Mailman 3 November 2002 - Twisted

[Twisted-Python] Hep, a Twisted project
by Abe Fettig 05 Nov '02

05 Nov '02

Hi all, I just released version 0.3 of Hep, my multiprotocol message server. The big change in this release is that Hep is now using Twisted for all its networking stuff: HTTP and XMLRPC clients, POP3, SMTP, and web servers. The Hep web page is: http://www.fettig.net/projects/hep. Thanks for the nice software! Abe

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[Twisted-Python] Version Of IM That Works With Tkinter?
by John Abel 05 Nov '02

05 Nov '02

Hi, I was looking to run IM on a Win32 machine, but both scripts, im.py and t-im.py, require GTK. According to the documentation that accompanies Twisted, IM should run with Tkinter. Does anyone have a copy that does? Thanks John

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[Twisted-Python] Question regarding widgets
by lals;dfjsd 05 Nov '02

05 Nov '02

Dear People, I am newbie with some background using zope. I am trying to use twisted in a web application that is going to be launched in my office. Problem now is that i cannot get the example to work ( Example ) ..... Specs : 1. os --> windows 98 2. python --> python-2.2.2 This is my autoexec.bat : @SET PYTHONPATH=C:\python22\lib\site-packages\twisted\ @SET PYTHONPATH=C:\web2\TWISTEDQUOTES\;C:\WEB2\MOHAN_KOTEH\ i can't seem to get the Example even to compile and looking through the docs doesn't seem to help much. One question can i use the --personal option on a windows machine ? I get an error that says it cannot find the pwd module. Can someone please help me or at least point me somewhere where there are some docs ??? Thanks in advance _____________________________________________________________________ iRepublics.com - Free Web Hosting for Businesses 33MB webspace free, SMS messaging, 30 email accounts, your own domain name Sign up Now at http://www.iRepublics.com

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[Twisted-Python] Some comments on twisted.news
by Paul Moore 04 Nov '02

04 Nov '02

I just set up a basic demo new server using twisted. Some initial comments: 1. It took me almost no time to put together a basic dummy NNTP server. Just create the backend, put a mktap driver in, and it's working. 2. There seems to be a problem with the server class. It translates \r\n.. to \r\n. in the data the backend supplies - this should be the other way round (it should be *doubling* the dots, so that they don't look like the end of data marker to the client). 3. It would be nice if the server handled the translation to CRLF, so that backends could return data with lines separated by \n, and the server class would convert that to \r\n. After all, \n is the "normal" end of line character internal to Python code, and \r\n is a feature of the NNTP protocol, so the protocol driver should be responsible for the conversion (IMHO). Of course, this is a behaviour change, which could break existing backends, so maybe it's not practical to make this change. 4. The implementation of STAT requests the article from the backend. This could be inefficient if getting the message ID is cheap, but getting the full article is expensive for a particular backend (it will be for me). In my partly-implemented NNTP server written in "raw" Python (before I found Twisted) I had a backend method getArticle(..., head=1, body=1) which was used to implement all of HEAD, BODY, ARTICLE and STAT, just by setting different values for the head and body parameters (so the backend could check for the case where neither was required, and act accordingly). (2) is obviously fairly trivial. I think I could implement (3) and (4), if it would be useful. I could submit a patch, which would alter the server code and the 2 existing backends (I couldn't test the database backend, as I don't have a database to test with, but I could test the pickle-based code). Would this be helpful? Are there likely to be 3rd party nntp backends which would be broken by such a change? Paul. -- This signature intentionally left blank

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[Twisted-Python] Reflector init patch (repost)
by Jonathan Lange 04 Nov '02

04 Nov '02

On Thu, Oct 31, 2002 at 11:33:01AM +1100, Jonathan M. Lange wrote: With reference to twisted.enterprise.reflector not making a Deferred available on construction, despite it being an asynchronous operation... > Suggestions include having a populatedDeferred as a member (rather than > populatedCallback) I've been having troubles with my mail recently. In case this did not come through, here is the patch again. Comments appreciated. Commits even more so. Index: twisted/enterprise/reflector.py =================================================================== RCS file: /cvs/Twisted/twisted/enterprise/reflector.py,v retrieving revision 1.9 diff -u -r1.9 reflector.py --- twisted/enterprise/reflector.py 16 Oct 2002 04:27:29 -0000 1.9 +++ twisted/enterprise/reflector.py 31 Oct 2002 00:57:59 -0000 @@ -20,6 +20,7 @@ from twisted.enterprise import adbapi from twisted.enterprise.util import DBError, getKeyColumn, quote, _TableInfo, _TableRelationship from twisted.enterprise.row import RowObject +from twisted.internet import defer class Reflector: """Base class for enterprise reflectors. This implements rowCacheing. @@ -61,6 +62,7 @@ from twisted.internet import reactor reactor.callLater(0, self._really_populate) + self.populatedDeferred = defer.Deferred() def _really_populate(self): """Implement me to populate schema information for the reflector. Index: twisted/enterprise/sqlreflector.py =================================================================== RCS file: /cvs/Twisted/twisted/enterprise/sqlreflector.py,v retrieving revision 1.10 diff -u -r1.10 sqlreflector.py --- twisted/enterprise/sqlreflector.py 14 Oct 2002 22:34:21 -0000 1.10 +++ twisted/enterprise/sqlreflector.py 31 Oct 2002 00:58:00 -0000 @@ -49,6 +49,7 @@ defe = self.runInteraction(self._transPopulateSchema) if self.populatedCallback: defe.addCallbacks(self.populatedCallback) + defe.chainDeferred(self.populatedDeferred) def _transPopulateSchema(self, transaction): """Used to construct the row classes in a single interaction.

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[Twisted-Python] twisted.enterprise.row Where clauses (and maybe other conditions.)
by Thomas Raschbacher 04 Nov '02

04 Nov '02

hi! just wondered if it would be acceptable to add either grouping and e.g. OR to whereClause or to make it possible to specify the WHERE CLAUSE manually(which could be abused for other things too .. i know..) another thing is an 'ORDER BY' Clause .. both should be easy to add afaik .. (code for where-clause starting at line 129 of sqlreflector.py) what do u think? opinions, suggestions? greetings, LordVan -- -----BEGIN GEEK CODE BLOCK----- GCS/CC/E/M/MU/S d- s: a--- C++++(++) UL++++ P+ L++++ E W+++ N+++ o-- K w-- O M-- V- PS+ PE-- Y++ PGP+++ t+++ 5+ X- R tv b++++ DI- D+ G++ e-->+++++ h-- !r z- ------END GEEK CODE BLOCK------ ----------------------------------------- This email was sent using SquirrelMail. "Webmail for nuts!" http://squirrelmail.org/

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[Twisted-Python] Problem getting one woven.Widget to include another
by Alex 04 Nov '02

04 Nov '02

I'm setting up a site using Woven, and I've hit a strange problem. I've got a subclass of woven.widget.Widget called VolumeWidget, and that widget is used to display a list of links within a page. I've got another class called VolumeListWidget, the only purpose of which is to display a list of these VolumeWidgets. class VolumeListWidget(widgets.Widget): def setUp(self, request, node, data): for volume in data.get('volumes') or []: volume_model = VolumeModel(volume) volume_div = VolumeWidget(volume_model) volume_div.tagName = 'div' self.add(volume_div) VolumeListWidget's not working. Instead of displaying a <div> that contains all the stuff VolumeWidget is supposed to contain [as defined in VolumeWidget's setUp() function], it's displaying an empty <div/>. I'm not sure what I'm doing wrong, if anything, but it's too strange to tell. Example (along with some code) is available here: http://polynode.com:8889/content.rpy/testvolumelist To see a working example of VolumeWidget, go here: http://polynode.com:8889/content.rpy/testvolume I will appreciate any help anyone can lend me.

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[Twisted-Python] Another IRC patch.
by screwtape＠froup.com 03 Nov '02

03 Nov '02

While developing my twisted.im bot (new this week! database access and an infobot-style plugin!) I've come up against two seperate annoyances. This patch fixes both of them. Number 1: the IRC protocol defines (among other things) two message types - privmsg and notice. They are identical in every respect except that a notice must not be automatically replied to. Currently, twisted.protocol.irc.IRCClient maps notice onto privmsg, which is dangerous but acceptible, because you're supposed to subclass IRCClient anyway. However, twisted.im.ircsupport subclasses IRCClient and does not override the 'noticed' method, so all twisted.im clients cannot tell the difference between a privmsg and a notice. This is really not a good thing, especially for an IM bot like mine. The attached patch fixes this in a brute force manner by making twisted.im.ircsupport drop all notices on the floor. Number 2: The IRC protocol defines a certain bunch of commands that the server can send the client. twisted.protocol.irc.IRCClient calls self.irc_COMMAND to handle an incoming command 'COMMAND', and if no such method exists, it calles self.irc_unknown. twisted.im.ircsupport by default prints an error message for each unknown command it recieves. Slashnet in particular seems to like to send a lot of them, and it clutters up my screen. This patch simply comments out the print statement and adds a 'pass'. -- ___________ ____________________________ | Screwtape | Reply-To: munged on Usenet |________ ______ ____ __ _ _ _ | | "I've got this brilliant idea but I don't know where it is." -- Beth Allen |

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[Twisted-Python] New release of the twisted IM bot
by screwtape＠froup.com 03 Nov '02

03 Nov '02

Yes, another raw tarball of my code. New in this update: - infobot plugin with an SQL backend - currently uses sqlite and pysqlite (see http://pysqlite.sf.net), but porting it to some other SQL database should be trivial. - A README file. - Properly ignores NOTICEs and ACTIONs (requires Twisted from current CVS to ignore NOTICEs. Location: http://members.optusnet.com.au/thristian/twisted-bot-0.1.tar.gz Currently, the bot is lurking in #afda on irc.slashnet.org under the name of 'Mooby', if you want to poke at it. Screwtape, ...still waiting for his first bug report. -- ___________ ____________________________ | Screwtape | Reply-To: munged on Usenet |________ ______ ____ __ _ _ _ | | "You seem cool for a naked chick in a booth - let's be pals someday." -- PUSA |

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Re: [Twisted-Python] SMTP
by Anders Hammarquist 03 Nov '02

03 Nov '02

In a message of Sat, 02 Nov 2002 19:27:40 EST, Itamar Shtull-Trauring writes: >On Sat, 02 Nov 2002 18:35:44 +0100 >Anders Hammarquist <iko(a)cd.chalmers.se> wrote: > >> $ python2.2 pyunit/unittest.py >> twisted.test.test_smtp.AnotherSMTPTestCase.testBuffer---- Running >> Test: twisted.test.test_smtp.AnotherSMTPTestCase.testBuffer >Please note that Twisted needs to support 2.1 as well, it's recommended >you run tests under both 2.1 and 2.2. Though that may be totally >unrelated to the issue here. There shouldn't be any 2.2-specific stuff in there, using 2.2 is just habbit (as the stuff we're using it for needs 2.2). Running the same test using python 2.1 works, so there shouldn't be any major 2.1 incompatibilities ;-) /Anders -- -- Of course I'm crazy, but that doesn't mean I'm wrong. Anders Hammarquist | iko(a)cd.chalmers.se Physics student, Chalmers University of Technology, | Hem: +46 31 88 48 50 G|teborg, Sweden. RADIO: SM6XMM and N2JGL | Mob: +46 707 27 86 87

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