ANN: ActivePython 2.6.4.10 is now available
I'm happy to announce that ActivePython 2.6.4.10 is now available for download from: http://www.activestate.com/activepython/ This is a minor release with several updates and fixes. Changes in 2.6.4.10 --- - PyPM is now included in 64-bit Windows and Linux builds - Include Distribute instead of setuptools - Include pip - Upgrade to Tcl/Tk 8.5.8 - [Windows] Upgrade to Pywin32 CVS (2009-11-10) - [Windows] Support for OpenSSL in 64-bit - [Windows] Include Tcl/Tk header files - [Windows] Fix broken IDLE on the 64-bit build See the release notes for full details: http://docs.activestate.com/activepython/2.6/relnotes.html#changes What is ActivePython? - ActivePython is ActiveState's binary distribution of Python. Builds for Windows, Mac OS X, Linux are made freely available. Builds for Solaris, HP-UX and AIX, and access to older versions are available with ActivePython Business Edition: http://www.activestate.com/business_edition/ ActivePython includes the Python core and the many core extensions: zlib and bzip2 for data compression, the Berkeley DB (bsddb) and SQLite (sqlite3) database libraries, OpenSSL bindings for HTTPS support, the Tix GUI widgets for Tkinter, ElementTree for XML processing, ctypes (on supported platforms) for low-level library access, and others. The Windows distribution ships with PyWin32 -- a suite of Windows tools developed by Mark Hammond, including bindings to the Win32 API and Windows COM. Beginning with the 2.6.3.7 release, ActivePython includes a binary package manager for Python (PyPM) that can be used to install packages much easily. For example: pypm install pylons See this page for full details: http://docs.activestate.com/activepython/2.6/whatsincluded.html As well, ActivePython ships with a wealth of documentation for both new and experienced Python programmers. In addition to the core Python docs, ActivePython includes the What's New in Python series, Dive into Python, the Python FAQs HOWTOs, and the Python Enhancement Proposals (PEPs). An online version of the docs can be found here: http://docs.activestate.com/activepython/2.6/ We would welcome any and all feedback to: activepython-feedb...@activestate.com Please file bugs against ActivePython at: http://bugs.activestate.com/query.cgi?set_product=ActivePython On what platforms does ActivePython run? ActivePython includes installers for the following platforms: - Windows/x86 - Windows/x64 (aka AMD64) - Mac OS X - Linux/x86 - Linux/x86_64 (aka AMD64) - Solaris/SPARC (Business Edition only) - Solaris/x86 (Business Edition only) - HP-UX/PA-RISC (Business Edition only) - AIX/PowerPC (Business Edition only) - AIX/PowerPC 64-bit (Business Edition only) Custom builds are available in Enterprise Edition: http://www.activestate.com/activepython/enterprise/ Thanks, and enjoy! The Python Team -- Sridhar Ratnakumar sridharr at activestate.com -- http://mail.python.org/mailman/listinfo/python-announce-list Support the Python Software Foundation: http://www.python.org/psf/donations/
pyclutter anyone?
Hi, this is a little bit of a cross-post. I posted to the clutter list, but there's little activity there. I am trying to make sense of pyClutter 1.0. Could anyone point me to an example (or post one) that shows clipping from a path applied to child objects? For example: A star shape that contains a bunch of moving rectangles which will travel/size/rotate with the star, but are clipped to the shape of the star. I suspect this will involve a custom clutter.Group class of some kind, with cogl paths and an on_paint() method, but I can find no headway on the web so far. Hope someone can help! \d -- Fonty Python and Things! -- http://otherwise.relics.co.za/wiki/Software -- http://mail.python.org/mailman/listinfo/python-list
C:\Python25\Lib\IDLELIB\idle.pyw won't start
Hi,
I upgraded from 2.4 to 2.5 and am unable to start an 2.5 idle window.
This is the command I have been using:
C:\Python24\pythonw.exe C:\Python24\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python24\\i')
And this is the command that doesn't start anything:
C:\Python25\pythonw.exe C:\Python25\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python25\\i')
The command is exactly the same with the digit 5 in the place of 4. All
paths and names are correct. C:\\Python25\\i sets up sys.path but seems
irrelevant, as taking the execfile () part out doesn't change anything.
The OS is Windows ME. The download of 2.5 finished with a warning saying
that 2.5 was the highest version for Windows 9* Any tips?
Thanks
Frederic
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Re: Common area of circles
Here is my approach: # input circles, remove duplicates, store them # check whether all circle intersect: if no: print '0.0' if yes: # calculate intersection points of two circles. # check if that point lies in rest all circles if yes: store it as polygon-coordinates (hull) calculate area of curve from the given two points # calculate final area : net area of curve + area of polygon Here is my final code : It's still Buggy (the logic I believe is correct, The implementation is Buggy I guess Code import math def catch_point(x, y): # checks for points which lie inside all the circles # stores all such point in hull kount = True for i in range(n): if (x - circle[i][0])**2 + (y - circle[i][1])**2 - 1.0 0: kount = False if kount == True: hull.append((x, y)) def curve_area(x0, y0, x1, y1, x2, y2): k = math.sqrt((x1 - x2)**2 + (y1 - y2)**2) area_c = math.pi * (math.degrees(math.acos(1.0 - k*k/2.0))/360) #TODO Verify area_t = 0.5 * ( x0*(y1 - y2) - x1*(y0 - y2) + x2*(y0 - y1) ) if area_t 0: area_t = -area_t area = area_c - area_t #print area return area def polygon_area(p): # calculate area of the polygon given the co-ordinates return 0.5 * abs(sum(x0*y1 - x1*y0 for ((x0, y0), (x1, y1)) in segments(p))) def segments(p): return zip(p, p[1:] + [p[0]]) def intersect_circles(l): # check whether all circle intersects or not for i in l: for j in l: if (i[0] - j[0])**2 + (i[1] - j[1])**2 = 4.0: sol = 0.0 return sol break return 1.0 def intersect_coordinates(l): sol = 0.0 # initialisation of final result for i in range(n): for j in range(n): # find all intersecting co-ordinates for each circle xa, xb = circle[i][0], circle[j][0] ya, yb = circle[i][1], circle[j][1] d = math.sqrt((xa - xb)**2 + (ya - yb)**2) if d == 0: continue x1 = 0.5*(xa + xb) + 0.5*(yb - ya)*math.sqrt(4 - d*d) / d y1 = 0.5*(yb + ya) - 0.5*(xb - xa)*math.sqrt(4 - d*d) / d catch_point(x1, y1) # first intersection point x2 = 0.5*(xa + xb) - 0.5*(yb - ya)*math.sqrt(4 - d*d) / d y2 = 0.5*(yb + ya) + 0.5*(xb - xa)*math.sqrt(4 - d*d) / d catch_point(x2, y2) # second intersection point sol += curve_area(circle[i][0], circle[i][1], hull[-1][0], hull[-1][1], hull[-2][0], hull[-2][1]) # add up the value of curves return sol t = int(raw_input())# total no. of test cases for test in range(t): n = int(raw_input())# total no. of circles circle = [] # a blank list which will contain center of circles hull = [] # a blank list which will consist of points on convex polygon for i in range(n): x,y = [float(i) for i in raw_input().split()] circle.append((x,y))# storing the value circle = list(set(circle)) # removing duplicates n = len(circle) # calculating no. of non-duplicate circle sol = intersect_circles(circle) #intersect_circles() check whether all circle intersect if sol == 0.0: # if sol == 0.0 means all circle do not intersect print 0.00# solution = 0.00 in this case elif n == 1:# if only 1 circle present, the solution is PI print %.6f %(math.pi) else: sol = intersect_coordinates(circle)# for rest cases we need to calculate intersection co-ordinates of circle print %.6f %(sol + polygon_area(hull)) # final solution /Code sample output : 4 2 0 0 1 0 1.228370 3 0 0 0 0 0 0 3.141593 3 0 0 0 1 10 12 0.00 3 0 0 1 0 0 1 0.192972 Either there is a redundency or there is some issue with this line : sol += curve_area(circle[i][0], circle[i][1], hull[-1][0], hull[-1][1], hull[-2][0], hull[-2][1]) Still trying to fix it. ~l0nwlf On Fri, Feb 5, 2010 at 11:48 AM, John Nagle na...@animats.com wrote: Chris Rebert wrote: On Thu, Feb 4, 2010 at 2:39 AM, Shashwat Anand anand.shash...@gmail.com wrote: Given 'n' circles and the co-ordinates of their center, and the radius of all being equal i.e. 'one', How can I take out the intersection of their area. How is this at all specific to Python? This also sounds suspiciously like homework, which you should know this list is unlikely to give direct answers to, though you might be able to get a few pointers or some general suggestions. Good point. This is actually a problem in what's called constructive geometry. Usually, this is a 3D problem, for which the term constructive solid geometry, or CSG, is used. That's where to look for algorithms. Yes, there are efficient algorithms and near-exact solutions. The basic idea is that you find all the points at which circles intersect, sort those by one coordinate, and advance across that coordinate, from one
Re: C:\Python25\Lib\IDLELIB\idle.pyw won't start
* Anthra Norell:
Hi,
I upgraded from 2.4 to 2.5 and am unable to start an 2.5 idle window.
This is the command I have been using:
C:\Python24\pythonw.exe C:\Python24\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python24\\i')
And this is the command that doesn't start anything:
C:\Python25\pythonw.exe C:\Python25\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python25\\i')
The command is exactly the same with the digit 5 in the place of 4. All
paths and names are correct. C:\\Python25\\i sets up sys.path but seems
irrelevant, as taking the execfile () part out doesn't change anything.
The OS is Windows ME. The download of 2.5 finished with a warning saying
that 2.5 was the highest version for Windows 9* Any tips?
Don't know, but the '-n' option, is that passed to IDLE?
Perhaps try removing that.
Cheers hth.,
- Alf
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Re: xmlrpc slow in windows 7 if hostnames are used
Yhanks a lot I'll check whether this is the root cause.
Currently my machine could live without IPV6
bye
N
Gabriel Genellina wrote:
En Thu, 04 Feb 2010 19:34:20 -0300, News123 news...@free.fr escribió:
I wrote a small xmlrpc client on Windows 7 with python 2.6
srv = xmlrpclib.Server('http://localhost:80')
I was able to perform about 1 rpc call per second
After changing to
srv = xmlrpclib.Server('http://127.0.0.1:80')
I was able to perform about 10 to 16 rpc calls per second.
So it seems, that under windows 7 the host name lookup occurs for every
RPC call
Not necesarily. There is another difference: 127.0.0.1 is an IPv4
address, localhost maps to both IPv4 and IPv6 addresses (::1)
I vaguely remember a problem with that - IPv6 is tried first, doesn't
work, only then IPv4, and that slows down the whole process.
Try disabling completely the IPv6 stack, if you don't need it.
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Re: Python and Ruby
Robert Kern wrote: On 2010-02-04 14:55 PM, Jonathan Gardner wrote: On Feb 3, 3:39 pm, Steve Holdenst...@holdenweb.com wrote: Robert Kern wrote: On 2010-02-03 15:32 PM, Jonathan Gardner wrote: I can explain all of Python in an hour; I doubt anyone will understand all of Python in an hour. With all respect, talking about a subject without a reasonable chance of your audience understanding the subject afterwards is not explaining. It's just exposition. I agree. If the audience doesn't understand then you haven't explained it. On the contrary, that explanation would have everything you need. It would take an hour to read or listen to the explanation, but much more than that time to truly understand everything that was said. Like I said, that's exposition, not explanation. There is an important distinction between the two words. Simply providing information is not explanation. If it takes four hours for your audience to understand it, then you explained it in four hours no matter when you stopped talking. And if it takes six months? Would you seriously say it took you six months to explain something because it took that long for your audience to understand it? At some point you have to make the transition from person A explaining and person(s) B understanding -- they don't necessarily happen synchronously. As a real-life example, I've read several Python books, tutorials, and this list for quite some time, some of which has very good explanatory material, and yet some of the points I didn't fully comprehend until much, much later. Every time, though, it's still the same reaction: I *love* Python! :D ~Ethan~ -- http://mail.python.org/mailman/listinfo/python-list
Re: Your beloved python features
Julian wrote: Hello, I've asked this question at stackoverflow a few weeks ago, and to make it clear: this should NOT be a copy of the stackoverflow-thread hidden features of Python. I want to design a poster for an open source conference, the local usergroup will have a table there, and in the past years there were some people that came to the python-table just to ask why should I use python?. For those guys would be a poster quite cool which describes the most popular and beloved python features. So, may you help me please? If there's a similar thread/blogpost/ whatever, please give it to me, google couldn't. Regards Julian http://www1.american.edu/academic.depts/cas/econ/faculty/isaac/choose_python.pdf -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrpc slow in windows 7 if hostnames are used
News123 wrote:
Yhanks a lot I'll check whether this is the root cause.
Currently my machine could live without IPV6
bye
N
Gabriel Genellina wrote:
En Thu, 04 Feb 2010 19:34:20 -0300, News123 news...@free.fr escribió:
I wrote a small xmlrpc client on Windows 7 with python 2.6
srv = xmlrpclib.Server('http://localhost:80')
I was able to perform about 1 rpc call per second
After changing to
srv = xmlrpclib.Server('http://127.0.0.1:80')
I was able to perform about 10 to 16 rpc calls per second.
So it seems, that under windows 7 the host name lookup occurs for every
RPC call
Not necesarily. There is another difference: 127.0.0.1 is an IPv4
address, localhost maps to both IPv4 and IPv6 addresses (::1)
I vaguely remember a problem with that - IPv6 is tried first, doesn't
work, only then IPv4, and that slows down the whole process.
Try disabling completely the IPv6 stack, if you don't need it.
Or you can simply use an explicit external address. Most of the time
xmlRPC server/clients are used between distant machines.
If your are using localhost for test purpose, then binding your server
on its external IP instead of the local one could solve your problem
(wihtout removing the IPV6 stack).
import socket
# server
server = SimpleXMLRPCServer((socket.gethostname(), 5000),
logRequests=False, allow_none=True)
# client
xmlrpclib.ServerProxy(http://%s.yourdomain.com:%s; %
(socket.gethostname(), 5000))
JM
PS : please don't top post :o)
PS : just wondering if using the port 80 is legal
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Re: Your beloved python features
On 02/04/10 23:03, Julian wrote: cut For those guys would be a poster quite cool which describes the most popular and beloved python features. That it is ego-orientated programming ;-) http://mail.python.org/pipermail/python-announce-list/2009-April/007419.html -- mph -- http://mail.python.org/mailman/listinfo/python-list
Re: Your beloved python features
Ethan Furman wrote: Julian wrote: Hello, I've asked this question at stackoverflow a few weeks ago, and to make it clear: this should NOT be a copy of the stackoverflow-thread hidden features of Python. I want to design a poster for an open source conference, the local usergroup will have a table there, and in the past years there were some people that came to the python-table just to ask why should I use python?. For those guys would be a poster quite cool which describes the most popular and beloved python features. So, may you help me please? If there's a similar thread/blogpost/ whatever, please give it to me, google couldn't. Regards Julian http://www1.american.edu/academic.depts/cas/econ/faculty/isaac/choose_python.pdf Choose metaclasses if you don’t value your sanity. That remembers me the time when it took me 4 hours to write a ten lines metaclass :o) JM -- http://mail.python.org/mailman/listinfo/python-list
Re: Building a multiline string
@Ulrich: On Feb 4, 1:09 pm, Ulrich Eckhardt eckha...@satorlaser.com wrote: Just for the record: Neither of the below methods actually produce a multiline string. They only spread a string containing one line over multiple lines of source code. I meant: Note - Note: I don't want to use new lines I did not want a multi line string Thanks guys, method 3 seems to be good enough. -- http://mail.python.org/mailman/listinfo/python-list
Re: C:\Python25\Lib\IDLELIB\idle.pyw won't start
Anthra Norell anthra.nor...@bluewin.ch wrote:
Hi,
I upgraded from 2.4 to 2.5 and am unable to start an 2.5 idle
window.
This is the command I have been using:
C:\Python24\pythonw.exe C:\Python24\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python24\\i')
And this is the command that doesn't start anything:
C:\Python25\pythonw.exe C:\Python25\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python25\\i')
The command is exactly the same with the digit 5 in the place of 4.
All paths and names are correct. C:\\Python25\\i sets up sys.path but
seems irrelevant, as taking the execfile () part out doesn't change
anything. The OS is Windows ME. The download of 2.5 finished with a
warning saying that 2.5 was the highest version for Windows 9* Any
tips?
Thanks
Does 'unable to start a 2.5 idle window' mean you get some sort of error
or simply that nothing happens?
What happens if you simply run C:\Python25\Lib\IDLELIB\idle.bat
Does that work or not?
What about running this from a command prompt:
C:\Python25\python.exe C:\Python25\Lib\IDLELIB\idle.py
Does that run idle or do you get any error messages?
What about this?
C:\Python25\python.exe C:\Python25\Lib\IDLELIB\idle.pyw
Using pythonw.exe will start the program with all error output dumped in
the bit bucket. Running from a command prompt with python.exe will at
least let you see if there are any errors.
--
Duncan Booth http://kupuguy.blogspot.com
--
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Re: Your beloved python features
I've asked this question at stackoverflow a few weeks ago, and to make it clear: this should NOT be a copy of the stackoverflow-thread hidden features of Python. I want to design a poster for an open source conference, the local usergroup will have a table there, and in the past years there were some people that came to the python-table just to ask why should I use python?. For those guys would be a poster quite cool which describes the most popular and beloved python features. So, may you help me please? If there's a similar thread/blogpost/ whatever, please give it to me, google couldn't. Regards Julian http://www1.american.edu/academic.depts/cas/econ/faculty/isaac/choose_python.pdf This is effin hilarious! Should be either linked or stored on python.org Cheers, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Repost: Read a running process output
Hi,
I very badly need this to work. I have been googling out for a week
with no significant solution. I open a process p1 which does keeps
running for 4+ hours. It gives some output in stdout now and then. I
open this process with subprocess.Popen and redirect the stdout to
PIPE. However when I read the output with readline it blocks waiting
forever. I need to read from p1.stdout till what it has in the PIPE.
Can someone help me out with the exact code change that can accomplish
the task.
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE,shell=True)
while 1:
line=p1.stdout.readline()
print line
Thanks in advance,
~Ashok.
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Re: Python and Ruby
Steve Holden wrote: Jeez, Steve, you're beginning to sound like some kind of fallacy zealot... ;) Death to all those who confuse agumentum ad populum with argumentum ad verecundiam!!! Yeah, what did the zealots ever do for us? They produced Python? . . . Oh Python! Shut up! -- http://mail.python.org/mailman/listinfo/python-list
Re: Repost: Read a running process output
Ashok Prabhu ashokprab...@gmail.com writes:
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE,shell=True)
Use Popen(['/usr/...','-d'],stdout=PIPE), i.e., no shell.
-- Alain.
--
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Re: Your beloved python features
R Fritz rfritz...@gmail.com wrote in message news:e97ff208-d08e-4934-8e38-a40d668cd...@l24g2000prh.googlegroups.com... My favorite feature is its readability. It's as near to pseudo-code as any language we have, and that's valuable in open source projects or when I return to code to modify it. That might be true when used to code actual algorithms using basic features. But a lot of Pythonisms would appear mysterious to someone who doesn't know the language (for example, what does :: mean in an array index). Or perhaps pseudo-code is much more advanced these days... -- bartc -- http://mail.python.org/mailman/listinfo/python-list
Simple question about Queue.Queue and threads
Hi all Assume you have a server process running, a pool of worker threads to perform tasks, and a Queue.Queue() to pass the tasks to the workers. In order to shut down the server cleanly, you want to ensure that the workers have all finished their tasks. I like the technique of putting a None onto the queue, and have each worker check for None, put None back onto the queue, and terminate itself. The main program would look something like this - q.put(None) for worker in worker_threads: worker.join() At this point you can be sure that each thread has completed its tasks and terminated itself. However, the queue is not empty - it still has the final None in it. Is it advisable to finalise the cleanup like this? - while not q.empty(): q.get() q.task_done() q.join() Or is this completely redundant? Thanks Frank Millman -- http://mail.python.org/mailman/listinfo/python-list
Re: Repost: Read a running process output
On Feb 5, 5:12 pm, Alain Ketterlin al...@dpt-info.u-strasbg.fr
wrote:
Ashok Prabhu ashokprab...@gmail.com writes:
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE,shell=True)
Use Popen(['/usr/...','-d'],stdout=PIPE), i.e., no shell.
-- Alain.
Hi Alain,
Thanks for the response. However it throws an error. Please find
below.
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE)
Traceback (most recent call last):
File stdin, line 1, in ?
File /usr/lib/python2.4/subprocess.py, line 543, in __init__
errread, errwrite)
File /usr/lib/python2.4/subprocess.py, line 975, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory
Thanks,
~Ashok.
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Re: Repost: Read a running process output
Ashok Prabhu ashokprab...@gmail.com writes:
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE,shell=True)
Use Popen(['/usr/...','-d'],stdout=PIPE), i.e., no shell.
-- Alain.
Thanks for the response. However it throws an error. Please find
below.
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE)
You forgot to change the monolithic command into a list of words. Since
you don't use the shell anymore you have to give Popen a pre-parsed
command line.
-- Alain.
--
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Re: C:\Python25\Lib\IDLELIB\idle.pyw won't start
Thank you both (Alf and Duncan) for your comments. I answer Duncan's
questions interleaved:
Duncan Booth wrote:
Anthra Norell anthra.nor...@bluewin.ch wrote:
Hi,
I upgraded from 2.4 to 2.5 and am unable to start an 2.5 idle
window.
This is the command I have been using:
C:\Python24\pythonw.exe C:\Python24\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python24\\i')
And this is the command that doesn't start anything:
C:\Python25\pythonw.exe C:\Python25\Lib\IDLELIB\idle.pyw -n -c
execfile('C:\\Python25\\i')
The command is exactly the same with the digit 5 in the place of 4.
All paths and names are correct. C:\\Python25\\i sets up sys.path but
seems irrelevant, as taking the execfile () part out doesn't change
anything. The OS is Windows ME. The download of 2.5 finished with a
warning saying that 2.5 was the highest version for Windows 9* Any
tips?
Thanks
Does 'unable to start a 2.5 idle window' mean you get some sort of error
or simply that nothing happens?
Nothing happens and no error message shows. The disk head stepper makes
a brief attempt at something then goes silent and that's it.
What happens if you simply run C:\Python25\Lib\IDLELIB\idle.bat
Does that work or not?
Same thing: Nothing happens
What about running this from a command prompt:
C:\Python25\python.exe C:\Python25\Lib\IDLELIB\idle.py
Same thing: Nothing!
Does that run idle or do you get any error messages?
What about this?
C:\Python25\python.exe C:\Python25\Lib\IDLELIB\idle.pyw
Nothing!
Using pythonw.exe will start the program with all error output dumped in
the bit bucket. Running from a command prompt with python.exe will at
least let you see if there are any errors.
python.exe from the command line works all right in a DOS window. The
problem must be with idle.pyw. I tried the old idle.pyw (2.4) with the
new python.exe. (2.5) and that didn't work either.
What is the bit bucket? If I had a clue, I could go from there. What
puzzles me is that version 2.4 has been working fine and one wouldn't
think that the changes from 2.4 to 2.5 would be so extensive as to cause
a major malfunction. For the time being 2.4 works fine. I'd much prefer
2.5, though, because it includes the image library (PIL), whereas 2.4
cannot even use it.
Frederic
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Re: Repost: Read a running process output
On Feb 5, 5:58 pm, Alain Ketterlin al...@dpt-info.u-strasbg.fr
wrote:
Ashok Prabhu ashokprab...@gmail.com writes:
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE,shell=True)
Use Popen(['/usr/...','-d'],stdout=PIPE), i.e., no shell.
-- Alain.
Thanks for the response. However it throws an error. Please find
below.
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE)
You forgot to change the monolithic command into a list of words. Since
you don't use the shell anymore you have to give Popen a pre-parsed
command line.
-- Alain.
Here is the error again
p1=Popen('/usr/sunvts/bin/64/vtsk','-d',stdout=PIPE)
Traceback (most recent call last):
File stdin, line 1, in ?
File /usr/lib/python2.4/subprocess.py, line 494, in __init__
raise TypeError(bufsize must be an integer)
TypeError: bufsize must be an integer
~Ashok.
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Re: Repost: Read a running process output
On Feb 5, 6:33 pm, Ashok Prabhu ashokprab...@gmail.com wrote:
On Feb 5, 5:58 pm, Alain Ketterlin al...@dpt-info.u-strasbg.fr
wrote:
Ashok Prabhu ashokprab...@gmail.com writes:
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE,shell=True)
Use Popen(['/usr/...','-d'],stdout=PIPE), i.e., no shell.
-- Alain.
Thanks for the response. However it throws an error. Please find
below.
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE)
You forgot to change the monolithic command into a list of words. Since
you don't use the shell anymore you have to give Popen a pre-parsed
command line.
-- Alain.
Here is the error again
p1=Popen('/usr/sunvts/bin/64/vtsk','-d',stdout=PIPE)
Traceback (most recent call last):
File stdin, line 1, in ?
File /usr/lib/python2.4/subprocess.py, line 494, in __init__
raise TypeError(bufsize must be an integer)
TypeError: bufsize must be an integer
~Ashok.
Oops i missed the braces. But still no output.
p1=Popen(['/usr/sunvts/bin/64/vtsk','-d'],stdout=PIPE)
while 1:
... a=p1.stdout.readline()
... print a
...
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Re: Your beloved python features
On Feb 5, 2010, at 12:03 AM, Julian wrote: Hello, I've asked this question at stackoverflow a few weeks ago, and to make it clear: this should NOT be a copy of the stackoverflow-thread hidden features of Python. I want to design a poster for an open source conference, the local usergroup will have a table there, and in the past years there were some people that came to the python-table just to ask why should I use python?. For those guys would be a poster quite cool which describes the most popular and beloved python features. So, may you help me please? If there's a similar thread/blogpost/ whatever, please give it to me, google couldn't. My reasoning: I needed a language more powerful than bash, but more portable and faster to develop (at least small scripts) than C/C++. So I needed a scripting language. Python, Ruby, Perl, Tcl, ...? Python seems to be the language with the most libraries available, programs written in it, OS-support (even runs on my smartphone), has a good data-model, has a good interactive shell (iPython). -- http://mail.python.org/mailman/listinfo/python-list
Re: Your beloved python features
Julian a écrit : Hello, I've asked this question at stackoverflow a few weeks ago, and to make it clear: this should NOT be a copy of the stackoverflow-thread hidden features of Python. I want to design a poster for an open source conference, the local usergroup will have a table there, and in the past years there were some people that came to the python-table just to ask why should I use python?. For those guys would be a poster quite cool which describes the most popular and beloved python features. My all-time favorite Python feature : it fits my brain. -- http://mail.python.org/mailman/listinfo/python-list
Re: C:\Python25\Lib\IDLELIB\idle.pyw won't start
Anthra Norell anthra.nor...@bluewin.ch wrote: Using pythonw.exe will start the program with all error output dumped in the bit bucket. Running from a command prompt with python.exe will at least let you see if there are any errors. python.exe from the command line works all right in a DOS window. The problem must be with idle.pyw. I tried the old idle.pyw (2.4) with the new python.exe. (2.5) and that didn't work either. What is the bit bucket? If I had a clue, I could go from there. What puzzles me is that version 2.4 has been working fine and one wouldn't think that the changes from 2.4 to 2.5 would be so extensive as to cause a major malfunction. For the time being 2.4 works fine. I'd much prefer 2.5, though, because it includes the image library (PIL), whereas 2.4 cannot even use it. Bit bucket: http://en.wikipedia.org/wiki/Bit_bucket If you are seeing nothing at all when running it with python.exe instead of pythonw.exe then something bizarre must be happening. My guess would have been that you had a problem importing something: e.g. if Tkinter isn't installed properly then running Idle under pythonw.exe would exit with an error message but you wouldn't see the error message. However since you don't see an error message when running it with python.exe it isn't that. Sorry, I'm out of ideas for now. -- Duncan Booth http://kupuguy.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
which
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
or
self.cmd = cmd
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
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Re: YAML (was: Python and Ruby)
In article 00f4bb3a$0$15566$c3e8...@news.astraweb.com, Steven D'Aprano st...@remove-this-cybersource.com.au wrote: On Thu, 04 Feb 2010 09:57:59 -0500, Lou Pecora wrote: Well, that looks a bit more complicated than I would like, but maybe it's doing more stuff than I can grok. Here's what I needed and how I did it in Python: [...] # Reading same list in: instr=fp.readline() inlist=eval(instr) x1,y1,astr1,z1= inlist That's what I needed. 3 lines to write or read a inhomogeneous collection of variables. Easy, but also quick and dirty -- good enough for small scripts, but not really good enough for production applications. I can add more variables, shuffle the order, whatever without messing with formatting, etc. This is nice and easy. But there are at least four catches: * you can't safely treat the data file as human-editable (although a sufficiently careful and Python-aware user could edit it) * you can't use any data that isn't a built-in, or that contains something that is not a built-in * there may be reliability issues with floats - you're at the mercy of changes to the underlying repr of float objects, and it almost certainly will blow up in your face if you get an inf or nan (at least prior to Python 2.6) * you're using eval, which is a security risk if you can't trust the source of the data file. However, be aware that neither marshal nor pickle guarantees to be safe against malicious data either. The docs for both warn against using them on untrusted data. YAML or JSON *might* be safer, I haven't looked. I understand where you are coming from: Production Code. I was just making a point about Python and my code is only used by me. I can edit the file for the simple I/O I do. I am not recommending this way for everyone. Just an example. -- -- Lou Pecora -- http://mail.python.org/mailman/listinfo/python-list
Re: which
cmd= isinstance(cmd,str) and c.replace('${ADDR}',ip) or cmd
Best Regards,
-- KDr2 http://kdr2.net
On Fri, Feb 5, 2010 at 10:21 PM, mk mrk...@gmail.com wrote:
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
or
self.cmd = cmd
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
--
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Pickling an extension type subclasses problems
Hi all,
I am trying to write an (optional!) C extension for SQLAlchemy, and I
am struggling to make an extension type picklable *and* using the same
format as the pure Python version (so that computers with the C
extension can unpickle pickles from computers without it and
vice-versa). Also the extension type (MyBase in the example code
below) only serves as a base class for the type that get pickled
(MyPythonType). MyPythonType also has further subclasses and those
should be picklable too.
My setup is as follow:
On the Python side:
try:
from cextension import MyBase
except ImportError:
class MyBase(object):
__slots__ = ('a', 'b', 'c')
def __init__(self, a, b, c):
self.a, self.b, self.c = a, b, c
def __getstate__(self):
...
def __setstate__(self, state):
...
...
class MyPythonType(MyBase):
...
On the .c side:
===
I implemented a reduce method, which returns
Py_BuildValue((O(s)N), Py_TYPE(self), __state__, state);
and in my BaseRowProxy_init method, I check the number of arguments,
whether the __state__ marker is present and unpack the state if it
is. This makes the type nicely pickleable, but this is obviously not
the same pickle format as the Python version.
What would you recommend in this kind of situation? I'm a bit tired of
trial and error... My last hope is to define __reduce__ on the Python
side too, and make it use a module-level reconstructor function as
follow:
def mypythontype_reconstructor(cls, state):
obj = object.__new__(cls, state):
return obj
Will this work? Any other idea?
Thanks in advance,
--
Gaëtan de Menten
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Re: which
mk wrote:
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
or
self.cmd = cmd
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
My own preference is for the latter, but I am sure you will find that
opinions are mixed on this. In recent versions of Python you might want
to take the possibility that cmd is Unicode into account by using
id isinstance(cmd, basestring):
regards
Steve
--
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PyCon is coming! Atlanta, Feb 2010 http://us.pycon.org/
Holden Web LLC http://www.holdenweb.com/
UPCOMING EVENTS:http://holdenweb.eventbrite.com/
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Re: which
mk wrote:
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
or
self.cmd = cmd
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
I would vote for the first one. But I could use the second as well, I
would'nt fight for it.
What is worrying me the most in your code sample is that self.cmd can
hold diferrent types (str, and something else). That is usually a bad
thing to do (putting None aside).
However, my remark could be totally irrelevant of course, that depends
on the context.
JM
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Re: Your beloved python features
Bruno Desthuilliers wrote: Julian a écrit : Hello, I've asked this question at stackoverflow a few weeks ago, and to make it clear: this should NOT be a copy of the stackoverflow-thread hidden features of Python. I want to design a poster for an open source conference, the local usergroup will have a table there, and in the past years there were some people that came to the python-table just to ask why should I use python?. For those guys would be a poster quite cool which describes the most popular and beloved python features. My all-time favorite Python feature : it fits my brain. Python is simple ... no offense Bruno :D JM (sorry couldn't help) -- http://mail.python.org/mailman/listinfo/python-list
method to intercept string formatting % operations
Hello, For container class derived from namedtuple, but which also behaves like a dictionary by implementing __getitem__ for non-integer index values, is there a special reserved method which allows intercepting % string formatting operations? I would like for my container type to behave appropriately depending on whether the string formatting operation has a string like this : whatever %s yadayada % mycontainer # needs to act like a tuple whatever %(key)s yadayada % mycontainer # needs to act like a dictionary I looked through the Python data model docs at http://docs.python.org/ reference/datamodel.html#emulating-container-types but only found this: If the left operand of a % operator is a string or Unicode object, no coercion takes place and the string formatting operation is invoked instead. Thanks! -- http://mail.python.org/mailman/listinfo/python-list
Re: which
Jean-Michel Pichavant wrote: What is worrying me the most in your code sample is that self.cmd can hold diferrent types (str, and something else). That is usually a bad thing to do (putting None aside). However, my remark could be totally irrelevant of course, that depends on the context. That's a valid criticism - but I do not know how to handle this otherwise really, because the program can be called with cmd to run, or a script to run (or a directory to copy) and in those cases cmd is None. I guess I could use if cmd: self.cmd = ... But. Suppose that under some circumstances cmd is not string. What then? I know that isinstance is typically not recommended, but I don't see better solution here. Regards, mk -- http://mail.python.org/mailman/listinfo/python-list
Re: which
KDr2 wrote:
cmd= isinstance(cmd,str) and c.replace('${ADDR}',ip) or cmd
Perlish, but I like that. :-)
Regards,
mk
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Re: Your beloved python features
On 2010-02-04, Julian maili...@julianmoritz.de wrote: I've asked this question at stackoverflow a few weeks ago, and to make it clear: this should NOT be a copy of the stackoverflow-thread hidden features of Python. I want to design a poster for an open source conference, the local usergroup will have a table there, and in the past years there were some people that came to the python-table just to ask why should I use python?. For those guys would be a poster quite cool which describes the most popular and beloved python features. In the fine old tradition: Python: It sucks less. A lot less. -- Grant Edwards grante Yow! You should all JUMP at UP AND DOWN for TWO HOURS visi.comwhile I decide on a NEW CAREER!! -- http://mail.python.org/mailman/listinfo/python-list
Re: which
mk wrote: Jean-Michel Pichavant wrote: What is worrying me the most in your code sample is that self.cmd can hold diferrent types (str, and something else). That is usually a bad thing to do (putting None aside). However, my remark could be totally irrelevant of course, that depends on the context. That's a valid criticism - but I do not know how to handle this otherwise really, because the program can be called with cmd to run, or a script to run (or a directory to copy) and in those cases cmd is None. I guess I could use if cmd: self.cmd = ... But. Suppose that under some circumstances cmd is not string. What then? I know that isinstance is typically not recommended, but I don't see better solution here. Regards, mk If you can change your program interface, then do it, if not then you're right you don't have much choice as you are suffering from the program poor interface. You can fix this problem by explicitly asking for the thing you want to do, instead of guessing by inspecting the argument nature. myProg --help usage : myProg command [args] command list: - cmd: execute the given arg1 command line - exec: execute the given script file named arg1 - copy: copy arg1 to arg2 example: myProg cmd echo that's cool myProg exec /etc/init.d/myDaemon myProg copy /tmp /tmp2 JM -- http://mail.python.org/mailman/listinfo/python-list
Terminating threaded programs
Hello everyone, I have a problem with a threaded program: it frequently hangs on sys.exit. The problem is that my program uses threads which in turn use paramiko library, which itself is threaded. I try to gracefully close the threads (below), but it doesn't always work, if paramiko calls happen to be at stage of negotiating ssh connection or smth similar. The only workable solution I have is a program sending itself SIGKILL, which makes it terminated by OS (I think so). Is there any way to brutally close the threads? I know that normally that should not be done, but shutdown when you don't care about writing out to disk is the only situation where it doesn't apply. def ctrlchandler(signal, frame): print print ENDC + Terminating on Ctrl-C, closing threads for:, while queue: for ip, th in queue: print ip, try: lock.acquire() th.abort = True lock.release() except RuntimeError: pass queue.remove((ip,th)) print pid = os.getpid() print Finished closing threads. # suicide - it's the only way of preventing frequent hangup on sys.exit os.kill(pid, SIGTERM) os.kill(pid, SIGKILL) sys.exit(0) -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: ActivePython 2.6.4.10 is now available
On Feb 5, 2010, at 12:01 AM, Sridhar Ratnakumar wrote: I'm happy to announce that ActivePython 2.6.4.10 is now available for download from: On what platforms does ActivePython run? ActivePython includes installers for the following platforms: - Windows/x86 - Windows/x64 (aka AMD64) - Mac OS X Is the Mac OS X version still only 32 bit? If so does ActiveState plan to make binaries for 64bit builds for Snow Leopard? Cheers Tommy -- http://mail.python.org/mailman/listinfo/python-list
Drawing a zig-zag Trail in Python?
I'd like to draw something like an animal track. Between each point is a line. Perhaps the line would have an arrow showing the direction of motion. There should be x-y coordinates axises. PIL? MatPlotLib, ?? -- http://mail.python.org/mailman/listinfo/python-list
Re: which
On 2/5/2010 9:21 AM, mk wrote:
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
or
self.cmd = cmd
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
(lunatic fringe?)
Last August [1], I offered this alternative:
self.cmd = (cmd.replace(r'${ADDR}',ip)
if isinstance(cmd, str) else
cmd)
But it didn't get much love in this forum!
[1]
http://groups.google.com/group/comp.lang.python/browse_thread/thread/6876917a4d579d59/1f700586f4c4614d?lnk=gstq=Posner#1f700586f4c4614d
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Re: method to intercept string formatting % operations
bradallen wrote: Hello, For container class derived from namedtuple, but which also behaves like a dictionary by implementing __getitem__ for non-integer index values, is there a special reserved method which allows intercepting % string formatting operations? I would like for my container type to behave appropriately depending on whether the string formatting operation has a string like this : whatever %s yadayada % mycontainer # needs to act like a tuple whatever %(key)s yadayada % mycontainer # needs to act like a dictionary I looked through the Python data model docs at http://docs.python.org/ reference/datamodel.html#emulating-container-types but only found this: If the left operand of a % operator is a string or Unicode object, no coercion takes place and the string formatting operation is invoked instead. Thanks! class toto: def __getitem__(self, key): return 'paf' def __str__(self): return 'pif' def toTuple(self): return (1,2,3) 1/ print '%s %s %s' % toto().toTuple() '1 2 3' 2/ print '%(key)s ' % toto() 'paf' 3/ print '%s' % toto() 'pif' 1/ I don't know how to spare the explicit toTuple conversion, supporting tuple() would be tedious 2/ thanks to __getitem__ (duck typing) 3/ thanks to __str__ Anyway why would you want to use the tuple form ? it's beaten in every aspect by the dictionary form. JM If you need something call me, I'll tell you how to live without it (Coluche, about politicians) -- http://mail.python.org/mailman/listinfo/python-list
Re: Your beloved python features
Jean-Michel Pichavant a écrit : Bruno Desthuilliers wrote: My all-time favorite Python feature : it fits my brain. Python is simple ... no offense Bruno :D !-) But FWIW, that's exactly the point : even a stoopid like me can manage to learn and use Python, and proceed to write working apps without spending more time reading the doc than actually solving the problem. -- http://mail.python.org/mailman/listinfo/python-list
Re: which
Jean-Michel Pichavant wrote:
If you can change your program interface, then do it, if not then you're
right you don't have much choice as you are suffering from the program
poor interface.
You can fix this problem by explicitly asking for the thing you want to
do, instead of guessing by inspecting the argument nature.
myProg --help
usage : myProg command [args]
command list:
- cmd: execute the given arg1 command line
- exec: execute the given script file named arg1
- copy: copy arg1 to arg2
example:
myProg cmd echo that's cool
myProg exec /etc/init.d/myDaemon
myProg copy /tmp /tmp2
I sure can change the interface since I'm the author of the entire
program. But I don't see how I can arrange program in a different way:
the program is supposed to be called with -c parameter (command to run),
-s script to run, or -y file_or_dir_to_copy.
Then, I start instances of SSHThread class to do precisely that,
separately for each ip/hostname:
class SSHThread(threading.Thread):
def __init__(self, lock, cmd, ip, username, sshprivkey=None,
passw=None, port=22, script=None, remotedir=None):
threading.Thread.__init__(self)
self.lock = lock
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
self.ip = ip
self.username = username
self.sshprivkey = sshprivkey
self.passw = passw
self.port = port
self.conobj = None
self.conerror = ''
self.msgstr = ''
self.confailed = True
if script:
self.setpathinfo(script, remotedir=remotedir)
self.sentbytes = 0
self.finished = False
self.abort = False
It gets called like this:
th = SSHThread(lock, opts.cmd, ip, username=username,
sshprivkey=opts.key, passw=passw, port=port, script=opts.script,
remotedir=opts.remotedir)
..where all the options are parsed by ConfigParser.OptionParser(). So
they are either strings, or Nones.
So in this context this is fine. But I wanted to make the class more
robust. Perhaps I should do smth like this before setting self.cmd?
assert isinstance(cmd, basestring) or cmd is None, cmd should be string
or None
and then:
if cmd:
self.cmd = cmd.replace..
?
Entire source code is here:
http://python.domeny.com/cssh.py
regards,
mk
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Re: which
John Posner wrote:
On 2/5/2010 9:21 AM, mk wrote:
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
or
self.cmd = cmd
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
(lunatic fringe?)
Last August [1], I offered this alternative:
self.cmd = (cmd.replace(r'${ADDR}',ip)
if isinstance(cmd, str) else
cmd)
But it didn't get much love in this forum!
[1]
http://groups.google.com/group/comp.lang.python/browse_thread/thread/6876917a4d579d59/1f700586f4c4614d?lnk=gstq=Posner#1f700586f4c4614d
Heresy !
JM
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Re: list.extend([]) Question
In article 088e7a24-b0d0-4d43-bee7-193e5eaef...@b7g2000pro.googlegroups.com, Dan Brown fsenz...@gmail.com wrote: Why does extending a list with the empty list result in None? It seems very counterintuitive to me, at least --- I expected ['a'].extend ([]) to result in ['a'], not None. http://www.python.org/doc/faq/general/#why-doesn-t-list-sort-return-the-sorted-list -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ import antigravity -- http://mail.python.org/mailman/listinfo/python-list
xmlrcp - how to marshall objects
Deos anyone knows where to find an code sample describing how to implement the interface to marshall one object into XMLRPC compliant structures ? I googled without any success, and what google does not find does not exist. Let say I have this very simple class: class Point: def __init__(self, x, y): self.x = x self.y = y I've looked into xmlrpc code, I see 2 options: 1/ override the Marshaller class of client and server 2/ looks like the lib is supporting a WRAPPER list system, it uses to Marshall Datetime Binary object. Can it be possible to add its own class (could require to emplement the 'encode' method) I sense I will spend much more time than required unless someone is pointing me in the right direction. JM -- http://mail.python.org/mailman/listinfo/python-list
Re: which
mk a écrit : (snip) So in this context this is fine. But I wanted to make the class more robust. Perhaps I should do smth like this before setting self.cmd? assert isinstance(cmd, basestring) or cmd is None, cmd should be string or None and then: if cmd: self.cmd = cmd.replace.. And what if cmd happens to be the empty string ?-) ok, me ---[] -- http://mail.python.org/mailman/listinfo/python-list
Re: which
[snip]
Last August [1], I offered this alternative:
self.cmd = (cmd.replace(r'${ADDR}',ip)
if isinstance(cmd, str) else
cmd)
But it didn't get much love in this forum!
I'd probably go for that one as well though I might consider removing
the outer parentheses.
--
Gerald Britton
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Re: which
mk a écrit :
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
What could cmd be except a string ? From other posts here, I guess
it's either a string or None ? If yes, then I'd go for this:
if cmd:
cmd = cmd.replace(r'${ADDR}',ip)
self.cmd = cmd
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Import question
Code of our project has split into several packages and we deploy the
project using buildout.
All worked fine until I need to dynamically inspect python modules.
Here is structure of our src directory
├───project.api.config
│ ├───project
│ │ └───api
│ │ └───config
│ │ └───settings
│ └───project.api.config.egg-info
├───project.api.contacts
│ ├───project
│ │ └───api
│ │ └───contacts
│ │ ├───importer
│ │ └───views
│ └───project.api.contacts.egg-info
├───project.api.core
│ ├───project
│ │ └───api
│ │ └───core
│ │ ├───js
│ │ ├───lib
│ │ ├───management
│ │ │ └───commands
│ │ ├───middleware
│ │ ├───sessions
│ │ └───users
│ └───project.api.core.egg-info
Buildout by itself generates bin/python which look like:
import sys
sys.path[0:0] = [
'c:\\users\\ad\\project\\src\\project.api.core',
'c:\\users\\ad\\project\\src\\project.api.config',
'c:\\users\\ad\\project\\src\\project.api.contacts',
'c:\\users\\ad\\project\\eggs\\lockfile-0.8-py2.6.egg',
'c:\\users\\ad\\project\\parts\\django',
'c:\\users\\ad\\project\\eggs\\web.py-0.33-py2.6.egg',
Regular code like import project.api.config worked fine, but now I'm tryed
__import__('project.api.config'):
$ bin/python
import project.api.config
__import__('project.api.config')
module 'project from
'c:\users\ad\project\src\project.api.contacts\project\__init__.pyc'
What's wrong?
Ok, I'm trying imp:
import imp
imp.find_module('project.api.config')
Traceback (most recent call last):
File console, line 1, in module
ImportError: No module named project.api.config
import sys
sys.path[1]
'c:\\users\\ad\\project\\src\\project.api.config'
imp.find_module('project.api.config', sys.path[1])
Traceback (most recent call last):
File console, line 1, in module
ImportError: No frozen submodule named
c:\users\ad\project\src\project.api.config.project.api.config
There is setup.py for project.api.config:
import os
from setuptools import setup, find_packages
name = project.api.config
install_requires = [
'zc.buildout',
'setuptools',
'web.py=0.33',
'project.api.core',
'Django=1.1.0',
'lockfile'
]
if sys.platform != 'win32':
install_requires.append('python-daemon')
setup(
name = name,
version = 1.0,
author = Andrew Degtiariov,
author_email = andrew.degtiar...@gmail.com,
description = ...,
license = Commercial,
packages=find_packages(os.path.dirname(__file__), exclude=['ez_setup']),
namespace_packages=['project, 'project.api'],
include_package_data=True,
zip_safe=False,
install_requires = install_requires
)
What's wrong? We really need to split the code for several eggs and want
that all of our package's names starts from 'project.api'
--
Andrew Degtiariov
DA-RIPE
--
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Re: which
On 2/5/2010 11:06 AM, Gerald Britton wrote:
[snip]
Last August [1], I offered this alternative:
self.cmd = (cmd.replace(r'${ADDR}',ip)
if isinstance(cmd, str) else
cmd)
But it didn't get much love in this forum!
I'd probably go for that one as well though I might consider removing
the outer parentheses.
Agreed ... except that you *need* the outer parentheses if the statement
occupies multiple source lines.
-John
--
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Re: Wrap a function
In article mailman.1944.1265367378.28905.python-l...@python.org, Dennis Lee Bieber wlfr...@ix.netcom.com wrote: On 4 Feb 2010 16:18:04 -0800, a...@pythoncraft.com (Aahz) declaimed the following in gmane.comp.python.general: But in bash scripting, you'd just use rsync or cp or rm -- maybe an example would make clearer how REXX differs from bash. I suspect the only really good examples would have to written under OS/VMS (where it originated, written to be a more powerful friendlier replacement for the EXEC scripting language) or AmigaOS -- to demonstrate the switching interaction of command handlers. REXX implementations for Windows and Linux pretty much only support the shell as a command handler, whereas the two named OS could address editors (and on the Amiga, word processors, desktop publishing programs, terminal emulators/comm programs, system editor). My Amiga's been in storage since Win95 days, so this is a fictitious example based on the reference manuals. address command/* use normal command shell to process commands */ file = 'some.file' 'run ed' file /* start ED editor in background, editing 'file'*/ address ED /* send commands to the ED instance */ 'b'/* go to bottom of file */ 'i /text to be inserted before bottom line/' 't'/* to to top */ 'a /text inserted after first line/' find = 'needle' replace = 'thorn' 'rpe /' || find || '/' || replace '/' 'x'/* save exit */ address command 'type' file/* type file to screen */ 'filenote' file edited via AREXX script IOW, kinda like AppleScript? -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ import antigravity -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing a zig-zag Trail in Python?
W. eWatson wrote: I'd like to draw something like an animal track. Between each point is a line. Perhaps the line would have an arrow showing the direction of motion. There should be x-y coordinates axises. PIL? MatPlotLib, ?? Pycairo? -- http://mail.python.org/mailman/listinfo/python-list
Re: list.extend([]) Question
I think it's because when you do ['a'].extend([]) or whatever, the result is whatever the method extend returns. But extend has no return value, hence you will see None if you do this interactively. On Fri, Feb 5, 2010 at 10:55 AM, Aahz a...@pythoncraft.com wrote: In article 088e7a24-b0d0-4d43-bee7-193e5eaef...@b7g2000pro.googlegroups.com, Dan Brown fsenz...@gmail.com wrote: Why does extending a list with the empty list result in None? It seems very counterintuitive to me, at least --- I expected ['a'].extend ([]) to result in ['a'], not None. http://www.python.org/doc/faq/general/#why-doesn-t-list-sort-return-the-sorted-list -- Aahz (a...@pythoncraft.com) * http://www.pythoncraft.com/ import antigravity -- http://mail.python.org/mailman/listinfo/python-list -- Gerald Britton -- http://mail.python.org/mailman/listinfo/python-list
Re: which
Bruno Desthuilliers wrote:
if cmd:
self.cmd = cmd.replace..
And what if cmd happens to be the empty string ?-)
ok, me ---[]
Right, I didn't think much when I wrote that. Anyway, that's back to
square one.
I will probably go for this anyway:
assert isinstance(cmd, basestring) or cmd is None, 'cmd has to
be string or None'
if cmd:
cmd = cmd.replace(r'${ADDR}',ip)
self.cmd = cmd
--
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Re: Python's Reference And Internal Model Of Computing Languages
I read thisand am a tiny bit confused about the actual problem. It's not exactly complex to realize that something like: a = b = array that a and b both point to the array. Logically speaking, I'm not sure how one could assume that the same assignment would yield a and b point to the same duplicate array. If that was the case, why not do: a = array.. b = array.. I know with what you were complaining about a few days ago, .clear makes perfect sense. If a and b point to the same array, clear should clear both arrays. Again, if you didn't want that to happen, create a duplicate array. Personally I feel that this complexity doesn't hamper programming process, and yes while its good for efficiency it also just makes sense. Also, I wouldn't look at PHP on the right way to do something programming wise. I have ~5 years experience in this language, and I dislike it a whole lot. There's a lot of things it should do right that it doesn't out of convenience. -David www.thedarktrumpet.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Repost: Read a running process output
On 02/05/10 14:39, Ashok Prabhu wrote:
On Feb 5, 6:33 pm, Ashok Prabhu ashokprab...@gmail.com wrote:
On Feb 5, 5:58 pm, Alain Ketterlin al...@dpt-info.u-strasbg.fr
wrote:
Ashok Prabhu ashokprab...@gmail.com writes:
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE,shell=True)
Use Popen(['/usr/...','-d'],stdout=PIPE), i.e., no shell.
-- Alain.
Thanks for the response. However it throws an error. Please find
below.
from subprocess import *
p1=Popen('/usr/sunvts/bin/64/vtsk -d',stdout=PIPE)
You forgot to change the monolithic command into a list of words. Since
you don't use the shell anymore you have to give Popen a pre-parsed
command line.
-- Alain.
Here is the error again
p1=Popen('/usr/sunvts/bin/64/vtsk','-d',stdout=PIPE)
Traceback (most recent call last):
File stdin, line 1, in ?
File /usr/lib/python2.4/subprocess.py, line 494, in __init__
raise TypeError(bufsize must be an integer)
TypeError: bufsize must be an integer
~Ashok.
Oops i missed the braces. But still no output.
p1=Popen(['/usr/sunvts/bin/64/vtsk','-d'],stdout=PIPE)
while 1:
... a=p1.stdout.readline()
... print a
...
I've tried
#!/usr/bin/python
import subprocess
p1= subprocess.Popen(['/bin/ls','/LOCAL/'],stdout=subprocess.PIPE)
for line in p1.stdout :
print ,line
which works just fine.
Are you sure, your /usr/sunvts/bin/64/vtsk writes a newline character (readline
is waiting for that)?
Helmut.
--
Helmut Jarausch
Lehrstuhl fuer Numerische Mathematik
RWTH - Aachen University
D 52056 Aachen, Germany
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Re: which
mk wrote:
Jean-Michel Pichavant wrote:
If you can change your program interface, then do it, if not then
you're right you don't have much choice as you are suffering from the
program poor interface.
You can fix this problem by explicitly asking for the thing you want
to do, instead of guessing by inspecting the argument nature.
myProg --help
usage : myProg command [args]
command list:
- cmd: execute the given arg1 command line
- exec: execute the given script file named arg1
- copy: copy arg1 to arg2
example:
myProg cmd echo that's cool
myProg exec /etc/init.d/myDaemon
myProg copy /tmp /tmp2
I sure can change the interface since I'm the author of the entire
program. But I don't see how I can arrange program in a different way:
the program is supposed to be called with -c parameter (command to
run), -s script to run, or -y file_or_dir_to_copy.
Then, I start instances of SSHThread class to do precisely that,
separately for each ip/hostname:
class SSHThread(threading.Thread):
def __init__(self, lock, cmd, ip, username, sshprivkey=None,
passw=None, port=22, script=None, remotedir=None):
threading.Thread.__init__(self)
self.lock = lock
if isinstance(cmd, str):
self.cmd = cmd.replace(r'${ADDR}',ip)
else:
self.cmd = cmd
self.ip = ip
self.username = username
self.sshprivkey = sshprivkey
self.passw = passw
self.port = port
self.conobj = None
self.conerror = ''
self.msgstr = ''
self.confailed = True
if script:
self.setpathinfo(script, remotedir=remotedir)
self.sentbytes = 0
self.finished = False
self.abort = False
It gets called like this:
th = SSHThread(lock, opts.cmd, ip, username=username,
sshprivkey=opts.key, passw=passw, port=port, script=opts.script,
remotedir=opts.remotedir)
..where all the options are parsed by ConfigParser.OptionParser(). So
they are either strings, or Nones.
So in this context this is fine. But I wanted to make the class more
robust. Perhaps I should do smth like this before setting self.cmd?
assert isinstance(cmd, basestring) or cmd is None, cmd should be
string or None
and then:
if cmd:
self.cmd = cmd.replace..
?
Entire source code is here:
http://python.domeny.com/cssh.py
regards,
mk
To be honest I have not enough courrage to dive into yout 1000 lines of
script :-)
What I can say however:
1/ your interface is somehow broken. You ask actions through options (-c
-y -s), meaning one can possibly use all these 3 options together. Your
code won't handle it (you are using elif statements). What happens if I
use no option at all ? As the the optparse doc states : if an option is
not optional, then it is not an option (it's a positional argument).
2/ executing a script, or copying a directory are both commands as well.
myProg -s /tmp/myscript.sh
is nothing more than
myProg -c '/bin/sh myscript.sh'
myProg -y file1
is nothing more than
myProg -c 'cp file1 towhatever'
3/ check your user parameters before creating your SSHThread, and create
your SSHThread with already validated parameters. You don't want to
pollute you SSHThread code with irrelevant user error check.
my humble conclusion:
1/ rewrite your interface with
prog command args [options]
2/ Simplify your SSHThread by handling only shell commands
3/ at the CLI level (right after parameter validation), mute you copy
script
command to a shell command and pass it to SSHThread.
Cheers,
JM
--
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Re: Drawing a zig-zag Trail in Python?
mk wrote: W. eWatson wrote: I'd like to draw something like an animal track. Between each point is a line. Perhaps the line would have an arrow showing the direction of motion. There should be x-y coordinates axises. PIL? MatPlotLib, ?? Pycairo? turtle http://docs.python.org/library/turtle.html -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's Reference And Internal Model Of Computing Languages
David Thole dth...@gmail.com wrote in comp.lang.perl.misc: I read thisand am a tiny bit confused about the actual problem. It's not exactly complex to realize that something like: a = b = array that a and b both point to the array. ??? What are you talking about? First of all you should post actual code, not pseudo-code because pseudo-code leads to misunderstandings. Did you mean @a = @b = @array Second what do you mean by pointing? That is a very ambiguous term. if you do the assignment as written above then @a and @b will be _copies_ of @array. If you want two additional references to the same array insted then you have to create that reference first and assign that reference to $a and $b instead of copying the array, see perldoc perlref for details. And remember, references are scalars, no matter if they reference other scalars or arrays. Logically speaking, I'm not sure how one could assume that the same assignment would yield a and b point to the same duplicate array. If Now what? The same array or a duplicate array? Two very different and mutually exclusive things. that was the case, why not do: a = array.. b = array.. Which, after correcting the obvious syntax errors is the same as the code above. I know with what you were complaining about a few days ago, .clear makes perfect sense. If a and b point to the same array, clear should clear They don't point, they are copies. And what do you mean by clear? both arrays. Again, if you didn't want that to happen, create a duplicate array. But that is what that code above does. If you want references then create references. jue -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: ActivePython 2.6.4.10 is now available
On 2010-02-05, at 6:31 AM, Tommy Grav wrote: On Feb 5, 2010, at 12:01 AM, Sridhar Ratnakumar wrote: I'm happy to announce that ActivePython 2.6.4.10 is now available for download from: On what platforms does ActivePython run? ActivePython includes installers for the following platforms: - Windows/x86 - Windows/x64 (aka AMD64) - Mac OS X Is the Mac OS X version still only 32 bit? Yes. If so does ActiveState plan to make binaries for 64bit builds for Snow Leopard? No concrete plans yet, but we do intend to make 64 bit for Mac available eventually. -srid -- http://mail.python.org/mailman/listinfo/python-list
Re: which
On 2/5/2010 11:26 AM, Gerald Britton wrote:
sure, but it will fit nicely on one line if you like
On Fri, Feb 5, 2010 at 11:22 AM, John Posnerjjpos...@optimum.net wrote:
On 2/5/2010 11:06 AM, Gerald Britton wrote:
[snip]
Last August [1], I offered this alternative:
self.cmd = (cmd.replace(r'${ADDR}',ip)
if isinstance(cmd, str) else
cmd)
But it didn't get much love in this forum!
I'd probably go for that one as well though I might consider removing
the outer parentheses.
Agreed ... except that you *need* the outer parentheses if the statement
occupies multiple source lines.
-John
Did you mean to take this off-list? Also, I'm contractually obligated
to admonish you not to top post.
At any rate, I proposed the 3-line format specifically because it
separates the data values from the if-then-else machinery, making it
easier (for me) to read. But there was considerable resistance to
spending so much vertical space in the source code.
-John
--
http://mail.python.org/mailman/listinfo/python-list
Re: which
Did you mean to take this off-list? Nope -- just hit the wrong key Also, I'm contractually obligated to admonish you not to top post. Contract? At any rate, I proposed the 3-line format specifically because it separates the data values from the if-then-else machinery, making it easier (for me) to read. But there was considerable resistance to spending so much vertical space in the source code. Weird! It's three lines and the original was four lines was it not? -- Gerald Britton -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrcp - how to marshall objects
On Fri, 2010-02-05 at 17:03 +0100, Jean-Michel Pichavant wrote: Deos anyone knows where to find an code sample describing how to implement the interface to marshall one object into XMLRPC compliant structures ? I googled without any success, and what google does not find does not exist. Let say I have this very simple class: class Point: def __init__(self, x, y): self.x = x self.y = y You have to be more specific about what you want to do; marshall is a fairly generic term. XML-RPC isn't CORBA; typically you don't remote persistent objects you just make individual calls. I've looked into xmlrpc code, I see 2 options: 1/ override the Marshaller class of client and server 2/ looks like the lib is supporting a WRAPPER list system, it uses to Marshall Datetime Binary object. Can it be possible to add its own class (could require to emplement the 'encode' method) I sense I will spend much more time than required unless someone is pointing me in the right direction. You can use the loads and dumps methods to process the XML-RPC call anyway you like. http://coils.hg.sourceforge.net/hgweb/coils/coils/file/22c023c8e0f5/src/coils/net/xmlrpc.py -- OpenGroupware developer: awill...@whitemice.org http://whitemiceconsulting.blogspot.com/ OpenGroupare Cyrus IMAPd documenation @ http://docs.opengroupware.org/Members/whitemice/wmogag/file_view -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrcp - how to marshall objects
Jean-Michel Pichavant wrote: Why not dump the whole thing and use Pyro, which works beautifully and handles all the serialization business by itself, you get a Python object on the other side? Unless xmlrpc has to be at the other end, that is. -- http://mail.python.org/mailman/listinfo/python-list
Re: which
Jean-Michel Pichavant wrote: To be honest I have not enough courrage to dive into yout 1000 lines of script :-) Understandable. What I can say however: 1/ your interface is somehow broken. You ask actions through options (-c -y -s), meaning one can possibly use all these 3 options together. Your code won't handle it (you are using elif statements). What happens if I use no option at all ? You get this: Linux RH [17:35] root ~ # cssh.py -c ps|wc -s /tmp/s.sh Following options that you specified are mutually exclusive: -s / --script (value: /tmp/s.sh) -c / --cmd (value: ps|wc) You have to specify exactly one of options -c / --cmd, or -s / --script, or -y / --copy. I wrote additional logic to handle such situations, I don't rely entirely on optparse. 2/ executing a script, or copying a directory are both commands as well. myProg -s /tmp/myscript.sh is nothing more than myProg -c '/bin/sh myscript.sh' True. But you have to copy the script to remote machine in the first place. It's more convenient to do this using one option (copy to remote machine execute there). myProg -y file1 is nothing more than myProg -c 'cp file1 towhatever' Err but this is command to copy a local file/dir to *remote* machine. Like scp (in fact it uses scp protocol internally). 3/ check your user parameters before creating your SSHThread, and create your SSHThread with already validated parameters. You don't want to pollute you SSHThread code with irrelevant user error check. my humble conclusion: 1/ rewrite your interface with prog command args [options] 2/ Simplify your SSHThread by handling only shell commands 3/ at the CLI level (right after parameter validation), mute you copy script command to a shell command and pass it to SSHThread. Cheers, JM -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing a zig-zag Trail in Python?
Jean-Michel Pichavant wrote: mk wrote: W. eWatson wrote: I'd like to draw something like an animal track. Between each point is a line. Perhaps the line would have an arrow showing the direction of motion. There should be x-y coordinates axises. PIL? MatPlotLib, ?? Pycairo? turtle http://docs.python.org/library/turtle.html It's in standard library, and therefore Not Cool. duck -- http://mail.python.org/mailman/listinfo/python-list
Re: pyclutter anyone?
No one uses pyClutter?
I have some code, it does not work, but maybe this will start to help
solve the problem:
import clutter
from clutter import cogl
x,y=0,0
def boo(tl,frame,obj):#,evt):
global x,y
obj.set_position(x, y)
def xy(obj,evt):
global x,y
x,y = evt.x,evt.y
class G(clutter.Group):
Attempt to make a Group that can clip its children to a path.
def __init__(self,*args):
clutter.Group.__init__(self,*args)
#self.set_clip(0,0,10,10)
self.connect(paint,self.do_paint)
self._color = clutter.Color(255,200,100)
def do_paint(self, args):
width,height=200,200
cogl.path_move_to(width / 2, 0)
cogl.path_line_to(width, height)
cogl.path_line_to(0, height)
cogl.path_line_to(width / 2, 0)
cogl.path_close()
#cogl.set_source_color(self._color)
#cogl.path_fill()
## Colour me lost from here...
cogl.clip_push_from_path()
clutter.Group.do_paint(self)
cogl.clip_pop()
def main():
global group1
stage = clutter.Stage()
stage.set_size(500, 500)
stage.set_color(clutter.color_from_string(#FFF))
rect1, rect2, rect3 = clutter.Rectangle(), clutter.Rectangle(),
clutter.Rectangle()
group1, group2, group3 = G(), clutter.Group(), clutter.Group()
group1.add(rect1, group2)
group2.add(rect2, group3)
group3.add(rect3)
group1.set_position(100, 100)
group2.set_position(100, 100)
group3.set_position(100, 100)
rect1.set_position(0, 0)
rect2.set_position(0, 0)
rect3.set_position(0, 0)
rect1.set_size(150, 150)
rect2.set_size(150, 150)
rect3.set_size(150, 150)
rect1.set_color(clutter.color_from_string(#FF90))
rect2.set_color(clutter.color_from_string(#00FF0090))
rect3.set_color(clutter.color_from_string(#FF90))
stage.add(group1)
stage.show_all()
group1.show_all()
group2.show_all()
group3.show_all()
stage.connect(key-press-event, clutter.main_quit)
stage.connect('destroy', clutter.main_quit)
stage.connect('motion-event', xy)
path = clutter.Path('M 0 0 L 300 0 L 300 300 L 0 300z')
timeline = clutter.Timeline(4000)
timeline.set_loop(True)
alpha = clutter.Alpha(timeline,clutter.EASE_OUT_SINE)
p_behaviour = clutter.BehaviourPath(alpha, path)
path.add_move_to(0, 0)
p_behaviour.apply(group3)
timeline.add_marker_at_time(foo,2000)
timeline.start()
t=clutter.Timeline(1000)
t.set_loop(True)
t.connect('new-frame', boo, group1)
t.start()
clutter.main()
if __name__ == '__main__':
main()
\d
--
Fonty Python and Things! -- http://otherwise.relics.co.za/wiki/Software
--
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timer for a function
I have the following situation: 1. self.conobj = paramiko.SSHClient() self.conobj.connect(self.ip, username=self.username, key_filename=self.sshprivkey, port=self.port, timeout=opts.timeout) 2. very slow SSH host that is hanging for 30+ seconds on key exchange. The timeout in the options regards only a socket timeout, not further stages of connection negotiation, so it doesn't work there. On paramiko mailing list I got the suggestion to build a timer and then quit this by myself: The timeout option in connect() is for the socket, not for the entire operation. You are connected, so that timeout is no longer relevant. You would probably have to wrap the transport.connect() method in a timer to break out of this early. Question: how can I do that? Use another threaded class? Is there some other way? Additional snag is SSHClient() is a class that internally uses threads. How do I kill brutally its threads? Is there any way to do it? Regards, mk -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrcp - how to marshall objects
Jean-Michel Pichavant wrote: Deos anyone knows where to find an code sample describing how to implement the interface to marshall one object into XMLRPC compliant structures ? I googled without any success, and what google does not find does not exist. Let say I have this very simple class: class Point: def __init__(self, x, y): self.x = x self.y = y I've looked into xmlrpc code, I see 2 options: 1/ override the Marshaller class of client and server 2/ looks like the lib is supporting a WRAPPER list system, it uses to Marshall Datetime Binary object. Can it be possible to add its own class (could require to emplement the 'encode' method) I sense I will spend much more time than required unless someone is pointing me in the right direction. JM I realized I gave a poor example, actually the Point object is marshable (marshallable ? like to invent new words), xmlrpc will try to marshall using __dict__ if possible. import os class Point: def __init__(self, x, y): self.x = x self.y = y self.notMarshallable = os JM -- http://mail.python.org/mailman/listinfo/python-list
Re: Dreaming of new generation IDE
Robert Kern robert.k...@gmail.com writes: I prefer Guido's formulation (which, naturally, I can't find a direct quote for right now): if you expect that a boolean argument is only going to take *literal* True or False, then it should be split into two functions. So rather than three boolean arguments, would you have eight functions? -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Re: Your beloved python features
Ethan Furman wrote: http://www1.american.edu/academic.depts/cas/econ/faculty/isaac/choose_python.pdf Choose to get your difficult questions about threads in Python ignored. Oh well.. -- http://mail.python.org/mailman/listinfo/python-list
Re: Python's Reference And Internal Model Of Computing Languages
[Followup-To: header set to comp.lang.perl.misc.] Jürgen Exner jurge...@hotmail.com wrote: David Thole dth...@gmail.com wrote in comp.lang.perl.misc: I read thisand am a tiny bit confused about the actual problem. It's not exactly complex to realize that something like: a = b = array that a and b both point to the array. ??? What are you talking about? First of all you should post actual code, First of all, we should not be feeding the troll! actual code in one of Perl, Python or Lisp? -- Tad McClellan email: perl -le print scalar reverse qq/moc.liamg\100cm.j.dat/ -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrcp - how to marshall objects
mk wrote: Jean-Michel Pichavant wrote: Why not dump the whole thing and use Pyro, which works beautifully and handles all the serialization business by itself, you get a Python object on the other side? Unless xmlrpc has to be at the other end, that is. Company stuff. We are all using the xmlrpc standard for our network code. JM -- http://mail.python.org/mailman/listinfo/python-list
Re: Drawing a zig-zag Trail in Python?
On 2010-02-05, W. eWatson wolftra...@invalid.com wrote: I'd like to draw something like an animal track. Between each point is a line. Perhaps the line would have an arrow showing the direction of motion. There should be x-y coordinates axises. PIL? MatPlotLib, ?? I'd probably use gnuplot-py, but I'm probably biased since I've been using gnuplot since way before I learned Python. -- Grant Edwards grante Yow! Hello, GORRY-O!! at I'm a GENIUS from HARVARD!! visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: which
mk wrote: What I can say however: 1/ your interface is somehow broken. You ask actions through options (-c -y -s), meaning one can possibly use all these 3 options together. Your code won't handle it (you are using elif statements). What happens if I use no option at all ? Arrgh this is my bad day. You get this: Linux RH [17:35] root ~ # cssh.py -i linux You have to specify exactly one of the following: - command to run remotely, using -c command / --cmd command, or - script to run remotely, using -s scriptfile / --script scriptfile, or - file/directory to copy, using -y file_or_dir / --copy file_or_dir -- http://mail.python.org/mailman/listinfo/python-list
Re: Your beloved python features
Julian wrote: For those guys would be a poster quite cool which describes the most popular and beloved python features. Dictionaries. A workhorse of Python, by far the most useful data structure. -- http://mail.python.org/mailman/listinfo/python-list
Re: method to intercept string formatting % operations
On Fri, Feb 5, 2010 at 9:49 AM, Jean-Michel Pichavant jeanmic...@sequans.com wrote: Anyway why would you want to use the tuple form ? it's beaten in every aspect by the dictionary form. I'm subclassing a namedtuple, and adding some additional functionality such as __getitem__, __setitem__, so that the namedtuple also behaves like a dict. -- http://mail.python.org/mailman/listinfo/python-list
Re: Modules failing to add runtime library path info at link time
On Feb 1, 11:35 pm, cjblaine cjbla...@gmail.com wrote: On Feb 1, 11:04 pm, cjblaine cjbla...@gmail.com wrote: On Feb 1, 8:00 pm, Christian Heimes li...@cheimes.de wrote: cjblaine wrote: Where/how can I configure the appropriate portion of our Python install to do 100% the right thing instead of just 50% (-L)? Python's distutils doesn't alter the library search path unless you tell it explicitly. A specific example -- note the -L and lack of -R (Solaris build): % python setup.py build gcc -shared build/temp.solaris-2.10-sun4u-2.6/pgmodule.o -L/afs/rcf/ apps/catchall/lib -lpq -o build/lib.solaris-2.10-sun4u-2.6/_pg.so % The Extension() class supports the rpath argument. Simply add rpath=/path/to/library/dir and you are good. Christian Thanks for the reply. So, python setup.py build rpath=/whatever/lib ? Replying to myself: No. Actually, Christian, it looks like it's runtime_library_dirs? class Extension: ... runtime_library_dirs : [string] list of directories to search for C/C++ libraries at run time (for shared extensions, this is when the extension is loaded) So, how does one inject that into, I assume, setup.cfg ? Ideally it could be done via the build command-line, but I don't see a way to do that when browsing python setup.py build --help ( there is no setup.cfg provided in the PyGreSQL source tree, to ) ( continue that example case ) Anyone? -- http://mail.python.org/mailman/listinfo/python-list
Editor for Python
Hi All, I know that this question was put up on this list a thousand times. I know that most of the editors are listed here: http://wiki.python.org/moin/PythonEditors I already tried most of them. But still, I need something that is not listed there. Requirements: * starts and works fast * has code folding, displays identation guides * auto completion * class browser * source code browser (e.g. a list of definitions, when you click it jumps to the definition * integration with pychecker or pylint * UTF-8 files * free, or not-so-expensive * works on linux and windows The one I'm using now is Geany. It does everything, except class browser and pychecker/pylint. Now maybe, I can install (or write??) a geany extension that would allow me to use pychecker. But I could not find information on that. There where others I tried (PyPE, DrPython, KomodoEdit, Editra etc.) but all of them failed for some reason. Can you please suggest another editor that I could try? Or send me a link that tells how to write or install pychecked plugin for Geany. Thanks, Laszlo -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrcp - how to marshall objects
Jean-Michel Pichavant wrote: Jean-Michel Pichavant wrote: Deos anyone knows where to find an code sample describing how to implement the interface to marshall one object into XMLRPC compliant structures ? I googled without any success, and what google does not find does not exist. Let say I have this very simple class: class Point: def __init__(self, x, y): self.x = x self.y = y I've looked into xmlrpc code, I see 2 options: 1/ override the Marshaller class of client and server 2/ looks like the lib is supporting a WRAPPER list system, it uses to Marshall Datetime Binary object. Can it be possible to add its own class (could require to emplement the 'encode' method) I sense I will spend much more time than required unless someone is pointing me in the right direction. JM I realized I gave a poor example, actually the Point object is marshable (marshallable ? like to invent new words), xmlrpc will try to marshall using __dict__ if possible. marshallable. Just pick a verb and add -able. There was an advertisement by British Gas in which someone said that his gas central heating was very turn-off-and-on-able! :-) import os class Point: def __init__(self, x, y): self.x = x self.y = y self.notMarshallable = os -- http://mail.python.org/mailman/listinfo/python-list
Re: which
On 2/5/2010 11:53 AM, Gerald Britton wrote: Also, I'm contractually obligated to admonish you not to top post. Contract? Joke. (I know it's hard to tell.) At any rate, I proposed the 3-line format specifically because it separates the data values from the if-then-else machinery, making it easier (for me) to read. But there was considerable resistance to spending so much vertical space in the source code. Weird! It's three lines and the original was four lines was it not? Yes, but most people (including you, right?) seemed to think that conditional expressions are best confined to a single line. I proposed my 3-line alternative for expressions that *cannot* reasonably be confined to a single line. -John -- http://mail.python.org/mailman/listinfo/python-list
Re: Editor for Python
2010/2/5 Laszlo Nagy gand...@shopzeus.com: Hi All, I know that this question was put up on this list a thousand times. I know that most of the editors are listed here: http://wiki.python.org/moin/PythonEditors I already tried most of them. But still, I need something that is not listed there. Requirements: starts and works fast has code folding, displays identation guides auto completion class browser source code browser (e.g. a list of definitions, when you click it jumps to the definition integration with pychecker or pylint UTF-8 files free, or not-so-expensive works on linux and windows The one I'm using now is Geany. It does everything, except class browser and pychecker/pylint. Now maybe, I can install (or write??) a geany extension that would allow me to use pychecker. But I could not find information on that. There where others I tried (PyPE, DrPython, KomodoEdit, Editra etc.) but all of them failed for some reason. Can you please suggest another editor that I could try? Or send me a link that tells how to write or install pychecked plugin for Geany. Thanks, Laszlo -- http://mail.python.org/mailman/listinfo/python-list I use Geany too. It lets me see the classes in my module, though not within a package (Is that what you mean)? You'd probably have to write a plugin to support pychecker or pylint though I believe that its not too difficult. Who knows? Perhaps someone already has such a plugin that you can use. -- Gerald Britton -- http://mail.python.org/mailman/listinfo/python-list
Exception class documentation
I am so far unable to find the information I want about the Exception class. Information like the signature of __init__ seems to be unavailable. Any suggestions where I might find such information? Charles Yeomans -- http://mail.python.org/mailman/listinfo/python-list
Re: How Uninstall MatPlotLib?
On 2/5/2010 8:17 AM, W. eWatson wrote: See Subject. I'm working in IDLE in Win7. It seems to me it gets stuck in site-packages under C:\Python25. Maybe this is as simple as deleting the entry? Well, yes there's a MPL folder under site-packages and an info MPL file of 540 bytes. There are also pylab.py, pyc,and py0 files under site. -- http://mail.python.org/mailman/listinfo/python-list
Re: Exception class documentation
On Fri, Feb 5, 2010 at 12:55 PM, Charles Yeomans char...@declaresub.com wrote:
I am so far unable to find the information I want about the Exception class.
Information like the signature of __init__ seems to be unavailable. Any
suggestions where I might find such information?
Charles Yeomans
--
http://mail.python.org/mailman/listinfo/python-list
Though not documented, some silly tests indicate that it will accept
pretty much anything:
Exception(1,2,4,54)
Exception(1, 2, 4, 54)
Exception(*range(10))
Exception(0, 1, 2, 3, 4, 5, 6, 7, 8, 9)
Exception(*range(50))
Exception(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16,
17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33,
34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
Exception('a','b','c','d','e')
Exception('a', 'b', 'c', 'd', 'e')
Exception(Exception(1))
Exception(Exception(1,),)
--
Gerald Britton
--
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method names nounVerb or verbNoun
Which is the more accepted way to compose method names nounVerb or verbNoun? For example voltageGet or getVoltage? getVoltage sounds more normal, but voltageGet is more like voltage.Get. I seem to mix them and I should probably pick one way and stick with it. Thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: Dreaming of new generation IDE
Arnaud Delobelle wrote: Robert Kern robert.k...@gmail.com writes: I prefer Guido's formulation (which, naturally, I can't find a direct quote for right now): if you expect that a boolean argument is only going to take *literal* True or False, then it should be split into two functions. So rather than three boolean arguments, would you have eight functions? If there's genuinely a need for that functionality, yes. I statement that calls one of two functions depending on the value of a Boolean is normally considered to be better coupling than calling a single function with the Boolean as an argument. As with everything else you have to apply a certain amount of common sense. regards Steve -- Steve Holden +1 571 484 6266 +1 800 494 3119 PyCon is coming! Atlanta, Feb 2010 http://us.pycon.org/ Holden Web LLC http://www.holdenweb.com/ UPCOMING EVENTS:http://holdenweb.eventbrite.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: method names nounVerb or verbNoun
On Fri, Feb 5, 2010 at 2:53 PM, Wanderer wande...@dialup4less.com wrote: Which is the more accepted way to compose method names nounVerb or verbNoun? For example voltageGet or getVoltage? getVoltage sounds more normal, but voltageGet is more like voltage.Get. I seem to mix them and I should probably pick one way and stick with it. Thanks -- http://mail.python.org/mailman/listinfo/python-list I'd say noun_verb (note the underscore in accordance with the style guide in PEP 8): http://www.python.org/dev/peps/pep-0008/ Function Names Function names should be lowercase, with words separated by underscores as necessary to improve readability. mixedCase is allowed only in contexts where that's already the prevailing style (e.g. threading.py), to retain backwards compatibility. -- Gerald Britton -- http://mail.python.org/mailman/listinfo/python-list
Re: How to guard against bugs like this one?
kj wrote: ... Through a *lot* of trial an error I finally discovered that the root cause of the problem was the fact that, in the same directory as buggy.py, there is *another* innocuous little script, totally unrelated, whose name happens to be numbers.py. The right answer to this is to make module search return an error if two modules satisfy the search criteria. First find isn't a good solution. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Last M digits of expression A^N
Hello everyone. I am kind of new to python so pardon me if i sound stupid. I have to find out the last M digits of expression.One thing i can do is (A**N)%M but my A and N are too large (10^100) and M is less than 10^5. The other approach was repeated squaring and taking mod of expression. Is there any other way to do this in python more faster than log N. def power(A,N,M): ret=1 while(N): if(N%2!=0):ret=(ret*A)%M A=(A*A)%M N=N//2 return ret -- http://mail.python.org/mailman/listinfo/python-list
Re: xmlrcp - how to marshall objects
On Fri, 2010-02-05 at 18:24 +0100, Jean-Michel Pichavant wrote:
Jean-Michel Pichavant wrote:
Deos anyone knows where to find an code sample describing how to
implement the interface to marshall one object into XMLRPC compliant
structures ?
I googled without any success, and what google does not find does not
exist.
Let say I have this very simple class:
class Point:
def __init__(self, x, y):
self.x = x
self.y = y
I've looked into xmlrpc code, I see 2 options:
1/ override the Marshaller class of client and server
2/ looks like the lib is supporting a WRAPPER list system, it uses to
Marshall Datetime Binary object. Can it be possible to add its own
class (could require to emplement the 'encode' method)
I sense I will spend much more time than required unless someone is
pointing me in the right direction.
I realized I gave a poor example, actually the Point object is marshable
(marshallable ? like to invent new words), xmlrpc will try to marshall
using __dict__ if possible.
import os
class Point:
def __init__(self, x, y):
self.x = x
self.y = y
self.notMarshallable = os
This example doesn't make any sense. Why would you set a variable equal
to an important module in a class named Point?
What is it you are actually trying to accomplish? If you are trying to
create an object publishing environment then maybe something like -
rpc = xmlrpclib.loads(payload, use_datetime=True)
method = rpc[1].split('.')
classname = method[0]
methodname = method[1]
parameters = rpc[0]
classclass = eval(classname)
handler = classclass()
call = getattr(handler, method_name)
result = apply(call, parameters)
result = xmlrpclib.dumps(tuple([result]), methodresponse=True)
Obviously add copious amounts of exception handling and a security
model.
--
OpenGroupware developer: awill...@whitemice.org
http://whitemiceconsulting.blogspot.com/
OpenGroupare Cyrus IMAPd documenation @
http://docs.opengroupware.org/Members/whitemice/wmogag/file_view
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Re: How to guard against bugs like this one?
On Fri, Feb 5, 2010 at 12:16 PM, John Nagle na...@animats.com wrote: kj wrote: Through a *lot* of trial an error I finally discovered that the root cause of the problem was the fact that, in the same directory as buggy.py, there is *another* innocuous little script, totally unrelated, whose name happens to be numbers.py. The right answer to this is to make module search return an error if two modules satisfy the search criteria. First find isn't a good solution. And thereby slowdown every single import and application startup time as the common case of finding a module in one of the first couple entries in sys.path now has to search it in every single item on that path. Its not uncommon to have a LOT of things on sys.path. No thanks. First Find is good enough, especially with PEP328 and absolute_import being on in Python 3 (and presumably 2.7). It doesn't really help older Python versions unfortunately, but changing how import works wouldn't help them anyways. Yeah, there might be two paths on sys.path which both have a 'numbers.py' at the top level and First Find might return the wrong one, but... people making poor decisions on code organization and not using packages isn't something the language really needs to fix. --S -- http://mail.python.org/mailman/listinfo/python-list
Re: Last M digits of expression A^N
On Feb 5, 8:14 pm, mukesh tiwari mukeshtiwari.ii...@gmail.com wrote: Hello everyone. I am kind of new to python so pardon me if i sound stupid. I have to find out the last M digits of expression.One thing i can do is (A**N)%M but my A and N are too large (10^100) and M is less than 10^5. The other approach was repeated squaring and taking mod of expression. Is there any other way to do this in python more faster than log N. def power(A,N,M): ret=1 while(N): if(N%2!=0):ret=(ret*A)%M A=(A*A)%M N=N//2 return ret The built-in pow function does exactly this, if you give it three arguments: pow(12345, 67891, 17) 10 12345 ** 67891 % 17 10L (Though this won't work for negative N.) Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Last M digits of expression A^N
On Fri, Feb 5, 2010 at 3:14 PM, mukesh tiwari mukeshtiwari.ii...@gmail.com wrote: Hello everyone. I am kind of new to python so pardon me if i sound stupid. I have to find out the last M digits of expression.One thing i can do is (A**N)%M but my A and N are too large (10^100) and M is less than 10^5. The other approach was repeated squaring and taking mod of expression. Is there any other way to do this in python more faster than log N. def power(A,N,M): ret=1 while(N): if(N%2!=0):ret=(ret*A)%M A=(A*A)%M N=N//2 return ret -- http://mail.python.org/mailman/listinfo/python-list http://docs.python.org/3.1/library/decimal.html#decimal.Context.power -- Gerald Britton -- http://mail.python.org/mailman/listinfo/python-list
Re: method names nounVerb or verbNoun
On Fri, Feb 5, 2010 at 11:53 AM, Wanderer wande...@dialup4less.com wrote: Which is the more accepted way to compose method names nounVerb or verbNoun? For example voltageGet or getVoltage? getVoltage sounds more normal, but voltageGet is more like voltage.Get. I seem to mix them and I should probably pick one way and stick with it. Use properties[1] and just call it `voltage`. Python is not Java [2]; explicit getters/setters are unpythonic. [1] http://docs.python.org/library/functions.html#property [2] http://dirtsimple.org/2004/12/python-is-not-java.html Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: method names nounVerb or verbNoun
Wanderer wrote: Which is the more accepted way to compose method names nounVerb or verbNoun? For example voltageGet or getVoltage? getVoltage sounds more normal, but voltageGet is more like voltage.Get. I seem to mix them and I should probably pick one way and stick with it. I would use the 'normal' order, which in this case is 'get_voltage'. -- http://mail.python.org/mailman/listinfo/python-list
