import question on wx ?

[diffuser78]

I have installed wx and everything looks fine. I have written a small
app that uses wx.

When I run my program from the console like
ubuntu $ python PROGRAM_NAME.py

it gives error
Traceback (most recent call last):
  File "Project.py", line 6, in ?
import wx
ImportError: No module named wx


But if I run the program from SPE (Stani's Python Editor) it just runs
fine.


How can I resolve such an issue. Please help. Is my path settting worng
..?

Every help is appreciated.

Thanks

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Re: import question on wx ?

[diffuser78]

I think what you say makes perfect sense

I am using 2.4.2 python (I typed pthon -V on console to get)

How can I find what my SPE editor is using ?




John Salerno wrote:
> [EMAIL PROTECTED] wrote:
> > I have installed wx and everything looks fine. I have written a small
> > app that uses wx.
> >
> > When I run my program from the console like
> > ubuntu $ python PROGRAM_NAME.py
> >
> > it gives error
> > Traceback (most recent call last):
> >   File "Project.py", line 6, in ?
> > import wx
> > ImportError: No module named wx
> >
> >
> > But if I run the program from SPE (Stani's Python Editor) it just runs
> > fine.
>
> It could be that the Python version you are using to launch the app from
> the console is the preinstalled version on your system and therefore
> wxPython wasn't installed into that version. Do you have multiple
> versions of Python installed? Probably SPE is using the other version
> which *does* have wxPython in it.

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Re: import question on wx ?

[diffuser78]

That right..on my console it shows python 2.4.2 and on SPE it shows
2.4.3. The wxPython is working fine in SPE i.e with Python 2.4.3.

How can I make sure that when I type python on console I get the 2.4.3
?

Every help is greatly appreciated.

Thanks


John Salerno wrote:
> [EMAIL PROTECTED] wrote:
> > I have installed wx and everything looks fine. I have written a small
> > app that uses wx.
> >
> > When I run my program from the console like
> > ubuntu $ python PROGRAM_NAME.py
> >
> > it gives error
> > Traceback (most recent call last):
> >   File "Project.py", line 6, in ?
> > import wx
> > ImportError: No module named wx
> >
> >
> > But if I run the program from SPE (Stani's Python Editor) it just runs
> > fine.
>
> It could be that the Python version you are using to launch the app from
> the console is the preinstalled version on your system and therefore
> wxPython wasn't installed into that version. Do you have multiple
> versions of Python installed? Probably SPE is using the other version
> which *does* have wxPython in it.

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Python Path

[diffuser78]

I have two python 2.4s on my Ubuntu Linux box. One  is Python 2.4.2 and
other is Python 2.4.3. I use SPE as an IDE for coding. I have written a
small app in wxPython. If I run it from SPE it just works fine, but if
I run it from console it gives me import wx eror.

Following is the log which you might find helpful to answer my post.


1) ***When I just type python on console I get following
[EMAIL PROTECTED]:~$ python
ActivePython 2.4.2 Build 10 (ActiveState Corp.) based on
Python 2.4.2 (#1, Jan 17 2006, 15:39:23)
[GCC 2.95.3 20010315 (SuSE)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>>

2) ***AND SPE is using the following version of Python
Python 2.4.3 (#2, Apr 27 2006, 14:43:58)
[GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2


3) ***When I type sys.path on console I get following
>>> sys.path
['', '/opt/ActivePython-2.4/lib/python24.zip', '/opt/ActivePython-
2.4/lib/python 2.4', '/opt/ActivePython-2.4/lib/python2.4/plat-linux2',
'/opt/ActivePython-2.4/ lib/python2.4/lib-tk',
'/opt/ActivePython-2.4/lib/python2.4/lib-dynload', '/opt/
ActivePython-2.4/lib/python2.4/site-packages']

4) ***When I type sys.path on SPE I get following
>> sys.path
['/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode',
'/usr/share/spe', '/usr/lib/python24.zip', '/usr/lib/python2.4',
'/usr/lib/python2.4/plat-linux2', '/usr/lib/python2.4/lib-tk',
'/usr/lib/python2.4/lib-dynload',
'/usr/local/lib/python2.4/site-packages',
'/usr/lib/python2.4/site-packages',
'/usr/lib/python2.4/site-packages/HTMLgen',
'/usr/lib/python2.4/site-packages/Numeric',
'/usr/lib/python2.4/site-packages/PIL',
'/usr/lib/python2.4/site-packages/cairo',
'/usr/lib/python2.4/site-packages/gst- 0.10',
'/usr/lib/python2.4/site-packages/gtk-2.0',
'/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode',
'/usr/lib/site-python', '/usr/lib/python2.4/site-packages/_spe',
'/usr/lib/python2.4/site-packages/_spe/plugins',
u'/home/darshan/Desktop/Project']


5) *** on which python I get the following
which python
/opt/ActivePython-2.4/bin/python


I want to get rid of ActivePython which I happend to install because I
was trying to Test the IDE by ActiveState and I think this version of
Python was installed by it.

I am happy using Python 2.4.3 but there is not way I am being able to
use it on console. 


Every help is appreciated.

Thanks

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Re: Python Path

[diffuser78]

In my .basrc file I commented the line of ActivePyton and after reboot
everything is fine now.

I can use Python 2.4.3 even on console and SPE both.

thanks


[EMAIL PROTECTED] wrote:
> I have two python 2.4s on my Ubuntu Linux box. One  is Python 2.4.2 and
> other is Python 2.4.3. I use SPE as an IDE for coding. I have written a
> small app in wxPython. If I run it from SPE it just works fine, but if
> I run it from console it gives me import wx eror.
>
> Following is the log which you might find helpful to answer my post.
>
>
> 1) ***When I just type python on console I get following
> [EMAIL PROTECTED]:~$ python
> ActivePython 2.4.2 Build 10 (ActiveState Corp.) based on
> Python 2.4.2 (#1, Jan 17 2006, 15:39:23)
> [GCC 2.95.3 20010315 (SuSE)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>>
>
> 2) ***AND SPE is using the following version of Python
> Python 2.4.3 (#2, Apr 27 2006, 14:43:58)
> [GCC 4.0.3 (Ubuntu 4.0.3-1ubuntu5)] on linux2
>
>
> 3) ***When I type sys.path on console I get following
> >>> sys.path
> ['', '/opt/ActivePython-2.4/lib/python24.zip', '/opt/ActivePython-
> 2.4/lib/python 2.4', '/opt/ActivePython-2.4/lib/python2.4/plat-linux2',
> '/opt/ActivePython-2.4/ lib/python2.4/lib-tk',
> '/opt/ActivePython-2.4/lib/python2.4/lib-dynload', '/opt/
> ActivePython-2.4/lib/python2.4/site-packages']
>
> 4) ***When I type sys.path on SPE I get following
> >> sys.path
> ['/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode',
> '/usr/share/spe', '/usr/lib/python24.zip', '/usr/lib/python2.4',
> '/usr/lib/python2.4/plat-linux2', '/usr/lib/python2.4/lib-tk',
> '/usr/lib/python2.4/lib-dynload',
> '/usr/local/lib/python2.4/site-packages',
> '/usr/lib/python2.4/site-packages',
> '/usr/lib/python2.4/site-packages/HTMLgen',
> '/usr/lib/python2.4/site-packages/Numeric',
> '/usr/lib/python2.4/site-packages/PIL',
> '/usr/lib/python2.4/site-packages/cairo',
> '/usr/lib/python2.4/site-packages/gst- 0.10',
> '/usr/lib/python2.4/site-packages/gtk-2.0',
> '/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode',
> '/usr/lib/site-python', '/usr/lib/python2.4/site-packages/_spe',
> '/usr/lib/python2.4/site-packages/_spe/plugins',
> u'/home/darshan/Desktop/Project']
>
>
> 5) *** on which python I get the following
> which python
> /opt/ActivePython-2.4/bin/python
>
>
> I want to get rid of ActivePython which I happend to install because I
> was trying to Test the IDE by ActiveState and I think this version of
> Python was installed by it.
>
> I am happy using Python 2.4.3 but there is not way I am being able to
> use it on console. 
> 
> 
> Every help is appreciated.
> 
> Thanks

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Client/Server Question

[diffuser78]

My server.py looks like this

-CODE--
#!/usr/bin/env python
import socket
import sys
import os

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = ''
port = 2000

s.bind((host,port))
s.listen(1)
conn, addr = s.accept()
print 'client is at', addr

while True:
data = conn.recv(100)
if (data == 'MaxSim'):
print 'MaxiSim'
os.system('notepad')
elif (data == 'Driving Sim'):
print 'Driving Sim'
os.system('explorer')
elif (data == 'SHUTDOWN'):
print 'Shutting down...'
os.system('shutdown -s')
conn.close()
break
---CODE
END-

I am running this above program on a windows machine. My client is a
Linux box. What I want to achieve is that server.py should follows
instructions till I send a 'SHUTDOWN' command upon which it should shut
down.

When I run this program and suppose send 'MaxSim' to it, it launches
notepad.exe fine, but then after that it doesn't accept subsequent
command. I want is that it should accept subsequent commands like
Driving Sim and launch windows explorer etc untill I send a 'SHUTDOWN'
command.

Any help on this, it will be greatly appreciated.

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Re: Client/Server Question

[diffuser78]

Is os.system() going to be deprecated in future ?.I read somewhere.

Dennis Benzinger wrote:
> [EMAIL PROTECTED] wrote:
> > My server.py looks like this
> >
> > -CODE--
> > #!/usr/bin/env python
> > import socket
> > import sys
> > import os
> >
> > s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> > host = ''
> > port = 2000
> >
> > s.bind((host,port))
> > s.listen(1)
> > conn, addr = s.accept()
> > print 'client is at', addr
> >
> > while True:
> > data = conn.recv(100)
> > if (data == 'MaxSim'):
> > print 'MaxiSim'
> > os.system('notepad')
> > elif (data == 'Driving Sim'):
> > print 'Driving Sim'
> > os.system('explorer')
> > elif (data == 'SHUTDOWN'):
> > print 'Shutting down...'
> > os.system('shutdown -s')
> > conn.close()
> > break
> > ---CODE
> > END-
> >
> > I am running this above program on a windows machine. My client is a
> > Linux box. What I want to achieve is that server.py should follows
> > instructions till I send a 'SHUTDOWN' command upon which it should shut
> > down.
> >
> > When I run this program and suppose send 'MaxSim' to it, it launches
> > notepad.exe fine, but then after that it doesn't accept subsequent
> > command. I want is that it should accept subsequent commands like
> > Driving Sim and launch windows explorer etc untill I send a 'SHUTDOWN'
> > command.
> >
> > Any help on this, it will be greatly appreciated.
> >
>
>
> os.system() blocks until the called program has finished. Use the
> subprocess module :
>
> 
>
> import subprocess
> 
> subprocess.Popen("notepad")
> 
> 
> 
> 
> Dennis

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Math package

[diffuser78]

I want to write a program which would have a 2 dimensional array of 1
billion by 1 billion. This is for computational purposes and evaluating
a mathematical concept similar to Erdos number.

Which is the best package for such programs (that would be fast
enough). 

Every help is appreciated.

Thanks

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Re: Math package

[diffuser78]

I will write the problem a little more clearer so that you guys can
recommend me better.

In a graphs of size N ( where, N = 1e9), each node has a degree D=1000.
i.e There are overall (D*N)/2 edges in the graph. This graph needs to
be generated randomly using the program.

Now my task is to find the shortest distance from each node to every
other node. And finally I want to find is the average distance from one
node to another node in the graph. This is an average Erdos number or
equivalently what degree of seperation exists in the graph.

I can start with low values of N and D but my ultimate aim is to
simulate this graph on big values of N and D.

Every help is greatly appreciated.

Thanks


[EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED]:
> > I want to write a program which would have a 2 dimensional array of 1
> > billion by 1 billion. This is for computational purposes and evaluating
> > a mathematical concept similar to Erdos number.
>
> Maybe you are talking about the edges of a graph with 1e9 nodes. This
> structure is surely quite sparse, so you don't need to store the edges
> in a matrix, you can manage is as a sparse structure, and maybe you
> don't need a Blue Gene.
>
> If you find ways to clean your data, reduce the vertex and arc count,
> and if you have a lot of memory, then maybe Boost Graph for Python may
> suffice:
> http://www.osl.iu.edu/~dgregor/bgl-python/
> 
> Bye,
> bearophile

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Re: Windows vs. Linux

[diffuser78]

Linux can let you do more in Python and this comes from my personal
exprience. Ubuntu Dapper should let you install drivers easily for
wireless...a little bit tweaking might be required but its worth the
effort. Python and Ubuntu rock...go fot it.

[EMAIL PROTECTED] wrote:
> Okay, once-upon-a-time I tried to start programming by learning C.  At
> the time I was younger and didn't really understand all that C had to
> offer.  I eventually moved over to Microsoft's Visual Basic.  It was
> nice to be able to design a visual application with no effort (too bad
> I didn't really learn the ins and outs of programming)
>
> Long story short, I want to get back into programming, and Python looks
> like a good choice for me to start with, and maybe become advanced
> with.  Right now I run Windows as my main operating system.  On my old
> laptop I ran Ubuntu, and liked it very much; however, my new laptop has
> a Broadcom wireless card, and it's not very Linux friendly.  Is Windows
> an okay enviornment in which to program under Python, or do you
> recommend that I run a dual-boot of Linux or maybe a VMWare install to
> program under Python?

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Re: Windows vs. Linux

[diffuser78]

> I'd never recommend dual-boot for anything!
> Hardware is cheap, time and trouble is expensive.

Dual-booting if so easy and helpful, I have always found it to be
extremely useful.

You might have a bad experience but I have my laptop and desktop both
running dual boot successfully for 4 and a half years now.

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Network Game in Python

[diffuser78]

I have to create a small and simple GUI app in Python which is similar
to a netwrok game. Let me expalain you. I need some suggestions. I
might use wxPython for GUI because that is the only GUI oolkit I know.

There are 6 players in the game. They are all connected though a LAN
(possible an internal network). There is one main supervirsor who
starts the game and other 5 are players.

Once the supervisor starts the game, a move goes randomly to any player
out of the 5 players. Once a player gets a move he has to act. Based on
his action next move will be generated by supervisor and sent to some
other player in the network. This process goes on untill the simulation
time ends. Winners and Loosers are decided by some point system which
supervisor keeps track of.

Some questions I have are:
1. How can I manage network messages among the players. Should
multicast be used or Actor should send the message to Supervisor and he
sends to all. ? What python modules can be handy in these things.

2. How can I manage moves among players. What move a player makes is
visible to all others in real time, so essentially all players have the
same consistent view of the game. Only the person with access can
actually make a move or carry out action. Any suggestion how to carry
out this thing.

3. Shold I use a flat file or some database in mySQL to measure points
etc ? I want to have a repository which keep tracks of all the mvoes in
the system and who played what move etc..? Any suggestions on this.

4. If you have any other input, it will be greatly appreciated.

Thanks

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paramter passing question

[diffuser78]

I wrote a small app in wxPython using wxGlade as designer tool. wxGlade
brings and writes a lot of code by itself and thats where my confusion
started. Its about parameter passing. Here is my little confusion.

***CODE BEGINS
class MyFrame1(wx.Frame):
def __init__(self, *args, **kwds):
 .
 .
def OnEdit(self, event):
 sim_name = 'some_string'
 win = MyFrame2(self, -1, "")
 win.Show(True)


class MyFrame2(wx.Frame):
def __init__(self, *args, **kwds):
 .
 .
def onLaunch(self, event):
 ## This function needs to use the parameter sim_name which is
in class MyFrame1-->OnEdit
***CODE ENDS

I want to pass sim_name parameter to MyFrame2 in def OnEdit function
but I don't know how to do it. I tried couple of things but always got
some error. I have done some parameter passing in normal Python code
but *args and **kwds is a little confusing.

Could you please tell me how to send parameter "sim_name" from
MyFrame1(in OnEdit function) and how to recieve it in MyFrame2 so that
I can use that parameter in MyFrame2 namespace.

Every help is appreciated.

Thanks

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Re: paramter passing question

[diffuser78]

It partly works but I get error printed out on the console.

Traceback (most recent call last):
  File "NewProject.py", line 87, in OnEdit
win = MyFrame4(self, -1, "",sim_name=sim_name)
  File "NewProject.py", line 1098, in __init__
wx.Frame.__init__(self, *args, **kwds)
  File
"/usr/lib/python2.4/site-packages/wx-2.6-gtk2-unicode/wx/_windows.py",
line 476, in __init__
newobj = _windows_.new_Frame(*args, **kwargs)
TypeError: 'sim_name' is an invalid keyword argument for this function

Larry Bates wrote:
> [EMAIL PROTECTED] wrote:
> > I wrote a small app in wxPython using wxGlade as designer tool. wxGlade
> > brings and writes a lot of code by itself and thats where my confusion
> > started. Its about parameter passing. Here is my little confusion.
> >
> > ***CODE BEGINS
> > class MyFrame1(wx.Frame):
> > def __init__(self, *args, **kwds):
> >  .
> >  .
> > def OnEdit(self, event):
> >  sim_name = 'some_string'
> >  win = MyFrame2(self, -1, "")
> >  win.Show(True)
> > 
> >
> > class MyFrame2(wx.Frame):
> > def __init__(self, *args, **kwds):
> >  .
> >  .
> > def onLaunch(self, event):
> >  ## This function needs to use the parameter sim_name which is
> > in class MyFrame1-->OnEdit
> > ***CODE ENDS
> >
> > I want to pass sim_name parameter to MyFrame2 in def OnEdit function
> > but I don't know how to do it. I tried couple of things but always got
> > some error. I have done some parameter passing in normal Python code
> > but *args and **kwds is a little confusing.
> >
> > Could you please tell me how to send parameter "sim_name" from
> > MyFrame1(in OnEdit function) and how to recieve it in MyFrame2 so that
> > I can use that parameter in MyFrame2 namespace.
> >
> > Every help is appreciated.
> >
> > Thanks
> >
> How about using the keyword args to pass it:
>
> class MyFrame1(wx.Frame):
> def __init__(self, *args, **kwds):
>  .
>  .
> def OnEdit(self, event):
>  sim_name = 'some_string'
>  win = MyFrame2(self, -1, "", sim_name=sim_name)
>  win.Show(True)
> 
>
> class MyFrame2(wx.Frame):
> def __init__(self, *args, **kwds):
>  .
>  .
> self.sim_name=kwds.get('sim_name', 'default sim_name')
>
> def onLaunch(self, event):
>  ## This function needs to use the parameter sim_name which is
>  ## self.sim_name can be used here
> 
> -Larry Bates

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Re: Client/Server Question

[diffuser78]

The subprocess module didn't work here. I tried using os.popen(), that
won't help it either.


What I am trying to achieve is that the server daemon is sitting and
listening to command from the client. As client send "MaxSim" it
launches MaxSim.exe and then again waits for subsequent commands.
Support client sends "DrivingSim" it should launch DrivingSim.exe etc.
It does till client sends a "SHUTODWN" message upon which it shuts down
itself.

Any pointers to achieve this more seamlessly.

Every help is greatly appreciated.

Thanks


Dennis Benzinger wrote:
> os.system() blocks until the called program has finished. Use the
> subprocess module :
>
> 
>
> import subprocess
> 
> subprocess.Popen("notepad")
> 
> 
> 
> 
> Dennis

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Re: Client/Server Question

[diffuser78]

> The recv() might return "MaxiSimDriving Sim". It could return
> "MaxiS" on one call, and "im" on the next. If the remote side
> closes the connection, recv() will keep returning the empty
> string, and your program will be stuck in an infinite loop.

How to overcome this problem ?

> Did you understand Faulkner's suggustion? Anyone who connects to
> TCP port 2000 can invoke "shutdown -s" (which I assume shuts down
> your host).

I did, anyone who connects to port 2000 might be able to send a
shutdown and close the computer. I am aware that its not the best way
to achieve this but my app runs on a small network without actually
connecting to internet.

Can you give any tips to overcome the above mentioned problem.

> --Bryan

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Re: Client/Server Question

[diffuser78]

I apologize.

subprocess did work for me like a charm I made a mistake in my code.
Appreciate your help.

Dennis Benzinger wrote:
> os.system() blocks until the called program has finished. Use the
> subprocess module :
>
> 
>
> import subprocess
> 
> subprocess.Popen("notepad")
> 
> 
> 
> 
> Dennis

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How to write a Installer for a Python App in Linux

[diffuser78]

Hi,

I have known python for about 3-4 months now. My knowledge is still
very limited.

I wrote a small app using wxPython. Now, I want to create an installer
for it (on Linux platform.) for the people I developed this small
utility.

These people use some customized variant of Red Hat Linux. I found on
the web python2.4 and the corresponding wxPython files.

How can I write a Installer file which will install all the needed
programs in the correct path, so that my wxPython app is ready to run
and end user doesn't need to bother installing required files.

Give me some pointers and I will try to write the script on my own.

Every help is greatly appreciated.

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Re: How to write a Installer for a Python App in Linux

[diffuser78]

I saw some examples and understood for most part how to write a
setpu.py.

Since I want to bundle python and wxPython along with my
application...how can I do that.

Any code gurus can throw some pointers.

Every help is appreciated.

Bruno Desthuilliers wrote:


> Look for distutil and EasyInstall (-> Python Eggs)

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Re: How to write a Installer for a Python App in Linux

[diffuser78]

Hi,

How can we freeze the python program and how will it ensure that all
the python files are packages with the programs (including python and
wxPython). Can anybody give me some pointers on this.

Every help is appreciated. Thanks.

> You could freeze the Python program. That'll ensure all the required
> files are packaged with your program, including Python itself. If you
> build a RPM from that, your users will be quite happy.
 
> Sybren

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Including python and wxPython in distutils

[diffuser78]

I wrote a small app in python and used wxPython in it. Now, I am trying
to create an .rpm file for linux RedHat Distro. I want the ability in
my installer to install python2.4 and wxPython too along with the .py
files which are in the project.

I am trying to use distutils. Can anybody give some pointers to do this
fast ?

Every help is greatly appreciated.

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Re: How to write a Installer for a Python App in Linux

[diffuser78]

Has anybody written a file for cx_freeze. I am running Ubuntu Linux and
downloaded version for Python2.4. When I run it I get an error saying
that I dont have GLIBC_2.4.

I couldnt find this in Synaptic too.

Any clues ?

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Help with cx_freeze module

[diffuser78]

Has anybody written a file for cx_freeze. I am running Ubuntu Linux and
downloaded version for Python2.4. When I run it I get an error saying
that I dont have GLIBC_2.4. I searched around but couldn't find a .deb
for Ubuntu, I couldnt find this in Synaptic too.

Any clues or pointers as to how to get cx_freeze up and running.

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Graph Theory

[diffuser78]

Is there any library in Python which has implementation of graph
theoretic algorithms and models ?

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Re: Graph Theory

[diffuser78]

Thanks for your quick reply. Since I have not read the documentation, I
was wondering if you can generate random graph and analyze some
peroperties of it like clustering coefficient or graph density. I am a
graph theory student and want to use python for development. Somebody
told me that Python has already so much bultin. Are there any
visualization tool which would depict the random graph generated by the
libraries.

Thanks for any kind of input.


[EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED]:
> > Is there any library in Python which has implementation of graph
> > theoretic algorithms and models ?
>
> There are many of them, like:
> https://networkx.lanl.gov/
> Mine:
> http://sourceforge.net/projects/pynetwork/
> ...and some other.
> 
> Bye,
> bearophile

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Re: Graph Theory

[diffuser78]

Thanks for all your responses.

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Re: Graph Theory

[diffuser78]

Is there any documentation avaialbe for networkx ? I want to have an
implementation of random graphs including watts and strogatz graph.

[EMAIL PROTECTED] wrote:
> [EMAIL PROTECTED] wrote:
> > Thanks for your quick reply. Since I have not read the documentation, I
> > was wondering if you can generate random graph and analyze some
> > peroperties of it like clustering coefficient or graph density. I am a
> > graph theory student and want to use python for development. Somebody
> > told me that Python has already so much bultin. Are there any
> > visualization tool which would depict the random graph generated by the
> > libraries.
>
> networkx has several random graph generators, including:
>
>barabasi_albert_graph
>binomial_graph
>erdos_renyi_graph
>gnm_random_graph
>gnp_random_graph
>random_regular_graph
>watts_strogatz_graph
>
> and others (e.g. via configuration_model)
>
> For drawing you can use pygraphviz (also available at
> networkx.lanl.gov)
> or the built-in drawing tools.
>
> e.g.
>
> >>> from networkx import *
> >>> no_nodes=1000
> >>> for p in [ 0.1, 0.2, 0.3]:
> >>>g = watts_strogatz_graph(no_nodes, 4, p)
> >>>print density(g), average_clustering(g)
>
> be warned that drawing large random graphs are not overly insightful
> 
> check the examples

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shortest mean path length

[diffuser78]

Is there any function in networkx which can compute the shortest mean
path length. (Shortest length between all pairs of the nodes in the
graph). 

Thanks,

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Customized Boot Manager in Python

[diffuser78]

I have to create a small visual interface program called as Boot
Manager which is customized accoring to the needs.

I have around 8 pc's and 2 linux boxes. One Linux box is always on and
all other are closed in sleep state.

I have to perform the following things:

1. Boot up all of them. I used Wake on LAN and wrote a small python
script for that. It works fine.
2. To shutdown all pc's when the work is done. For this I installed an
OpenSSH server for Windows in PC. When I send a command using ssh it
shuts it down.


Now, I have to create a visual interface for such kind of small
program.

I have 2 questions
(i) How can we use operating system specific commands like ssh within
the python program (ii) Which grphics library (wxPython or any other)
would be the fastest with least learning curve to get this thing done.

Thanks

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GUI in Python using wxGlade

[diffuser78]

I recently tried a hand at wxGlade and was happy to see it designs a
GUI for you in minutes. I am a newbie Python coder. I am not completely
aware of GUI programming.

I can easily make menubars etc but I am not too sure sure how to get
more windows poppping to get more information. I mean when you click
something, a new windows would open and ask for input like that. Since
I am using wxGlade and wxPythoncan you suggest me a quick tutorial
for GUI programming. 

Every help is appreciate,

Thanks

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Re: GUI in Python using wxGlade

[diffuser78]

I am pasting my code. I created a small little GUI without any
functionality as of yet. I wanted to ask few questions on that.

[code]
#!/usr/bin/env python
# -*- coding: UTF-8 -*-
# generated by wxGlade 0.4cvs on Thu Jun 15 10:51:12 2006

import wx

class MyFrame(wx.Frame):
def __init__(self, *args, **kwds):
# begin wxGlade: MyFrame.__init__
kwds["style"] = wx.DEFAULT_FRAME_STYLE
wx.Frame.__init__(self, *args, **kwds)
self.panel_1 = wx.Panel(self, -1)

# Menu Bar
self.frame_1_menubar = wx.MenuBar()
self.SetMenuBar(self.frame_1_menubar)
self.File = wx.Menu()
self.CreateNewConfigFile = wx.MenuItem(self.File, wx.NewId(),
_("Create New Config File"), "", wx.ITEM_NORMAL)
self.File.AppendItem(self.CreateNewConfigFile)
self.OpenConfigFile = wx.MenuItem(self.File, wx.NewId(),
_("Open Config File"), "", wx.ITEM_NORMAL)
self.File.AppendItem(self.OpenConfigFile)
self.EditConfigFile = wx.MenuItem(self.File, wx.NewId(),
_("Edit Config File"), "", wx.ITEM_NORMAL)
self.File.AppendItem(self.EditConfigFile)
self.Close = wx.MenuItem(self.File, wx.NewId(), _("Close"), "",
wx.ITEM_NORMAL)
self.File.AppendItem(self.Close)
self.Exit = wx.MenuItem(self.File, wx.NewId(), _("Exit"), "",
wx.ITEM_NORMAL)
self.File.AppendItem(self.Exit)
self.frame_1_menubar.Append(self.File, _("File"))
self.Action = wx.Menu()
self.AddComputer = wx.MenuItem(self.Action, wx.NewId(), _("Add
Computer"), "", wx.ITEM_NORMAL)
self.Action.AppendItem(self.AddComputer)
self.Shutdown = wx.MenuItem(self.Action, wx.NewId(),
_("Shutdown..."), "", wx.ITEM_NORMAL)
self.Action.AppendItem(self.Shutdown)
self.ShutdownAll = wx.MenuItem(self.Action, wx.NewId(),
_("Shutdown All"), "", wx.ITEM_NORMAL)
self.Action.AppendItem(self.ShutdownAll)
self.frame_1_menubar.Append(self.Action, _("Action"))
self.Help = wx.Menu()
self.Tutorial = wx.MenuItem(self.Help, wx.NewId(),
_("Tutorial"), "", wx.ITEM_NORMAL)
self.Help.AppendItem(self.Tutorial)
self.AboutUs = wx.MenuItem(self.Help, wx.NewId(), _("About
us"), "", wx.ITEM_NORMAL)
self.Help.AppendItem(self.AboutUs)
self.frame_1_menubar.Append(self.Help, _("Help"))
# Menu Bar end
self.frame_1_statusbar = self.CreateStatusBar(1, 0)

self.__set_properties()
self.__do_layout()
# end wxGlade

def __set_properties(self):
# begin wxGlade: MyFrame.__set_properties
self.SetTitle(_("Test"))
self.SetSize((600, 450))
self.frame_1_statusbar.SetStatusWidths([-1])
# statusbar fields
frame_1_statusbar_fields = [_("Test Application")]
for i in range(len(frame_1_statusbar_fields)):

self.frame_1_statusbar.SetStatusText(frame_1_statusbar_fields[i], i)
# end wxGlade

def __do_layout(self):
# begin wxGlade: MyFrame.__do_layout
sizer_1 = wx.BoxSizer(wx.VERTICAL)
sizer_1.Add(self.panel_1, 1, wx.EXPAND, 0)
self.SetAutoLayout(True)
self.SetSizer(sizer_1)
self.Layout()
# end wxGlade

# end of class MyFrame


class MyApp(wx.App):
def OnInit(self):
wx.InitAllImageHandlers()
frame_1 = MyFrame(None, -1, "")
self.SetTopWindow(frame_1)
frame_1.Show()
return 1

# end of class MyApp

if __name__ == "__main__":
import gettext
gettext.install("app") # replace with the appropriate catalog name

app = MyApp(0)
app.MainLoop()
[/code]

If I click on any of the items of the File Menu, say I click on "Open
config File", I want a new windows to come up.

My questions is when I create a new Frame/Windows in wxGlade, will it
be wxFrame or wxMDI Frame..which one should I choose and why ?

I am not completely aware of all the small tools that wxGlade gives and
how to place them.


Any kind of help is greatly appreciated.

Thanks



> Without having time to go into a full, the way to proceed with Glade
> (unless I am mistaken) is to design each window independently of the
> others, and to use a button press in one window to create an instance of
> another type of window.

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Re: GUI in Python using wxGlade

[diffuser78]

I am a newbie. I was looking for some code where I could a list of
different items from a file and display it in a list box. Then give a
user the capability to select some.

Basically, reading and writing to a file and displaying them in
different widgets...thats something I am looking for. If anybody can
point me to some good example tutorials...I will be greatly helped.

Thanks,

Every help is appreciated

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Re: GUI in Python using wxGlade

[diffuser78]

Did you paste any code ?

Also the link for the next message is not working .


John Salerno wrote:
> [EMAIL PROTECTED] wrote:
> > I am a newbie. I was looking for some code where I could a list of
> > different items from a file and display it in a list box. Then give a
> > user the capability to select some.
> >
> > Basically, reading and writing to a file and displaying them in
> > different widgets...thats something I am looking for. If anybody can
> > point me to some good example tutorials...I will be greatly helped.
> >
> > Thanks,
> >
> > Every help is appreciated
> >
>
> Have you tried looking at the code in the wxPython demo? In the ListBox
> control demo, it populates a ListBox with items from a list, but you
> could easily translate that into reading from a file, I think. Here's
> the full code in case you don't have the demo:
>
>
> >
> > import  wx
> >
> > #---
> >
> > # This listbox subclass lets you type the starting letters of what you want 
> > to
> > # select, and scrolls the list to the match if it is found.
> > class FindPrefixListBox(wx.ListBox):
> > def __init__(self, parent, id, pos=wx.DefaultPosition, 
> > size=wx.DefaultSize,
> >  choices=[], style=0, validator=wx.DefaultValidator):
> > wx.ListBox.__init__(self, parent, id, pos, size, choices, style, 
> > validator)
> > self.typedText = ''
> > self.log = parent.log
> > self.Bind(wx.EVT_KEY_DOWN, self.OnKey)
> >
> >
> > def FindPrefix(self, prefix):
> > self.log.WriteText('Looking for prefix: %s\n' % prefix)
> >
> > if prefix:
> > prefix = prefix.lower()
> > length = len(prefix)
> >
> > # Changed in 2.5 because ListBox.Number() is no longer 
> > supported.
> > # ListBox.GetCount() is now the appropriate way to go.
> > for x in range(self.GetCount()):
> > text = self.GetString(x)
> > text = text.lower()
> >
> > if text[:length] == prefix:
> > self.log.WriteText('Prefix %s is found.\n' % prefix)
> > return x
> >
> > self.log.WriteText('Prefix %s is not found.\n' % prefix)
> > return -1
> >
> >
> > def OnKey(self, evt):
> > key = evt.GetKeyCode()
> >
> > if key >= 32 and key <= 127:
> > self.typedText = self.typedText + chr(key)
> > item = self.FindPrefix(self.typedText)
> >
> > if item != -1:
> > self.SetSelection(item)
> >
> > elif key == wx.WXK_BACK:   # backspace removes one character and 
> > backs up
> > self.typedText = self.typedText[:-1]
> >
> > if not self.typedText:
> > self.SetSelection(0)
> > else:
> > item = self.FindPrefix(self.typedText)
> >
> > if item != -1:
> > self.SetSelection(item)
> > else:
> > self.typedText = ''
> > evt.Skip()
> >
> > def OnKeyDown(self, evt):
> > pass
> >
> >
> > #---
> >
> > class TestListBox(wx.Panel):
> > def __init__(self, parent, log):
> > self.log = log
> > wx.Panel.__init__(self, parent, -1)
> >
> > sampleList = ['zero', 'one', 'two', 'three', 'four', 'five',
> >   'six', 'seven', 'eight', 'nine', 'ten', 'eleven',
> >   'twelve', 'thirteen', 'fourteen']
> >
> > wx.StaticText(self, -1, "This example uses the wx.ListBox 
> > control.", (45, 10))
> > wx.StaticText(self, -1, "Select one:", (15, 50))
> > self.lb1 = wx.ListBox(self, 60, (100, 50), (90, 120), sampleList, 
> > wx.LB_SINGLE)
> > self.Bind(wx.EVT_LISTBOX, self.EvtListBox, self.lb1)
> > self.Bind(wx.EVT_LISTBOX_DCLICK, self.EvtListBoxDClick, self.lb1)
> > self.lb1.Bind(wx.EVT_RIGHT_UP, self.EvtRightButton)
> > self.lb1.SetSelection(3)
> > self.lb1.Append("with data", "This one has data");
> > self.lb1.SetClientData(2, "This one has data");
> >
> >
> > wx.StaticText(self, -1, "Select many:", (220, 50))
> > self.lb2 = wx.ListBox(self, 70, (320, 50), (90, 120), sampleList, 
> > wx.LB_EXTENDED)
> > self.Bind(wx.EVT_LISTBOX, self.EvtMultiListBox, self.lb2)
> > self.lb2.Bind(wx.EVT_RIGHT_UP, self.EvtRightButton)
> > self.lb2.SetSelection(0)
> >
> > sampleList = sampleList + ['test a', 'test aa', 'test aab',
> >'test ab', 'test abc', 'test abcc',
> >'test abcd' ]
> > sampleList.sort()
> > wx.StaticText(self, -1, "Find Prefix:", (15, 250))
> > fp = FindPrefixListBox(self, -1, (100, 250), (90, 120), sampleList, 
> > wx.LB_SINGLE)
> > fp.SetSelection(0)

wxPython question

[diffuser78]

I tried to follow wxPython Demo examples to understand it better. I
used wxGlade to generate my code from the GUI builder.

When I try to see the code for Menu and Menubar I see a little mismatch
in the way functions are being used.

For example, wxGlade produces code like this

self.Action = wx.Menu()
self.AddComputer = wx.MenuItem(self.Action, wx.NewId(), _("Add
Computer"), "",wx.ITEM_NORMAL)
self.Action.AppendItem(self.AddComputer)
## Code end

and in the demo it is gives as

self.Action = wx.Menu()
Action.append(201, "Add Computer")
# Code end

Can somebody please explain this discrepancy ?

Thanks, every help is appreciated.

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wxPython GUI designer

[diffuser78]

I am newbie learning wxPython. I tried using GUI designer called
wxGlade. When it generated code I couldnt get the same level of
flexibility as writing the code by oneself.

Any view on what you think about using GUI designer tools.

Every help is appreciated.

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Re: wxPython GUI designer

[diffuser78]

Are there any good commercial project built with wx ? I am a newbie and
a have to write a small application in Python. I was wondering which
optin would be best for me in terms of least learning curve and getting
the final product ASAP.

Thanks

DH wrote:

> In my opinion none of the wx* or gtk* related designer tools are
> any good.  QT Designer (which can be used with pyqt) is excellent,
> however, you probably would only want to use that if you are
> developing non-commercial software or else can afford a commercial
> license from Trolltech.  For wx and gtk projects, I usually just write
> the gui by hand like you have already been doing.

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OS specific command in Python

[diffuser78]

I want to write a python program and call OS specific commands in it.
So basically, instead of typing in on the command line argument I want
to have it in a python program and let it do the action.

for example. in my program I would want to call the ssh feature like
one does on the command line

ssh [EMAIL PROTECTED]  .etc

How can I do this easily ?

Every help is appreciated.

Thanks

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Re: OS specific command in Python

[diffuser78]

When you connect (via ssh or telnet) to a remote machine, you need to
> type (manually)
> your username and your password. Programming that is never easy.

I have setup the public keys to AUTO LOGIN so that it doesn't ask the
password.

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Re: OS specific command in Python

[diffuser78]

I tried the following and it seemed to work

import os
os.system('')

Any comments

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Re: OS specific command in Python

[diffuser78]

I have a question on getpass. Since I am a newbie you might find it a
little dumb.

By using the getpass, are u trying to retrieve the username and
password of remote mahcine or local ?



Avell Diroll wrote:
> [EMAIL PROTECTED] wrote:
> > When you connect (via ssh or telnet) to a remote machine, you need to
> > type (manually)
> > your username and your password. Programming that is never easy.
> >
>
> This is really eased by the module getpass (std library) :
>
> ###
>
> import getpass
>
> login = getpass.getuser()
> password = getpass.getpass()
>
> ###
>
> If the username is different from your system login this can be changed to :
>
> ###
>
> import getpass
>
> login = raw_input('login: ')
> password = getpass.getpass()
> 
> ###
> 
> 
> Python definitely comes with batteries included !

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Re: OS specific command in Python

[diffuser78]

Hi Avell,

I want to communicate using subprocess module but my task is a little
different. May be you can guide me.

I have a linux box, from where I remotely execute all the commands. The
remote machine is windows machine. I installed an OpenSSH server for
windows to send the shutdown command. I setup the public keys in such a
way that I could login to SSH server without using password.

I used

import os
os.system('ssh [EMAIL PROTECTED] shutdown -s')


I was wondering how can I interact with an application . Since you
mentioned about subprocess module, I want a ability that my PYthon
script can actually interact with the windows box and launch and close
application there remotely.

Any suggestions on how to do this ?

Every help is appreciated.

Thanks for your time

Avell Diroll wrote:

> This is an simple way to proceed if you don't need your python script to
> know what happens to the launched process ...
> When you need to :
> * send some input to the command from the python script after it is launched
> * get the output of the command in your python script
> * get the pid associated to your command
> * wait for your command to finish
> * pipe some shell commands
> * ...
> you should use the subprocess module.
>
> Here is a quick example from the Python Reference Library :
> http://docs.python.org/lib/node242.html
>
> ##Shell Script :
> output=`dmesg | grep hda`
>
>
> ##Python Script :
> from subprocess import Popen
> p1 = Popen(["dmesg"], stdout=PIPE)
> p2 = Popen(["grep", "hda"], stdin=p1.stdout, stdout=PIPE)
> output = p2.communicate()[0]

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Remote Boot Manager Scripting (Python)

[diffuser78]

I just started to write a small project in Python. I was wondering if
there can be something like remote boot manager.

I have to remotely start a computer. It has dual boot (WinXP and
Linux).
My remote computer is Linux which will send command to remotely boot
the other computer.

Can we write python script or some utility which would let us select
the Operating System to boot ? For example If we send parameter "WIN"
it boots into Windows and if we send "NIX" it boots into Linux.

Every help is appreciated.

Thanks

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Network Programming in Python

[diffuser78]

I am a newbie in python. I want to learn and implement a small
networking concept. Please help me. Every help is appreciated.

I have one Linux Box and one Windows PC. I want to have a daemon
running on Windows PC which listens on some specicif port number. I
want to send a TCP/IP or UDP/IP packet from Linux box to Windows PC to
start some application. As Windows PC recieves such a packet from Linux
Box it executes a certain .exe file. I want to implement this concept.

In short I want to remotely send command from Linux to Windows PC to
start a particular application.

Thanks, Every help is appreciated.

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Re: Network Programming in Python

[diffuser78]

Thanks...I will read that up...could you give me some more headstart or
if you any sample code which I can study.

Thanks for your help, every help is appreciated


Fredrik Lundh wrote:
> [EMAIL PROTECTED] wrote:
>
> > I am a newbie in python. I want to learn and implement a small
> > networking concept. Please help me. Every help is appreciated.
> >
> > I have one Linux Box and one Windows PC. I want to have a daemon
> > running on Windows PC which listens on some specicif port number. I
> > want to send a TCP/IP or UDP/IP packet from Linux box to Windows PC to
> > start some application. As Windows PC recieves such a packet from Linux
> > Box it executes a certain .exe file. I want to implement this concept.
> >
> > In short I want to remotely send command from Linux to Windows PC to
> > start a particular application.
>
> server:
>
>  http://docs.python.org/lib/module-SimpleXMLRPCServer.html
>
> client:
> 
>  http://docs.python.org/lib/module-xmlrpclib.html
> 
> 

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Re: Network Programming in Python

[diffuser78]

I have Python 2.4.2 on windows and Linux both. I got an import error.
how can we obtain the twisted libraries ?



When I try to run your code
Jean-Paul Calderone wrote:
> On 22 Jun 2006 12:02:14 -0700, [EMAIL PROTECTED] wrote:
> >I am a newbie in python. I want to learn and implement a small
> >networking concept. Please help me. Every help is appreciated.
> >
> >I have one Linux Box and one Windows PC. I want to have a daemon
> >running on Windows PC which listens on some specicif port number. I
> >want to send a TCP/IP or UDP/IP packet from Linux box to Windows PC to
> >start some application. As Windows PC recieves such a packet from Linux
> >Box it executes a certain .exe file. I want to implement this concept.
> >
> >In short I want to remotely send command from Linux to Windows PC to
> >start a particular application.
> >
> >Thanks, Every help is appreciated.
> >
>
> Untested:
>
> from twisted.internet import protocol, reactor
> from twisted.protocols import basic
>
> COMMANDS = {
> "xterm": ("/usr/bin/xterm", {"DISPLAY": ":1.0"}),
> }
>
> class CommandLauncher(basic.LineReceiver):
> def lineReceived(self, line):
> try:
> cmd, env = COMMANDS[line]
> except KeyError:
> self.sendLine("error")
> else:
> reactor.spawnProcess(None, cmd, env=env)
> self.sendLine("okay")
>
> f = protocol.ServerFactory()
> f.protocol = CommandLauncher
> reactor.listenTCP(12345, f)
> reactor.run()
>
> You should be able to telnet to this (port 12345) and type in
> names of commands for it to run.  Of course, xterm isn't a very
> good win32 program to run but I couldn't think of a better example.
> You could also write a program to send command requests to this
> server, instead of using telnet.
> 
> Jean-Paul

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Re: Network Programming in Python

[diffuser78]

I got it ...initially sourceforge page linked all old libraries..later
then got this link to twistedmatrix. Thanks.
Bruno Desthuilliers wrote:
> [EMAIL PROTECTED] a écrit :
> > I have Python 2.4.2 on windows and Linux both. I got an import error.
> > how can we obtain the twisted libraries ?
> 
> Is google down ?

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Re: Network Programming in Python

[diffuser78]

I just realized that you are the author of Pyro. Will it be of any help
to me ??

Irmen de Jong wrote:
> [EMAIL PROTECTED] wrote:
> >
> > Really, was that so hard?
> >
> > Python makes sockets a total breeze. You can write an 80's style HTTP
> > server in less than a page of code.
>
> But making a *good* 80's style http/socket server is a lot of work.
> Better pick one of the high level protocols built on top of it,
> to shield you from the gory details of raw socket programming.
> 
> --Irmen

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Re: Network Programming in Python

[diffuser78]

How will Pyon help my cause ?

Bill Maxwell wrote:
> On 22 Jun 2006 12:02:14 -0700, [EMAIL PROTECTED] wrote:
>
> >I am a newbie in python. I want to learn and implement a small
> >networking concept. Please help me. Every help is appreciated.
> >
> >I have one Linux Box and one Windows PC. I want to have a daemon
> >running on Windows PC which listens on some specicif port number. I
> >want to send a TCP/IP or UDP/IP packet from Linux box to Windows PC to
> >start some application. As Windows PC recieves such a packet from Linux
> >Box it executes a certain .exe file. I want to implement this concept.
> >
> >In short I want to remotely send command from Linux to Windows PC to
> >start a particular application.
>
>
> Have you checked out Pyro (Python Remote Objects)?
> 
>   http://pyro.sourceforge.net/
> 
> Bill

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Re: Python taught in schools?

[diffuser78]

I think there is a Python club at UCF, Orlandomight help you
indirectly.

MilkmanDan wrote:
> I'll be a college freshman this fall, attending Florida Institute of
> Tech studying electrical engineering.
>
> I was considering taking some classes in programming and computer
> science, and I happened to notice that everything taught is using C++.
> After further research, it seems to me that C++ seems to be the
> dominating language in universities.
>
> By comparison, our local community college teaches a few classes in VB,
> Java, Javascript, C++, and for some reason, PASCAL.
>
> I'm certianly not against any of this, but out of curiousity does
> anyone know of a school that teaches Python?

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Re: Python taught in schools?

[diffuser78]

I replied to a wrong post. My bad.I know for sure that there is
some kinda Python Club at UCF Orlando. There is Prof called Michael
Johnson who teaches Physics gives you an intro to Python.

http://www.physics.ucf.edu/~mdj/MinimalPython.html

Good Luck

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file writing question

[diffuser78]

Hi, I am a newbie so not very confident in file handling.

I want to write to a file atrributes in this fashion
#NameOfComputer:MAC_Address:IP_Address

--computer_details.txt
begins-
IG1:8f00142a123c:192.168.2.101
IG2:8f00142a124d:192.168.2.102
IG3:8f00142a124e:192.168.2.103
IG4:8f00142a124f:192.168.2.104
IG5:8f00142a124a:192.168.2.105
IG6:8f00142a124b:192.168.2.106
--computer_details.txt
ends---

While writing this file I insert "\n" after every line so that details
of every new computer goes into next line for readibility.


After I have to read this file. While reading this file "\n" remains
which I dont want.

Is there a neat way of writing to a file and not having "\n" ?

Please help

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Re: file writing question

[diffuser78]

Thanks BrunoThis helps me.

Bruno Desthuilliers wrote:
> [EMAIL PROTECTED] wrote:
> > Hi, I am a newbie so not very confident in file handling.
> >
> > I want to write to a file atrributes in this fashion
> > #NameOfComputer:MAC_Address:IP_Address
> >
> > --computer_details.txt
> > begins-
> > IG1:8f00142a123c:192.168.2.101
> > IG2:8f00142a124d:192.168.2.102
> > IG3:8f00142a124e:192.168.2.103
> > IG4:8f00142a124f:192.168.2.104
> > IG5:8f00142a124a:192.168.2.105
> > IG6:8f00142a124b:192.168.2.106
> > --computer_details.txt
> > ends---
> >
> > While writing this file I insert "\n" after every line so that details
> > of every new computer goes into next line for readibility.
> >
> >
> > After I have to read this file. While reading this file "\n" remains
> > which I dont want.
>
> Then strip it:
>
> for line in open('computer_details.txt'):
>name, mac, ip = line.strip().split(':')
># ...
>
> > Is there a neat way of writing to a file and not having "\n" ?
>
> Yes : don't add the newline after every line. But note that this may
> make the file a bit more difficult to read and parse for both your
> program and you !-)
>
> Also, may I suggest that you read the doc for the CSV module ?
>
>
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in '[EMAIL PROTECTED]'.split('@')])"

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String Question

[diffuser78]

mac_string = '001485e55503'  (This is the mac address of a computer.)

I am using wake on LAN python script to start computer remote.It uses
format like this 

s.sendto('\xff'*6 + '\x00\x014\x85\xe5\x55\x03'*16, ('192.168.1.255',
80))

where '\x00\x14\x85\xe5\x55\x03' is the MAC address to be used.


What I do is break the string into 6 parts like this,

str01=mac_string[0:2]
str02=mac_string[2:4]
str03=mac_string[4:6]
str04=mac_string[6:8]
str05=mac_string[8:10]
str06=mac_string[10:12]

and if I use it like this

s.sendto('\xff'*6 + '\xstr01\xstr02\xstr03\xstr04\xstr05\xstr06'*16,
('192.168.1.255', 80))
I get an error


I also tried like this
s.sendto('\xff'*6 + 'mac_string'*16, ('192.168.1.255', 80))

Thiis also didnt work.


Since the MAC adddress are hexadecimal, how should I go about it here.

Please help, every help is appreciated. Thanks

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Re: String Question

[diffuser78]

Many Thanks!! It worked like a charm.

Fredrik Lundh wrote:
> [EMAIL PROTECTED] wrote:
>
> > mac_string = '001485e55503'  (This is the mac address of a computer.)
> >
> > I am using wake on LAN python script to start computer remote.It uses
> > format like this 
> >
> > s.sendto('\xff'*6 + '\x00\x014\x85\xe5\x55\x03'*16, ('192.168.1.255',
> > 80))
> >
> > where '\x00\x14\x85\xe5\x55\x03' is the MAC address to be used.
>
> s.sendto('\xff'*6 + binascii.unhexlify(mac_string) *16, ('192.168.1.255', 
> 80))
> 
> 

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Re: String Question

[diffuser78]

I will try this one too...thanks for your response.
Iain King wrote:
> [EMAIL PROTECTED] wrote:
> > mac_string = '001485e55503'  (This is the mac address of a computer.)
> >
> > I am using wake on LAN python script to start computer remote.It uses
> > format like this 
> >
> > s.sendto('\xff'*6 + '\x00\x014\x85\xe5\x55\x03'*16, ('192.168.1.255',
> > 80))
> >
> > where '\x00\x14\x85\xe5\x55\x03' is the MAC address to be used.
> >
> >
> > What I do is break the string into 6 parts like this,
> >
> > str01=mac_string[0:2]
> > str02=mac_string[2:4]
> > str03=mac_string[4:6]
> > str04=mac_string[6:8]
> > str05=mac_string[8:10]
> > str06=mac_string[10:12]
> >
> > and if I use it like this
> >
> > s.sendto('\xff'*6 + '\xstr01\xstr02\xstr03\xstr04\xstr05\xstr06'*16,
> > ('192.168.1.255', 80))
> > I get an error
> >
> >
> > I also tried like this
> > s.sendto('\xff'*6 + 'mac_string'*16, ('192.168.1.255', 80))
> >
> > Thiis also didnt work.
> >
> >
> > Since the MAC adddress are hexadecimal, how should I go about it here.
> >
> > Please help, every help is appreciated. Thanks
>
> See http://docs.python.org/lib/typesseq-strings.html
>
> You probably want:
>
> s.sendto('\xff'*6 + ('\x%s\x%s\x%s\x%s\x%s\x%s' % (str01, str02, str03,
>  sttr04, str05, str06))*16, ('192.168.1.255', 80))
> 
> Iain

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Re: efficiency question

[diffuser78]

So nice to know this that you can compare your own code using this
methodology. I was completely unaware of this. Thank you so much.



Fredrik Lundh wrote:
> David Harvey wrote:
>
> > Suppose I write
> >
> > if x in ("abc", "def", "xyz"):
> > doStuff()
> >
> > elif x in ("pqr", "tuv", "123"):
> > doOtherStuff()
> >
> > elif ...
> > When is python building the tuples? Does it need to build the tuple
> > every time it comes through this code? Or does it somehow recognise
> > that they are constant and cache them?
>
> when in doubt, ask the compiler:
>
> def code(x):
> if x in ("abc", "def", "xyz"):
> doStuff()
> elif x in ("pqr", "tuv", "123"):
> doOtherStuff()
>
> import dis
> dis.dis(code)
>
> prints:
>
>   2   0 LOAD_FAST0 (x)
>   3 LOAD_CONST   7 (('abc', 'def', 'xyz'))
>   6 COMPARE_OP   6 (in)
>   9 JUMP_IF_FALSE   11 (to 23)
>  12 POP_TOP
>
>   3  13 LOAD_GLOBAL  1 (doStuff)
>  16 CALL_FUNCTION0
>  19 POP_TOP
>  20 JUMP_FORWARD25 (to 48)
> >>   23 POP_TOP
>
>   4  24 LOAD_FAST0 (x)
>  27 LOAD_CONST   8 (('pqr', 'tuv', '123'))
>  30 COMPARE_OP   6 (in)
>  33 JUMP_IF_FALSE   11 (to 47)
>  36 POP_TOP
>
>   5  37 LOAD_GLOBAL  2 (doOtherStuff)
>  40 CALL_FUNCTION0
>  43 POP_TOP
>  44 JUMP_FORWARD 1 (to 48)
> >>   47 POP_TOP
> >>   48 LOAD_CONST   0 (None)
>  51 RETURN_VALUE
>
> so the answer is "yes, in this specific case".
>
> > (The tuples I have in mind are of course much longer than three
> > elements)
>
> in that case, you should probably use pre-calculated sets instead of tuples.
> 
> 

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Re: Py2exe make wxPython window looks bad

[diffuser78]

My question is not exactly related. In windows you create exe using
py2exe.

What is the Linux equivalent of it ? I am assuming you just make your
.py file executable by doint this. Please correct me if I am wrong.
***
chmoad a+c file_name.py
***


I recently wrote a small app using wxPython. It is meant to be run on
Windows and Linux both. In Windows I have created the exe as given in
py2exe.org.

What do I need to do in Linux if I need to distribute to people using
Linux who don't have all the dependent libraries installed in their
Linux distro ??

Every help is appreciated.

Thanks





zdp wrote:
> Dear all:
>
> I made a window program by wxPython. Split windows, treectrl, listctrl
> and textctrl are used. When I program in python, the look & feel of the
> window controls are like the windos XP look & feel, with thin and flat
> border (My os is window XP). It's natural because, as I know,  wxPython
> use native look and feel.
>
> But when I convert the program to EXE file by Py2exe, and run it, the
> look & feel is bad. It's just like the windows 9x. All controls has a
> thick and emboss border. However, the scrollbars look good, same as the
> window XP.
>
> So I'm puzzled. What's the problem and how can I get a XP look & feel
> window program? Should I add some code in my program to set the look
> and feel, or, set some options in py2exe script to force the generated
> exe has specified look and feel?
>
> The setup.py is very simple as following:
>
> -setup.py-
> import sys, os
> from distutils.core import setup
> import py2exe
> import glob
>
> setup( name = "mainframe",
>windows = ["mainframe.py"]
>)

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Re: efficiency question

[diffuser78]

can you please explain how to read these output...I mean how to
understand them.
A quick glance tells you that the latter approach has less number of
instructions and thats why its better. Any more insight would help a
lot.

MTD wrote:
> For the sake of comparison:
>
> >>> def cod(x):
> ...   tupple1 = ("abc", "def", "xyz")
> ...   tupple2 = ("pqr", "tuv", "123")
> ...   if x in tupple1:
> ...   doStuff()
> ...   elif x in tupple2:
> ...   doOtherStuff()
> ...
> >>> dis.dis(cod)
>   2   0 LOAD_CONST   7 (('abc', 'def', 'xyz'))
>   3 STORE_FAST   2 (tupple1)
>
>   3   6 LOAD_CONST   8 (('pqr', 'tuv', '123'))
>   9 STORE_FAST   1 (tupple2)
>
>   4  12 LOAD_FAST0 (x)
>  15 LOAD_FAST2 (tupple1)
>  18 COMPARE_OP   6 (in)
>  21 JUMP_IF_FALSE   11 (to 35)
>  24 POP_TOP
>
>   5  25 LOAD_GLOBAL  3 (doStuff)
>  28 CALL_FUNCTION0
>  31 POP_TOP
>  32 JUMP_FORWARD25 (to 60)
> >>   35 POP_TOP
>
>   6  36 LOAD_FAST0 (x)
>  39 LOAD_FAST1 (tupple2)
>  42 COMPARE_OP   6 (in)
>  45 JUMP_IF_FALSE   11 (to 59)
>  48 POP_TOP
>
>   7  49 LOAD_GLOBAL  4 (doOtherStuff)
>  52 CALL_FUNCTION0
>  55 POP_TOP
>  56 JUMP_FORWARD 1 (to 60)
> >>   59 POP_TOP
> >>   60 LOAD_CONST   0 (None)
>  63 RETURN_VALUE

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Re: efficiency question

[diffuser78]

Thanks for this thing.

http://www.python.org/doc/current/lib/module-dis.html made it more
clear.

Fredrik Lundh wrote:
> David Harvey wrote:
>
> > Suppose I write
> >
> > if x in ("abc", "def", "xyz"):
> > doStuff()
> >
> > elif x in ("pqr", "tuv", "123"):
> > doOtherStuff()
> >
> > elif ...
> > When is python building the tuples? Does it need to build the tuple
> > every time it comes through this code? Or does it somehow recognise
> > that they are constant and cache them?
>
> when in doubt, ask the compiler:
>
> def code(x):
> if x in ("abc", "def", "xyz"):
> doStuff()
> elif x in ("pqr", "tuv", "123"):
> doOtherStuff()
>
> import dis
> dis.dis(code)
>
> prints:
>
>   2   0 LOAD_FAST0 (x)
>   3 LOAD_CONST   7 (('abc', 'def', 'xyz'))
>   6 COMPARE_OP   6 (in)
>   9 JUMP_IF_FALSE   11 (to 23)
>  12 POP_TOP
>
>   3  13 LOAD_GLOBAL  1 (doStuff)
>  16 CALL_FUNCTION0
>  19 POP_TOP
>  20 JUMP_FORWARD25 (to 48)
> >>   23 POP_TOP
>
>   4  24 LOAD_FAST0 (x)
>  27 LOAD_CONST   8 (('pqr', 'tuv', '123'))
>  30 COMPARE_OP   6 (in)
>  33 JUMP_IF_FALSE   11 (to 47)
>  36 POP_TOP
>
>   5  37 LOAD_GLOBAL  2 (doOtherStuff)
>  40 CALL_FUNCTION0
>  43 POP_TOP
>  44 JUMP_FORWARD 1 (to 48)
> >>   47 POP_TOP
> >>   48 LOAD_CONST   0 (None)
>  51 RETURN_VALUE
>
> so the answer is "yes, in this specific case".
>
> > (The tuples I have in mind are of course much longer than three
> > elements)
>
> in that case, you should probably use pre-calculated sets instead of tuples.
> 
> 

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Client Server Connection Program

[diffuser78]

Hi,

I have the following code for a cline and server which I got from a
small tutorial on the web.

#!/ usr/bin/env python
# tms.py (SERVER)

import socket
import sys

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
host = ''
port = int(sys.argv[1])

s.bind((host,port))
s.listen(1)
conn, addr = s.accept()
print 'client is at', addr

data = conn.recv(100)
data = data * 1000

z = raw_input()
conn.send(data)
conn.close()

AND

#/ usr/bin/env python
# filename: tmc.py (CLIENT)

import socket
import sys

s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

host = int(sys.argv[1])
port = int(sys.argv[2])

s.connect((host,port))
s.send(sys.argv[3])
i = 0
while True:
data = s.recv(100)
i+=1
if (i<5):
print data
if not data:
break
print 'received', len(data), 'bytes'
s.close()


Server is installed on machine 192.168.1.4 and Client is 192.168.1.2


When I start server and the server is listening I start the clinet.

I started Client using 

python tmc.py 192.168.1.4 2000 abcxyz

where 2000 is the port number  and abcxyz is the string I pass to
server, I get the following error...

ValueError: invalid literal for int(): 192.168.1.4

How can I fix this ? I am trying to achieve the most basic level of
networking between a client and a server.

Every help is appreciated.

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Re: Client Server Connection Program

[diffuser78]

removing int frrom host = int(sys.argv[1])  fixed the problem. Thanks
Fred!!!

Fredrik Lundh wrote:
> [EMAIL PROTECTED] wrote:
>
> > #/ usr/bin/env python
> > # filename: tmc.py (CLIENT)
> >
> > import socket
> > import sys
> >
> > s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
> >
> > host = int(sys.argv[1])
> > port = int(sys.argv[2])
>
> the port number is an integer, but the host name/ip is obviously not an
> integer -- so why are you trying to convert it an integer ?
>
> > s.connect((host,port))
> > s.send(sys.argv[3])
> > i = 0
> > while True:
> > data = s.recv(100)
> > i+=1
> > if (i<5):
> > print data
> > if not data:
> > break
> > print 'received', len(data), 'bytes'
> > s.close()
> >
> >
> > Server is installed on machine 192.168.1.4 and Client is 192.168.1.2
> >
> >
> > When I start server and the server is listening I start the clinet.
> >
> > I started Client using 
> >
> > python tmc.py 192.168.1.4 2000 abcxyz
> >
> > where 2000 is the port number  and abcxyz is the string I pass to
> > server, I get the following error...
> >
> > ValueError: invalid literal for int(): 192.168.1.4
> >
> > How can I fix this ?
>
> by reading the *entire* trackback, and looking at the line it tells you
> to look at, before you post.
> 
> 

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wxPython and Linux dependencies

[diffuser78]

Hi,

I wrote a small app using wxPython on a Linux distro called Ubuntu (it
is a debain derivative). I ran it on windows and it just worked
perfectly. Now, when I am trying to install the same app on a different
Linux Distro (Red Hat Linux) I cannot get it to work. This Red Hat
variant is a customized version of Red Hat of a Company where I work.
It uses python 2.3.4.
I installed wxPython and other dependencies mentioned on
http://www.wxpython.org/download.php

Can somebody give me some pointers to get it working .?

Every help is appreciated.

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Re: wxPython and Linux dependencies

[diffuser78]

Error message "cannot find wx"

infact I have wxpython in /usr/lib/

I installed it using the rpms given on the wxPython website. Do I need
to set some path or something.

Nick Vatamaniuc wrote:
> "cannot get it to work." is pretty broad, you are more likely to get
> help if you post an error message or any other details.
>
> [EMAIL PROTECTED] wrote:
> > Hi,
> >
> > I wrote a small app using wxPython on a Linux distro called Ubuntu (it
> > is a debain derivative). I ran it on windows and it just worked
> > perfectly. Now, when I am trying to install the same app on a different
> > Linux Distro (Red Hat Linux) I cannot get it to work. This Red Hat
> > variant is a customized version of Red Hat of a Company where I work.
> > It uses python 2.3.4.
> > I installed wxPython and other dependencies mentioned on
> > http://www.wxpython.org/download.php
> >
> > Can somebody give me some pointers to get it working .?
> > 
> > Every help is appreciated.

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Re: wxPython and Linux dependencies

[diffuser78]

How can we find that it is not using the right version of Python ?

John Salerno wrote:
> [EMAIL PROTECTED] wrote:
> > Error message "cannot find wx"
> >
> > infact I have wxpython in /usr/lib/
> >
> > I installed it using the rpms given on the wxPython website. Do I need
> > to set some path or something.
>
> Could it be that it is trying to use another, pre-installed version of
> Python -- one which doesn't have wxPython installed with it?

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Re: wxPython and Linux dependencies

[diffuser78]

Let me explain and give you some more details.

When I type "python" at the command prompt it shows the following info.
python 2.3.4 (#Feb 01 2005), GCC 3.4.3 20041212  Red Hat 3.4.3-9.EL4 on
linux2


In /usr/lib/ there are two directories called python 2.3 and python 2.4

In /usr/lib/python2.3/site-packages I could NOT find anything related
to wx and in particular

wx-2.6-gtk2-unicode
wx.pth
wxversion.py
wxversion.pyc


In /usr/lib/python2.4/ there is only one folder called site-packages
and NO other files.

So /usr/lib/python2.4/site-packages/ has only one folder called
"wx-2.6-gtk2-unicode" and a file called " wx.pth" and another file
wx.version.py (and its compiler version wx.version.pyc). wx.pth
contains wx-2.6-gtk2-unicode

So, what my feeling is that I have python 2.3 and wx package is for
2.4. So my installed variant cannot find the wx package.

What is the easiest way from this point on to get my small wxPython app
running ???

Every help is appreciated.



Nick Vatamaniuc wrote:
> John,
> To see where Python is looking for libraries open an interactive Python
> prompt and type
> >>> import sys
> >>> print sys.path
> You will get a list of paths where Python will look for modules. Also
> check to see if you have the PYTHONPATH environment variable set. If
> /usr/lib is not in the path list then Python won't be able to import wx
> from there. To test your wx app, you can append to sys.path the path of
> your wx module then try to import again.
>
> Hope this helps,
> Nick V.
>
>
>
> [EMAIL PROTECTED] wrote:
> > How can we find that it is not using the right version of Python ?
> >
> > John Salerno wrote:
> > > [EMAIL PROTECTED] wrote:
> > > > Error message "cannot find wx"
> > > >
> > > > infact I have wxpython in /usr/lib/
> > > >
> > > > I installed it using the rpms given on the wxPython website. Do I need
> > > > to set some path or something.
> > >
> > > Could it be that it is trying to use another, pre-installed version of
> > > Python -- one which doesn't have wxPython installed with it?

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matplotlib

[diffuser78]

Hi, I am a python newbie. I was looking for a plotting tool and
somebody told me matplotlib. But I couldnt find on google some good
starting tutorial on it.

Can somebody give some quick pointers to start off with matplotlib.

Thanks

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Re: matplotlib

[diffuser78]

This site and webpage in particular doesn't open. I tried that too
before posting my question.

Maciej Dziardziel wrote:
> [EMAIL PROTECTED] wrote:
>
> > Can somebody give some quick pointers to start off with matplotlib.
> >
> > Thanks
>
> http://matplotlib.sourceforge.net/tutorial.html
>
> --
> Maciej "Fiedzia" Dziardziel ([EMAIL PROTECTED])
> 
> If you can read this, you are in phaser range.

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Is python very slow compared to C

[diffuser78]

I have just started to learn python. Some said that its slow. Can
somebody pin point the issue.

Thans

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Re: Is python very slow compared to C

[diffuser78]

Thnaks everybody for their comments. I am an average programmer in C
and wanted to make a hop to python and was just trying to clear my mind
with the confusions. Bit I guess I will go ahead and spend some time
with python and do my next project in python.


thanks for the feedback

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Poisson Distribution (for a newbie)

[diffuser78]

I am simulating an event where users come into the pool randomly
starting at time T=0, i.e. For Example, 2 users came at T= 0 into the
the pool, 3 users came at T= 1 into the the pool, 5 users came at T=2
,..,54 users came at T=45 etc. As cumulative number of users
goes above 1024, we stop the process.

I want to mimic such kind of distribution using poison traffic ( a bell
shaped curve). I looked into wikipedia and some other tutorials but I
wasn't sure how many parameter does the above kind of distribution
would require.

Could somebody put some light on this issue.

PS:: This is not exactly a programming issue but since I was using it
in one of the Python programs, I thought somebody might have used
similar thing in past and could help. Thanks.

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Python Indentation Problems

[diffuser78]

I am a newbie to Python. I am mainly using Eric as the IDE for coding.
Also, using VIM and gedit sometimes.

I had this wierd problem of indentation. My code was 100% right but it
wont run because indentation was not right. I checked time and again
but still no success. I rewrote the code over again in VI and it ran.

Can you please explain whats the trick behind the correct indentation.

Thanks

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Wake on LAN and Shutdown for Windows and Linux

[diffuser78]

I am using 8 computers on a small network. I have one Main computer
which should be able to remotely start other computers. I used Wake on
LAN to start them all.

My Main computer is Linux.

Other 4 are Windows and 3 are Linux.

How can I shutdown Windows box from my Main (Linux) ?

Also, How can I shutdown other Linux terminals from my Main (Linux) ?


Help is appreciated.

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Re: Wake on LAN and Shutdown for Windows and Linux

[diffuser78]

Thanks, In fact I checked that.

I thought that any other literature would help.


David Murmann wrote:
> [EMAIL PROTECTED] schrieb:
> > How can I shutdown Windows box from my Main (Linux) ?
>
> Have you seen this?
>
> http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/360649
>
> it probably won't work on linux (maybe with wine or similar?), but you
> can try to invoke this script on a windows machine somehow...
> 
> have fun, David.

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Re: Wake on LAN and Shutdown for Windows and Linux

[diffuser78]

because you can write scripts in python so easily as compared to other
scripting languages.

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Re: Wake on LAN and Shutdown for Windows and Linux

[diffuser78]

Any help is appreciated

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cross platform libraries

[diffuser78]

I am using python on a linux terminal.

I want to shutdown a remote windows box. I found a script which does
something like this. My question is can we use windows libraries in
linux as follows 

import win32api
import win32con
import win32netcon
import win32security
import win32wnet

def shutdown(parameters):
OTHER CODE HERE

Every help is appreciated.

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Re: cross platform libraries

[diffuser78]

Hi Ravi,

Do you have any idea how to perform such triigers ?
Every help is appreciated.


Ravi Teja wrote:
> No! That's not the way things work. Such code needs to run locally (in
> this case, Windows). You can run this program as a daemon on Windows
> with some nice simple remote interface (Eg: xmlrpc) and send a message
> to trigger the shutdown.

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Re: cross platform libraries

[diffuser78]

I went to this webpage

http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/360649

Isn't it supposed to run on the network and close the connected
machine.

Every help is appreciate,


Dennis Lee Bieber wrote:
> On 4 May 2006 09:57:15 -0700, [EMAIL PROTECTED] declaimed the
> following in comp.lang.python:
>
> > I am using python on a linux terminal.
> >
> > I want to shutdown a remote windows box. I found a script which does
> > something like this. My question is can we use windows libraries in
> > linux as follows 
> >
> > import win32api
> > import win32con
> > import win32netcon
> > import win32security
> > import win32wnet
> >
>   That set... HIGHLY UNLIKELY... They all rely upon having the M$
> kernel DLLs available...
>
>   Now, if the remote box is running a telnet server, you might be able
> to telnet over (logging in as the boxes admin account) and initiate a
> shutdown from it... (I seem to have a "shutdown.exe" on my system).
> --
>   WulfraedDennis Lee Bieber   KD6MOG
>   [EMAIL PROTECTED]   [EMAIL PROTECTED]
>   HTTP://wlfraed.home.netcom.com/
>   (Bestiaria Support Staff:   [EMAIL PROTECTED])
>   HTTP://www.bestiaria.com/

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Re: cross platform libraries

[diffuser78]

Can we have some program in Linux which shuts down the windows computer
remotely.

Every help is appreciated.


Max Erickson wrote:
> [EMAIL PROTECTED] wrote in
> news:[EMAIL PROTECTED]:
>
> > I went to this webpage
> >
> > http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/360649
> >
> > Isn't it supposed to run on the network and close the connected
> > machine.
>
> That code uses the windows libraries on the machine it is run on to
> generate a request to the networked machine to shutdown. The code
> executes locally and sends the request over the network.
>
> > Every help is appreciate,
> >
>
> If you have some way of remotely running programs on the windows
> machine(ssh, telnet, etc.), you might try pstools:
>
> http://www.sysinternals.com/Utilities/PsTools.html
> 
> specifically, psshutdown.
> 
> max

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Memory leak in Python

[diffuser78]

I have a python code which is running on a huge data set. After
starting the program the computer becomes unstable and gets very
diffucult to even open konsole to kill that process. What I am assuming
is that I am running out of memory.

What should I do to make sure that my code runs fine without becoming
unstable. How should I address the memory leak problem if any ? I have
a gig of RAM.

Every help is appreciated.

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Re: Memory leak in Python

[diffuser78]

Its kinda 65o lines of code...not the best idea to paste the code.
[EMAIL PROTECTED] wrote:
> Can you paste an example of the code you're using?

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Re: Memory leak in Python

[diffuser78]

I am using Ubuntu Linux.

My program is a simulation program with four classes and it mimics bit
torrent file sharing systems on 2000 nodes. Now, each node has lot of
attributes and my program kinds of tries to keep tab of everything. As
I mentioned its a simulation program, it starts at time T=0 and goes on
untill all nodes have recieved all parts of the file(BitTorrent
concept). The ending time goes to thousands of seconds. In each sec I
process all the 2000 nodes.

Psuedo Code

Time = 0
while (True){
For all nodes in the system{
Process + computation
}
   Time++
   If (DownloadFinished == True) exit;
}


Dennis Lee Bieber wrote:
> On 8 May 2006 18:15:02 -0700, [EMAIL PROTECTED] declaimed the
> following in comp.lang.python:
>
> > I have a python code which is running on a huge data set. After
> > starting the program the computer becomes unstable and gets very
> > diffucult to even open konsole to kill that process. What I am assuming
> > is that I am running out of memory.
> >
> > What should I do to make sure that my code runs fine without becoming
> > unstable. How should I address the memory leak problem if any ? I have
> > a gig of RAM.
> >
>   Does the memory come back after the process exits?
>
>   You don't show any sample of code or data... Nor do you mention what
> OS/processor is involved.
>
>   Many systems do not return /allocated/ memory to the OS until the
> top-level process exits, even if the memory is "freed" from the
> viewpoint of the process.
> --
>   WulfraedDennis Lee Bieber   KD6MOG
>   [EMAIL PROTECTED]   [EMAIL PROTECTED]
>   HTTP://wlfraed.home.netcom.com/
>   (Bestiaria Support Staff:   [EMAIL PROTECTED])
>   HTTP://www.bestiaria.com/

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Re: Memory leak in Python

[diffuser78]

The amount of data I read in is actually small.

If you see my algorithm above it deals with 2000 nodes and each node
has ot of attributes.

When I close the program my computer becomes stable and performs as
usual. I check the performance in Performance monitor and using "top"
and the total memory is being used and on top of that around half a gig
swap memory is also being used.

Please give some helpful pointers to overcome such memory errors.

I revisited my code to find nothing so obvious which would let this
leak happen. How to kill cross references in the program. I am kinda
newbie and not completely aware of the finetuning such programming
process.

Thanks


bruno at modulix wrote:
> [EMAIL PROTECTED] wrote:
> > I have a python code which is running on a huge data set. After
> > starting the program the computer becomes unstable and gets very
> > diffucult to even open konsole to kill that process. What I am assuming
> > is that I am running out of memory.
> >
> > What should I do to make sure that my code runs fine without becoming
> > unstable. How should I address the memory leak problem if any ? I have
> > a gig of RAM.
> >
> > Every help is appreciated.
>
> Just a hint : if you're trying to load your whole "huge data set" in
> memory, you're in for trouble whatever the language - for an example,
> doing a 'buf = openedFile.read()' on a 100 gig file may not be a good
> idea...
>
>
>
> --
> bruno desthuilliers
> python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
> p in '[EMAIL PROTECTED]'.split('@')])"

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Re: Memory leak in Python

[diffuser78]

Sure, are there any available simulators...since i am modifying some
stuff i thought of creating one of my own. But if you know some
exisiting simlators , those can be of great help to me.

Thanks

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Re: Memory leak in Python

[diffuser78]

With 1024 nodes it runs fine...but takes around4 hours to run on AMD
3100.

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Re: Memory leak in Python

[diffuser78]

I ran simulation for 128 nodes and used the following

oo = gc.get_objects()
print len(oo)

on every time step the number of objects are increasing. For 128 nodes
I had 1058177 objects.

I think I need to revisit the code and remove the referencesbut how
to do that. I am still a newbie coder and every help will be greatly
appreciated.

thanks

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listener program in Python

[diffuser78]

I want to write a simple clinet/server program that does the following.

On Windows, the program listens to the request from linux box

On Linux Box, client program send server a shutdown request and the
program at server i.e windows shuts windows sown,

I basically want to remotely shut down windows from linux and write
such a program in python.

Every help is appreciated.

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Python script for remotely shutting down Windows PC from Linux ?

[diffuser78]

I am a newbie in Python and want your help in writing python script.

I have to remotely shut the windows px from linux box. I run OpenSSH on
windows PC. I remotely connect it from Linux box using


ssh [EMAIL PROTECTED]# connects me fine now without problems
(LOCAL)

Next, I wrote a script that would log me in and also shut the windows
pc down, so I wrote a script

ssh [EMAIL PROTECTED]  # connects me fine now without problems (LOCAL)
shutdown -s# This is a windows command (REMOTE)

Now, when I run this script, it successfully logs me into the windows
box but doesn't run the second part of the script which is to shut down
the windows PC. Can you please tell me why ??

Is there a way using Python script to perform this operation ?

Every help is appreciated.

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Re: Python script for remotely shutting down Windows PC from Linux ?

[diffuser78]

> ssh [EMAIL PROTECTED] shutdown -s

Than indeed workedThanks

 > use the subprocess module or shellutils to execute the above.

I am a python newbie and how easy or difficult it is using the sub
process module and shell utils.

Thanks,

I really appreciate your help.

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python debugging question

[diffuser78]

I am a python newbie. I have writen some 500 lines of code. There are 4
classes and in all 5 files.

Now, I am trying to run the program. I am getting wrong values for the
simulation results.
Is there any debugging facilities in python which would let me go step
by step and check the values of the variables at every step. I have
done something like this in MS Visual Stdio 6.0 sometime back.

For python, I am using SPE.

what is a good way of debugging such large and iterative programs ? Any
tips.

Every help is appreciated.

Thanks

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Python and C

[diffuser78]

I was a C Programmer for a while. Lately started to learn Python for
one small project at school. I joined a small company where they use
C++ for development.

Can we use Python and C together ? I mean create some classes in Python
and some number crunching algorithms coded in C (for speed) and
integreate both of them.

Could somebody just show a real small example or give pointers to the
same.

Thanks

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python question about classes

[diffuser78]

I have following two classes
Code:

## file_A.py
class A(object):
## a contains is instances of A
a= [ ] def __init__(self, node):
self.nodes_in_A = []
self.nodes_in_A.append(node) packet_queue = [ ] ...etc

## file_B.py
import A
class B(object):
## n contains instances of B
n = [ ] def some_func(self):
_len = len (A.A.a[0].packet_queue)


I get an error AttributeError: 'A' object has no attribute
'packet_queue'


Can you please explain me ...why ? and How to fix this ?

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GUI in python

[diffuser78]

Hi,

I am a python newbie and have used it for about a month. I want to make
a simple GUI app in Python ( I take input form user and do processing
and show results).

Which gui package is good for me. I need to do it quick and I would not
want a long learning curve.

I was taking look at wxPython, pyGTK etc.


Please suggest me the most simplest and easiest one as I dont need
super cool aesthetics just a plain simple GUI app.

Thanks

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how to comment lot of lines in python

[diffuser78]

Like in C we comment like
/*
Bunch of lines of code
*/

Should we use docstring """ """

Or there is something else too ??

Every help is appreciated.

Thanks

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specialized GUI

[diffuser78]

I am new to python. I got  a new project where I have to create a GUI
and
attch my code to it.

The GUI should look like  vsTASKER  www.virtualsim.com

I mean GUI lets user create diagram, and my code should read that
diagram and run the algorithm.

Do you know any other tool like this where I can integrate my code
with.

Every help is appreciated

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how to convert string

[diffuser78]

I want to print number 0 to 9 in one line like this
0 1 2 3 4 5 6 7 8 9

if I do like this, it prints in different lines

for i in xrange(10):
print i

so i tried like this

str = ""
for i in xrange(10):
str = i + " "
print str

but i want to know how convert int i to string.

Every help is appreciate.

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GUI issues in Python

[diffuser78]

Hi,

I want to create a GUI where a user can select drag and drop kind of
boxes, circles and make connections between them.

This is basically for depicting states and dependencies. I am writing a
program where I let the user input states and dependencies in a certain
domain. Based on input given by user in the GUI, I grab it and run my
algorithm to generate the output.

I am wondering if there is any library like that in Python, or if
anybody of you has done something similar in past, could you post some
pointers.

thanks

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Re: GUI issues in Python

[diffuser78]

My question basically revolves around... that I dont want to draw
circles and boxes for drawing purposes.

I want the end user to be able to draw the GUI boxes and circles and
makes connection to depict states and dependencies. So its a little
unconventional and more like a SIMULATION TOOL.

I am pretty sure Python must have something like this. Any idea how to
go about it.

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Re: GUI issues in Python

[diffuser78]

Thanks Daniel, I really think that this should be the solution to my
problem.

A quick Question...is wxPython Operating System dependent or it can be
used with anu OS like Linux, Windows and Mac ?

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wxPython Question

[diffuser78]

I am learning wxPython for one of my projects.

I was wondering if there is drag and  drop in any Python IDE like there
is Visual Basic where you select an object like command_button and put
onto the frame. Is there any help to make life easier in Python.

Every help is greatly appreciated,

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