Last chance to join the Summer of PyPy!
Hopefully by now you have heard of the Summer of PyPy, our program for funding the expenses of attending a sprint for students. If not, you've just read the essence of the idea :-) However, the PyPy EU funding period is drawing to an end and there is now only one sprint left where we can sponsor the travel costs of interested students within our program. This sprint will probably take place in Leysin, Switzerland from 8th-14th of January 2007. So, as explained in more detail at: http://codespeak.net/pypy/dist/pypy/doc/summer-of-pypy.html we would encourage any interested students to submit a proposal in the next month or so. If you're stuck for ideas, you can find some at http://codespeak.net/pypy/dist/pypy/doc/project-ideas.html but please do not feel limited in any way by this list! Cheers, mwh ... and the PyPy team -- This is an off-the-top-of-the-head-and-not-quite-sober suggestion, so is probably technically laughable. I'll see how embarassed I feel tomorrow morning.-- Patrick Gosling, ucam.comp.misc -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
[Ann] ctypes wiki
I have installed a wiki which could / should be used to document the ctypes package and ctypes related packages (like comtypes, for example). ctypes is a foreign function library for Python: http://starship.python.net/crew/theller/ctypes/ I hope the wiki will evolve over time into a useful resource. Currently there is no actual contents - so please contribute by adding tips, tricks, and whatever you have to share about ctypes. The wiki URL is: http://starship.python.net/crew/theller/wiki Thomas -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: ANN: wxPython 2.7.2.0
Is there a new version of Demo Docs released also? I get this error from Sourceforge after clicking on the link at wxPython page. Could not read file. Go back. /home/ftp/pub/sourceforge//w/wx/wxpython/wxPython2.7-win32-docs-demos-2.7.2.0.exe Nov 08, 2006 07:10 --- Robin Dunn [EMAIL PROTECTED] wrote: Announcing -- The 2.7.2.0 release of wxPython is now available for download at http://wxpython.org/download.php. This is expected to be the last stepping stone in the path to the next stable release series, 2.8.x. We're pushing full speed ahead in order to get 2.8.0 included with OSX 10.5, and so far we are very close to being on schedule. This release has some house-keeping style changes, as well as some user-contributed patches and also the usual crop of bug fixes. Source and binaries are available for both Python 2.4 and 2.5 for Windows and Mac, as well some pacakges for varous Linux distributions. A summary of changes is listed below and also at http://wxpython.org/recentchanges.php. What is wxPython? - wxPython is a GUI toolkit for the Python programming language. It allows Python programmers to create programs with a robust, highly functional graphical user interface, simply and easily. It is implemented as a Python extension module that wraps the GUI components of the popular wxWidgets cross platform library, which is written in C++. wxPython is a cross-platform toolkit. This means that the same program will usually run on multiple platforms without modifications. Currently supported platforms are 32-bit Microsoft Windows, most Linux or other Unix-like systems using GTK2, and Mac OS X 10.3+, in most cases the native widgets are used on each platform. Changes in 2.7.2.0 -- Patch [ 1583183 ] Fixes printing/print preview inconsistencies Add events API to wxHtmlWindow (patch #1504493 by Francesco Montorsi) Added wxTB_RIGHT style for right-aligned toolbars (Igor Korot) Added New Zealand NZST and NZDT timezone support to wx.DateTime. wx.Window.GetAdjustedBestSize is deprecated. In every conceivable scenario GetEffectiveMinSize is probably what you want to use instead. wx.Image: Gained support for TGA image file format. wx.aui: The classes in the wx.aui module have been renamed to be more consistent with each other, and make it easier to recognize in the docs and etc. that they belong together. FrameManager -- AuiManager FrameManagerEvent -- AuiManagerEvent PaneInfo -- AuiPaneInfo FloatingPane -- AuiFloatingPane DockArt --AuiDockArt TabArt -- AuiTabArt AuiMultiNotebook -- AuiNotebook AuiNotebookEvent -- AuiNotebookEvent wx.lib.customtreectrl: A patch from Frame Niessink which adds an additional style (TR_AUTO_CHECK_PARENT) that (un)checks a parent when all children are (un)checked. wx.animate.AnimationCtrl fixed to display inactive bitmap at start (patch 1590192) Patch from Dj Gilcrease adding the FNB_HIDE_ON_SINGLE_TAB style flag for wx.lib.flatnotebook. wx.Window.GetBestFittingSize has been renamed to GetEffectiveMinSize. SetBestFittingSize has been renamed to SetInitialSize, since it is most often used only to set the initial (and minimal) size of a widget. The QuickTime backend for wx.media.MediaCtrl on MS Windows works again. Just pass szBackend=wx.media.MEDIABACKEND_QUICKTIME to the constructor to use it instead of the default ActiveMovie backend, (assuming the quicktime DLLs are available on the system.) -- Robin Dunn Software Craftsman http://wxPython.org Java give you jitters? Relax with wxPython! -- http://mail.python.org/mailman/listinfo/python-list hello Sponsored Link Degrees online in as fast as 1 Yr - MBA, Bachelor's, Master's, Associate Click now to apply http://yahoo.degrees.info -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations.html
Re: Problem getting a file pathname with tkFileDialog
On Wed, 08 Nov 2006 20:01:08 +0100, [EMAIL PROTECTED] wrote: Hello, I am working on a school project that requires me to get the path of a filename for future treatment. I've tried getting a file with tkFileDialog.askopenfile. import tkFileDialog file = tkFileDialog.askopenfile() print file It prints the opened files stuff, but I just can not find how to get that path as a string. I've searched around google and the present group, and found no documentation on the file class used with tkFileDialog. Does someone have a solution for that? Use tkFileDialog.askopenfilename? HTH -- python -c print ''.join([chr(154 - ord(c)) for c in 'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-']) -- http://mail.python.org/mailman/listinfo/python-list
Re: profanity on comp.lang.python (was Re: Pyro stability)
In [EMAIL PROTECTED], skip wrote: Irmen So there. Finally back on the original subject ;-) And without satisfying Godwin's Law. Pretty good. Which was very hard with all those language nazis out there. Ooops… SCNR, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem getting a file pathname with tkFileDialog
On Wed, 08 Nov 2006 21:59:38 +0100, Tim Daneliuk [EMAIL PROTECTED] wrote: Sefyroth wrote: Thanks, but I get this error when I try this. UnicodeEncodeError: 'ascii' codec can't encode character u'\xe8' in position 12: ordinal not in range(128) I had encountered it with the askdirectory method as well. Is there an easy way to bypass this? Thanks again I believe you are running into a directory or file name that has non-ascii characters in it. Python as shipped is set up to deal with ascii as its native encoding format. You can change this by editing the site.py file - look in the Lib directory in your python installation. Look for this code: --- def setencoding(): Set the string encoding used by the Unicode implementation. The default is 'ascii', but if you're willing to experiment, you can change this. encoding = ascii # Default value set by _PyUnicode_Init() if 0: # Enable to support locale aware default string encodings. import locale loc = locale.getdefaultlocale() if loc[1]: encoding = loc[1] --- Change the if 0: to if 1: and see if that doesn't fix the problem. This is usually a bad idea, especially if the script must be distributed to other users in any way: since they probably never did this trick, the code will fail when they use it. I know it's a pain, but you *have* to deal with encodings yourself, and not let the system guess what you might want. In the OP's case, the problem just lies in the 'print' statement, that tries to encode the file name in ASCII before printing it. So just doing: print repr(file.name) would solve the problem. HTH -- python -c print ''.join([chr(154 - ord(c)) for c in 'U(17zX(%,5.zmz5(17l8(%,5.Z*(93-965$l7+-']) -- http://mail.python.org/mailman/listinfo/python-list
Re: Problem getting a file pathname with tkFileDialog
Tim Daneliuk wrote: Sefyroth wrote: Thanks, but I get this error when I try this. UnicodeEncodeError: 'ascii' codec can't encode character u'\xe8' in position 12: ordinal not in range(128) I had encountered it with the askdirectory method as well. Is there an easy way to bypass this? Thanks again I believe you are running into a directory or file name that has non-ascii characters in it. Python as shipped is set up to deal with ascii as its native encoding format. You can change this by editing the site.py file - look in the Lib directory in your python installation. Look for this code: --- def setencoding(): Set the string encoding used by the Unicode implementation. The default is 'ascii', but if you're willing to experiment, you can change this. encoding = ascii # Default value set by _PyUnicode_Init() if 0: # Enable to support locale aware default string encodings. import locale loc = locale.getdefaultlocale() if loc[1]: encoding = loc[1] --- Change the if 0: to if 1: and see if that doesn't fix the problem. -- Tim Daneliuk [EMAIL PROTECTED] PGP Key: http://www.tundraware.com/PGP/ you could also use encode(iso-8859-1) to nterpret just the printed name such as: print myfilename.encode(iso-8859-1) and by the way if you wanted the file NAME you could have used openfilename() instead of openfile();-) jean-marc -- http://mail.python.org/mailman/listinfo/python-list
Re: opening excel
John Machin wrote: timmy wrote: Hello, has anybody got any experience opening and manilpulating excel spreedsheets via python? it seems pythoncom allows this to happen but i'm a total newb to it. (i usually work in the unix world) all i need to do, is open the xls files and read values from it. If you really mean read rather than manipulate, have a look at the xlrd package (of which I'm the author). http://www.python.org/pypi/xlrd BTW, it's pure Python; you can run it on your unix box if you like :-) Cheers, John sweet thats what i'd like to do -- http://mail.python.org/mailman/listinfo/python-list
Re: PIL: match for ImageMagick's display -ping
import Image im = Image.open('myimage.jpg') im.size(200, 100)PIL reads the header only in the Image.open() call above.
Sponsored Link
Mortgage rates near 39yr lows. $420,000 Mortgage for $1,399/mo - Calculate new house payment--
http://mail.python.org/mailman/listinfo/python-list
Re: Python Jogos
Em Quarta 08 Novembro 2006 13:29, [EMAIL PROTECTED] escreveu: Jogo da velha Jogo do galo Codigos em python kem me arranja Please excuse me for talking in portuguese here, just want to show the better place for Manelito to ask this. Olá Manelito, O idioma usado nessa lista é o inglês, caso não se sinta a vontade em fazer pergutas em inglês, favor perguntar na lista do grupo pythonbrasil. Acesse o site aí: www.pythonbrasil.com.br Até -- Douglas Soares de Andrade msn: [EMAIL PROTECTED] jabber: [EMAIL PROTECTED] Quote: Real programmers don't die, they just GoSub and Return. -- http://mail.python.org/mailman/listinfo/python-list
IndentationError: expected an indented block
hi all. I am using python 2.4. I have to run an older python code and when i run it i get the following messageIndentationError: expected an indented block.1)what does this mean?2)how can i overcome this problemThanks for any advice.kind regards,Antonios Sponsored LinkMortgage rates near historic lows: $150,000 loan as low as $579/mo. Intro-*Terms-- http://mail.python.org/mailman/listinfo/python-list
Re: tkFileDialog
use askopenfilename() instead of askopenfile() import tkFileDialog file = tkFileDialog.askopenfile() print file Access over 1 million songs - Yahoo! Music Unlimited.-- http://mail.python.org/mailman/listinfo/python-list
Re: Python cgi Apache os.system()
Hello thanks for your help.. it was a problem of path as you mentionned... my command was O:\\ ccm start and i have change it with the path of the drive O thanks a lot have a good day Tachi -- http://mail.python.org/mailman/listinfo/python-list
Re: opening excel
has anybody got any experience opening and manilpulating excel spreedsheets via python? it seems pythoncom allows this to happen i posted a couple of snippets along with others in this earlier thread: http://groups.google.com/group/comp.lang.python/browse_thread/thread/a7ed60067ca5a8d4 the XLRD package is a platform-independent non-COM way to *extract* Excel data. you mentioned opening and manipulating spreadsheets *using* COM, so there are more examples targeted towards what you were asking for at that link. i added a small section on Win32 COM client programming to the Core Python book, and although it doesn't go extremely in-depth, it's perfectly targeted to newbs coming from the Unix world, as was i. hope this helps! -- wesley - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Core Python Programming, Prentice Hall, (c)2007,2001 http://corepython.com wesley.j.chun :: wescpy-at-gmail.com python training and technical consulting cyberweb.consulting : silicon valley, ca http://cyberwebconsulting.com -- http://mail.python.org/mailman/listinfo/python-list
ANN: BayPIGgies, Thu Nov 9 @ 7:30p, Air Traffic Control
the silicon valley-san francisco bay area python users group meets at the Googleplex once a month in mountain view, CA. more info and directions available at http://baypiggies.net -- Forwarded message -- From: Dennis Reinhardt Date: Nov 2, 2006 9:03 PM To: Python [EMAIL PROTECTED] Thursday Nov. 9, 2006 7:30-8:50 p.m. Technical Program Title Python for Prototyping in Air Traffic Control Presenter Russ Paielli (NASA Ames Research) About the talk The talk will start with a high-level overview of the US air traffic control system, then it will focus on tactical (i.e., short range) conflict alerting and describe the prototype software that we are developing to replace the legacy software that currently performs that function. Examples of actual operational errors will be presented, and the alerting performance of our system will be tested and compared with the legacy system. The rationale for using Python for the prototype and its testing will be briefly discussed. 8:50 p.m-...Mapping and Random Access -- Mapping Moderator Dennis Reinhardt (DAIR Computer Systems) Mapping is a rapid-fire audience announcement open to all of topic headings (one speaker at a time). Random Access session (everyone breaks up into self-organized small-group discussion) follows immediately after Mapping. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python to tell what is the IP of my PC .
http://monip.org/ -- @-salutations Michel Claveau -- http://mail.python.org/mailman/listinfo/python-list
Re: assigning values in __init__
On Thu, 09 Nov 2006 12:27:12 +1100, Ben Finney wrote:
John Salerno [EMAIL PROTECTED] writes:
Ben Finney wrote:
If you pass a *mapping* of the
I-might-want-to-add-more-in-the-future values, then you get both
explicit *and* expandable, without an arbitrary unneeded sequence.
Do you mean by using the **kwargs parameter?
No.
Well, that'll teach me to put words in your mouth.
[snip]
If you have a group of named, semantically-related, unsequenced values,
pass them into the function as a mapping object (a dict object).
Still, if you are doing this:
mapping_object = {strength: roll_dice(10),
intelligence:roll_dice(10),
dexterity:roll_dice(10)}
my_character = Character(mapping_object)
then there is little benefit to building the dict just for the purposes of
passing it to Character(), never to use it again, not when you can do this:
my_character = Character(strength: roll_dice(10),
intelligence:roll_dice(10), dexterity:roll_dice(10))
If you happen to already have collected your character attributes in a
mapping object for some other reason, then well and good, pass it into the
function. Otherwise, well, I believe the correct container for
character attributes is a Character, not a dict.
--
Steven.
--
http://mail.python.org/mailman/listinfo/python-list
win32com/python different behavour.
I have been developing an application driving a device through COM. I used win32com (brilliant ) and was at a fairly advanced stage being able to access the functions of the device and access/ retrieve its data. A week or two ago I did some overdue upgrading to all the components of the application.win32com, python to 2.4.4 and wxpy to latest. Then the problem began (I think!). My app still accesses the device and some functions still perform as expected. Howeve some important data retrieval functions now behave very differently. Initially a tuple was returned, which was made into a list. This tuple returned (true,'1234xyz'), the first element was the success or failure of the operation, the second the required data. Now all these functions return only the boolean, True or False. I cannot seem to produce the tuple that initially worked extremely well. eg. initially xx.GetMACAddr(param1,param2) -- params as per 'intellisense' would return (True,'123xyz') now xx.GetMACAddr(param1,param2) returns True(type boolean) I have exhausted my relative inexperience on this one. Any Ideas BTW VB extracts the data just fine , so I dont think that the Device or firmware is at fault here. Python has been great so far, I trust this problem is an oversight on my part. Thanks in keen anticipation for any ideas to get over this one!! I am in the middle of returning to Python 2.4.3 just to be sure that this is not the issue. -- http://mail.python.org/mailman/listinfo/python-list
Sorted list - how to change it
I have a sorted list for example [1,2,3,4,5] and I would like to change it in a random way e.g [2,5,3,1,4] or [3,4,1,5,2] or in any other way except being ordered. What is the best/easiest way how to do it? Thank you for help L. -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted list - how to change it
On 09.11.2006 10:52, Lad wrote: I have a sorted list for example [1,2,3,4,5] and I would like to change it in a random way e.g [2,5,3,1,4] or [3,4,1,5,2] or in any other way except being ordered. What is the best/easiest way how to do it? Thank you for help L. use random.shuffel: import random x = [1,2,3,4,5] random.shuffle(x) x [1, 4, 2, 3, 5] random.shuffle(x) x [4, 2, 1, 3, 5] see: http://docs.python.org/lib/module-random.html HTH, Wolfram -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted list - how to change it
Wolfram Kraus wrote: On 09.11.2006 10:52, Lad wrote: I have a sorted list for example [1,2,3,4,5] and I would like to change it in a random way e.g [2,5,3,1,4] or [3,4,1,5,2] or in any other way except being ordered. What is the best/easiest way how to do it? Thank you for help L. use random.shuffel: import random x = [1,2,3,4,5] random.shuffle(x) x [1, 4, 2, 3, 5] random.shuffle(x) x [4, 2, 1, 3, 5] see: http://docs.python.org/lib/module-random.html Wolfram, Thanks a lot for help L. -- http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
jEdit Vim, it can handle all the things. http://www.vim.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a commas-in-between idiom?
Ernesto García García wrote: list = [1,2,3,4,5,6] Just a nit-pick: It's considered an anti-idiom to hide builtins just as list by using it as a name for a variable. list=[1,2,3,4,5] tuple = (1,2,3,4,5) if list == list(tuple): print equal ... Traceback (most recent call last): File stdin, line 1, in ? TypeError: 'list' object is not callable #ouch! ... l=list del list if l == list(tuple): print equal ... equal if tuple(l)==tuple: print equal ... Traceback (most recent call last): File stdin, line 1, in ? TypeError: 'tuple' object is not callable t=tuple del tuple if tuple(l)==t: print equal ... equal -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted list - how to change it
In [EMAIL PROTECTED], Lad wrote: I have a sorted list for example [1,2,3,4,5] and I would like to change it in a random way e.g [2,5,3,1,4] or [3,4,1,5,2] or in any other way except being ordered. lst = [1, 2, 3, 4, 5] tmp = list(lst) while lst == tmp: random.shuffle(lst) If you *really* want to be sure it's not sorted after shuffling. :-) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: help using smtplib to work ..
On 8 Nov 2006 19:45:00 -0800, Jordan [EMAIL PROTECTED] wrote: For some reason, smtp for gmail seems to require that you call server.ehlo() a second time, after having called server.starttls(), otherwise, the server won't accept authorization. Thanks. Not just GMAIL, all (RFC Compliant) SMTP servers require a 2nd EHLO after a successful STARTTLS command. The list of returned options / available commands will usually be different for the 2nd EHLO. Often this will just mean the removal of the STARTTLS option, but sometimes there can be additional functionality offered. HTH :) -- http://mail.python.org/mailman/listinfo/python-list
Re: How to choose the right GUI toolkit ?
John Salerno [EMAIL PROTECTED] wrote: Dan Lenski wrote: So, is there another toolkit I should be looking at? I highly recommend wxPython. I'd second that! There is a book also WxPython in Action http://www.amazon.com/Wxpython-Action-Noel-Rappin/dp/1932394621 Which is certainly my preferred way of learning new stuff! It's very mature, full-featured, and portable, and fairly easy to learn as well. ...with native look and feel on each platform unlike GTK / TK It has got a huge set of widgets and an excellent demo program in which you can try them all out and steal their code. There are some bits of it in which the C++ heritage sticks out, but over the years the toolkit designers have been tucking those under the carpet. The MethodNaming is a bit odd too! A minor annoyance is that there are a number of features which only work on a subset of the platforms. These are well documented though. IMHO the best of the toolkits, but it is a personal choice and yours may differ! There is also PyQT which we wrote off as we wanted to write commercial applications too. As it happens we have a commercial QT licence, but we decided we didn't want to have to incurr the additional expense of renewing it. -- Nick Craig-Wood [EMAIL PROTECTED] -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
Re: How to choose the right GUI toolkit ?
Nick Craig-Wood a écrit : There is also PyQT which we wrote off as we wanted to write commercial applications too. As it happens we have a commercial QT licence, but we decided we didn't want to have to incurr the additional expense of renewing it. Note: Nothing in the GPL prevents you from writting commecial software ;) -- http://mail.python.org/mailman/listinfo/python-list
cx_Oracle and NCLOBs
Greetings, I'm currently working in a Python project to create a multi-platform database replication tool, and cx_Oracle was the chosen provider to handle the Oracle connections. So far the results have been very interesting, but I've been experiencing some problems when inserting CLOB objects through executemany (meaning, using a pre-prepared statement and a dynamic list of parameters). Namely, somehow the provider seems to be converting the data to LONG rather than to CLOB, even though the statement explicitly calls out the TO_NCLOB function; therefore, we get ORA-01461 errors. Now, this may possibly not be an error, but instead a misusage (not many examples available, anyways). Any help/suggestion you can provide? Best regards, Nitro -- http://mail.python.org/mailman/listinfo/python-list
Re: assigning values in __init__
On 2006-11-09, Steven D'Aprano [EMAIL PROTECTED] wrote:
On Thu, 09 Nov 2006 12:27:12 +1100, Ben Finney wrote:
John Salerno [EMAIL PROTECTED] writes:
Ben Finney wrote:
If you pass a *mapping* of the
I-might-want-to-add-more-in-the-future values, then you get both
explicit *and* expandable, without an arbitrary unneeded sequence.
Do you mean by using the **kwargs parameter?
No.
Well, that'll teach me to put words in your mouth.
[snip]
If you have a group of named, semantically-related, unsequenced values,
pass them into the function as a mapping object (a dict object).
Still, if you are doing this:
mapping_object = {strength: roll_dice(10),
intelligence:roll_dice(10),
dexterity:roll_dice(10)}
my_character = Character(mapping_object)
then there is little benefit to building the dict just for the purposes of
passing it to Character(), never to use it again, not when you can do this:
my_character = Character(strength: roll_dice(10),
intelligence:roll_dice(10), dexterity:roll_dice(10))
But you will have to adapt this if you want extra or different
characteristics.
Personnally I would prefer something like:
chardict = {}
for char in characteristics:
chardict[char] = roll_dice(10)
my_character = Character(chardict)
This way you only have to keep your characteristics in one place.
If you happen to already have collected your character attributes in a
mapping object for some other reason, then well and good, pass it into the
function. Otherwise, well, I believe the correct container for
character attributes is a Character, not a dict.
What is wrong with keeping the character attributes in a dict in the
Character?
--
Antoon Pardon
--
http://mail.python.org/mailman/listinfo/python-list
Re: substring search without using built in utils
Gabriel Genellina wrote:
At Wednesday 8/11/2006 22:29, zeal elite wrote:
I am looking for substring search python program without using the
built in funtions like find, or 'in'.
The only reasonable usage for such a constraint would be a school
assignment so: don't cheat and do your homework!
OTHO, looking for existing solutions to a same or similar problem and
studying them is usually considerer good practice in real-life
programming jobs !-)
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
http://mail.python.org/mailman/listinfo/python-list
Re: Sorted list - how to change it
I have a sorted list for example [1,2,3,4,5] and I would like to change it in a random way e.g [2,5,3,1,4] or [3,4,1,5,2] or in any other way except being ordered. What is the best/easiest way how to do it? use random.shuffel: import random x = [1,2,3,4,5] random.shuffle(x) x [1, 4, 2, 3, 5] Just a caveat from past experience...while the OP was talking about lists, for future reference random.shuffle() chokes on strings (and possibly tuples). It requires the ability to edit the target/parameter in place...a functionality that strings don't provide. Thus, for a word jumble program I was playing with, you can't just do word = 'hello' random.shuffle(word) but rather you have to list'ify the word, shuffle it, then pack it back together: word = 'hello' a = list(word) random.shuffle(a) word = ''.join(a) I remember seeing discussion on the list at one point of a MutableString class, which might be successfully passed to random.shuffle() without hiccuping. -tkc -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted list - how to change it
In [EMAIL PROTECTED], Marc 'BlackJack' Rintsch wrote: lst = [1, 2, 3, 4, 5] tmp = list(lst) while lst == tmp: random.shuffle(lst) Argh, that fails if the list is empty or contains just one item. lst = [1, 2, 3, 4, 5] if len(lst) 1: tmp = list(lst) while lst == tmp: random.shuffle(lst) Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: substring search without using built in utils
Bruno Desthuilliers wrote: Gabriel Genellina wrote: At Wednesday 8/11/2006 22:29, zeal elite wrote: I am looking for substring search python program without using the built in funtions like find, or 'in'. The only reasonable usage for such a constraint would be a school assignment so: don't cheat and do your homework! OTHO, looking for existing solutions to a same or similar problem and studying them is usually considerer good practice in real-life programming jobs !-) Looking at an existing solution for substring search that was coded in Python, instead of using the built-in functionality would IMHO be considered extremely bad practice in a real-life programming job. -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a commas-in-between idiom?
On 2006-11-08, Georg Brandl [EMAIL PROTECTED] wrote: Peter van Kampen schrieb: On 2006-11-06, Fredrik Lundh [EMAIL PROTECTED] wrote: I've collected a bunch of list pydioms and other notes here: http://effbot.org/zone/python-list.htm A = B = [] # both names will point to the same list I've been bitten by this once or twice in the past, but I have always wondered what it was useful for? Can anybody enlighten me? Do you never have a situation where you want to assign the same value to two variables? In the sense that I might want two empty lists or maybe 2 ints that are initialised as 0 (zero). That's what I (incorrectly) thought A = B = [] did. Or are you objecting to the fact that both names point to the same object? I'm not objecting to anything, merely wondering when I could/should use this idiom. There's a nice example in another response (self.items = items = []) It couldn't be otherwise. Consider: X = [] A = B = X What should this do? Copy X and assign one copy to A, one to B? Ah yes, I see the error in my ways...I skipped the A = B part too lightly. Thanks, PterK -- Peter van Kampen pterk -- at -- datatailors.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a commas-in-between idiom?
On 2006-11-08, Gabriel Genellina [EMAIL PROTECTED] wrote: At Wednesday 8/11/2006 16:51, Peter van Kampen wrote: A = B = [] # both names will point to the same list I've been bitten by this once or twice in the past, but I have always wondered what it was useful for? Can anybody enlighten me? As an optimization, inside a method, you can bind an instance attribute and a local name to the same object: def some_action(self): self.items = items = [] // following many references to self.items, // but using items instead. Names in the local namespace are resolved at compile time, so using items is a lot faster than looking for items inside self's namespace each time it's used. Nice example. Thanks, PterK -- Peter van Kampen pterk -- at -- datatailors.com -- http://mail.python.org/mailman/listinfo/python-list
Re: cx_Oracle and NCLOBs
Sorry I have no direct answer for you, but suspect you should post to the cx_Oracle group. Check the sourceforge project page. It is also conveniently mirrored at news.gmane.org. -- http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
robert wrote: Shane Hathaway wrote: of multiple cores. I think Python only needs a nice way to share a relatively small set of objects using shared memory. POSH goes in that direction, but I don't think it's simple enough yet. http://poshmodule.sourceforge.net/ interesting, a solution possibly a little faster than pickling - but maybe only in selected situations. Made already experiments with pickling through shared memory. What did you discover in your experiments? I'd certainly suspect that pickling is going to add an unacceptable degree of overhead in the kind of application you're attempting to write (using a shared data structure with random access properties), and I'll admit that I haven't really had to deal with that kind of situation when using my own pickle-based parallelisation solutions (which involve communicating processes). With x = posh.share(x) an object tree will be (deep-)copied to shared mem ( as far as objects fullfil some conditions http://poshmodule.sourceforge.net/posh/html/node6.html: is this true for numpy arrays?) My impression is that POSH isn't maintained any more and that work was needed to make it portable, as you have observed. Some discussions did occur on one of the Python development mailing lists about the possibility of using shared memory together with serialisation representations faster than pickles (which also don't need to be managed as live objects by Python), and I think that this could be an acceptable alternative. Every object to be inserted in the hot tunnel object tree has to be copied that same style. Thus ~pickling, but somewhat easier to use. If my understanding of hot tunnel object tree is correct, you're really wanting fast access involving mutual exclusion to some shared data structure. At this point it becomes worth considering some kind of distributed object technology (or even a database technology) where you have to initialise the data structure and then communicate with an object (or database) to perform operations on it, all for reasons I'll explain shortly. In your ideal situation, you say that you'd have the data structure in the same address space as a number of threads, and each thread would be able to perform some algorithm on the data structure, but the pattern of accessing the structure isn't an insignificant concern even where you can assume that the overheads are generally low: reading and writing things might be fast in the same address space, but if the nature of access involves lots of locking, you'll incur quite a penalty anyway. In other words, if each read or write to the structure involves acquiring a lock for that operation in isolation, this could significantly diminish performance, whereas if you can guarantee that the granularity of locking is more coarse than having to occur upon each read or write access - that there exist some high-level operations that require consistency within the data structure - then reasonable performance might be maintained. However, if the pattern of concurrent access is restricted to coarse operations, where some entity has exclusive access to a potentially large dataset, and where the overhead of the communication of inputs and outputs to and from that entity is low in comparison to the cost of performing such coarse operations, and where such operations are themselves performed infrequently, then such a pattern coincides with classic database or distributed object scenario. In other words, you implement the operations acting on the data structure in a distributed object (or as a database query or operation) and then invoke such operations from separate processes. I hope this makes some sense. Generally, demands for high concurrent performance using threads often ignore other important properties such as reliability and scalability. Certainly, threads have an important place - classically, this involved maintaining responsiveness in graphical user interfaces - but even then, the background threads were often detached and not competing for the same resources as the foreground threads servicing the event loop. The only kinds of situation I can think of right now which might benefit from uninhibited random access to shared data structures might be things like simulations or large-scale multi-user games, where an appropriate data architecture cannot be decided in advance, but even then there are approaches which attempt to mitigate the seemingly unpredictable nature of access to shared data. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted list - how to change it
Lad a écrit : I have a sorted list for example [1,2,3,4,5] and I would like to change it in a random way e.g [2,5,3,1,4] or [3,4,1,5,2] or in any other way except being ordered. What is the best/easiest way how to do it? Thank you for help L. Not accepting that the shuffle outputs the same list as entered would make the random less random :) -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception Handling in TCPServer (was; Problem exiting application in Windows Console.)
Steve Holden wrote: ... First of all, five hour response time is a high expectation, you must be a Platinum customer :-) I'm in the last week of my current job - start a new one on Monday, and so I haven't got a great deal to do at the moment. Five hours is a lifetime when you're staring at a newsgroup waiting for it to change ;-) Secondly, while a try/except catching all exceptions *is* unusual it's justifiable in a server context (though some logging and/or analysis certainly wouldn't go amiss). True. And I'd expected that the exception ought to be passed to the handle_error method so that something could be done with it there. This morning however I discovered that Guido's been in his time machine since yesterday and provided the very useful sys.exc_info() function for this very purpose! Thirdly your ugly hack *could* be replaced by something cleaner with more analysis of the trace structure, but given how infrequently this code is going to run and the low probability that anything else will trigger the hook I'd be happy with it as it is. But that's just me ... The sys.exc_info() was what I was looking for it turns out, I can get the exception type from that instead of trying to parse the stack trace. However: Gabriel Genellina wrote: ... Replace serve_forever with your own loop checking an exit flag, and set the flag in your quit.html handler instead of sys.exit(0) This is the approach I decided to go for. I found that RequestHandler objects have a reference to its server that I can use to control the server. Thanks for the input chaps! -- http://mail.python.org/mailman/listinfo/python-list
Post data using the libcurl
Hi,
I am newbie to programming with libcurl. the problem is i want to send
my gmail username and password outside the browser and get access to my
mail. this i am doing with LibCurl. Though i dont get any errors, i am
nt able to get the o/p Can anyone kindly help. i will attach the
program here
#include curl/curl.h
#include curl/types.h
#include curl/easy.h
int main(int argc, char *argv[])
{
CURL *curl;
CURLcode res;
struct curl_httppost *formpost=NULL;
struct curl_httppost *lastptr=NULL;
struct curl_slist *headerlist=NULL;
char buf[] = Expect:;
curl_global_init(CURL_GLOBAL_ALL);
/* Fill in the file upload field */
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, rajani.vemula,
CURLFORM_END);
/* Fill in the filename field */
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, x,
CURLFORM_END);
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, null,
CURLFORM_COPYCONTENTS, Sign in,
CURLFORM_END);
curl = curl_easy_init();
/* initalize custom header list (stating that Expect: 100-continue
is
not
wanted */
headerlist = curl_slist_append(headerlist, buf);
if(curl) {
/* what URL that receives this POST */
curl_easy_setopt(curl, CURLOPT_URL,
http://mail.google.com/mail;);
curl_easy_setopt(curl, CURLOPT_PROXY, proxyname);
curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, User:Password);
/* only disable 100-continue header if explicitly requested */
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
res = curl_easy_perform(curl);
/* always cleanup */
curl_easy_cleanup(curl);
/* then cleanup the formpost chain */
curl_formfree(formpost);
curl_slist_free_all(headerlist
}
return 0;
}
Thanks
--
http://mail.python.org/mailman/listinfo/python-list
Post data using the libcurl
Hi,
I am newbie to programming with libcurl. the problem is i want to send
my gmail username and password outside the browser and get access to my
mail. this i am doing with LibCurl. Though i dont get any errors, i am
nt able to get the o/p Can anyone kindly help. i will attach the
program here
#include curl/curl.h
#include curl/types.h
#include curl/easy.h
int main(int argc, char *argv[])
{
CURL *curl;
CURLcode res;
struct curl_httppost *formpost=NULL;
struct curl_httppost *lastptr=NULL;
struct curl_slist *headerlist=NULL;
char buf[] = Expect:;
curl_global_init(CURL_GLOBAL_ALL);
/* Fill in the file upload field */
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, rajani.vemula,
CURLFORM_END);
/* Fill in the filename field */
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, x,
CURLFORM_END);
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, null,
CURLFORM_COPYCONTENTS, Sign in,
CURLFORM_END);
curl = curl_easy_init();
/* initalize custom header list (stating that Expect: 100-continue
is
not
wanted */
headerlist = curl_slist_append(headerlist, buf);
if(curl) {
/* what URL that receives this POST */
curl_easy_setopt(curl, CURLOPT_URL,
http://mail.google.com/mail;);
curl_easy_setopt(curl, CURLOPT_PROXY, proxyname);
curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, User:Password);
/* only disable 100-continue header if explicitly requested */
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
res = curl_easy_perform(curl);
/* always cleanup */
curl_easy_cleanup(curl);
/* then cleanup the formpost chain */
curl_formfree(formpost);
curl_slist_free_all(headerlist
}
return 0;
}
Thanks
--
http://mail.python.org/mailman/listinfo/python-list
Post data to http server using libcurl
Hi,
I am newbie to programming with libcurl. the problem is i want to send
my gmail username and password outside the browser and get access to my
mail. this i am doing with LibCurl. Though i dont get any errors, i am
nt able to get the o/p Can anyone kindly help. i will attach the
program here
#include curl/curl.h
#include curl/types.h
#include curl/easy.h
int main(int argc, char *argv[])
{
CURL *curl;
CURLcode res;
struct curl_httppost *formpost=NULL;
struct curl_httppost *lastptr=NULL;
struct curl_slist *headerlist=NULL;
char buf[] = Expect:;
curl_global_init(CURL_GLOBAL_ALL);
/* Fill in the file upload field */
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, rajani.vemula,
CURLFORM_END);
/* Fill in the filename field */
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, x,
CURLFORM_END);
curl_formadd(formpost,
lastptr,
CURLFORM_COPYNAME, null,
CURLFORM_COPYCONTENTS, Sign in,
CURLFORM_END);
curl = curl_easy_init();
/* initalize custom header list (stating that Expect: 100-continue
is
not
wanted */
headerlist = curl_slist_append(headerlist, buf);
if(curl) {
/* what URL that receives this POST */
curl_easy_setopt(curl, CURLOPT_URL,
http://mail.google.com/mail;);
curl_easy_setopt(curl, CURLOPT_PROXY, proxyname);
curl_easy_setopt(curl, CURLOPT_PROXYUSERPWD, User:Password);
/* only disable 100-continue header if explicitly requested */
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
res = curl_easy_perform(curl);
/* always cleanup */
curl_easy_cleanup(curl);
/* then cleanup the formpost chain */
curl_formfree(formpost);
curl_slist_free_all(headerlist
}
return 0;
}
Thanks
--
http://mail.python.org/mailman/listinfo/python-list
Re: profanity on comp.lang.python (was Re: Pyro stability)
Cliff Wells wrote: But of course not everyone is a double-edged sword that can just as easily be turned against either party. If we limit ourselves to saying what is going to be the most palatable for the widest audience we will most likely find ourselves confined to discussing the weather. I recall at this point the advice once given to writers submitting articles to Linux Journal: Be careful with humor. Sarcasm and irony are misread easily and can be offensive. Many readers have English as a second language and may not be familiar with your culture's running jokes and topical matters. http://www.linuxjournal.com/xstatic/author/authguide And of course, people who worry too much about impressing others rarely do. Just ask DHH of Ruby on Rails fame: http://static.flickr.com/47/127984254_ddd4363d6a_m.jpg Yes, but not everyone is happy about that: DHH has just got to stop saying [word elided] at conferences. https://www.lostlake.org/blog/index.php?/archives/11-The-Impending-Ruby-Fracture.html#c36 There's a clear difference between using profanity for dramatic effect (acceptable in various contexts) and going round like a twelve year old, mouthing off in an attempt to impress or shock people. [...] I'll apply an old software maxim (from sendmail?) to the topic of public interaction: Be liberal in what you accept, conservative in what you send. Applying this would suggest that both parties were equally at fault in this situation, so perhaps we can just leave it at that. I think this is reasonable advice. Paul -- http://mail.python.org/mailman/listinfo/python-list
[Ann] ctypes wiki
I have installed a wiki which could / should be used to document the ctypes package and ctypes related packages (like comtypes, for example). ctypes is a foreign function library for Python: http://starship.python.net/crew/theller/ctypes/ I hope the wiki will evolve over time into a useful resource. Currently there is no actual contents - so please contribute by adding tips, tricks, and whatever you have to share about ctypes. The wiki URL is: http://starship.python.net/crew/theller/wiki Thomas -- http://mail.python.org/mailman/listinfo/python-list
Antivirus Notification
InterScan Messaging Security Suite notification---BeginMessage--- The original message was received at Thu, 9 Nov 2006 13:26:55 +0100 from python.org [175.113.10.251] - The following addresses had permanent fatal errors - [EMAIL PROTECTED] - Transcript of the session follows - ... while talking to 132.36.179.145: DATA 400 We have removed message.zip(message.scr) from this email because it is not part of our content security policy.---End Message--- -- http://mail.python.org/mailman/listinfo/python-list
newbie class-building question
I am constructing a simple class to make sure I understand how classes work in Python (see below this paragraph). It works as expected, except the __add__ redefinition. I get the following in the Python interpreter: a=myListSub() a [] a+[5] Traceback (most recent call last): File stdin, line 1, in ? TypeError: 'str' object is not callable Please could you let me know where I am going wrong. I have hacked around with the code and tried googling this error message but am having difficulty finding the source of the problem. Many thanks Jon class myList: def __init__ (self,value=[]): self.wrapped=[] for x in value : self.wrapped.append(x) def __repr__ (self): return `self.wrapped` def __getattr__ (self,attrib): return getattr(self.wrapped,attrib,'attribute not found') def __len__ (self): return len(self.wrapped) def __getitem__ (self,k): return self.wrapped[k] def __add__(self,other): return self.wrapped+other class myListSub(myList): classCounter=0 def __init__ (self,value=[]): self.instanceCounter=0 myList.__init__(self,value) def __add__(self,other): myListSub.classCounter=myListSub.classCounter+1 self.instanceCounter=self.instanceCounter+1 myList.__add__(self,other) def getCounters (self): return classCounter=%s instanceCounter=%s % (myListSub.classCounter,self.classCounter) -- http://mail.python.org/mailman/listinfo/python-list
Re: substring search without using built in utils
do your homework and use regexes! but the find() and in() function works great for normal strings...why don't you want to use them? zeal elite a écrit : Hi, I am looking for substring search python program without using the built in funtions like find, or 'in'. Appreciate it. Thanks in advance. zeal _ Find a local pizza place, music store, museum and more...then map the best route! http://local.live.com?FORM=MGA001 -- http://mail.python.org/mailman/listinfo/python-list
Multithreaded C API Python questions
Hi A couple of mulithreaded C API python questions: I) The PyGILState_Ensure() simply ensures python api call ability, it doesnt actually lock the GIL, right? PyGILState_STATE gstate; gstate = PyGILState_Ensure(); II) Am I required to lock the GIL prior to running any python functions (in a threaded app)? PyThreadState *pts = PyGILState_GetThisThreadState(); PyEval_AcquireThread(pts); PyObject_CallObject(...); III) Shouldn't the GIL be released after 100 bytecodes or so to enable other waiting threads to get the GIL? I'm unable to get access to python as long as another python call is executing. The PyEval_AcquireThread() call blocks until the first call returns. I was hoping that the python system itself would release the GIL after some execution, but it itsnt. I am dependent upon the ability to have to threads executing in python land at the same time. How can this be done? Regards, Svein Seldal -- http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
On Nov 9, 6:52 am, BillJosephson [EMAIL PROTECTED] wrote: ... If anyone knows why i can't connect, in info about it would be a big help. Sounds like the default mirror is down. Go to Utilities - Global Options - Plugin Manager and click on Update mirror list. Choose a new mirror and try again. If that still fails, it may be that you need to set up your proxy server properly. -- http://mail.python.org/mailman/listinfo/python-list
Re: assigning values in __init__
On Thu, 09 Nov 2006 10:36:07 +, Antoon Pardon wrote:
On 2006-11-09, Steven D'Aprano [EMAIL PROTECTED] wrote:
On Thu, 09 Nov 2006 12:27:12 +1100, Ben Finney wrote:
John Salerno [EMAIL PROTECTED] writes:
Ben Finney wrote:
If you pass a *mapping* of the
I-might-want-to-add-more-in-the-future values, then you get both
explicit *and* expandable, without an arbitrary unneeded sequence.
Do you mean by using the **kwargs parameter?
No.
Well, that'll teach me to put words in your mouth.
[snip]
If you have a group of named, semantically-related, unsequenced values,
pass them into the function as a mapping object (a dict object).
Still, if you are doing this:
mapping_object = {strength: roll_dice(10),
intelligence:roll_dice(10),
dexterity:roll_dice(10)}
my_character = Character(mapping_object)
then there is little benefit to building the dict just for the purposes of
passing it to Character(), never to use it again, not when you can do this:
my_character = Character(strength: roll_dice(10),
intelligence:roll_dice(10), dexterity:roll_dice(10))
But you will have to adapt this if you want extra or different
characteristics.
Sure, but only in one place:
# now have charisma
my_character = Character(strength=roll_dice(8),
intelligence=roll_dice(12), dexterity=roll_dice(20),
charisma=roll_dice(6))
If all the char attributes are initialised with the same function, it
may make sense to set them in a loop, as you do below. But if they are all
calculated differently, as above, then you lose the benefit of a loop.
Personnally I would prefer something like:
chardict = {}
for char in characteristics:
chardict[char] = roll_dice(10)
my_character = Character(chardict)
This way you only have to keep your characteristics in one place.
As I do.
Remember, the prerequisite for my suggestion to make sense is that, once
you've created your initial character attributes and stuck them in a dict,
you never use the dict again. Also, I'm assuming the constraint that there
is a manageably small number of character attributes.
If you happen to already have collected your character attributes in a
mapping object for some other reason, then well and good, pass it into the
function. Otherwise, well, I believe the correct container for
character attributes is a Character, not a dict.
What is wrong with keeping the character attributes in a dict in the
Character?
For the same reason we typically say object.attribute rather than
object.__dict__[attribute]
Perhaps you missed the original post, where one of the constraints was
that character attributes in the game were also object attributes. E.g.
class Character(object):
def __init__(self, strength):
self.strength = strength
The question posed was, what is the best way of calling __init__ with
values for those character attributes?
If the character attributes vary at runtime, or there are many of them, or
if they are needed together (rather than individually) in multiple places
apart from Character.__init__, then it makes sense to bundle them up in a
dict and pass the dict around, like Ben and now you are suggesting.
But if the character attributes are not varying, and there are only a few,
and they only get used collectively for Character.__init__, then I don't
believe there is any advantage to putting them in a dict to be used once
and then tossed away.
To give an analogy, if you are writing a coordinate class, you would
likely do something like this:
class Coord(object):
def __init__(self, x, y):
self.x = x
self.y = y
If you had a lot of dimensions, you'd change your entire model:
class Coord(object):
def __init__(self, alist):
self.coordinates = alist
But it is unlikely that a tactic like this would be worth the extra work:
class Coord(object):
def __init__(self, mapping_object):
# check that mapping_object has the right keys
expected = ['x', 'y']
for key in expected:
if key not in mapping_object.keys(): raise KeyError
# do something with mapping_object
self.__dict__.update(mapping_object)
mapping = {'x': some_value, 'y': some_value}
point = Coord(mapping)
del mapping # never use it again after construction
--
Steven.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
Vim, it can handle all the things.http://www.vim.org/ I'm not convinced of that quite yet. jEdit's syntax highlighting seems more robust (see SocketServer.py in the standard library for an example - vim gets the highlighting of the first doc-comment wrong). I've also not found anything like jEdit's Console plugin for vim. It's interactive. You can run the current buffer in the console window. The console interacts with an error reporting pane which allows you to click on the error and it will take you to the appropriate line in the code that the stack trace indicates. The only thing I have found for vim (and it is specific to running Python code) is the runscript.vim plugin, which merely allows you to view the stdout from the script in a different buffer. It doesn't allow you to interact (say you are writing a console based interactive application for example) nor does it have all of those other features I mentioned. I'm very interested in other people's vim setup for Python coding however, as I do use vim more than Python these days, mainly because I have to use it a great deal on headless servers (jEdit would be no good here of course) and I got fed up with adding artefacts such as extraneous i's, o's and :w's into my code when working with jEdit ;-) And it starts faster of course. -- http://mail.python.org/mailman/listinfo/python-list
Re: Multithreaded C API Python questions
Svein Seldal wrote: Hi A couple of mulithreaded C API python questions: I) The PyGILState_Ensure() simply ensures python api call ability, it doesnt actually lock the GIL, right? PyGILState_STATE gstate; gstate = PyGILState_Ensure(); II) Am I required to lock the GIL prior to running any python functions (in a threaded app)? PyThreadState *pts = PyGILState_GetThisThreadState(); PyEval_AcquireThread(pts); PyObject_CallObject(...); III) Shouldn't the GIL be released after 100 bytecodes or so to enable other waiting threads to get the GIL? I'm unable to get access to python as long as another python call is executing. The PyEval_AcquireThread() call blocks until the first call returns. I was hoping that the python system itself would release the GIL after some execution, but it itsnt. I am dependent upon the ability to have to threads executing in python land at the same time. How can this be done? PyGILState_Ensure/Release guarantees to establish the GIL - even if it was already held (useful if you deal with complex call ordering/dependencies) PyObject_CallObject(...) calls Python code. Thus the interpreter will switch and do as usuall during that. In your/C/system... code you are responsible to release the GIL or not to enable other Python threads (and prevent from deadlocks) Usually you'd do this * if you do time consuming C/system stuff * or if the code can possibly renter Python through the system (e.g. when you call a Windows function which itself can create Windows messages to be routed back into Python message handlers) -robert -- http://mail.python.org/mailman/listinfo/python-list
Re: substring search without using built in utils
On Thu, 09 Nov 2006 03:31:02 -0800, John Machin wrote: Bruno Desthuilliers wrote: Gabriel Genellina wrote: At Wednesday 8/11/2006 22:29, zeal elite wrote: I am looking for substring search python program without using the built in funtions like find, or 'in'. The only reasonable usage for such a constraint would be a school assignment so: don't cheat and do your homework! OTHO, looking for existing solutions to a same or similar problem and studying them is usually considerer good practice in real-life programming jobs !-) Looking at an existing solution for substring search that was coded in Python, instead of using the built-in functionality would IMHO be considered extremely bad practice in a real-life programming job. Sure. But what if the data type in question wasn't a string, but a list? Given a source list, find the offset of a target sub-list within the source list, in other words, find for lists. i.e. search(source, target) returns n if source[n:n+len(target)] == target for any sequence type. Yes, I know I'm changing the constraints of the problem. Now for a real challenge, change the search from a one-dimensional data structure to two. (The solution is left as an exercise for the class.) -- Steve. -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie class-building question
jrpfinch wrote: I am constructing a simple class to make sure I understand how classes work in Python (see below this paragraph). It works as expected, except the __add__ redefinition. I get the following in the Python interpreter: a=myListSub() a [] a+[5] Traceback (most recent call last): File stdin, line 1, in ? TypeError: 'str' object is not callable Please could you let me know where I am going wrong. I have hacked around with the code and tried googling this error message but am having difficulty finding the source of the problem. class myList: def __init__ (self,value=[]): self.wrapped=[] for x in value : self.wrapped.append(x) def __repr__ (self): return `self.wrapped` def __getattr__ (self,attrib): return getattr(self.wrapped,attrib,'attribute not found') When Python is looking for an attribute that neither exists in myList nor the 'wrapped' list, you give back a string. In your case this happens for the __coerce__() method, and the interpreter ends up calling attribute not found which of course must fail. The solution: - Don't provide a bogus default for getattr(), and get a traceback that is easier to understand. - Use new-style classes (i.e. class myList(object): ...) which look for special methods in the class, not the instance. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie class-building question
jrpfinch wrote: I am constructing a simple class to make sure I understand how classes work in Python (see below this paragraph). It works as expected, except the __add__ redefinition. I get the following in the Python interpreter: a=myListSub() a [] a+[5] Traceback (most recent call last): File stdin, line 1, in ? TypeError: 'str' object is not callable Please could you let me know where I am going wrong. I have hacked around with the code and tried googling this error message but am having difficulty finding the source of the problem. Many thanks Jon class myList: def __init__ (self,value=[]): self.wrapped=[] for x in value : self.wrapped.append(x) def __repr__ (self): return `self.wrapped` def __getattr__ (self,attrib): return getattr(self.wrapped,attrib,'attribute not found') def __len__ (self): return len(self.wrapped) def __getitem__ (self,k): return self.wrapped[k] def __add__(self,other): return self.wrapped+other class myListSub(myList): classCounter=0 def __init__ (self,value=[]): self.instanceCounter=0 myList.__init__(self,value) def __add__(self,other): myListSub.classCounter=myListSub.classCounter+1 self.instanceCounter=self.instanceCounter+1 myList.__add__(self,other) def getCounters (self): return classCounter=%s instanceCounter=%s % (myListSub.classCounter,self.classCounter) I'm not sure what you're trying to achieve with the __getattr__ in myList, but the reason your __add__ isn't working is that when a + [5] is executed, Python tries to find a __coerce__ attribute (to prove this just put a print attrib as the first line of your __getattr__). Your customer __getattr__ returns a default string object of 'attribute not found', when it fails to locate this. Python then attempts to call this string, and as your exception states -- strings aren't callable. That should give you enough information to be going onwith. Also, if you're trying to get use to classes, I would suggest you start off with the 'new-style' classes; those are the ones that derive from object. A quick google for new-style classes will sort you. hth a bit, Jon. -- http://mail.python.org/mailman/listinfo/python-list
Re: assigning values in __init__
Steven D'Aprano wrote:
On Thu, 09 Nov 2006 12:27:12 +1100, Ben Finney wrote:
John Salerno [EMAIL PROTECTED] writes:
Ben Finney wrote:
If you pass a *mapping* of the
I-might-want-to-add-more-in-the-future values, then you get both
explicit *and* expandable, without an arbitrary unneeded sequence.
Do you mean by using the **kwargs parameter?
No.
Well, that'll teach me to put words in your mouth.
[snip]
If you have a group of named, semantically-related, unsequenced values,
pass them into the function as a mapping object (a dict object).
Still, if you are doing this:
mapping_object = {strength: roll_dice(10),
intelligence:roll_dice(10),
dexterity:roll_dice(10)}
my_character = Character(mapping_object)
then there is little benefit to building the dict just for the purposes of
passing it to Character(), never to use it again, not when you can do this:
my_character = Character(strength: roll_dice(10),
intelligence:roll_dice(10), dexterity:roll_dice(10))
Except, of course, that you *can't* do that: I think you meant to use
equals signs instead of colons?
If you happen to already have collected your character attributes in a
mapping object for some other reason, then well and good, pass it into the
function. Otherwise, well, I believe the correct container for
character attributes is a Character, not a dict.
regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://holdenweb.blogspot.com
Recent Ramblings http://del.icio.us/steve.holden
--
http://mail.python.org/mailman/listinfo/python-list
Re: Problem getting a file pathname with tkFileDialog
On 2006-11-09, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: you could also use encode(iso-8859-1) to nterpret just the printed name such as: print myfilename.encode(iso-8859-1) and by the way if you wanted the file NAME you could have used openfilename() instead of openfile();-) The encoding of the filenames in the file system is available from sys.getfilesystemencoding(). That might turn out to be useful when interpreting them. -- Neil Cerutti Strangely, in slow motion replay, the ball seemed to hang in the air for even longer. --David Acfield -- http://mail.python.org/mailman/listinfo/python-list
Re: IndentationError: expected an indented block
Antonios Katsikadamos wrote: hi all. I am using python 2.4. I have to run an older python code and when i run it i get the following message IndentationError: expected an indented block. 1)what does this mean? Just what it did the first time you asked. This is a troll to get your sponsored link published, isn't it? regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: Multithreaded C API Python questions
robert wrote: PyGILState_Ensure/Release guarantees to establish the GIL - even if it was already held (useful if you deal with complex call ordering/dependencies) I understand this to mean that I dont need to explicitly lock the GIL (with PyEval_AcquireLock() or PyEval_AcquireThread()). Well I cant figure out the PyGILState_Ensure() because if I only use this function to establish the GIL, when calling python, python will shortly after crash with Fatal Python error: ceval: tstate mix-up. This happens consistently when the main app and the extra thread has called python and both are busy executing python code. PyObject_CallObject(...) calls Python code. Thus the interpreter will switch and do as usuall during that. BTW What do you mean by switch? In your/C/system... code you are responsible to release the GIL or not to enable other Python threads (and prevent from deadlocks) Usually you'd do this * if you do time consuming C/system stuff * or if the code can possibly renter Python through the system (e.g. when you call a Windows function which itself can create Windows messages to be routed back into Python message handlers) The main problem is that not done this way, it's the other way around. My main C app will call a python function which will be a lengthy time consuming process. The main C app will call python and it will never return from PyObject_CallObject(...), while the extra thread should call a py function to deliver occational messages into C. Svein -- http://mail.python.org/mailman/listinfo/python-list
Lists of lists and tuples, and finding things within them
I have a program that keeps some of its data in a list of tuples. Sometimes, I want to be able to find that data out of the list. Here is the list in question:
[('password01', 'unk'), ('host', 'dragonstone.org'), ('port', '1234'), ('character01', 'Thessalus')]
For a regular list, I could do something like x.index('host') and find the index of it, but I don't know how to do this for a tuple where the data item isn't known in advance. For example, I want to get the host entry from the list above; but I can only retrieve it if I know what it contains (e.g., x.index(('host', 'dragonstone.org'))).
Is there a better way to do this than a construct similar the following?
for key, value in x:
if key == 'host':
print value
Thanks in advance!
Mike
--
Michael B. Trausch
[EMAIL PROTECTED]
Phone: (404) 592-5746
Jabber IM: [EMAIL PROTECTED]
Demand Freedom! Use open and free protocols, standards, and software!
--
http://mail.python.org/mailman/listinfo/python-list
Re: newbie class-building question
Thank you this is very helpful. The only thing I now don't understand is why it is calling __coerce__. self.wrapped and other are both lists. Thanks Jon -- http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
On 2006-11-09, Ant [EMAIL PROTECTED] wrote: Vim, it can handle all the things.http://www.vim.org/ I'm not convinced of that quite yet. jEdit's syntax highlighting seems more robust (see SocketServer.py in the standard library for an example - vim gets the highlighting of the first doc-comment wrong). Code inside strings, e.g., doctests, breaks the synchronization code. I fixed this for myself by adopting the convention in my code that all closing are at the end of a line, while opening never are. Then I changed the synchronize declarations in /syntax/python.vim to the following: syn sync match pythonSync grouphere NONE '$' syn sync maxlines=300 The above is no good for random Python code, though. But in random Python code you can simply increase the number of lines inspected as high as your machine can handle, as documented in python.vim. I've also not found anything like jEdit's Console plugin for vim. It's interactive. You can run the current buffer in the console window. The console interacts with an error reporting pane which allows you to click on the error and it will take you to the appropriate line in the code that the stack trace indicates. I haven't got that working in Vim, because I haven't been irritated enough by its lack to try. Python's extremely verbose error reports make designing errorformat a little tricky, but it can be done, and the day may come soon. The reason I haven't adapted quickfix mode to Python is that Vim would hide most of the Traceback. I'd constantly be executing the command to show the entire error message, so I've chosen to eschew quickfix mode for Python code. If there's some quickfix mode settings that solve these problems I'd be happy to purloin it. I'm very interested in other people's vim setup for Python coding however, as I do use vim more than Python these days, mainly because I have to use it a great deal on headless servers (jEdit would be no good here of course) and I got fed up with adding artefacts such as extraneous i's, o's and :w's into my code when working with jEdit ;-) And it starts faster of course. The default Python plugin provides the [[, ]] and [m, ]m commands for jumping to the next function or method respectively. They are a nice help once you're aware of them. There's a more powerful plugin available on the internet, but it the code-jumps were the main commands I wanted. pytags should be in your Tools directory. I haven't found it terribly useful, but in theory it's invaluable (my project is piddly in size at the moment). If you set shiftwidth to your preferred Python indent, then indenting and unindenting code blocks is as easy as the and commands. -- Neil Cerutti -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie class-building question
jrpfinch wrote: Thank you this is very helpful. The only thing I now don't understand is why it is calling __coerce__. self.wrapped and other are both lists. Yes, but in a + [5], *a* is a myListSub object -- it's not a list! So __coerce__ is called to try and get a common type... Try this in myList... # We could check the type of 'other' to determine what we return here # At the moment, we return a list, whose + operator, requires another list so this works # and gives an exception if it's not for us def __coerce__(self,other): return self.wrapped, other # def __add__(self,other): return self + other hth Jon. -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorted list - how to change it
Tim Chase [EMAIL PROTECTED] wrote:
Just a caveat from past experience...while the OP was talking
about lists, for future reference random.shuffle() chokes on
strings (and possibly tuples). It requires the ability to edit
the target/parameter in place...a functionality that strings
don't provide.
You can always use array.array('c'), eg
import random
import array
L = array.array('c')
L.fromstring(hello)
L
array('c', 'hello')
random.shuffle(L)
L
array('c', 'elohl')
L.tostring()
'elohl'
Which is some way towards a mutable string...
--
Nick Craig-Wood [EMAIL PROTECTED] -- http://www.craig-wood.com/nick
--
http://mail.python.org/mailman/listinfo/python-list
Re: How to choose the right GUI toolkit ?
Christophe [EMAIL PROTECTED] wrote: Nick Craig-Wood a écrit : There is also PyQT which we wrote off as we wanted to write commercial applications too. As it happens we have a commercial QT licence, but we decided we didn't want to have to incurr the additional expense of renewing it. Note: Nothing in the GPL prevents you from writting commecial software ;) A completely valid point! s/commercial applications/closed source applications/ would be more accurate. However, in this case, our customer didn't want the source code released as it contained some of their confidential stuff. -- Nick Craig-Wood [EMAIL PROTECTED] -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
Re: Exploiting Dual Core's with Py_NewInterpreter's separated GIL ?
Paul Boddie wrote: My impression is that POSH isn't maintained any more and that work was needed to make it portable, as you have observed. Some discussions did occur on one of the Python development mailing lists about the possibility of using shared memory together with serialisation representations faster than pickles (which also don't need to be managed as live objects by Python), and I think that this could be an acceptable alternative. ... your impression is correct, when I contacted the author some while ago he maintained that it was a proof of concept only. When I compiled this today with python-2.4.2 the example fails with this rather cryptic message ~/devel/posh/examples: $ python Matrix.py Traceback (most recent call last): File Matrix.py, line 6, in ? import posh File /usr/local/lib/python2.4/site-packages/posh/__init__.py, line 14, in ? import _core RuntimeError: semaphore set creation failed but that's most likely something to do with not allocating a semaphore of the right sort or something. I think it uses sysv semaphores and although freeBSD 6 has them perhaps there's something I need to do to allow them to work. Paul -- Robin Becker -- http://mail.python.org/mailman/listinfo/python-list
UnboundLocalError
hi all why it generates an UnboundLocalError when I do the following: code ... def main(): number = number() number_user = user_guess() while number_user != number: check_number(number = number, number_user = number_user) number_user = user_guess() UnboundLocalError: local variable 'number' referenced before assignment /code I found when I changed the number() to num() or whatever the issue solved but doesn't every function has its own namespace? Can anyone please explain it to me? Peace -- http://mail.python.org/mailman/listinfo/python-list
Re: help using smtplib to work ..
At Thursday 9/11/2006 00:45, Jordan wrote: Your post was definitely the most helpful for me. For some reason, smtp for gmail seems to require that you call server.ehlo() a second time, after having called server.starttls(), otherwise, the server won't accept authorization. Thanks. That's clearly stated on the docs for the starttls method: http://docs.python.org/lib/SMTP-objects.html -- Gabriel Genellina Softlab SRL __ Correo Yahoo! Espacio para todos tus mensajes, antivirus y antispam ¡gratis! ¡Abrí tu cuenta ya! - http://correo.yahoo.com.ar -- http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
On Nov 9, 2:11 pm, Neil Cerutti [EMAIL PROTECTED] wrote: ... never are. Then I changed the synchronize declarations in /syntax/python.vim to the following: syn sync match pythonSync grouphere NONE '$' syn sync maxlines=300 The above is no good for random Python code, though. But in random Python code you can simply increase the number of lines inspected as high as your machine can handle, as documented in python.vim. I commented out the maxlines line, and uncommented the syn sync minlines=2000 line, and that seems to have worked. The reason I haven't adapted quickfix mode to Python is that Vim would hide most of the Traceback. I'd constantly be executing the command to show the entire error message, so I've chosen to eschew quickfix mode for Python code. Sounds interesting - I may take a look at it. ... default Python plugin provides the [[, ]] and [m, ]m commands for jumping to the next function or method respectively. They are a nice help once you're aware of them. There's a more powerful plugin available on the internet, but it the code-jumps were the main commands I wanted. They sound good. I've been using the taglist.vim plugin for code browsing which is pretty good for that sort of thing. pytags should be in your Tools directory. I haven't found it terribly useful, but in theory it's invaluable (my project is piddly in size at the moment). I'll take a look. A code navigation tool I presume? If you set shiftwidth to your preferred Python indent, then indenting and unindenting code blocks is as easy as the and commands Yes - I have that set up. Thanks for the tips :-) -- http://mail.python.org/mailman/listinfo/python-list
Re: pack a three byte int
In article [EMAIL PROTECTED],
[EMAIL PROTECTED] wrote:
Can Python not express the idea of a three-byte int?
For instance, in the working example below, can we somehow collapse the
three calls of struct.pack into one?
import struct
skip = 0x123456 ; count = 0x80
cdb = ''
cdb += struct.pack('B', 0x08)
cdb += struct.pack('I', skip)[-3:]
cdb += struct.pack('BB', count, 0)
Why not something like this:
skip += struct.pack(L, skip)[1:]
Dave
--
http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
Ant wrote: Vim, it can handle all the things.http://www.vim.org/ I'm not convinced of that quite yet. jEdit's syntax highlighting seems more robust (see SocketServer.py in the standard library for an example - vim gets the highlighting of the first doc-comment wrong). I've also not found anything like jEdit's Console plugin for vim. It's interactive. You can run the current buffer in the console window. The console interacts with an error reporting pane which allows you to click on the error and it will take you to the appropriate line in the code that the stack trace indicates. The only thing I have found for vim (and it is specific to running Python code) is the runscript.vim plugin, which merely allows you to view the stdout from the script in a different buffer. It doesn't allow you to interact (say you are writing a console based interactive application for example) nor does it have all of those other features I mentioned. I'm very interested in other people's vim setup for Python coding however, as I do use vim more than Python these days, mainly because I have to use it a great deal on headless servers (jEdit would be no good here of course) and I got fed up with adding artefacts such as extraneous i's, o's and :w's into my code when working with jEdit ;-) And it starts faster of course. Ant: Great. Can you help me get it? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: Question regarding lists and regex
On Nov 9, 6:29 am, Prabhu Gurumurthy [EMAIL PROTECTED] wrote:
...
regex: I presume this is rather a dumb question, anyways here it comes! as you
can see from my program, pattIp = r\d{1,3}\ etc, is there any other easy
way
to group the reptitions, instead of typing the same regex 4 times.
...
pattIp = r'\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}'
pattIp = r\d{1,3}(\.\d{1,3}){3}
Is the best you can get using pure regexes (rather than something like
Paul's solution).
--
http://mail.python.org/mailman/listinfo/python-list
Re: pack a three byte int
Sorry, that should have been: cdb += struct.pack(L, skip)[1:] Dave -- http://mail.python.org/mailman/listinfo/python-list
Re: UnboundLocalError
Hello,
Camellia wrote:
why it generates an UnboundLocalError when I do the following:
code
...
def main():
number = number()
number_user = user_guess()
while number_user != number:
check_number(number = number, number_user = number_user)
number_user = user_guess()
UnboundLocalError: local variable 'number' referenced before assignment
/code
I found when I changed the number() to num() or whatever the issue
solved
but doesn't every function has its own namespace?
Can anyone please explain it to me?
When Python compiles your code, it sees that you are using a local
variable 'number' in this function ('number = ...') and probably allocates
some memory for it or whatever - ask the core Python hackers for details.
When this statement is executed, the right hand side is evaluated first and
Python finds a reference to 'number'. It knows that number is a local
variable in main(), but has not been assigned yet (which would happend
after the right hand side is evaluated) - thus the error.
Even if you could get this to work, you have two 'number's in the function
with different meaning, which just makes understanding the code too
difficult.
Is number() (the global one) a function or class. I guess it's a function,
so I would suggest to name it 'get_number' (and same
for 'get_user_guess') - this makes the code more descriptive. Should it
really be a class, a common convention is to capitalize it 'Number()'.
HTH
--
Benjamin Niemann
Email: pink at odahoda dot de
WWW: http://pink.odahoda.de/
--
http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
Ant wrote: I do use vim more than Python these days What does that mean? Are you referring to all the setup involved with vim? -- http://mail.python.org/mailman/listinfo/python-list
Re: How to choose the right GUI toolkit ?
Nick Craig-Wood wrote: So, is there another toolkit I should be looking at? I highly recommend wxPython. I'd second that! There is a book also WxPython in Action Oh yeah, how could I forget The Book! :) It's great to read straight through, and also a fantastic reference, and covers just about all there is to know to get very far in wxPython. -- http://mail.python.org/mailman/listinfo/python-list
Re: is this the right way to do subclasses?
Bruno Desthuilliers wrote: John Salerno a écrit : Peter Otten wrote: You may need a no-op implementation of fix_attributes() in the Character class. What does that mean? Is that in case I use Character directly to create an object? Most propbably it can be useful for other character classes that don't need too fix attributes. Ah, I get it! -- http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
Ant wrote: On Nov 9, 6:52 am, BillJosephson [EMAIL PROTECTED] wrote: ... If anyone knows why i can't connect, in info about it would be a big help. Sounds like the default mirror is down. Go to Utilities - Global Options - Plugin Manager and click on Update mirror list. Choose a new mirror and try again. If that still fails, it may be that you need to set up your proxy server properly. Woo hoo! It worked! Now of course it was a dumb question to begin with. May I ask another quetion? I don't want to mess with lots of plugins at this point. What are the minimum plugins to get a typical looking IDE with a code window and output window and that lets me set breakpoints and step through code? Thanks a lot Ant, I appreciate your help. -- http://mail.python.org/mailman/listinfo/python-list
Re: is this the right way to do subclasses?
Steve Holden wrote: Wait, I just might be an idiot. Is it not even necessary for me to call Character's __init__ method? Fighter will inherit it automatically and call it when a Fighter object is created, right? By Jove, he's got it! But I was thinking...even though there are better ways to do it than what I did, I wasn't too far off the mark since I really *was* overriding the __init__ and doing some extra initializing of my own in each subclass. It was just a terribly ugly way to do it. :) -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: PyQt v4.1 Released
David Boddie a écrit : Do you mean the example from the PyQt4 distribution? Yes, that was it. That uses a port of an old syntax highlighting example from Qt 4.0. Someone needs to port the C++ example from Qt 4.2 to PyQt4. So, we've got no sample to use QScintilla2 ?? Thanks, 6TooL9 -- http://mail.python.org/mailman/listinfo/python-list
extract text from a string
Hallo all, I have tried for a couple of hours to solve my problem with re but I have no success. I have a string containing: +abc_cde.fgh_jkl\n and what I need to become is abc_cde.fgh_jkl. Could anybody be so kind and write me a code of how to extract this text from that string? thank you very much in advance regards, boris -- http://mail.python.org/mailman/listinfo/python-list
Re: extract text from a string
[EMAIL PROTECTED] wrote: Hallo all, I have tried for a couple of hours to solve my problem with re but I have no success. I have a string containing: +abc_cde.fgh_jkl\n and what I need to become is abc_cde.fgh_jkl. Could anybody be so kind and write me a code of how to extract this text from that string? Perhaps if you described what the actual *criteria* is for the translation; for instance, I need to keep only letters, numbers and punctuation characters etc... Going by your example, it's tempting to suggest the best method would be string_name[1:-1] and that you don't need a regex. Jon. -- http://mail.python.org/mailman/listinfo/python-list
Re: extract text from a string
On 9 Nov 2006 07:45:25 -0800, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
I have a string containing: +abc_cde.fgh_jkl\n and what I need to
become is abc_cde.fgh_jkl. Could anybody be so kind and write me a
code of how to extract this text from that string?
for that particular string
+abc_cde.fgh_jkl\n[1:-1]
'abc_cde.fgh_jkl'
+abc_cde.fgh_jkl\n.strip()[1:]
'abc_cde.fgh_jkl'
+abc_cde.fgh_jkl\n[1:].strip()
'abc_cde.fgh_jkl'
+abc_cde.fgh_jkl\n[1:].strip().replace('+','')
'abc_cde.fgh_jkl'
+abc_cde.fgh_jkl\n[1:].replace('\n','').replace('+','')
'abc_cde.fgh_jkl'
I'm sure there are other ways too !!
HTH :)
--
http://mail.python.org/mailman/listinfo/python-list
Re: extract text from a string
Jon Clements wrote:
I have a string containing: +abc_cde.fgh_jkl\n and what I need to
become is abc_cde.fgh_jkl. Could anybody be so kind and write me a
code of how to extract this text from that string?
[...] Going by your example, it's tempting to suggest the best method
would be string_name[1:-1] and that you don't need a regex.
...or string_name.lstrip('+').rstrip('\n')
I bet he doesn't need a regexp!
Cheers,
--
Roberto Bonvallet
--
http://mail.python.org/mailman/listinfo/python-list
Re: ANN: PyQt v4.1 Released
Tool69 wrote: That uses a port of an old syntax highlighting example from Qt 4.0. Someone needs to port the C++ example from Qt 4.2 to PyQt4. So, we've got no sample to use QScintilla2 ?? Well, this should get you started: import sys from PyQt4.QtGui import QApplication from PyQt4.Qsci import QsciScintilla, QsciLexerPython if __name__ == __main__: app = QApplication(sys.argv) editor = QsciScintilla() lexer = QsciLexerPython() editor.setLexer(lexer) editor.show() editor.setText(open(qscintilla2_example.py).read()) sys.exit(app.exec_()) QScintilla provides a selection of different lexers, so you might want to experiment with those. Good luck! David -- http://mail.python.org/mailman/listinfo/python-list
Re: extract text from a string
On 2006-11-09, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hallo all, I have tried for a couple of hours to solve my problem with re but I have no success. I have a string containing: +abc_cde.fgh_jkl\n and what I need to become is abc_cde.fgh_jkl. Could anybody be so kind and write me a code of how to extract this text from that string? s = +abc_cde.fgh_jkl\n s[1:-1] 'abc_cde.fgh_jkl' -- Grant Edwards grante Yow! ... I think I'm at having an overnight visi.comsensation right now!! -- http://mail.python.org/mailman/listinfo/python-list
Py3K idea: why not drop the colon?
Can anyone find a flaw with this change in syntax? Instead of dividing a compound statement with a colon, why not divide it on a newline? For example, the colon could be dropped from this statement: if self.hungry: self.eat() to if self.hungry self.eat() Python is already sensitive to whitespace and the newline anyway, so why not put it to good use? For example, Python rejects this statement because of the newline present: if self.hungry or self.depressed: self.eat() You need to use the backslash to continue the expression on the next line: if self.hungry or \ self.depressed: self.eat() The colon that divides the statement therefore seems redundant. The colon could continue to be used for single-line statements: if self.hungry: self.eat() I think the colon could be omitted from every type of compound statement: 'if', 'for', 'def', 'class', whatever. Am I missing anything? Thanks, - Mike -- http://mail.python.org/mailman/listinfo/python-list
Re: More elegant way to obtain ACLs / permissions for windows directories than using cacls dos command?
There are some examples of using the security descriptor objects in \Lib\site-packages\win32\Demos\security. Also, searching the Python-win32 mailing list should turn up some more code. Thanks again Roger. -- http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
Ant [EMAIL PROTECTED] skriver: Vim, it can handle all the things.http://www.vim.org/ I'm not convinced of that quite yet. jEdit's syntax highlighting seems more robust (see SocketServer.py in the standard library for an example - vim gets the highlighting of the first doc-comment wrong). I've also I can't see that problem at all. Vim 7.0 standard win32 build and 6.4 on OpenBSD. My vimrc hold and old rule that I'm not sure is needed or how it works against the new standard python module: :au BufEnter *.py :set smarttab smartindent \ cinwords=if,elif,else,for,while,def,try,rxcept,finally,class I have not yet seen any problenm from it but maybe it's time to remote it soon. / Balp -- http://anders.arnholm.nu/Keep on Balping -- http://mail.python.org/mailman/listinfo/python-list
Re: Py3K idea: why not drop the colon?
Michael Hobbs wrote: I think the colon could be omitted from every type of compound statement: 'if', 'for', 'def', 'class', whatever. Am I missing anything? The FAQ answer. ;-) http://www.python.org/doc/faq/general/#why-are-colons-required-for-the-if-while-def-class-statements Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Py3K idea: why not drop the colon?
In [EMAIL PROTECTED], Michael Hobbs wrote: Python is already sensitive to whitespace and the newline anyway, so why not put it to good use? For example, Python rejects this statement because of the newline present: if self.hungry or self.depressed: self.eat() You need to use the backslash to continue the expression on the next line: if self.hungry or \ self.depressed: self.eat() You don't need the backslash if you use parenthesis: if (self.hungry or self.depressed): self.eat() I think the colon could be omitted from every type of compound statement: 'if', 'for', 'def', 'class', whatever. Am I missing anything? I would miss auto-indenting in my editor to which the colon at the line end is an important clue. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: Py3K idea: why not drop the colon?
Paul Boddie wrote: Michael Hobbs wrote: I think the colon could be omitted from every type of compound statement: 'if', 'for', 'def', 'class', whatever. Am I missing anything? The FAQ answer. ;-) http://www.python.org/doc/faq/general/#why-are-colons-required-for-the-if-while-def-class-statements Paul I knew there was a document somewhere that I missed. ;-) I even scanned all the Py3K PEPs before posting. Anyway, the FAQ answer seems to be a weak argument to me. But if the BDFL insists that it remains, why not take the converse approach? That is, assume that the expression ends at the colon, not at the newline. That would make this type of statement possible: if color == red or color == blue or color == green: return 'primary' Right now, such a statement would have to be spelled thus: if color == red or \ color == blue or \ color == green: return 'primary' or if (color == red or color == blue or color == green): return 'primary' -- http://mail.python.org/mailman/listinfo/python-list
Re: assigning values in __init__
On 2006-11-09, Steven D'Aprano [EMAIL PROTECTED] wrote:
On Thu, 09 Nov 2006 10:36:07 +, Antoon Pardon wrote:
On 2006-11-09, Steven D'Aprano [EMAIL PROTECTED] wrote:
On Thu, 09 Nov 2006 12:27:12 +1100, Ben Finney wrote:
John Salerno [EMAIL PROTECTED] writes:
Ben Finney wrote:
If you pass a *mapping* of the
I-might-want-to-add-more-in-the-future values, then you get both
explicit *and* expandable, without an arbitrary unneeded sequence.
Do you mean by using the **kwargs parameter?
No.
Well, that'll teach me to put words in your mouth.
[snip]
If you have a group of named, semantically-related, unsequenced values,
pass them into the function as a mapping object (a dict object).
Still, if you are doing this:
mapping_object = {strength: roll_dice(10),
intelligence:roll_dice(10),
dexterity:roll_dice(10)}
my_character = Character(mapping_object)
then there is little benefit to building the dict just for the purposes of
passing it to Character(), never to use it again, not when you can do this:
my_character = Character(strength: roll_dice(10),
intelligence:roll_dice(10), dexterity:roll_dice(10))
But you will have to adapt this if you want extra or different
characteristics.
Sure, but only in one place:
Are your sure? The OP had subclasses like Fighter, Mage etc.
So it seems that you have to do something like this for
every such subclass. Or am I missing something.
# now have charisma
my_character = Character(strength=roll_dice(8),
intelligence=roll_dice(12), dexterity=roll_dice(20),
charisma=roll_dice(6))
If all the char attributes are initialised with the same function, it
may make sense to set them in a loop, as you do below. But if they are all
calculated differently, as above, then you lose the benefit of a loop.
Not necesarily. You could have a table as follows:
characteristics = [(strength, partial(roll_dice, 8)),
(inteligence , partial(roll_dice, 12),
...
chardict={}
for char, roller in characteristics:
chardict[char] = roller()
Personnally I would prefer something like:
chardict = {}
for char in characteristics:
chardict[char] = roll_dice(10)
my_character = Character(chardict)
This way you only have to keep your characteristics in one place.
As I do.
Remember, the prerequisite for my suggestion to make sense is that, once
you've created your initial character attributes and stuck them in a dict,
you never use the dict again. Also, I'm assuming the constraint that there
is a manageably small number of character attributes.
That depends on how the rest of the game is set up. Suppose the
character is wandering through a maze. Now in the maze are tests
which require the character to roll under a certain characteristic
with a certain bonus/malus. So such a test object value may be
equivallent to (strength , -2) I think such a setup will be
easier to implement if you keep the characteristics as a dictionary
within a character instance.
Now whether such a scheme would suit the OP is up to him to decide.
If you happen to already have collected your character attributes in a
mapping object for some other reason, then well and good, pass it into the
function. Otherwise, well, I believe the correct container for
character attributes is a Character, not a dict.
What is wrong with keeping the character attributes in a dict in the
Character?
For the same reason we typically say object.attribute rather than
object.__dict__[attribute]
But we also typically use:
object.some_dict[some_characteristic]
rather than
object.__dict__[some_characterictic]
where some_charaterictic contains the name of a characteristic.
Perhaps you missed the original post, where one of the constraints was
that character attributes in the game were also object attributes. E.g.
class Character(object):
def __init__(self, strength):
self.strength = strength
The question posed was, what is the best way of calling __init__ with
values for those character attributes?
Well if that is what he wants.
If the character attributes vary at runtime, or there are many of them, or
if they are needed together (rather than individually) in multiple places
apart from Character.__init__, then it makes sense to bundle them up in a
dict and pass the dict around, like Ben and now you are suggesting.
It is not only that they can vary ay runtime. There is also the
possibility that you don't know in advance which one you will need
because that is decided by the environment. I think that would be
an argument in favor of a dict too.
But if the character attributes are not varying, and there are only a few,
and they only get used collectively for Character.__init__, then I don't
believe there is any advantage to putting them in a dict to be used once
and then tossed away.
I guess it depends on how he will need those characteristics later on.
To give an
Re: Can not download plugins for jEdit (help!!)
May I ask another quetion? I don't want to mess with lots of plugins at this point. What are the minimum plugins to get a typical looking IDE with a code window and output window and that lets me set breakpoints and step through code? The Console plugin is a must (I think it depends on the ErrorList plugin which is also very useful as I noted above). JPyDebug is an interactive debugger - I have never used it mind, I usually rely on print statements to debug stuff. -- http://mail.python.org/mailman/listinfo/python-list
Re: extract text from a string
Thank you very much. I needed this kick. :) Rg, Boris Grant Edwards napísal(a): On 2006-11-09, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Hallo all, I have tried for a couple of hours to solve my problem with re but I have no success. I have a string containing: +abc_cde.fgh_jkl\n and what I need to become is abc_cde.fgh_jkl. Could anybody be so kind and write me a code of how to extract this text from that string? s = +abc_cde.fgh_jkl\n s[1:-1] 'abc_cde.fgh_jkl' -- Grant Edwards grante Yow! ... I think I'm at having an overnight visi.comsensation right now!! -- http://mail.python.org/mailman/listinfo/python-list
Re: Can not download plugins for jEdit (help!!)
On Nov 9, 3:27 pm, John Salerno [EMAIL PROTECTED] wrote: Ant wrote: I do use vim more than Python these daysWhat does that mean? Are you referring to all the setup involved with vim? Whoops! I mean I use vim more than jEdit these days! -- http://mail.python.org/mailman/listinfo/python-list
Re: pack a three byte int
Dave Opstad wrote: Sorry, that should have been: cdb += struct.pack(L, skip)[1:] L and I produce exactly the same 4-byte result. The change from [-3:] to [1:] is a minor cosmetic improvement, but obscures the underlying ... a bit like putting mascara on a pig. I got the impression that the OP was interested in more radical improvement. Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Py3K idea: why not drop the colon?
Paul Boddie wrote: Michael Hobbs wrote: I think the colon could be omitted from every type of compound statement: 'if', 'for', 'def', 'class', whatever. Am I missing anything? The FAQ answer. ;-) http://www.python.org/doc/faq/general/#why-are-colons-required-for-the-if-while-def-class-statements Paul I suppose it would be even better if that hyperlink actually took you to section 1.4.27 rather than 1.4.14 ... regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC/Ltd http://www.holdenweb.com Skype: holdenweb http://holdenweb.blogspot.com Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
Re: How to choose the right GUI toolkit ?
Nick Craig-Wood wrote: John Salerno [EMAIL PROTECTED] wrote: Dan Lenski wrote: So, is there another toolkit I should be looking at? I highly recommend wxPython. I'd second that! There is a book also WxPython in Action Nick and John S., thank you for the tip on wxPython! I'll look into it for my next project. I too would avoid Qt, not because of the GPL but simply because I don't use KDE under Linux and because Qt is not well supported under Cygwin or on native Windows. I too like to learn from actual printed books, so I'll check this one out. O'Reilly should do a book on Python GUI stuff! John H.: thanks for pointing out pythoncard. This looks like it might be an excellent substitute for LabView-like GUIs, which all my coworkers like. I personally refuse to read or write LabView code, on the grounds that its syntax causes severe brain damage and is completely unportable. But that's a flame for another thread, so to speak... Thanks, Dan -- http://mail.python.org/mailman/listinfo/python-list
Re: Py3K idea: why not drop the colon?
Steve Holden wrote: Paul Boddie wrote: http://www.python.org/doc/faq/general/#why-are-colons-required-for-the-if-while-def-class-statements I suppose it would be even better if that hyperlink actually took you to section 1.4.27 rather than 1.4.14 ... I'd suggest a browser upgrade: even the old version of Konqueror I'm using here manages to scroll to the right place. And it isn't a Web site maintenance problem, either, although I did have my suspicions. Paul -- http://mail.python.org/mailman/listinfo/python-list
