Re: Game programming for kids: looking for open source 2D game development kit
John Salerno [EMAIL PROTECTED] writes: Laurent Pointal wrote: With Python: * pygame + build your drag'n drop features * if you like 3D, vpython. http://www.pygame.org/ http://www.vpython.org/ Wow, vpython looks pretty need. I'm messing around with it right now and reading the docs. But I can't find something...do you know how to clear the contents of the current scene? I checked the attributes of the display, but there is nothing like empty that would do it. for x in scene.objects: x.visible = 0 ? -- http://mail.python.org/mailman/listinfo/python-list
Re: Hpw make lists that are easy to sort.
Paul Rubin wrote: Oh, I see what you mean. I don't see an obvious faster way to do it and I don't have the feeling that one necessarily exists. As someone mentioned, you could do an n-way merge, which at least avoids using quadratic memory. Here's a version using Frederik Lundh's trick of representing a lazy list as its head plus the generator for the tail: That's a beautiful trick! I was just exploring some idea about traversing the matrix starting from the upper left and ending at the lower right by forming some kind of wave like front line. It's currently very slow but I hope it can be polished a bit. Also I was trying to figure out if it could have any advantage over the straight row by row merge, but now that these lazy rows have appeared the field has changed a lot :-) def typewriter(L,R): Z = [0] * len(R) M = [(L[0]+R[0],0)] while M: val,k = min(M) yield val Z[k] += 1 M = [] for k,x in enumerate(Z): if x len(R): M.append((L[k]+R[x],k)) if not x: break A. -- http://mail.python.org/mailman/listinfo/python-list
wx textctrl font style
Hello I have a tuple of strings which I must show in a textctrl, each item in the tuple representing one line of text. The first three lines of text should each have another style (fontsize and color) i'm using this code to achieve this: tmppos = self.txtInfo.GetInsertionPoint() # get the cursor pos self.txtInfo.write(str(csr[0])+'\n') tmppos2 = self.txtInfo.GetInsertionPoint() # get the new cursor pos self.txtInfo.SetStyle(tmppos, tmppos2, wx.TextAttr(BLUE, wx.NullColour, tmpnewfont)) self.txtInfo.write(str(csr[1])+'\n') tmppos3 = self.txtInfo.GetInsertionPoint() # get the new cursor pos self.txtInfo.SetStyle(tmppos2, tmppos3, wx.TextAttr(BLUE, wx.NullColour, tmpnewfont2)) self.txtInfo.write(str(csr[2])+'\n') tmppos4 = self.txtInfo.GetInsertionPoint() # get the new cursor pos self.txtInfo.SetStyle(tmppos3, tmppos4, wx.TextAttr(wx.Nullcolour, wx.NullColour, tmpnewfont3)) Now, I was wondering if this is the right way of doing this, because I have the feeling this code sucks. Anybody has a better way of doing this? Thx !!! -- http://mail.python.org/mailman/listinfo/python-list
Send Anti-Flickering off to logitech cam
Hi, I am currently working with a Logitech Quickcam STX via USB. Using the VideoCapture module to make pictures. Because the camera is outside I will have to turn off a special Option on the camera called Anti- Flickering. Is there anyway that I can send a hardware seq to the cam to do this. Or manipulate the driver (Accessed via DirectX). Any ideals what path I should follow to achieve this? Thx bytesman -- http://mail.python.org/mailman/listinfo/python-list
Re: with timeout(...):
Hendrik van Rooyen [EMAIL PROTECTED] wrote: Nick Craig-Wood [EMAIL PROTECTED] wrote: I'd like there to be something which works well enough for day to day use. Ie doesn't ever wreck the internals of python. It could have some caveats like may not timeout during C functions which haven't released the GIL and that would still make it very useable. I second this (or third or whatever if my post is slow). It is tremendously useful to start something and to be told it has timed out by a call, rather than to have to unblock the i/o yourself and to busy-loop to see if its successful. Yes, exactly! And from what I can see the select functionality is not much different from busy looping... Conceptually it is no different. In practice your process goes to sleep until the OS wakes it up again with more data so it is much more CPU efficient (and possibly lower latency) than busy waiting. -- Nick Craig-Wood [EMAIL PROTECTED] -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
Re: with timeout(...):
John Nagle [EMAIL PROTECTED] wrote: Diez B. Roggisch wrote: Nick Craig-Wood wrote: Did anyone write a contextmanager implementing a timeout for python2.5? And have it work reliably and in a cross platform way! Cross platform isn't the issue here - reliability though is. To put it simple: can't be done that way. You could of course add a timer to the python bytecode core, that would jump back to a stored savepoint or something like that. Early versions of Scheme had a neat solution to this problem. You could run a function with a limited amount of fuel. When the fuel ran out, the call returned with a closure. You could run the closure again and pick up from where the function had been interrupted, or just discard the closure. That sounds like a really nice concept. That would enable you to make long running stuff yield without threads too. I wonder if it is possible in python... -- Nick Craig-Wood [EMAIL PROTECTED] -- http://www.craig-wood.com/nick -- http://mail.python.org/mailman/listinfo/python-list
Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Hi all, I have recently released version 0.0.20 and 0.0.21 of Shed Skin, an optimizing Python-to-C++ compiler. Shed Skin allows for translation of pure (unmodified), implicitly statically typed Python programs into optimized C++, and hence, highly optimized machine language. Besides many bug fixes and optimizations, these releases add the following changes: -support for 'bisect', 'collections.deque' and 'string.maketrans' -improved 'copy' support -support for 'try, else' construction -improved error checking for dynamic types -printing of floats is now much closer to CPython For more details about Shed Skin and a collection of 27 programs, at a total of about 7,000 lines, that it can compile (resulting in an average speedup of about 39 times over CPython and 11 times over Psyco on my computer), please visit the homepage at: http://mark.dufour.googlepages.com I could really use more help it pushing Shed Skin further. Simple ways to help out, but that can save me lots of time, are to find smallish code fragments that Shed Skin currently breaks on, and to help improve/optimize the (C++) builtins and core libraries. I'm also hoping someone else would like to deal with integration with CPython (so Shed Skin can generate extension modules, and it becomes easier to use 'arbitrary' external CPython modules such as 're' and 'pygame'.) Finally, there may be some interesting Master's thesis subjects in improving Shed Skin, such as transforming heap allocation into stack- and static preallocation, where possible, to bring performance even closer to manual C++. Please let me know if you are interested in helping out, and/or join the Shed Skin mailing list. Thanks! Mark Dufour. -- One of my most productive days was throwing away 1000 lines of code - Ken Thompson -- http://mail.python.org/mailman/listinfo/python-list
Re: Long way around UnicodeDecodeError, or 'ascii' codec can't decode byte
Oleg Parashchenko napisał(a): I spent two hours fixing it, and I hope it's done. The solution is one of the ugliest hack I ever written, but it solves the pain. The full story and the code is in my blog: http://uucode.com/blog/2007/03/23/shut-up-you-dummy-7-bit-python/ Calling sys.setdefaultencoding might not even help in this case, and the consensus is that it may be harmful to your code's portability [1]. Yes, but I think UTF-8 is now everywhere. No, it is not. Your own system is not ready for UTF-8, as you stated somewhere in this blog entry. How can you expect everybody else's system being utf-8, while you are not ready for transition? It would be better if you write your programs in encoding-agnostic way, using byte streams only for input and output (yes, printing a debug statement on terminal *is* a kind of producing the output). An, oh, you cann't encode/decode text not knowing the encoding... -- Jarek Zgoda http://jpa.berlios.de/ -- http://mail.python.org/mailman/listinfo/python-list
os.system questions
Hi;
I have a couple bugs to work out in the below script; namely, I don't know
how to capture the result of an os.system command, nor am I convinced that
the call to os.system actually results in the execution of the command. Here
is the script:
#!/usr/local/bin/python
import re, os
def freshReboot():
up = os.system(uptime)
if re.search('day|hour', up):
pass
else:
first = up
tup = re.split('min', up)
first = tup[0]
n = len(first)
char = first[n-3:n-2]
if re.match(' ', char):
os.system(/usr/local/etc/rc.d/zz_mysql_starter_script.sh)
Here are my problems:
up = os.system(uptime)
How do I assign the output of uptime to the variable up?
os.system(/usr/local/etc/rc.d/zz_mysql_starter_script.sh)
When I substitute a test variable for up, I don't get this script to
actually run. Everything else is tested and works. Why won't this script
run?
TIA,
Eric
_
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Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Mark Dufour wrote: Shed Skin allows for translation of pure (unmodified), implicitly statically typed Python programs into optimized C++, and hence, ^ highly optimized machine language. Wow, I bet all C++ compiler manufacturers would want you to work for them. Regards, Björn -- BOFH excuse #23: improperly oriented keyboard -- http://mail.python.org/mailman/listinfo/python-list
Re: What are OOP's Jargons and Complexities
On Fri, 30 Mar 2007 09:28:36 +0100, bugbear
[EMAIL PROTECTED] wrote:
Er. How about
public class test {
public static void main(String[] args) {
String a = a string;
String b = another one;
StringBuffer c = a + b;
System.out.println(c);
}
}
Even better: pick one entry of your choice from
http://images.google.com/images?q=%22don%27t+feed+the+troll%22
Michele
--
{$_=pack'B8'x25,unpack'A8'x32,$a^=sub{pop^pop}-(map substr
(($a||=join'',map--$|x$_,(unpack'w',unpack'u','G^RY]*YB='
.'KYU;*EVH[.FHF2W+#\Z*5TI/ERZ`S(G.DZZ9OX0Z')=~/./g)x2,$_,
256),7,249);s/[^\w,]/ /g;$ \=/^J/?$/:\r;print,redo}#JAPH,
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Sorting a multidimensional array by multiple keys
Hello everyone, can I sort a multidimensional array in Python by multiple sort keys? A litte code sample would be nice! Thx, Rehceb -- http://mail.python.org/mailman/listinfo/python-list
Re: os.system questions
Eric Price schrieb: up = os.system(uptime) How do I assign the output of uptime to the variable up? | print os.system.__doc__ | system(command) - exit_status | | Execute the command (a string) in a subshell. os.system returns the exitcode of the given command. To get the output try os.popen to os.popen4 or the commands lib. Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: os.system questions
On 3/31/07, Eric Price [EMAIL PROTECTED] wrote:
Hi;
I have a couple bugs to work out in the below script; namely, I don't know
how to capture the result of an os.system command, nor am I convinced that
the call to os.system actually results in the execution of the command. Here
is the script:
#!/usr/local/bin/python
import re, os
def freshReboot():
up = os.system(uptime)
if re.search('day|hour', up):
pass
else:
first = up
tup = re.split('min', up)
first = tup[0]
n = len(first)
char = first[n-3:n-2]
if re.match(' ', char):
os.system(/usr/local/etc/rc.d/zz_mysql_starter_script.sh)
Here are my problems:
up = os.system(uptime)
How do I assign the output of uptime to the variable up?
os.system(/usr/local/etc/rc.d/zz_mysql_starter_script.sh)
When I substitute a test variable for up, I don't get this script to
actually run. Everything else is tested and works. Why won't this script
run?
os.system doesn't allow you to get the output of the program, use
os.popen instead.
example:
import os
up = os.popen('uptime').readlines()
Cheers,
--
Amit Khemka -- onyomo.com
Home Page: www.cse.iitd.ernet.in/~csd00377
Endless the world's turn, endless the sun's Spinning, Endless the quest;
I turn again, back to my own beginning, And here, find rest.
--
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Re: Sorting a multidimensional array by multiple keys
Rehceb Rotkiv schrieb: can I sort a multidimensional array in Python by multiple sort keys? A litte code sample would be nice! You can pass a function as argument to the sort method of a list. The function should take two arguments and return -1, 0 or 1 as comparison result. Just like the cmp function. This will objects in list obj_lst by their id attributes: def sorter(a, b): return cmp(a.id, b.id) obj_lst.sort(sorter) Thomas -- http://mail.python.org/mailman/listinfo/python-list
Need help with python and pyxml on AIX
I have been asked to install a python application on AIX 5.3 that runs OK on Windows I have installed Python 4.2.2 from python.org and pyXML form sourceforge. However when I run the application I get the following error : class xml.sax._exceptions.SAXReaderNotAvailable Do I need to set some Python environment variables? Can I test the availibility of this from the python command line. e.g import something? I am new to Python -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a multidimensional array by multiple keys
Rehceb Rotkiv: can I sort a multidimensional array in Python by multiple sort keys? A litte code sample would be nice! If you want a good answer you have to give me/us more details, and an example too. Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
Re: os.system questions
Great! That seems to work fine:
#!/usr/local/bin/python
import re, os
def freshReboot():
up = os.popen('uptime').readlines()
up = up[0]
if re.search('day|hour', up):
pass
else:
tup = re.split('min', up)
first = tup[0]
n = len(first)
char = first[n-3:n-2]
if re.match(' ', char):
os.system(/usr/local/etc/rc.d/zz_mysql_starter_script.sh)
However, I don't see evidence that the os.system call at the end actually
executes said script. The reason for this screwy script is because MySQL
doesn't set the proper environment on boot and that screws up my Zope
instances. So, I'll cron this script to run every 6 mins. If the server has
been up less than 10 mins, this script will run. So, I rebooted the server
and ran the script. But it didn't execute the os.system script at the end!
If I run this from the python prompt instead:
import re, os
def a():
up = os.popen('uptime').readlines()
up = up[0]
up = 7:25AM up 2 mins, 1 user, load averages: 2.42, 1.01, 0.41
if re.search('day|hour', up):
pass
else:
tup = re.split('min', up)
first = tup[0]
n = len(first)
char = first[n-3:n-2]
if re.match(' ', char):
print gotcha!
it prints gocha! Now, that substitution for the up var is what I got as
output from the uptime command at the shell prompt. So, obviously, it
should be running the script! What am I doing wrong?
TIA,
Eric
_
Watch free concerts with Pink, Rod Stewart, Oasis and more. Visit MSN
Presents today.
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Re: os.system questions
Oops! The problem isn't in the os.system call. It's in the fact that I don't
call the function. That is, I write a script called test.py with a
function in it called freshReboot. Now, how do I call that function from
test.py? That is, how do I write a cron event such that freshReboot
actually gets called when I run test.py?
TIA,
Eric
From: Eric Price [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
CC: python-list@python.org
Subject: Re: os.system questions
Date: Sat, 31 Mar 2007 09:33:03 -0400
Great! That seems to work fine:
#!/usr/local/bin/python
import re, os
def freshReboot():
up = os.popen('uptime').readlines()
up = up[0]
if re.search('day|hour', up):
pass
else:
tup = re.split('min', up)
first = tup[0]
n = len(first)
char = first[n-3:n-2]
if re.match(' ', char):
os.system(/usr/local/etc/rc.d/zz_mysql_starter_script.sh)
However, I don't see evidence that the os.system call at the end actually
executes said script. The reason for this screwy script is because MySQL
doesn't set the proper environment on boot and that screws up my Zope
instances. So, I'll cron this script to run every 6 mins. If the server has
been up less than 10 mins, this script will run. So, I rebooted the server
and ran the script. But it didn't execute the os.system script at the end!
If I run this from the python prompt instead:
import re, os
def a():
up = os.popen('uptime').readlines()
up = up[0]
up = 7:25AM up 2 mins, 1 user, load averages: 2.42, 1.01, 0.41
if re.search('day|hour', up):
pass
else:
tup = re.split('min', up)
first = tup[0]
n = len(first)
char = first[n-3:n-2]
if re.match(' ', char):
print gotcha!
it prints gocha! Now, that substitution for the up var is what I got as
output from the uptime command at the shell prompt. So, obviously, it
should be running the script! What am I doing wrong?
TIA,
Eric
_
Watch free concerts with Pink, Rod Stewart, Oasis and more. Visit MSN
Presents today.
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quotes - *Terms
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Re: Sorting a multidimensional array by multiple keys
If you want a good answer you have to give me/us more details, and an example too. OK, here is some example data: reaction is BUT by the sodium , BUT it is sea , BUT it is this manner BUT the dissolved pattern , BUT it is rapid , BUT it is As each line consists of 5 words, I would break up the data into an array of five-field-arrays (Would you use lists or tuples or a combination in Python?). The word BUT would be in the middle, with two fields/words left and two fields/words right of it. I then want to sort this list by - field 3 - field 4 - field 1 - field 0 in this hierarchy. This is the desired result: pattern , BUT it is rapid , BUT it is sea , BUT it is sodium , BUT it is reaction is BUT by the this manner BUT the dissolved The first 4 lines all could not be sorted by fields 3 4, as they are identical (it, is), so they have been sorted first by field 1 (which is also identical: ,) and then by field 0: pattern rapid sea sodium I hope I have explained this in an understandable way. It would be cool if you could show me how this can be done in Python! Regards, Rehceb -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a multidimensional array by multiple keys
Wait, I made a mistake. The correct result would be reaction is BUT by the pattern , BUT it is rapid , BUT it is sea , BUT it is sodium , BUT it is this manner BUT the dissolved because by the comes before and the dissolved after it is. Sorry for the confusion. -- http://mail.python.org/mailman/listinfo/python-list
Re: Indentation for code readability
If I wanted to mark out stack depth stuff like this in python, I'd do it with some form of stylised comment, like this: # LEVEL 0 pushMatrix(): # LEVEL 1 drawstuff() pushMatrix() # LEVEL 2 drawSomeOtherStuff() popMatrix() # LEVEL 1 popMatrix() # LEVEL 0 (there's probably a better comment form for your specific requirement). Any decent modern editor should be capable of being set up to highlight such lines in a colour/style of your choice, and you then set your eyeball filter to look for those lines when you want to be sure of where you are. jon N -- http://mail.python.org/mailman/listinfo/python-list
Opening Photoshop EPS with PIL?
Hey Everyone,
I am trying to get PIL to open some EPS files I have (Photoshop EPS,
whatever the difference is). I'm trying to use PIL to do this, but
when I run it, the following happens:
from PIL import Image, ImageOps
Image.open('/flora.eps')
Traceback (most recent call last):
File console, line 1, in ?
File /opt/local/lib/python2.4/site-packages/PIL/Image.py, line
1741, in open
return factory(fp, filename)
File /opt/local/lib/python2.4/site-packages/PIL/ImageFile.py, line
82, in __init__
self._open()
File /opt/local/lib/python2.4/site-packages/PIL/EpsImagePlugin.py,
line 206, in _open
raise IOError, bad EPS header
I've never had any real trouble with PIL before (never used it for EPS
though). Can anyone offer any advice on this one? I'd be most
grateful.
Many Thanks Everyone,
Oliver Beattie
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Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Björn Mark Dufour wrote: Shed Skin allows for translation of pure (unmodified), implicitly statically typed Python programs into optimized C++, and hence, highly optimized machine language. Bjoern Bjoern Wow, I bet all C++ compiler manufacturers would want you to work Bjoern for them. Why are you taking potshots at Mark? He's maybe onto something and he's asking for help. If he can generate efficient C++ code from implicitly statically type Python it stands to reason that he can take advantage of the compiler's optimization facilities. Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie Question (real-time communication between apps: audio, 3d, PD, Blender)
[EMAIL PROTECTED] wrote: Hi All, I'm just beginning my exploration of Python and I have a rather general question. If two particular programs have Python scripting capabilities, does that mean those two programs can communicate in real time through Python? I'm running some audio experiments (for artistic purposes) in the program Pure Data (PD). I would like to use data that I extract from audio files to affect 3-d game simulations in Blender. I don't know specifically what it is I would be manipulating -- this is an artistic project, so intend to do a lot of experimenting to see what I come up with... My question(s): Is this possible, reasonable, plausible? Plausible, with a recent PC. I use some Java code + a research TTS engine (C) + Python code + Pure Data + VirChor (3D renderer+interract, C++) in a TalkingHead project at LIMSI. All these communicate via UDP, we just tries to keep amount of transmitted data not too huge (ie. just transmit status, positions, commands...). For the realtime side capacity, it depend on the process you need in Python - if Python reveal to be too slow, you may write long computing code into a separate C module or library (may see ctypes and pyrex). Another point, if you build Python multithreading code in same process, the Global Lock may lead to unefficient use of your computing capacities. Note. You may take a look at OSC (Open Sound Control), there is a module for PD and one for Python. A+ Laurent. -- http://mail.python.org/mailman/listinfo/python-list
Re: Remote XML Parsing
[EMAIL PROTECTED] wrote: On Mar 30, 5:56 pm, Laurent Pointal [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] a écrit : How can I parse a remote XML file with Python? And what will I be able to do with this XML file in Python? Sorry if this is a noob-ish question. You can process XML data with Python as long as you can get it - you will be able to do what you want with it. How do you access your remote file ? ...more details would be welcome... Well I'll be happy to access in the way your comfortable with. Net protocols - urllib2 module Local files (or network mounted files) - open function Remote call - xmlrpc, omniORBpy, pyrpc... Once you get the XML data... sax/dom/elementtree Co (see Python docs, Dive Into Python...). -- http://mail.python.org/mailman/listinfo/python-list
saving Python process state for later debugging
Hi! Is there a way to save the state of a Python process for later inspection with a debugger? One way to do this is to dump core, but is the result usable for debugging with pdb (it can be debugged by gdb, which can inspect PyObjects in a CPython core, for example, but it's not much fun)? If there is no way to do this today, are there essential difficulties in implementing this on top of an OS support for raw core dumps? TIA, Yossi -- http://mail.python.org/mailman/listinfo/python-list
wxPython help
i have installed wxpython v2.6 for python 2.4 my python installation is at d:\python24 the statement import wx works perfectly but when i use import images, it says that there is no module, but i know for a fact that there is. can anyone help? -- - --- -- - Posted with NewsLeecher v3.8 Beta 8 Web @ http://www.newsleecher.com/?usenet --- - -- - -- http://mail.python.org/mailman/listinfo/python-list
Re: Mouse click in python
Synt4x wrote: I'm creating a webcam user interface (to control google earth through my webcam) and I still can't find a good example to how to control the mouse to click and drag (not just click and release). Pygame: http://www.pygame.org/ http://www.pygame.org/docs/ref/mouse.html provides event-control including mouse-event-control. Mainly it's intended for games, but it should work for other projects like yours too. HTH H. -- http://mail.python.org/mailman/listinfo/python-list
Re: os.system questions
Thank you :) Eric From: Parthan SR [EMAIL PROTECTED] To: Eric Price [EMAIL PROTECTED] Subject: Re: os.system questions Date: Sat, 31 Mar 2007 19:52:01 +0530 On 3/31/07, Eric Price [EMAIL PROTECTED] wrote: Oops! The problem isn't in the os.system call. It's in the fact that I don't call the function. That is, I write a script called test.py with a function in it called freshReboot. Now, how do I call that function from test.py? That is, how do I write a cron event such that freshReboot actually gets called when I run test.py? Just call the function name within the test.py itself def freshReboot(): ... ... ... ... if __name__ == '__main__': freshReboot() (or) freshReboot() Now, run test.py. If you are printing anything or having a return value, then it will be displayed in the terminal from where you call the program. If you are executing it from another script, then the return value will be returned where it is being called. -- With Regards --- Parthan.S.R. Research Assistant National Resource Center for Free/Open Source Software Python Developer n00b _ Interest Rates near 39yr lows! $430,000 Mortgage for $1,399/mo - Calculate new payment http://www.lowermybills.com/lre/index.jsp?sourceid=lmb-9632-18466moid=7581 -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython help
Blh ([EMAIL PROTECTED]) wrote: i have installed wxpython v2.6 for python 2.4 my python installation is at d:\python24 the statement import wx works perfectly but when i use import images, it says that there is no module, but i know for a fact that there is. can anyone help? -- - --- -- - Posted with NewsLeecher v3.8 Beta 8 Web @ http://www.newsleecher.com/?usenet --- - -- - Maybe this: http://mail.python.org/pipermail/python-list/2002-February/128104.html hg -- http://mail.python.org/mailman/listinfo/python-list
Re: os.system questions
From: Eric Price [EMAIL PROTECTED] Date: March 31, 2007 9:38:53 AM EDT To: [EMAIL PROTECTED], [EMAIL PROTECTED] Cc: python-list@python.org Subject: Re: os.system questions Oops! The problem isn't in the os.system call. It's in the fact that I don't call the function. That is, I write a script called test.py with a function in it called freshReboot. Now, how do I call that function from test.py? That is, how do I write a cron event such that freshReboot actually gets called when I run test.py? TIA, Eric Eric - to call a function that is located inside another module you first need to import that module into the program you are running: from test.py import * # this would import all functions from test.py from test.py import freshReboot # this will import freshReboot from test.py to call freshReboot in your program you would simply call it by it's name freshReboot ex: x = freshReboot()-- http://mail.python.org/mailman/listinfo/python-list
Re: Is any way to split zip archive to sections?
On 30/03/07, Durumdara [EMAIL PROTECTED] wrote:
Hi!
I want to create some backup archives with python (I want to write a backup
application in Python).
Some package managers (7z, arj, winzip) can create splitted archives (1
mega, 650, 700 mega, etc).
Because I want to ftp these results to a ftp server, I want to split large
volumes to 15 mb sections.
Can I do it with any python wrapper automatically (like in Cobian), or I
need to create the large volume, and next split it with another tool?
Or anybody knows about a command line tool (like 7z, or arj) that can expand
the splitted archive (and I can add files with them from Python one by one)?
If you are iterating through a list of files to be backed up, and
adding them to a ZIP one-by-one then you could use something like this
which adds each file until the zip is over 15mb - then it closes the
ZIP and creates the next one.
Not tested or optimised :)
---
import zipfile
archive_num = 1
outfile = zipfile.ZipFile('/zips/archive%s.zip' % archive_num, w)
zsize = 0
for full_name in filelist:
full_name_path = os.path.join(full_name, full_path)
if zsize 15728640 : # 15mb
outfile.close()
archive_num += 1
outfile = zipfile.ZipFile('/zips/archive%s.zip' % archive_num, w)
zsize= 0
outfile.write( full_name_path , full_name_path ,
zipfile.ZIP_DEFLATED) # add the file
zsize += outfile.getinfo(full_name_path).compress_size # get
compressed size of file
outfile.close()
--
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Re: Sorting a multidimensional array by multiple keys
Rehceb Rotkiv wrote: If you want a good answer you have to give me/us more details, and an example too. OK, here is some example data: reaction is BUT by the sodium , BUT it is sea , BUT it is this manner BUT the dissolved pattern , BUT it is rapid , BUT it is As each line consists of 5 words, I would break up the data into an array of five-field-arrays (Would you use lists or tuples or a combination in Python?). The word BUT would be in the middle, with two fields/words left and two fields/words right of it. I then want to sort this list by - field 3 - field 4 - field 1 - field 0 You're probably looking for the key= argument to list.sort(). If your function simply returns the fields in the order above, I believe you get the right thing:: s = '''\ ... reaction is BUT by the ... sodium , BUT it is ... sea , BUT it is ... this manner BUT the dissolved ... pattern , BUT it is ... rapid , BUT it is ... ''' word_lists = [line.split() for line in s.splitlines()] def key(word_list): ... return word_list[3], word_list[4], word_list[1], word_list[0] ... word_lists.sort(key=key) word_lists [['reaction', 'is', 'BUT', 'by', 'the'], ['pattern', ',', 'BUT', 'it', 'is'], ['rapid', ',', 'BUT', 'it', 'is'], ['sea', ',', 'BUT', 'it', 'is'], ['sodium', ',', 'BUT', 'it', 'is'], ['this', 'manner', 'BUT', 'the', 'dissolved']] STeVe -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a multidimensional array by multiple keys
Rehceb Rotkiv [EMAIL PROTECTED] wrote: Wait, I made a mistake. The correct result would be reaction is BUT by the pattern , BUT it is rapid , BUT it is sea , BUT it is sodium , BUT it is this manner BUT the dissolved because by the comes before and the dissolved after it is. Sorry for the confusion. data = [ reaction is BUT by the, sodium , BUT it is, sea , BUT it is, this manner BUT the dissolved, pattern , BUT it is, rapid , BUT it is, ] data = [ s.split() for s in data] from pprint import pprint pprint(data) [['reaction', 'is', 'BUT', 'by', 'the'], ['sodium', ',', 'BUT', 'it', 'is'], ['sea', ',', 'BUT', 'it', 'is'], ['this', 'manner', 'BUT', 'the', 'dissolved'], ['pattern', ',', 'BUT', 'it', 'is'], ['rapid', ',', 'BUT', 'it', 'is']] from operator import itemgetter data.sort(key=itemgetter(0)) data.sort(key=itemgetter(1)) data.sort(key=itemgetter(4)) data.sort(key=itemgetter(3)) pprint(data) [['reaction', 'is', 'BUT', 'by', 'the'], ['pattern', ',', 'BUT', 'it', 'is'], ['rapid', ',', 'BUT', 'it', 'is'], ['sea', ',', 'BUT', 'it', 'is'], ['sodium', ',', 'BUT', 'it', 'is'], ['this', 'manner', 'BUT', 'the', 'dissolved']] -- http://mail.python.org/mailman/listinfo/python-list
Re: What are OOP's Jargons and Complexities
Arved Sandstrom wrote: Timofei Shatrov [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] On Fri, 30 Mar 2007 06:48:05 GMT, Mike Schilling [EMAIL PROTECTED] tried to confuse everyone with this message: Xah Lee wrote: So, a simple code like this in normal languages: becomes in Java: Only when written by someone almost entirely ignorant of Java. Which is the state most people want to be in... Which based on what I've seen, is the state that most Java programmers are in. They'd have no idea why Mike said what he did. what EVerrr! -- Lew -- http://mail.python.org/mailman/listinfo/python-list
Re: What are OOP's Jargons and Complexities
Michele Dondi wrote: Even better: pick one entry of your choice from http://images.google.com/images?q=%22don%27t+feed+the+troll%22 I pick http://img371.imageshack.us/img371/8263/noah7ok6rh.jpg/ -- Lew -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a multidimensional array by multiple keys
On Mar 31, 6:42 am, Rehceb Rotkiv [EMAIL PROTECTED] wrote: (snipped) As each line consists of 5 words, I would break up the data into an array of five-field-arrays (Would you use lists or tuples or a combination in Python?). The word BUT would be in the middle, with two fields/words left and two fields/words right of it. I then want to sort this list by - field 3 - field 4 - field 1 - field 0 import StringIO buf = reaction is BUT by the sodium , BUT it is sea , BUT it is this manner BUT the dissolved pattern , BUT it is rapid , BUT it is .lstrip() mockfile = StringIO.StringIO(buf) tokens = [ line.split() + [ line ] for line in mockfile ] tokens.sort(key=lambda l: (l[3], l[4], l[1], l[0])) for l in tokens: print l[-1], -- Hope this helps, Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: os.system questions
In article [EMAIL PROTECTED], Eric Price [EMAIL PROTECTED] wrote: I have a couple bugs to work out in the below script; namely, I don't know how to capture the result of an os.system command, nor am I convinced that the call to os.system actually results in the execution of the command. Here is the script: Although you've already figured out the problem, I'll just make the standard recommendation for the subprocess module, assuming you have Python 2.4 or later. -- Aahz ([EMAIL PROTECTED]) * http://www.pythoncraft.com/ Need a book? Use your library! -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a multidimensional array by multiple keys
Duncan Booth wrote: from operator import itemgetter data.sort(key=itemgetter(0)) data.sort(key=itemgetter(1)) data.sort(key=itemgetter(4)) data.sort(key=itemgetter(3)) Or, in Python 2.5: data.sort(key=itemgetter(3, 4, 1, 0)) Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Long way around UnicodeDecodeError, or 'ascii' codec can't decode byte
Oleg Parashchenko wrote:
On Mar 29, 4:53 pm, Paul Boddie [EMAIL PROTECTED] wrote:
On 29 Mar, 06:26, Oleg Parashchenko [EMAIL PROTECTED] wrote:
I'm working on an unicode-aware application. I like to use print to
debug programs, but in this case it was nightmare. The most popular
result of print was:
UnicodeDecodeError: 'ascii' codec can't decode byte 0xXX in position
0: ordinal not in range(128)
I think I've found the actual source of this, and it isn't the print
statement. UnicodeDecodeError relates to the construction of Unicode
objects, not the encoding of such objects as byte strings. The
terminology is explained using this simple diagram (which hopefully
won't be ruined in transmission):
byte string in XYZ encoding
|
(decode from XYZ) -- possible UnicodeDecodeError
|
V
Unicode object
|
(encode to ABC) -- possible UnicodeEncodeError
|
V
byte string in ABC encoding
What does sys.stdout.encoding say?
'KOI8-R'
[...]
What do you get if you do this...?
import locale
locale.setlocale(locale.LC_ALL, )
print locale.getlocale()
('ru_RU', 'koi8-r')
What is your terminal encoding?
koi8-r
Here's a transcript on my system answering the same questions:
Python 2.4.1 (#2, Oct 4 2006, 16:53:35)
[GCC 3.3.5 (Debian 1:3.3.5-8ubuntu2.1)] on linux2
Type help, copyright, credits or license for more
information.
import locale
locale.getlocale()
(None, None)
locale.setlocale(locale.LC_ALL, )
'en_US.ISO-8859-15'
locale.getlocale()
('en_US', 'iso-8859-15')
So Python knows about the locale. Note that neither of us use UTF-8 as
a system encoding.
import sys
sys.stdout.encoding
'ISO-8859-15'
sys.stdin.encoding
'ISO-8859-15'
This tells us that Python could know things about writing Unicode
objects out in the appropriate encoding. I wasn't sure whether Python
was so smart about this, so let's see what happens...
print unicode(æøå)
Traceback (most recent call last):
File stdin, line 1, in ?
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position
0: ordinal not in range(128)
Now this isn't anything to do with the print operation: what's
happening here is that I'm explicitly making a Unicode object but
haven't said what the encoding of my byte string is. The default
encoding is 'ascii' as stated in the error message. None of the
characters provided belong to the ASCII character set.
We can check this by not printing anything out:
s = unicode(æøå)
Traceback (most recent call last):
File stdin, line 1, in ?
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe6 in position
0: ordinal not in range(128)
So, let's try again and provide an encoding...
print unicode(æøå, sys.stdin.encoding)
æøå
Here, we've mentioned the encoding and even though the print statement
is acting on a Unicode object, it seems to be happy to work out the
resulting encoding.
print uæøå
æøå
Here, we've skipped the explicit Unicode object construction by using
a Unicode literal, which works in this simple case.
Of course, if your system encoding (along with the terminal) isn't
capable of displaying every Unicode character, you'll experience
problems doing the above. Frequently, it's interesting to encode
things as UTF-8 and look at them in applications that are capable of
displaying the text. Thus, you'd do something like this:
import unicodedata
(This gets an interesting function to help us look up characters in
the Unicode database.)
somefile = open(somefile.txt, wb)
print somefile, unicodedata.lookup(MONGOLIAN VOWEL
SEPARATOR).encode(utf-8)
Or even this:
import codecs
somefile = codecs.open(somefile.txt, wb, encoding=utf-8)
print somefile, unicodedata.lookup(MONGOLIAN VOWEL SEPARATOR)
Here, we only specified the encoding once when opening the file. The
file object accepts Unicode objects thereafter.
Usually, if I'm wanting to print Unicode objects, I explicitly encode
them into something I know the terminal will support. The codecs
module can help with writing Unicode to streams in different
encodings, too.
As long as input/output is the only place for such need, it's ok to
encode expliciyely. But I also had problems, for example, with md5
module, and I don't know the whole list of potential problematic
places. Therefore, I'd better go with my brutal utf8ization.
It's best to decode (ie. construct Unicode objects) upon receiving
data as input, and to encode (ie. convert Unicode objects to byte
strings) upon producing output. What may be the problem with the md5
module, and you'd have to post example code for us to help you out, is
that it assumes byte strings and doesn't work properly with Unicode
objects, but I can't say for sure because I'm usually presenting byte
strings to md5 module functions on the rare occasions I do anything
with them. Note that one would usually calculate MD5 checksums on raw
data,
Re: When will 2.5.1 be released?
And while we're waiting for 2.5.1, can somebody post a clear (as opposed to the one that comes with Tix ;)) explanation of how to manually install Tix into python 2.5? It should be possible... LLoyd -Not possible - this is a known bug and won't be fixed until 2.5.1 This is not true. Copying the tix files into the Python installation will work just fine. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a multidimensional array by multiple keys
Thank you all for your helpful solutions! Regards, Rehceb -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie Question (real-time communication between apps: audio, 3d, PD, Blender)
Thank you, everyone! On Mar 31, 6:43 am, Laurent Pointal [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: Hi All, I'm just beginning my exploration of Python and I have a rather general question. If two particular programs have Python scripting capabilities, does that mean those two programs can communicate in real time through Python? I'm running some audio experiments (for artistic purposes) in the program Pure Data (PD). I would like to use data that I extract from audio files to affect 3-d game simulations in Blender. I don't know specifically what it is I would be manipulating -- this is an artistic project, so intend to do a lot of experimenting to see what I come up with... My question(s): Is this possible, reasonable, plausible? Plausible, with a recent PC. I use some Java code + a research TTS engine (C) + Python code + Pure Data + VirChor (3D renderer+interract, C++) in a TalkingHead project at LIMSI. All these communicate via UDP, we just tries to keep amount of transmitted data not too huge (ie. just transmit status, positions, commands...). For the realtime side capacity, it depend on the process you need in Python - if Python reveal to be too slow, you may write long computing code into a separate C module or library (may see ctypes and pyrex). Another point, if you build Python multithreading code in same process, the Global Lock may lead to unefficient use of your computing capacities. Note. You may take a look at OSC (Open Sound Control), there is a module for PD and one for Python. A+ Laurent. -- http://mail.python.org/mailman/listinfo/python-list
Re: What are OOP's Jargons and Complexities
Even better: pick one entry of your choice from http://images.google.com/images?q=%22don%27t+feed+the+troll%22 Michele OMG and here I am thinking that Ken Rockwell's site is full of crap. This one's worse... Does the guy have a job? Or a life? -- http://mail.python.org/mailman/listinfo/python-list
Extending embedded python of multiple interpreters
Hello All,
I have embedded python 2.5 in to my C application. As we need the
python scripts to run in multi threaded environment I have used
Py_NewInterpreter() and Py_EndInterpreter each time I execute a run
script function.
The code is as follows:
RunScript(char *pScriptName,char *pFuncName,...)
{
PyEval_AcquireLock()
threadState = Py_NewInterpreter();
PyThreadState_Swap(threadState);
/* Import the script module and run the fnc in that script module */
Pyobject *pModule = PyImport_Import(pScriptName);
PyObject *pFunc = PyObject_GetAttrString(pModule, pFuncName);
/* End running the script and calling the script fnc */
Py_EndInterpreter(threadState);
PyEval_ReleaseLock();
}.
And my python initialise looks as :
pythonInit() {
Py_initialise();
PyEval_initThreads();//which enables multi thread support
}
Now I am extending the embedded python to expose my application
library API's to python using SWIG. I written one extension module and
from python i am setting the C structure member values which i
wrapped. I execute this python code using call to RunScript (above
function), it works fine for the first time, but from second time
onwards I get an error - Type Error : in method
structurename_member_set.
Hence my question is the same python code worked for first call, but
from 2nd call it is not working. Could any body help me where I am
making mistake.
Is extension modules does not work properly with multiple
interpreters? Does any body had this behaviour when worked with
extension modules and multiple interpreters creation for each thread.
Thanks in Advance for the help.
Vishnu
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Re: Game programming for kids: looking for open source 2D game development kit
I 'm doing the same in forth... www.reda4.org -- http://mail.python.org/mailman/listinfo/python-list
Re: Sorting a multidimensional array by multiple keys
Peter Otten [EMAIL PROTECTED] wrote: Duncan Booth wrote: from operator import itemgetter data.sort(key=itemgetter(0)) data.sort(key=itemgetter(1)) data.sort(key=itemgetter(4)) data.sort(key=itemgetter(3)) Or, in Python 2.5: data.sort(key=itemgetter(3, 4, 1, 0)) Thanks, I'd forgotten itemgetter had that strangley assymmetric behaviour of returning either a single value or a tuple. -- http://mail.python.org/mailman/listinfo/python-list
Re: PyPy for dummies
Cameron Laird schrieb: In article [EMAIL PROTECTED], Paddy [EMAIL PROTECTED] wrote: . . . It is also European funding for an open source project with sprints. I'm sure some eurocrat will be dissecting the project to see if it is aa good way to fund technical projects. - Paddy. PyPy-ers, what *are* the prospects in this direction? Are there write-ups planned that'll be of interest to computing people? There is already a whole bunch of reports for the EU at http://codespeak.net/pypy/extradoc/eu-report/ HTH, Georg -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
[EMAIL PROTECTED] wrote: Why are you taking potshots at Mark? What suggests that I'm taking potshots at Mark? He's maybe onto something and he's asking for help. If he can generate efficient C++ code from implicitly statically type Python it stands to reason that he can take advantage of the compiler's optimization facilities. Yes, compilers do output optimized machine code. But generally calling that code highly optimized is, IMHO, exaggeration. Regards, Björn -- BOFH excuse #426: internet is needed to catch the etherbunny -- http://mail.python.org/mailman/listinfo/python-list
help with dates
I'm working on a website for some firefighters that want to be able to sign-up for overtime and I need some help figuring out a date related problem. Here's the scenario: Four groups of firefighters (group1, group2, group3, group4). Each group works a 24 hr shift. So group1 works April 1, group2 works April 2, group3 works April 3, group4 works April 4, group 1 works April 5, etc. It just keeps rolling like this forever into next year, etc. I need to come up with a methodology for the following: -- http://mail.python.org/mailman/listinfo/python-list
help with dates
[sorry about the earlier post. accidently hit enter] I'm working on a website for some firefighters that want to be able to sign-up for overtime and I need some help figuring out a date related problem. Here's the scenario: Four groups of firefighters (group1, group2, group3, group4). Each group works a 24 hr shift. So group1 works April 1, group2 works April 2, group3 works April 3, group4 works April 4, group 1 works April 5, etc. It just keeps rolling like this forever into next year, etc. I need to come up with a methodology for the following: If given a date, find out what group is working on that date. Has anyone dealt with a problem like this before? Obviously I'll need to have a starting date where group1 is associated with a starting date. Fortunately there are no surprises. Groups work in order (1,2,3,4,1,2,3,4,1,2,...) and dates go in order and there are absolutely no special exceptions for holidays and anything else. Thanks in advance for any clues. Kevin -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
On Mar 31, 8:38 am, Bjoern Schliessmann usenet- [EMAIL PROTECTED] wrote: Mark Dufour wrote: Shed Skin allows for translation of pure (unmodified), implicitly statically typed Python programs into optimized C++, and hence, ^ highly optimized machine language. Wow, I bet all C++ compiler manufacturers would want you to work for them. Regards, Björn -- BOFH excuse #23: improperly oriented keyboard Mark has been doing an heroic job so far. Shedskin is an impressive piece of software and, if pypy hadn't been started some time ago, it should have gotten more attention from the community. I think he should be taken very seriously. He is the first programmer I know who actually released working code(and a lot of it) of a project that actually manages to speed up python by a large margin, by means of advanced type inference techniques. Other people, in the past, have attended conferences and made spectacular announcements of projects that could speed up python by 60x or more, but never ever released any code. Mark has been working quietly for a long time, and his works deserves a lot of credit (and hopefully, some help). -- http://mail.python.org/mailman/listinfo/python-list
Re: help with dates
Four groups of firefighters (group1, group2, group3, group4). Each group works a 24 hr shift. So group1 works April 1, group2 works April 2, group3 works April 3, group4 works April 4, group 1 works April 5, etc. It just keeps rolling like this forever into next year, etc. I need to come up with a methodology for the following: If given a date, find out what group is working on that date. Hello, You can use method datetime.date.toordinal() : from datetime import date start = date(2007,4,1) # Arpil 1, 2007 def group(_date): return (date.toordinal(_date)-date.toordinal(start)) % 4 print group(date(2007,4,15)) Regards, Pierre -- http://mail.python.org/mailman/listinfo/python-list
I18n issue with optik
Hi, I've written a script which uses Optik/Optparse to display the options (which works fine). The text for the help message is localised (with german umlauts) and when I execute the script with the localised environment variable set, I get this traceback[1]. The interesting thing is that the localised optparse messages from displays fine - it's only my localisation that errors. From my understanding, my script doesn't put out anything, it's optik/optparse who does that. My po file is directly copied from the optik po file (who displays fine) and modified so the po file should be fine, too. What can I do to troubleshoot whether the culprit is my script, optik or gettext? Would it make sense to post the script and the mo or po files? Thorsten [1] Traceback (most recent call last): File script.py, line 37, in module options, args = cmdlineparser.parse_args() File /usr/lib/python2.5/optparse.py, line 1378, in parse_args stop = self._process_args(largs, rargs, values) File /usr/lib/python2.5/optparse.py, line 1418, in _process_args self._process_long_opt(rargs, values) File /usr/lib/python2.5/optparse.py, line 1493, in _process_long_opt option.process(opt, value, values, self) File /usr/lib/python2.5/optparse.py, line 782, in process self.action, self.dest, opt, value, values, parser) File /usr/lib/python2.5/optparse.py, line 804, in take_action parser.print_help() File /usr/lib/python2.5/optparse.py, line 1648, in print_help file.write(self.format_help().encode(encoding, replace)) UnicodeDecodeError: 'ascii' codec can't decode byte 0xc4 in position 264: ordinal not in range(128) -- http://mail.python.org/mailman/listinfo/python-list
shelf membership
can you shelve objects with membership? this gives you: TypeError: object does not support item assignment dict 0 True Exception exceptions.TypeError: 'object does not support item assignment' in ignored ignored is a bit mysterious. tx in advance. from shelve import * class MyShelf(DbfilenameShelf): def __init__(self, filename, flag='c', protocol=None, writeback=False, binary=None): self.__dict__['ready']=False DbfilenameShelf.__init__(self, filename, flag, protocol, writeback, binary) self.ready=True def __setattr__(self,name,value): if not self.ready: self.__dict__[name]=value else: print name, value, self.ready self.__dict__[name]=value DbfilenameShelf.__setitem__(self,name,value) def open(filename, flag='c', protocol=None, writeback=False, binary=None): return MyShelf(filename, flag, protocol, writeback, binary) -- http://mail.python.org/mailman/listinfo/python-list
Using Simple MAPI with MS Outlook 2007
Hi there, I'd like to send emails from a Python program using Simple MAPI. I've tried this code: http://mail.python.org/pipermail/python-list/2004-December/298066.html and it works well with Outlook Express 6 and Thunderbird 1.5, but it doens't work at all with Microsoft Outlook 2007. I keep getting this message: WindowsError: MAPI error 2. I don't want to use Extended MAPI because it doesn't support thunderbird not OE. Therefore, Simple MAPI is the only option for me. So, what did I miss here? -- http://mail.python.org/mailman/listinfo/python-list
Re: saving Python process state for later debugging
On 31 mar, 16:48, [EMAIL PROTECTED] wrote: Hi! Is there a way to save the state of a Python process for later inspection with a debugger? One way to do this is to dump core, but is the result usable for debugging with pdb (it can be debugged by gdb, which can inspect PyObjects in a CPython core, for example, but it's not much fun)? If there is no way to do this today, are there essential difficulties in implementing this on top of an OS support for raw core dumps? Pylon has something like that. http://pylonshq.com/docs/0.9.4.1/interactive_debugger.html Turbogears has the same with option tg.fancy_exception You can navigate into the stack trace from the web interface :-) TIA, Yossi -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Luis M. González [EMAIL PROTECTED] writes: On Mar 31, 8:38 am, Bjoern Schliessmann usenet- [EMAIL PROTECTED] wrote: Mark Dufour wrote: Shed Skin allows for translation of pure (unmodified), implicitly statically typed Python programs into optimized C++, and hence, ^ highly optimized machine language. Wow, I bet all C++ compiler manufacturers would want you to work for them. Regards, Björn -- BOFH excuse #23: improperly oriented keyboard Mark has been doing an heroic job so far. Shedskin is an impressive piece of software and, if pypy hadn't been started some time ago, it should have gotten more attention from the community. Regardless of its merrits, it's GPL'ed which I assume is an immediate turn-off for many in the community. 'as -- http://mail.python.org/mailman/listinfo/python-list
Re: help with dates
On Apr 1, 7:51 am, Pierre Quentel [EMAIL PROTECTED] wrote: Four groups of firefighters (group1, group2, group3, group4). Each group works a 24 hr shift. So group1 works April 1, group2 works April 2, group3 works April 3, group4 works April 4, group 1 works April 5, etc. It just keeps rolling like this forever into next year, etc. I need to come up with a methodology for the following: If given a date, find out what group is working on that date. Hello, You can use method datetime.date.toordinal() : from datetime import date start = date(2007,4,1) # Arpil 1, 2007 def group(_date): return (date.toordinal(_date)-date.toordinal(start)) % 4 ... whose possible outcomes are (0, 1, 2, 3) whereas the groups are numbered 1 to 4. However I'm sure the OP can make the necessary adjustment :-) print group(date(2007,4,15)) Regards, Pierre -- http://mail.python.org/mailman/listinfo/python-list
Re: shelf membership
On Apr 1, 8:02 am, Aaron Brady [EMAIL PROTECTED] wrote: can you shelve objects with membership? this gives you: TypeError: object does not support item assignment dict 0 True Exception exceptions.TypeError: 'object does not support item assignment' in ignored ignored is a bit mysterious. tx in advance. from shelve import * class MyShelf(DbfilenameShelf): def __init__(self, filename, flag='c', protocol=None, writeback=False, binary=None): self.__dict__['ready']=False DbfilenameShelf.__init__(self, filename, flag, protocol, writeback, binary) self.ready=True def __setattr__(self,name,value): if not self.ready: self.__dict__[name]=value else: print name, value, self.ready self.__dict__[name]=value DbfilenameShelf.__setitem__(self,name,value) def open(filename, flag='c', protocol=None, writeback=False, binary=None): return MyShelf(filename, flag, protocol, writeback, binary) Please supply the *full* traceback, using copy/paste. -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Alexander Schmolck wrote: Regardless of its merrits, it's GPL'ed which I assume is an immediate turn-off for many in the community. In the way that tools such as gcc are GPL-licensed, or do you have something else in mind? Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
On Mar 31, 6:45 pm, Alexander Schmolck [EMAIL PROTECTED] wrote: Regardless of its merrits, it's GPL'ed which I assume is an immediate turn-off for many in the community. Why would that be? GPL'ed code libraries can be a turn-off for those who want to release commercial products using them, but a GPL'ed utility such as a compiler bears no relationship or encumbrance on the compiled object code it generates. -- Paul -- http://mail.python.org/mailman/listinfo/python-list
Unicode list
Hello, I have this little grep-like program: ++snip++ #!/usr/bin/python import sys import re pattern = sys.argv[1] inputfile = file(sys.argv[2], 'r') for line in inputfile: matches = re.findall(pattern, line) if matches: print matches ++snip++ Like this, the program prints some characters as strange escape sequences, which is due to the input file being encoded in utf-8: When I convert re.findall... to a string and wrap an unicode() around it, the matches get printed correctly. Is it possible to make matches unicode without saving it as a single string first? The function unicode () seems only to work for strings. Or is there a general way of telling Python to abandon the ancient and evil land of iso-8859 for good and use utf-8 only? Regards, Rehceb -- http://mail.python.org/mailman/listinfo/python-list
Re: Unicode list
Rehceb Rotkiv wrote: Hello, I have this little grep-like program: ++snip++ #!/usr/bin/python import sys import re pattern = sys.argv[1] inputfile = file(sys.argv[2], 'r') for line in inputfile: matches = re.findall(pattern, line) if matches: print matches ++snip++ Like this, the program prints some characters as strange escape sequences, which is due to the input file being encoded in utf-8: So the UTF-8 data gets printed to your terminal which isn't configured for UTF-8, right? When I convert re.findall... to a string and wrap an unicode() around it, the matches get printed correctly. How do you meaningfully convert it to a string? The matches variable refers to a list, but you surely don't want to be dealing with the list's string representation. Is it possible to make matches unicode without saving it as a single string first? Why not convert your input into Unicode and then, for the benefit of certain kinds of character classes, use re.findall in Unicode mode (by specifying re.U as a flag)? Then, each match will be produced as a Unicode object. The function unicode() seems only to work for strings. Or is there a general way of telling Python to abandon the ancient and evil land of iso-8859 for good and use utf-8 only? The only refuge from ancient and evil lands is found by climbing the mountain of Unicode: convert from encoded text as soon as you can, work only with Unicode objects, produce encoded text only when necessary. Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Paul McGuire [EMAIL PROTECTED] writes: Why would that be? GPL'ed code libraries can be a turn-off for those who want to release commercial products using them, but a GPL'ed utility such as a compiler bears no relationship or encumbrance on the compiled object code it generates. For some of us, doing volunteer work on non-GPL projects is a turn-off. I don't mind writing code that goes into proprietary products, but I expect to get paid for it just like the vendors of the products expect to get paid. If I'm working for free I expect the code to stay free. This is why I don't contribute code to Python on any scale. -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Luis M. González wrote: I think he should be taken very seriously. Agreed. Okay, it seems focusing a discussion on one single point is difficult for many people. Next time I'll be mind-bogglingly clear that even the last one understands after reading it one time ... Regards, Björn Fup2 p -- BOFH excuse #46: waste water tank overflowed onto computer -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
On Mar 31, 10:31 pm, Bjoern Schliessmann usenet- [EMAIL PROTECTED] wrote: Luis M. González wrote: I think he should be taken very seriously. Agreed. Okay, it seems focusing a discussion on one single point is difficult for many people. Next time I'll be mind-bogglingly clear that even the last one understands after reading it one time ... Regards, Björn Fup2 p -- BOFH excuse #46: waste water tank overflowed onto computer Bjoern, I understood what you said. It's just that it seemed that you were mocking at the poster's message. I apologize if that wasn't your intention. Luis -- http://mail.python.org/mailman/listinfo/python-list
Re: I18n issue with optik
Thorsten Kampe wrote: I've written a script which uses Optik/Optparse to display the options (which works fine). The text for the help message is localised (with german umlauts) and when I execute the script with the localised environment variable set, I get this traceback[1]. The interesting thing is that the localised optparse messages from displays fine - it's only my localisation that errors. From my understanding, my script doesn't put out anything, it's optik/optparse who does that. My po file is directly copied from the optik po file (who displays fine) and modified so the po file should be fine, too. What can I do to troubleshoot whether the culprit is my script, optik or gettext? Would it make sense to post the script and the mo or po files? Yes, probably. Though if you can reduce it to the simplest test case that produces the error, it'll increase your chances of having someone look at it. You could also try posting to the optik list: http://lists.sourceforge.net/lists/listinfo/optik-users STeVe -- http://mail.python.org/mailman/listinfo/python-list
CRC CCITT UPDATE in Python
Please,
Please, is there here some good soul that understand this
functions hi8 and lo8 (from GCC AVR) and can help me to port it to
Python?
uint16_t
crc_ccitt_update (uint16_t crc, uint8_t data)
{
data ˆ= lo8 (crc);
data ˆ= data 4;
return uint16_t)data 8) | hi8 (crc)) ˆ (uint8_t)(data 4)
ˆ ((uint16_t)data 3));
}
Source:
http://tldp.tuxhilfe.de/linuxfocus/common/src2/article352/avr-libc-user-manual-1.0.4.pdf
Reason, I would like to code in Python one simulator from one
code C++ AVR
Thanks.,
./Fã -Py -Thorneiro
--
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Pygame Q (linux) beginner
Running 2.4.1 Python (learning) Running SUSE Linux 10 Am learning from a new books that mostly deals with windows python and Pygames called Game Programming by Randy Harris (2007) His books references Python 2.4.2 and Pygame 1.7.1 with these comments: If you are using a Linux machine, you probably won't have the simple installer that came with the windows version. Follow the instructions at http://pygame.org/install. You may have to run a couple of scripts to make everything work, but just follow the directions and you will be fine. Could anybody suggest or make a helpful comment in view of what information I have supplied. At Chapter 5 is where the Pygame module is introduced so I have a little time before I have to figure out what I have to download and install. Thanks very much in advance for any direction. Terry -- http://mail.python.org/mailman/listinfo/python-list
re.findall() hangs in python
Hi, I have the following regular expression. It works when 'data' contains the pattern and I see 'match2' get print out. But when 'data' does not contain pattern, it just hangs at 're.findall' pattern = re.compile((.*)img (.*?) src=\(.*?)img(.*?)\(.*?), re.S) print before find all match = re.findall(pattern, data) if (match): print match2 Can you please tell me why it that? -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
On Sun, 2007-04-01 at 02:49 +, Dennis Lee Bieber wrote: Take that up with ACT... GNAT 3.15p was explicitly unencumbered, but the current version of GNAT, in the GPL (no-service contract) form has gone the other direction, claiming that executables must be released GPL. The no-service contract version of the GPL is not the same as the standard GPLv2. Ordinarily the GPLv2 does not apply to the output of the program unless the license specifies that it does (a modification or addendum). Thus the output of a program is not part of the GPL usually, unless specified MySQL's take on the GPLv2 without an addendum is mistaken, in my opinion. However, copyright law probably still applies to the programs output regardless of license, but in what way I don't think the courts have ever specified, given that the output depends largely on the input. GCC, Bison, and Flex, all explicitly state that the output of the program is not under any license, and is your own property. Perhaps the author of Shed Skin could make a note in the license file to clarify the state of the output of his program. There should be no problem with this Shed Skin program being under the GPL and using it with python scripts that are not under the GPL. But if you have any concern with a copyright license at all, you should consult your lawyer. Too many companies see GPL'd programs as a free ride, not willing to accept that they need a copyright license to use the code just as they would with any code from any source. It's sad to see because free software gets an unfair bad rap because of the greed of others. On the other hand, others take an overly paranoid view of the GPL and pretend it is viral and somehow magically infects your code with the GPL license, which is false--if you use GPL'd code in your non GPL'd application then you are in a copyright violation situation and your only options are to either GPL your code or remove the offending GPL'd source from your code and write your own dang code, thank you very much. -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Michael Torrie [EMAIL PROTECTED] writes: The no-service contract version of the GPL is not the same as the standard GPLv2. I don't see how that can be--we're talking about a GCC-based compiler, right? -- http://mail.python.org/mailman/listinfo/python-list
Generic logic/conditional class or library for classification of data
This topic is difficult to describe in one subject sentence...
Has anyone come across the application of the simple statement if
(object1's attributes meet some conditions) then (set object2's
attributes to certain outcomes), where object1 and object2 are
generic objects, and the conditions and outcomes are dynamic run-
time inputs? Typically, logic code for any application out there is
hard-coded. I have been working with Python for a year, and its
flexibility is nothing short of amazing. Wouldn't it be possible to
have a class or library that can do this sort of dynamic logic?
The main application of such code would be for classification
algorithms which, based on the attributes of a given object, can
classify the object into a scheme. In general, conditions for
classification can be complex, sometimes involving a collection of
and, or, not clauses. The simplest outcome would involve simply
setting a few attributes of the output object to given values if the
input condition is met. So each such if-then clause can be viewed as
a rule that is custom-defined at runtime.
As a very basic example, consider a set of uncategorized objects that
have text descriptions associated with them. The objects are some type
of tangible product, e.g., books. So the input object has a
Description attribute, and the output object (a categorized book)
would have some attributes like Discipline, Target audience, etc.
Let's say that one such rule is if ( 'description' contains
'algebra') then ('discipline' = 'math', 'target' = 'student') . Keep
in mind that all these attribute names and their values are not known
at design time.
Is there one obvious way to do this in Python?
Perhaps this is more along the lines of data mining methods?
Is there a library with this sort of functionality out there already?
Any help will be appreciated.
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Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
On Sat, 2007-03-31 at 20:47 -0700, Paul Rubin wrote: Michael Torrie [EMAIL PROTECTED] writes: The no-service contract version of the GPL is not the same as the standard GPLv2. I don't see how that can be--we're talking about a GCC-based compiler, right? Well, that's beside the point anyway. The output of a program is beyond the scope of the source code license for the program. However the default is for the output to be copyrighted the author. Thus the author of a program is free to say (give license, in other words) that the output of a program can distributed. The real point is the Shed Skin author can both license the program under the GPLv2 and also say that the output from his program is not bound by any license. There's no conflict unless the author of Shed Skin wants there to be. Worst case, if indeed the GPLv2 says it covers the output of the program (which I don't believe it does), copyright law still trumps everything and the author is free at add an exemption to the license if he chooses, which is what I've seen done with Bison. Bison is also a special case because the output of bison contains code fragments that are part of the bison source code itself, which is under the GPL. Thus a special exception had to be made in this case. Anyway, the only real point is that if there is a concern about the copyright and licensing of the output of Shed Skin, then we merely need to ask the author of it to clarify matters and move on with life. With the exception of GNAT, to date no GPL'd compiler has ever placed a GPL restriction on its output. Whether this is explicit or implicit doesn't matter, so long as it's there. -- http://mail.python.org/mailman/listinfo/python-list
Converting _node* to a Code object?
Hi All, I have an application with an embedded python interpreter and i need to get the embedded interpreter to import strangely named files as python modules. Anyhow the simple part of the question is: How do i convert a _node* object returned from: PyParser_SimpleParseStringFlagsFilename() into a code object i can use as a module to import with: PyImport_ExecCodeModule() I cant seem to find any documentation about this. If you are wondering why i want to do this, then you can read on and maybe there is a much better way to achieve what i am after. Thanks, Brendon - What i am trying to achieve - Basically i want to import using the python C API a module from various files which may have names that do not make valid python module names. In particular i have an embedded python interpreter that is used to apply a number of operations on some data based on a user supplied suppressions file (*.eds). This .eds file is just a python source file designed only to be used from within this application. Now the names of these suppression files usually matche that of a library or application to which they will apply to. For example: libstdc++.so.6.0.5 : has eds file: libstdc++.so.6.0.5.eds Now i want to have my code import this eds file as a python module so that i can then use it as any other standard python module. So i need to separate the name of the module from the name of the file. I was thinking for example for the above filename i would give it a module name like: libstdc___so_6_0_5 (The name is not important just that the above one is a valid module name from what i understand and it is based on the original name) So i have some random file: /foo/bar/lib/libstdc++.so.6.0.5.eds and i want to be able to import that as a module using the Python C API so native python code can access the module like: libstdc___so_6_0_5.PostCalculation() If you have any better method of doing this, i would love to know what it is. Thanks in advance for any help, Brendon. -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
On Sat, 2007-03-31 at 20:47 -0700, Paul Rubin wrote: Michael Torrie [EMAIL PROTECTED] writes: The no-service contract version of the GPL is not the same as the standard GPLv2. I don't see how that can be--we're talking about a GCC-based compiler, right? I found the real reason why the GPL'd GNAT compiler's produced executables are required to be GPL'd, and it has nothing to do with the license of the compiler: What is the license of the GNAT GPL Edition? Everything (tools, runtime, libraries) in the GNAT GPL Edition is licensed under the General Public License (GPL). This ensures that executables generated by the GNAT GPL Edition are Free Software and that source code is made available with the executables, giving the freedom to recepients to run, study, modify, adapt, and redistribute sources and execuatbles under the terms of the GPL.[1] Note that it says the runtime *and* the libraries are GPL. Thus the linking clause in the GPL requires that programs that link against them (the executable in other words) must be GPL'd. Note that GLibC, while being GPL, has an exception clause in it, allowing linking to it by code of any license. Hence it's a red herring as far as the discussion and Shed Skin is concerned, although the licensing of any Shed Skin runtime libraries should be a concern to folks. [1] https://libre.adacore.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Shed Skin Python-to-C++ Compiler 0.0.21, Help needed
Mark Dufour wrote: Hi all, I have recently released version 0.0.20 and 0.0.21 of Shed Skin, an optimizing Python-to-C++ compiler. Shed Skin allows for translation of pure (unmodified), implicitly statically typed Python programs into optimized C++, and hence, highly optimized machine language. Besides many bug fixes and optimizations, these releases add the following changes: I'm also hoping someone else would like to deal with integration with CPython (so Shed Skin can generate extension modules, and it becomes easier to use 'arbitrary' external CPython modules such as 're' and 'pygame'.) Reusing precompiled external modules will be tough. Even CPython has trouble with that. But that's just a conversion problem. Maybe SWIG (yuck, but it exists) could be persuaded to cooperate. For regular expressions, here's an implementation, in C++, of Python-like regular expressions. http://linuxgazette.net/issue27/mueller.html That might be a way to get a regular expression capability into Shed Skin quickly. Finally, there may be some interesting Master's thesis subjects in improving Shed Skin, such as transforming heap allocation into stack- and static preallocation, where possible, to bring performance even closer to manual C++. Please let me know if you are interested in helping out, and/or join the Shed Skin mailing list. Find out where the time is going before spending it on that. A good test: BeautifulSoup. Many people use it for parsing web pages, and it's seriously compute-bound. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Re: CRC CCITT UPDATE in Python
Please, is there here some good soul that understand this
functions hi8 and lo8 (from GCC AVR) and can help me to port it to
Python?
uint16_t
crc_ccitt_update (uint16_t crc, uint8_t data)
{
data ˆ= lo8 (crc);
data ˆ= data 4;
return uint16_t)data 8) | hi8 (crc)) ˆ (uint8_t)(data 4)
ˆ ((uint16_t)data 3));
}
Most likely, lo8(crc) == crc 0xFF, and hi8(crc) == (crc 8) 0xFF
(the last bit masking might be redundant, as crc should not occupy more
than 16 bits, anyway).
HTH,
Martin
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Re: Unicode list
Like this, the program prints some characters as strange escape sequences, which is due to the input file being encoded in utf-8: When I convert re.findall... to a string and wrap an unicode() around it, the matches get printed correctly. Is it possible to make matches unicode without saving it as a single string first? The function unicode () seems only to work for strings. Or is there a general way of telling Python to abandon the ancient and evil land of iso-8859 for good and use utf-8 only? Python does not live in the ancient and evi land of iso-8859; it lives in the ancient and evil land of ASCII. When printing a list, the individual elements are converted with repr(), not with str(). For a string object, repr() adds escape codes for all bytes that are not printable ASCII characters. To avoid this call to repr, you need to iterate over the list yourself, and print it: if matches: for m in matches: print m, print HTH, Martin -- http://mail.python.org/mailman/listinfo/python-list
[ python-Bugs-1689458 ] pdb unable to jump to first statement
Bugs item #1689458, was opened at 2007-03-27 17:07
Message generated for change (Comment added) made by rockyb
You can respond by visiting:
https://sourceforge.net/tracker/?func=detailatid=105470aid=1689458group_id=5470
Please note that this message will contain a full copy of the comment thread,
including the initial issue submission, for this request,
not just the latest update.
Category: Extension Modules
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: gotgenes (gotgenes)
Assigned to: Nobody/Anonymous (nobody)
Summary: pdb unable to jump to first statement
Initial Comment:
The Python debugger is unable to jump back to the first executable statement
in a frame once that statement has been executed. For example:
[EMAIL PROTECTED]:~/development/playground$ python -m pdb simple.py
/home/chris/development/playground/simple.py(3)?()
- a = 1
(Pdb) next
/home/chris/development/playground/simple.py(4)?()
- b = 2
(Pdb) jump 3
/home/chris/development/playground/simple.py(3)?()
- a = 1
(Pdb) list
1 #!/usr/bin/env python
2
3 a = 1
4 - b = 2
5
6 c = a + b
7
8 print c
[EOF]
(Pdb) next
/home/chris/development/playground/simple.py(6)?()
- c = a + b
One can see that after supposedly jumping to line 3 at the second command,
when listing the line, the debugger is actually at line 4. The next command
further demonstrates this since it re-executes line 4 and moves to line 6.
This issue was raised on comp.lang.python. (For example, see
http://groups.google.com/group/comp.lang.python/browse_thread/thread/7960201616873f41/e9623c08e3618051
or if that link is munged, refer to
http://tinyurl.com/324feu
Duncan Booth offers the following:
[quote]
I verified (with a print statement in pdb) that assigning to
self.curframe.f_lineno sets self.curframe.f_lineno and sel.curframe.f_lasti
incorrectly
...
The problem looks to be in frameobject.c:
addr = 0;
line = f-f_code-co_firstlineno;
new_lasti = -1;
for (offset = 0; offset lnotab_len; offset += 2) {
addr += lnotab[offset];
line += lnotab[offset+1];
if (line = new_lineno) {
new_lasti = addr;
new_lineno = line;
break;
}
}
The first bytes in lnotab are the length and line increment for line 3 (i.e. 6,
1). If line==f-f_code-co_firstlineno it should set new_lasti=0,
new_lineno=line but the loop still executes once which increments new_lasti and
new_lineno to the next line (6, 4).
[/quote]
And Rocky Bernstein offers the following:
[quote]
Best as I can tell, it looks like a bug in Python. pdb, pydb, rpdb2 all handle
the jump command by changing the frame f_lineno value. When the corresponding
code pointer has offset 0 (or equivalently and more simlply as you put it, is
the first statement) this doesn't seem to work properly.
[/quote]
--
Comment By: Rocky Bernstein (rockyb)
Date: 2007-03-31 06:32
Message:
Logged In: YES
user_id=158581
Originator: NO
Although a single file unit test would be nice, below is a short simple
program that I think clearly shows the bug. Alas, as a follow-up comment I
don't see a way to attach files so I have to paste it inline. However with
this example and the information from Duncan Booth, I think the problem and
how to fix it is pretty clear.
file: jumpbug.py
#!/usr/bin/env python
import inspect, linecache, sys
def tracer(frame, event, arg):
global z
(filename, line_no) = inspect.getframeinfo(frame)[0:2]
print Event %s at line %d: % (event, line_no)
print \t, linecache.getline(filename, line_no),
print --
try:
if z == 0:
if line_no == 4:
print ***We jumped back to line 4 but should have gone to
2**
sys.exit(1)
frame.f_lineno = 2 # And 3 is broken too.
except NameError:
pass
return tracer # This helps emacs figure indentation out
sys.settrace(tracer)
execfile(jumpbug2.py)
#END first file
file jumpbug2.py:
#!/usr/bin/env python
x = 2 # This statement gets skipped the 2nd time around
q = 1 # This statement gets skipped too!
try: # tracer() will exit here if z == 0 and line_no == 4
y = z
except NameError:
z = 0
print When tracing via tracer(), f_lineno will be set to 2 here.
print You should never get here when tracing
file jumpbug2.py:
--
Comment By: gotgenes (gotgenes)
Date: 2007-03-28 21:24
Message:
Logged In: YES
user_id=1180453
Originator: YES
Truthfully, I don't have enough know-how to write a full test case or a
patch. I have put forth a request on the comp.lang.python thread (link in
original report) for those that would to please do so.
[ python-Bugs-1622664 ] language reference index links are broken
Bugs item #1622664, was opened at 2006-12-26 22:15 Message generated for change (Comment added) made by facundobatista You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1622664group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Documentation Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Drew Perttula (drewp) Assigned to: Nobody/Anonymous (nobody) Summary: language reference index links are broken Initial Comment: http://docs.python.org/ref/genindex.html For example, this text globals() (built-in function) links to http://docs.python.org/ref/exec.html#l2h-571, which is completely wrong. Some links are correct, but many others are broken. The page footer says Release 2.5, documentation updated on 19th September, 2006. -- Comment By: Facundo Batista (facundobatista) Date: 2007-03-31 09:05 Message: Logged In: YES user_id=752496 Originator: NO Where do you think it should point to? Take note that you're looking into the language reference, not the library reference. Regards, -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1622664group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-920573 ] http libraries throw errors internally
Bugs item #920573, was opened at 2004-03-21 15:16 Message generated for change (Comment added) made by facundobatista You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=920573group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: None Status: Open Resolution: Rejected Priority: 5 Private: No Submitted By: Bram Cohen (bram_cohen) Assigned to: Nobody/Anonymous (nobody) Summary: http libraries throw errors internally Initial Comment: Here's an error which someone just got running BitTorrent - Exception in thread Thread-2: Traceback (most recent call last): File /usr/lib/python2.3/threading.py, line 436, in __bootstrap self.run() File /usr/lib/python2.3/threading.py, line 416, in run self.__target(*self.__args, **self.__kwargs) File /usr/lib/python2.3/site-packages/BitTorrent/Rerequester.py, line 72, in rerequest h = urlopen(url) File /usr/lib/python2.3/urllib2.py, line 129, in urlopen return _opener.open(url, data) File /usr/lib/python2.3/urllib2.py, line 326, in open '_open', req) File /usr/lib/python2.3/urllib2.py, line 306, in _call_chain result = func(*args) File /usr/lib/python2.3/urllib2.py, line 491, in lambda lambda r, proxy=url, type=type, meth=self.proxy_open: \ File /usr/lib/python2.3/urllib2.py, line 498, in proxy_open if '@' in host: TypeError: iterable argument required And here's one which people have been getting *forever*, without it ever having been fixed (I've been simply catching and ignoring it) - Exception in thread Thread-60: Traceback (most recent call last): File /usr/lib/python2.2/threading.py, line 414, in __bootstrap self.run() File /usr/lib/python2.2/threading.py, line 402, in run apply(self.__target, self.__args, self.__kwargs) File /home/zkessin/bin/BitTorrent/Rerequester.py, line 85, in rerequest r = h.read() File /usr/lib/python2.2/httplib.py, line 1140, in read assert not self._line_consumed and self._line_left AssertionError Both of the above were caused by very straightforward calls to httplib. I'm fairly certain (especially with the second one) that they're internal bugs. I'd like to mention while I'm at it that I'm extremely unhappy with httplib. It's buggy, blocking, and doesn't even support timeouts. While it's good to have a library which supports all the vagaries of http, it would be far better for it to be a simple object which you tell when data was received and it tells you when there's data to be sent out. That way it could integrate easily into other applications's event loops. The blocking and buggy nature of httplib has caused me no end of headaches, and I think I'm not the only one. -- Comment By: Facundo Batista (facundobatista) Date: 2007-03-31 09:09 Message: Logged In: YES user_id=752496 Originator: NO For any bug to be solved, we'd need a way to reproduce it. Thes three points are very useful: - What do you do - What do you get - What do you expect this is an error from somebody running bittorrent is not specific enough to us to be able to find the bug (if any). Please, consider detail this a bit more. Regards, -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=920573group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1623153 ] preferred diff format should be mentioned as unified.
Bugs item #1623153, was opened at 2006-12-27 18:18 Message generated for change (Settings changed) made by facundobatista You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1623153group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Documentation Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Raghuram Devarakonda (draghuram) Assigned to: Facundo Batista (facundobatista) Summary: preferred diff format should be mentioned as unified. Initial Comment: The page at http://www.python.org/dev/tools/ mentions that context diffs are preferred. However, the link at http://www.python.org/dev/patches/ mentions that We like unified diffs. We grudgingly accept contextual diffs.. So tools page should preferably mention unified diffs as well. Thanks, Raghu -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1623153group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1430435 ] urllib2 has memory leaks
Bugs item #1430435, was opened at 2006-02-13 01:30 Message generated for change (Comment added) made by facundobatista You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1430435group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.4 Status: Open Resolution: None Priority: 5 Private: No Submitted By: halfik (halfik) Assigned to: Nobody/Anonymous (nobody) Summary: urllib2 has memory leaks Initial Comment: reg = urllib2.Request(url, data, headers) rl_handle = urllib2.urlopen(reg) urllib2 has hot memory leaks. gc: uncollectable _fileobject memory_adres gc: uncollectable list memory adres -- Comment By: Facundo Batista (facundobatista) Date: 2007-03-31 09:36 Message: Logged In: YES user_id=752496 Originator: NO How did you produce those results? (how can I reproduce them?) In which Python version you did? Regards, -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1430435group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1379209 ] socket.recv(OOB) raises exception on closed socket
Bugs item #1379209, was opened at 2005-12-13 00:14 Message generated for change (Settings changed) made by facundobatista You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1379209group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: Python 2.4 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Roy Smith (roysmith) Assigned to: Facundo Batista (facundobatista) Summary: socket.recv(OOB) raises exception on closed socket Initial Comment: frame:pyClient$ python Python 2.4.1 (#1, Aug 16 2005, 20:11:22) [GCC 3.4.3] on sunos5 Type help, copyright, credits or license for more information. ^D frame:pyClient$ uname -a SunOS frame 5.8 Generic_108528-27 sun4u sparc If you try to read out-of-band data on a closed socket, the recv() call raises socket.error, signaling invalid argument. This seems wrong. Doing a normal (in-band) recv() on a closed socket returns an empty string; trying to read OOB data should do the same thing. At worst, it should raise a more specific error. I'm guessing this exception is reflecting an errno of EBADF. A more specific error would at least make it clear that it's the first argument to recv() which was bad, not the second. frame:pyClient$ cat oob.py #!/usr/bin/env python import socket s = socket.socket() s.connect ((localhost, 13)) # 13 = daytime print == , `s.recv(1024)` print OOB: , `s.recv (1024, socket.MSG_OOB)` frame:pyClient$ ./oob.py == 'Mon Dec 12 22:00:29 2005\n\r' OOB: Traceback (most recent call last): File ./oob.py, line 8, in ? print OOB: , `s.recv (1024, socket.MSG_OOB)` socket.error: (22, 'Invalid argument') frame:pyClient$ -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1379209group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1671676 ] test_mailbox is hanging while doing gmake test on HP-UX v3
Bugs item #1671676, was opened at 2007-03-01 19:24 Message generated for change (Comment added) made by shashikala You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1671676group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Threads Group: Python 2.5 Status: Open Resolution: None Priority: 5 Private: No Submitted By: shashi (shashikala) Assigned to: Nobody/Anonymous (nobody) Summary: test_mailbox is hanging while doing gmake test on HP-UX v3 Initial Comment: Hi , I am testing Python 2.5 on HP-UX 11iv3 using gmake test , while testing the test test_mailbox.py is hanging . when tried to track the problem i came to know that in the function if pid == 0: # In the child, lock the mailbox. self._box.lock() time.sleep(2) self._box.unlock() os._exit(0) # In the parent, sleep a bit to give the child time to acquire # the lock. time.sleep(0.5) try: self.assertRaises(mailbox.ExternalClashError, self._box.lock) finally: # Wait for child to exit. Locking should now succeed. exited_pid, status = os.waitpid(pid, 0) after forking the child , child is not returning status to the parent while its waiting for the return status. which part of the Python functionality is checked. Please assist me to solve this. Thanks in advance , shashi -- Comment By: shashi (shashikala) Date: 2007-03-31 20:27 Message: Logged In: YES user_id=1506183 Originator: YES please find attached log stacktrace of test_mailbox.py , assist me to analyse the test hang. File Added: python.txt -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1671676group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1688393 ] sock.recvfrom(-24) crashes
Bugs item #1688393, was opened at 2007-03-26 07:13
Message generated for change (Comment added) made by nnorwitz
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not just the latest update.
Category: Extension Modules
Group: Python 2.5
Status: Closed
Resolution: Fixed
Priority: 5
Private: No
Submitted By: Andrew Bennetts (spiv)
Assigned to: Facundo Batista (facundobatista)
Summary: sock.recvfrom(-24) crashes
Initial Comment:
Actually sock.recvfrom(x) crashes or causes memory corruption for all values in
-sizeof(PyStringObject) = x 0, I think.
This script demonstrates the problem:
import socket, sys
s1 = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s1.bind(('127.0.0.1', ))
s2 = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
s2.sendto('fdsjkldsfkj', ('127.0.0.1', ))
print s1.recvfrom(-24)
Try e.g. -1 instead of -24 as well.
I'm attaching a patch that fixes this bug, and adds a simple test for it too.
Other sock_recv* functions in socketmodule.c seem to already catch negative
recvlen values and raise ValueError, but for some reason recvfrom missed out.
--
Comment By: Neal Norwitz (nnorwitz)
Date: 2007-03-31 11:57
Message:
Logged In: YES
user_id=33168
Originator: NO
Committed revision 54635. (2.5)
2.6 fix was in 54594.
Also fixed some other copy and paste errors wrt method names when parsing
arguments.
--
Comment By: Facundo Batista (facundobatista)
Date: 2007-03-27 20:46
Message:
Logged In: YES
user_id=752496
Originator: NO
Applied this to the trunk, let's see if we should backport it to 2.5.x
before close this bug.
--
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[ python-Bugs-1655392 ] thirdparty extensions, --enable-shared, static linking
Bugs item #1655392, was opened at 2007-02-08 17:16 Message generated for change (Comment added) made by gbrandl You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1655392group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Build Group: None Status: Closed Resolution: Fixed Priority: 5 Private: No Submitted By: Marien Zwart (marienz) Assigned to: Georg Brandl (gbrandl) Summary: thirdparty extensions, --enable-shared, static linking Initial Comment: (I'm filing this under the Build category which may not be entirely accurate, but couldn't find a closer match. Is there a description of what the categories mean somewhere?). Python 2.5 built with --enable-shared on linux produces a shared libpython2.5.so in the normal libdir and only a static libpython2.5.a in /usr/lib/python2.5/config. Normally when you build extensions you want them to link to the dynamic one. However python-config --ldflags has -L/usr/lib/python2.5/config in its output, causing build processes using it to prefer the static library over the dynamic one. This is somewhat similar to bug 1600860: distutils does the same thing when compiling extensions in an --enable-shared python 2.5. I think either python-config should be modified to not mention that config dir on an --enable-shared build or the build process should be modified to put a .so file next to the .a file in that directory. -- Comment By: Georg Brandl (gbrandl) Date: 2007-03-31 18:58 Message: Logged In: YES user_id=849994 Originator: NO Fixed in rev. 54634, 54636. -- Comment By: Martin v. Löwis (loewis) Date: 2007-02-09 12:46 Message: Logged In: YES user_id=21627 Originator: NO The categories aren't described anywhere. python-config should describe the installed code; we shouldn't change what gets installed how for 2.5.1. Georg, with python-config being your code, can you take a look? If not, please unassign (in which case I'd ask marienz whether he would like to contribute a patch). -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1655392group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-920573 ] http libraries throw errors internally
Bugs item #920573, was opened at 2004-03-21 13:16 Message generated for change (Comment added) made by rhettinger You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=920573group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Python Library Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Bram Cohen (bram_cohen) Assigned to: Nobody/Anonymous (nobody) Summary: http libraries throw errors internally Initial Comment: Here's an error which someone just got running BitTorrent - Exception in thread Thread-2: Traceback (most recent call last): File /usr/lib/python2.3/threading.py, line 436, in __bootstrap self.run() File /usr/lib/python2.3/threading.py, line 416, in run self.__target(*self.__args, **self.__kwargs) File /usr/lib/python2.3/site-packages/BitTorrent/Rerequester.py, line 72, in rerequest h = urlopen(url) File /usr/lib/python2.3/urllib2.py, line 129, in urlopen return _opener.open(url, data) File /usr/lib/python2.3/urllib2.py, line 326, in open '_open', req) File /usr/lib/python2.3/urllib2.py, line 306, in _call_chain result = func(*args) File /usr/lib/python2.3/urllib2.py, line 491, in lambda lambda r, proxy=url, type=type, meth=self.proxy_open: \ File /usr/lib/python2.3/urllib2.py, line 498, in proxy_open if '@' in host: TypeError: iterable argument required And here's one which people have been getting *forever*, without it ever having been fixed (I've been simply catching and ignoring it) - Exception in thread Thread-60: Traceback (most recent call last): File /usr/lib/python2.2/threading.py, line 414, in __bootstrap self.run() File /usr/lib/python2.2/threading.py, line 402, in run apply(self.__target, self.__args, self.__kwargs) File /home/zkessin/bin/BitTorrent/Rerequester.py, line 85, in rerequest r = h.read() File /usr/lib/python2.2/httplib.py, line 1140, in read assert not self._line_consumed and self._line_left AssertionError Both of the above were caused by very straightforward calls to httplib. I'm fairly certain (especially with the second one) that they're internal bugs. I'd like to mention while I'm at it that I'm extremely unhappy with httplib. It's buggy, blocking, and doesn't even support timeouts. While it's good to have a library which supports all the vagaries of http, it would be far better for it to be a simple object which you tell when data was received and it tells you when there's data to be sent out. That way it could integrate easily into other applications's event loops. The blocking and buggy nature of httplib has caused me no end of headaches, and I think I'm not the only one. -- Comment By: Raymond Hettinger (rhettinger) Date: 2007-03-31 14:29 Message: Logged In: YES user_id=80475 Originator: NO Both of these still need to be looked at (whether or not Bram supplies more detail). -- Comment By: Facundo Batista (facundobatista) Date: 2007-03-31 07:09 Message: Logged In: YES user_id=752496 Originator: NO For any bug to be solved, we'd need a way to reproduce it. Thes three points are very useful: - What do you do - What do you get - What do you expect this is an error from somebody running bittorrent is not specific enough to us to be able to find the bug (if any). Please, consider detail this a bit more. Regards, -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=920573group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1623153 ] preferred diff format should be mentioned as unified.
Bugs item #1623153, was opened at 2006-12-27 16:18 Message generated for change (Comment added) made by rhettinger You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1623153group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Documentation Group: None Status: Closed Resolution: Wont Fix Priority: 5 Private: No Submitted By: Raghuram Devarakonda (draghuram) Assigned to: Facundo Batista (facundobatista) Summary: preferred diff format should be mentioned as unified. Initial Comment: The page at http://www.python.org/dev/tools/ mentions that context diffs are preferred. However, the link at http://www.python.org/dev/patches/ mentions that We like unified diffs. We grudgingly accept contextual diffs.. So tools page should preferably mention unified diffs as well. Thanks, Raghu -- Comment By: Raymond Hettinger (rhettinger) Date: 2007-03-31 14:38 Message: Logged In: YES user_id=80475 Originator: NO I don't think we really do care. Sometimes context diffs are easier to understand and sometimes unified diffs are the way to go depending on the patch. I say, let the world do what the world will do. No unnecessary rules. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1623153group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1689617 ] Intel icc build fails with optimizations -O2
Bugs item #1689617, was opened at 2007-03-27 21:26 Message generated for change (Comment added) made by nnorwitz You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1689617group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Build Group: Python 2.5 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Michael Forbes (mforbes) Assigned to: Nobody/Anonymous (nobody) Summary: Intel icc build fails with optimizations -O2 Initial Comment: When building python 2.5 with the free Intel compilers for non-commercial use (icc), the build works without optimizations, but fails when optimizations -O2 and -O3 are used. The compilation proceedes without errors (though there are lot's of warnings and remarks) and makes a python executable, but when the python setup starts, the intepreter cannot import certain packages and cannot add two strings. case $MAKEFLAGS in \ *-s*) CC='icc -pthread' LDSHARED='icc -pthread -shared' OPT='-DNDEBUG -g -O2 -Ob2 -w1' ./python -E ./setup.py -q build;; \ *) CC='icc -pthread' LDSHARED='icc -pthread -shared' OPT='-DNDEBUG -g -O2 -Ob2 -w1' ./python -E ./setup.py build;; \ esac 'import site' failed; use -v for traceback Traceback (most recent call last): File ./setup.py, line 6, in module import sys, os, imp, re, optparse File /int/apps/mmf/src/Python-2.5_intel/Lib/optparse.py, line 71, in module import textwrap File /int/apps/mmf/src/Python-2.5_intel/Lib/textwrap.py, line 10, in module import string, re File /int/apps/mmf/src/Python-2.5_intel/Lib/string.py, line 26, in module letters = lowercase + uppercase SystemError: error return without exception set make: *** [sharedmods] Error 1 For example: $ ./python 'import site' failed; use -v for traceback Python 2.5 (r25:51908, Mar 27 2007, 20:10:22) [GCC Intel(R) C++ gcc 3.4 mode] on linux2 Type help, copyright, credits or license for more information. a = 123 a + 12 Traceback (most recent call last): File stdin, line 1, in module SystemError: error return without exception set Note that both the import of the site file fails and the addition fails. Python was configured with the following options: ./configure --with-gcc=icc\ --with-cxx-main=icc\ --prefix=/int/apps/mmf/apps/Python-2.5_intel/\ OPT=-g -O2 -Ob2 -w1 When compiled with fewer optimiztions, everything seems to work. ./configure --with-gcc=icc\ --with-cxx-main=icc\ --prefix=/int/apps/mmf/apps/Python-2.5_intel/\ OPT=-g -O1 -Ob2 -w1 -- Comment By: Neal Norwitz (nnorwitz) Date: 2007-03-31 12:56 Message: Logged In: YES user_id=33168 Originator: NO My guess is that it relates to strict aliasing (which Python violates). Can you find the equivalent flag to gcc's -fno-strict-aliasing in icc? -- Comment By: Michael Forbes (mforbes) Date: 2007-03-29 15:06 Message: Logged In: YES user_id=253921 Originator: YES I have spoken with some people who have had similar issues with the intel compilers in other applications, so it looks like it might be a compiler bug. I will look into this. Can anyone confirm this behaviour? (I only have access to one linux box). -- Comment By: Martin v. Löwis (loewis) Date: 2007-03-28 04:32 Message: Logged In: YES user_id=21627 Originator: NO Can you debug this further to determine a specific problem? It could be a compiler bug also, for all I can tell. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1689617group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1689617 ] Intel icc build fails with optimizations -O2
Bugs item #1689617, was opened at 2007-03-28 04:26 Message generated for change (Comment added) made by mforbes You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1689617group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Build Group: Python 2.5 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Michael Forbes (mforbes) Assigned to: Nobody/Anonymous (nobody) Summary: Intel icc build fails with optimizations -O2 Initial Comment: When building python 2.5 with the free Intel compilers for non-commercial use (icc), the build works without optimizations, but fails when optimizations -O2 and -O3 are used. The compilation proceedes without errors (though there are lot's of warnings and remarks) and makes a python executable, but when the python setup starts, the intepreter cannot import certain packages and cannot add two strings. case $MAKEFLAGS in \ *-s*) CC='icc -pthread' LDSHARED='icc -pthread -shared' OPT='-DNDEBUG -g -O2 -Ob2 -w1' ./python -E ./setup.py -q build;; \ *) CC='icc -pthread' LDSHARED='icc -pthread -shared' OPT='-DNDEBUG -g -O2 -Ob2 -w1' ./python -E ./setup.py build;; \ esac 'import site' failed; use -v for traceback Traceback (most recent call last): File ./setup.py, line 6, in module import sys, os, imp, re, optparse File /int/apps/mmf/src/Python-2.5_intel/Lib/optparse.py, line 71, in module import textwrap File /int/apps/mmf/src/Python-2.5_intel/Lib/textwrap.py, line 10, in module import string, re File /int/apps/mmf/src/Python-2.5_intel/Lib/string.py, line 26, in module letters = lowercase + uppercase SystemError: error return without exception set make: *** [sharedmods] Error 1 For example: $ ./python 'import site' failed; use -v for traceback Python 2.5 (r25:51908, Mar 27 2007, 20:10:22) [GCC Intel(R) C++ gcc 3.4 mode] on linux2 Type help, copyright, credits or license for more information. a = 123 a + 12 Traceback (most recent call last): File stdin, line 1, in module SystemError: error return without exception set Note that both the import of the site file fails and the addition fails. Python was configured with the following options: ./configure --with-gcc=icc\ --with-cxx-main=icc\ --prefix=/int/apps/mmf/apps/Python-2.5_intel/\ OPT=-g -O2 -Ob2 -w1 When compiled with fewer optimiztions, everything seems to work. ./configure --with-gcc=icc\ --with-cxx-main=icc\ --prefix=/int/apps/mmf/apps/Python-2.5_intel/\ OPT=-g -O1 -Ob2 -w1 -- Comment By: Michael Forbes (mforbes) Date: 2007-03-31 20:31 Message: Logged In: YES user_id=253921 Originator: YES It does not appear to be a problem with aliasing (icc accepts the -fno-strict-aliasing flag and it is set by default using ./configure. It is another question of whether or not icc behaves this flag!). This looks similar to a previous problem but I am not using any processor specific optimizations: http://mail.python.org/pipermail/python-list/2005-March/312145.html -- Comment By: Neal Norwitz (nnorwitz) Date: 2007-03-31 19:56 Message: Logged In: YES user_id=33168 Originator: NO My guess is that it relates to strict aliasing (which Python violates). Can you find the equivalent flag to gcc's -fno-strict-aliasing in icc? -- Comment By: Michael Forbes (mforbes) Date: 2007-03-29 22:06 Message: Logged In: YES user_id=253921 Originator: YES I have spoken with some people who have had similar issues with the intel compilers in other applications, so it looks like it might be a compiler bug. I will look into this. Can anyone confirm this behaviour? (I only have access to one linux box). -- Comment By: Martin v. Löwis (loewis) Date: 2007-03-28 11:32 Message: Logged In: YES user_id=21627 Originator: NO Can you debug this further to determine a specific problem? It could be a compiler bug also, for all I can tell. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1689617group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1689617 ] Intel icc build fails with optimizations -O2
Bugs item #1689617, was opened at 2007-03-28 04:26 Message generated for change (Comment added) made by mforbes You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1689617group_id=5470 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: Build Group: Python 2.5 Status: Open Resolution: None Priority: 5 Private: No Submitted By: Michael Forbes (mforbes) Assigned to: Nobody/Anonymous (nobody) Summary: Intel icc build fails with optimizations -O2 Initial Comment: When building python 2.5 with the free Intel compilers for non-commercial use (icc), the build works without optimizations, but fails when optimizations -O2 and -O3 are used. The compilation proceedes without errors (though there are lot's of warnings and remarks) and makes a python executable, but when the python setup starts, the intepreter cannot import certain packages and cannot add two strings. case $MAKEFLAGS in \ *-s*) CC='icc -pthread' LDSHARED='icc -pthread -shared' OPT='-DNDEBUG -g -O2 -Ob2 -w1' ./python -E ./setup.py -q build;; \ *) CC='icc -pthread' LDSHARED='icc -pthread -shared' OPT='-DNDEBUG -g -O2 -Ob2 -w1' ./python -E ./setup.py build;; \ esac 'import site' failed; use -v for traceback Traceback (most recent call last): File ./setup.py, line 6, in module import sys, os, imp, re, optparse File /int/apps/mmf/src/Python-2.5_intel/Lib/optparse.py, line 71, in module import textwrap File /int/apps/mmf/src/Python-2.5_intel/Lib/textwrap.py, line 10, in module import string, re File /int/apps/mmf/src/Python-2.5_intel/Lib/string.py, line 26, in module letters = lowercase + uppercase SystemError: error return without exception set make: *** [sharedmods] Error 1 For example: $ ./python 'import site' failed; use -v for traceback Python 2.5 (r25:51908, Mar 27 2007, 20:10:22) [GCC Intel(R) C++ gcc 3.4 mode] on linux2 Type help, copyright, credits or license for more information. a = 123 a + 12 Traceback (most recent call last): File stdin, line 1, in module SystemError: error return without exception set Note that both the import of the site file fails and the addition fails. Python was configured with the following options: ./configure --with-gcc=icc\ --with-cxx-main=icc\ --prefix=/int/apps/mmf/apps/Python-2.5_intel/\ OPT=-g -O2 -Ob2 -w1 When compiled with fewer optimiztions, everything seems to work. ./configure --with-gcc=icc\ --with-cxx-main=icc\ --prefix=/int/apps/mmf/apps/Python-2.5_intel/\ OPT=-g -O1 -Ob2 -w1 -- Comment By: Michael Forbes (mforbes) Date: 2007-04-01 00:53 Message: Logged In: YES user_id=253921 Originator: YES I have narrowed the problem a bit to the file Python/ceval.c. If you build this manually without optimizations, then everything works fine (make test works). icc -pthread -c -fno-strict-aliasing -DNDEBUG -g -w1 -O1 \ -I. -I./Include -DPy_BUILD_CORE -o Python/ceval.o Python/ceval.c I have included the warnings the compiler spits out (but it spits out similar warnings everywhere, so I doubt that these are the problem) and attached the optimization report. I tried turning off as much as possible (inlining, loop unrolling etc.) but could still not get it to work. There are some threads about loop unrolling issues with icc, but these were for -O3 optimizations: http://softwarecommunity.intel.com/isn/community/en-us/forums/thread/321812.aspx If I compile with -O1 and -Ob1 then it breaks and I get the optimization report attached. The wierd thing is that if I use -O1 and -finline, I get an empty optimization report and it works. TFM states that -finline [is the] Same as -Ob1. This at least is a compiler problem! I suspect that -Ob1 is doing more than just inlining (it looks that way from the report) so I am not exactly sure where the problem is here yet. icc -pthread -c -fno-strict-aliasing -DNDEBUG -g -Wall -O1\ -Ob1 -opt-report -opt-report-level=max -opt-report-file=opt.rep.txt\ -I. -I./Include -DPy_BUILD_CORE -o Python/ceval.o Python/ceval.c Python/ceval.c(198): remark #869: parameter self was never referenced PyEval_GetCallStats(PyObject *self) ^ Python/ceval.c(2710): remark #981: operands are evaluated in unspecified order PyString_AsString(keyword)); ^ Python/ceval.c(2706): remark #981: operands are evaluated in unspecified order PyErr_Format(PyExc_TypeError, ^ Python/ceval.c(2722): remark #981: operands are evaluated in unspecified order PyString_AsString(keyword));
