Mailman 3 January 2011 - Twisted

[Twisted-Python] Twisted Python 0.7.0 Prerelease Testing
by Glyph Lefkowitz 05 Aug '21

05 Aug '21

hi there, folks: I'd really like to release 0.7.0 but I would like it to be at least a little bit tested before I do so. Could those of you with CVS trees check everything out and see if it performs as advertised? Deeper bugs than that will have to wait for the next release, but I'd at least like to know if it works for someone other than me. Thanks. ______ __ __ _____ _ _ | ____ | \_/ |_____] |_____| |_____| |_____ | | | | @ t w i s t e d m a t r i x . c o m http://www.twistedmatrix.com/~glyph/

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01 May '19

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[Twisted-Python] regarding xml elements
by Raj kumar 02 Oct '13

02 Oct '13

Hi, I have an xml file in my application, I have created an element using Example goes like this......... document.createElement("abc") and i appeneded it by using append() method. But how i can reflect this change to my xml file? and one more thing is i want to create element with some other parameters.... like............. <abc m=" " n=" "> </abc> and i have m and n values as strings with me. can anybody help me to create this element and write it to the existing xml file as a child of an existing element? Thanks in advance.. Raj.. Forgot the famous last words? Access your message archive online at http://in.messenger.yahoo.com/webmessengerpromo.php

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[Twisted-Python] Get IP of connecting client in XMLRPC server
by Remy C. Cool 28 Apr '13

28 Apr '13

Hello, On 18 May 2004, the following message was posted to this mailinglist: Jp Calderone exarkun at divmod.com wrote: >Daniel Newton wrote: > > I have a simple XML-PRC server similar to the example below: > > from twisted.web import xmlrpc, server > > class Example(xmlrpc.XMLRPC): > """An example object to be published.""" > > def xmlrpc_add(self, a, b): > """Return sum of arguments.""" > return a + b def xmlrpc_whatIsMyAddress(self): return self.transport.getPeer().host > > if __name__ == '__main__': > from twisted.internet import reactor > r = Example() > reactor.listenTCP(7080, server.Site(r)) > reactor.run() > > I want to be able to get the address of the client that calls the xmlrpc > method can anyone help me with this? This solution didn't work because 'transport' isn't a property of the Example class. I'm currently in the process of changing from a customized SimpleXMLRPCServer to a twisted XMLRPC server solution and I need to insert the client IP into the attributes passed to the called xmlrpc method. Anyone who knows the answer and is willing to share the info? Regards, Remy

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[Twisted-Python] http.Request and JSON
by Vincent Gulinao 25 Jan '12

25 Jan '12

How do you read JSON content from a POST using http.Request. I peeked on args and it's empty. TIA.

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[Twisted-Python] Task-based documentation started
by Tom Davis 06 Feb '11

06 Feb '11

I have the beginnings of some task-based documentation available in twisted-docs (https://github.com/tdavis/twisted-docs) now. You can find the built version in the usual place (http://docs.recursivedream.com/twisted/) -- just remember to bust the cache. I chose serving web content as a starting point because it seems as common a task as any. I took some examples from the existing howto ( http://twistedmatrix.com/documents/current/web/howto/using-twistedweb.html), as well as added some examples of further learning and glossary entries to make the point. Obviously there's nothing completely usable here yet; it's primarily an exercise in showing how I'd like to split up sprawling, semi-random docs like *using-twistedweb* into more coherent, digestible, stackable pieces. A document to talk about core concepts (Site Objects, Resources, etc.), sections for supplementary features like Sessions, Virtual Hosts, etc. Another advantage of this style is that we can effortlessly stitch together our own tutorials (were that ever a goal) just by linking in step-wise fashion to ever-advanced tutorials which themselves wrap back around to core concepts like, in this case, Applications and the IService stack. It should be up to the user how deep into the rabbit hole they want to go; right now I have to slog through two sections to get to a part that tells me how to just serve a directory of HTML. Thoughts?

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[Twisted-Python] Using SerialPort with t.a.s.Application
by Albert Brandl 04 Feb '11

04 Feb '11

Hi! In our project, we accumulate data from various sources. Some of them are connected via serial line (e.g. a GPS receiver and a weather station). I'd like to run the application with twistd. But it looks as if SerialPort does not really fit into this framework. It does not implement IService, so `my_serial_port.setServiceParent(collection)` does not work. Is there any technical reason that SerialPort does not implement IService? Could you suggest a workaround for this problem (other than dumping t.a.s.Application ;-))? Best regards, Albert -- Albert Brandl Weiermayer Solutions GmbH | Abteistraße 12, A-4813 Altmünster phone: +43 (0) 720 70 30 14 | fax: +43 (0) 7612 20 3 56 web: http://www.weiermayer.com

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[Twisted-Python] Fingering Finger
by Tom Davis 01 Feb '11

01 Feb '11

In this thread, I hope to find a resolution to the issue of the Finger tutorial and efforts to sufficiently improve it or remove it. In the course of reviewing documentation-related tickets, I stumbled upon #1148 (http://twistedmatrix.com/trac/ticket/1148). Therein, Glyph first(?) put down a lot of things we've been discussing and agreeing upon in the Refactoring Documentation thread. One of the issues still up for debate is whether or not the Finger tutorial is sufficiently strong to survive the documentation overhaul. There are various points against it right now: - It isn't tested or even test*able* - It doesn't cover "best practices" as they relate to writing testable, maintainable code, etc. - It attempts to implement basically every main Twisted concept, often in contrived or poorly-executed ways - It has been said it has, "...at best, the potential for mediocrity." There are also enough tickets related to refactoring / rewriting it that a resolution would make a significant dent in the list of stale documentation tickets. Among these two year-old tickets are: - http://twistedmatrix.com/trac/ticket/532 - Big jump from finger18.py to finger19.py in tutorial - http://twistedmatrix.com/trac/ticket/626 - Split tutorial finger code into libraries - http://twistedmatrix.com/trac/ticket/2205 - Documentation codelistings need updating and tests This shouldn't be a blocker on anything Kevin and I are doing, but it'd be nice to concurrently have discussions on issues we'll need to address later. I'm also pretty anal about ticket lists and if these aren't going anywhere I'd love to close them ;) Cheers, Tom

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[Twisted-Python] A Python enum library with a Twist
by Jonathan Jacobs 01 Feb '11

01 Feb '11

Hi, First off there isn't actually a twist, it's just for Twisted addressing the points in #4671 [1]. Sorry to disappoint. Secondly I realise there are already at least a thousand Python enum libraries, most of which I haven't explored, feel free to mention these with supporting arguments. My point of view is that a great many number of these enum libraries go to long lengths to make stuff too "cute". While having less not-networking-related code in Twisted may be a more desirable route, Twisted makes enough use of enum-esque things in the current code base that it may be easier (maybe even warranted) to have our own implementation that can cater directly to the needs of Twisted without being subjected to the usual irritations of third-party software; also Twisted's high-qualilty coding and testing standards are only a good thing. The current code is hosted on Launchpad [2] and the source code is viewable on the web [3]. I am aware that there are currently no unittests or any kind of useful documentation, hopefully the examples are good enough for now. I'm hoping for some feedback to decide whether to press ahead or turn back. I've tried to look at as many Twisted enum use-cases as possible, without trying to cater to every one individually, however I do still have a few questions: 1. #4671 uses an "asInt" method in the examples, this is obviously going to require changing all code that uses these enums (of which there is plenty.) Is this a good idea? It seems easy to forget that "F_FOO | F_BAR" is not giving you a number. 2. I use "__int__", I don't know if this is horrible or not and whether I should just use the "asInt" method proposed in the ticket. 3. It seems to me that there are two general cases: 1. The enum just holds values that have an interesting meaning on their own (e.g. AMP special keys (ASK, ANSWER, etc.), IRC status codes (RPL_WHOIS, etc.)) and combining them makes no sense. 2. The enum holds values that are intended to be combined. i.e. flags. Does it make sense to try and combine this behaviour into the same type? Currently it is and you get an exception when doing certain things (none of which make any sense, in this context): >>> (Words.AYE | Words.BEE) <EnumValueGroup '|': [<EnumValue Words.AYE: 'a'>, <EnumValue Words.BEE: 'b'>]> >>> (Words.AYE | Words.BEE).value Traceback (most recent call last): File "<stdin>", line 1, in <module> File "enum.py", line 77, in value return reduce(self.op, values) TypeError: unsupported operand type(s) for |: 'str' and 'str' >>> Words.fromValue('a') <EnumValue Words.AYE: 'a'> >>> Words.fromValue('c') # This value is not in the enumeration and ORing values to get it is impossible. Traceback (most recent call last): File "<stdin>", line 1, in <module> File "enum.py", line 133, in fromValue if target - v < 0: TypeError: unsupported operand type(s) for -: 'str' and 'str' Comments appreciated. [1] <http://twistedmatrix.com/trac/ticket/4671> [2] <http://code.launchpad.net/~jjacobs/+junk/twistedenum> [3] <http://bazaar.launchpad.net/~jjacobs/+junk/twistedenum/view/head:/enum.py> -- Jonathan

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[Twisted-Python] Weekly Bug Summary
by exarkun＠twistedmatrix.com 30 Jan '11

30 Jan '11

1 0