Re: python vs java eclipse
Amir Michail wrote: Hi, It seems to me that measuring productivity in a programming language must take into account available tools and libraries. Eclipse for example provides such an amazing IDE for java that it is no longer obvious to me that one would be much more productive in python for medium sized projects. Sure, all that Java static typing can be painful, but Eclipse takes some of that pain away. Moreover, static typing can result in better on-the-fly error detection and refactoring support. Any thoughts on this? Amir FYI: http://showmedo.com/videos/series?name=PyDevEclipseList hg -- http://mail.python.org/mailman/listinfo/python-list
Re: key not found in dictionary
KraftDiner wrote: I have a dictionary and sometime the lookup fails... it seems to raise an exception when this happens. What should I do to fix/catch this problem? desc = self.numericDict[k][2] KeyError: 589824 This is the error that is being produced, because there is no key 589824. If you agree that the key is not there, then just catch the exception (try ... except) Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
many_years_after wrote: Hi,everyone: Have you any ideas? Say whatever you know about this. thanks. Hi, You mean unicode I assume: http://www.rikai.com/library/kanjitables/kanji_codes.unicode.shtml Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: text editor suggestion?
John Salerno wrote: Ok, I know it's been asked a million times, but I have a more specific question so hopefully this won't be just the same old post. I've tried a few different editors, and I really like UltraEdit, but it's Windows-only and I'm working more on Linux nowadays. Here are my criteria: 1. syntax highlighting (highly customizable) 2. auto/smart indenting 3. ability to run script 4. light-weight text editor, not an IDE 5. cross-platform (not really necessary, but nice) That's pretty much all I need. It's nice when you can customize a bunch of other stuff too, but those are the most important. I've tried vim, but I really don't feel like taking the time to learn how to use it, given that I just like to casually program (not to mention that I prefer to use the mouse when navigating a document sometimes). I also just started using Scite, and I really like it, except I find its syntax highlighting to be very inflexible. You aren't able to define your own groups of words -- you have to use what's given, basically. One thing I like about UltraEdit is that you simply define as many groups of keywords as you want and then assign a style to each one. Scite has a very strange and rigid method of highlighting. So hopefully some of you might have some suggestions. My requirements are minimal, but I'm still not happy with the syntax highlighting I'm seeing in a lot of editors out there. Emacs would be my choice. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: How to get the ascii code of Chinese characters?
Philippe Martin wrote: many_years_after wrote: Hi,everyone: Have you any ideas? Say whatever you know about this. thanks. Hi, You mean unicode I assume: http://www.rikai.com/library/kanjitables/kanji_codes.unicode.shtml Regards, Philippe Hi, I have received a personnal email on this: Kanji is indeed a Japanese subset of the Chinese Character set. I just thought it would be relevant as it includes ~47000 characters. If I hurt any feeling, sorry. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: write eof without closing
cage wrote: hello can i write a eof to a file descriptor without closing it? like: fd.write(EOF) or something grts, ruben No but there is an EOF to the file anyway, even if it is open. I recall under MS-DOS, you could create a file of size N without writing to it (some INT21 or 9 ? call to modify the FAT) ... not really possible anymore. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: The Semicolon Wars as a software industry and human condition
It was philosophers that got us out of that Dark Ages mess, and no small number of them lost their lives in doing so. And today, the philosophy majors are the butts of the most jokes, because after the philosophers succeeded in opening our minds, we forgot why we needed them. Look east Xah, we're still in the Dark Ages mess. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to fill a form
Sulsa wrote: On Tue, 15 Aug 2006 03:37:02 - Grant Edwards [EMAIL PROTECTED] wrote: On 2006-08-15, Sulsa [EMAIL PROTECTED] wrote: I want to fill only one smiple form so i would like not to use any non standard libraries. Then just send the HTTP POST request containing the fields and data you want to submit. but i don't know how to post these data if i knew there there would be no topic. You forgot thanks and regards -- http://mail.python.org/mailman/listinfo/python-list
Re: hide python code !
Bayazee wrote: Armin Steinhoff wrote: Bayazee wrote: hi can we hide a python code ? if i want to write a commercial software can i hide my source code from users access ? we can conver it to pyc but this file can decompiled ... so ...!! do you have any idea about this ...? Use Pyrex in order to build C-Modules from the critical parts of your software. --- First Iranian Open Source Community : www.python.ir Interesting ... but you are not a member of this community. Right? --Armin Hi thanx for your answers . i read all of your replys carefully ... i am an open source Programmer ! i love to distribute my sources and use other ideas ! but asking a question is't reason of using it ! i want to find a way to hide python source codes ! can we do it ? how ? but i dont want to use it this is a question that i must be answer to a friend ! Then the answer could be a question: can we hide any source/binary ? Hardware tokens (ex: smart cards) are used just for that purpose. So as long as you distribute a PC with your package and are certain it cannot be tempered with (the correct O/S, administrative rights, encrypted partitions .) ... but I do not think there is such a PC out there. You might want to read this: http://www.commoncriteriaportal.org/ www.commoncriteriaportal.org/public/files/ccintroduction.pdf http://en.wikipedia.org/wiki/Common_Criteria Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Compiling wxPython app for Windows; Single EXE
Vincent Delporte wrote: Hi I browsed the archives, but since some messages date back a bit, I wanted to make sure that - py2exe is still the best tool in town to compile Python scripts to run on a Windows host that doesn't have Python installed, including wxWidgets/wxPython - there's no way to build a single EXE, to make deployment easier (if multiple files, I need to build an installer with eg. NSIS or InnoSetup)? Thank you. Hi, Yes there is a way to make one .exe/.msi for everything ... but it does require purchasing a tool such as VC++. I have python + wxWindows + my stuff + many other libraries in one installer (takes 120 Megs (sigh)) Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Tkinter module not found
Shuaib wrote: Hey, Even though I freshly installed Tcl and Tk, python still seem to have problems accessing Tkinter module. Here is what says when I do import Tkinter == Traceback (most recent call last): File stdin, line 1, in ? ImportError: No module named Tkinter == Any ideas how to fix this problem? (Gentoo distribution) Thanks. That happened once to me when I compiled python without tcl/tk installed (prior to compiling) -- http://mail.python.org/mailman/listinfo/python-list
Re: hide python code !
Bayazee wrote: hi can we hide a python code ? if i want to write a commercial software can i hide my source code from users access ? we can conver it to pyc but this file can decompiled ... so ...!! do you have any idea about this ...? --- First Iranian Open Source Community : www.python.ir Unless you have some very specific (patent-prone) algo in your code, I do not think you really have an issue there: *.pyc is enough to disturb most people. The real danger I see is a company trying to copy your concept as the real IP (assuming the above is true) is in your specifications ... which can be re-designed from looking at your application: I buy one legal copy of your stuff, put a few smart guys on the deal and come up with a competitive application some time later (I've seen companies do that). Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: hide python code !
Bayazee wrote: Hi, ThnaX for Your Answers ... i am an open source programmer ... ! and i never like to write a closed source app or hide my codes ! it just a question that i must answer/solve it! one of site ( www.python.ir ) users asked this question ! but unfortunately i have't any solution to it ! so i ask it here to know your concepts ... so sorry for my inferior question but i realy want to know a way to do it(if it possible) ! and it is't mean that i want to do it ! Best Regard's Is there such a thing as inferior questions ? only fools do not ask questions, you clearly do not qualify ... heads up !!! Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: New to Python-- Help
John Mary Cook wrote: I just installed Python on Windows XP Pro. When I enter 'python' at the prompt in Pythonwin IDE I get the following: Traceback (most recent call last): File interactive input, line 1, in ? Name Error: name 'python' is not defined Can anyone help? Thank you, J. T. Cook Did you install Python, or Pythonwin ? Cannot use #2 without #1. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: why did wxpython MakeActiveXclass stopped working?!?!!?!?
jojoba wrote:
HI
I wrote a little wxpython program with an embedded windows media
player.
It worked great. Recently, I reinstalled windows and then wxpython
(most likely a newer version than i had before). Now when i run the
exact same code, i get this error:
File C:\Documents and
Settings\jojoba.DEMO-019591FB22\Desktop\Projects\SrAsse
ts\sr.py, line 353, in __init__
self.CreateActiveXplayer()
File C:\Documents and
Settings\jojoba.DEMO-019591FB22\Desktop\Projects\SrAsse
ts\sr.py, line 363, in CreateActiveXplayer
self.Player = PlayerActiveXClass(self, -1)
File
C:\Python24\Lib\site-packages\wx-2.6-msw-ansi\wx\lib\activexwrapper.py,
line 108, in axw__init__
(0, 0, sz.width, sz.height), self._wnd, ID)
File C:\Python24\Lib\site-packages\pythonwin\pywin\mfc\activex.py,
line 23,
in CreateControl
self.__dict__[_obj_] = win32ui.CreateControl(clsid, windowTitle,
style, re
ct, parent, id, None, False, lic_string)
win32ui: The window can not be created as it has an invalid handle
Here is a snippet from my code:
from wxPython.lib.activexwrapper import MakeActiveXClass
import win32com
from win32com import client
class wxWMPlayer(wxPanel):
def __init__(self, parent):
wxPanel.__init__(self, parent, -1,
style=wxCLIP_CHILDREN|wxNO_FULL_REPAINT_ON_RESIZE)
self.MixMaster = parent
self.ID3data = {}
self.InitWindowProperties()
self.CreateActiveXplayer()
def InitWindowProperties(self):
self.WindowsMediaPlayerTopSizer = wxBoxSizer(wxVERTICAL)
self.SetSizer(self.WindowsMediaPlayerTopSizer)
self.SetAutoLayout(1)
def CreateActiveXplayer(self):
PlayerModule =
win32com.client.gencache.EnsureModule('{6BF52A50-394A-11D3-B153-00C04F79FAA6}',
0,1,0)
PlayerActiveXClass=
MakeActiveXClass(PlayerModule.WindowsMediaPlayer, eventObj = self)
self.Player = PlayerActiveXClass(self, -1)
self.Player.isPlaying = 0
self.Player.uiMode= 'full'
self.WindowsMediaPlayerTopSizer.Add(self.Player, 1, wxEXPAND)
Any ideas anyone...i have reinstalled wxpython to no availPlease
help anyone
thanks,
jojoba
Did you reinstall pywin32 ?
Philippe
--
http://mail.python.org/mailman/listinfo/python-list
Re: why did wxpython MakeActiveXclass stopped working?!?!!?!?
Philippe Martin wrote:
jojoba wrote:
HI
I wrote a little wxpython program with an embedded windows media
player.
It worked great. Recently, I reinstalled windows and then wxpython
(most likely a newer version than i had before). Now when i run the
exact same code, i get this error:
File C:\Documents and
Settings\jojoba.DEMO-019591FB22\Desktop\Projects\SrAsse
ts\sr.py, line 353, in __init__
self.CreateActiveXplayer()
File C:\Documents and
Settings\jojoba.DEMO-019591FB22\Desktop\Projects\SrAsse
ts\sr.py, line 363, in CreateActiveXplayer
self.Player = PlayerActiveXClass(self, -1)
File
C:\Python24\Lib\site-packages\wx-2.6-msw-ansi\wx\lib\activexwrapper.py,
line 108, in axw__init__
(0, 0, sz.width, sz.height), self._wnd, ID)
File C:\Python24\Lib\site-packages\pythonwin\pywin\mfc\activex.py,
line 23,
in CreateControl
self.__dict__[_obj_] = win32ui.CreateControl(clsid, windowTitle,
style, re
ct, parent, id, None, False, lic_string)
win32ui: The window can not be created as it has an invalid handle
Here is a snippet from my code:
from wxPython.lib.activexwrapper import MakeActiveXClass
import win32com
from win32com import client
class wxWMPlayer(wxPanel):
def __init__(self, parent):
wxPanel.__init__(self, parent, -1,
style=wxCLIP_CHILDREN|wxNO_FULL_REPAINT_ON_RESIZE)
self.MixMaster = parent
self.ID3data = {}
self.InitWindowProperties()
self.CreateActiveXplayer()
def InitWindowProperties(self):
self.WindowsMediaPlayerTopSizer = wxBoxSizer(wxVERTICAL)
self.SetSizer(self.WindowsMediaPlayerTopSizer)
self.SetAutoLayout(1)
def CreateActiveXplayer(self):
PlayerModule =
win32com.client.gencache.EnsureModule('{6BF52A50-394A-11D3-B153-00C04F79FAA6}',
0,1,0)
PlayerActiveXClass=
MakeActiveXClass(PlayerModule.WindowsMediaPlayer, eventObj = self)
self.Player = PlayerActiveXClass(self, -1)
self.Player.isPlaying = 0
self.Player.uiMode= 'full'
self.WindowsMediaPlayerTopSizer.Add(self.Player, 1, wxEXPAND)
Any ideas anyone...i have reinstalled wxpython to no availPlease
help anyone
thanks,
jojoba
Did you reinstall pywin32 ?
Philippe
Well I'm silly: it would not import.
--
http://mail.python.org/mailman/listinfo/python-list
Re: embedding console in wxpython app
Janto Dreijer wrote: I'm writing a Linux filemanager using wxPython. I'd like to embed a bash console inside it. I have found the Logilab pyqonsole (http://www.logilab.org/projects/pyqonsole), but it uses PyQT. Does anyone know how to do this from wx? Is it possible to embed a PyQT widget inside wxPython? Thanks! Janto How about just using bash and rerouting stdin/stdout ? Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: why did wxpython MakeActiveXclass stopped working?!?!!?!?
jojoba wrote:
Hi Phillipe!
Thanks for the response!
Unfortunately, i have also reinstalled pywin32, and i still get the
same error.
Isn't this weird?
You know what else.
I have a py2exe version of this code, that actually runs fine, using
the embedded windows media player. But Im guessing i made that py2exe
distributable with older pywin32 and older wxpython.
This makes me think that one of the newer versions of pywin32 or
wxpython is giving me that error trouble.
Any other ideas on how to rectify this?
Thanks again,
jojoba
Philippe Martin wrote:
Philippe Martin wrote:
jojoba wrote:
HI
I wrote a little wxpython program with an embedded windows media
player.
It worked great. Recently, I reinstalled windows and then wxpython
(most likely a newer version than i had before). Now when i run the
exact same code, i get this error:
File C:\Documents and
Settings\jojoba.DEMO-019591FB22\Desktop\Projects\SrAsse
ts\sr.py, line 353, in __init__
self.CreateActiveXplayer()
File C:\Documents and
Settings\jojoba.DEMO-019591FB22\Desktop\Projects\SrAsse
ts\sr.py, line 363, in CreateActiveXplayer
self.Player = PlayerActiveXClass(self, -1)
File
C
\Python24\Lib\site-packages\wx-2.6-msw-ansi\wx\lib\activexwrapper.py,
line 108, in axw__init__
(0, 0, sz.width, sz.height), self._wnd, ID)
File C:\Python24\Lib\site-packages\pythonwin\pywin\mfc\activex.py,
line 23,
in CreateControl
self.__dict__[_obj_] = win32ui.CreateControl(clsid, windowTitle,
style, re
ct, parent, id, None, False, lic_string)
win32ui: The window can not be created as it has an invalid handle
Here is a snippet from my code:
from wxPython.lib.activexwrapper import MakeActiveXClass
import win32com
from win32com import client
class wxWMPlayer(wxPanel):
def __init__(self, parent):
wxPanel.__init__(self, parent, -1,
style=wxCLIP_CHILDREN|wxNO_FULL_REPAINT_ON_RESIZE)
self.MixMaster = parent
self.ID3data = {}
self.InitWindowProperties()
self.CreateActiveXplayer()
def InitWindowProperties(self):
self.WindowsMediaPlayerTopSizer = wxBoxSizer(wxVERTICAL)
self.SetSizer(self.WindowsMediaPlayerTopSizer)
self.SetAutoLayout(1)
def CreateActiveXplayer(self):
PlayerModule =
win32com.client.gencache.EnsureModule('{6BF52A50-394A-11D3-B153-00C04F79FAA6}',
0,1,0)
PlayerActiveXClass=
MakeActiveXClass(PlayerModule.WindowsMediaPlayer, eventObj = self)
self.Player = PlayerActiveXClass(self, -1)
self.Player.isPlaying = 0
self.Player.uiMode= 'full'
self.WindowsMediaPlayerTopSizer.Add(self.Player, 1, wxEXPAND)
Any ideas anyone...i have reinstalled wxpython to no availPlease
help anyone
thanks,
jojoba
Did you reinstall pywin32 ?
Philippe
Well I'm silly: it would not import.
Hi,
I'd post this to [EMAIL PROTECTED]
Philippe
--
http://mail.python.org/mailman/listinfo/python-list
Re: [Linux] What toolkit for a good grid/spreadsheet widget?
jean-michel bain-cornu wrote: Hi, Thx for the two pointers. Are those widgets more than just tables, ie. can I edit the contents, including displaying a combo box, can items be grouped or hierarchized, or are they just basic, read-only tables to display results? I need this kind of widget to build a 2+ column interface to let users type entries into the application as an alternative to MS Access-style complicated entry masks. Wx have got an excellent one. I was succesful to use it with editable cells and to include a choice in a cell. However, it was pretty hard to reach that, ie to extract a working sample from the demo. Once done that, no more problems with it. What I suggest you is to have a look on the demo, in the chapter Core Windows/Controls - Grid - wx.Grid showing Editors and Renderers. Rgds, jm Yes, I can also select which cell can be edited on the cell level. -- http://mail.python.org/mailman/listinfo/python-list
Re: [Linux] What toolkit for a good grid/spreadsheet widget?
Vincent Delporte wrote: Hello I'd like to use Python under Linux to write a business application, and I'll need a good grid/spreadsheet editable widget, maybe not on par with eg. ComponentOne's excellent VSFlexGrid (http://www.componentone.com/newimages/flexgrid_02_lg.gif), but somewhat professional-grade. Any recommendation? GTK doesn't seem to have one that is good enough (GTKSheet http://gtkextra.sourceforge.net/ looks like a basic table), so I was wondering about QT/PyQt and wxWidgets/wxPython. Any recommendation? Thank you VD. http://www.wxpython.org/ Search for Grid here: http://www.wxpython.org/onlinedocs.php Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Paul Rubin wrote: Philippe Martin [EMAIL PROTECTED] writes: Why are you avoiding naming the chip and its compiler? I must disagree on that one: There are many threads on this site where people just have fun talking algorithm. I'm not an algo. expert and I know there are many here. This is just like the very common situation here and on sci.crypt, where a person has a programming or algorithm question and gets asked what the application is, and when they answer, it turns out that what they need is not anything like what they thought they needed. on one device, the processor in an 8-bit arm and the X-compiler is made by epson on the other device, the processor is unknown to me and the environment is a subset of java made for smartcards called javacard. You mean ARM?? There is no such thing as an 8-bit ARM; they are 32-bit cpu's that (in some models) support a 16-bit instruction format. Javacard is an interpreter that runs in many 8-bit processors. The interpreter supports 32-bit arithmetic. I checked the processor and it is an EPSON 8 bit (SC88 I think). If you check the javacard specs, you'll see that not all VM support 32 bits. Regards, Philipped -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: 3. How does the device manage to compute the 8-decimal-digit number that is your input?? What device manager ? think about it before being rude No device manager [noun] was mentioned. You may have inferred rudeness where astonishment was being implied. I'll try again: How does the [8-bit] device manage [verb, as in how is it able] to compute the [32-bit] 8-decimal-digit number that is [split up one decimal digit per array element thus becoming] your input?? I get keystrokes from the device keyboard and append to the array as needed. I actually need numbers much larger than 32 bits. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: Yes I had arm in mind (for some reason) while it is the Smc8831 (http://www.google.com/url?sa=Ustart=1q=http://www.epsondevice.com/www/PDFS/epdoc_ic.nsf/5388db40b5eee4f949256a9c001d589f/944b73008b0bad33492570a00015d6ba/%24FILE/S5U1C88000C_2Ev3.pdfe=9797) That appears to be volume 2 of the 2-volume set of manuals that come with the tools package. It says that vol 1 has details about the C compiler. This appears to be volume 1: http://www.epsondevice.com/www/PDFS/epdoc_ic.nsf/5388db40b5eee4f949256a9c001d589f/1410881ddee374f7492570a00015d65e/$FILE/C88000C_1Ev3.pdf Section 1.2.3 Data Types mentions unsigned and signed long (32-bit) data types. There are several references to long later, including declarations in sample C code, and details of how long (32-bit) function args are passed. There appears to be a fundamental disconnection here somewhere ... Just trust me John, I do not have access to 32 bit ints/longs. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Paul Rubin wrote:
Philippe Martin [EMAIL PROTECTED] writes:
I actually need numbers much larger than 32 bits.
What is the max size hex number you need? What is the application if
you don't mind my asking?
Well I am under NDA so I cannot tell you what the application is - I need
numbers (dec) with up to 24 digits.
As I said, I went the other way - more data on the line (from dev 1 to dev
2) - but I feel there is no speed issue at this stage.
Seems to work.
Regards,
Philippe
PYTHON **
l2 = [1,2,3,4]
l1 = [0,2,5,9]
def sup (l1, l2): #assume same length
for i in range(len(l1) ):
if l1[i] l2[i]:
return 1
if l1[i] l2[i]:
return -1
return 0
def add (l1, l2): #assume same length
r = []
idx = range (len(l1))
idx.reverse()
carry = 0
for i in idx:
if l1[i] + l2[i] 10:
carry = 1
r.insert(0,(l1[i] + l2[i]) % 10)
else:
r.insert(0,l1[i] + l2[i] + carry)
carry = 0
return r
def sub (l1,l2): #assume same length - sub l1 from l2
r = []
idx = range (len(l1))
idx.reverse()
carry = 0
for i in idx:
print l1[i] + carry, l2[i]
if ((l2[i]) - (l1[i]+carry) 0) :
print 'CARRY'
r.insert(0,(((10 + l2[i]) - (l1[i]+carry
carry = 1
else:
r.insert(0,(l2[i]) - (l1[i]+ carry))
carry = 0
return r
print sub (l1,l2)
* AND AM JUST TESTING IT IN JAVACARD **
//
public byte CmpD(byte[] p_op1, byte[] p_op2, byte p_len) {
byte l_count = (byte)0;
for (; l_count p_len; l_count += 1) {
short C = (short)(p_op1[l_count]);
short D = (short)(p_op2[l_count]);
if (C D) return 1;
if (C D) return -1;
}
return 0;
}
//
public static void SubD(byte[] p_op1, byte[] p_op2, byte[] p_dest, byte
p_len) {
byte l_count = (byte)0;
byte l_carry = (byte)0;
for (l_count = (byte)(p_len - (byte)1); l_count = (byte)0; l_count
-= (byte)1) {
if ((p_op2[l_count] - (byte)(p_op1[l_count]+l_carry) ) 0) {
p_dest[l_count] = (byte)( ((byte)10 + p_op2[l_count]) -
(byte)(p_op1[l_count] + l_carry)) ;
l_carry = (byte)1;
}
else {
p_dest[l_count] = (byte)( p_op2[l_count] - (byte)(p_op
[l_count] + l_carry)) ;
l_carry = -(byte)0;
}
}
}
//
public static void AddD(byte[] p_op1, byte[] p_op2, byte[] p_dest, byte
p_len) {
byte l_count = (byte)0;
byte l_carry = (byte)0;
for (l_count = (byte)(p_len - (byte)1); l_count = (byte)0; l_count
-= (byte)1) {
if (p_op2[l_count] + (byte)(p_op1[l_count]) 10) {
p_dest[l_count] = (byte)( ( p_op2[l_count] + p_op
[l_count] )% 10) ;
l_carry = (byte)1;
}
else {
p_dest[l_count] = (byte)( p_op2[l_count] + p_op1[l_count] +
l_carry) ;
l_carry = -(byte)0;
}
}
}
--
http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Paul Rubin wrote: Philippe Martin [EMAIL PROTECTED] writes: Well I am under NDA so I cannot tell you what the application is - I need numbers (dec) with up to 24 digits. You actually need to represent numbers up to 10**24?? As I said, I went the other way - more data on the line (from dev 1 to dev 2) - but I feel there is no speed issue at this stage. What are your memory constraints? On device #1 no constraint for my purpose. On the smartcard, the tradeoff is between using EEPROM (plenty + slow + small life expectancy) for temp variables versus RAM (very little) ... but I do not think it is an issue eather in my case. Speed is what worries me most (crypto takes time). But so far so good. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Paul Rubin wrote: Philippe Martin [EMAIL PROTECTED] writes: Well I am under NDA so I cannot tell you what the application is - I need numbers (dec) with up to 24 digits. You actually need to represent numbers up to 10**24?? As I said, I went the other way - more data on the line (from dev 1 to dev 2) - but I feel there is no speed issue at this stage. What are your memory constraints? PS: in smart cards, you count RAM in hundreds of bytes and EEPROM in K-bytes. -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Paul Rubin wrote: Philippe Martin [EMAIL PROTECTED] writes: On device #1 no constraint for my purpose. On the smartcard, the tradeoff is between using EEPROM (plenty + slow + small life expectancy) for temp variables versus RAM (very little) ... but I do not think it is an issue eather in my case. Speed is what worries me most (crypto takes time). You should not have to do this decimal-hex conversion repeatedly in a crypto operation. Do you have a public-key accelerator (or MAC unit) on that cpu? Do you really care about speed? I had thought up a cute O(n**3) scheme that might have been ok for 8 digits but probably not for 24. I did not explain myself correctly, the decimal operations are done in clear mode as they are made within the cards which by definition cannot be broken, requests and results that go to/from the devices are encrypted/signed with diversified keys ... but that another story ;-) Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
[EMAIL PROTECTED] wrote: Philippe Martin wrote: Yes, I came here for the algorithm question, not the code result. To turn BCD x to binary integer y, set y to zero for each nibble n of x: y = (((y shifted left 2) + y) shifted left 1) + n Do you need instruction on extracting nibbles, and shifting and adding integers? A problem this small and simple does not call for a prototype. -- --Bryan 'cause you're smart -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: So why don't you get a freely available bignum package, throw away the bits you don' t want, and just compile it and use it, instead of writing your own bug-ridden (see below) routines? Oh yeah, the bignum package might use long and you think that you don't have access to 32-bit longs in the C compiler for the 8-bit device that you mistook for an arm but then said is an Smc8831 [Google can't find it] with a CPU that you think is a SC88 [but the manual whose URL you gave is for an S1C88] ... Thanks for the fixes - still looking at it. You are correct, all bignum packages I found needed 32 bits. Yes I still see from my documentation that there is no long handled by my compiler. I did make a mistake on the CPU (and I really do not care what it is) - you wanted some ref (I still do not see why) and I googled S1C88 and sent you a link as that is the name of the compiler's directory. The reason I first came here was to not have to write my ... own bug-ridden ... (how nice) ... I have plenty of other bugs to write first. *** WHAT HAPPENS IF arg1 arg2? cmp is called first. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Sorry forgot a few answers/comments: John Machin wrote: SHOULD BE = currently add([6, 6], [4, 4] - [10, 10] True, thanks *** try - 10 instead of % 10 If the first operand is 19, you have a bug! This might save a few CPU cycles on your smartcard can it ? each array value will be [0..9] SHOULD CHECK FOR CARRY AT END currently add([9], [8]) - [7] should return [1, 7] or handle overflow somehow True, this actually should become an error from the card to the calling device. That would be a pretty large number though. MINUS ZERO? I just do not want to leave it at one(1) if it is. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Have you actually tried it? Do you mean it barfs on the word long [meaning that it's not an ANSI-compliant C compiler], or that long is only 16 bits? :-) if the documentation tells me there is no 32 bit support, why should I not believe it ? because (1) [like I said before] gcc appears to be able to generate code for a vast number of different CPUs (2) because I find it very difficult to believe that a C compiler for the CPU on a device in current use won't support 32-bit longs -- and so far you have presented no credible evidence to the contrary I can recall working on a sparclite many years ago (32 bits) with a x-compiler called g++ (supported by cygnus) that handled the type long long = 64 bits. As far as the credible evidence ... you're hurting my feelings ;-) and I googled S1C88 and sent you a link as that is the name of the compiler's directory. and is that or is it not the correct link for the documentation for the compiler that you are using?? Neither can I ! - never found any documentation online ... got it from my device supplier. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Simon Forman wrote: Philippe, please! The suspense is killing me. What's the cpu!? For the love of God, what's the CPU? I-can't-take-it-anymore-it's-such-a-simple-question-ingly yours, Yes, please . I've found a C compiler manual on the web for the Epson S1C33 CPU as well as the one for the S1C88 that Philippe pointed me at. They have two things in common: (1) explicitly mention support for 32-bit longs (2) in the bottom right corner of most pages, it has the part number (which includes S1Cxx) and the version number. Philippe has what he believes to be the manual for the C compiler for the CPU in the device, but couldn't find it on the web. Perhaps if Philippe could divulge the part number that's in the bottom right corner of the manual that he has, and/or any part number that might be mentioned in the first few pages of that manual, enlightenment may ensue Cheers, John That was cute ... over and out ! Long live Python. A+ Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: how to make python socket server work with the app.MainLoop() in wxpython?
zxo102 wrote:
Hi everyone,
I am using a python socket server to collect data from a socket
client and then control a image location ( wxpython) with the data,
i.e. moving the image around in the wxpython frame.
But the app.MainLoop() in wxpython looks like conflicting with
the while 1: in socket server. After I commented the
app.MainLoop(), everything is working except two things:
1. if I click anywhere on the screen with the mouse, the image is
gong and only the empty frame( or panel) is left.
2. if I don't touch anything, the image is being moved around but
the previous images are left behind in the panel.
I guess that may be caused by app.MainLoop() commented.
Anybody knows how to make the two things work together? I really
appreciate your help.
My sample code is modified based on the wxpython demo: image.py.
socket client is also attached for your reference.
Ouyang
socket server with wxpython ##
from Main import opj
import wx,string
class MMCS(wx.Frame):
def __init__(self):
self.bmp = wx.Image(opj('bitmaps/image.bmp'),
wx.BITMAP_TYPE_BMP)
self.bmp.SetMask(True)
wx.Frame.__init__(self, parent=None, title='monitoring system',
size=(500,600))
self.panel = wx.Panel(self,-1)
def monitor(self,x,y,angle):
bmp = self.bmp.Rotate(angle, (x,y), True,None)
bmp = bmp.ConvertToBitmap()
wx.StaticBitmap(self.panel, -1, bmp, (x, y), (bmp.GetWidth(),
bmp.GetHeight()))
del bmp
app = wx.PySimpleApp()
frame = MMCS()
frame.Show()
frame.monitor(50,10,0.0)
#app.MainLoop()
# Server program
from socket import *
# Set the socket parameters
host = 192.168.0.2
port = 21567
buf = 1024
addr = (host,port)
# Create socket and bind to address
UDPSock = socket(AF_INET,SOCK_DGRAM)
UDPSock.bind(addr)
# Receive messages
while 1:
data,addr = UDPSock.recvfrom(buf)
if not data:
print Client has exited!
break
else:
print \nReceived message ', data,'
d = string.split(data, '-')
frame.monitor(string.atoi(d[0]),string.atoi(d[1]),string.atof(d[2]))
if data == 'END':
print end of moving the ship
# Close socket
UDPSock.close()
# socket client ##
rom socket import *
import time
# Set the socket parameters
host = 192.168.0.2
port = 21567
buf = 1024
addr = (host,port)
# Create socket
UDPSock = socket(AF_INET,SOCK_DGRAM)
def_msg = ===Enter message to send to server===;
print \n,def_msg
# Send messages
while (1):
for i in range(100):
time.sleep(1)
data = 50-100-%s%(0.1*i)
if(UDPSock.sendto(data,addr)):
print Sending message ',data,'.
# Close socket
UDPSock.close()
If you get rid of app.MaiLoop(), you basically get rid of all GUI events.
You need to have you server in a separate thread.
Philippe
--
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Re: how to make python socket server work with the app.MainLoop() in wxpython?
Philippe Martin wrote:
zxo102 wrote:
Hi everyone,
I am using a python socket server to collect data from a socket
client and then control a image location ( wxpython) with the data,
i.e. moving the image around in the wxpython frame.
But the app.MainLoop() in wxpython looks like conflicting with
the while 1: in socket server. After I commented the
app.MainLoop(), everything is working except two things:
1. if I click anywhere on the screen with the mouse, the image is
gong and only the empty frame( or panel) is left.
2. if I don't touch anything, the image is being moved around but
the previous images are left behind in the panel.
I guess that may be caused by app.MainLoop() commented.
Anybody knows how to make the two things work together? I really
appreciate your help.
My sample code is modified based on the wxpython demo: image.py.
socket client is also attached for your reference.
Ouyang
socket server with wxpython ##
from Main import opj
import wx,string
class MMCS(wx.Frame):
def __init__(self):
self.bmp = wx.Image(opj('bitmaps/image.bmp'),
wx.BITMAP_TYPE_BMP)
self.bmp.SetMask(True)
wx.Frame.__init__(self, parent=None, title='monitoring system',
size=(500,600))
self.panel = wx.Panel(self,-1)
def monitor(self,x,y,angle):
bmp = self.bmp.Rotate(angle, (x,y), True,None)
bmp = bmp.ConvertToBitmap()
wx.StaticBitmap(self.panel, -1, bmp, (x, y), (bmp.GetWidth(),
bmp.GetHeight()))
del bmp
app = wx.PySimpleApp()
frame = MMCS()
frame.Show()
frame.monitor(50,10,0.0)
#app.MainLoop()
# Server program
from socket import *
# Set the socket parameters
host = 192.168.0.2
port = 21567
buf = 1024
addr = (host,port)
# Create socket and bind to address
UDPSock = socket(AF_INET,SOCK_DGRAM)
UDPSock.bind(addr)
# Receive messages
while 1:
data,addr = UDPSock.recvfrom(buf)
if not data:
print Client has exited!
break
else:
print \nReceived message ', data,'
d = string.split(data, '-')
frame.monitor(string.atoi(d[0]),string.atoi(d[1]),string.atof(d[2]))
if data == 'END':
print end of moving the ship
# Close socket
UDPSock.close()
# socket client ##
rom socket import *
import time
# Set the socket parameters
host = 192.168.0.2
port = 21567
buf = 1024
addr = (host,port)
# Create socket
UDPSock = socket(AF_INET,SOCK_DGRAM)
def_msg = ===Enter message to send to server===;
print \n,def_msg
# Send messages
while (1):
for i in range(100):
time.sleep(1)
data = 50-100-%s%(0.1*i)
if(UDPSock.sendto(data,addr)):
print Sending message ',data,'.
# Close socket
UDPSock.close()
If you get rid of app.MaiLoop(), you basically get rid of all GUI events.
You need to have you server in a separate thread.
Philippe
PS:
http://wiki.wxpython.org/index.cgi/LongRunningTasks
--
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BCD List to HEX List
Hi, I'm looking for an algo that would convert a list such as: I'm using python to prototype the algo: this will move to C in an embedded system where an int has 16 bits - I do not wish to use any python library. l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678 l2 = func (l1) # l2 = [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: how to make python socket server work with the app.MainLoop() in wxpython?
Grant Edwards wrote: On 2006-07-30, Philippe Martin [EMAIL PROTECTED] wrote: If you get rid of app.MaiLoop(), you basically get rid of all GUI events. You need to have you server in a separate thread. Isn't there any way to use wxWidgets socket callbacks in wxPython? -- Grant Edwards grante Yow! I'm wearing PAMPERS!! at visi.com If I understand correctly, I guess you can send an event to the main thread to tell it there was data received. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Marc 'BlackJack' Rintsch wrote:
In [EMAIL PROTECTED], Philippe Martin wrote:
I'm looking for an algo that would convert a list such as:
I'm using python to prototype the algo: this will move to C in an
embedded system where an int has 16 bits - I do not wish to use any
python library.
l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678
l2 = func (l1)
# l2 = [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687
def func(x):
result = list(x)
result[2:4] = [0xd]
result[-1], result[-2] = result[-2], result[-1]
return result
l1 = [1, 2, 3, 4, 6, 7, 8]
l2 = func(l1)
print l2
And now please describe you problem a little better. ;-)
Ciao,
Marc 'BlackJack' Rintsch
I'll try.
first of all python is not going to be used for my purpose (sigh)
I have device A which holds a binary coded decimal array [N1,N2,Nn]
where the array represents a decimal number.
In C: unsigned char dec[] = {1,2,3,4,5,6,7,8};
I need that array converted for device B into an array where each element
represents the actual byte value.
In C: the result would be unsigned char hex[] = {0x1,0x2,0xD,0x6,0x8,0x7};
I guess any pocket calculator goes through that process for dec/hex
conversion.
Hope that's clearer.
Regards,
Philippe
--
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Re: BCD List to HEX List
Marc 'BlackJack' Rintsch wrote:
In [EMAIL PROTECTED], Philippe Martin wrote:
Marc 'BlackJack' Rintsch wrote:
And now please describe you problem a little better. ;-)
I'll try.
first of all python is not going to be used for my purpose (sigh)
I have device A which holds a binary coded decimal array [N1,N2,Nn]
where the array represents a decimal number.
In C: unsigned char dec[] = {1,2,3,4,5,6,7,8};
I need that array converted for device B into an array where each element
represents the actual byte value.
In C: the result would be unsigned char hex[] =
{0x1,0x2,0xD,0x6,0x8,0x7};
I guess any pocket calculator goes through that process for dec/hex
conversion.
Hope that's clearer.
Not really. Maybe I'm missing something obvious but I don't see the link
between your `dec` and `hex` values. 12345678 converted to hex is
bc614e. Do you need such a conversion? And should the result really be
one nibble (4 bit)/hex digit per array entry!?
Ciao,
Marc 'BlackJack' Rintsch
My apologies, I clearly made a mistake with my calculator, yes the resulting
array I would need is [0xb,0xc,0x6,0x1,0x4,0xe]
Regards,
Philippe
--
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Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: Hi, I'm looking for an algo that would convert a list such as: Such as what? I'm using python to prototype the algo: this will move to C in an embedded system where an int has 16 bits - I do not wish to use any python library. l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678 Does it??? How do you represent the decimal number 12349678, then? l2 = func (l1) # l2 = [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 I'm sorry, but very little of that makes any sense to me: 1. I thought BCD meant something very much like this: http://en.wikipedia.org/wiki/Binary-coded_decimal 2. [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 [1, 2, 13, 6, 8, 7] So [1], [2], [6] are unchanged, [3, 4] - [13] (or maybe [3, 4, 5] - 13), and [7, 8] - [8,7]. I doubt very much that there's an algorithm to do that. What is the relationship between 1234(maybe 5)678 and 0x12D687??? I would expect something like this:: 0x12345678 (stored in 4 bytes 0x12, ..., 0x78) -- or 0x21436587 or 0x012345678s (where s is a sign nibble; stored in 5 bytes 0x01, ..., 0x8s) IOW something regular and explicable ... 3. Perhaps it might be a good idea if you told us what the *real* problem is, including *exact* quotes from the manual for the embedded system. You evidently need/want to convert from one representation of signed? unsigned? integers to another. Once we all understand *what* those representations are, *then* we can undoubtedly help you with pseudocode in the form of Python code manipulating lists or whatever. Cheers, John Hi, From my answer to Marc: My apologies, I clearly made a mistake with my calculator, yes the resulting array I would need is [0xb,0xc,0x6,0x1,0x4,0xe] Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Paul Rubin wrote:
Philippe Martin [EMAIL PROTECTED] writes:
I'm using python to prototype the algo: this will move to C in an
embedded system where an int has 16 bits - I do not wish to use any
python library.
l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678
This is untested, but should give you the idea:
First, convert that list to a decimal digit string:
s = ''.join(map(str, l1))
Then convert the string to an integer:
n = int(s)# base 10 is the default
Then convert the integer to a hex digit string:
h = '%X' % n
Finally, convert the hex digit string to a list of integer values of the
individual digits:
vlist = [int(d, 16) for d in h]
This is the list you want.
If you prefer, You can do it all in one line:
vlist = [int(d, 16) for d in ('%X' % int(''.join(map(str, l1]
Thanks Paul,
I'm just using Python to prototype, so I cannot use any of these great
features of the language.
Regards,
Philippe
--
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Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: John Machin wrote: Philippe Martin wrote: Hi, I'm looking for an algo that would convert a list such as: Such as what? I'm using python to prototype the algo: this will move to C in an embedded system where an int has 16 bits - I do not wish to use any python library. l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678 Does it??? How do you represent the decimal number 12349678, then? l2 = func (l1) # l2 = [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 I'm sorry, but very little of that makes any sense to me: 1. I thought BCD meant something very much like this: http://en.wikipedia.org/wiki/Binary-coded_decimal 2. [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 [1, 2, 13, 6, 8, 7] So [1], [2], [6] are unchanged, [3, 4] - [13] (or maybe [3, 4, 5] - 13), and [7, 8] - [8,7]. I doubt very much that there's an algorithm to do that. What is the relationship between 1234(maybe 5)678 and 0x12D687??? I would expect something like this:: 0x12345678 (stored in 4 bytes 0x12, ..., 0x78) -- or 0x21436587 or 0x012345678s (where s is a sign nibble; stored in 5 bytes 0x01, ..., 0x8s) IOW something regular and explicable ... 3. Perhaps it might be a good idea if you told us what the *real* problem is, including *exact* quotes from the manual for the embedded system. You evidently need/want to convert from one representation of signed? unsigned? integers to another. Once we all understand *what* those representations are, *then* we can undoubtedly help you with pseudocode in the form of Python code manipulating lists or whatever. Cheers, John Hi, From my answer to Marc: My apologies, I clearly made a mistake with my calculator, yes the resulting array I would need is [0xb,0xc,0x6,0x1,0x4,0xe] Clearly? I don't think that word means what you think it means :-) All you need is something like the following. You will need to use long if the C int is only 16 bits. C:\junktype bcd.py def reconstitute_int(alist): reg = 0 # reg needs to be 32-bits (or more) for digit in alist: assert 0 = digit = 9 reg = reg * 10 + digit return reg def make_hex(anint): # anint needs to be 32-bits (or more) result = [] while anint: result.append(anint 0xF) anint = 4 return result def reverse_list(alist): n = len(alist) for i in xrange(n 1): reg1 = alist[n - 1 - i] reg2 = alist[i] alist[i] = reg1 alist[n - 1 - i] = reg2 C:\junk C:\junkpython Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. import bcd num = bcd.reconstitute_int([1,2,3,4,5,6,7,8]) num 12345678 result = bcd.make_hex(num) result [14, 4, 1, 6, 12, 11] bcd.reverse_list(result) result [11, 12, 6, 1, 4, 14] ['0x%x' % digit for digit in result] ['0xb', '0xc', '0x6', '0x1', '0x4', '0xe'] ^Z HTH, John Thanks John, I do not have a long available on the device: stuck with 16 bits. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Dennis Lee Bieber wrote: On Sun, 30 Jul 2006 16:39:47 -0500, Philippe Martin [EMAIL PROTECTED] declaimed the following in comp.lang.python: My apologies, I clearly made a mistake with my calculator, yes the resulting array I would need is [0xb,0xc,0x6,0x1,0x4,0xe] Take note that this is NOT a BCD form for 12345678. BCD (typically packed) uses four bits per decimal digit. That would make 12345678 = 0x12, 0x34, 0x56, 0x78 (ignoring matters of big/little end). The binary representation of 12345678, in bytes, is 0xBC, 0x61, 0x4E 0xb, 0xc... is really 0x0B, 0x0C... 8-bits per byte, with MSB set to . Compare: BCD 00010010 00110100 01010110 0000 binary1000 0111 01001110 your 1011 1100 0110 0001 0100 1110 -- Wulfraed Dennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ Yes I realized that after writing it. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Paul Rubin wrote: Philippe Martin [EMAIL PROTECTED] writes: I'm just using Python to prototype, so I cannot use any of these great features of the language. I think when writing a prototype, you should use whatever features you want, except maybe at the upper levels of program organization. The idea of prototyping is to get something done quickly, that you can use for integration and user testing earlier in the development cycle. So you should use whatever Python features are available to make prototyping faster. You shouldn't expect the prototype code to closely match the final C code, if that slows you down. If you want code that closely resembles C code, you might as well write in C directly. Some truth in that. Thanks, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: Thanks John, I do not have a long available on the device: stuck with 16 bits. What does available on the device mean? Having a long is a property of a C complier, not a device. What is the CPU in the device? What is the C compiler you are using? N.B. Last time I looked, gcc would generate code for just about any CPU since Babbage's. I would expect *any* C compiler that is targetting a 16-bit CPU to provide a 32-bit long and generate reasonably efficient code for most simple operations. Is there no library of utility routines for *elementary* base conversions such as you need? Is there no 32-bit-arithmetic-simulation package? Hi John, I'm working on an embedded 8 bit device and have no choice as to which cross-compiler to use: in this case the guy knows up to short and that's it. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Philippe Martin wrote: Hi, I'm looking for an algo that would convert a list such as: I'm using python to prototype the algo: this will move to C in an embedded system where an int has 16 bits - I do not wish to use any python library. l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678 l2 = func (l1) # l2 = [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 Regards, Philippe Thanks to all, I decided to attack the problem another way and change the code in device #2 so it can now take the output from device #1. As device #2 only needs to compare, add, and subtract the stuff .. it makes my life much simpler. Sample (potentially buggy): l1 = [1,2,3,4] l2 = [0,2,3,9] def sup (l1, l2): #assume same length for i in range(len(l1) ): if l1[i] l2[i]: return 1 if l1[i] l2[i]: return -1 return 0 def add (l1, l2): #assume same length r = [] idx = range (len(l1)) idx.reverse() carry = 0 for i in idx: if l1[i] + l2[i] 10: carry = 1 r.insert(0,(l1[i] + l2[i]) % 10) else: r.insert(0,l1[i] + l2[i] + carry) carry = 0 return r print sup(l1,l2) print add (l1,l2) -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Have you considered asking on a newsgroup where your problem might actually be on-topic, like: comp.lang.c Yes, I came here for the algorithm question, not the code result. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: Philippe Martin wrote: Hi, I'm looking for an algo that would convert a list such as: I'm using python to prototype the algo: this will move to C in an embedded system where an int has 16 bits - I do not wish to use any python library. l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678 l2 = func (l1) # l2 = [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 Regards, Philippe Thanks to all, I decided to attack the problem another way and change the code in device #2 so it can now take the output from device #1. As device #2 only needs to compare, add, and subtract the stuff .. it makes my life much simpler. I'm confused. 1. Was the original device #1 or #2? 2. How many bits does the non-original device's C compiler support? 3. If the original device is device #1, please explain where *it* obtained an 8-digit decimal number expressed as 1 digit per byte (or int) ... Well I don't want to bore you guys more than needed ;-) but: Device #1 has an 8 bit processor - uses a C cross-compiler that does not know anything above a 16 bit integer. I use this device to get information from users 1234 Device #2 has an 8 bit processor - uses a subset of Java ... that does not know anything above a 16 bit integer. The information gathered in device number #1 must then be sent to device #2 (after being encrypted ) to be compared, subtracted or added. The code I already have in device #2 makes the assumption that the information received is an array of bytes of length N which represents an actual value. ex: 0x67DF5 == [0x6, 0x7, 0xD, 0xF, 0x5] ... so it can compare/add/subtract values ... and do its job. As a python fan, I figured (back to my initial not very clear request), that I could prototype the above without making any major assumption as to the capabilities of the interpreter. I still believe that to be true. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: John Machin wrote: Have you considered asking on a newsgroup where your problem might actually be on-topic, like: comp.lang.c Yes, I came here for the algorithm question, not the code result. This is comp.lang.python, not comp.algorithms Why are you avoiding naming the chip and its compiler? I must disagree on that one: There are many threads on this site where people just have fun talking algorithm. I'm not an algo. expert and I know there are many here. Why are you avoiding naming the chip and its compiler? I am not but I do not see what that brings to the discussion: but if you wish == on one device, the processor in an 8-bit arm and the X-compiler is made by epson on the other device, the processor is unknown to me and the environment is a subset of java made for smartcards called javacard. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Dennis Lee Bieber wrote:
On Sun, 30 Jul 2006 17:07:57 -0500, Philippe Martin
[EMAIL PROTECTED] declaimed the following in comp.lang.python:
Paul Rubin wrote:
If you prefer, You can do it all in one line:
vlist = [int(d, 16) for d in ('%X' % int(''.join(map(str, l1]
Thanks Paul,
I'm just using Python to prototype, so I cannot use any of these great
features of the language.
You asked for algorithm... The above can be translated to C fairly
easily without changing the algorithm... The array handling requires
some thought, but...
Or did you want a literal recipe
for each integer in list I1:
convert to string representation
join the resultant strings into one string
convert result to binary integer
print the integer to string using Hex format code
for each hex-digit in the string representation:
convert to binary representation
But then, that description was given to you... G
That /is/ the algorithm... Implementation is a detail for the
student G
--
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Thank you very much
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Re: BCD List to HEX List
Grant Edwards wrote: On 2006-07-31, John Machin [EMAIL PROTECTED] wrote: but if you wish == on one device, the processor in an 8-bit arm and the X-compiler is made by epson 1. You still haven't *NAMED* the CPU and the compiler!! He obviously doesn't want to have to kill all of us. 2. Do you mean ARM as in Acorn/Advanced RISC Machines?? That's the only arm processor I know about. They make 8-bit CPUs Nope. 3. How does the device manage to compute the 8-decimal-digit number that is your input?? -- Grant Edwards grante Yow! Yow! Maybe I should at have asked for my Neutron visi.comBomb in PAISLEY-- Yes I had arm in mind (for some reason) while it is the Smc8831 (http://www.google.com/url?sa=Ustart=1q=http://www.epsondevice.com/www/PDFS/epdoc_ic.nsf/5388db40b5eee4f949256a9c001d589f/944b73008b0bad33492570a00015d6ba/%24FILE/S5U1C88000C_2Ev3.pdfe=9797) 3. How does the device manage to compute the 8-decimal-digit number that is your input?? What device manager ? think about it before being rude Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
Philippe Martin wrote: Grant Edwards wrote: On 2006-07-31, John Machin [EMAIL PROTECTED] wrote: but if you wish == on one device, the processor in an 8-bit arm and the X-compiler is made by epson 1. You still haven't *NAMED* the CPU and the compiler!! He obviously doesn't want to have to kill all of us. 2. Do you mean ARM as in Acorn/Advanced RISC Machines?? That's the only arm processor I know about. They make 8-bit CPUs Nope. 3. How does the device manage to compute the 8-decimal-digit number that is your input?? -- Grant Edwards grante Yow! Yow! Maybe I should at have asked for my Neutron visi.comBomb in PAISLEY-- Yes I had arm in mind (for some reason) while it is the Smc8831 (http://www.google.com/url?sa=Ustart=1q=http://www.epsondevice.com/www/PDFS/epdoc_ic.nsf/5388db40b5eee4f949256a9c001d589f/944b73008b0bad33492570a00015d6ba/%24FILE/S5U1C88000C_2Ev3.pdfe=9797) 3. How does the device manage to compute the 8-decimal-digit number that is your input?? What device manager ? think about it before being rude Regards, Philippe PS: That is the first time I feel insulted posting on this list in _many_ years ... but I'm certain it is my fault. -- http://mail.python.org/mailman/listinfo/python-list
Re: BCD List to HEX List
John Machin wrote: Philippe Martin wrote: John Machin wrote: Philippe Martin wrote: Philippe Martin wrote: Hi, I'm looking for an algo that would convert a list such as: I'm using python to prototype the algo: this will move to C in an embedded system where an int has 16 bits - I do not wish to use any python library. l1 = [1,2,3,4,6,7,8] #represents the decimal number 12345678 l2 = func (l1) # l2 = [0x1, 0x2, 0xD, 0x6, 0x8, 0x7] #represents 0x12D687 Regards, Philippe Thanks to all, I decided to attack the problem another way and change the code in device #2 so it can now take the output from device #1. As device #2 only needs to compare, add, and subtract the stuff .. it makes my life much simpler. I'm confused. 1. Was the original device #1 or #2? 2. How many bits does the non-original device's C compiler support? 3. If the original device is device #1, please explain where *it* obtained an 8-digit decimal number expressed as 1 digit per byte (or int) ... Well I don't want to bore you guys more than needed ;-) but: Device #1 has an 8 bit processor - uses a C cross-compiler that does not know anything above a 16 bit integer. I use this device to get information from users 1234 Device #2 has an 8 bit processor - uses a subset of Java ... that does not know anything above a 16 bit integer. The information gathered in device number #1 must then be sent to device #2 (after being encrypted ) to be compared, subtracted or added. The code I already have in device #2 makes the assumption that the information received is an array of bytes of length N which represents an actual value. ex: 0x67DF5 == [0x6, 0x7, 0xD, 0xF, 0x5] ... so it can compare/add/subtract values ... and do its job. As a python fan, I figured (back to my initial not very clear request), that I could prototype the above without making any major assumption as to the capabilities of the interpreter. I still believe that to be true. Try this: C:\junktype bcd.py def reconstitute_int(alist): reghi, reglo = 0, 0 for digit in alist: assert 0 = digit = 9 reghi, reglo = mul32by10(reghi, reglo) reghi, reglo = add32(reghi, reglo, 0, digit) return reghi, reglo def uadd16(a, b): return (a + b) 0x def shr32by4(hi, lo): newhi = (hi 4) 0x newlo = ((lo 4) | ((hi 0xF) 12)) 0x return newhi, newlo def add32(hia, loa, hib, lob): lox = uadd16(loa, lob) hix = uadd16(hia, hib) inx = ((lox 0x8000) 13) + ((lob 0x8000) 14) + ((loa 0x8000) 1 5) carry = [0, 1, 1, 1, 0, 0, 0, 1][inx] # The above is admittedly ugly but sheesh I haven't even had my # second cup of coffee yet today :-) # Anybody who's good at solving equations in Boolean algebra, # pls beautify this!! if carry: hix = uadd16(hix, 1) expected = (hia+hib)*65536 + loa + lob actual = hix*65536 + lox if actual != expected: print (hia, loa), (hib, lob), (hix, lox), actual, expected, inx, carry return hix, lox def mul32by10(hi, lo): tmphi, tmplo = add32(hi, lo, hi, lo) # 2 times tmphi, tmplo = add32(tmphi, tmplo, tmphi, tmplo) # 4 times tmphi, tmplo = add32(tmphi, tmplo, hi, lo) # 5 times tmphi, tmplo = add32(tmphi, tmplo, tmphi, tmplo) # 10 times return tmphi, tmplo def make_hex32(aninthi, anintlo): result = [] while aninthi or anintlo: result.append(anintlo 0xF) aninthi, anintlo = shr32by4(aninthi, anintlo) return result def reverse_list(alist): n = len(alist) for i in xrange(n 1): reg1 = alist[n - 1 - i] reg2 = alist[i] alist[i] = reg1 alist[n - 1 - i] = reg2 C:\junkpython Python 2.4.3 (#69, Mar 29 2006, 17:35:34) [MSC v.1310 32 bit (Intel)] on win32 Type help, copyright, credits or license for more information. import bcd num = bcd.reconstitute_int([1,2,3,4,5,6,7,8]) num (188, 24910) num[0]*65536 + num[1] 12345678 result = bcd.make_hex32(*num) result [14, 4, 1, 6, 12, 11] bcd.reverse_list(result) result [11, 12, 6, 1, 4, 14] ['0x%x' % digit for digit in result] ['0xb', '0xc', '0x6', '0x1', '0x4', '0xe'] ^Z Thanks John, I will give it a good look. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: simple question
Maxine Weill wrote: I need to install Python Imaging Library (PIL) - imaging-1.1.5.tar.gz (source ) onto Suse Linux 10.1 system in order for (latest) Scribus 1.3.3.2 to install and work. Plesae indicate how I perform PIL install (exact commands/procedures) in manner where files are automatically placed in proper directories, etc. Your urgent assistance is appreciated. Thanks, Wendell Anderson [EMAIL PROTECTED] or [EMAIL PROTECTED] content of file BUILDME: python setup.py build_ext -i python selftest.py Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: About Embedding PyWin or wxPython
Mr. Roboto wrote: Folks: I want to embark on a project to add Python (actually, wxPython or PythonWin) to a new Windows app I want to start writing soon. Essentially, I want to take VB6 (or pos Delphi) and construct the app framework/core functionality using one of those languages, then extend the app w/ Python, the same way one can extend the MS Office apps using VBA. The core Python docs provide the fundamental info one needs to get started. But, I've been looking for some pointers to articles/web pages that will bootstrap the effort, so I won't have to completely reinvent the wheel. So far, the c.l.p ngroup traffic (and the web in general) that speaks to this subject is apparently pretty sparse. Since I'm a one-man show, it would be helpful if anyone could offer pointers to sites/pages/books that address some of these issues: 1) To COM or not ? From an implementation standpoint, it seems worthwhile to build the host app as a series of COM objects, which could then be ref'd/manipulated via external Python code. Not sure if this makes sense from a performance-perspective, but I doubt the apps I'm thinking about (mostly desk accessory utils kinda, sorta) are going to be compute-intensive at all. 2) SWIG or not ? Have never used it, but know that SWIG has been ref'd many times in the ngroup as an tool for facilitating the use of Python as an embedded language. Is SWIG worth the effort for a relatively small (10 KLOC) app ? 3) Handling exceptions. I want to start from Day One with a sensible approach to debugging and testing both host objects and external scripts. 4) Deployment. Size (30 - 50MB for wxPython or PyWin alone) and a silent install of either pkg prior to installing the host app. Regardless of the conversation in this group, I plan to get started in the next few days. This is how I'm currently looking at the above issues: 1) COM: Yes, since COM seems like an easy fit w/o writing lotsa glue code because of built-in support via PyWin 2) SWIG: Not for a 1st cut, at least not to get one's feet wet, so to speak 3) Exceptions: No clue. Need to closely read Extending/Embedding Python for more guidance 4) Deployment: Bite the disk space bullet and use PyWin or wxPython as is Anyway, that's the beginning of the conversation. If you have any observations or suggestions, please feel free. Later...MR Do you have major performances issues ? why not write everything in Python/WxPython ? I used to write my applications in VB6 with python com objects ... and decided there was no gain there. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: About Embedding PyWin or wxPython
Mr. Roboto wrote: Phillipe: Actually, it's not performance of the core app that concerns me. I'm thinking more about UI/form *design* productivity. I've done a lot of Access work over the years and while the stand-alone VB form designer isn't quite as thorough, it's still one of the slickest out there. Unfortunately, there's no designer for PyWin and wxPython's XRC is nice but not in the same league as what can be done w/ Delphi or VB. Yes, I'm aware that wxWidgets has a real form designer, but that's yet another story, for another day. Making XRC into a more fully-featured tool (more on par w/ the aforementioned) is a way nice project unto itself, but not right now. However, the desk accessory I've mentioned is an excellent 1st step towards *possibly* doing something much bigger Philippe Martin wrote: Do you have major performances issues ? why not write everything in Python/WxPython ? I used to write my applications in VB6 with python com objects ... and decided there was no gain there. Regards, Philippe I personally _really_ like wxDesigner (http://www.roebling.de/) and as under VB6, I always avoided having the tables filled for me (bound forms if I recall) I have not found my productivity go down ... but then again, I never was a VB expert. 1) As others have said, it is very easy to make a Python com object (thank you Mark!) - and as long as Windows keeps supporting COM 2) I chose the COM option 3) If your script does not handle exceptions, you'll have a fairly cryptic VB dialog box telling you about your python com object unhapiness - I find it more easy to handle the expections in the script 4) Yes it takes space - I have an application that uses Python, wxPython, Gadfly, pyserial, HTMLGen . and the whole thing takes 120M I used visual studio to buld a single install for everything- works well. The one open issue I have about wxPython in a com object is how the main event loop (in your core application) will react if a com object with GUI pops-up ... never tried it. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: what's wrong with this if statement?
John Salerno wrote: Here's the full code, but you can probably safely ignore most of it, especially the wxPython stuff: --- import wx class MyFrame(wx.Frame): def __init__(self): wx.Frame.__init__(self, parent=None, id=wx.ID_ANY) panel = wx.Panel(self) mainSizer = wx.BoxSizer(wx.VERTICAL) inputSizer = wx.BoxSizer(wx.HORIZONTAL) self.count = 0 self.progress = wx.Gauge(panel, wx.ID_ANY, 100, size=(300, 20)) self.status = wx.StaticText(panel, wx.ID_ANY, 'test') prompt = wx.StaticText(panel, wx.ID_ANY, 'Time:') self.input = wx.TextCtrl(panel, wx.ID_ANY, size=(20, 20)) self.start = wx.Button(panel, wx.ID_ANY, 'Start') self.timer = wx.Timer(self) mainSizer.Add(self.progress, flag=wx.ALIGN_CENTER | wx.TOP, border=10) mainSizer.Add(self.status, flag=wx.ALIGN_CENTER | wx.ALL, border=10) mainSizer.Add(inputSizer, flag=wx.ALIGN_CENTER) inputSizer.Add(prompt, flag=wx.ALIGN_CENTER) inputSizer.Add(self.input, flag=wx.ALL, border=10) inputSizer.Add(self.start, flag=wx.ALIGN_CENTER) self.Bind(wx.EVT_TIMER, self.OnTimer, self.timer) self.Bind(wx.EVT_BUTTON, self.OnStart, self.start) panel.SetSizer(mainSizer) def OnStart(self, event): self.time = self.input.GetValue() self.timer.Start(1000) def OnTimer(self, event): self.count += 1 if self.count self.time: self.progress.SetValue(self.count) self.status.SetLabel(str(self.count)) class MyApp(wx.App): def OnInit(self): frame = MyFrame() self.SetTopWindow(frame) frame.Show() return True if __name__ == '__main__': app = MyApp(redirect=False) app.MainLoop() The code in question is mainly this: def OnTimer(self, event): self.count += 1 if self.count self.time: self.progress.SetValue(self.count) self.status.SetLabel(str(self.count)) When I run the program, the progress bar and the status label continue to increase even after self.count has (presumably) become larger than self.time. Why is this? All I do is enter in '10' as the value to test it, and it keeps counting even beyond 10. Check the type of self.time: unicode - you need to convert it to int first ... plus your timer will need to be shutdown when you're done. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: first book about python
I don't know, if I were the genious that made up Python I would not believe in any bible (small b) IOANNIS MANOLOUDIS wrote: I want to learn python. I plan to buy a book. I always find printed material more convenient than reading on-line tutorials. I don't know PERL or any other scripting language. I only know some BASH programming. I am looking for a book which will help me get started and should contain the foundations. I am not looking for the Python bible. Any recommendations? Ioannis -- http://mail.python.org/mailman/listinfo/python-list
Re: Icono en wxpython
Try Sourceforge.
(si j'ai bien compris)
Regards,
Philippe
Bruno Desthuilliers wrote:
Gabriel wrote:
Hola:
He echo un programa en wxpython. Se trata de un programa para
desarrollos con microcontroladores como PIC's etc. en cuanto a
transmisión RS232 se refiere.
El programa es GNU y quiero publicarlo pronto pero no se como poner el
ícono a la ventana y al archivo en si...
¿Alguien puede darme una mano con esto?
Otra cosa ¿dónde puedo publicar el programa una vez que este terminado?
Desde ya muchas gracias
Bonjour. Je n'ai pas compris un seul mot de ton post, à part qu'il
concernait une appli wxPython, des microcontrolleurs, et des
transmission RS232. Peut-être que si tu postais la question in English,
ça aiderait un peu ?-)
--
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p in '[EMAIL PROTECTED]'.split('@')])
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Web transaction server in Python
Hi, I know a bit Python as application programming, but very little as a web server. I need to get one server to accept connection requests from many devices (not all PC-Based) and then have a bi-lateral conversation with those devices prior to closing the connection. The said devices have at least a tcp-ip stack (socket level). Is Zope something for me ? what else ? Thanks, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: USB and Python
Many thanks, Philippe Philippe Martin wrote: Hi, I need to talk to a USB device (PC or other) from Python - I am not talking about mounting a file system but sharing information as you would though a TCP-IP socket layer or an RS232 interface. Is there such low-level module available for Windows / Linux ? Thanks, Philippe -- http://mail.python.org/mailman/listinfo/python-list
USB and Python
Hi, I need to talk to a USB device (PC or other) from Python - I am not talking about mounting a file system but sharing information as you would though a TCP-IP socket layer or an RS232 interface. Is there such low-level module available for Windows / Linux ? Thanks, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Python with Eclipse
Dennis Benzinger wrote: Philippe Martin wrote: Dennis Benzinger wrote: Stan Cook wrote: I've been trying to use Eclipse with Python on Linux for a while and have noticed something odd. After running the code or debugging a few times, its responsiveness gets really bad. Upon checking the equivalent of the task manager, I find several instances of Python running. When I kill these instances, the responsiveness comes back. I'm not sure if there is a better place to post this, but it is Python related. Is this just an issue with Eclipse or is there something else I should inspect? Any help would be appreciated. Regards, S Cook Which Python plugin are you using? PyDev? Bye, Dennis Hi, What other plugins are there ? Regards, Philippe In the Python wiki there is a page about Eclipse plugins for Python: http://wiki.python.org/moin/EclipsePythonIntegration Bye, Dennis Thanks, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Python with Eclipse
Dennis Benzinger wrote: Stan Cook wrote: I've been trying to use Eclipse with Python on Linux for a while and have noticed something odd. After running the code or debugging a few times, its responsiveness gets really bad. Upon checking the equivalent of the task manager, I find several instances of Python running. When I kill these instances, the responsiveness comes back. I'm not sure if there is a better place to post this, but it is Python related. Is this just an issue with Eclipse or is there something else I should inspect? Any help would be appreciated. Regards, S Cook Which Python plugin are you using? PyDev? Bye, Dennis Hi, What other plugins are there ? Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Pycrypto
Hi, Look at the bin2ascii module. Philippe luca72 wrote: Excuse me again, If the string is not a sting but hex number how i have to proced : look this page: http://www.cs.eku.edu/faculty/styer/460/Encrypt/JS-AES.html Regards Luca -- http://mail.python.org/mailman/listinfo/python-list
Re: Software Needs Philosophers
Xah Lee wrote: Software Needs Philosophers by Steve Yegge, 2006-04-15. Software needs philosophers. This thought has been nagging at me for a year now, and recently it's been growing like a tumor. One that plenty of folks on the 'net would love to see kill me. People don't put much stock in philosophers these days. The popular impression of philosophy is that it's just rhetoric, just frivolous debating about stuff that can never properly be answered. ?Spare me the philosophy; let's stick to the facts!? The funny thing is, it's philosophers who gave us the ability to think rationally, to stick to the facts. If it weren't for the work of countless philosophers, facts would still be getting people tortured and killed for discovering and sharing them. Does it ever strike you as just a teeny bit odd that after a brief period where philosophy flourished, from maybe 400 B.C.E. to ~100 C.E., we went through a follow-on period of well over one thousand five hundred years during which the Roman Catholic Church enslaved everyone's minds and killed anyone who dared think differently? What's weirder is that we tend to pretend it didn't really happen. We like to just skip right over the dominance of religion over our minds for a hundred generations, and think of religion today as a kindly old grandpa who's just looking out for us kids. No harm, no foul. Let bygones be bygones. Sure, there were massacres and crusades and genocides and torture chambers with teeth grinding and eyes bleeding and intestines torn out in the name of God. But we were all just kids then, right? Nobody does that kind of thing today, at least not in civilized countries. We try not to think about the uncivilized ones. It was philosophers that got us out of that Dark Ages mess, and no small number of them lost their lives in doing so. And today, the philosophy majors are the butts of the most jokes, because after the philosophers succeeded in opening our minds, we forgot why we needed them. And if we stop to think about it at all, we think that it was other people, people who are very unlike us, who committed those atrocities in the name of Faith (regardless of whether it's faith in a god, or in a political party, or any other form of mind control carried out by force). We like to think we live in an enlightened age, but we don't. Humans haven't changed significantly in 10,000 years. We're still killing and torturing each other. It's apparently incredibly easy to decide to kill someone and then do it. Happens every day, all around the world. Torture, too. But those people are just people. If they had been born down the street from you, they'd have gone to school with you, been friends with you, learned to program with you, written blogs and comments, never tortured or killed anyone in the name of an idea. They'd have been you. Which means they are you; you just got lucky in where you were born. One of the commenters on my last blog entry expressed the fervent wish that I drop dead. To be sure, they qualified it with ?on the internet?. But if they really feel that way, especially about something as hilariously and absurdly unimportant in the Grand Scheme as whether the Lisp programming language has any acceptable implementations, then what does it say about us? Everyone who commented angrily on that blog entry was caught. I caught you, anonymous or not, being a religious fanatic. The only ?negative? commenter who doesn't appear to be a religious zombie was Paul Costanza (ironic, since he claims to be the opinionated one), who relegated his comments to pedantic technical corrections. They're welcome, of course; I'm always looking to correct any technical misconceptions I harbor. But they're moot, since even if I was wrong about every single technical point I brought up in that entry, my overall point ? Lisp is not an acceptable Lisp ? remains largely uncontested by the commenters. Some of them just don't get it, which is fine; no harm in that. If you've been using Lisp for years and years, and you've written books and articles and zillions of lines of Lisp code, then you're unlikely to remember anything about what it's like coming to Lisp for the first time. They're religious because they've forgotten what it's like to be a skeptic. But make no mistake; a substantial percentage of people who take a side in any programming language discussion that devolves into a flamewar know exactly what the other side means, and they want to invoke the Ultimate Censorship: drop dead! Killing someone, after all, is one of the best ways to silence them. You also have to burn all their writings, which is getting harder these days; hence the increased vehemence on the 'net. Those of you who've followed what I've written over the past year or so know where I'm going. I'm taking a stand, all right, and it's a very definite one. I'm finding myself drawn
Re: Unable to extract Python source code using Windows
John Machin wrote: http://www.python.org/ftp/python/2.4.3/Python-2.4.3.tar.bz2 And the reason for posting that would be what? WinZip doesn't support bzip2 compression. http://www.python.org/ftp/python/2.4.3/Python-2.4.3.tgz (a gzipped tar file) is what the OP would be better pointed at. FWIW, I have just downloaded the above tgz file and successfully unpacked it with WinZip versions 9 and 10, and with 7-Zip. FWIW2, 7-Zip is *free* and handles bz2 files. I would suggest that the OP's copy of WinZip v10 is stuffed, or his whole download mechanism is stuffed. If he were to investigate properly (as suggested by ScottDD) instead of thrashing about, I never declared myself a winzip expert since I do not use it -- http://mail.python.org/mailman/listinfo/python-list
Re: creating a new database with mysqldb
John Salerno wrote: Since the connect method of mysqldb requires a database name, it seems like you can't use it without having a database already created. So is there a way to connect to your mysql server (without a specified database) in order to create a new database (i.e., the CREATE DATABASE query)? Thanks. I'm no expert but: can't you spawn mysql with a script/scheme ? Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Unable to extract Python source code using Windows
[EMAIL PROTECTED] wrote: You can get Python sources from python.org I'm unable to locate a source file brings that will work with WinZip. Can anybody please point me to the exact URL that will get me to the source code? but it it is tar ball format or a gzip format, than that will work for me as WinZip is not open. http://www.python.org/ftp/python/2.4.3/Python-2.4.3.tar.bz2 -- http://mail.python.org/mailman/listinfo/python-list
nix logon in Python
Hi, Are there any (even prototypes/proof of concept) gdm/kdm/xdm.../-style packages written in Python ? Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: nix logon in Python
Philippe Martin wrote: Hi, Are there any (even prototypes/proof of concept) gdm/kdm/xdm.../-style packages written in Python ? Regards, Philippe I guess to further define my problem: I am looking for clues as to how to launch an X11 session (remote or not) from a Python-TKinter-based application. I got (a few months ago) this hint from this NG but had to work on another project ... I'm now back into it and would like to know how to learn the basics. Thanks. There should be no problem with this. After all, even the greeter is just an X application. Depending on which login manager you use (xdm/kdm/gdm/whatever) the details of getting your Tkinter app to actually be run will vary, though. In gdm, it looks like adding it to the file /etc/X11/gdm/Init/default may be the ticket. It is probably best to run app.tk.call(rename, send, ) in your program, for the reasons outlined in the send(n) manpage: SECURITY The send command is potentially a serious security loophole. On Unix, any application that can connect to your X server can send scripts to your applications. These incoming scripts can use Tcl to read and write your files and invoke subprocesses under your name. Jeff Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Python editor recommendation.
Looking at their flash demo made me want to try it, but after all dependencies installed, I get Fatal Python error: can't initialise module gtksourceview Aborted (core dumped) Is it stable ? Philippe mystilleef wrote: The powerful no-nonsense, no-frills, no-hassle, no-fuzz editor, Scribes. Supports everything you'd want in an editor, it's nimble, fast and agile, and it has virtually no learning curve. http://scribes.sourceforge.net/ http://scribes.sourceforge.net/snippets.htm (Flash Demo) http://www.minds.nuim.ie/~dez/images/blog/scribes.html (GIF Demo) -- http://mail.python.org/mailman/listinfo/python-list
Re: How can I do this with python ?
Xiao Jianfeng wrote: Tim N. van der Leeuw wrote: Your question is insufficiently clear for me to answer. Do you want to know how to read from standard-input in a Python program? Do you want to know how to start an external program from Python, and then connect something to that programs standard input? Do you want to know something else? Please specify! Cheers, --Tim Thanks. For example, I can call vim and do something like this in a shell script, #!/bin/sh vim a.file-EOF :some_vim_command :some_vim_command :w :q EOF I want to know how to call vim and to the same thing with python. Regrads, hi, os.popen should do that. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: List Ctrl
[EMAIL PROTECTED] wrote: Hello together !! I have programmed a List Control and I introduced information in several rows. What I want to do is, modify this information when i select a row and press a button. There two options: - when i do this, a window appears and asks me to introduce the information. - or in the selected row , the last information is removed and lets me to overwrite. Thank you --oOo-oOo-- Servicio de acceso ó correo electrónico vía web da Universidade de Vigo Servicio de acceso al correo electrónico vía web de la Universidad de Vigo Servicios Informáticos [ http://si.uvigo.es ] Universidade de Vigo [ http://www.uvigo.es ] URL: https://correoweb.uvigo.es TkInter, wx Widgets , ., ? What exactly is it that you do not know how to do ? Philippe -- http://mail.python.org/mailman/listinfo/python-list
Is this a legal / acceptable statement ?
Hi, This code works, but is it appropriate ? l_init = False if True == l_init and 1234 = l_value: print 'l_value is initialized' I know I can do this with a try but ... Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this a legal / acceptable statement ?
I'm sorry (typo): l_init = False if True == l_init and 1234 == l_value: print 'l_value is initialized' Note that 1234 == l_value does not get evaluated. Philippe vbgunz wrote: you don't have to say: if True == l_init it is suggested you simply say: if l_init: Remember the and operator requires expressions on both sides to be true to continue. If you notice, your expression on the right side of the 'and' is an assignment and so this is forbidden (SyntaxError). assignments only work on lines by themselves and no where else. if you meant == rather than = remember this, l_value doesn't exist and would pull up a NameError *but* because the first expression evaluates as false the second expression is never evaluated. refactor your code ASAP. good luck! -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this a legal / acceptable statement ?
Larry Bates wrote:
Philippe Martin wrote:
Hi,
This code works, but is it appropriate ?
l_init = False
if True == l_init and 1234 = l_value:
print 'l_value is initialized'
I know I can do this with a try but ...
Philippe
1) You have a syntax error 1234 == l_value (note ==)
2) This doesn't test to see if l_value is initialized
because if it isn't you get:
Traceback (most recent call last):
File
C
\Python24\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py,
line 310, in RunScript
exec codeObject in __main__.__dict__
File junk.py, line 1, in ?
if True == l_init and 1234 == l_value:
NameError: name 'l_init' is not defined
3) It is unclear what l_init is used for in this context.
Setting it to True doesn't tell you anything about l_value.
Normally you do something like:
l_value=None
.
. Intervening code
.
if l_value is None:
print l_value uninitialized
Or (something I never use):
if not locals().has_key('l_value'):
print l_value uninitialized
-Larry Bates
l_init really is a boolean parameter and l_value a value that _might_ exist
in a shelve.
So I just want to have a parameter to a method so if the first value tested
is false (l_init) then the second (l_value) does not get tested ... because
it is the second in the statement and only seems to get evaluated if the
first one is true.
Philippe
--
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Re: Is this a legal / acceptable statement ?
bruno at modulix wrote:
Philippe Martin wrote:
(snip)
l_init really is a boolean parameter and l_value a value that _might_
exist in a shelve.
So I just want to have a parameter to a method so if the first value
tested is false (l_init) then the second (l_value) does not get tested
... because it is the second in the statement and only seems to get
evaluated if the first one is true.
s/seems to get/is/
But this is a really unpythonic way to do things IMHO. Either use a
try/except block (probably the most straightforward solution), or, as in
Larry's post, test for the existence of 'l_value' in locals().
My 2 cents...
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
Well, that was the question - I wanted to avoid that because I'm already in
a try/except and do not like to imbricate them too much.
Philippe
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Re: Active Directory Authentication
Benji York wrote: D wrote: Is it possible to have Python authenticate with Active Directory? Specifically what I'd like to do is have a user enter a username/password, then have Python check the credentials with AD - if what they entered is valid, for example, it returns a 1, otherwise a 0.. Thanks! Install the Win32 extensions from http://starship.python.net/crew/skippy/win32/Downloads.html and do something like this: try: handle=win32security.LogonUser(username, None, password, win32security.LOGON32_LOGON_NETWORK, win32security.LOGON32_PROVIDER_DEFAULT) # We're not going to use the handle, just seeing if we can get it. handle.Close() return True except pywintypes.error, e: # Because of the sheer number of Windows-specific errors that can # occur here, we have to assume any of them mean that the # credentials were not valid. return False -- Benji York I assume then that you can also change user information using the same principle ? I'm trying to switch some VB6 code to python. Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: Is this a legal / acceptable statement ?
bruno at modulix wrote:
Philippe Martin wrote:
bruno at modulix wrote:
Philippe Martin wrote:
(snip)
l_init really is a boolean parameter and l_value a value that _might_
exist in a shelve.
So I just want to have a parameter to a method so if the first value
tested is false (l_init) then the second (l_value) does not get tested
... because it is the second in the statement and only seems to get
evaluated if the first one is true.
s/seems to get/is/
But this is a really unpythonic way to do things IMHO. Either use a
try/except block (probably the most straightforward solution), or, as in
Larry's post, test for the existence of 'l_value' in locals().
My 2 cents...
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
Well, that was the question - I wanted to avoid that because I'm already
in a try/except and do not like to imbricate them too much.
Then reads Fredrik's answer and this:
'''
Help on module shelve:
(...)
DESCRIPTION
A shelf is a persistent, dictionary-like object.
(...)
What about :
if shelf.has_key('l_value'):
...
?-)
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
Yes that would make sense.
Philippe
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Re: Is this a legal / acceptable statement ?
Fredrik Lundh wrote: Philippe Martin wrote: l_init really is a boolean parameter and l_value a value that _might_ exist in a shelve. So I just want to have a parameter to a method so if the first value tested is false (l_init) then the second (l_value) does not get tested ... because it is the second in the statement and only seems to get evaluated if the how do you look things up in the shelve ? /F l_value = m_data['MY_KEY'] Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: cross platform libraries
Through Wine maybe ? Philippe Dennis Lee Bieber wrote: On 4 May 2006 09:57:15 -0700, [EMAIL PROTECTED] declaimed the following in comp.lang.python: I am using python on a linux terminal. I want to shutdown a remote windows box. I found a script which does something like this. My question is can we use windows libraries in linux as follows import win32api import win32con import win32netcon import win32security import win32wnet That set... HIGHLY UNLIKELY... They all rely upon having the M$ kernel DLLs available... Now, if the remote box is running a telnet server, you might be able to telnet over (logging in as the boxes admin account) and initiate a shutdown from it... (I seem to have a shutdown.exe on my system). -- Wulfraed Dennis Lee Bieber KD6MOG [EMAIL PROTECTED] [EMAIL PROTECTED] HTTP://wlfraed.home.netcom.com/ (Bestiaria Support Staff: [EMAIL PROTECTED]) HTTP://www.bestiaria.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Gettings subdirectories
Hi, The second edition of Programming Python - O'REILLY - Mark Lutz shows how to do that using os.path.walk Philippe Florian Lindner wrote: Hello, how can I get all subdirectories of a given directories? os.listdir() gives me all entries and I've found no way to tell if an object is a file or a directory. Thanks, Florian -- http://mail.python.org/mailman/listinfo/python-list
Re: Progamming python without a keyboard
That reminds me a session in an RD lab a long time ago One of the guys kept talking to himself, commenting code, bugs . he drove me nuts Eventually (weeks later) another guy silently stood up, went to the first guy, and without a word attempted to strangle him. He got stopped ... but did not get fired (I guess even the management was tired of the first guy rambling) We should be aware of all types of RSI. (I'm still laughing) Philippe Rony Steelandt wrote: http://www.newscientisttech.com/article/dn9066 To nice to be true ? R_ -- --- Rony Steelandt BuCodi rony dot steelandt (at) bucodi dot com Visit the python blog at http://360.yahoo.com/bucodi -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython, wxcombobox opening
Hi, From the wxPython list: Hi, Which event must I catch to be called when the user clicks on the combo button to make the drop down list to appear ? No, there isn't a specific event for the opening of the drop-down box. Regards, Philippe Philippe Martin wrote: Hi, I do not have the answer but am very interested in the issue. I tried this: l_ev = wx.MouseEvent(wx.wxEVT_LEFT_DOWN) l_ev.SetEventObject(self.GetCombo()) self.GetEventHandler().ProcessEvent(l_ev) Which did send the event to the combo (which is in a pannel in my case) .. but that is apparently not the event that triggers the dropping of the list. I posed elsewhere and will forward here any hint. Philippe Rony Steelandt wrote: Hi, Does somebody knows a way to automaticely open the list part of a wxCombobox when it gets the focus ? tia, Rony -- http://mail.python.org/mailman/listinfo/python-list
Re: OOP techniques in Python
Thanks, Did not know that. Philippe Dennis Lee Bieber wrote: On Thu, 27 Apr 2006 14:32:15 -0500, Philippe Martin [EMAIL PROTECTED] declaimed the following in comp.lang.python: What then is the point of the double underscore (if any) ?: To prevent masking/shadowing of inherited attributes... class A(object): ... def __init__(self): ... self.__WhoMe = From A ... print A : , dir(self) ... super(A, self).__init__() ... class B(object): ... def __init__(self): ... self.__WhoMe = 42 ... print B : , dir(self) ... super(B, self).__init__() ... class Confusion(A, B): ... def __init__(self): ... self.__WhoMe = I'm confuzzled ... print Confusion: , dir(self) ... super(Confusion, self).__init__() ... cab = Confusion() Confusion: ['_Confusion__WhoMe', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] A : ['_A__WhoMe', '_Confusion__WhoMe', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] B : ['_A__WhoMe', '_B__WhoMe', '_Confusion__WhoMe', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] Note that A, B, and Confusion each have __WhoMe. Also notice how each __init__ invokes the parent module __init__; each one adds its __WhoMe to the object without masking those defined in others. Without the __, you'd have only ONE attribute after all of that; as shown next... class A(object): ... def __init__(self): ... self._WhoMe = From A ... print A : , dir(self) ... super(A, self).__init__() ... class B(object): ... def __init__(self): ... self._WhoMe = 42 ... print B : , dir(self) ... super(B, self).__init__() ... class Confusion(A, B): ... def __init__(self): ... self._WhoMe = I'm confuzzled ... print Confusion: , dir(self) ... super(Confusion, self).__init__() ... cab2 = Confusion() Confusion: ['_WhoMe', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] A : ['_WhoMe', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] B : ['_WhoMe', '__class__', '__delattr__', '__dict__', '__doc__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__str__', '__weakref__'] -- == [EMAIL PROTECTED] | Wulfraed Dennis Lee Bieber KD6MOG [EMAIL PROTECTED] | Bestiaria Support Staff == Home Page: http://www.dm.net/~wulfraed/ Overflow Page: http://wlfraed.home.netcom.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython, wxcombobox opening
Hi, I do not have the answer but am very interested in the issue. I tried this: l_ev = wx.MouseEvent(wx.wxEVT_LEFT_DOWN) l_ev.SetEventObject(self.GetCombo()) self.GetEventHandler().ProcessEvent(l_ev) Which did send the event to the combo (which is in a pannel in my case) .. but that is apparently not the event that triggers the dropping of the list. I posed elsewhere and will forward here any hint. Philippe Rony Steelandt wrote: Hi, Does somebody knows a way to automaticely open the list part of a wxCombobox when it gets the focus ? tia, Rony -- http://mail.python.org/mailman/listinfo/python-list
Re: print names of dictionaries
Hi,
I do not know if there is a way to overload the instantiation of all objects
in Python but I thought of something like this to fetch any object with its
name:
g_dict = {}
def create_object (v,s):
p = v
g_dict[s] = id(p)
return p
#ex
object = create_object ([1,2,3,4], 'A LIST')
Philippe
Thomas Nelson wrote:
Here's an OO way that may do what you want:
class MyD(dict):
... def __init__(self,dic,rep):
... dict.__init__(self,dic)
... self.rep = rep
... def __repr__(self):
... return self.rep
...
apps = MyD({'alpha':1,'beta':2},'apps')
apps
apps
apps.keys()
['alpha', 'beta']
Of course, the easiest way is just to use a tuple (dict,string).
THN
--
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Re: print names of dictionaries
OK, totally dumb !
g_dict[s] = p
Philippe Martin wrote:
Hi,
I do not know if there is a way to overload the instantiation of all
objects in Python but I thought of something like this to fetch any object
with its name:
g_dict = {}
def create_object (v,s):
p = v
g_dict[s] = id(p)
return p
#ex
object = create_object ([1,2,3,4], 'A LIST')
Philippe
Thomas Nelson wrote:
Here's an OO way that may do what you want:
class MyD(dict):
... def __init__(self,dic,rep):
... dict.__init__(self,dic)
... self.rep = rep
... def __repr__(self):
... return self.rep
...
apps = MyD({'alpha':1,'beta':2},'apps')
apps
apps
apps.keys()
['alpha', 'beta']
Of course, the easiest way is just to use a tuple (dict,string).
THN
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Re: OOP techniques in Python
Why is that ? to me it makes sense when I see self.__m_var that I'm dealing
with a member variable taht derived classes will not see/access.
Philippe
Steven Bethard wrote:
Panos Laganakos wrote:
we usually define private properties and provide public functions
to access them, in the form of:
get { ... } set { ... }
Should we do the same in Python:
self.__privateAttr = 'some val'
def getPrivateAttr(self):
return self.__privateAttr
Or there's no point in doing so?
There is no point in doing so. You should use plain attributes whenever
possible (that is, whenever you're really just doing a get or a set,
with no computation). The only reason to use getters and setters is so
that you can change the implementation later if you need to. But python
allows you to do this with properties:
class C(object):
... def __init__(self, x):
... self.x = x
...
C(42).x
42
class C(object):
... def _get_x(self):
... return self._x * 2
... def _set_x(self, value):
... self._x = value / 2
... x = property(_get_x, _set_x)
... def __init__(self, x):
... self.x = x
...
C(42).x
42
Which should not be interpreted as saying you should start writing a
bunch of properties now. ;) Instead, only introduce a property when you
find that something must remain an attribute (presumably for backwards
compatibility reasons) but for whatever reason it now needs some
additional computation.
STeVe
--
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Re: OOP techniques in Python
Steven Bethard wrote:
[Please don't top-post]
Steven Bethard wrote:
Panos Laganakos wrote:
we usually define private properties and provide public functions
to access them, in the form of:
get { ... } set { ... }
Should we do the same in Python:
self.__privateAttr = 'some val'
def getPrivateAttr(self):
return self.__privateAttr
Or there's no point in doing so?
There is no point in doing so. You should use plain attributes
whenever possible (that is, whenever you're really just doing a get or
a set, with no computation). The only reason to use getters and
setters is so that you can change the implementation later if you need
to. But python allows you to do this with properties:
[snip]
Which should not be interpreted as saying you should start writing a
bunch of properties now. ;) Instead, only introduce a property when
you find that something must remain an attribute (presumably for
backwards compatibility reasons) but for whatever reason it now needs
some additional computation.
Philippe Martin top-posted:
Why is that ? to me it makes sense when I see self.__m_var that I'm
dealing with a member variable taht derived classes will not see/access.
If the OP uses a private attribute in combination with a getter and a
setter, he's basically still exposing the attribute as public, but
making it harder to get and set. There's no reason to do that. If
you're going to expose a public API to part of the class that just
assigns and returns a value (with no computation), you might as well
make that API an attribute instead of a pair of methods.
STeVe
[Please don't top-post]
OK I won't, is that a general rule? (I've been top posting for quite some
time now and it is the first time I see that warning)
Philippe
--
---
Poignée trop essorée, moulin bien rincé
Pierre Lafouine
---
--
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Re: OOP techniques in Python
Edward Elliott wrote:
Panos Laganakos wrote:
i.e. we usually define private properties and provide public functions
to access them, in the form of:
get { ... } set { ... }
Should we do the same in Python:
Or there's no point in doing so?
Some other techniques come to mind, but I think that Python tends to
allow the programmer to access stuff he wants even though he shouldn't
or in the form of a dict or list, rather than a method to do so.
There's no point. Private access can only be advisory anyway -- there are
ways around it in every language. Convention serves just as well, people
know that touching _foo is done at their own risk. It's not creating
extra hoops to jump through the few times you really do need to touch a
private var.
Others already mentioned how to transparently change attributes to
properties.
If you're worried about enforcing restrictions in your code base, get a
lint checker to flag any expression of the form name._foo where name isn't
'self'. Yes you can still access _foo other ways, but you'll never get
perfect enforcement anyway. Maybe the extra step will make you think
twice, if that's what you want (and it seems to be).
--
What then is the point of the double underscore (if any) ?:
In [2]:class test:
.2.: _one_underscore=1
.2.: __two_underscores=2
.2.:
In [3]:t = test()
In [4]:t._one_underscore=2
In [5]:t.__two_underscores=3
In [6]:t.__two_underscores
Out[6]:3
In [7]:dir (test)
Out[7]:['__doc__', '__module__', '_one_underscore',
'_test__two_underscores']
In [8]:test._one_underscore
Out[8]:1
In [9]:test.__two_underscores
---
exceptions.AttributeErrorTraceback (most recent
call last)
/home/philippe/ipython console
AttributeError: class test has no attribute '__two_underscores'
-
Poignée trop essorée, moulin bien rincé
Pierre Lafouine
---
--
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Re: OOP techniques in Python
Edward Elliott wrote: Philippe Martin wrote: '' On the other hand, foo.__doc__ and foo.__name__ work fine. (I was going to quote your post but my reader interprets everything after the two dashes as your sig and ignores it. And I won't bother to fix it.) I'm not sure I understand what you mean ... I did get a strange new message from my email client and disabled the signature. -- http://mail.python.org/mailman/listinfo/python-list
Re: OOP techniques in Python
Duncan Booth wrote: Philippe Martin wrote: Steven Bethard wrote: [Please don't top-post] OK I won't, is that a general rule? (I've been top posting for quite some time now and it is the first time I see that warning) Yes. Other suggestions you might get are not to bottom post, and certainly not (as you did elsewhere) to post your response as a signature (i.e. following a line containing only two dashes and a space). The accepted way to follow up is to trim the post to which you are responding so as to maintain sufficient context to make the post intelligible on its own, but not to quote the entire post: most newsreader programs will help you in this by either warning or indeed refusing to post responses which have too many quoted lines compared with new content. It is perfectly reasonable if you are making several points to intersperse your comments with other quoted sections. Some newsgroups use a different convention and expect top-posting without trimming of the quoted posts, but these very much are in the minority. :-) I did try the signature for the first time today, and stopped as I get weird errors from my client and certainly do not wish to get flame just because I like a cute message. My assumption always was: 1) keep all data in the post so new viewers can understand get the full content, including the initial post 2) write on top because when you open a file, you want the chronological info on top instead of at the very bottom ... since because of 1) this could be miles away. But if the rules are otherwise then I'll just follow them. Regards, Philippe -- http://mail.python.org/mailman/listinfo/python-list
Re: wxpython warnings
I had a similar but simple problem (the file was missing) and had to check by hand before calling wxPython. Can you check the tag by hand before calling wxPython ? Philippe Iain King wrote: I have a wxpython program that displays TIF images. Sometimes it will encounter a tag the tiff loader cant handle. Rather than silently ignoring it, it pops up a window: Python Warning unknown field with tag blah blah I don't want it to do this, but I can't work out how to turn it off. Anyone know? Iain -- http://mail.python.org/mailman/listinfo/python-list
Re: Inherit from array
I think he did
from array import *
Philippe
bruno at modulix wrote:
TG wrote:
Hi there.
I'm trying to create a simple class called Vector which inherit from
array.
Which array ?
[EMAIL PROTECTED] ~ $ python
Python 2.4.2 (#1, Feb 9 2006, 02:40:32)
[GCC 3.4.5 (Gentoo 3.4.5, ssp-3.4.5-1.0, pie-8.7.9)] on linux2
Type help, copyright, credits or license for more information.
array
Traceback (most recent call last):
File stdin, line 1, in ?
NameError: name 'array' is not defined
--
bruno desthuilliers
python -c print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])
--
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Re: Events in Python?
Besides the other anwsers, you might want to check the signal module. Regards, Philippe [EMAIL PROTECTED] wrote: Here is another non-pythonic question from the Java Developer. (I beg for forgiveness...) Does Python have a mechanism for events/event-driven programming? I'm not necessarily talking about just GUIs either, I'm interested in using events for other parts of an application as well. If there isn't some sort of event mechanism built into Python, where might I find some information about implementing one? Thanks, Scott Huey -- http://mail.python.org/mailman/listinfo/python-list
Re: wxpython warnings
Hi, This is an answer I got from the wxPython NG: If it is a wxLog message (I think it is) then you can temporarily disable log messages by creating an instance of wx.LogNull. Or you can do something like set the log target to some other object than the default wx.LogGui, or set the log level to a higher level so those messages are not logged. Regards, Philippe Iain King wrote: I have a wxpython program that displays TIF images. Sometimes it will encounter a tag the tiff loader cant handle. Rather than silently ignoring it, it pops up a window: Python Warning unknown field with tag blah blah I don't want it to do this, but I can't work out how to turn it off. Anyone know? Iain -- http://mail.python.org/mailman/listinfo/python-list
Re: MinGW and Python
This might relevant. http://www.aceshardware.com/read.jsp?id=153 Philippe Robert Kern wrote: Martin v. Löwis wrote: Srijit Kumar Bhadra wrote: Is there any specific reason for not using MinGW to build the official distribution of Python for Win32? What could be the reasons to use MinGW? As for reasons not to do that: - there is no build process available to do that - people building extensions to Python must be able to do so with Microsoft C++, since some of these extensions are written using MFC. - developing Python itself in Visual Studio is quite convenient; in particular, the debugger works better than gdb. - gcc does not optimize particularly well. -- Robert Kern [EMAIL PROTECTED] I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth. -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: Multiple hierarchies and method overloading
Well, the whole point was to clean up my code: Actually this is what I have: Class A: def A_Func(self, p_param): . Class B: def A_Func(self): . Class C (A,B): A.__init__(self) B.__init__(self) Class D (A,B): A.__init__(self) B.__init__(self) Where A is a wxWidget class and B a Common/utility class which I wanted to factorize (and yes, inheritance was not mandatory here, just simpler) My common class does have an A_Func(self) while wxWidget an A_Func(self, p_param) == I actually got the error calling A_Func(self) as it was checked against A_Func(self, p_param). Regards, Philippe Lawrence D'Oliveiro wrote: In article [EMAIL PROTECTED], Ben Cartwright [EMAIL PROTECTED] wrote: Philippe Martin wrote: I renamed A_Func(self) to fix that ... but is there a cleaner way around ? When using multiple inheritence, the order of the base classes matters! When you have to start worrying about complications like this, isn't that a sign that you're taking the whole OO thing a little too seriously? After all, technology is supposed to _solve_ problems, not create them. If the complications of OO are making you lose sight of your original problem, then maybe you should put them aside. -- http://mail.python.org/mailman/listinfo/python-list
Re: Multiple hierarchie and method overloading
Thanks, I'll try that. Philippe Ben Cartwright wrote: Philippe Martin wrote: I have something like this: Class A: def A_Func(self, p_param): . Class B: def A_Func(self): . Class C (A,B): A.__init__(self) B.__init__(self) . self.A_Func() #HERE I GET AN EXCEPTION ... takes at least 2 arguments (1 given). I renamed A_Func(self) to fix that ... but is there a cleaner way around ? When using multiple inheritence, the order of the base classes matters! E.g.: class A(object): def f(self): print 'in A.f()' class B(object): def f(self): print 'in B.f()' class X(A, B): pass class Y(B, A): pass x = X() x.f() in A.f() y = Y() y.f() in B.f() If you want to call B.f() instead of A.f() for an X instance, you can either rename B.f() like you've done, or do this: B.f(x) in B.f() --Ben -- http://mail.python.org/mailman/listinfo/python-list
