itools 0.15.1 released
itools is a Python library, it groups a number of packages into a single meta-package for easier development and deployment: itools.catalogitools.http itools.uri itools.cmsitools.i18n itools.vfs itools.csvitools.ical itools.web itools.datatypes itools.rss itools.workflow itools.gettextitools.schemas itools.xhtml itools.handlers itools.stl itools.xliff itools.html itools.tmx itools.xml This release brings some new features to itools.cms, and a lot of aesthetic and usability improvements: - Two new object types have been added, a forum and a wiki; - Added a contact form; - Added a forgotten password form; - Changed the layout of the menus; - Updated colors, icons and views here and there. Other than this the focus of 0.15.1 has been to clean the code. Specially the support for dates and times, and the programming interface of configuration handlers, has been improved. Credits: - Hervé Cauwelier contributed the Forum and Wiki objects, and worked to improve the user's experience; - J. David Ibáñez added the contact and forgotten password forms, and worked on the user interface and cleaning the source code; - Sylvain Taverne fixed the Dublin Core schema. Resources - Download http://download.ikaaro.org/itools/itools-0.15.1.tar.gz Home http://www.ikaaro.org/itools Mailing list http://mail.ikaaro.org/mailman/listinfo/itools Bug Tracker http://bugs.ikaaro.org/ -- J. David Ibáñez Itaapy http://www.itaapy.com Tel +33 (0)1 42 23 67 45 9 rue Darwin, 75018 Paris Fax +33 (0)1 53 28 27 88 -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
[ANN] Aspen 0.7 -- WSGI + filesystem = sweet webserver
Greetings, program! I've just released Aspen 0.7. Aspen is a Python webserver, and this is the first version to be used in production. As such, I'm announcing it generally as well as to the Web-SIG. This release is about making Aspen easy to configure, and making that configuration easy to get to from your WSGI modules. I'm pleased with the result, and would love to hear your feedback. Also, allow me to thank the following for being Aspen's first contributors: * Giorgi Lekishvili, for initial optimization work * Maciek Starzyk, for keeping us honest on Windows * Vasilis Dimos, for providing benchmarks * alefnula, for feedback on supporting Range requests Downloads, docs, and links are here: http://www.zetadev.com/software/aspen/ Thanks! yours, Chad Whitacre http://www.zetadev.com/ - FOSS http://tech.whit537.org/ - blog -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: Class list of a module
At Monday 15/1/2007 04:27, you wrote: I want to get all classes of a module in a list. I wrote this code but I wonder if there's not a simpler solution import inspect def getClassList(aModule): return [getattr(aModule, attName) \ for attName in aModule.__dict__ \ if inspect.isclass(getattr(aModule, attName))] Looks rather simple to me... Anyway, you could avoid calling getattr twice, if you iterate over vars(aModule).itervalues() def getClassList(aModule): return [cls for cls in vars(aModule).itervalues() if inspect.isclass(cls)] (And note that there is no need for using \ at the line ends, because of the []) -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: How naive is Python?
[EMAIL PROTECTED] wrote:
John How naive (in the sense that compiler people use the term) is the
John current Python system? For example:
John def foo() :
John s = This is a test
John return(s)
John s2 = foo()
John How many times does the string get copied?
Never. s and s2 just refer to the same object (strings are immutable).
Executing this:
def foo() :
print id(This is a test)
s = This is a test
print id(s)
return(s)
s2 = foo()
print id(s2)
prints the same value three times.
John Or, for example:
John s1 = Test1
John s2 = Test2
John s3 = Test3
John s = s1 + s2 + s3
John Any redundant copies performed, or is that case optimized?
Not optimized. You can see that using the dis module:
4 0 LOAD_CONST 1 ('Test1')
3 STORE_FAST 0 (s1)
5 6 LOAD_CONST 2 ('Test2')
9 STORE_FAST 1 (s2)
6 12 LOAD_CONST 3 ('Test3')
15 STORE_FAST 2 (s3)
7 18 LOAD_FAST0 (s1)
21 LOAD_FAST1 (s2)
24 BINARY_ADD
25 LOAD_FAST2 (s3)
28 BINARY_ADD
29 STORE_FAST 3 (s)
32 LOAD_CONST 0 (None)
35 RETURN_VALUE
The BINARY_ADD opcode creates a new string.
John How about this?
John kcount = 1000
John s = ''
John for i in range(kcount) :
John s += str(i) + ' '
John Is this O(N) or O(N^2) because of recopying of s?
O(N). Here's a demonstration of that:
#!/usr/bin/env python
from __future__ import division
def foo(kcount):
s = ''
for i in xrange(kcount) :
s += str(i) + ' '
import time
for i in xrange(5,25):
t = time.time()
foo(2**i)
t = time.time() - t
print 2**i, t, t/2**i
On my laptop t roughly doubles for each iteration and prints around 5e-06
for t/2**i in all cases.
Sorry, Skip, but I find that very hard to believe. The foo() function
would take quadratic time if it were merely adding on pieces of
constant size -- however len(str(i)) is not a constant, it is
O(log10(i)), so the time should be super-quadratic. Following are the
results I got with Python 2.5, Windows XP Pro, 3.2Ghz Intel dual-core
processor with the last line changed to print i, 2**i, t, t/2**i coz I
can't do log2() in my head :-)
[snip]
18 262144 0.88866486 3.39508005709e-006
19 524288 3.21900010109 6.13975544184e-006
20 1048576 12.296313 1.17273330034e-005
21 2097152 54.25 2.58684158325e-005
22 4194304 229.0 5.45978546143e-005
[k/b interrupt]
Cheers,
John
--
http://mail.python.org/mailman/listinfo/python-list
Re: Class list of a module
Gabriel Genellina: import inspect def getClassList(aModule): return [cls for cls in vars(aModule).itervalues() if inspect.isclass(cls)] This is short enough too: from inspect import isclass getclasses = lambda module: filter(isclass, vars(module).itervalues()) Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: How naive is Python?
Roy Smith [EMAIL PROTECTED] wrote: All of those just move around pointers to the same (interned) string. Correct about the pointers, but the string is not interned: Steven D'Aprano [EMAIL PROTECTED] wrote: s1 = foo() s2 = foo() s1 == s2, s1 is s2 (True, True) So the string This is a test within foo is not copied each time the function is called. However, the string This is a test is duplicated between foo and foo2 (the two functions don't share the same string instance): s3 = foo2() s3 == s1, s3 is s1 (True, False) In this specific example the two functions don't share the same string, but that won't always be the case: if the string had been interned this would have printed (True, True). e.g. Removing all the spaces from the string produces a string which is interned. def foo(): s = Thisisatest return s def foo2(): return Thisisatest s1 = foo() s2 = foo2() s1 is s2 True Bottom line, never make assumptions about when two literal strings will share the same object and when they won't. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python web app. (advice sought)
Duncan Smith wrote: Hello, I find myself in the, for me, unusual (and at the moment unique) position of having to write a web application. I have quite a lot of existing Python code that will form part of the business logic. This relies on 3rd party libraries (such as numpy) which would make porting to e.g. IronPython difficult (I would imagine). I was thinking LAMP (the P standing for Python, of course), particularly as I was originally encouraged to go for open source solutions. The application will provide some basic statistical analyses of data contained in database tables and associated plots (R / matplotlib / graphviz). There will also be some heavier duty Monte Carlo simulation and graphical modelling / MCMC. The user(s) will need to be able to set model parameters; maybe even tinker with model structure, so it will be very interactive (AJAX?). I've had a look at Django, Turbogears and Plone, and at the moment I am torn between Turbogears and Plone. I get the impression that Turbogears will require me to write more non-Python code, but maybe Plone is more than I need (steeper learning curve?). Maybe Turbogears will lead to a more loosely coupled app. than Plone? The disconcerting thing is that others on the project (who won't be developing) have started to talk about a LAMP back end with an IIS front end, .NET, and the benefits of sharepoint. The emphasis is supposed to be on rapid development, and these technologies are supposed to help. But I have no real familiarity with them at all; just Python, C and SQL to any realistic level of competence. Any advice would be greatly appreciated. I have to do much of the statistical work too, so I need to make good choices (and hopefully be able to justify them so nobody else on the project makes inappropriate choices for me). e.g. I don't mind learning Javascript if it doesn't take too long. The physical server will initially be a multiprocessor machine with several GB of RAM. But we also have a cluster (I have no details, I only started the project a week ago). So any advice regarding parallelisation would also be appreciated (or, in fact, any useful advice / pointers at all). Thanks. Duncan I was in a similar boat a while back, needing to make a decision on what to use for our web development. I had worked with Plone previously and found that for our needs it wasn't going to work. Our web development was quite specific and didn't fit ideally into the standard content management realm. I also looked at Django and TurboGears, installing and working with each. I eventually went with Django, and I've really enjoyed working with it. Was a personal choice and I'm sure our development would have been as successful if I'd chosen TurboGears. If you want the strength of persistent layers, MVC, templating etc etc but want to stay away from the heavier frameworks, another possibility is http://webpy.org/. Very simple to implement, lightweight yet still fairly full of features. -- http://mail.python.org/mailman/listinfo/python-list
python and MOV or MPEG
Hi all, does Python support MPEG or MOV videoclips? I couldn't find anything about it online. Thank you, Siggi -- http://mail.python.org/mailman/listinfo/python-list
Re: pygame and python 2.5
Thanks, I'll try that! Siggi Laurent Pointal [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] siggi a écrit : Hi all, when I rtry to install pygame (pygame-1.7.1release.win32-py2.4.exe, the most ciurrent version I found) it requires Python 2.4! Will I really have to uninstall my Python 2.5 and install the old Python 2.4 in order to use pygame? Note: You can have both versions installed, just be sure to use the right one when using pygame (until there is a 2.5 compatible version). -- http://mail.python.org/mailman/listinfo/python-list
Re: Maths error
In article [EMAIL PROTECTED], Tim Roberts [EMAIL PROTECTED] writes: | Hendrik van Rooyen [EMAIL PROTECTED] wrote: | | What I don't know is how much precision this approximation loses when | used in real applications, and I have never found anyone else who has | much of a clue, either. | | I would suspect that this is one of those questions which are simple | to ask, but horribly difficult to answer - I mean - if the hardware has | thrown it away, how do you study it - you need somehow two | different parallel engines doing the same stuff, and comparing the | results, or you have to write a big simulation, and then you bring | your simulation errors into the picture - There be Dragons... | | Actually, this is a very well studied part of computer science called | interval arithmetic. As you say, you do every computation twice, once to | compute the minimum, once to compute the maximum. When you're done, you | can be confident that the true answer lies within the interval. The problem with it is that it is an unrealistically pessimal model, and there are huge classes of algorithm that it can't handle at all; anything involving iterative convergence for a start. It has been around for yonks (I first dabbled with it 30+ years ago), and it has never reached viability for most real applications. In 30 years, it has got almost nowhere. Don't confuse interval methods with interval arithmetic, because you don't need the latter for the former, despite the claims that you do. | For people just getting into it, it can be shocking to realize just how | wide the interval can become after some computations. Yes. Even when you can prove (mathematically) that the bounds are actually quite tight :-) Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
Re: python and MOV or MPEG
siggi wrote: Hi all, does Python support MPEG or MOV videoclips? I couldn't find anything about it online. Weak in googling today? Must have been a rough weekend. There are several options, including pymedia and pygame. Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: Python web app. (advice sought)
On 15 Jan 2007 00:52:33 -0800, Torabisu [EMAIL PROTECTED] wrote: Duncan Smith wrote: Hello, I find myself in the, for me, unusual (and at the moment unique) position of having to write a web application. I have quite a lot of existing Python code that will form part of the business logic. This relies on 3rd party libraries (such as numpy) which would make porting to e.g. IronPython difficult (I would imagine). I was thinking LAMP (the P standing for Python, of course), particularly as I was originally encouraged to go for open source solutions. The application will provide some basic statistical analyses of data contained in database tables and associated plots (R / matplotlib / graphviz). There will also be some heavier duty Monte Carlo simulation and graphical modelling / MCMC. The user(s) will need to be able to set model parameters; maybe even tinker with model structure, so it will be very interactive (AJAX?). I've had a look at Django, Turbogears and Plone, and at the moment I am torn between Turbogears and Plone. I get the impression that Turbogears will require me to write more non-Python code, but maybe Plone is more than I need (steeper learning curve?). Maybe Turbogears will lead to a more loosely coupled app. than Plone? The disconcerting thing is that others on the project (who won't be developing) have started to talk about a LAMP back end with an IIS front end, .NET, and the benefits of sharepoint. The emphasis is supposed to be on rapid development, and these technologies are supposed to help. But I have no real familiarity with them at all; just Python, C and SQL to any realistic level of competence. Any advice would be greatly appreciated. I have to do much of the statistical work too, so I need to make good choices (and hopefully be able to justify them so nobody else on the project makes inappropriate choices for me). e.g. I don't mind learning Javascript if it doesn't take too long. The physical server will initially be a multiprocessor machine with several GB of RAM. But we also have a cluster (I have no details, I only started the project a week ago). So any advice regarding parallelisation would also be appreciated (or, in fact, any useful advice / pointers at all). Thanks. Duncan I was in a similar boat a while back, needing to make a decision on what to use for our web development. I had worked with Plone previously and found that for our needs it wasn't going to work. Our web development was quite specific and didn't fit ideally into the standard content management realm. I also looked at Django and TurboGears, installing and working with each. I eventually went with Django, and I've really enjoyed working with it. Was a personal choice and I'm sure our development would have been as successful if I'd chosen TurboGears. If you want the strength of persistent layers, MVC, templating etc etc but want to stay away from the heavier frameworks, another possibility is http://webpy.org/. Very simple to implement, lightweight yet still fairly full of features. Don't overlook Karrigell either, with a tiny learning curve its always worth consideration, especially if you need rapid development and a web server that will sit on top of your exising .py modules. www.karrigell.com hth :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Boilerplate in rich comparison methods
On 2007-01-13, Steven D'Aprano [EMAIL PROTECTED] wrote: I'm writing a class that implements rich comparisons, and I find myself writing a lot of very similar code. If the calculation is short and simple, I do something like this: class Parrot: def __eq__(self, other): return self.plumage() == other.plumage() def __ne__(self, other): return self.plumage() != other.plumage() def __lt__(self, other): return self.plumage() other.plumage() def __gt__(self, other): return self.plumage() other.plumage() def __le__(self, other): return self.plumage() = other.plumage() def __ge__(self, other): return self.plumage() = other.plumage() Well one thing you could do is write the following class: Comparators = SomeEnumWith(eq, ne, lt, gt, ge, le, ge) class GeneralComparator: def __eq__(self, other): return Comparators.eq in self.__compare__(self, other) def __ne__(self, other): return Comparators.ne in self.__compare__(self, other) def __lt__(self, other): return Comparators.lt in self.__compare__(self, other) def __le__(self, other): return Comparators.le in self.__compare__(self, other) def __gt__(self, other): return Comparators.gt in self.__compare__(self, other) def __ge__(self, other): return Comparators.ge in self.__compare__(self, other) Then write your Parrot class as follows: class Parrot (GeneralComparator): def __compare__(self, other): return a set which defines which comparisons should return true. -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
Re: Python web app. (advice sought)
Tim Williams wrote: On 15 Jan 2007 00:52:33 -0800, Torabisu [EMAIL PROTECTED] wrote: Duncan Smith wrote: Hello, I find myself in the, for me, unusual (and at the moment unique) position of having to write a web application. I have quite a lot of existing Python code that will form part of the business logic. This relies on 3rd party libraries (such as numpy) which would make porting to e.g. IronPython difficult (I would imagine). I was thinking LAMP (the P standing for Python, of course), particularly as I was originally encouraged to go for open source solutions. The application will provide some basic statistical analyses of data contained in database tables and associated plots (R / matplotlib / graphviz). There will also be some heavier duty Monte Carlo simulation and graphical modelling / MCMC. The user(s) will need to be able to set model parameters; maybe even tinker with model structure, so it will be very interactive (AJAX?). I've had a look at Django, Turbogears and Plone, and at the moment I am torn between Turbogears and Plone. I get the impression that Turbogears will require me to write more non-Python code, but maybe Plone is more than I need (steeper learning curve?). Maybe Turbogears will lead to a more loosely coupled app. than Plone? The disconcerting thing is that others on the project (who won't be developing) have started to talk about a LAMP back end with an IIS front end, .NET, and the benefits of sharepoint. The emphasis is supposed to be on rapid development, and these technologies are supposed to help. But I have no real familiarity with them at all; just Python, C and SQL to any realistic level of competence. Any advice would be greatly appreciated. I have to do much of the statistical work too, so I need to make good choices (and hopefully be able to justify them so nobody else on the project makes inappropriate choices for me). e.g. I don't mind learning Javascript if it doesn't take too long. The physical server will initially be a multiprocessor machine with several GB of RAM. But we also have a cluster (I have no details, I only started the project a week ago). So any advice regarding parallelisation would also be appreciated (or, in fact, any useful advice / pointers at all). Thanks. Duncan I was in a similar boat a while back, needing to make a decision on what to use for our web development. I had worked with Plone previously and found that for our needs it wasn't going to work. Our web development was quite specific and didn't fit ideally into the standard content management realm. I also looked at Django and TurboGears, installing and working with each. I eventually went with Django, and I've really enjoyed working with it. Was a personal choice and I'm sure our development would have been as successful if I'd chosen TurboGears. If you want the strength of persistent layers, MVC, templating etc etc but want to stay away from the heavier frameworks, another possibility is http://webpy.org/. Very simple to implement, lightweight yet still fairly full of features. Don't overlook Karrigell either, with a tiny learning curve its always worth consideration, especially if you need rapid development and a web server that will sit on top of your exising .py modules. www.karrigell.com hth :) Hmm, thanks for the link on Karrigell. Never heard of it till now, quite nice... -- http://mail.python.org/mailman/listinfo/python-list
Re: getting the name of hyperlinks in a file
Hi, I guess you should take a look at BeautifulSoup (http://www.crummy.com/software/BeautifulSoup/). And take a clooser look at the findAll method. http://www.crummy.com/software/BeautifulSoup/documentation.html#The%20basic%20find%20method %20findAll(name,%20attrs,%20recursive,%20text,%20limit,%20**kwargs) Regards, Laurent CSUIDL PROGRAMMEr wrote: folks, I am trying to write a script that would open a download server and download all the files and store them in a list for example Download server is http://download.fedora.redhat.com/pub/fedora/linux/core/updates/5/SRPMS/ is there any way this can be done in python?? -- http://mail.python.org/mailman/listinfo/python-list
Problem with win32pipe.popen2
I'm trying to understand how popen2 works. Found in this group, that popen2.popen2 can cause trouble so i chose win32pipe.popen2. have a look a the listing of 2 files: ekmain.py: ** import win32pipe (stdin1, stdout1) = win32pipe.popen2(test1.py) stdin1.write(1\n) print stdout1.readlines() # This will print the result. ** test1.py: ** a=raw_input(a=) print ***a=,a print finished! ** i do not understand, why ekmain.py produces only following output: ['a='] why is the stdin1.write(1\n) command ignored? i tried to find an answer in this group by searching through existing article, but i had no success. tanks for you help! ernst p.s.: i working with python 2.3 on win2000. -- http://mail.python.org/mailman/listinfo/python-list
Mail System Error - Returned Mail
The original message was received at Mon, 15 Jan 2007 12:44:10 +0200 from adobe.com [142.121.237.185] - The following addresses had permanent fatal errors - python-list@python.org - Transcript of session follows - ... while talking to 184.246.123.62: 554 python-list@python.org... Message is too large 554 python-list@python.org... Service unavailable -- http://mail.python.org/mailman/listinfo/python-list
Problem with findinf wx modules solved
I included the ...\wxDemos path in PYTHONPATH. Everthing fine now! siggi [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] Tim Roberts wrote: when I do sys.path in IDLE (winXP), i get a horrendously long list of paths, paths I may have used during a lot of trials and errors. How can I clean up sys.path? I mean, trim it of unnecessary paths? What do mean by used during a lot of trials and errors? sys.path is recreated from scratch every time Python starts. It doesn't accumulate over time, other than from new packages that you install. -- Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. Sorry Tim, my statement was not correct, due to my inexperience with Python. And sorry, too, for my somewhat lengthy reply: After having had inspected my current sys.path... ['C:\\Documents and Settings\\User\\My Documents\\My Python files', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\Lib\\idlelib', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\python25.zip', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\DLLs', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\plat-win', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\lib-tk', 'C:\\Documents and Settings\\User\\My Documents\\Python25', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\site-packages', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\site-packages\\PIL', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\site-packages\\win32', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\site-packages\\win32\\lib', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\site-packages\\Pythonwin', 'C:\\Documents and Settings\\User\\My Documents\\Python25\\lib\\site-packages\\wx-2.8-msw-ansi'] or in plain DOS: C:\Documents and Settings\User\My Documents\My Python files C:\Documents and Settings\User\My Documents\Python25\Lib\idlelib C:\Documents and Settings\User\My Documents\Python25\python25.zip C:\Documents and Settings\User\My Documents\Python25\DLLs C:\Documents and Settings\User\My Documents\Python25\lib C:\Documents and Settings\User\My Documents\Python25\lib\plat-win C:\Documents and Settings\User\My Documents\Python25\lib\lib-tk C:\Documents and Settings\User\My Documents\Python25 C:\Documents and Settings\User\My Documents\Python25\lib\site-packages C:\Documents and Settings\User\My Documents\Python25\lib\site-packages\PIL C:\Documents and Settings\User\My Documents\Python25\lib\site-packages\win32 C:\Documents and Settings\User\My Documents\Python25\lib\site-packages\win32\lib C:\Documents and Settings\User\My Documents\Python25\lib\site-packages\Pythonwin C:\Documents and Settings\User\My Documents\Python25\lib\site-packages\wx-2.8-msw-ansi ...it just looked horrible to me at first sight! If I interpret your explanation correctly, all these paths are necessary, and not relics of previous installations and deinstallations. What puzzles me, though, is, that e.g., when I run the wxPython application AnalogClock.py with IDLE or in the command line , this works only in the directory ...\My Python files\wxDemos\ . This directory contains all files and folders from the original \wx-2.8-msw-ansi\demos\). When I copy AnalogClock.py to ...\My Python Files\ , nothing happens after running it with IDLE or in the command line. Appending 'C:\Documents and Settings\User\My Documents\My Python files\wxDemos ' to the sys.path does not help either. Thinking that I am clever, I changed my sys.path with sclicing and concatenation such that my sys.path starts with 'C:\Documents and Settings\User\My Documents\My Python files', 'C:\Documents and Settings\User\My Documents\My Python files\wxDemos'. Now \wxDemos\ is being searched very early. ... no way! After running AnalogClock.py again, this error message appears: -- Traceback (most recent call last): File C:\Documents and Settings\My Documents\My Python files\wxAnalogClock.py, line 14, in module import wx ImportError: No module named wx. -- Very strange! Because all this wx stuff IS IN the directory 'C:\Documents and Settings\User\My Documents\My Python files\wxDemos'. And AnalogClock.py does work when residing in that directory. Can you help me again? Thanks, siggi P.S. On another PC where the python program is in c:\programs\python25\, same as above! -- http://mail.python.org/mailman/listinfo/python-list
Re: Class list of a module
Looks rather simple to me... Anyway, you could avoid calling getattr twice, if you iterate over vars(aModule).itervalues() def getClassList(aModule): return [cls for cls in vars(aModule).itervalues() if inspect.isclass(cls)] (And note that there is no need for using \ at the line ends, because of the []) That's what I've been looking for. Thank you. Regards, Laurent Laffont -- http://mail.python.org/mailman/listinfo/python-list
Re: Python web app. (advice sought)
Duncan Smith wrote: Hello, I find myself in the, for me, unusual (and at the moment unique) position of having to write a web application. I have quite a lot of existing Python code that will form part of the business logic. This relies on 3rd party libraries (such as numpy) which would make porting to e.g. IronPython difficult (I would imagine). I was thinking LAMP (the P standing for Python, of course), particularly as I was originally encouraged to go for open source solutions. The application will provide some basic statistical analyses of data contained in database tables and associated plots (R / matplotlib / graphviz). There will also be some heavier duty Monte Carlo simulation and graphical modelling / MCMC. The user(s) will need to be able to set model parameters; maybe even tinker with model structure, so it will be very interactive (AJAX?). I've had a look at Django, Turbogears and Plone, and at the moment I am torn between Turbogears and Plone. I assume it will be an application with few users and no particular need for security. Read PEP 333, use the wsgiref server which is in the standard library (starting from Python 2.5+), have a look at Paste and write your own solution. At the least this is the way I did it. Michele Simionato -- http://mail.python.org/mailman/listinfo/python-list
Re: python and MOV or MPEG
Diez B. Roggisch wrote: siggi wrote: Hi all, does Python support MPEG or MOV videoclips? I couldn't find anything about it online. Weak in googling today? Must have been a rough weekend. There are several options, including pymedia and pygame. Diez Thanks, Diez. I forgot to mention that I am learning Python with python 2.5 on WinXP. And both pymedia and pygame require somewhat older versions of python, 1.3 and 2.4, respectively. And the updated binaries are still in the offing. I was naive enough to think MPEG could be done using modules already existing. siggi -- http://mail.python.org/mailman/listinfo/python-list
Re: python and MOV or MPEG
On 1/15/07, Diez B. Roggisch [EMAIL PROTECTED] wrote: siggi wrote: Hi all, does Python support MPEG or MOV videoclips? I couldn't find anything about it online. Weak in googling today? Must have been a rough weekend. There are several options, including pymedia and pygame. Diez -- http://mail.python.org/mailman/listinfo/python-list Here is a way how you can do it! http://godsongera.blogspot.com/2006/12/play-mpeg-file-with-python.html -- Godson Gera, http://godson.auroinfo.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Python web app. (advice sought)
Duncan Smith a écrit : Hello, I find myself in the, for me, unusual (and at the moment unique) position of having to write a web application. I have quite a lot of existing Python code that will form part of the business logic. This relies on 3rd party libraries (such as numpy) which would make porting to e.g. IronPython difficult (I would imagine). I was thinking LAMP (the P standing for Python, of course), particularly as I was originally encouraged to go for open source solutions. The application will provide some basic statistical analyses of data contained in database tables and associated plots (R / matplotlib / graphviz). There will also be some heavier duty Monte Carlo simulation and graphical modelling / MCMC. The user(s) will need to be able to set model parameters; maybe even tinker with model structure, so it will be very interactive (AJAX?). I've had a look at Django, Turbogears and Plone, and at the moment I am torn between Turbogears and Plone. I get the impression that Turbogears will require me to write more non-Python code, ??? but maybe Plone is more than I need (steeper learning curve?). Maybe Turbogears will lead to a more loosely coupled app. than Plone? Plone is nice for content management (well, it's a CMS, isn't it ?), but I certainly wouldn't choose it for the kind off application you are describing. A simpler, lighter MVC framework would be far more appropriate IMHO. Turbogears may be a good choice, but you may also want to have a look at web.py and Pylons. The disconcerting thing is that others on the project (who won't be developing) have started to talk about a LAMP back end with an IIS front end, .NET, and the benefits of sharepoint. My my my... The emphasis is supposed to be on rapid development, and these technologies are supposed to help. But I have no real familiarity with them at all; just Python, C and SQL to any realistic level of competence. Then go for the simplest thing. My 2 cents... -- http://mail.python.org/mailman/listinfo/python-list
Re: indentation in python
Dan Bishop wrote: On Jan 13, 8:49 pm, lee [EMAIL PROTECTED] wrote: Can anyone tell me the basics about indentation in python..how we use it in loops and constructs..etc It's just like indentation in other languages, except that it's syntactically required. The indent rule is minimal: - indent the following line after a colon (:) - dedent when you leave that block to the level you wish to continue - you cannot have an empty block; use pass or None for an otherwise empty block - as always: have fun! -- http://mail.python.org/mailman/listinfo/python-list
Conditional validation of documents (ignoring IDREFs)
I'm working with one extra large XML file which consists of many parts. Every part can be considered a stand-alone document with references to other parts (IDs and IDREFs). I would like to be able to validate every such part against a DTD but ignoring errors which arise from broken references. Can I do it with pyxml? Thanks in advance! -- http://mail.python.org/mailman/listinfo/python-list
Re: python and MOV or MPEG
siggi wrote: Thanks, Diez. I forgot to mention that I am learning Python with python 2.5 on WinXP. And both pymedia and pygame require somewhat older versions of python, 1.3 and 2.4, respectively. 1.3? I've found both for 2.4, and in one site's forum some guy offers windows binaries for 2.5. Regards, Björn -- BOFH excuse #303: fractal radiation jamming the backbone -- http://mail.python.org/mailman/listinfo/python-list
Re: python and MOV or MPEG
Bjoern Schliessmann wrote: 1.3? I've found both for 2.4, and in one site's forum some guy offers windows binaries for 2.5. The links, please! Thank you, siggi Bjoern Schliessmann [EMAIL PROTECTED] schrieb im Newsbeitrag news:[EMAIL PROTECTED] siggi wrote: Thanks, Diez. I forgot to mention that I am learning Python with python 2.5 on WinXP. And both pymedia and pygame require somewhat older versions of python, 1.3 and 2.4, respectively. 1.3? I've found both for 2.4, and in one site's forum some guy offers windows binaries for 2.5. Regards, Björn -- BOFH excuse #303: fractal radiation jamming the backbone -- http://mail.python.org/mailman/listinfo/python-list
Re: Python web app. (advice sought)
Duncan Smith wrote: I've had a look at Django, Turbogears and Plone, and at the moment I am torn between Turbogears and Plone. I Plone is not suited for the type of application you are building (as others have pointed out in this thread). Take a second look at TurboGears (or CherryPy for that matter). You might have discounted Django a bit too soon. It has the best documentation and it is the most consistent framework. You might end up bringing in new people into your project and that will go a lot easier when you have good docs to help them as well. i. -- http://mail.python.org/mailman/listinfo/python-list
check if there is data in stdin without blocking
Hi, Is there a way ? ... select ? hg -- http://mail.python.org/mailman/listinfo/python-list
Re: How naive is Python?
John Sorry, Skip, but I find that very hard to believe. The foo() John function would take quadratic time if it were merely adding on John pieces of constant size -- however len(str(i)) is not a constant, John it is O(log10(i)), so the time should be John super-quadratic. Sorry, I should have pointed out that I'm using the latest version of Python. I believe += for strings has been optimized to simply extend s when there is only a single reference to it. Skip -- http://mail.python.org/mailman/listinfo/python-list
Default event handlers in wxPython
Hi all I'm writing my first wxPython app and am having a problem with event handlers. I've set up a multi-part status bar and would like all the tooltips, menu help strings etc. to go into the second part of it. Is there some easy way of doing this? I've not found one, so have set up the following for the menu: self.Bind(wx.EVT_MENU_HIGHLIGHT, self.OnMenuHighlight) def OnMenuHighlight(self, event): self.SetStatusText(event.GetEventObject().GetHelpString(event.GetMenuId()), 1) ...this works fine. I've tried to set up the same for the toolbar: self.Bind(wx.EVT_TOOL_ENTER, self.OnToolbarHighlight) def OnToolbarHighlight(self, event): self.SetStatusText(event.GetEventObject().GetToolLongHelp(event.GetSelection()), 1) ...and this doesn't work. Well, it puts the text in the second part of the toolbar as requested, but the default handler is still being called and this messes up the first part of the toolbar which I want it to leave alone. How do I completely override the default handler for the toolbar? This method worked fine for menus and I'm a bit stuck. (ignore the indentation on the above examples - I know it's wrong, but long lines and usenet don't mix) -- I'm at CAMbridge, not SPAMbridge -- http://mail.python.org/mailman/listinfo/python-list
Re: check if there is data in stdin without blocking
hg wrote: Hi, Is there a way ? ... select ? hg PS: import sys import select l_r = select.select([sys.stdin],[],[],0) gives me: File select.py, line 2, in ? import select File /home/philippe/Desktop/select.py, line 4, in ? l_r = select.select([sys.stdin],[],[],0) TypeError: 'module' object is not callable -- http://mail.python.org/mailman/listinfo/python-list
Re: check if there is data in stdin without blocking
hg a écrit : hg wrote: Hi, Is there a way ? ... select ? hg PS: import sys import select l_r = select.select([sys.stdin],[],[],0) gives me: File select.py, line 2, in ? import select File /home/philippe/Desktop/select.py, line 4, in ? l_r = select.select([sys.stdin],[],[],0) TypeError: 'module' object is not callable Wont work under Windows: help(select.select) ...zip... *** IMPORTANT NOTICE *** On Windows, only sockets are supported; on Unix, all file descriptors. If under Unix, maybe sys.stdin.fileno() is a valid descriptor for select. Just test it. And if under Windows, you may take a look at 22.1 msvcrt - Useful routines from the MS VC++ runtime 22.1.2 Console I/O kbhit( ) - Return true if a keypress is waiting to be read. -- http://mail.python.org/mailman/listinfo/python-list
Re: check if there is data in stdin without blocking
Laurent Pointal wrote: hg a écrit : hg wrote: Hi, Is there a way ? ... select ? hg PS: import sys import select l_r = select.select([sys.stdin],[],[],0) gives me: File select.py, line 2, in ? import select File /home/philippe/Desktop/select.py, line 4, in ? l_r = select.select([sys.stdin],[],[],0) TypeError: 'module' object is not callable Wont work under Windows: help(select.select) ...zip... *** IMPORTANT NOTICE *** On Windows, only sockets are supported; on Unix, all file descriptors. If under Unix, maybe sys.stdin.fileno() is a valid descriptor for select. Just test it. And if under Windows, you may take a look at 22.1 msvcrt - Useful routines from the MS VC++ runtime 22.1.2 Console I/O kbhit( ) - Return true if a keypress is waiting to be read. Well I'm testing under Linux but need support under Windows ... is there any way to poll stdin somehow under both plateform ? thanks, hg -- http://mail.python.org/mailman/listinfo/python-list
Re: check if there is data in stdin without blocking
hg wrote: import select [...] File /home/philippe/Desktop/select.py, line 4, in ? Consider which module Python is trying to import here: the standard library select module or your own program? Paul -- http://mail.python.org/mailman/listinfo/python-list
__getattr__ equivalent for a module
Hi,
in any python class it is possible to define __getattr__ method so that if we
try to get some value of not actually exists instance attribute, we can get
some default value.
For example:
class MyClass:
def __getattr__(self, attname):
if attname.startswith('a'):
return *
i = MyClass()
...
i.aValue # it gives * if i.aValue will not be set before this call
i need to define the same behavior for a module:
import mymodule
mymodule.anyattribute
or
from mymodule import anyattribute
anyattribute is not actually defined in the module, but gives some attribute
of the module
so my question is: how to tune up a module get default attribute if we try to
get access to not actually exists attribute of a module?
(python 2.4 or 2.2)
many thanks for help.
--
Maksim Kasimov
--
http://mail.python.org/mailman/listinfo/python-list
Re: Conflicting needs for __init__ method
On Jan 14, 7:49 pm, Ziga Seilnacht [EMAIL PROTECTED] wrote: Mark wrote:[a lot of valid, but long concerns about types that return an object of their own type from some of their methods] I think that the best solution is to use an alternative constructor in your arithmetic methods. That way users don't have to learn about two different factories for the same type of objects. It also helps with subclassing, because users have to override only a single method if they want the results of arithmetic operations to be of their own type. Aha. I was wondering whether __new__ might appear in the solution somewhere, but couldn't figure out how that would work; I'd previously only ever used it for its advertised purpose of subclassing immutable types. Hope this helps, It helps a lot. Thank you. Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: __getattr__ equivalent for a module
Maksim Kasimov wrote: so my question is: how to tune up a module get default attribute if we try to get access to not actually exists attribute of a module? You could wrap it in an object, but that's a bit of a hack. import sys class Foo(object): def __init__(self, wrapped): self.wrapped = wrapped def __getattr__(self, name): try: return getattr(self.wrapped, name) except AttributeError: return 'default' sys.modules[__name__] = Foo(sys.modules[__name__]) -- http://mail.python.org/mailman/listinfo/python-list
Re: Conflicting needs for __init__ method
On Jan 14, 10:43 pm, Steven D'Aprano [EMAIL PROTECTED] wrote: On Sun, 14 Jan 2007 15:32:35 -0800, dickinsm wrote: (You could include the normalization in __init__, but that's wasteful Is it really? Have you measured it or are you guessing? Is it more or less wasteful than any other solution? Just guessing :). But when summing the reciprocals of the first 2000 positive integers, for example, with: sum((Rational(1, n) for n in range(1, 2001)), Rational(0)) the profile module tells me that the whole calculation takes 8.537 seconds, 8.142 of which are spent in my gcd() function. So it seemed sensible to eliminate unnecessary calls to gcd() when there's an easy way to do so. def __copy__(self): cls = self.__class__ obj = cls.__new__(cls) obj.numerator = self.numerator obj.denominator = self.denominator return obj Thank you for this. Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: check if there is data in stdin without blocking
Paul Boddie wrote: hg wrote: import select [...] File /home/philippe/Desktop/select.py, line 4, in ? Consider which module Python is trying to import here: the standard library select module or your own program? Paul Argh ;-) thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: How naive is Python?
John Sorry, Skip, but I find that very hard to believe. The foo() John function would take quadratic time if it were merely adding on John pieces of constant size -- however len(str(i)) is not a constant, John it is O(log10(i)), so the time should be super-quadratic. me Sorry, I should have pointed out that I'm using the latest version me of Python. I believe += for strings has been optimized to simply me extend s when there is only a single reference to it. Actually, it isn't until I work my way back to 2.3 that I start to see quadratic behavior: % python2.6 strcopy.py 32 0.00022292137146 6.96629285812e-06 64 0.000907897949219 1.41859054565e-05 128 0.000649929046631 5.0775706768e-06 256 0.00111794471741 4.36697155237e-06 512 0.00260806083679 5.09386882186e-06 1024 0.00437998771667 4.27733175457e-06 2048 0.00921607017517 4.50003426522e-06 4096 0.0191979408264 4.68699727207e-06 8192 0.0694131851196 8.47328919917e-06 16384 0.0976829528809 5.96209429204e-06 32768 0.194766998291 5.94381708652e-06 % python2.5 strcopy.py 32 0.000439167022705 1.37239694595e-05 64 0.000303030014038 4.73484396935e-06 128 0.000631809234619 4.93600964546e-06 256 0.00112318992615 4.38746064901e-06 512 0.00279307365417 5.45522198081e-06 1024 0.00446391105652 4.35928814113e-06 2048 0.00953102111816 4.65381890535e-06 4096 0.0198018550873 4.83443727717e-06 8192 0.175454854965 2.14178289752e-05 16384 0.103327989578 6.30663998891e-06 32768 0.191411972046 5.84142981097e-06 % python2.4 strcopy.py 32 0.000230073928833 7.18981027603e-06 64 0.000307083129883 4.79817390442e-06 128 0.00114107131958 8.91461968422e-06 256 0.00116014480591 4.53181564808e-06 512 0.00231313705444 4.51784580946e-06 1024 0.00459003448486 4.4824162e-06 2048 0.00974178314209 4.75673004985e-06 4096 0.019122838974 4.66866185889e-06 8192 0.0717267990112 8.75571276993e-06 16384 0.112125873566 6.84362021275e-06 32768 0.188065052032 5.73928991798e-06 % python2.3 strcopy.py 32 0.000223875045776 6.99609518051e-06 64 0.000385999679565 6.03124499321e-06 128 0.000766038894653 5.98467886448e-06 256 0.00154304504395 6.02751970291e-06 512 0.00309181213379 6.03869557381e-06 1024 0.0065929889679 6.43846578896e-06 2048 0.0147500038147 7.20215030015e-06 4096 0.14589214325 3.56181990355e-05 8192 0.778324127197 9.50102694333e-05 16384 3.20213103294 0.000195442567929 32768 14.7389230728 0.000449796236353 % python2.2 strcopy.py 32 0.00031590461731 9.87201929092e-06 64 0.000494003295898 7.71880149841e-06 128 0.00090217590332 7.04824924469e-06 256 0.00173211097717 6.76605850458e-06 512 0.00362610816956 7.08224251866e-06 1024 0.00711607933044 6.94929622114e-06 2048 0.0158200263977 7.7246222645e-06 4096 0.152237892151 3.71674541384e-05 8192 0.89648604393 0.000109434331534 16384 3.14483094215 0.000191945247934 32768 13.3367011547 0.000407003819419 Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: __getattr__ equivalent for a module
Hi Leif, many thanks - it works Leif K-Brooks wrote: Maksim Kasimov wrote: so my question is: how to tune up a module get default attribute if we try to get access to not actually exists attribute of a module? You could wrap it in an object, but that's a bit of a hack. import sys class Foo(object): def __init__(self, wrapped): self.wrapped = wrapped def __getattr__(self, name): try: return getattr(self.wrapped, name) except AttributeError: return 'default' sys.modules[__name__] = Foo(sys.modules[__name__]) -- Maksim Kasimov -- http://mail.python.org/mailman/listinfo/python-list
Looking for Job
Hi, Any one looking for job.. I need someone good at phyton to do black box and white box testing Contact me at [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
catching signals in an object
Hi, I need to catch a signal SIGUSR1 in an object ... and I need the signal def that traps is to access the object context ... is that possible ? (*nix and windows) ex: class test: def __init__(self): self.Set_Signal() def Set_Signal(self): import signal signal.signal(..., Func) def Func(.): #I need to get access to self or can signal.signal take a method as param ? Thanks hg -- http://mail.python.org/mailman/listinfo/python-list
Re: How naive is Python?
[EMAIL PROTECTED] wrote: John Sorry, Skip, but I find that very hard to believe. The foo() John function would take quadratic time if it were merely adding on John pieces of constant size -- however len(str(i)) is not a constant, John it is O(log10(i)), so the time should be John super-quadratic. Sorry, I should have pointed out that I'm using the latest version of Python. I believe += for strings has been optimized to simply extend s when there is only a single reference to it. I'd heard that, but wasn't sure. That's the kind of answer I was looking for. That kind of optimization is a huge win. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: catching signals in an object
hg wrote: Hi, I need to catch a signal SIGUSR1 in an object ... and I need the signal def that traps is to access the object context ... is that possible ? (*nix and windows) ex: class test: def __init__(self): self.Set_Signal() def Set_Signal(self): import signal signal.signal(..., Func) def Func(.): #I need to get access to self or can signal.signal take a method as param ? Just do it! Python is a functional language. You have access to self (search for the term closure) and self.method is bound - thus a 'function' objects are nothing special in Python. Robert -- http://mail.python.org/mailman/listinfo/python-list
can't get import to work!
I am brand new to jython/python. I want to use my own Java class from within a Jython script. In Java, I created a class called Fubar and put this in a jar file called testit.jar. The Fubar class is in the just.for.fun package and this path shows up in the testit.jar file. I then modified the jython.bat file (I'm using windows) to include the testit.jar file in the classpath. When jython starts from the command line, it notices testit.jar and generates some cache information. Next I want to use the Fubar class in a jython script. I start jython from the command line and type: from just.for.fun import Fubar This doesn't work. The following error is displayed: ImportError: No module named for I also try import just.for.fun.Fubar This gives the same error. I can enter import java.util.HashMap and other such imports and these work. Can someone please tell me what I could be doing wrong ? Thanks, Check out the new AOL. Most comprehensive set of free safety and security tools, free access to millions of high-quality videos from across the web, free AOL Mail and more. -- http://mail.python.org/mailman/listinfo/python-list
Segfault with tktreectrl on python-2.5 on linux
Hello,
I use the tktreectrl Tk extension (http://tktreectrl.sourceforge.net)
through the python wrapper module
(http://klappnase.zexxo.net/TkinterTreectrl/index.html).
With python-2.5 it seems that each time some text is inserted into the
treectrl widget a segfault occurs (on linux, on windows2000 it seemed
to work).
Some people sent me mail describing the same problem, so I think it is
not a problem with my installation of python-2.5. The treectrl widget
itself works well when running from Tcl or from python2.4, so i suspect
that it is a bug in python-2.5.
Below the output from gdb when running the dirtree demo from the
TkinterTreectrl package:
(gdb) run
Starting program: /usr/local/bin/python2.5
/home/pingu/projekte/TkinterTreectrl/TkinterTreectrl-0.6/demo/dirtree.py
[Thread debugging using libthread_db enabled]
[New Thread -1209842944 (LWP 21831)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1209842944 (LWP 21831)]
block_alloc (b=0x1, size=16) at Python/pyarena.c:109
109 if (b-ab_offset + size b-ab_size) {
(gdb) bt
#0 block_alloc (b=0x1, size=16) at Python/pyarena.c:109
#1 0x080d829e in PyArena_Malloc (arena=0x82b2790, size=16) at
Python/pyarena.c:192
#2 0x081129ca in Ellipsis (arena=0x10) at Python/Python-ast.c:1764
#3 0xb77731ef in DisplayProcText () from
/usr/lib/treectrl2.2/libtreectrl2.2.so
Any ideas?
Regards
Michael
--
http://mail.python.org/mailman/listinfo/python-list
compile your python programs with rpython
The pypy'ers have written a brief description on using rpython to create standalone executables: http://codespeak.net/pypy/dist/pypy/doc/standalone-howto.html This is definately worth playing around with, it's very nice writing (r)python code that gets executed as if it were c code. Simon. -- http://mail.python.org/mailman/listinfo/python-list
Re: check if there is data in stdin without blocking
At Monday 15/1/2007 05:55, hg wrote: Well I'm testing under Linux but need support under Windows ... is there any way to poll stdin somehow under both plateform ? I think you may want this portable getch function: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/134892 -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: compile your python programs with rpython
Simon Burton wrote: The pypy'ers have written a brief description on using rpython to create standalone executables: http://codespeak.net/pypy/dist/pypy/doc/standalone-howto.html This is definately worth playing around with, it's very nice writing (r)python code that gets executed as if it were c code. Needless to say, RPython code has some restrictions over normal Python code. Regards, Björn -- BOFH excuse #317: Internet exceeded Luser level, please wait until a luser logs off before attempting to log back on. -- http://mail.python.org/mailman/listinfo/python-list
Re: Looking for Job
[EMAIL PROTECTED] wrote: Any one looking for job.. I need someone good at phyton Sorry, you'll only sporadically find people competent with plants here. Regards, Björn -- BOFH excuse #83: Support staff hung over, send aspirin and come back LATER. -- http://mail.python.org/mailman/listinfo/python-list
Re: How can I integrate RPC with WSGI ???
வினோத் a écrit : How can I integrate RPC You mean xmlrpc or Soap ? with WSGI ??? is any methods for it?? What's your problem exactly ? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write code to get focuse the application which is open from server
Dennis, I am sorry that was a typing error. I try like that app.Print.OK.Click() but it was not working. The printer window was not IdentifiedIs their any method I can use to achive the same goal. How the window title was used as class name?. Could you please help me to solve this problem. thanks this is the error meassage Traceback (most recent call last): File C:\Python24\test1.py, line 10, in -toplevel- app.Print.Ok.CloseClick() File c:\python24\pywinauto\pywinauto\application.py, line 237, in __getattr__ ctrls = _resolve_control( File c:\python24\pywinauto\pywinauto\application.py, line 854, in _resolve_control ctrl = _get_ctrl(criteria) File c:\python24\pywinauto\pywinauto\application.py, line 622, in _get_ctrl dialog = controls.WrapHandle( File c:\python24\pywinauto\pywinauto\findwindows.py, line 62, in find_window windows = find_windows(**kwargs) File c:\python24\pywinauto\pywinauto\findwindows.py, line 177, in find_windows windows = findbestmatch.find_best_control_matches( File c:\python24\pywinauto\pywinauto\findbestmatch.py, line 483, in find_best_control_matches raise MatchError(items = name_control_map.keys(), tofind = search_text) MatchError: Could not find 'Print' in '['', u'Transparent Windows Client0', u'Transparent Windows Client2', u'Transparent Windows Client1', u'Print - Remote', u'Transparent Windows Client', u'Print - RemoteTransparent Windows Client']' This is the code import sys import time import application app = application.Application() qi=app.window_(title_re = .*ArcView.*) time.sleep(2) qi.TypeKeys(%FP) time.sleep(2) app.Print.Ok.CloseClick() Dennis Lee Bieber wrote: On 14 Jan 2007 21:11:35 -0800, vithi [EMAIL PROTECTED] declaimed the following in comp.lang.python: my code goes like that goes like? Don't type similarities from memory -- cutpaste the actual code (or, preferably, a stripped down version that you've actually run) that shows the behavior in question. app=application.Application() qi = app.window_(title_re = .*arcMap.*) qi.TypeKeys(%FP) app,Print.OK.Click() And what is that last line supposed to be doing. app,anything is two separate objects: an application object, and something called Print with an attribute called OK which itself has a method called Click I suspect, at a minimum, that last line is supposed to be app.Print.OK.Click() ^ period, not -- http://mail.python.org/mailman/listinfo/python-list
Re: How to write code to get focuse the application which is open from server
Dennis, I am sorry that was a typing error. I try like that app.Print.OK.Click() but it was not working. The printer window was not IdentifiedIs their any method I can use to achive the same goal. How the window title was used as class name?. Could you please help me to solve this problem. thanks this is the error meassage Traceback (most recent call last): File C:\Python24\test1.py, line 10, in -toplevel- app.Print.Ok.CloseClick() File c:\python24\pywinauto\pywinauto\application.py, line 237, in __getattr__ ctrls = _resolve_control( File c:\python24\pywinauto\pywinauto\application.py, line 854, in _resolve_control ctrl = _get_ctrl(criteria) File c:\python24\pywinauto\pywinauto\application.py, line 622, in _get_ctrl dialog = controls.WrapHandle( File c:\python24\pywinauto\pywinauto\findwindows.py, line 62, in find_window windows = find_windows(**kwargs) File c:\python24\pywinauto\pywinauto\findwindows.py, line 177, in find_windows windows = findbestmatch.find_best_control_matches( File c:\python24\pywinauto\pywinauto\findbestmatch.py, line 483, in find_best_control_matches raise MatchError(items = name_control_map.keys(), tofind = search_text) MatchError: Could not find 'Print' in '['', u'Transparent Windows Client0', u'Transparent Windows Client2', u'Transparent Windows Client1', u'Print - Remote', u'Transparent Windows Client', u'Print - RemoteTransparent Windows Client']' This is the code import sys import time import application app = application.Application() qi=app.window_(title_re = .*ArcView.*) time.sleep(2) qi.TypeKeys(%FP) time.sleep(2) app.Print.Ok.CloseClick() Dennis Lee Bieber wrote: On 14 Jan 2007 21:11:35 -0800, vithi [EMAIL PROTECTED] declaimed the following in comp.lang.python: my code goes like that goes like? Don't type similarities from memory -- cutpaste the actual code (or, preferably, a stripped down version that you've actually run) that shows the behavior in question. app=application.Application() qi = app.window_(title_re = .*arcMap.*) qi.TypeKeys(%FP) app,Print.OK.Click() And what is that last line supposed to be doing. app,anything is two separate objects: an application object, and something called Print with an attribute called OK which itself has a method called Click I suspect, at a minimum, that last line is supposed to be app.Print.OK.Click() ^ period, not -- http://mail.python.org/mailman/listinfo/python-list
Re: Segfault with tktreectrl on python-2.5 on linux
Hi,
On 2007-01-15, klappnase [EMAIL PROTECTED] wrote:
Some people sent me mail describing the same problem, so I think it is
not a problem with my installation of python-2.5. The treectrl widget
itself works well when running from Tcl or from python2.4, so i suspect
that it is a bug in python-2.5.
Below the output from gdb when running the dirtree demo from the
TkinterTreectrl package:
(gdb) run
Starting program: /usr/local/bin/python2.5
/home/pingu/projekte/TkinterTreectrl/TkinterTreectrl-0.6/demo/dirtree.py
[Thread debugging using libthread_db enabled]
[New Thread -1209842944 (LWP 21831)]
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread -1209842944 (LWP 21831)]
block_alloc (b=0x1, size=16) at Python/pyarena.c:109
109 if (b-ab_offset + size b-ab_size) {
(gdb) bt
#0 block_alloc (b=0x1, size=16) at Python/pyarena.c:109
#1 0x080d829e in PyArena_Malloc (arena=0x82b2790, size=16) at
Python/pyarena.c:192
#2 0x081129ca in Ellipsis (arena=0x10) at Python/Python-ast.c:1764
#3 0xb77731ef in DisplayProcText () from
/usr/lib/treectrl2.2/libtreectrl2.2.so
Any ideas?
Yes. And a solution as well :)
Here is the story:
- libpython2.5.so contains a global symbol Ellipsis; this is
new in 2.5 and came in with the new AST/compiler code
- starting python2.5 loads libpython2.5.so (obviously)
- now you do something like:
tk.call(package, require, tktreectrl)
this loads libtktreectrl2.2.so
- libtktreectrl2.2.so contains a global symbol Ellipsis
- and now disaster happens: references in libtktreectrl2.2.so
to Ellipsis are NOT resolved to the Ellipsis symbol
in libtktreectrl2.2.so but rather to the Ellipsis symbol
in libpython2.5.so
- this is not what you want, but is correct behaviour of
symbol resolution in shared shared libraries (and is
equivalant to the behaviour with static libs btw)
Solutions:
a) convince Python developers to prefix ALL new (wrt. 2.5)
global symbols with a prefix like _PyAST_ or equivalent;
this would be consistent with how it is done anyway,
unfortunately the new AST symbols deviate from this practise
(there are symbols like Assert, If, Then, ...)
or b) apply an equivalent rule to the global symbols in
tktreectrl that are global by accident, i.e. because
of the way the library is structured and built
Best Regards,
Anton
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Re: How to write code to get focuse the application which is open from server
At Monday 15/1/2007 15:53, vithi wrote: I am sorry that was a typing error. I try like that app.Print.OK.Click() but it was not working. The printer window was not IdentifiedIs their any method I can use to achive the same goal. How the window title was used as class name?. Could you please help me to solve this problem. app.Print looks for a window whose title contains the word Print (does it exist?), inside, looks for a control with OK (presumably a button), and sends it a mouse click event. There is a forum specific for pywinauto questions - see its homepage. -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: Type casting a base class to a derived one?
Chris Mellon wrote: On 11 Jan 2007 15:01:48 +0100, Neil Cerutti [EMAIL PROTECTED] wrote: On 2007-01-11, Frederic Rentsch [EMAIL PROTECTED] wrote: If I derive a class from another one because I need a few extra features, is there a way to promote the base class to the derived one without having to make copies of all attributes? class Derived (Base): def __init__ (self, base_object): # ( copy all attributes ) ... This looks expensive. Moreover __init__ () may not be available if it needs to to something else. Thanks for suggestions How does it make sense to cast a base to a derived in your application? I can't figure out any circumstance when you'd need to do this in Python. Upcasting like this is something you do in statically typed languages. I suspect that the OP doesn't really believe dynamic casting works and doesn't want to pass a derived class for some reason. What for? If an instance needs to collect a substantial amount of data and needs to perform a substantial amount of processing in order to analyze that data, and if the appropriate type of the instance depends on the analysis, I thought that the instance might at that point just kind of slip into the appropriate identity. After studying the various helpful suggestions, some of which, like this one, question the wisdom of such an approach, I think I see the light: I'd have a class that does the collecting and the analyzing, or even two classes: one collecting the other analyzing and then, depending on the outcome of the analysis, make the appropriate processor and hand it the data it needs. Right? Thank you all very much for your input. Frederic (OP) -- http://mail.python.org/mailman/listinfo/python-list
Re: check if there is data in stdin without blocking
Gabriel Genellina wrote: At Monday 15/1/2007 05:55, hg wrote: Well I'm testing under Linux but need support under Windows ... is there any way to poll stdin somehow under both plateform ? I think you may want this portable getch function: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/134892 -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas will take a look, thanks. hg -- http://mail.python.org/mailman/listinfo/python-list
Watch log
Hi guys, I've an application that writes a log file. I need to write an application with python that will read this file. I would like wait until a new line will be write in the file. Something like the watch cat Log command on Linux os. How can I check the eof and restart the reading? -- http://mail.python.org/mailman/listinfo/python-list
Re: How naive is Python?
[EMAIL PROTECTED] wrote: John Sorry, Skip, but I find that very hard to believe. The foo() John function would take quadratic time if it were merely adding on John pieces of constant size -- however len(str(i)) is not a constant, John it is O(log10(i)), so the time should be super-quadratic. me Sorry, I should have pointed out that I'm using the latest version me of Python. I believe += for strings has been optimized to simply me extend s when there is only a single reference to it. Sorry, I should have pointed out that you need to read up about time.time() -- what is its resolution on your box? -- and time.clock() and the timeit module. Actually, it isn't until I work my way back to 2.3 that I start to see quadratic behavior: % python2.6 strcopy.py 32 0.00022292137146 6.96629285812e-06 64 0.000907897949219 1.41859054565e-05 128 0.000649929046631 5.0775706768e-06 256 0.00111794471741 4.36697155237e-06 512 0.00260806083679 5.09386882186e-06 1024 0.00437998771667 4.27733175457e-06 2048 0.00921607017517 4.50003426522e-06 4096 0.0191979408264 4.68699727207e-06 8192 0.0694131851196 8.47328919917e-06 16384 0.0976829528809 5.96209429204e-06 32768 0.194766998291 5.94381708652e-06 % python2.5 strcopy.py 32 0.000439167022705 1.37239694595e-05 64 0.000303030014038 4.73484396935e-06 128 0.000631809234619 4.93600964546e-06 256 0.00112318992615 4.38746064901e-06 512 0.00279307365417 5.45522198081e-06 1024 0.00446391105652 4.35928814113e-06 2048 0.00953102111816 4.65381890535e-06 4096 0.0198018550873 4.83443727717e-06 8192 0.175454854965 2.14178289752e-05 16384 0.103327989578 6.30663998891e-06 32768 0.191411972046 5.84142981097e-06 [snip] Your ability to see quadratic behavoiur appears to be impaired by (1) the low resolution and/or erratic nature of time.time() on your system (2) stopping the experiment just before the results become interesting. Try this with the latest *production* release (2.5): C:\junkcat fookount.py def foo(kcount): s = '' for i in xrange(kcount) : s += str(i) + ' ' C:\junkfor /L %n in (10,1,19) do \python25\python -mtimeit -sfrom fookount import foo foo(2**%n) C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**10) 100 loops, best of 3: 1.1 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**11) 100 loops, best of 3: 2.34 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**12) 100 loops, best of 3: 4.79 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**13) 10 loops, best of 3: 9.57 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**14) 10 loops, best of 3: 19.8 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**15) 10 loops, best of 3: 40.7 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**16) 10 loops, best of 3: 82.1 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**17) 10 loops, best of 3: 242 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**18) 10 loops, best of 3: 886 msec per loop C:\junk\python25\python -mtimeit -sfrom fookount import foo foo(2**19) 10 loops, best of 3: 3.21 sec per loop Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Anyone has a nice view_var procedure ?
hello, Is there some handy/ nice manner to view the properties of some variable ? As a newbie, I often want to see want all the properties of a var, and also some corner values (large arrays) etc. Probably it's not so difficult, but I don't see how to distinguish for example between a string and an array. An array has a shape, a string not etc. thanks, Stef Mientki -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie - converting csv files to arrays in NumPy - Matlab vs. Numpy comparison
oyekomova wrote: Thanks to everyone for their excellent suggestions. I was able to acheive the following results with all your suggestions. However, I am unable to cross file size of 6 million rows. I would appreciate any helpful suggestions on avoiding memory errors. None of the solutions posted was able to cross this limit. Did you try using numpy.fromfile ? This will not require you to allocate more memory than needed. If you specify a count, it will also not have to re-allocate memory in blocks as the array size grows. It's limitation is that it is not a very sophisticated csv reader (it only understands a single separator (plus line-feeds are typically seen as a separator). -Travis -- http://mail.python.org/mailman/listinfo/python-list
Re: Maths error
Nick Maclaren wrote: The problem with it is that it is an unrealistically pessimal model, and there are huge classes of algorithm that it can't handle at all; anything involving iterative convergence for a start. It has been around for yonks (I first dabbled with it 30+ years ago), and it has never reached viability for most real applications. In 30 years, it has got almost nowhere. Don't confuse interval methods with interval arithmetic, because you don't need the latter for the former, despite the claims that you do. | For people just getting into it, it can be shocking to realize just how | wide the interval can become after some computations. Yes. Even when you can prove (mathematically) that the bounds are actually quite tight :-) I've been experimenting with a fixed-point interval type in python. I expect many algorithms would require you to explicitly round/collapse/whatever-term the interval as they go along, essentially making it behave like a float. Do you think it'd suitable for general-use, assuming you didn't mind the explicit rounding? Unfortunately I lack a math background, so it's unlikely to progress past an experiment. -- http://mail.python.org/mailman/listinfo/python-list
Re: Maths error
In article [EMAIL PROTECTED], Rhamphoryncus [EMAIL PROTECTED] writes: | | I've been experimenting with a fixed-point interval type in python. I | expect many algorithms would require you to explicitly | round/collapse/whatever-term the interval as they go along, essentially | making it behave like a float. Yes, quite. | Do you think it'd suitable for | general-use, assuming you didn't mind the explicit rounding? I doubt it. Sorry. | Unfortunately I lack a math background, so it's unlikely to progress | past an experiment. As the same is true for what plenty of people have done, despite them having good backgrounds in mathematics, don't feel inferior! Regards, Nick Maclaren. -- http://mail.python.org/mailman/listinfo/python-list
Re: Watch log
Salvatore Di Fazio wrote: I would like wait until a new line will be write in the file. Something like the watch cat Log command on Linux os. Why not read the file continuously and only do something if a new line is complete (i. e. a newline char is detected)? How can I check the eof and restart the reading? Why do you want to check for an EOF character? Regards, Björn -- BOFH excuse #212: Of course it doesn't work. We've performed a software upgrade. -- http://mail.python.org/mailman/listinfo/python-list
Re: Watch log
Bjoern Schliessmann ha scritto: Why not read the file continuously and only do something if a new line is complete (i. e. a newline char is detected)? How can I read the file continuously? -- http://mail.python.org/mailman/listinfo/python-list
Re: Conflicting needs for __init__ method
[EMAIL PROTECTED] writes: Suppose you're writing a class Rational for rational numbers. The __init__ function of such a class has two quite different roles to play. That should be your first clue to question whether you're actually needing separate functions, rather than trying to force one function to do many different things. First, it's supposed to allow users of the class to create Rational instances; in this role, __init__ is quite a complex beast. The __init__ function isn't the constructor you find in other languages. Its only purpose is to initialise an already-created instance, not make a new one. It needs to allow arguments of various types---a pair of integers, a single integer, another Rational instance, and perhaps floats, Decimal instances, and suitably formatted strings. It has to validate the input and/or make sure that suitable exceptions are raised on invalid input. And when initializing from a pair of integers---a numerator and denominator---it makes sense to normalize: divide both the numerator and denominator by their greatest common divisor and make sure that the denominator is positive. All of this points to having a separate constructor function for each of the inputs you want to handle. But __init__ also plays another role: it's going to be used by the other Rational arithmetic methods, like __add__ and __mul__, to return new Rational instances. No, it won't; those methods won't use the __init__ method. They will use a constructor, and __init__ is not a constructor (though it does get *called by* the construction process). For this use, there's essentially no need for any of the above complications: it's easy and natural to arrange that the input to __init__ is always a valid, normalized pair of integers. Therefore, make your __init__ handle just the default, natural case you identify. class Rational(object): def __init__(self, numerator, denominator): self.numerator = numerator self.denominator = denominator So the question is: (how) do people reconcile these two quite different needs in one function? By avoiding the tendency to crowd a single function with disparate functionality. Every function should do one narrowly-defined task and no more. @classmethod def from_string(input): (n, d) = parse_elements_of_string_input(input) return Rational(n, d) @classmethod def from_int(input): return Rational(input, 1) @classmethod def from_rational(input): (n, d) = (input.numerator, input.denominator) return Rational(n, d) def __add__(self, other): result = perform_addition(self, other) return result def __sub__(self, other): result = perform_subtraction(self, other) return result Put whatever you need to for 'parse_elements_of_string_input', 'perform_addition', 'perform_subtraction', etc; either the calculation itself, if simple, or a call to a function that can contain the complexity. Use Python's exception system to avoid error-checking all over the place; if there's a problem with the subtraction, for instance, let the exception propagate up to the code that gave bad input. The alternate constructors are decorated as '@classmethod' since they won't be called as instance methods, but rather: foo = Rational.from_string(355/113) bar = Rational.from_int(17) baz = Rational.from_rational(foo) -- \ If you can't beat them, arrange to have them beaten. -- | `\ George Carlin | _o__) | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
ReportLab - Frames - Images
I have been trying all day to get this to work. My complete code is
below. I can get my text into the PDF, I can get my image in the PDF.
What I can't get to work is frames so that the image (logo) appears to
the right of the text. The image always appears first and then the text
below on the next line.
Please help.
Chuck
*** CUT ***
from reportlab.pdfgen import *
from reportlab.platypus import *
from reportlab.lib.units import inch
from reportlab.platypus import SimpleDocTemplate
from reportlab.platypus import flowables
from reportlab.lib.enums import TA_LEFT, TA_RIGHT, TA_CENTER,
TA_JUSTIFY
from reportlab.lib.pagesizes import letter
#precalculate some basics
top_margin = letter[1] - inch
bottom_margin = inch
left_margin = inch
right_margin = letter[0] - inch
frame_width = right_margin - left_margin
def bill(canvas, doc):
canvas.saveState()
canvas.restoreState()
def run():
doc = []
from reportlab.lib.styles import ParagraphStyle
from reportlab.platypus import Image
pdf = SimpleDocTemplate('bill2.pdf', pagesize = letter)
#need a style
normal = ParagraphStyle('normal')
doc.append(Image(pic.jpg, 100, 71)) #Logo
para = Paragraph(Some text1, normal)
doc.append(para)
para = Paragraph(Some text2, normal)
doc.append(para)
para = Paragraph(Some text3, normal)
doc.append(para)
para = Paragraph(Some text4, normal)
doc.append(para)
para = Paragraph( , normal)
doc.append(para)
doc.append(HRFlowable(color=black, thickness=3, width=100%))
pdf.build(doc,bill)
run()
*** CUT ***
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download win32file
Where can I download win32file / win32ui? The links below are broken. Mark Hammond should be made aware of this. URL below has two links that send you no place http://mail.python.org/pipermail/python-list/2002-October/167638.html Links: http://starship.python.net/crew/mhammond/win32/Downloads.html http://starship.python.net/crew/mhammond/downloads/win32all-148.exe Produce; The requested URL was not found on this server. The link on the referring page seems to be wrong or outdated. Please inform the author of that page about the error. jim-on-linux -- http://mail.python.org/mailman/listinfo/python-list
The curious behavior of integer objects
Am I nuts? Or only profoundly confused? I expected the this little script to print 0: class foo(int): def __init__(self, value): self = value 0xF print foo(0x10) Instead, it prints 16 (at least on python 2.4.4 (Linux) and 2.5 (Wine). Jim Wilson GNV, FL -- http://mail.python.org/mailman/listinfo/python-list
Re: download win32file
jim-on-linux wrote: Where can I download win32file / win32ui? The links below are broken. Mark Hammond should be made aware of this. URL below has two links that send you no place http://mail.python.org/pipermail/python-list/2002-October/167638.html Links: http://starship.python.net/crew/mhammond/win32/Downloads.html http://starship.python.net/crew/mhammond/downloads/win32all-148.exe Produce; The requested URL was not found on this server. The link on the referring page seems to be wrong or outdated. Please inform the author of that page about the error. jim-on-linux Do you mean PyWin32 ? http://sourceforge.net/projects/pywin32/ -- http://mail.python.org/mailman/listinfo/python-list
whats wrong with my reg expression ?
rex2=re.compile('^(?Pvalue[^]*)$',re.M)
File /usr/lib/python2.5/re.py, line 180, in compile
return _compile(pattern, flags)
File /usr/lib/python2.5/re.py, line 233, in _compile
raise error, v # invalid expression
sre_constants.error: unexpected end of regular expression
?
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[ANN] Py2Py 0.0.1 - python code reformatter, initial dev release
Folks, We release development preview snapshot of Py2Py code reformatter [1]. It is a byproduct of the PyBeast project aimed to create the python mutation tester. Now Py2Py code reformatter ignores all comments and 80-char line length requirement. Nevertheless, it produces the same AST as the original code. The code is developed in a test-first manner and has 100% test coverage. Feedback, criticism and bug reports are welcome. Links: [1] http://trac.kds.com.ua/project/pybeast/ [2] http://www.kds.com.ua/wp/2007/01/16/py2py-001-initial-development-snapshot/ -- Andrey V Khavryuchenko Software Development Company http://www.kds.com.ua/ -- http://mail.python.org/mailman/listinfo/python-list
Re: whats wrong with my reg expression ?
Gert Cuykens wrote:
rex2=re.compile('^(?Pvalue[^]*)$',re.M)
File /usr/lib/python2.5/re.py, line 180, in compile
return _compile(pattern, flags)
File /usr/lib/python2.5/re.py, line 233, in _compile
raise error, v # invalid expression
sre_constants.error: unexpected end of regular expression
?
You probably want
rex2=re.compile('^(?Pvalue[\^]*)$',re.M)
Because [] is a bracketed group and the ^ within a bracketed group is a
negation, but you have negated nothing before closing the group.
Alternatively:
rex2=re.compile('^(?Pvalue\^*)$',re.M)
Would have the same meaning, avoiding the bracketed group altogether.
James
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Re: The curious behavior of integer objects
As it turns out, this has little to do with integers and the operations you are trying to do on them. I'll explain in more detail. Integers are immutable, which you may already know. This presents a problem with subclassing them and using the usual special method __init__, because the int object has already been created by this point and can not change. Another special method, __new__, is called passing the class object itself (foo, in this case) for the first argument (traditionally named cls, instead of self). The return of this should be an integer which will be the value of your new foo int-subclass. The following will do as you expected your own example to do. class foo(int): def __new__(cls, value): return value 0xF assert foo(0x10) == 0 # Assertions are much better tests than prints :-) On 1/15/07, Jim B. Wilson [EMAIL PROTECTED] wrote: Am I nuts? Or only profoundly confused? I expected the this little script to print 0: class foo(int): def __init__(self, value): self = value 0xF print foo(0x10) Instead, it prints 16 (at least on python 2.4.4 (Linux) and 2.5 (Wine). Jim Wilson GNV, FL -- http://mail.python.org/mailman/listinfo/python-list -- Read my blog! I depend on your acceptance of my opinion! I am interesting! http://ironfroggy-code.blogspot.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: The curious behavior of integer objects
Jim B. Wilson wrote: Am I nuts? Or only profoundly confused? I expected the this little script to print 0: class foo(int): def __init__(self, value): self = value 0xF That statement only rebinds the local name self to something else. It does not modify the object at all or change the result of instantiating foo(). You need to override __new__ to get the behavior that you want. http://www.python.org/download/releases/2.2.3/descrintro/#__new__ -- Robert Kern I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: The curious behavior of integer objects
At Monday 15/1/2007 19:28, Jim B. Wilson wrote: Am I nuts? Or only profoundly confused? I expected the this little script to print 0: class foo(int): def __init__(self, value): self = value 0xF print foo(0x10) Instead, it prints 16 (at least on python 2.4.4 (Linux) and 2.5 (Wine). Integers are immutable. Insert a print statement and you'll see your __init__ is never called. Anyway, what would you expect from self = something? Use __new__ instead: py class foo(int): ... def __new__(cls, value): ... return int(value 0xF) ... py foo(1) 1 py foo(0x10) 0 See Special method names inside the Python Reference Manual. -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: download win32file
On Monday 15 January 2007 10:37, hg wrote: jim-on-linux wrote: Where can I download win32file / win32ui? The links below are broken. Mark Hammond should be made aware of this. URL below has two links that send you no place http://mail.python.org/pipermail/python-list/ 2002-October/167638.html Links: http://starship.python.net/crew/mhammond/win3 2/Downloads.html http://starship.python.net/crew/mhammond/down loads/win32all-148.exe Produce; The requested URL was not found on this server. The link on the referring page seems to be wrong or outdated. Please inform the author of that page about the error. jim-on-linux Do you mean PyWin32 ? ?? Do I have to download pywin32 to get win32ui, or win32file, or win32api http://sourceforge.net/projects/pywin32/ -- http://mail.python.org/mailman/listinfo/python-list
Re: whats wrong with my reg expression ?
At Monday 15/1/2007 19:41, Gert Cuykens wrote:
rex2=re.compile('^(?Pvalue[^]*)$',re.M)
[^set-of-forbidden-characters]
--
Gabriel Genellina
Softlab SRL
__
Preguntá. Respondé. Descubrí.
Todo lo que querías saber, y lo que ni imaginabas,
está en Yahoo! Respuestas (Beta).
¡Probalo ya!
http://www.yahoo.com.ar/respuestas
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Re: download win32file
?? Do I have to download pywin32 to get win32ui, or win32file, or win32api Yes -- There is no reason for any individual to have a computer in his home. Ken Olsen, President, Digital Equipment, 1977 US computer engineer industrialist (1926 - ) -- http://mail.python.org/mailman/listinfo/python-list
Re: download win32file
On Monday 15 January 2007 18:02, Bill Tydeman wrote: ?? Do I have to download pywin32 to get win32ui, or win32file, or win32api Yes Got it. Thank you. -- http://mail.python.org/mailman/listinfo/python-list
Re: Anyone has a nice view_var procedure ?
At Monday 15/1/2007 17:45, Stef Mientki wrote:
Is there some handy/ nice manner to view the properties of some variable ?
As a newbie, I often want to see want all the properties of a var,
and also some corner values (large arrays) etc.
You can try dir(x), vars(x). If you want a nice print, see the pprint module.
py import csv
py x = csv.DictReader('') # a bogus object
py x
csv.DictReader instance at 0x00BC79B8
py dir(x)
['__doc__', '__init__', '__iter__', '__module__', 'fieldnames',
'next', 'reader'
, 'restkey', 'restval']
py vars(x)
{'restkey': None, 'restval': None, 'fieldnames': None, 'reader':
_csv.reader ob
ject at 0x00BC98B8}
py from pprint import pprint
py pprint(vars(x))
{'fieldnames': None,
'reader': _csv.reader object at 0x00BC98B8,
'restkey': None,
'restval': None}
py
Probably it's not so difficult,
but I don't see how to distinguish for example between a string and an
array. An array has a shape, a string not etc.
Yes, strings share a lot of functionality with other sequence types:
[], len, in, etc. You can test if an object is a string using
isinstance(obj, str). If you want to include unicode objects too, use
isinstance(obj, basestring).
--
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Softlab SRL
__
Preguntá. Respondé. Descubrí.
Todo lo que querías saber, y lo que ni imaginabas,
está en Yahoo! Respuestas (Beta).
¡Probalo ya!
http://www.yahoo.com.ar/respuestas
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Re: can't get import to work!
At Monday 15/1/2007 14:35, [EMAIL PROTECTED] wrote: from just.for.fun import Fubar This doesn't work. The following error is displayed: ImportError: No module named for You can't have a module named for, it's a reserved word. Try using For instead (or any other legal name!). -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: ReportLab - Frames - Images
Chuck wrote:
I have been trying all day to get this to work. My complete code is
below. I can get my text into the PDF, I can get my image in the PDF.
What I can't get to work is frames so that the image (logo) appears to
the right of the text. The image always appears first and then the text
below on the next line.
Please help.
you'll get more help at the reportlab users list (see
http://two.pairlist.net/pipermail/reportlab-users/ )
Anyhow I got some output from your script, by making two changes
*** CUT ***
from reportlab.pdfgen import *
..
pdf = SimpleDocTemplate('bill2.pdf', pagesize = letter)
#need a style
normal = ParagraphStyle('normal')
doc.append(Image(pic.jpg, 100, 71)) #Logo
para = Paragraph(Some text1, normal)
doc.append(para)
para = Paragraph(Some text2, normal)
doc.append(para)
para = Paragraph(Some text3, normal)
doc.append(para)
para = Paragraph(Some text4, normal)
doc.append(para)
para = Paragraph( , normal)
doc.append(para)
doc.append(HRFlowable(color=black, thickness=3, width=100%))
change(1)
doc.append(flowables.HRFlowable(color=black, thickness=3,
width=100%))
pdf.build(doc,bill)
change(2)
pdf.build(doc)
run()
*** CUT ***
I also had to change the name of the image to one on my system.
Hope this helps
--
Robin Becker
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Re: whats wrong with my reg expression ?
thx
PS i also cant figure out what is wrong here ?
rex=re.compile('^(?Pvalue[^]*)$',re.M)
for v in l:
v=rex.match(v).group('value')
v=v.replace('','')
return(l)
v=rex.match(v).group('value')
AttributeError: 'NoneType' object has no attribute 'group'
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Re: download win32file
jim-on-linux wrote: On Monday 15 January 2007 10:37, hg wrote: jim-on-linux wrote: Where can I download win32file / win32ui? The links below are broken. Mark Hammond should be made aware of this. URL below has two links that send you no place http://mail.python.org/pipermail/python-list/ 2002-October/167638.html Links: http://starship.python.net/crew/mhammond/win3 2/Downloads.html http://starship.python.net/crew/mhammond/down loads/win32all-148.exe Produce; The requested URL was not found on this server. The link on the referring page seems to be wrong or outdated. Please inform the author of that page about the error. jim-on-linux Do you mean PyWin32 ? ?? Do I have to download pywin32 to get win32ui, or win32file, or win32api http://sourceforge.net/projects/pywin32/ To my knowledge, yes. hg -- http://mail.python.org/mailman/listinfo/python-list
Re: Anyone has a nice view_var procedure ?
Stef Mientki wrote: hello, Is there some handy/ nice manner to view the properties of some variable ? As a newbie, I often want to see want all the properties of a var, and also some corner values (large arrays) etc. Probably it's not so difficult, but I don't see how to distinguish for example between a string and an array. An array has a shape, a string not etc. thanks, Stef Mientki I am also a newbie so if this is not what you want I can't give much more as of yet. You can use type() to check what a Variable is. Usage: #-Python Code- aVar = [zero, 1, float(2)] type(aVar) type 'list' type(aVar[0]) type 'str' type(aVar[1]) type 'int' type(aVar[2]) type 'float' if type(aVar[1]) == int: print test test #-End Code--- There are also function like len(). Usage: #-Python Code- len(aVar) 3 len(aVar[0]) 4 #-End Code--- Hope this helps. Adam -- http://mail.python.org/mailman/listinfo/python-list
Cygwin Python/PIL TCL/TK fork rebase solution
I recently was forced to build PIL under Cygwin Python 2.4.3 and ran into the Cygwin fork/rebase issue with TCL/TK yet again. Unfortunately, none of the rebase workarounds I found through my copious STFWing worked this time. Through trial and error I found that the following worked: rebase -b 0x10 /bin/tk84.dll I post this here mostly for documenatation so that others can find a more current solution than what's already available through STFWing. But I'm also curious about rebase and to understand more about how one chooses what base address and offset to use. In my trial and error I found that the default base address of 0x7000 didn't work, nor did the value of 0x6800 I found through my STFWing. I found the value of 0x10 by incrementing from 0x1000 to 0x2000 to 0x3000 and so on until I found one that worked. So if anyone wants to explain to me how to choose base address and offset values, that would be cool. Ross -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem with win32pipe.popen2
At Monday 15/1/2007 07:24, diego wrote: I'm trying to understand how popen2 works. Found in this group, that popen2.popen2 can cause trouble so i chose win32pipe.popen2. have a look a the listing of 2 files: ekmain.py: ** import win32pipe (stdin1, stdout1) = win32pipe.popen2(test1.py) stdin1.write(1\n) print stdout1.readlines() # This will print the result. ** test1.py: ** a=raw_input(a=) print ***a=,a print finished! ** i do not understand, why ekmain.py produces only following output: ['a='] why is the stdin1.write(1\n) command ignored? Using popen4 instead of popen2 we get stderr too, and there is a traceback: ['a=Traceback (most recent call last):\n', ' File C:\\TEMP\\test1.py, line 1, in ?\n', 'a=raw_input(a=)\n', 'EOFError: EOF when reading a line\n'] Using python test1.py as the popen4 argument we get the expected result: C:\TEMPmain.py ['a=***a= 1\n', 'finished!\n'] (I don't know why) p.s.: i working with python 2.3 on win2000. I used 2.4 on XPSP2. -- Gabriel Genellina Softlab SRL __ Preguntá. Respondé. Descubrí. Todo lo que querías saber, y lo que ni imaginabas, está en Yahoo! Respuestas (Beta). ¡Probalo ya! http://www.yahoo.com.ar/respuestas -- http://mail.python.org/mailman/listinfo/python-list
Re: Conflicting needs for __init__ method
Steven D'Aprano wrote:
class Rational(object):
def __init__(self, numerator, denominator):
print lots of heavy processing here...
# processing ints, floats, strings, special case arguments,
# blah blah blah...
self.numerator = numerator
self.denominator = denominator
def __copy__(self):
cls = self.__class__
obj = cls.__new__(cls)
obj.numerator = self.numerator
obj.denominator = self.denominator
return obj
def __neg__(self):
obj = self.__copy__()
obj.numerator *= -1
return obj
Here's a variation on that which is perhaps better suited for objects with
lots of attributes:
def __copy__(self):
cls = self.__class__
obj = cls.__new__(cls)
obj.__dict__.update(self.__dict__) # copy everything quickly
return obj
I recently had to do something similar for my ORM, where a
user-instantiated object gets expensive default values, but the back
end just overwrites those defaults when resurrecting objects, so it
shouldn't pay the price. However (and this is the tricky part), I also
wanted to allow subclasses to extend the __init__ method, so just using
cls.__new__(cls) didn't quite go far enough. Here's what I ended up
with [1]:
def __init__(self, **kwargs):
self.sandbox = None
cls = self.__class__
if self._zombie:
# This is pretty tricky, and deserves some detailed
explanation.
# When normal code creates an instance of this class, then
the
# expensive setting of defaults below is performed
automatically.
# However, when a DB recalls a Unit, we have its entire
properties
# dict already and should skip defaults in the interest of
speed.
# Therefore, a DB which recalls a Unit can write:
# unit = UnitSubClass.__new__(UnitSubClass)
# unit._zombie = True
# unit.__init__()
# unit._properties = {...}
# instead of:
# unit = UnitSubClass()
# unit._properties = {...}
# If done this way, the caller must make CERTAIN that all
of
# the values in _properties are set, and must call
cleanse().
self._properties = dict.fromkeys(cls.properties, None)
else:
# Copy the class properties into self._properties,
# setting each value to the UnitProperty.default.
self._properties = dict([(k, getattr(cls, k).default)
for k in cls.properties])
# Make sure we cleanse before assigning properties from
kwargs,
# or the new unit won't get saved if there are no further
changes.
self.cleanse()
for k, v in kwargs.iteritems():
setattr(self, k, v)
The _zombie argument is therefore a flag which allows you to keep the
initialization code inside __init__ (rather than repeating it inside
every method).
Robert Brewer
System Architect
Amor Ministries
[EMAIL PROTECTED]
[1] http://projects.amor.org/dejavu/browser/trunk/units.py#l552
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Re: whats wrong with my reg expression ?
At Monday 15/1/2007 20:43, Gert Cuykens wrote:
PS i also cant figure out what is wrong here ?
rex=re.compile('^(?Pvalue[^]*)$',re.M)
for v in l:
v=rex.match(v).group('value')
v=v.replace('','')
return(l)
v=rex.match(v).group('value')
AttributeError: 'NoneType' object has no attribute 'group'
match() returns None when there is no match, so you have to split
that in two steps:
m = rex.match(v)
if m:
v = m.group('value')
else:
# no match found!
--
Gabriel Genellina
Softlab SRL
__
Preguntá. Respondé. Descubrí.
Todo lo que querías saber, y lo que ni imaginabas,
está en Yahoo! Respuestas (Beta).
¡Probalo ya!
http://www.yahoo.com.ar/respuestas
--
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Re: ReportLab - Frames - Images
Thanks for the help. I made you changes but it still puts the picture above the text, not beside the text. I also found a user group at http://news.gmane.org/gmane.comp.python.reportlab.user . It may be the same. I have now posted there. Chuck -- http://mail.python.org/mailman/listinfo/python-list
Re: How naive is Python?
[EMAIL PROTECTED] wrote: Actually, it isn't until I work my way back to 2.3 that I start to see quadratic behavior: Yes, that's because the behavior was changed for 2.4, so it wouldn't be quadratic in this case. -- http://mail.python.org/mailman/listinfo/python-list
Can't find module named 'svn' in python
Hi, i have a simple test which tries to load 'svn' moddule. # python -c from svn import client Traceback (most recent call last): File string, line 1, in ? ImportError: No module named svn I have checked I have sub-directories 'libsvn', 'svn' under /usr/local/lib/svn-python/ cd /usr/local/lib/svn-python/ [EMAIL PROTECTED] svn-python]# ls libsvn svn But python still can't find it. Please tell me what am I missing. I appreciate your help. -- http://mail.python.org/mailman/listinfo/python-list
Re: Watch log
Salvatore Di Fazio wrote: Hi guys, I've an application that writes a log file. I need to write an application with python that will read this file. I would like wait until a new line will be write in the file. Something like the watch cat Log command on Linux os. How can I check the eof and restart the reading? You didn't provide much info so here goes. If you use the logger module built into Python you can set up a logger that uses sockets. Have your program log to a socket and have the other program read from the socket. That way you will always have the latest log entries in the monitor program. If you can't control the program that writes the log file, have your monitoring program look for change in the length of the logfile (you can use the os.stat module for this). When it changes, open the file, seek to the old length and read bytes up to the new length and close the logfile. What is read will be the new log entry (or entries). Reset the logfile length high water mark and loop. Hope information helps. -Larry Bates -- http://mail.python.org/mailman/listinfo/python-list
Re: Anyone has a nice view_var procedure ?
Stef Mientki wrote:
hello,
Is there some handy/ nice manner to view the properties of some variable ?
As a newbie, I often want to see want all the properties of a var,
and also some corner values (large arrays) etc.
Probably it's not so difficult,
but I don't see how to distinguish for example between a string and an
array. An array has a shape, a string not etc.
thanks,
Stef Mientki
Others have given some suggestions, but I thought I'd put in my
thoughts also. When I first started using Python I was looking for
exactly what you describe. After using a while, you begin to understand
that the objects in Python can be so complex (lists of dictionaries that
contain lists and other dictionaries, lists of class instances that can
contain other class instances, that can contain, you get the picture).
You have to begin to think about navigating through this by using dir(),
vars() and pprint.pprint(). Unlike older programming languages there is
no limit to how you can mix/match values within an object.
Also in standard Python lists (arrays?) don't have shape (there are add
on modules that give you this type of feature). Everything is a
collection of objects.
class foo:
def __init__(self):
self.x=1
self.y=2
l=[[1,2,3], 'test', 6, 3.14159, {'a':1, 'b':2}, foo()]
a list with:
a list as first element
a string as the second element
an integer as the third element
a float as the third element
a dictionary as the fourth element
a class instance as the fifth element
The tutorial is a good place to start if you haven't already looked at
it.
-Larry Bates
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for v in l:
is there a other way then this to loop trough a list and change the values i=-1 for v in l: i=i+1 l[i]=v+x something like for v in l: l[v]=l[v]+x -- http://mail.python.org/mailman/listinfo/python-list
Re: for v in l:
Try: l = [i+x for i in l] OR l = map(lambda i: i+x, l) -N Gert Cuykens wrote: is there a other way then this to loop trough a list and change the values i=-1 for v in l: i=i+1 l[i]=v+x something like for v in l: l[v]=l[v]+x -- http://mail.python.org/mailman/listinfo/python-list
Re: Can't find module named 'svn' in python
My first thought: Check if you have /usr/local/lib/svn-python/ in your PYTHONPATH environment variable (echo $PYTHONPATH). If its missing, set it in the environment. export PYTHONPATH=$PYTHONPATH:/usr/local/lib/svn-python -N [EMAIL PROTECTED] wrote: Hi, i have a simple test which tries to load 'svn' moddule. # python -c from svn import client Traceback (most recent call last): File string, line 1, in ? ImportError: No module named svn I have checked I have sub-directories 'libsvn', 'svn' under /usr/local/lib/svn-python/ cd /usr/local/lib/svn-python/ [EMAIL PROTECTED] svn-python]# ls libsvn svn But python still can't find it. Please tell me what am I missing. I appreciate your help. -- http://mail.python.org/mailman/listinfo/python-list
