new version adds a lot of improvements on the command line options. There is a wget like option which allows the user to just download files without trying to crawl the website. The entire command line is rewritten for ease of use and clarity. Support for server-side dynamic web page extensions '.shtm', '.aspx', '.cfm','.cfml','.cms' were added. Apart from there there are a few minor bug fixes. The harvestman web site http://harvestman.freezope.org is not reachable since the hosting provider, freezope seems to be down since yesterday. However you can download the package and see the Changelogs at http://developer.berlios.de . Package: http://download.berlios.de/harvestman/HarvestMan-1.4.5-b1.tar.bz2 . Release information Changelog: http://developer.berlios.de/project/shownotes.php?release_id=6732 . The release announcement is also available at freshmeat. http://freshmeat.net/releases/203127/ Thanks -Anand -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
ANN: matplotlib 0.83.2
matplotlib is a 2D plotting package for python. This is a summary of recent developments in matplotlib since 0.80. For detailed notes, see http://matplotlib.sf.net/whats_new.html, http://matplotlib.sf.net/CHANGELOG and http://matplotlib.sf.net/API_CHANGES == Whats New == matplotlib wiki: this was just launched a few days ago and only has two entries to date, but we hope this will grow into a useful site with tutorials, howtos, installation notes, recipes, etc. Please contribute! Thanks to scipy.org and Enthought for hosting. http://www.scipy.org/wikis/topical_software/MatplotlibCookbook CocoaAgg: New CocoaAgg backend for native GUI on OSX, 10.3 and 10.4 compliant, contributed by Charles Moad. TeX support : Now you can (optionally) use TeX to handle all of the text elements in your figure with the rc param text.usetex in the antigrain and postscript backends; see http://www.scipy.org/wikis/topical_software/UsingTex. Thanks to Darren Dale for hard work on the TeX support. Reorganized config files: Made HOME/.matplotlib the new config dir where the matplotlibrc file, the ttf.cache, and the tex.cache live. Your .matplotlibrc file, if you have one, should be renamed to .matplotlib/matplotlibrc. Masked arrays: Support for masked arrays in line plots, pcolor and contours. Thanks Eric Firing and Jeffrey Whitaker. New image resize options interpolation options. See help(imshow) for details, particularly the interpolation, filternorm and filterrad kwargs. New values for the interp kwarg are: 'nearest', 'bilinear', 'bicubic', 'spline16', 'spline36', 'hanning', 'hamming', 'hermite', 'kaiser', 'quadric', 'catrom', 'gaussian', 'bessel', 'mitchell', 'sinc', 'lanczos', 'blackman' Byte images: Much faster imaeg loading for MxNx4 or MxNx3 UInt8 images, which bypasses the memory and CPU intensive integer/floating point conversions. Thanks Nicolas Girard. Fast markers on win32: The marker cache optimization is finally available for win32, after an agg bug was found and fixed (thanks Maxim!). Line marker plots should be considerably faster now on win32. Qt in ipython/pylab: You can now use qt in ipython pylab mode. Thanks Fernando Perez and the Orsay team! Agg wrapper proper: Started work on a proper agg wrapper to expose more general agg functionality in mpl. See examples/agg_test.py. Lots of wrapping remains to be done. Subplot configuration: There is a new toolbar button on GTK*, WX* and TkAgg to launch the subplot configuration tool. GUI neutral widgets: Matplotlib now has cross-GUI widgets (buttons, check buttons, radio buttons and sliders). See examples/widgets/*.py and http://matplotlib.sf.net/screenshots.html#slider_demo. This makes it easier to create interactive figures that run across backends. Full screen mode in GTK*: Use 'f' to toggle full screen mode in the GTK backends. Thanks Steve Chaplin. Downloads available from http://matplotlib.sf.net -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Script for generating WSDL
hello, I am trying to write a python code which reads a web service and creates its corresponding wsdl file. Any idea how to do it.Please help Thanks Pranav __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this Pythonic?
On Mon, 01 Aug 2005 22:01:06 +0200, Caleb Hattingh [EMAIL PROTECTED] wrote: Peter To my mind, this kind of setup (interface class, or abstact class) is more usually used in static languages to benefit polymorphism - but python is dynamically typed, so in which situations would this setup be useful in a python program? You see, I expected your post to say that it wouldn't even be necessary, but you didn't :) I realise it's not necessary. I just thought it would be nice to document the interfaces my concrete classes will be using. I have spent a little effort training myself not to bother setting up class hierarchies like this in python, due to the fact that I use Delphi a lot at work (I do pretty much the code below to let myself know when an inherited/abstract class method is being called in error). I started doing OO stuff with Smalltalk, where it isn't necessary, then moved to C++, where it is, and liked it. -- Email: zen19725 at zen dot co dot uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this Pythonic?
On Mon, 01 Aug 2005 14:07:46 -0700, Erik Max Francis [EMAIL PROTECTED] wrote: Yes, but raise NotImplementedError instead of Exception. Another trick you can use is to prevent people from instantiating the abstract class: class Foo: def __init__(self): if self.__class__ is Foo: raise NotImplementedError ... def bar(self): raise NotImplementedError That's a clever trick, but it's obvious from the code that the class is intended to be abstract, so if people are stupid enough to shoot themselves in the foot by creating an instance, I don't feel like adding extra code to protect themselves from their stupidity. -- Email: zen19725 at zen dot co dot uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this Pythonic?
phil hunt wrote: That's a clever trick, but it's obvious from the code that the class is intended to be abstract, so if people are stupid enough to shoot themselves in the foot by creating an instance, I don't feel like adding extra code to protect themselves from their stupidity. Right. But even if you're not worried about stupidity, it's useful to have it fail in an explicit way as early as possible, rather than later on. With that addition, the moment you try to create an instance of an abstract class, you get an exception. Even if it's just a typo, and not severe negligence, that helps the problem get fixed sooner, rather than later. -- Erik Max Francis [EMAIL PROTECTED] http://www.alcyone.com/max/ San Jose, CA, USA 37 20 N 121 53 W AIM erikmaxfrancis Morality is a weakness of the mind. -- Arthur Rimbaud -- http://mail.python.org/mailman/listinfo/python-list
Re: doctest bug with nested triple quotes
Michele Simionato wrote: I am getting trouble with nested triple quoted strings in doctest. For instance $ cat x.py dummy = ''' something here ''' import doctest; doctest.testmod() $ python x.py ** File x.py, line 2, in __main__ Failed example: dummy = ''' Exception raised: Traceback (most recent call last): File /usr/lib/python2.4/doctest.py, line 1243, in __run compileflags, 1) in test.globs File doctest __main__[0], line 1 dummy = ''' ^ SyntaxError: EOF while scanning triple-quoted string ** Is this a know bug? Any workaround? Thanks for comments, I think it is your bug. All lines but the first must be prefixed with sys.PS2. Just add some dots to make it work: ''' dummy = ... something ... here ... ''' import doctest; doctest.testmod() Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: using Pyro for network games
Michael Rybak [EMAIL PROTECTED] wrote:
Hi, everyone.
In topic 2-player game, client and server at localhost, I've asked
about subj, and Peter Hansen suggested to switch to Twisted, Pyro or
the like.
I've tried using Pyro.
I've written a very very simple test-game, in which you have 2 balls
controlled by 2 players. Each player moves his mouse somewhere at
his window, and his ball starts moving towards the pointer. No
objectives, just to test how it works. The code is very small, so I
can put it all here, skipping obvious stuff.
I've tried playing this test-game via local-host - all is ok.
Then I've tested via Internet connection with my friend. I have a
33.6 Kbps modem, he has a 2 MBps dedicated line (if this is the term),
and we ran a server at his pc and both connected to it. His ball ran as
a child, smoothly and quickly, while I had about 5 fps :(, and for him
it looked like my ball is simply very slow. I realise that client at
my pc *has* to work slower than the client at server's pc, but hey,
I've played Quake2 and WarCraft 2 via 33.6 modem, and those should have
much more stuff to transfer per second :(
Please help me in any way you can think of. I'd welcome links to
Python games written with Pyro, tips on what I am doing wrong, on not
Pythonically enough - anything.
Do not use pyro, use simple UDP protocol.
I've written networked tetris in python, communicating via
UDP protocol, and used it successfully on very congested lines.
If all you need is to transfer pointer coordinates, UDP is perfect since
you do not need feedback.
use something like this for server:
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s.bind(('', port))
while 1:
data, addr = s.recvfrom(1024)
print `data`
and for client:
import socket
outsock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
outsock.bind(('', 0))
outsock.sendto('message', ('server-hostname', server_port))
--
---
| Radovan Garabík http://kassiopeia.juls.savba.sk/~garabik/ |
| __..--^^^--..__garabik @ kassiopeia.juls.savba.sk |
---
Antivirus alert: file .signature infected by signature virus.
Hi! I'm a signature virus! Copy me into your signature file to help me spread!
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Re[4]: need for speed
sorry for emailing privately, pressed the wrong reply button DLB On Mon, 1 Aug 2005 20:14:51 +0300, Michael Rybak [EMAIL PROTECTED] DLB declaimed the following in comp.lang.python: Is there a way of profiling other than manual (debug output with DLB Chapter 10 of the Python Library Reference... You have looked at DLB that document, haven't you? Already am, yes! measurements and all)? Some tools? And is there some kind of plugin for native Python's IDLE to trace scripts? I'm a bit tired of getting DLB Have you read Chapter 9? ok, I'm looking through. A bit tough for me I think, I can live with debug outputs :) Well I'm too much used to M$ V$ / Borland Delphi interfaces to switch to almost-asm-like debugging. DLB BTW: if you are working on M$ Windows, only on that DLB you might want to consider installing the ActiveState release I tried, and the installer gives me that stupid Internal Error 2229: Control, SELECT 'Control', 'Type', 'X', 'Y', [..snip..], 'Dialog' = ? And I forgot the OK button. DLB -- PythonWin might be nicer than IDLE (and has the referenced DLB manuals formatted as Windows help files). I am using a *.chm file containing all online documentation available from python.org DLB -- DLB == DLB [EMAIL PROTECTED] | Wulfraed Dennis Lee Bieber KD6MOG DLB[EMAIL PROTECTED] | Bestiaria Support Staff DLB == DLB Home Page: http://www.dm.net/~wulfraed/ DLB Overflow Page: http://wlfraed.home.netcom.com/ -- Best Regards, Michael Rybak mailto:[EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re[6]: 2-player game, client and server at localhost
sorry for emailing privately, pressed the wrong reply button
Each player controls a snake, which is 2 to 12 balls connected to each
other with ropes; by mouse motions you move the snake's head, and the
rest of the body moves adhering normal physics. The objective/gameplay
DLB For purposes of the motion this snake -- the game rendering side
DLB (the client) probably should handle the physics. The only part being
DLB actively controlled is the head, and only the head movement needs to be
DLB sent -- the clients respond to head movement and compute the effect on
DLB the rest of the body. IOW, the head and /attached/ balls are ONE object
DLB for purposes of server I/O, not 2 to 12.
Well, that's exactly how I think of it.
is unimportant here, but if you're curios - all the balls of your
snake are bullets, and right-clicking releases current tail. So, you
have to spin around, and release the tail in appropriate moment so it
DLB At this point, you've added another object to track -- but it
DLB sounds like all you need to send is a vector (start position, direction,
DLB speed). The server, on each input can compute -- based on the
DLB situation at that moment -- if an intersect will occur, and when. That
DLB state doesn't change unless on or the other player inputs some new
DLB command (the target player, most likely, trying to avoid impact).
But that happens all the time, and lots of times per second! If you
played Quake, CS or even UT :), you know that you hold your forward
key pressed all the time, and you also move your mouse aiming on
target almost all the time. And when I play Quake, I *see* how my
opponent's model aims at me, I mean, his mouse motions are transferred
to me.
Well, I suppose that Quake doesn't send mouse motion, clients
probably retrieve the resulting aiming direction from server, but in
my case, as you said yourself, client side should do physics'
computations.
DLB Upon the new input, the server interpolates all moving objects -- that is,
DLB its prior update (time T0) says an intersect will occur at time T0+t,
DLB and the player response came in at t/2 (halfway, for simplicity). The
DLB server would compute positions for tracked objects at (T0+t/2), then
DLB apply the new motion vectors (player changed heading), transmit all this
DLB to all clients, and determine the next intersect time. The server
DLB doesn't have to do anything until either this intersect time or a play
DLB input comes in.
That's the problem - or a player input comes in. As I've explained,
this happens a dozen of times per second :(. I've even tried not
checking for player's input after every frame, but do it 3 times more
rare (if framecount % 3 == 0 : process_players_input()). Well, I've
already got it that I shouldn't tie this around framerate, but
nevertheless...
So, you see - server will have to send current status as much time per
second, as much fps I want, and that's quite a lot of data.
DLB No... Frame rate is independent. Each client should perform some
DLB tests to determine what frame rate they can support, and adjust their
DLB internal time-steps to that. The server should probably send a
DLB time-stamp so clients can adjust for running over (might result in small
DLB jerks on slow machines, say). Of course, the server will need to check
DLB its clock speed to determine what size a time step will be (and maybe
DLB send that to clients so clients can compute a clock factor for internal
DLB calculations -- especially if the server is using a simulation clock
DLB for speed rather than wall clock time)
I'm afraid I'm loosing it. Let's consider your example:
DLB Say the snake is moving left to right at 100 pixels (or some
DLB game internal unit) per second, and client one can only run 5FPS; that
DLB means each rendering pass uses the head position as:
DLB P(f) = P(T0) + (100/5)*f.
DLB {P(f) is Position(frame); P(T0) is the position at the start, the last
DLB status received from the server; 100/5 is the speed divided by the frame
DLB rate = speed per frame}
DLB The other client may be running 50FPS... For that client, the
DLB same status turns into:
DLB P(f) = P(T0) + (100/50)*f
DLB The first player sees the snake move 20 pixels per frame. The
DLB second player will see it move 2 pixels per frame, but will see 10
DLB frames in the time the first player sees one.
This sounds transparent, but my slow client isn't able to process
networking fast enough, so even if it's able to work at 30 fps, it
can't draw those 30 frames, because input from other player comes
instantly, about 10 times per second, and server tries sending this to
all clients. So my slow client simply can't know current true status,
thus has nothing to draw, because it can't handle 10 transfers per
second. And if server doesn't send user motions equal number of times
to all clients, while they compute the world's status, they will
happen to have different pictures
Re[2]: need for speed
sorry for emailing privately, pressed the wrong reply button BD Michael Rybak a écrit : BD (snip) Is there a way of profiling other than manual (debug output with measurements and all)? Some tools? BD http://docs.python.org/lib/profile.html BD HTH Oh, wow! Manuals rule, I should have at least skimmed through. Thanks a lot, already profiling :) -- Best Regards, Michael Rybak mailto:[EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: startfile problems
Dennis Lee Bieber wrote: On Tue, 02 Aug 2005 15:10:23 +1000, Timothy Smith [EMAIL PROTECTED] declaimed the following in comp.lang.python: i'm very curious as to what everyone thinks I suspect most of us think: Where's the code? followed by: Where's the traceback? As for your statement of verifying the path and filename... We haven't seen it so can't guess... (part of the where's the code) Does the path contain \n, \t, \r, \f, etc. If it does, and you are not using a raw string, you are looking for a file with newline, tab, carriage return, formfeed, etc. respectively in the name. fid = c:\temp\something.pdf #bad, this is # c:tabemp\something.pdf # assuming \s isn't some special character fid = rc:\temp\something.pdf #good fid = c:\\temp\\something.pds #okay it's iterally just PDFname = 'tmp.pdf' os.startfile(PDFname) thats the code. so obviously it contains no errnous characters. see my update btw. it actually DOES open the report, but throws up the exception as well. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this Pythonic?
Delaney, Timothy (Tim) wrote:
Peter Hansen wrote:
Change those to raise NotImplementedError('blah') instead and you'll
be taking the more idiomatic approach.
One thing I've noticed, which I may raise on python-dev ...
NotImplementedError does *not* play well with super() ...
class A (object):
def test (self):
raise NotImplementedError
class B (object):
def test (self):
print 'B'
super(B, self).test()
class C (B, A):
def test (self):
print 'C'
super(C, self).test()
It's actually worse than AttributeError, because the method actually
exists. In both cases though you need to know when you create the base
class how it's going to be used to work out whether a super() call is
needed.
One option is to do a try: except (AttributeError, NotImplementedError).
Yuk - talk about hiding errors :(
Hm... one could return NotImplemented from the abstract method. It won't raise
an error immediately, but will certainly be discovered at some point.
Not optimal though.
Reinhold
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Re: Wheel-reinvention with Python
Hallöchen! Mike Meyer [EMAIL PROTECTED] writes: Torsten Bronger [EMAIL PROTECTED] writes: [...] I'm interested in a language with a big community. This is my definition of success. [...] GUI applications seem to be the most attractive application type. This is not only true for commercial programming. When I look at the most agile projects on Sourceforge, almost all of them have a GUI. Why restrict yourself to agile projects? Because such projects attract the greatest number of developers, many of them being amongst the most diligent developers, too. I expect this to have a positive influence of the language. [...] I won't argue that most of the projects on Sourceforge have GUIs - that's certainly true. I will argue that most of the projects are done in languages that aren't what you call GUI-aware. Yes, this is what I meant with legacy code. C and C++ are actually special-purpose. They are good for controlling a computer but not for implementing an idea. Their current vitality on almost all software areas arise from the fact that they had been extremely successful before Java, C#, and VB came into play. Invented today, they would be niche languages. However, even C++ is really successful only when used as a GUI-aware dialect. Additionally, Python does not have this legacy bonus. Therefore, GUI-aware languages attract much larger user bases, and so they cater my definition of being successful. Since you haven't stated what that definition is, I can't really say anything about this. Yes, I did. [...] Legacy code is not a sign of success IMO because it implies a difficult future. So you're saying that Python, Perl, Linux, the various BSD et. al. will have a difficult future? [...] No. All I said was that if a language's success relies almost exclusively on the heavy presence of legacy code, its future is difficult. I see this for C and C++ excluding VC++. They will always be there, but cool new things will be made available firstly (or only) for Java, C#, Python etc. [...] Or maybe you could switch to Jython, and just use swing? Actually I'm very happy with CPython. Besides, I don't like the Java world. When I left C++ last winter, I dithered between C#, Ruby, and Python. BTW this thread was extremely interesting for me. I've learnt a lot. (Unfortunately, two weeks ago I opted for wxPython, after a long and tough time of thorough pondering, and today this thread informed be about progress on the Tk front. *cry* ;-) Tschö, Torsten. -- Torsten Bronger, aquisgrana, europa vetus -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
Jorge Godoy opined: We can find several problems, almost all of them can be solved with the admin's creativity. In response to which Cliff Wells posted an interpreter session: import creativity Traceback (most recent call last): File stdin, line 1, in ? ImportError: No module named creativity Nope. Not included with Python. Can't be used. Does anyone remember where all the modules in The Path originated from? Joesusedgui modules mingle with the standard library on my machine, and as long as the import statements work, maybe it doesn't matter. Which, again, is Python? Python 2.4.1 (#65, Mar 30 2005, 09:13:57) [MSC v.1310 32 bit (Intel)] on win32 *** IDLE 1.1.1 import creativity creativity.whatis() Creativity is everywhere, even more so in the abysss generator object at 0x00B433F0 cheers -- http://mail.python.org/mailman/listinfo/python-list
Re: Python IDE's
vi/vim is a godssend if you need a working system that needs to fit in 4
Mb or ROM, but it's an editor not an IDE. You can debate about how good
an editor it is, but that's just differences in taste I suppose.
When talking about IDE's I mean a lot more as 'just' an editor, below is
my 'wishlist', I would be very interested what solutions you use, how
much time it took you to set up this solution, and which parts of my
'wishlist' it implements. Also suggestions to add to my 'wishlist' are
welcome:
- Integrated help.
when I press help button I should get a help page that's appropriate
for the piece of code my cursor currently sits on.
- Code completion.
If I type 'os.path.', the editor should be a ble to show me a list of
all methods and attributes the module has. If I then continue with
'os.path.isfile(', it should show me the parameters for the function.
- Integrated GUI design.
The IDE should have a graphical tool for designing GUIs, and the editor
should be aware of it and propagate changes in an inobtrusive way.
- Integrated debugger.
I should be able to run my module/program from the editor, execute up to
the current cursor position, preset breakpoints (maybe with conditions).
The editor should highlight the current line being executed, and give
you the choice to: step to the next line, step into the execution of the
current line, step out to the function that called the current code, run
to the next brekpoint, etc.
When the code is running I should be able to inspect the values of all
variables currently assigned and change them on the fly.
- Code aware editor.
Syntax highlighting, syntax checking, automatic indentation, loop
folding. Functionality like refatoring, create function from selected
code, inlining current selected function, template macros, coding
mistake warnings (for if (somevar); {do something;} in C/C++ kind of
mistakes).
- Integration with version control system.
- Code documentation/inspection tools.
Ability to generate include and inheritance trees, LOC counters,
profiling what lines of you code get executed most/never, helpfile
generation from code, etc.
- Project management.
Tools for communication with coworkers, bugtracking, which targets need
which files, automatic install scripts/tools, etc.
- Accessible user interface.
All functionality should be accessible through some menu structure, so I
don't need to depend on my memory. Prefereable reprogrammable/assignable
shortcut keys for all functionality, maybe even some form of macros,
plugins, etc.
- For C/C++:
memory leak detection
Why I want this?
Because I want to spend my time programming my code, not my developement
environment.
I currently use Eric3+QtDesigner for Python, and while not perfect, I
realy like it. I have used Borland C++Builder for C/C++ in the past for
Windows, but I haven't found a satisfactory C/C++ solution for my
current Linux system yet.
--
Adriaan Renting| Email: [EMAIL PROTECTED]
ASTRON | Phone: +31 521 595 217
P.O. Box 2 | GSM: +31 6 24 25 17 28
NL-7990 AA Dwingeloo | FAX: +31 521 597 332
The Netherlands| Web: http://www.astron.nl/~renting/
[EMAIL PROTECTED] 08/02/05 4:42 AM
On Mon, 01 Aug 2005 18:21:08 -0400
Benji York wrote:
Jon Hewer wrote:
But, if i use Vi, then whenever i want to test some code i have to
open up python, import the necessary modules and run it - I like the
idea of developing python in an IDE and just hitting a run button.
map F5 :wCR:!python %CR
Or, probably even better:
map F5 :wCR:!xterm -e python -i % CRCR
--
jk
--
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Re: doctest bug with nested triple quotes
This is my file
$ python -c print open('x.py').read().encode('base64')
IiIiCj4+PiBkdW1teSA9ICcnJwpzb21ldGhpbmcKaGVyZQonJycKIiIiCmltcG9ydCBkb2N0ZXN0
OyBkb2N0ZXN0LnRlc3Rtb2QoKQo=
but anyway I think Peter Otten is right, the problem is with the
missing dots.
It makes sense, actually, but for some reason I would never have
thought
of it (I did not expect doctest to be so smart to strip the dots even
inside a string).
Thanks for the feeback and the quick solution,
Michele Simionato
--
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Re: Dabo in 30 seconds?
Jorge Godoy wrote: I agree where you say that lack of information is a risk. But I don't see how it -- lack of information -- wouldn't affect both scenarios. At least, Because you put different probabilities on different outcomes. One easy 'risk markup' would be to assume that parts of the standard Python distribution like TkInter have a higher chance of working with the next release than external libraries like wxPython. Of course, there are lots of other possible criteria: - which has been under more active development in the last releases - which source code is easier to understand so that I don't have to rely on external help Daniel -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this Pythonic?
[EMAIL PROTECTED] (phil hunt) writes: Suppose I'm writing an abstract superclass which will have some concrete subclasses. I want to signal in my code that the subclasses will implement certan methods. Is this a Pythonic way of doing what I have in mind: class Foo: # abstract superclass def bar(self): raise Exception, Implemented by subclass def baz(self): raise Exception, Implemented by subclass class Concrete(Foo): def bar(self): #...actual implemtation... def baz(self): #...actual implemtation... Well, I guess you know this, but if Foo contains no implementation at all, why inherit from it? It would (possibly) be more Pythonic to define an interface instead, or just use duck typing. Cheers, mwh -- nonono, while we're making wild conjectures about the behavior of completely irrelevant tasks, we must not also make serious mistakes, or the data might suddenly become statistically valid. -- Erik Naggum, comp.lang.lisp -- http://mail.python.org/mailman/listinfo/python-list
Re[2]: using Pyro for network games
gn20kjss Do not use pyro, use simple UDP protocol.
gn20kjss I've written networked tetris in python, communicating via
gn20kjss UDP protocol, and used it successfully on very congested lines.
Would you please be so kind to share that with me? That would be
greatly helpful, because 1) I'd run it together with my friend to see
what speed I can get from UDP 2) I'd grasp the networking part of your
code and reuse it.
gn20kjss If all you need is to transfer pointer coordinates, UDP is perfect
since
gn20kjss you do not need feedback.
gn20kjss use something like this for server:
gn20kjss import socket
gn20kjss s = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
gn20kjss s.bind(('', port))
gn20kjss while 1:
gn20kjss data, addr = s.recvfrom(1024)
gn20kjss print `data`
gn20kjss and for client:
gn20kjss import socket
gn20kjss outsock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
gn20kjss outsock.bind(('', 0))
gn20kjss outsock.sendto('message', ('server-hostname', server_port))
Would you recommend some reading on this? I have some immediate
questions to your code, but don't want to flood here. OK, I will flood
here a bit: what's the print `` syntax?
P.S. I loved your virus alert ;)
gn20kjss --
gn20kjss ---
gn20kjss | Radovan Garabik http://kassiopeia.juls.savba.sk/~garabik/ |
gn20kjss | __..--^^^--..__garabik @ kassiopeia.juls.savba.sk |
gn20kjss ---
gn20kjss Antivirus alert: file .signature infected by signature virus.
gn20kjss Hi! I'm a signature virus! Copy me into your signature file to help
me spread!
--
Best Regards,
Michael Rybak mailto:[EMAIL PROTECTED]
Antivirus alert: file .signature infected by signature virus.
Hi! I'm a signature virus! Copy me into your signature file to help me spread!
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Re: ANN: Kamaelia 0.2.0 released!
Kamaelia seems it might be an interesting project. However, I don't think the project is well served by this announcement -- which I find vague and hard to understand. Which is a shame, because it means that other people probably don't understand it very well either, which means less people will use it. In a spirit of constructive criticism I'd like to give some detailed comments about this... On Mon, 01 Aug 2005 19:50:11 +0200, Michael Sparks [EMAIL PROTECTED] wrote: Kamaelia is a collection of Axon components designed for network protocol experimentation in a single threaded, select based environment. Axon components are python generators are augmented by inbox and outbox queues (lists) for communication in a communicating sequential processes (CSP) like fashion. I really have very little idea what this means. The architecture is specifically designed to try and simplify the process of designing and experimenting with new network protocols in real environments. The information I can guess out of this is: Kamaelia is a library for creating network protocols that sit on top of tcp and/or udp. Given that it's a BBC project, I imagine we're talking about protocols for transferring large amount of data, e.g. sound or motion pictures. More background on the motivations behind Kamaelia can be found here: http://kamaelia.sourceforge.net/Challenges/ There's something interesting here: In Building Public Value, the BBC has committed to the delivery of BBC content to the British Public over this multitude of systems, in a way that is enjoyable, accessible and **repurposable** by the British Public in the way they choose. (my emphasis) This is a laudable aim, but if the BBC want to do this, the first step they could make is to open up their content under a Creative Commons licence. They could start with their news, current affairs and documentaries. They could also do this with music downloads: for example a few weeks ago they made available for free download all of Beethoven's symphonies, performed by the BBC Orchestra. But the download only staryed up for a week, and they didn't put the files under a CC license, so they could be redistributed. Why not? It would have cost them no more to do so than what they did, and would've provided better value for downloaders and music lovers. Of course, the music industry would've complained, but they did anyway. Frankly, fuck them. Their business model is obsolete, and they should either get a new one or crawl into a corner and die. BTW, the html is broken in that it's very poorly written, doedsn't use CSS, and some of the stuff that is intended to display in a monospaced font doesn't. For example, this HTML code from http://kamaelia.sourceforge.net/Docs/Axon.html: divspan style=font-family:Courier 10 Pitch;font-weight:600def/spanspan style=font-family:Courier 10 Pitch main(self):/span/div ul type=discdivspan style=font-family:Courier 10 Pitch;font-weight:600yield/spanspan style=font-family:Courier 10 Pitch 1br //spanspan style=font-family:Courier 10 Pitch;font-weight:600while/span span style=font-family:Courier 10 Pitch(self.i):/span/div could be better written as: pre def main(self): yield 1 while (self.i): /pre Much, much simpler, and actually works. General feedback is welcome either directly, mailing lists or via the project weblog which is here: * http://kamaelia.sourceforge.net/cgi-bin/blog/blog.cgi I guess the main question that needs to be answered is Why would I, as a programmer, use Kamaelia? -- Email: zen19725 at zen dot co dot uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Wheel-reinvention with Python
On Tue, 02 Aug 2005 00:42:53 -0400, Mike Meyer [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] (phil hunt) writes: In practise any Python GUI is going to contain code from otyher languages since if it was coded all the way down in python it would be too slow. Not necessarily. My window manger is Python all the way down Your X server is written in Python? :-) - it uses the Python Xlib implementation - and is plenty fast. Of course, it doesn't do a lot of graphics work, even for a window manager. That's what I mean: painting the individual pixels on the screen. -- Email: zen19725 at zen dot co dot uk -- http://mail.python.org/mailman/listinfo/python-list
Re: Python Programming Contest: First results
Tomi Kyöstilä wrote: Why don't I see my solution (__author__ = dOb) in the results? I'm sure that you got it as you replied to my mail. Ahhh...sorry. I have your solution and I timed it but I don't have the results here so I can't add it to the website. I'll do it tomorrow. Where do the timing results come from? Is it the number that fly_test.main(['fly']) outputs? I don't think it is that because with my solution that would be ~0.06 seconds. This is the time required to do several thousand trials. Cheers, Brian -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this Pythonic?
On Tue, 02 Aug 2005 08:31:27 GMT, Michael Hudson [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] (phil hunt) writes: Suppose I'm writing an abstract superclass which will have some concrete subclasses. I want to signal in my code that the subclasses will implement certan methods. Is this a Pythonic way of doing what I have in mind: class Foo: # abstract superclass def bar(self): raise Exception, Implemented by subclass def baz(self): raise Exception, Implemented by subclass class Concrete(Foo): def bar(self): #...actual implemtation... def baz(self): #...actual implemtation... Well, I guess you know this, but if Foo contains no implementation at all, why inherit from it? (in fact the class I'm using/creating does contain some implementation) It would (possibly) be more Pythonic to define an interface instead, Does Python have the concept of an interface? When was that added? -- Email: zen19725 at zen dot co dot uk -- http://mail.python.org/mailman/listinfo/python-list
Re: calling functions
anthonyberet wrote:
This is the first time I have tried out functions (is that the main way
of making subroutines in Python?)
A function is allowed to change it's arguments and to return None, so
yes, you can consider it as a 'subroutine'.
Anyway, my function, mutate, below
#make a child string by randomly changing one character of the parent
Def mutate():
s/Def/def/
meta
please copy-paste code - retyping it increases the risk of typos.
/meta
newnum=random.randrange(27)
if newnum==0:
gene=' '
else:
gene=chr(newnum+96)
position=random.randrange(len(target))
child=parent[:position-1]+gene+parent[position+1:]
Where does this 'gene' come from ?-)
mutate()
The trouble is when I later (as in further down the code) attempt to
retrieve the value of gene I get an error saying that gene is undefined.
Of course it is.
It works fine when I don't have the routine defined as a function. - the
IF- Else structure means gene must have a value of ' ' or 'a' to 'z'.
This 'gene' only lives in the function body - as with almost any other
programming language.
It seems that the line:
mutate()
is not invoking the function,
It is. But this function does not return anything (well, it returns
None, which is the Python representation of exactly nothing) - and you'd
loose it if it did anyway.
non-pythonic-explanation
A variable created in a function is local to the function. It disappears
as soon as the function returns - unless you keep a reference to it one
way or another. The usual way to do so is to return the variable to the
caller :
/non-pythonic-explanation
def mutate():
newnum = random.randrange(27)
if newnum == 0:
gene=' '
else:
gene = chr(newnum + 96)
return gene
gene = mutate()
# target and parent where undefined...
# please post working code
parent = 0123456789
#position = random.randrange(len(target))
position = random.randrange(len(parent))
child=parent[:position-1]+gene+parent[position+1:]
Now you may want to check your algorithm, since it doesn't perform as
described - but this is another problem !-)
hints:
import string
string.ascii_lowercase
help(random.choice)
astring = abcd
alist = list(astring)
alist[0] = 'z'
astring2 = ''.join(alist)
Also note that a function can take arguments:
def fun_with_args(arg1, arg2):
print in func_with_name : arg1 = %s - arg2 = %s % (arg1, arg2)
fun_with_args('toto', 'titi')
so you can have the whole algorithm in the function body:
def createChild(parent):
# code here to create child
return child
parent = 0123456789
child = createChild(parent)
print parent : %s\nchild : %s % (parent, child)
Thanks again - this group is great. I despair of ever being able to
contribute though :-(
You did. There would be no answer if there were no questions !-)
BTW, may I suggest you to spend some time on a good Python tutorial ?
(there are many good ones freely available on the net).
HTH
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: Is this Pythonic?
[EMAIL PROTECTED] (phil hunt) writes: It would (possibly) be more Pythonic to define an interface instead, Does Python have the concept of an interface? When was that added? It doesn't have one included, but there are at least two implementations, zope.interface and PyProtocols (I'm sure google will find you more on both of these). -- ... with these conditions cam the realisation that ... nothing turned a perfectly normal healthy individual into a great political or military leader better than irreversible brain damage. -- The Hitch-Hikers Guide to the Galaxy, Episode 11 -- http://mail.python.org/mailman/listinfo/python-list
Re: Newer than a Newbe
None wrote:
Hello,
I am just starting to look into python.I have been prog with php for
several years.My question is:
Can/Is Python used as a web scripting language
Yes, definitively.
There are in fact almost too many web-programming solutions in Python,
from the good ole cgi to the full-blown web application server.
, and if so do many hosts
support it?
No.
Thanks
You're welcome !-)
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
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Re: [path-PEP] Path inherits from basestring again
Ron Adam wrote: PS. Could someone repost the links to the current pre-pep and the most recent module version so I can look at it closer look? Pre-pre-PEP: http://wiki.python.org/moin/PathClass Reinhold's version of the module is in Python CVS in nondist/sandbox/path. Jason Orendorff's version is at http://www.jorendorff.com/articles/python/path/. -- Michael Hoffman -- http://mail.python.org/mailman/listinfo/python-list
HTTPSConnection Password
Hi, I'm using httplib to create a mutually authenticated HTTPS connection with a server. I create the connection as follows: c = httplib.HTTPSConnection(uri, key_file = key, cert_file = cert) However, because I am using a private key I keep getting asked to enter the password to open that key every time I run the script. I've had a dig around and can't seem to find a way of specifying the password so that the user can supply it on the command line, or so I can script/fully automate these connections. The ideal scenario would be to be able to specify the password on the command line like in curl/pyCurl How can I set the password for the private key so it doesn't keep asking me for it? Appologies if I've missed something obvious here. Thanks, Michael. p.s. I need to use httplib (rather than pyCurl) as I need to be able to specify methods other than GET and POST in my requests to the server. -- http://mail.python.org/mailman/listinfo/python-list
C++, Swig, and pyMPI
I would like to be able to write a C++ function, to be wrapped into some python, to be able to communicate over pyMPI. As pyMPI is based on C++ I figure that this should be possible, although I'm not sure of where to start. I know the basics of swig and pyMPI, but not how I would do this. Does anyone know if this is possible and where to start? -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Kamaelia 0.2.0 released!
Phil Hunt wrote: Kamaelia seems it might be an interesting project. However, I don't think the project is well served by this announcement -- which I find vague and hard to understand. Which is a shame, because it means that other people probably don't understand it very well either, which means less people will use it. It is a shame, and thanks for mentioning this. Let me have another go :-) (ripping to shreds welcome :) OK, here's a better go. (It's always difficult to think where to pitch this sort of thing) ---START--- The project aims to make it simple to build networked multimedia systems (eg audio, video, interactive systems), which are naturally componentised and naturally concurrent allowing quick and fast reuse in the same way as Unix pipelines do. It is designed as a practical toolkit, such that you can build systems such as: * Ogg Vorbis streaming server/client systems (via vorbissimple) * Simple network aware games (via pygame) * Quickly build TCP based network servers and clients * Quickly build Multicast based network servers and clients It runs on Linux, Window, Mac OS X with a subset running on Series 60 phones. The basic underlying metaphor of a component us like an office worker with inboxes and outboxes, with deliveries occuring between desks, offices, and depts. The component can thus do work anyway it likes but only communicates with these inboxes and outboxes. Like office workers, components run in parallel, and to achieve this are generally implemented using python generators, but can also used threads. The rationale behind the project is to provide a toolkit enabling the development of new protocols, including streaming, for large scale media delivery. The license essentially allows use in proprietary systems without change, but all changes to the system itself must be shared. ---END--- Is that clearer ? A short summary of all that could be: Kamaelia is a networking/communications infrastructure for innovative multimedia systems. Kamaelia uses a component architecture designed to simplify creation and testing of new protocols and large scale media delivery systems. Hopefully that's clearer than: Kamaelia is a collection of Axon components designed for network protocol experimentation in a single threaded, select based environment. Axon components are python generators are augmented by inbox and outbox queues (lists) for communication in a communicating sequential processes (CSP) like fashion. [ which you noted I really have very little idea what this means. ] The information I can guess out of this is: Kamaelia is a library for creating network protocols that sit on top of tcp and/or udp. Given that it's a BBC project, I imagine we're talking about protocols for transferring large amount of data, e.g. sound or motion pictures. Indeed. However, if you're having to guess I'm not doing the best job (despite trying!) at explaining this. More background on the motivations behind Kamaelia can be found here: http://kamaelia.sourceforge.net/Challenges/ There's something interesting here: In Building Public Value, the BBC has committed to the delivery of BBC content to the British Public over this multitude of systems, in a way that is enjoyable, accessible and **repurposable** by the British Public in the way they choose. (my emphasis) This is a laudable aim, but if the BBC want to do this, the first step they could make is to open up their content under a Creative Commons licence. not such a wise thing for me to reply to, but please read the disclaimer at the bottom, these are personal opinions only I would suggest that you forward this comment directly to the team involved in working on the Creative Archive. You can do this via this URL: * http://creativearchive.bbc.co.uk/ This is unfortunately not as simple as just putting stuff up, and any comments you have, I'm sure would be welcome. However, the Creative Archive hasn't yet been put to a Public Value Test (including impact on industry), and rights is a much more problematic issue than you might expect. (eg background music on the radio in eastenders, posters on people's walls...) There's also http://www.bbc.co.uk/info/contactus/form.shtml which might be more appropriate. On a positive note, the Creative Archive has more organisations involved than just the BBC, it inlucde the BFI , Channel 4, Open University Teachers'TV, so even if these things take longer than some people might like they do seem to be moving. Public organisations are weighed down whether the should do something, as well as whether they can. BBC RD's role in this is to make these decisions possible. They could start with their news, current affairs and documentaries. BBC Backstage is a start here - at least with some of the online content. (http://backstage.bbc.co.uk) But the download only staryed up for a week, and they didn't put the files under a CC license, so they could be
Re: Newer than a Newbe
Truthfully, the number of frameworks is staggering, tho some are specialized for blogs/wiki, search engine, PIM, etc. http://www.colorstudy.com/docs/shootout.html http://pythonology.org/howto http://aspn.activestate.com/ASPN/Cookbook/Python?kwd=Web http://www.awaretek.com/tutorials.html#web http://www.personal.psu.edu/staff/i/u/iua1/python_reviews.html http://subway.python-hosting.com/ http://snakelets.sourceforge.net/ http://www.cherrypy.org/ http://spyce.sourceforge.net/ http://www.mems-exchange.org/software/quixote/ http://mail.python.org/pipermail/medusa-dev/2003/000843.html http://www.awaretek.com/tutorials.html#firedrop http://www.webwareforpython.org/ http://wiki.webwareforpython.org/thiswiki.html http://moinmoin.wikiwikiweb.de/ http://webservices.xml.com/pub/a/ws/2003/05/13/email.html http://www.oreillynet.com/pub/au/1099 http://www.divmod.org/Home/Projects/Lupy/ -- http://mail.python.org/mailman/listinfo/python-list
SOAPpy and http authentication
I use the following piece of code to contact a webservice, and read a wsdl file. from SOAPpy import WSDL from SOAPpy import URLopener url= ' http://someserver/somewebservice url1 = URLopener.URLopener(username='user',passwd='pass') server=WSDL.Proxy(url1.open(url)) This yields no errors, and everyting is fine. However, when I start calling the actual methods of this webservice, I get this error SOAPpy.Errors.HTTPError: HTTPError 401 Unauthorized How can I avoid this? Thanks in advance for all help! -- Har du et kjøleskap, har du en TV så har du alt du trenger for å leve -Jokke Valentinerne -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
Daniel Dittmar wrote: Because you put different probabilities on different outcomes. One easy 'risk markup' would be to assume that parts of the standard Python distribution like TkInter have a higher chance of working with the next release than external libraries like wxPython. Of course, there are lots I think it will be true only if there's no package for the considered toolkit on my Linux distribution, *BSD, Windows or Mac. I don't see it as a risk because having the toolkit available on the destination platform is a pre-requisite and comes before coding. If I already have the code working on some version, backwards compatibility handles a little of the problem and besides, I can create one new package for the lacking environment. I just need to do this work once. of other possible criteria: - which has been under more active development in the last releases - which source code is easier to understand so that I don't have to rely on external help - Which takes less time - Which needs less hand written code - Which provides more functionality - Which has data aware controls - ... There are lots of other things that are considered, independently of the toolkit. None gets a 100% OK grade, and some things have a higher weight to me or to the client. -- Jorge Godoy [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: C++, Swig, and pyMPI
2 Aug 2005 03:47:02 -0700 skrev stringy: I would like to be able to write a C++ function, to be wrapped into some python, to be able to communicate over pyMPI. As pyMPI is based on C++ I figure that this should be possible, although I'm not sure of where to start. I know the basics of swig and pyMPI, but not how I would do this. Does anyone know if this is possible and where to start? Are you sure that pyMPI are C++-based? I think it is based on pure C? Besides that, it is not clear (at least to me) what you try to achive. Do you want to use MPI also in your extension module? mvh, -- Mandus - the only mandus around. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python IDE's
Hello, Thanks for your reply - that link is very useful, and i have been browsing through the various multiplatform editors/ide's (i'm looking for something to use on both my Windows machines and my Mac) You might want to have a look at the archive of the Python-Mac mailinglist. Someone who's maintaining the Mac OS X installers for several open-source IDEs has posted a quite extensive review of some IDEs very recently. To me it looks like Wing IDE may be the best choice if you want something perfectly solid and don't mind paying a reasonable price. Sincerely, Wolfgang Keller -- http://mail.python.org/mailman/listinfo/python-list
Re: Wheel-reinvention with Python
On Tue, 2005-08-02 at 09:45 +0200, Torsten Bronger wrote: Yes, this is what I meant with legacy code. C and C++ are actually special-purpose. They are good for controlling a computer but not for implementing an idea. Their current vitality on almost all software areas arise from the fact that they had been extremely successful before Java, C#, and VB came into play. Unfortunately your assertion is patently false. C and C++ are very much general-purpose languages. It is a logical contradiction to assert that Java, C#, VB and Python are general-purpose languages while C and C++ are not when the former were implemented using the latter. Being implemented in C, Python can do nothing that C cannot. It can certainly make it *easier* to do things, but it conveys no new abilities other than that of meeting deadlines ;) As an aside, I don't disagree with what I think is your main point: higher-level abstractions make more advanced ideas feasible. You simply state it far too strongly. Regards, Cliff -- [EMAIL PROTECTED] http://www.develix.com :: Web applications and hosting :: Linux, PostgreSQL and Python specialists :: -- http://mail.python.org/mailman/listinfo/python-list
Re: SOAPpy and http authentication
On 2005-08-02, Odd-R. [EMAIL PROTECTED] wrote: from SOAPpy import WSDL from SOAPpy import URLopener url= ' http://someserver/somewebservice url1 = URLopener.URLopener(username='user',passwd='pass') server=WSDL.Proxy(url1.open(url)) Is it possible to call WSDL.Proxy with a String? Then you could build the URL als http://user:[EMAIL PROTECTED]/somewebservice. This works with SOAPpy.SOAPProxy. Lutz -- http://mail.python.org/mailman/listinfo/python-list
Re: Wheel-reinvention with Python
Hallöchen! Cliff Wells [EMAIL PROTECTED] writes: On Tue, 2005-08-02 at 09:45 +0200, Torsten Bronger wrote: Yes, this is what I meant with legacy code. C and C++ are actually special-purpose. They are good for controlling a computer but not for implementing an idea. Their current vitality on almost all software areas arise from the fact that they had been extremely successful before Java, C#, and VB came into play. Unfortunately your assertion is patently false. C and C++ are very much general-purpose languages. This is true in the sense that you can realise an arbitrary program with them, and you can use the full power of the computer. But in my opinion the era of such programming is over. Already today but even more in the future programs of all kind are coded in the higher-level languages (including VC++), limiting C(++) to the field of system programming. Probably quibbling, but this is how I meant it. Tschö, Torsten. -- Torsten Bronger, aquisgrana, europa vetus -- http://mail.python.org/mailman/listinfo/python-list
RE: ANN: Kamaelia 0.2.0 released!
[Michael Sparks] | Phil Hunt wrote: | | Kamaelia seems it might be an interesting project. However, I don't | think the project is well served by this announcement -- which I | find vague and hard to understand. Which is a shame, because it | means that other people probably don't understand it very well | either, which means less people will use it. | | It is a shame, and thanks for mentioning this. Let me have another | go :-) (ripping to shreds welcome :) | | OK, here's a better go. (It's always difficult to think where to pitch | this sort of thing) [... snip ...] I just wanted to say that I find the ideas behind Kamaelia interesting, and I only wish I had an application for it! Because I'm not especially into media-streaming, I'm more interested in it from the point of view of the generator-based architecture. What prompted me to write now was in appreciation of Michael's taking the effort to recast his words into a form which might well be understood better by others (including me) when he might well have simply huffed a bit and told the other poster to read the words on the site and stop complaining about the HTML! Thanks, Michael. Hope the project continues apace and if I can ever find a need for it, I'll know where to look. Tim Golden This e-mail has been scanned for all viruses by Star. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk -- http://mail.python.org/mailman/listinfo/python-list
Re: SOAPpy and http authentication
2 Aug 2005 11:38:51 GMT, Lutz Horn [EMAIL PROTECTED]: On 2005-08-02, Odd-R. [EMAIL PROTECTED] wrote: from SOAPpy import WSDL from SOAPpy import URLopener url= ' http://someserver/somewebservice url1 = URLopener.URLopener(username='user',passwd='pass') server=WSDL.Proxy(url1.open(url)) Is it possible to call WSDL.Proxy with a String? Then you could build the URL als http://user:[EMAIL PROTECTED]/somewebservice. This works with SOAPpy.SOAPProxy. Yes, you can actually call it that way, but then the wsdl retrieval is done using the authentication, but all the service calls are done without. This is something, that is also puzzling me. So far I can perfectly live with SOAPProxy, but it would be nice to solve this puzzle. Best regards, Oliver -- Oliver Andrich [EMAIL PROTECTED] --- http://fitheach.de/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Newer than a Newbe
gene tani wrote: Truthfully, the number of frameworks is staggering, tho some are specialized for blogs/wiki, search engine, PIM, etc. [snip massive yet even so incomplete list] It's called biodiversity and, while generally this is a good thing, I think it's high time for some of these Python web frameworks to start mating and having nice little baby web frameworks which keep all the good genes and dispense with the bad. :-) Actually, I strongly suspect this is already happening, as there are clear signs the latest generation of frameworks is quite a bit more sophisticated than the earlier ones. So... does anyone have a nice framework with TLS and sessions support, which they'd like to rent out for stud? ;-) -Peter -- http://mail.python.org/mailman/listinfo/python-list
ANN: matplotlib 0.83.2
matplotlib is a 2D plotting package for python. This is a summary of recent developments in matplotlib since 0.80. For detailed notes, see http://matplotlib.sf.net/whats_new.html, http://matplotlib.sf.net/CHANGELOG and http://matplotlib.sf.net/API_CHANGES == Whats New == matplotlib wiki: this was just launched a few days ago and only has two entries to date, but we hope this will grow into a useful site with tutorials, howtos, installation notes, recipes, etc. Please contribute! Thanks to scipy.org and Enthought for hosting. http://www.scipy.org/wikis/topical_software/MatplotlibCookbook CocoaAgg: New CocoaAgg backend for native GUI on OSX, 10.3 and 10.4 compliant, contributed by Charles Moad. TeX support : Now you can (optionally) use TeX to handle all of the text elements in your figure with the rc param text.usetex in the antigrain and postscript backends; see http://www.scipy.org/wikis/topical_software/UsingTex. Thanks to Darren Dale for hard work on the TeX support. Reorganized config files: Made HOME/.matplotlib the new config dir where the matplotlibrc file, the ttf.cache, and the tex.cache live. Your .matplotlibrc file, if you have one, should be renamed to .matplotlib/matplotlibrc. Masked arrays: Support for masked arrays in line plots, pcolor and contours. Thanks Eric Firing and Jeffrey Whitaker. New image resize options interpolation options. See help(imshow) for details, particularly the interpolation, filternorm and filterrad kwargs. New values for the interp kwarg are: 'nearest', 'bilinear', 'bicubic', 'spline16', 'spline36', 'hanning', 'hamming', 'hermite', 'kaiser', 'quadric', 'catrom', 'gaussian', 'bessel', 'mitchell', 'sinc', 'lanczos', 'blackman' Byte images: Much faster imaeg loading for MxNx4 or MxNx3 UInt8 images, which bypasses the memory and CPU intensive integer/floating point conversions. Thanks Nicolas Girard. Fast markers on win32: The marker cache optimization is finally available for win32, after an agg bug was found and fixed (thanks Maxim!). Line marker plots should be considerably faster now on win32. Qt in ipython/pylab: You can now use qt in ipython pylab mode. Thanks Fernando Perez and the Orsay team! Agg wrapper proper: Started work on a proper agg wrapper to expose more general agg functionality in mpl. See examples/agg_test.py. Lots of wrapping remains to be done. Subplot configuration: There is a new toolbar button on GTK*, WX* and TkAgg to launch the subplot configuration tool. GUI neutral widgets: Matplotlib now has cross-GUI widgets (buttons, check buttons, radio buttons and sliders). See examples/widgets/*.py and http://matplotlib.sf.net/screenshots.html#slider_demo. This makes it easier to create interactive figures that run across backends. Full screen mode in GTK*: Use 'f' to toggle full screen mode in the GTK backends. Thanks Steve Chaplin. Downloads available from http://matplotlib.sf.net -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
James Stroud [EMAIL PROTECTED] wrote: Perhaps some of us are writing software with non-developer end-users in mind and we kind of keep that mentality when evaluating modules our code uses. In the commercial environment I'm working in, non-developer end-users get a frozen executable. They don't know that there are eight packages not included in the standard library (including wxPython) in there, unless they go looking in the licences directory. They don't even have to install Python. Using a swarm of potentially awkward third-party modules and keeping things simple for the user are not incompatible. Of course, going back to Dabo there is the question of whether it has such a thing as a non-developer end-user. -- \S -- [EMAIL PROTECTED] -- http://www.chaos.org.uk/~sion/ ___ | Frankly I have no feelings towards penguins one way or the other \X/ |-- Arthur C. Clarke her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
On Tuesday 02 August 2005 09:15, Sion Arrowsmith wrote: Of course, going back to Dabo there is the question of whether it has such a thing as a non-developer end-user. Yes and no. Developers will be the primary users of Dabo, of course, but they will most likely use it to create apps that non-developers will then use, so packaging/distribution certainly comes into play at some point. -- -- Ed Leafe -- http://leafe.com -- http://dabodev.com -- http://mail.python.org/mailman/listinfo/python-list
JBUS and Python which way
Hi, I'm a newbie without a technical background making some technology research for a company I work for. My aim is to have an idea of the alternatives technologies for accessing information produced by a machine with a JBUS interface (RS232) and how to access this information realtime in Python (connecting a PC locally via serial port). I'm aware of pyserial but I wonder if there is a library/module that takes care of accessing/interpreting JBUS protocol. I've searched for this without results. I also searched the net looking for some information so that I could have a birds-eye-view on this subject and got the impression that a possibility is to have the communication (JBUS protocol / buffering) managed by some hardware component. Is this so? Can some-one give me some pointers/resources on this subject. Would it still be possible to work with Python. Hope this makes any sense. All help appretiatted. Txs, Miguel -- http://mail.python.org/mailman/listinfo/python-list
RE: Terminate a thread that doesn't check for events
Can someone please comment on this? From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Liu Shuai Sent: Monday, August 01, 2005 4:29 PM To: python-list@python.org Subject: Terminate a thread that doesn't check for events Hi all, I am aware that similar and probably same questions have been posted many times, but I was unable to find a solution after reading a dozen threads in the archive. So here it goes again. I have a thread that does some heavy task (hash calculation, for instance). I need a mechanism that works *across platforms* to stop that calculation if user decides to exit. How can I do that? I can not do the standard periodical checking way since there is only one function/step call in my thread. Here is a snippet of my thread classes to help illustrate the problem: class Dispatcher(): def __init__(self): self.__worker = Worker() def start(self): self.__worker.start() def stop(): #how do i stop the worker? class Worker(threading.Thread): def __init__(self): def run(self): oneTimeConsumingCall() Thank you in advance for any suggestions/pointers. LS -- http://mail.python.org/mailman/listinfo/python-list
finding sublist
hi everyone my target is implement a function controlla(string - a binary string-) that check if there is in a string two equal not overlapping subsequences at least of length limitem: my code: def controlla(test): # print test limitem=4 lunghezz=len(test) l1=lunghezz-limitem+1 l2=lunghezz-limitem+1 f=0 for ii in range(l1): for kk in range(l2): t1=test[ii:ii+limitem] t2=test[kk:kk+limitem] if abs(ii-kk)=limitem : if t1==t2 : f=1 if f==1 : break break break if f==0 : return test else: return 'no' the question is: Is there a faster way doing that? I don't know, changing string into list or array, using map, or module, using different loop, regular expression,funcional programming , list comprehensions , sets, different looping techniques, i dont know...(!) -- http://mail.python.org/mailman/listinfo/python-list
Re: finding sublist
giampiero mu wrote:
hi everyone
my target is implement a function controlla(string - a binary string-)
that check if there is in a string two equal not overlapping
subsequences at least of length limitem:
You can do this with a regular expression:
import re
r=re.compile(r'(?Pseq.{4,}).*(?P=seq)')
r.match('abcaoeaeoudabc')
r.match('abcdaeaeuabcd')
_sre.SRE_Match object at 0x008D67E0
_.group(1)
'abcd'
r.match('abcdefgaeaeuabcdefg')
_sre.SRE_Match object at 0x008D68E0
_.group(1)
'abcdefg'
Kent
my code:
def controlla(test):
# print test
limitem=4
lunghezz=len(test)
l1=lunghezz-limitem+1
l2=lunghezz-limitem+1
f=0
for ii in range(l1):
for kk in range(l2):
t1=test[ii:ii+limitem]
t2=test[kk:kk+limitem]
if abs(ii-kk)=limitem :
if t1==t2 :
f=1
if f==1 :
break
break
break
if f==0 :
return test
else:
return 'no'
the question is: Is there a faster way doing that? I don't know,
changing string into list or array, using map, or module, using
different loop, regular expression,funcional programming , list
comprehensions , sets, different looping techniques, i dont
know...(!)
--
http://mail.python.org/mailman/listinfo/python-list
Class design for parser object
I've been working on a Python class object for APRS (Automatic Position Reporting System - a digital mode used by amateur radio operators) and have been going through David Mertz's Text Processing in Python book to help in the construction of the parser component of the class. I was curious if there was a good reference on the most pythonic design of parsing objects. For instance, should one parse raw or formatted data upon initialization and return a boolean indicating success/failure, or require multiple steps to instantiate then parse and test? Are there generally found public methods in parsing objects that would serve as a good model? Thanks - Jamie -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter, Menu(bar) font size
Yeah. It works on a Sun and Linux, but not Windows. That stinks. We got a bunch of 1400x1050 display laptops in and now I have to run around changing a bunch of programs that looked fine on 1024x768 displays. Thanks! [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Tk tries to use the native menu control on Windows (and, I think, MacOS). One result seems to be that for the application's menu bar you can't change the font. Of course, Windows provides a way for users to select a uniform font for menu bars in all applications, in the Display control panel. Jeff -- http://mail.python.org/mailman/listinfo/python-list
Re: 2-player game, client and server at localhost
Michael Rybak wrote: That's the problem - or a player input comes in. As I've explained, this happens a dozen of times per second :(. I've even tried not checking for player's input after every frame, but do it 3 times more rare (if framecount % 3 == 0 : process_players_input()). Well, I've already got it that I shouldn't tie this around framerate, but nevertheless... There's the key. How are you processing network input, specifically retrieving it from the socket? -- http://mail.python.org/mailman/listinfo/python-list
RE: Terminate a thread that doesn't check for events
On Tue, 2 Aug 2005 09:51:31 -0400, Liu Shuai [EMAIL PROTECTED] wrote: Can someone please comment on this? [snip - how to stop a thread without its cooperation?] There's no way to do this with threads, sorry. Perhaps you could use a child process, instead. Those are typically easy to terminate at arbitrary times. Jp -- http://mail.python.org/mailman/listinfo/python-list
Re: Python IDE's
The thing that nudged me into trying VIM was the book, The Pragmatic Programmer. It mentioned Emacs and VIM and the value of learning a powerful editor and sticking with it. I had tried Emacs three times long ago, and it didn't click with me. I decided to try VIM, and it made a lot more sense to me. Yep, there's a steep learning curve. I learned a lot of the basic command in a day or so, then gradually learned more and more. I'm always finding something new about it. There's tons of scripts, plug-ins, and tips at the vim.org site. A couple of important things to me are: Cross platform: I work with Windows, Linux, VMS, and Mac Works with mulitple languages: I write Python, Perl, XHTML/HTML, CSS, Javascript, SQL, COBOL, DCL, and occasionally VBScript. I will point out that both Emacs and VIM do their best to keep your hands on the keyboard which supposedly keeps you more productive since you don't have to waste time grabbing the mouse to perform many tasks. That philosophy is alien to many people and does take some getting used to. I think both of these editors have their roots in the pre-mouse days. http://brianray.chipy.org//Python/pythonandvim.html has a blog about VIM with Python built in. You can script VIM with Python. http://www.vim.org/scripts/script.php?script_id=910 is a script that allows you to use PyDoc from within VIM, so you can look up documentation on modules while coding. http://www.vim.org/scripts/script.php?script_id=850 pydiction is a special dictionary file of Python modules for use with vim's completion feature. http://www.vim.org/scripts/script.php?script_id=127 is a plug in for running Python scripts from within VIM. http://www.vim.org/scripts/script.php?script_id=1096 allows you to run PyChecker from within VIM. Code folding, auto indentation, syntax highlighting are standard features in VIM. Anyway, it's worth checking out VIM. If it doesn't click with you, look at Emacs. I'd imagine that it has as many plug-ins/scripts for Python as VIM. -- http://mail.python.org/mailman/listinfo/python-list
time.clock() or time.time()
What's the difference between time.clock() and time.time() (and please don't say clock() is the CPU clock and time() is the actual time because that doesn't help me at all :) I'm trying to benchmark some function calls for Zope project and when I use t0=time.clock(); foo(); print time.clock()-t0 I get much smaller values than when I use time.clock() (most of them 0.0 but some 0.01) When I use time.time() I get values like 0.0133562088013, 0.00669002532959 etc. To me it looks like time.time() gives a better measure (at least from a statistical practical point of view). -- http://mail.python.org/mailman/listinfo/python-list
RE: Terminate a thread that doesn't check for events
Thanks for the reply Chris. Are you suggesting running the task in a *separate* process instead of a separate *thread*? Because if that's the case, I will have to share data (and possible memory) between that new process and my master process since they depend on one other. Yeah I will sure post it if I can find an elegant solution. Thank you, LS -Original Message- From: Chris Lambacher [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 02, 2005 11:50 AM To: Liu Shuai Subject: Re: Terminate a thread that doesn't check for events Hi, There is no cross platform way to do this. You need to periodically check a quit flag, or perform a platform specific action to terminate it. On Linux you can send the process a signal. On windows you will need to use the win32all package. If you decide to go the later route, maybe you could encapsulate the thread termination code in a module and share it with the Python community. -Chris On Tue, Aug 02, 2005 at 09:51:31AM -0400, Liu Shuai wrote: Can someone please comment on this? - - From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Liu Shuai Sent: Monday, August 01, 2005 4:29 PM To: python-list@python.org Subject: Terminate a thread that doesn't check for events Hi all, I am aware that similar and probably same questions have been posted many times, but I was unable to find a solution after reading a dozen threads in the archive. So here it goes again. I have a thread that does some heavy task (hash calculation, for instance). I need a mechanism that works *across platforms* to stop that calculation if user decides to exit. How can I do that? I can not do the standard periodical checking way since there is only one function/step call in my thread. Here is a snippet of my thread classes to help illustrate the problem: class Dispatcher(): def __init__(self): self.__worker = Worker() def start(self): self.__worker.start() def stop(): #how do i stop the worker? class Worker(threading.Thread): def __init__(self): def run(self): oneTimeConsumingCall() Thank you in advance for any suggestions/pointers. LS -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
a pickle's pickle
I'm trying to pickle a class, and while I get no errors or anything,
almost none of the class instance gets pickled, and I don't know
why...Here's the pickled output:
(i__main__
TrainingMatrix
p0
(dp1
S'matrixWords'
p2
I4714
sS'numWords'
p3
I4714
sS'totalWordsProcessed'
p4
I46735
sS'numContexts'
p5
I7664
sS'estimator'
p6
(dp7
sb.
--End of output
The class TrainingMatrix has no embedded classes and none of its
methods have embedded methods. An instance of this class running in my
program for about 10 minutes can build up on the order of 100MB in
resident memory, but the output seems to be the same regardless of the
data set size. The output seems to not even capture all of the member
variables in the class. Here is the class code, abridged:
class TrainingMatrix:
matrix = []
estimator = {}
wordInfo = {}
contextInfo = {}
totalWordsProcessed = 0
numWords = 0
numContexts = 0
matrixWords = 0
def AddWordInfo(self,newWordInfo,newCapScheme):
...
#End AddWordInfo
def AddNewWord(self,newCapScheme):
...
#End AddNewCapScheme
def AddContext(self,newContext):
...
#End AddContext
def AddInstance(self,word,context):
...
#End AddInstance
def UpdateMatrix(self,wordIndex,contextIndex,isLowerCase):
...
#End UpdateMatrix
def PrintMatrix(self):
...
#End PrintMatrix
def EstimateLowerCase(self):
...
#End GetNumWords
def GetWordInfo(self,wordToFind):
...
#End GetWordInfo
def GetContext(self,wordList,direction):
...
#End GetContext
def GetBestCapScheme(self,wordInfo,precedeContext,followContext):
...
#End GetBestCapScheme
def IsLowerCase(self,word):
...
#End IsLowerCase
#End TrainingMatrix
###
And here is the pickling code:
try:
trainDB = open(trainDBString,r+)
except IOError:
trainDB = open(trainDBString,w)
trainDB.close()
trainDB = open(trainDBString,r+)
#End try
...
try:
trainerString = trainDB.read()
trainer = loads(trainerString)
except EOFError:
trainer = TrainingMatrix()
#End try
...
trainerString = dumps(trainer)
trainDB.write(trainerString)
I've also tried a simple shelve implementation but got results similar
to this, which is why I recoded to pickle, since it's lower level. Any
help is appreciated :-)
-Andrew
--
http://mail.python.org/mailman/listinfo/python-list
Re: Terminate a thread that doesn't check for events
No. On Linux a separate thread is a separate process with shared memory. You can send a signal to a particular process and catch that signal as an indication that you need to terminate (perhapse something that is set up before running your long running process so that it is generic). In windows threads are separate beasts from processes(almost) and there are functions for terminating them (though I don't think gracefully). Unfortunately I can't comment on other platforms. -Chris On Tue, Aug 02, 2005 at 11:54:57AM -0400, Liu Shuai wrote: Thanks for the reply Chris. Are you suggesting running the task in a *separate* process instead of a separate *thread*? Because if that's the case, I will have to share data (and possible memory) between that new process and my master process since they depend on one other. Yeah I will sure post it if I can find an elegant solution. Thank you, LS -Original Message- From: Chris Lambacher [mailto:[EMAIL PROTECTED] Sent: Tuesday, August 02, 2005 11:50 AM To: Liu Shuai Subject: Re: Terminate a thread that doesn't check for events Hi, There is no cross platform way to do this. You need to periodically check a quit flag, or perform a platform specific action to terminate it. On Linux you can send the process a signal. On windows you will need to use the win32all package. If you decide to go the later route, maybe you could encapsulate the thread termination code in a module and share it with the Python community. -Chris On Tue, Aug 02, 2005 at 09:51:31AM -0400, Liu Shuai wrote: Can someone please comment on this? - - From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Liu Shuai Sent: Monday, August 01, 2005 4:29 PM To: python-list@python.org Subject: Terminate a thread that doesn't check for events Hi all, I am aware that similar and probably same questions have been posted many times, but I was unable to find a solution after reading a dozen threads in the archive. So here it goes again. I have a thread that does some heavy task (hash calculation, for instance). I need a mechanism that works *across platforms* to stop that calculation if user decides to exit. How can I do that? I can not do the standard periodical checking way since there is only one function/step call in my thread. Here is a snippet of my thread classes to help illustrate the problem: class Dispatcher(): def __init__(self): self.__worker = Worker() def start(self): self.__worker.start() def stop(): #how do i stop the worker? class Worker(threading.Thread): def __init__(self): def run(self): oneTimeConsumingCall() Thank you in advance for any suggestions/pointers. LS -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Why Tcl/Tk?
Thomas Bartkus [EMAIL PROTECTED] wrote: William Park [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Jerry He [EMAIL PROTECTED] wrote: I'm a little curious, why does most scripting languges(i.e. python and ruby) use Tcl/Tk rather than wx or Fox as its standard GUI? Although I did notice that the Vpython IDE that uses Tkinker starts up a lot faster than the DrPython IDE that uses wxpython. But that makes no sense, Tk is based on Tcl, a scripting language, but wx is written in C++. Old habits die hard. Soon, these folks will die off, and we'll be left with GTK+ or wxWidgets. Ahhh! That devilish little or If we only knew which one :-) Thomas Bartkus If you're C, then GTK+. If you're C++, then wxWidgets. Since I do C mostly, I looked into GTK+ (actually, stared at the doc for 2 weeks and absorbed what I can through osmosis) and decided to include GTK+ interface into Bash shell. Here is the result: http://home.eol.ca/~parkw/index.html#gtk -- William Park [EMAIL PROTECTED], Toronto, Canada ThinFlash: Linux thin-client on USB key (flash) drive http://home.eol.ca/~parkw/thinflash.html BashDiff: Super Bash shell http://freshmeat.net/projects/bashdiff/ -- http://mail.python.org/mailman/listinfo/python-list
Re[2]: 2-player game, client and server at localhost
CS Michael Rybak wrote: That's the problem - or a player input comes in. As I've explained, this happens a dozen of times per second :(. I've even tried not checking for player's input after every frame, but do it 3 times more rare (if framecount % 3 == 0 : process_players_input()). Well, I've already got it that I shouldn't tie this around framerate, but nevertheless... CS There's the key. How are you processing network input, specifically CS retrieving it from the socket? A sock class has a socket with 0.1 timeout, and every time I want anything, I call it's read_command() method until it returns anything. read_command() and send_command() transfer user's actions in special format so that it takes 10 bytes per transfer. I believe this should be rewritten to be done in a separate thread, and that *current* user input should be processed as *next* one: while 1: render() inp = get_player_input() thread.start_new(send_inp, (inp,)) thread.start_new(accept_opponents_inp, ()) while still_no_opponents_input_from_previous_iteration() time.sleep(0.05) process_previous_player_input() physics.make_step I will try writing it that way, but I doubt it shall make things much better... You see, I've tried the normal 1-server-2-clients approach with Pyro (and today with simulating RMI proxy via UDP), and resulted with nothing comforting. Please read the using Pyro for network games topic here for details. -- Best Regards, Michael Rybak mailto:[EMAIL PROTECTED] Antivirus alert: file .signature infected by signature virus. Hi! I'm a signature virus! Copy me into your signature file to help me spread! P.S. here's the sock class. My server_sock and client_sock are derived from it, with additional accept_connection and establish_connection methods respectively. #sock.py import socket import com_network import constants as c_ class sock: def __init__(self, host): self.host = host self.port = c_._PORT self.sockobj = socket.socket(socket.AF_INET, socket.SOCK_STREAM) self.sockobj.settimeout(0.1) self.curcon = None #connection will be created and saved here self.connected = False def read_command(self): format: command_id - 1 byte command_size - CMD_LEN_BIT_SIZE bytes command_text - command_size bytes returns a triple (int id, int size, str text) if not self.connected: return (None, None) cmd = com_network.read_fixed(self.curcon, 1) if len(cmd) 1: #no cmd return (None, None) sz = com_network.read_fixed(self.curcon, CMD_LEN_BIT_SIZE) cmd, sz = str_to_cmd(cmd + sz) text = com_network.read_fixed(self.curcon, sz) return (cmd, text) def send_command(self, cmd, obj): send_text(self.curcon, com_network.cmd_to_str(cmd, str(obj))) def close(self): if self.connected: self.connected = False self.curcon.close self.curcon = None self.sockobj.close() -- http://mail.python.org/mailman/listinfo/python-list
Re: time.clock() or time.time()
[EMAIL PROTECTED] schrieb: What's the difference between time.clock() and time.time() (and please don't say clock() is the CPU clock and time() is the actual time because that doesn't help me at all :) clock (depending on the platform ?) measures the time spent by your program. Time gives you the system time, so the difference is the time between your calls, your program could have been idle (waiting for input or sharing processor due to multitasking) I'm trying to benchmark some function calls for Zope project and when I use t0=time.clock(); foo(); print time.clock()-t0 I get much smaller values than when I use time.clock() (most of them 0.0 but some 0.01) Run your code 100 times and divide the result by 100. Leonhard -- http://mail.python.org/mailman/listinfo/python-list
Art of Unit Testing
In August 2001, there was a thread about the Art of Unit Testing: http://groups.google.com/group/comp.lang.python/browse_frm/thread/aa2bd17e7f995d05/71a29faf0a0485d5 Paul Moore asked the legitimate question why there is no hook for a global fixture code that is run only once for the whole TestCase, as opposed to the normal setUp and tearDown code that is run for every single test in the TestCase. A global fixture would be preferable whenever creating the fixture is time consuming, e.g. you have to create a database connection or even a whole database. What would be the preferred solution for such global fixtures? Simply create the database, run the TestCase, and drop the database? Would it make sense to add globaleSetup and globalTearDown methods to the TestCase class? I think at least it would not harm anybody. Where should such proposals be submitted? -- Christoph Zwerschke -- http://mail.python.org/mailman/listinfo/python-list
Re: Art of Unit Testing
The py.test module offers setup/teardown hooks at the method, class and module level. The scenario you're describing would be covered at the module level. See the py.test documentation for more details: http://codespeak.net/py/current/doc/test.html#managing-test-state-across-test-modules-classes-and-methods Grig http://agiletesting.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
Re: a pickle's pickle
[EMAIL PROTECTED] wrote:
class TrainingMatrix:
matrix = []
estimator = {}
wordInfo = {}
contextInfo = {}
totalWordsProcessed = 0
numWords = 0
numContexts = 0
matrixWords = 0
Is there some confusion between the scope of the class
object and the scopes of the instance objects perhaps?
Are you aware of this distinction? See below:
class X:
... m=0
...
X.m
0
x=X()
x.m
0
x.m += 5
x.m
5
X.m
0
Are you pickling the class object or an instance?
If you are pickling the class: Why? Is the data
really in the class object?
If you are pickling an instance:
Is the data in the class object?
Is the data in another instance object?
--
http://mail.python.org/mailman/listinfo/python-list
Re: time.clock() or time.time()
Shane Hathaway wrote: time.time() measures real time, while time.clock() measures the time the CPU dedicates to your program. I suppose that varies with the platform... help(time.clock) says: Help on built-in function clock: clock(...) clock() - floating point number Return the CPU time or real time since the start of the process or since the first call to clock(). This has as much precision as the system records. Another thing to notice is that depending on OS, either time.time() or time.clock() might have much higher precision than the other. For Linux on Intel at least, you'll probably want to always use time.time(). On Windows, you're likely to prefer time.clock(), to measure relative times, since time.time() will have too low resolution for measuring short thingies. Be aware that time.clock() will restart at 0 now and then though. I.e. t1=time.clock();f();t2=time.clock() will have t1t2 now and then. Using time.time(), that won't happen until after I retire... :) For Linux, see man 2 time and man 3 clock. -- http://mail.python.org/mailman/listinfo/python-list
pre subprocess module help
I need to execute a command shell process obtain the return code and capture stdout from that shell process. I've done this with 2.4 using subprocess. How do I do it with 2.3? -- http://mail.python.org/mailman/listinfo/python-list
pre subprocess module help
I need to execute a command shell process obtain the return code and capture stdout from that shell process. I've done this with 2.4 using subprocess. How do I do it with 2.3? -- http://mail.python.org/mailman/listinfo/python-list
pre subprocess help needed
I need to execute a command shell process obtain the return code and capture stdout from that shell process. I've done this with 2.4 using subprocess. How do I do it with 2.3? -- http://mail.python.org/mailman/listinfo/python-list
Pythoncom scripting Windows Media Player visible
I'm trying to make Windows Media Player visible and control it from Python. It seems when I call it below, I get only the console version, and there's no Visible method like with Internet Explorer. I do catch events, but I need it visible. Should it be put into a panel instead? Should a different type dispatch be called or a different method? it seems that there are a console and a windows classes in the COM browser, but I can't seem to access any useful windows classes. I get fullScreen as False, but can't set it. openPlayer(address) will launch a visible window, but with no control of the the window after that. Ideas? from win32com.client import Dispatch,DispatchWithEvents class WMPEvents: def OnVisible(self,evt): print OnVisible changed:,evt def OnError(self,evt=None): print OnError,evt def OnMediaError(self,evt=None): print OnMediaError,evt def OnDisconnect(self,evt): print OnDisconnect,evt def OnStatusChange(self): print OnStatusChange def OnDisconnect(self,evt): print Disconnect,evt def OnBuffering(self,evt): print OnBuffering changed:,evt def OnOpenStateChange(self,evt=None): print OnOpenStateChange ,evt mp = DispatchWithEvents(WMPlayer.OCX.7,WMPEvents) mp.Visible = True # Does nothing tune = mp.newMedia(C:/WINDOWS/system32/oobe/images/title.wma) mp.currentPlaylist.appendItem(tune) mp.controls.playItem(tune) mp.controls.play() raw_input(Press enter to stop playing) mp.controls.stop() -- http://mail.python.org/mailman/listinfo/python-list
Re: Printing Docstrings Without Importing
On 1 Aug 2005 06:50:23 -0700, Fuzzyman [EMAIL PROTECTED] wrote: This seems to scratch several people's itches. Care to develop/maintain it ? Are you talking to me? ;-) (My news server is having some problem. I saw my post on google groups but my normal news client isn't seeing it.) Assuming you are talking to me, there's a bug, naturally, in trying to escape None as a doc string. It was twenty minutes of hacking and a half hour of trying to choose html colors, so there's not that much there ;-) But what did you have in mind? Javascript menu rollovers for popup docs of functions and classes and methods etc? Full help info access? Optional pdf output? That would take more than another hour, but I did fix the mentioned bug and put a table of clickable module names at the top with the file date stamps and paths so you can navigate down to the spcific module docstring output quickly if you have a lot of them. Of course, I think I'd put styling in the header rather than hack more raw html if I were to go another round. I'll post the latest once I can see my postings in context with my own newsreader again. Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: a pickle's pickle
I intended to pickle the class instance I call trainer...from my code, also in the first post: trainerString = trainDB.read() trainer = loads(trainerString) except EOFError: trainer = TrainingMatrix() ... trainerString = dumps(trainer) ... So basically trainer always gets an existing TrainingMatrix(the class) pickled object if there is a file to read from, otherwise it just makes a new instance. Either way, the instance trainer is pickled at the end. Maybe I'm missing something... -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe windows apps path question
Grant Edwards [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] |I have several python apps (some wxPython, some plain text-mode | stuff) that I distribute internally for installation on Win32 | machines. They're bundled/installed using py2exe and inno | setup. | | I followed what I think is the normal procedure of installing | each app in its own directory under /Program | Files/vendor/app. | | The problem is that the apps only run if they're started with | the install directory as the current working directory. | Otherwise they can't find the .dll's they use from the install | directory. AFAIK, Windows normally *does* search the directory where the executable module for the current process lives in for dlls. What sort of dlls are given you trouble? -- Vincent Wehren | | Is there some way to temporarily add the app's install | directory to the search path for .dll's? | | -- | Grant Edwards grante Yow! .. I think I'd | at better go back to my DESK | visi.comand toy with a few common | MISAPPREHENSIONS... -- http://mail.python.org/mailman/listinfo/python-list
bug in python/numarray
Hi, there, I got different results by running the same lines of code on windows and debian. Here is the code: a = kroneckerproduct(ones((4195,1)), identity(12)) print a.mean() This works perfectly well in windows but it gave the following error while running it in debian: Traceback (most recent call last): File stdin, line 1, in ? File /usr/lib/python2.4/site-packages/numarray/numarraycore.py, line 1137, in mean return self.sum()/(self.nelements()*1.0) File /usr/lib/python2.4/site-packages/numarray/numarraycore.py, line 1133, in sum return ufunc.add.reduce(ufunc.add.areduce(self, type=type).flat, type=type) IndexError: too many indices. But if I reduce the number 4195 to 419, it works. Is it a bug in Python or Numarray? Can someone help me figure it out? BTW, the python version is 2.4.1 Many thanks! Xiangyi -- http://mail.python.org/mailman/listinfo/python-list
Re: finding sublist
Hello. my target is implement a function controlla(string - a binary string-) that check if there is in a string two equal not overlapping subsequences at least of length limitem: my code: [snip] I may have misunderstood it, but does your function work the way you want it to? controlla(testeststest) no I can't get it to print anything other than no. But then again, I'm reading and posting via Google and I guess all those break statements shouldn't be on the same indent-level. the question is: Is there a faster way doing that? I don't know, changing string into list or array, using map, or module, using different loop, regular expression,funcional programming , list comprehensions , sets, different looping techniques, i dont know...(!) Since you're using nested for loops when searching the string you should make sure not to perform more iterations than neccessary. The function below returns a list of all, non-overlapping, substrings in text where len(substring)= minLength. The outer loop is limited to about half of the length of the text which is where most of the speed comes from but I'm sure it can be tweaked for more. def foo(text, minLength): result= [] for length in range(minLength, len(text)/ 2+ 1): for start in range(len(text)): end= start+ length if end len(text): part= text[start:end] if text.find(part, end)!= -1: if part not in result: result.append(part) return result foo(testeststest, 4) ['test', 'stes', 'stest'] foo(testeststest, 3) ['tes', 'est', 'ste', 'test', 'stes', 'stest'] HTH Johan Lindberg [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: pre subprocess help needed
There is a version of subprocess for 2.3. http://www.lysator.liu.se/~astrand/popen5/ http://effbot.org/downloads/#subprocess On Tue, Aug 02, 2005 at 10:05:00AM -0700, chuck wrote: I need to execute a command shell process obtain the return code and capture stdout from that shell process. I've done this with 2.4 using subprocess. How do I do it with 2.3? -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
Ed Leafe wrote: On Monday 01 August 2005 11:56, Terry Reedy wrote: That is an impossibility. However, there is a middle path between that and no defensive code. In the present case, you appear to acknowledge a known easy way to mis-compile wxWidgets from Dabo's viewpoint. If there is a known easy way to detect that misconfiguration (which I suspect there is), and it is known that someone has tripped over that problem (which it now is), then a nice error message like 'Sorry, Dabo need wxWidgets compiled with the --include_stylized_text option' would certainly be friendlier than a stack trace. OK, that's more of what I had in mind. Truth be told, this is the first time we've run into this, and as a result I'll make the change to that import statement today. plug, but hopefully a useful one You may want to steal the crash handling code from ipython. In order to address this kind of problem, ipython sticks an exceptionally verbose traceback printer into sys.excepthook. If ipython ever crashes, the user gets a LOT of info, and it's all packaged ready to go, to be emailed to me. Here's an example of the result (I stuck 1/0 inside to force the crash): In [1]: print 'hello' hello In [2]: --- exceptions.ZeroDivisionError Python 2.3.4: /usr/bin/python Tue Aug 2 11:21:46 2005 A problem occured executing Python code. Here is the sequence of function calls leading up to the error, with the most recent (innermost) call last. /home/fperez/usr/bin/ipython -2 import IPython -1 0 IPython.Shell.start().mainloop() /usr/local/home/fperez/code/python/IPython/Shell.py in mainloop(self=IPython.Shell.IPShell instance, sys_exit=0, banner=None) /home/fperez/code/python/IPython/iplib.py in mainloop(self=IPython.iplib.InteractiveShell instance, banner='Python 2.3.4 (#1, Feb 2 2005, 12:11:53) \nType ...ut \'object\'. ?object also works, ?? prints more.\n') 1263 1264 def mainloop(self,banner=None): 1265 Creates the local namespace and starts the mainloop. 1266 1267 If an optional banner argument is given, it will override the 1268 internally created default banner. 1269 1270 self.name_space_init() 1271 if self.rc.c: # Emulate Python's -c option 1272 self.exec_init_cmd() 1273 if banner is None: 1274 if self.rc.banner: 1275 banner = self.BANNER+self.banner2 1276 else: 1277 banner = '' - 1278 self.interact(banner) self.interact = bound method InteractiveShell.interact of IPython.iplib.InteractiveShell instance at 0x4005ffac banner = 'Python 2.3.4 (#1, Feb 2 2005, 12:11:53) \nType copyright, credits or license for more information.\n\nIPython 0.6.16_svn -- An enhanced Interactive Python.\n? - Introduction to IPython\'s features \n%magic - Information about IPython\'s \'magic\' % functions.\nhelp- Python\'s own help system.\nobject? - Details about \'object\'. ?object also works, ?? prints more.\n' 1279 1280 def exec_init_cmd(self): 1281 Execute a command given at the command line. 1282 1283 This emulates Python's -c option. 1284 1285 sys.argv = ['-c'] 1286 self.push(self.rc.c) 1287 1288 def embed_mainloop(self,header='',local_ns=None,global_ns=None,stack_depth=0): 1289 Embeds IPython into a running python program. 1290 1291 Input: 1292 1293 - header: An optional header message can be specified. [...] LOTS MORE: each stack frame has a lot of surrounding context printed, and all locals as well. Then this is the end of the printout: 1399 except KeyboardInterrupt: - 1400 1/0 1401 self.write(\nKeyboardInterrupt\n) 1402 self.resetbuffer() 1403 more = 0 1404 # keep cache in sync with the prompt counter: 1405 self.outputcache.prompt_count -= 1 1406 1407 if self.autoindent: 1408 self.readline_indent = 0 1409 1410 except bdb.BdbQuit: 1411 warn(The Python debugger has exited with a BdbQuit exception.\n 1412 Because of how pdb handles the stack, it is impossible\n 1413 for IPython to properly format this particular exception.\n 1414 IPython will resume normal operation.) 1415 ZeroDivisionError: integer division or modulo by zero ** Oops, IPython crashed. We do our best to make it stable, but... A crash report was automatically generated with the following information: - A verbatim copy of
Re: Art of Unit Testing
Björn Lindström [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Christoph Zwerschke [EMAIL PROTECTED] writes: Would it make sense to add globaleSetup and globalTearDown methods to the TestCase class? I think at least it would not harm anybody. Where should such proposals be submitted? In general that's not such a good idea. If you build your tests like that, it gets hard to know which test really went wrong, and you might get the situation where the whole set of tests works, but depend on each other in some way. (This can also happen for more obscure reasons, and is worth looking out for whichever way you do it.) So, rebuilding the environment for the each before every single test is generally worth the overhead. Generally is not always. There are configuration issues that are best dealt with once at the beginning of the test, and once at the end, and that have absolutely nothing to do with the order in which each elementary test runs. When your customers keep asking for something, and you keep telling them that they really don't want what they're asking for, who's lisening, and who's being stubborn? John Roth Python Fit. -- Björn Lindström [EMAIL PROTECTED] Student of computational linguistics, Uppsala University, Sweden -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
Fernando Perez wrote: plug, but hopefully a useful one You may want to steal the crash handling code from ipython. In order to address this kind of problem, ipython sticks an exceptionally verbose traceback printer into sys.excepthook. If ipython ever crashes, the user gets a LOT of info, and it's all packaged ready to go, to be emailed to me. Here's an example of the result (I stuck 1/0 inside to force the crash): [snip] This approach has worked very well for me over the years, and these crash report emails have become fortunately rather rare as of late :) If you are interested, just get ipython and grab the files for this, it's all BSD licensed. You can also browse the SVN repo here if you want to look at the code: http://ipython.scipy.org/svn/ipython/ipython/trunk/IPython/ The relevant files are ultraTB.py and CrashHandler.py. Thanks Fernando, consider your excellent code stolen! :) I'll probably make a flag that defaults to ultraTB but that can also be set to leave sys.excepthook as-is. Best of both worlds! I've done things like this in the past, in my own Visual Foxpro framework. In that situation, I had enough control over the deployment to also ship a small smtp client, and automatically email the error without requiring any interaction at all. Clients were impressed when I'd already have a fix for the problem before they even notified me of the issue! -- Paul McNett http://paulmcnett.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
On Tuesday 02 August 2005 13:40, Fernando Perez wrote: The point is that something like this: - gives an experienced user a lot of information to track down the bug if they feel like it. - but also gives the raw newbie an easy solution: just mail me that auto-generated crash file and forget about it. Thanks! This looks like a great approach - I may have to borrow it! -- -- Ed Leafe -- http://leafe.com -- http://dabodev.com -- http://mail.python.org/mailman/listinfo/python-list
Re: 2-player game, client and server at localhost
Michael Rybak wrote: CS There's the key. How are you processing network input, specifically CS retrieving it from the socket? A sock class has a socket with 0.1 timeout, and every time I want anything, I call it's read_command() method until it returns anything. read_command() and send_command() transfer user's actions in special format so that it takes 10 bytes per transfer. So when you want player input, you explicitly halt the program until you receive it, inside a while loop? No wonder your programs aren't behaving well, then. Network processing Is Not Slow. Unless you're sending near the maximum capacity of your line, which you're obviously not[1], the slowness is architectural. [1] - The TCP packet contains at most 28 bytes of overhead, so combine that with 10 bytes of data and you're looking at 38 bytes/packet. A 33.6 modem can handle 4.2kB/sec, cut that in half for a safety margin for 2.1kB/sec. That will handle about 55 updates/second, which you shouldn't be reaching if you're just sending updates when a player does something. Why are you messing with sockets directly, to begin with? It looks like you want an asynchronous socket interface, so that you don't explicitly loop and wait for data from the nyetwork for updates. In addition to making Julienne fries, Twisted is an excellent framework for asynchronous network IO. For a naive, non-threaded implementation, you'd schedule your update code as a timed event, and you'd define a Protocol for handling your network stuff. When you receive data, the protocl would update your application's state, and that would be picked up automagically the next time your update event ran. In a threaded implementation, you'd run your update code to a thread (DeferToThread), and your network code would post updates to a synchronous queue, read by your update code. -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe windows apps path question
On 2005-08-02, vincent wehren [EMAIL PROTECTED] wrote: Grant Edwards [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] |I have several python apps (some wxPython, some plain text-mode | stuff) that I distribute internally for installation on Win32 | machines. They're bundled/installed using py2exe and inno | setup. | | I followed what I think is the normal procedure of installing | each app in its own directory under /Program | Files/vendor/app. | | The problem is that the apps only run if they're started with | the install directory as the current working directory. | Otherwise they can't find the .dll's they use from the install | directory. AFAIK, Windows normally *does* search the directory where the executable module for the current process lives in for dlls. What sort of dlls are given you trouble? One's a driver for a CAN bus USB widget. The other failure that springs to mind is that gnuplot-py couldn't find something (could have been an .exe) that was in the app directory. -- Grant Edwards grante Yow! HUGH BEAUMONT died at in 1982!! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe windows apps path question
Gregory Piñero [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] |And here is how I make sure I'm always using the right directory in my scripts: | |Put this code at the top: |import sys |curdir=os.path.dirname(sys.argv[0]) |#print curdir |Then I use curdir to build all of the paths in my app: |For example let's get a list of files in a folder: |lstresumes=os.listdir(os.path.join(curdir,resume_folder_path)) #get |list of resumes snipped Greg, If you need something that works both on a frozen app as well as an (unfrozen) python script, you'd be better off using something like: def getAppPrefix(): Return the location the app is running from isFrozen = False try: isFrozen = sys.frozen except AttributeError: pass if isFrozen: appPrefix = os.path.split(sys.executable)[0] else: appPrefix = os.path.split(os.path.abspath(sys.argv[0]))[0] return appPrefix Now you can use the return value of getAppPrefix() everywhere you need to calculate paths relative to your app, regardless if it involves a regular script or py2exe'ified one. Regards, -- Vincent Wehren -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe windows apps path question
Grant Edwards [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] | On 2005-08-02, vincent wehren [EMAIL PROTECTED] wrote: | | Grant Edwards [EMAIL PROTECTED] schrieb im Newsbeitrag | news:[EMAIL PROTECTED] | |I have several python apps (some wxPython, some plain text-mode | | stuff) that I distribute internally for installation on Win32 | | machines. They're bundled/installed using py2exe and inno | | setup. | | | | I followed what I think is the normal procedure of installing | | each app in its own directory under /Program | | Files/vendor/app. | | | | The problem is that the apps only run if they're started with | | the install directory as the current working directory. | | Otherwise they can't find the .dll's they use from the install | | directory. | | AFAIK, Windows normally *does* search the directory where the executable | module for the current process lives in for dlls. What sort of dlls are | given you trouble? | | One's a driver for a CAN bus USB widget. The other failure | that springs to mind is that gnuplot-py couldn't find something | (could have been an .exe) that was in the app directory. Grant, If you are building paths in you code that are relative to your app, please see my reply to Greg's post. If not, you may as a workaround want to try to add the frozen application's directory to the system path environment variable. Windows will look for dlls there, too. To get the app's actual location, you will need something like the getAppPrefix() function as per my reply to Greg's reply. The getAppPrefix() function will also hold when the user adds your frozen app to his/her system path and call the app from any location from the command line - sys.argv[0] just won't do the trick in such a setting. HTH, -- Vincent Wehren | | -- | Grant Edwards grante Yow! HUGH BEAUMONT died | at in 1982!! | visi.com -- http://mail.python.org/mailman/listinfo/python-list
IronPython 0.9 Released
IronPython 0.9 Released(8/2/2005 10:28:41 AM) http://www.microsoft.com/downloads/details.aspx?familyid=cf5ae627-5df1-4f8a-ba8b-d64f0676f43fdisplaylang=en -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe windows apps path question
If you need something that works both on a frozen app as well as an (unfrozen) python script, you'd be better off using something like: def getAppPrefix(): Return the location the app is running from isFrozen = False try: isFrozen = sys.frozen except AttributeError: pass if isFrozen: appPrefix = os.path.split(sys.executable)[0] else: appPrefix = os.path.split(os.path.abspath(sys.argv[0]))[0] return appPrefix Vincent, This sounds interesting. A few questions for you: Why don't I see sys.frozen in interpreter? Does it only appear when it is frozen? What do you mean by frozen, how does python know? What does sys.executable do? Thanks, Greg -- http://mail.python.org/mailman/listinfo/python-list
Re: Dabo in 30 seconds?
Paul McNett wrote: Fernando Perez wrote: If you are interested, just get ipython and grab the files for this, it's all BSD licensed. You can also browse the SVN repo here if you want to look at the code: http://ipython.scipy.org/svn/ipython/ipython/trunk/IPython/ The relevant files are ultraTB.py and CrashHandler.py. Thanks Fernando, consider your excellent code stolen! :) I'll probably make a flag that defaults to ultraTB but that can also be set to leave sys.excepthook as-is. Best of both worlds! Glad to be of use! I should probably ship this standalone, as I'm sure a lot of projects could use it, and the tracebacks are a hell of a lot better than what you get with python's default printouts. So little time... By all means contact me with complaints/bugs if you run into problems with this code. Cheers, f -- http://mail.python.org/mailman/listinfo/python-list
Re: a pickle's pickle
[EMAIL PROTECTED] wrote:
So basically trainer always gets an existing TrainingMatrix(the class)
pickled object if there is a file to read from, otherwise it just makes
a new instance. Either way, the instance trainer is pickled at the end.
Right, but the data you're interested in is contained in the class, not
the instance. You need to move the mutable class attributes into the
instance. Like so:
class TrainingMatrix:
totalWordsProcessed = 0
numWords = 0
numContexts = 0
matrixWords = 0
def __init__(self):
self.matrix = []
self.estimator = {}
self.wordInfo = {}
self.contextInfo = {}
--
Benji York
--
http://mail.python.org/mailman/listinfo/python-list
Re: Art of Unit Testing
Thanks for the link, Grig. I wasn't aware of the py lib so far. The possibility to create fixtures at the three different scopes is exactly what I was looking for. Anyway, I think it would be nice to have that feature in the standard lib unittest as well. It should not be too hard to add setUpOnce and tearDownOnce methods in addition to setUp and tearDown. Actually, I am wondering that there doesn't seem to be any development progress since unittest was included in the standard lib of Python 2.1 in August 2001. I had expected that such an important module would be continually improved and maintained. How come? So few people using unit tests? Or do most people write their own testing code or use py.test? -- Christoph -- http://mail.python.org/mailman/listinfo/python-list
Re: bug in python/numarray
[EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hi, there, I got different results by running the same lines of code on windows and debian. Here is the code: a = kroneckerproduct(ones((4195,1)), identity(12)) I don't know what this does, but wonder if it uses a lot of memory. print a.mean() This works perfectly well in windows but it gave the following error while running it in debian: Were you running on one dual boot machine (with the same memory available to each OS) or on two different machines, especially with different amounts of memory. Traceback (most recent call last): File stdin, line 1, in ? File /usr/lib/python2.4/site-packages/numarray/numarraycore.py, line 1137, in mean return self.sum()/(self.nelements()*1.0) File /usr/lib/python2.4/site-packages/numarray/numarraycore.py, line 1133, in sum return ufunc.add.reduce(ufunc.add.areduce(self, type=type).flat, type=type) IndexError: too many indices. But if I reduce the number 4195 to 419, it works. Try using binary search (ie, try 2200 next) to pin down the exact breakdown point (as in 2123 works, 2124 does not) if there is one, or whether the breakdown is run dependent. Unload other apps and non-essential background process to see if that changes anything Is it a bug in Python or Numarray? If it is not a resource issue, assume the latter since it crashed in Numarray. I think its maintainers would want to know about it. Terry J. Reedy -- http://mail.python.org/mailman/listinfo/python-list
Re: a pickle's pickle
Benji, Thanks so much, you have saved the day ^_^ -- http://mail.python.org/mailman/listinfo/python-list
Re: Art of Unit Testing
Björn Lindström wrote: Would it make sense to add globaleSetup and globalTearDown methods to the TestCase class? In general that's not such a good idea. I completely agree and I think it makes a lot of sense that unittest calls setUp and tearDown for every single test. However, the fact that this is *generally* the best way doesn't exclude the fact that there are *exceptions* when it makes sense to setUp and tearDown not for every test, e.g. when it is absolutely sure that the fixture cannot be destroyed by the individual tests or when creating the fixture takes too much time. I already gave the example of creating database connections or even creating/importing whole databases. My question was, how do I handle these cases with the standard lib unittest? According to the extreme programming paradigm, testing should be done several times a day. So a requirement for extreme programm is that tests are fast enough. If the testing needs too much time, people are discouraged to test often. -- Christoph -- http://mail.python.org/mailman/listinfo/python-list
Fredericksburg, VA Zope and Python User Group
Please join us August 10, 7:30-9:00 PM, for the third meeting of the Fredericksburg, VA Zope and Python User Group (ZPUG). This meeting has four features of note. - Brian Lloyd, the author of Python for .Net (http://www.zope.org/ Members/Brian/PythonNet/) and the Zope Corporation VP of Engineering, will discuss his .Net platform and give a brief .Net overview. - Benji York, Zope Corp Senior Software Engineer, will discuss current functional testing practices on Zope 3, including using Selenium on Zope 3, using demo storage for functional testing, and using his own compelling new functional test package. Note that the majority of this discussion has strong applicability to automated testing of all web frameworks and applications. - We will serve the now-usual geek-chic fruit, cheese, and soft drinks. - Fred Drake, Zope Corp Senior Software Engineer, Python core developer, Python documentation maintainer and editor, and co-author of the O'Reilly book Python XML will give two of his books (http:// www.amazon.com/exec/obidos/tg/detail/-/0596001282/) to new attendees. Upon pressure, he admitted that he would be willing to autograph them if bribed with fruit, cheese, and soft drinks. Note that we are eager to have non-Zope-Corporation employees give presentations. :-) We had three new attendees last meeting, for a total of ten. Please come and bring friends! More information http://www.zope.org/Members/poster/ fxbgzpug_announce_3 and below. Hope to see you there! Gary General ZPUG information When: second Wednesday of every month, 7:30-9:00. Where: Zope Corporation offices. 513 Prince Edward Street; Fredericksburg, VA 22408 (tinyurl for map is http://tinyurl.com/duoab). Parking: Zope Corporation parking lot; entrance on Prince Edward Street. Topics: As desired (and offered) by participants, within the constraints of having to do with Python. Contact: Gary Poster ([EMAIL PROTECTED]) -- http://mail.python.org/mailman/listinfo/python-list
trying to parse non valid html documents with HTMLParser
I'm trying to parse html documents from the web, using the HTMLParser class of the HTMLParser module (python 2.3), but some web documents are not fully valids. When the parser finds an invalid tag, he raises an exception. Then it seems impossible to resume the parsing just after where the exception was raised. I'd like to continue parsing an html document even if an invalid tag was found. Is it possible to do this ? Here is a little non valid html document. -- html body a href=bogus link/a /body /html -- -- http://mail.python.org/mailman/listinfo/python-list
Re: py2exe windows apps path question
On 2005-08-02, vincent wehren [EMAIL PROTECTED] wrote: If you are building paths in you code that are relative to your app, I'm not using any paths. I use cytpes to load a .dll, and I don't really know what gnuplot-py is doing, but I think it's executing a .exe file and talking to it via a pipe or something. please see my reply to Greg's post. If not, you may as a workaround want to try to add the frozen application's directory to the system path environment variable. Windows will look for dlls there, too. That's probably the right answer. To get the app's actual location, you will need something like the getAppPrefix() function as per my reply to Greg's reply. The getAppPrefix() function will also hold when the user adds your frozen app to his/her system path and call the app from any location from the command line - sys.argv[0] just won't do the trick in such a setting. I'll give that a try. -- Grant Edwards grante Yow! .. I think I'd at better go back to my DESK visi.comand toy with a few common MISAPPREHENSIONS... -- http://mail.python.org/mailman/listinfo/python-list
Re: pre subprocess help needed
You can also use the spawn functions in os, together with the P_WAIT mode. os.spawnlp(os.P_WAIT, 'ls', 'ls') gconfd-martin kde-martin mcop-martin ssh-PhJzdB6333 gpg-bSRhOE ksocket-martin orbit-martin 0 os.spawnlp(os.P_WAIT, 'spam', 'spam') 127 -- http://mail.python.org/mailman/listinfo/python-list
Re: finding sublist
controlla(12345678) - 12345678 thanks everyone. only a question. there is a way to advantage of binary sequences? -- http://mail.python.org/mailman/listinfo/python-list
Re: Newer than a Newbe
linuxfreak wrote: Look at Karrigell. Its a web framework for Python http://karrigell.sourceforge.net I second this suggestion. Karrigell is a pleasure to work with and I'm sure it will appeal any python fun who dare to play with it. I also hope Pierre (its developer) lose some of his modesty and start to show off this beatifull framework :-) because so far, he's been reluctant to promote it until he is 100% sure it's mature and stable (it's been ready for a long time though). -- http://mail.python.org/mailman/listinfo/python-list
Re: bug in python/numarray
[EMAIL PROTECTED] wrote: Hi, there, I got different results by running the same lines of code on windows and debian. Here is the code: a = kroneckerproduct(ones((4195,1)), identity(12)) print a.mean() This works perfectly well in windows but it gave the following error while running it in debian: Traceback (most recent call last): File stdin, line 1, in ? File /usr/lib/python2.4/site-packages/numarray/numarraycore.py, line 1137, in mean return self.sum()/(self.nelements()*1.0) File /usr/lib/python2.4/site-packages/numarray/numarraycore.py, line 1133, in sum return ufunc.add.reduce(ufunc.add.areduce(self, type=type).flat, type=type) IndexError: too many indices. But if I reduce the number 4195 to 419, it works. Is it a bug in Python or Numarray? Can someone help me figure it out? BTW, the python version is 2.4.1 It's almost certainly numarray. I don't get an error on OS X with the latest CVS of numarray. Please try the latest CVS on your platforms, and if you still get this error, then post it to the numarray mailing list. Thanks! http://lists.sourceforge.net/lists/listinfo/numpy-discussion -- Robert Kern [EMAIL PROTECTED] In the fields of hell where the grass grows high Are the graves of dreams allowed to die. -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
