Mailman 3 June 2008 - Twisted

[Twisted-Python] Sane way to get the exit code from reactor.spawnProcess(SomeProtocol, ...)
by Nathan 26 Jun '08

26 Jun '08

Is there a more sane way to get the exit code from a ProcessProtocol than by parsing it out of reason.value in ProcessProtocol.processEnded()? I can't seem to find the error code by itself anywhere. (see example code at bottom) If I replace "print reason.value" with "print dir(reason)" below, then I get the following output for both successful and unsuccessful spawns: ['__doc__', '__getstate__', '__init__', '__module__', '__repr__', '__str__', '_findFailure', '_yieldOpcode', 'check', 'cleanFailure', 'count', 'frames', 'getBriefTraceback', 'getErrorMessage', 'getTraceback', 'getTracebackObject', 'parents', 'pickled', 'printBriefTraceback', 'printDetailedTraceback', 'printTraceback', 'raiseException', 'stack', 'tb', 'throwExceptionIntoGenerator', 'trap', 'type', 'value'] Most of the *Traceback functions include the "value" line inside them. getErrorMessage() apparently returns "value" itself. "value" looks like: "A process has ended without apparent errors: process finished with exit code 0." or "A process has ended with a probable error condition: process ended with exit code 1." ...but the actual exit code doesn't seep to appear (by itself) anywhere! ~ Nathan from twisted.internet import reactor from twisted.internet.protocol import ProcessProtocol class TestProtocol(ProcessProtocol): def processEnded(self, reason): print reason.value def good(): good_binary = "/bin/ls" good_args = ("/bin/ls", '/') good_process = reactor.spawnProcess(TestProtocol(), good_binary, args=good_args) def bad(): bad_binary = "/bad" bad_args = ("/bad", '/') bad_process = reactor.spawnProcess(TestProtocol(), bad_binary, args=bad_args) reactor.callWhenRunning(good) reactor.callLater(1.0, bad) reactor.callLater(2.0, reactor.stop) reactor.run()

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[Twisted-Python] IPv6 support in Python Twisted
by Cedric Delfosse 25 Jun '08

25 Jun '08

Hello, I'm wondering what is the current status of IPv6 support in the Twisted framework. I only found this ipv6.py file there: http://twistedmatrix.com/trac/browser/sandbox/exarkun/ipv6.py Is IPv6 support scheduled in Twisted roadmap ? Best regards, -- Cedric Delfosse Mandriva / Linbox 152, rue de Grigy - Technopole Metz 57070 METZ - FRANCE tel: +33 (0)3 87 50 87 90 http://mandriva.com

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[Twisted-Python] How to set client timeout with reactor.listenTCP?
by uupandemo 23 Jun '08

23 Jun '08

When a client to the server socket, server can't close the connection while the idle time exceed the timeout. How to solve it?

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Re: [Twisted-Python] Urgently Seeking.......
by anurag uniyal 23 Jun '08

23 Jun '08

I am extremely sorry, please ignore this email. rgds Anurag ----- Original Message ---- From: anurag uniyal <anuraguniyal(a)yahoo.com> To: Twisted general discussion <twisted-python(a)twistedmatrix.com> Sent: Monday, 23 June, 2008 6:21:37 PM Subject: Re: [Twisted-Python] Urgently Seeking....... Hi, I have about 8 years of exp.in python and have exp. with both twisted and django and I am currently located in India. I would like to know more about this oppurtunity e.g what type of project it is, how technically involved. and is tellecommuting is an option here? thanks and regards Anurag ----- Original Message ---- From: Sean Burling <Sean.Burling(a)v-hr.com> To: twisted-python(a)twistedmatrix.com Sent: Monday, 23 June, 2008 4:23:59 PM Subject: [Twisted-Python] Urgently Seeking....... Hi people, My name is Sean Burling and I am an account manager for V-hr, an IT recruitment company based in London. I am currently seeking a Senior Python Developer/ Team Lead (ideally with exposure to either Django or Twisted) for a multimedia company based in the heart of Amsterdam. I am struggling to find candidates with the relevant experience and as such wanted to reach out to the list to find out if any of you or your contacts are interested in new opportunities in Europe. I apologise if this has reached you in error, however to find out more about this opportunity please contact me on +44 (0)207 500 7992. Kind Regards Sean Burling Account Manager ________________________________ From Chandigarh to Chennai - find friends all over India. Click here. Best Jokes, Best Friends, Best Food and more. Go to http://in.promos.yahoo.com/groups/bestofyahoo/

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Re: [Twisted-Python] Urgently Seeking.......
by anurag uniyal 23 Jun '08

23 Jun '08

Hi, I have about 8 years of exp.in python and have exp. with both twisted and django and I am currently located in India. I would like to know more about this oppurtunity e.g what type of project it is, how technically involved. and is tellecommuting is an option here? thanks and regards Anurag ----- Original Message ---- From: Sean Burling <Sean.Burling(a)v-hr.com> To: twisted-python(a)twistedmatrix.com Sent: Monday, 23 June, 2008 4:23:59 PM Subject: [Twisted-Python] Urgently Seeking....... Hi people, My name is Sean Burling and I am an account manager for V-hr, an IT recruitment company based in London. I am currently seeking a Senior Python Developer/ Team Lead (ideally with exposure to either Django or Twisted) for a multimedia company based in the heart of Amsterdam. I am struggling to find candidates with the relevant experience and as such wanted to reach out to the list to find out if any of you or your contacts are interested in new opportunities in Europe. I apologise if this has reached you in error, however to find out more about this opportunity please contact me on +44 (0)207 500 7992. Kind Regards Sean Burling Account Manager Explore your hobbies and interests. Go to http://in.promos.yahoo.com/groups/

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[Twisted-Python] Urgently Seeking.......
by Sean Burling 23 Jun '08

23 Jun '08

Hi people, My name is Sean Burling and I am an account manager for V-hr, an IT recruitment company based in London. I am currently seeking a Senior Python Developer/ Team Lead (ideally with exposure to either Django or Twisted) for a multimedia company based in the heart of Amsterdam. I am struggling to find candidates with the relevant experience and as such wanted to reach out to the list to find out if any of you or your contacts are interested in new opportunities in Europe. I apologise if this has reached you in error, however to find out more about this opportunity please contact me on +44 (0)207 500 7992. Kind Regards Sean Burling Account Manager

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 22 Jun '08

22 Jun '08

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[Twisted-Python] reject all open connections
by Irae Hueck Costa 22 Jun '08

22 Jun '08

hi all! i just want to clean my reactor - all readers and writer should looseConnection() but how can i do this? reactor.removeAll() dont do it. the best solutions i found was a horrible workaround: a thread is tarted, which constantly calls ``[conn.loseConnection() for conn in reactor.removeAll()]`` is there a better solution? thank you _________________________________________________________________ Conheça o Windows Live Spaces, a rede de relacionamentos do Messenger! http://www.amigosdomessenger.com.br/

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Re: [Twisted-Python] Twisted Trial
by Jake b 21 Jun '08

21 Jun '08

On Wed, Jun 18, 2008 at 3:48 AM, Torsten A. <c2k_list(a)gmx.de> wrote: > Thank you all for your replies. > > @Christian: > I should have mentioned that. The current directory is in the pythonpath. > In > the variable PYHTONPATH the dot is set and when I walk through the > filesystem, starting python from different locations, the current path is > always set in sys.path. Hence, I asssume that PythonPath is set correctly. > So your suggestion, what I thought would work > > cd \original_project > > trial package_to_test > > > > cd \modified_project > > trial package_to_test > does actually not work. Who knows why... I'm guessing this is abnormal behavior that's on WinXP only? I on winXP have tried setting multiple environment variables to include a project path, but imports did not work. The only way I could add a path to python's import paths on winXP was to edit the registry. If PYTHONPATH being set in windowsXP doesn't seem to have any effect (Like it doesn't seem to work for me ) the only fix I found was a registry edit. At the path: HKLM\SOFTWARE\Python\PythonCore\2.5\PythonPath create a new key, ie: 'project1', create a new value, name=(Default), value='c:\data\path\to\project' > I have never really used a version control system I have to admit. I > thought > of control systems to log changes which can in case of severe damage or > what > ever reason be made undone. But if I can execute different versions of the > project, e.g. in my case the initial version and the last modified, just by > saying run this one or that one, I am glad to use it. Can this be done > (excuse my probably dumb question)? Can someone please give me catchword to > search for? As I looked briefly in the bazaar guide > (http://doc.bazaar-vcs.org/bzr.dev/en/user-guide/index.html) I wasn't able > to find anything helpful. ( I don't know much about version control, it's something I'm looking into. ) A term to search, maybe you're looking for is 'clone' or 'branch'. If you meant to search for differnt code versioning programs, here's some: Mercurial ( http://www.selenic.com/mercurial/wiki/ ), Subversion ( http://subversion.tigris.org/ ), TortoiseSVN ( http://tortoisesvn.net/ ) Hope that helps :P -- Jake

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[Twisted-Python] Twisted, twistd and logging
by Tim Allen 20 Jun '08

20 Jun '08

Hi, all. I'm working on a new system to be deployed in our production environment, and having already decided on using Twisted, I'm now trying to figure out how to cleanly and reliably deploy it. I have many questions, but right now I just want to work through the issue of logging. In our existing systems, our code writes messages to syslog, with 'facility' set to LOG_LOCAL0 and 'priority' set according to the severity of the event - debug, info, warn or alert. Anything logged with 'alert' severity causes our monitoring to contact the operator on duty, so they can look into it. For the sake of our operators and system administrators, I'd prefer to use as much of the existing monitoring infrastructure as possible. On the other hand, the logging code we use at the moment is crufty old home-grown code, and I'd much prefer to use a logging system maintained by somebody else. My first thought was to use the 'logging' module in the Python 2.3 standard library. It covers all the syslog functionality I want (and more), and it's pretty easy to use. Unfortunately, using Python's logging module with Twisted is hard for two reasons: twistd and trial. Both go to great lengths to Do The Right Thing with logging, and both totally ignore the Python logging mechanism. My second thought was to use twisted.python.log, but that brings its own set of problems: 1. twisted.python.syslog isn't very... complete. For starters, it doesn't let you specify the syslog facility, and even if it did, twistd would need to be extended to support it. 2. As has been discussed in the list archives, t.p.log doesn't support log-levels. While I can see glyph's point about the arbitraryness of fixed log-levels, I really do want to distinguish between "forensic record of ordinary operation" and "Danger, Will Robinson!" I think the best way of solving my problems would be to: a) update t.p.syslog so that it supports a 'facility' parameter. b) update t.p.syslog so that log-messages with 'isError' true are logged with the LOG_ALERT priority rather than the default. c) update the Unix version of twistd to support a 'syslogFacility' command-line parameter. Would such a patch be accepted? If necessary, I could replace (b) with a syslog-based LogObserver in my own code, but I'm keen to have (a) and (c) in the Twisted code-base.

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